Darc.md

Darc

Darc is a tool for managing and querying the relationships between repositories in the .NET Core ecosystem. This document describes various scenarios and how to use darc to achieve them, as well as a general reference guide to darc commands.

Index

• Scenarios

  • Setting up your darc client
  • Adding dependencies to a repository
  • Updating dependencies in your local repository
  • Removing dependencies from a repository
  • Changing a dependency's type
  • 'Pinning' dependencies so they do not update
  • Coherent parent dependencies
  • Adding dependency flow
  • Halting and restarting dependency flow
  • Viewing the dependency graph
  • Gathering a build drop
  • Assigning an individual build to a channel
  • Locating the BAR build ID for a build
  • Checking Merge Policies on Github

• Command Reference

  • Common Parameters
  • add-channel - Creates a new channel.
  • add-dependency - Add a new dependency to Version.Details.xml.
  • add-default-channel - Add a channel that a build of a branch+repository is automatically applied to.
  • add-subscription - Add a new subscription.
  • add-build-to-channel - Adds an existing build to a channel
  • authenticate - Stores the Azure DevOps and GitHub tokens required for remote operations.
  • clone - Clone a remote repo and all of its dependency repos.
  • default-channel-status - Enables or disables a default channel association.
  • delete-channel - Deletes an existing channel.
  • delete-default-channel - Remove a default channel association.
  • delete-subscriptions - Remove a subscription.
  • gather-drop - Gather a drop of the outputs for a build.
  • get-asset - Get information about an asset.
  • get-build - Retrieves a specific build of a repository,
  • get-channels - Get a list of channels.
  • get-default-channels - Gets a list of repo+branch combinations and their associated default channels for builds.
  • get-dependencies - Get local dependencies.
  • get-dependency-graph - Build repository dependency graph.
  • get-flow-graph - Get dependency flow graph.
  • get-health - Evaluate health.
  • get-latest-build - Retrieves the latest builds matching the specified criteria. If more than one build matches then multiple builds are returned.
  • get-repository-policies - Retrieves information about repository merge policies.
  • get-subscriptions - Get information about subscriptions.
  • set-repository-policies - Set merge policies for the specific repository and branch.
  • subscription-status - Enables or disables a subscription matching the id.
  • trigger-subscriptions - Trigger a subscription or set of subscriptions matching criteria.
  • update-dependencies - Update local dependencies from a channel.
  • update-subscription - Update an existing subscription.
  • verify - Verify that the dependency information in the repository is correct.
  • set-goal - Sets goal for a Definition in a Channel.
  • get-goal - Gets the goal for a Definition in a Channel.

Scenarios

Setting up your darc client

The darc client is a .NET Core global tool. It requires that a .NET Core SDK be installed globally on the machine. The client can be installed using the eng\common\darc-init.ps1 script located under any arcade enabled repository. The version of the tool that will be installed will match the version of the Maestro++ service at the time of the installation.

Step 1: Ensure you're part of the dotnetes-maestro-users CoreIdentity group:

Go to https://coreidentity.microsoft.com/manage/Entitlement/entitlement/dotnetesmaes-z54r and request to join.

Step 2: Install the darc client (from scripts in any arcadified repository):

D:\repos\arcade> .\eng\common\darc-init.ps1
  Attempting to install 'sdk v9.0.100-preview.4.24267.66' from public location.
dotnet-install: Extracting the archive.
dotnet-install: Adding to current process PATH: "D:\repos\arcade\.dotnet\". Note: This change will not be visible if PowerShell was run as a child process.
dotnet-install: Note that the script does not resolve dependencies during installation.
dotnet-install: To check the list of dependencies, go to https://learn.microsoft.com/dotnet/core/install/windows#dependencies
dotnet-install: Installed version is 9.0.100-preview.4.24267.66
dotnet-install: Installation finished
Tool 'microsoft.dotnet.darc' (version '1.1.0-beta.24304.4') was successfully uninstalled.
Installing Darc CLI version 1.1.0-beta.24306.2...
You may need to restart your command window if this is the first dotnet tool you have installed.
'D:\repos\arcade\.dotnet\dotnet.exe' tool install microsoft.dotnet.darc --version 1.1.0-beta.24306.2 --add-source 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json' -v minimal -g
You can invoke the tool using the following command: darc
Tool 'microsoft.dotnet.darc' (version '1.1.0-beta.24306.2') was successfully installed.

If you get a SecurityError saying that \eng\common\darc-init.ps1 cannot be loaded because running scripts is disabled on this system, you can relax your ExecutionPolicy for this script:

powershell -ExecutionPolicy ByPass -File .\darc-init.ps1

After your client is installed, you should be able to launch it by typing 'darc' on the command line. If this is the first global tool you've installed, you may need to first restart your command window.

D:\repos\arcade> darc
Microsoft.DotNet 1.1.0-beta.19081.1+270fa76db13d4c103a6dec2b03f1fd79730ff429
c Microsoft Corporation. All rights reserved.
ERROR(S):
No verb selected.

  add-channel                  Creates a new channel.

  add-dependency               Add a new dependency to Version.Details.xml.

  add-default-channel          Add a channel that a build of a branch+repository is automatically applied to.

  add-subscription             Add a new subscription.

  authenticate                 Stores the VSTS and GitHub tokens required for remote operations.

  delete-channel               Deletes an existing channel.

  delete-default-channel       Remove a default channel association.

...

Step 3: Set additional PATs for Azure DevOps and GitHub operations

When executing most operations, the client needs to make some remote queries. These remote queries require authentication in most circumstances. There are 3 PATs that may be used:

• [Required] A GitHub PAT for downloading files from GitHub (e.g. eng/Version.Details.xml or arcade script files. No scopes required but token must be SSO enabled for all organizations for which repositories darc will be used.
• [Optional] An Azure DevOps PAT for downloading files from Azure DevOps. (e.g. eng/Version.Details.xml). When not provided, local system credentials are used. Required scopes: Code-Read, Build-Read & Execute, Packaging Read. The recommended way of generating the PAT is using the PatGeneratorTool, with the dotnet pat-generator --scopes build_execute code --organizations dnceng devdiv --expires-in 180 command
• [DEPRECATED] A Build Asset Registry (BAR) password for interacting with Maestro++/BAR (e.g. obtaining build information needed for a drop). This one is no longer needed and you can sign-in through browser when using darc.

Note

PatGeneratorTool can be installed with the following command

dotnet tool install --global Microsoft.DncEng.PatGeneratorTool --add-source https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json --prerelease

These tokens can either be passed on the command line using parameters (see Common parameters), or cached locally on the machine using the darc authenticate command.

After supplying your secrets, a simple darc get-channels operations should succeed.

D:\repos\arcade> darc get-channels
.NET Tools - Latest
.NET Engineering Services - Int
.NET Engineering Services - Prod
.NET Tools - Validation
.NET Core 3 Release
.NET Core 3.1 Dev
.NET Core 3.1 Release
.NET 5 Dev
.NET Core 3.0 Internal Servicing
.NET 3 Tools
.NET 3 Tools - Validation

Adding dependencies to a repository

Adding a new dependency to a repository means adding a dependency that is tracked by the Maestro++/darc system. This dependency's version can then be automatically updated, along with its sha and repository uri. It can contribute to the repository dependency graph, and the build producing it will be included in a drop.

Dependencies are tracked in eng/Version.Details.xml, along with the following information about each one:

• Name
• Source sha
• Source repository
• Is the dependency version pinned (can be it automatically updated?)
• Dependency type (toolset or product)

The darc add-dependency command adds a new dependency. It takes a number of parameters, though only --name and --type are initially required. It is highly recommended at least the --repo parameter be provided so that the sha/version data can be filled in using darc update-dependencies. See Toolset vs. Product Dependencies below for information on type. For example:

darc add-dependency --name 'Microsoft.NETCore.App' --type 'product' --repo https://github.com/dotnet/core-setup

This will add a new dependency called 'Microsoft.NETCore.App' to eng/Version.Details.xml under the product section. The version, repo, and sha information will be left blank. A corresponding PropertyGroup entry in eng/Versions.props will be added, with the same version number. The property name is derived off of the dependency name, with the .'s and -'s removed and "PackageVersion" added onto the end. Note: If eng/Versions.props's existing version property names end with the suffix 'Version', darc will append that instead.

eng/Versions.props after add command.

<MicrosoftNETCoreAppPackageVersion></MicrosoftNETCoreAppPackageVersion>

After doing this, you can use the generated MicrosoftNETCoreAppPackageVersion property as inputs to a PackageReference element or wherever else may need a version number.

After adding, it is recommended that you use darc to fill out the missing dependency information. The information can also be filled in after committing by Maestro++ using dependency flow, but passing your CI without a filled-in version number may be difficult. See Updating dependencies in your local repository

Toolset vs. Product Dependencies

There are two types of dependencies: 'Product' and 'Toolset'. Choosing between them involves answering the question:

"Does my repository repackage the input dependency's binaries, or information about those binaries in the outputs it creates for the product?" If so, that dependency is 'Product', otherwise, it's 'Toolset'.

Some examples:

Toolset

• Arcade SDK or other arcade packages - These packages are not customer facing and do not ship as part of the product.
• dotnet/corefx's dependency on Microsoft.NETCore.App - This is a circular dependency for testing purposes.

Product

• dotnet/core-setup's dependency on dotnet/coreclr's runtime packages - Even though these packages are not 'shipped' to nuget.org, they are repackaged by dotnet/core-setup.
• dotnet/core-sdk's dependency on dotnet/core-setup - The SDK repackages information about Microsoft.NETCore.App.
• dotnet/winforms's dependency on dotnet/corefx's outputs - Winforms repackages information about the dotnet/corefx api surface area, and thus those dotnet/corefx binaries should be 'shipped'. While we wouldn't necessarily want to ship multiple versions of the same binary in a release, we would ensure that the same dotnet/corefx version is coherent across the stack.

Updating dependencies in your local repository

Sometimes it may be useful to update the dependency state of your local repository against the latest builds. This might be useful when:

• Manually updating to create a new PR.
• Filling out missing information (e.g. version and sha) in Version.Details.xml prior to committing a new dependency.
• Updating to the latest binaries on a different channel for testing.

darc reads the Version.Details.xml file and notes the dependency name and repository uri of each dependency. Then, given an input channel, it looks up the latest build of each dependency's repository that has been applied to the channel. It then updates the Version.Details.xml and other version files (e.g. Versions.props) based on the newest information.

Continuing with the example from Adding dependencies to a repository, let's say I just added a dependency on Microsoft.NETCore.App out of core-setup. I want to fill in the missing information prior to check-in. I know that the channel that .NET 5 day to day development for core-setup targeting is '.NET 5 Dev', so by doing:

PS C:\enlistments\arcade> darc update-dependencies --channel ".NET 5 Dev" --name "Microsoft.Netcore.app"

Updating 'Microsoft.NETCore.App': '' => '3.0.0-preview-27401-3' (from build '20190201.3' of 'https://github.com/dotnet/core-setup')
  Dependency name normalized to 'Microsoft.NETCore.App'
Local dependencies updated from channel '.NET 5 Dev'.

PS C:\enlistments\arcade> git diff
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index edadff27..516e8e6e 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -1,6 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
-  <ProductDependencies></ProductDependencies>
+  <ProductDependencies>
+    <Dependency Name="Microsoft.NETCore.App" Version="3.0.0-preview-27401-3">
+      <Uri>https://github.com/dotnet/core-setup</Uri>
+      <Sha>b50554ac9a96fedc8580fa6090b6e9e75a23193b</Sha>
+    </Dependency>
+  </ProductDependencies>
   <ToolsetDependencies>
     <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="1.0.0-beta.19080.6">
       <Uri>https://github.com/dotnet/arcade</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index a1d683c1..dbf3fe0e 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -60,6 +60,7 @@
     <MicrosoftDiaSymReaderConverterVersion>1.1.0-beta1-62810-01</MicrosoftDiaSymReaderConverterVersion>
     <MicrosoftDiaSymReaderNativeVersion>1.7.0</MicrosoftDiaSymReaderNativeVersion>
+    <MicrosoftNETCoreAppVersion>3.0.0-preview-27401-3</MicrosoftNETCoreAppVersion>
   </PropertyGroup>
   <PropertyGroup>
     <RestoreSources>
@@ -69,4 +70,8 @@
       https://dotnet.myget.org/F/symreader/api/v3/index.json
     </RestoreSources>
   </PropertyGroup>
+  <!--Package names-->
+  <PropertyGroup>
+    <MicrosoftNETCoreAppPackage>Microsoft.NETCore.App</MicrosoftNETCoreAppPackage>
+  </PropertyGroup>
 </Project>

Alternately, let's say I'm working on updating to the latest arcade, which has a change I need to react to. I check out a branch locally off of master, then run update-dependencies against the tools channel ('.NET Tools - Latest') to pull in the latest script files:

PS C:\enlistments\core-setup> darc update-dependencies --channel ".NET Tools - Latest"
Updating 'Microsoft.DotNet.Arcade.Sdk': '1.0.0-beta.19080.6' => '1.0.0-beta.19081.3' (from build '20190131.3' of 'https://github.com/dotnet/arcade')
Local dependencies updated from channel '.NET Tools - Latest'.

PS C:\enlistments\core-setup> git diff
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 2b845202..1fb125a0 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -21,9 +21,9 @@
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="1.0.0-beta.19080.6">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="1.0.0-beta.19081.3">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>14d1133b6074b463784a7adbbf385df0462f4010</Sha>
+      <Sha>1e859f1c17fffbe9c4fb6bbfc0fc71cd0c56563b</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>
diff --git a/eng/common/darc-init.ps1 b/eng/common/darc-init.ps1
index 96cad844..57db185d 100644
--- a/eng/common/darc-init.ps1
+++ b/eng/common/darc-init.ps1
@@ -19,7 +19,7 @@ function InstallDarcCli ($darcVersion) {
   # Until we can anonymously query the BAR API for the latest arcade-services
   # build applied to the PROD channel, this is hardcoded.
   if (-not $darcVersion) {
-    $darcVersion = '1.1.0-beta.19057.9'
+    $darcVersion = '1.1.0-beta.19081.1'
   }

   $arcadeServicesSource = 'https://dotnetfeed.blob.core.windows.net/dotnet-arcade/index.json'
diff --git a/global.json b/global.json
index 8e5dab10..ede83435 100644
--- a/global.json
+++ b/global.json
@@ -3,6 +3,6 @@
     "dotnet": "2.1.300"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "1.0.0-beta.19080.6"
+    "Microsoft.DotNet.Arcade.Sdk": "1.0.0-beta.19081.3"
   }
 }

Removing dependencies from a repository

Removing a dependency from a repository involves simply removing the appropriate Dependency block from eng/Version.Details.xml and committing. At that point, neither darc nor Maestro++ will know anything about it any longer.

Changing a dependency's type

To change a dependency's type, move the Dependency element from the parent ProductDependencies element into ToolsetDependencies (or vice versa) and commit. See Toolset vs. Product Dependencies

'Pinning' dependencies so they do not update.

By default on each operation (e.g. subscription updates or darc update-dependencies), darc and Maestro will update all applicable dependencies in eng/Version.Details.xml and associated files. For instance, if a subscription from core-setup's '.NET 5 Dev' channel to core-sdk's master branch produces 3 outputs, Maestro will attempt to update any matching inputs in core-sdk's eng/Version.Details.xml file. In some cases, it may be necessary to pin dependencies so they do not move (e.g. if a breaking change requires extended work).

This is possible by adding a Pinned="true" attribute to the dependency information. If Pinned is not supplied, the default is "false".

PS C:\enlistments\arcade> cat .\eng\Version.Details.xml
<?xml version="1.0" encoding="utf-8"?>
<Dependencies>
  <ProductDependencies>
    <Dependency Name="Microsoft.NETCore.App" Version="3.0.0-preview-27401-3" Pinned="true">
      <Uri>https://github.com/dotnet/core-setup</Uri>
      <Sha>b50554ac9a96fedc8580fa6090b6e9e75a23193b</Sha>
    </Dependency>
  </ProductDependencies>
  <ToolsetDependencies>
    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="1.0.0-beta.19080.6">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>14d1133b6074b463784a7adbbf385df0462f4010</Sha>
    </Dependency>
    <Dependency Name="Microsoft.DotNet.Build.Tasks.Feed" Version="2.2.0-beta.19080.6">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>14d1133b6074b463784a7adbbf385df0462f4010</Sha>
    </Dependency>
    <Dependency Name="Microsoft.DotNet.Maestro.Tasks" Version="1.0.0-beta.19060.8">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>67384d20d310611afc1c2b4dd3b953fda182def4</Sha>
    </Dependency>
    <Dependency Name="Microsoft.DotNet.SignTool" Version="1.0.0-beta.19080.6">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>14d1133b6074b463784a7adbbf385df0462f4010</Sha>
    </Dependency>
    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="2.0.0-beta.19080.6">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>14d1133b6074b463784a7adbbf385df0462f4010</Sha>
    </Dependency>
  </ToolsetDependencies>
</Dependencies>

Coherent parent dependencies

Coherent parent dependencies are a way to relate two dependencies within your repository. A dependency with a coherent parent will update its version based on the version of the dependency that appears within the subtree of the coherent parent. This essentially keeps the dependency from moving 'ahead' of another dependency in your repo.

This is most typically used when referencing corefx, coreclr, and core-setup outputs. Microsoft.NETCore.App encodes information about the corefx and coreclr runtime binaries that it has as dependencies itself. Repositories downstream may need to take dependencies on both Microsoft.NETCore.App as well as specific corefx packages. If the corefx packages move ahead of what is referenced in Microsoft.NETCore.App, issues may occur. Specifying a coherent parent that ties the corefx dependencies to Microsoft.NETCore.App will avoid this.

The subtree of the coherent parent is the tree of builds that the parent depends on, including transitive dependencies. To perform a coherent parent update, Darc searches the assets in the subtree to find the newest-built asset matching the dependency that declared the coherent parent. Darc then assigns that version to the dependency.

Strict Coherency

This current default model of coherency (find the newest-built asset) has some severe drawbacks:

• Build information is required - The current algorithm picks the newest build asset in the subtree. This means that a build lookup is required for each every build in the tree. This is not only time consuming, it is also fragile. Loss of BAR data would mean that CPD constraints could not be satisfied.
• Newest may not be the desired choice - More than one version of the asset may appear within the subtree. While newest is chosen, this does not mean that newest is the correct choice. Consider the following:
  • dotnet/efcore ties dependency Foo to Bar, coming from dotnet/extensions. Foo is produced out of dotnet/core-setup.
  • dotnet/extensions has Foo pinned to version 1.0.0, but also has dependencies on another, newer dotnet/core-setup build that also produced Foo at 1.0.1.
  • CPD will choose Foo to be 1.0.1. This may be what the repo owner wished, but they may also simply have wanted 1.0.0.
• Incremental servicing can cause version regressions - This is perhaps the biggest drawback of the current algorithm. Consider the following:
  • dotnet/efcore ties dependency Foo to Bar, coming from dotnet/extensions. Foo is produced out of dotnet/core-setup, but only when it has changes for an upcoming release.
  • dotnet/extensions does not have a direct dependency on Foo.
  • dotnet/extensions has a dependency on another incrementally-serviced package produced out of dotnet/core-setup. This package has not been serviced recently, but when it was, Foo was also serviced, producing 1.0.3.
  • dotnet/core-setup just serviced Foo @ 1.0.10, but for the next release it is not producing that package.
  • When dotnet/core-setup build is ingested into dotnet/efcore and dotnet/extensions for the next release, the CPD algorithm will no longer find Foo @ 1.0.10 in the build asset graph. It has simply disappeared because there is no longer a reference to any build that produced Foo @ 1.0.10. Instead, it will find 1.0.3, as this reference still exists.

Strict coherency eliminates these problems by doing the following: If dependency Foo is tied to coherent parent Bar, and Bar comes from dotnet/extensions @ 12345, then dotnet/extensions @ 12345 must have a direct dependency on Foo. The version of Foo is directly copied from the version at dotnet/extensions @ 12345. This ensures the following:

• No build information is utilized and the CPD evaluation only involves a single version file lookup.
• There is no choice to make. There is only one possible version for Foo, since a dependency can only appear once within a Version.Details.xml file.

The downside of CPD strict is that dependencies that are not directly utilized within a repo are often required to appear in their Version.Details.xml files. Overall, this is a small tradeoff for better performance and predictable behavior. Rollout of CPD strict as the default behavior is pending addition of new dependencies in various repos in the 3.x branches.

To try CPD strict on a repo, run the following command:

darc update-dependencies --strict-coherency --coherency-only

Specifying a coherent parent

To specify a coherent parent, add "CoherentParentDependency" attributes in your Version.Details.xml file, as shown below:

PS D:\enlistments\extensions\eng> cat .\Version.Details.xml
<?xml version="1.0" encoding="utf-8"?>
<!--

  This file is used by automation to update Versions.props and may be used for other purposes, such as
  static analysis to determine the repo dependency graph.  It should only be modified manually when adding
  or removing dependencies. Updating versions should be done using the `darc` command line tool.

  See https://github.com/dotnet/arcade/blob/master/Documentation/Darc.md for instructions on using darc.

-->
<Dependencies>
  <ProductDependencies>
    <Dependency Name="Microsoft.Win32.Registry" Version="4.6.0-preview6.19279.8" CoherentParentDependency="Microsoft.NETCore.App">
      <Uri>https://github.com/dotnet/corefx</Uri>
      <Sha>e23119d577e644d2c2a25419c88c1181681358e0</Sha>
    </Dependency>
    <Dependency Name="System.ComponentModel.Annotations" Version="4.6.0-preview6.19279.8" CoherentParentDependency="Microsoft.NETCore.App">
      <Uri>https://github.com/dotnet/corefx</Uri>
      <Sha>e23119d577e644d2c2a25419c88c1181681358e0</Sha>
    </Dependency>
    <Dependency Name="System.Data.SqlClient" Version="4.7.0-preview6.19279.8" CoherentParentDependency="Microsoft.NETCore.App">
      <Uri>https://github.com/dotnet/corefx</Uri>
      <Sha>e23119d577e644d2c2a25419c88c1181681358e0</Sha>
    </Dependency>
    <Dependency Name="System.Diagnostics.DiagnosticSource" Version="4.6.0-preview6.19279.8" CoherentParentDependency="Microsoft.NETCore.App">
      <Uri>https://github.com/dotnet/corefx</Uri>
      <Sha>e23119d577e644d2c2a25419c88c1181681358e0</Sha>
    </Dependency>
    <Dependency Name="System.Diagnostics.EventLog" Version="4.6.0-preview6.19279.8" CoherentParentDependency="Microsoft.NETCore.App">
      <Uri>https://github.com/dotnet/corefx</Uri>
      <Sha>e23119d577e644d2c2a25419c88c1181681358e0</Sha>
    </Dependency>
    <Dependency Name="System.IO.Pipelines" Version="4.6.0-preview6.19279.8" CoherentParentDependency="Microsoft.NETCore.App">
      <Uri>https://github.com/dotnet/corefx</Uri>
      <Sha>e23119d577e644d2c2a25419c88c1181681358e0</Sha>
    </Dependency>
    <Dependency Name="System.Reflection.Metadata" Version="1.7.0-preview6.19279.8" CoherentParentDependency="Microsoft.NETCore.App">
      <Uri>https://github.com/dotnet/corefx</Uri>
      <Sha>e23119d577e644d2c2a25419c88c1181681358e0</Sha>
    </Dependency>
    <Dependency Name="System.Runtime.CompilerServices.Unsafe" Version="4.6.0-preview6.19279.8" CoherentParentDependency="Microsoft.NETCore.App">
      <Uri>https://github.com/dotnet/corefx</Uri>
      <Sha>e23119d577e644d2c2a25419c88c1181681358e0</Sha>
    </Dependency>
    <Dependency Name="System.Security.Cryptography.Cng" Version="4.6.0-preview6.19279.8" CoherentParentDependency="Microsoft.NETCore.App">
      <Uri>https://github.com/dotnet/corefx</Uri>
      <Sha>e23119d577e644d2c2a25419c88c1181681358e0</Sha>
    </Dependency>
    <Dependency Name="System.Security.Cryptography.Xml" Version="4.6.0-preview6.19279.8" CoherentParentDependency="Microsoft.NETCore.App">
      <Uri>https://github.com/dotnet/corefx</Uri>
      <Sha>e23119d577e644d2c2a25419c88c1181681358e0</Sha>
    </Dependency>
    <Dependency Name="System.ServiceProcess.ServiceController" Version="4.6.0-preview6.19279.8" CoherentParentDependency="Microsoft.NETCore.App">
      <Uri>https://github.com/dotnet/corefx</Uri>
      <Sha>e23119d577e644d2c2a25419c88c1181681358e0</Sha>
    </Dependency>
    <Dependency Name="System.Text.Encodings.Web" Version="4.6.0-preview6.19279.8" CoherentParentDependency="Microsoft.NETCore.App">
      <Uri>https://github.com/dotnet/corefx</Uri>
      <Sha>e23119d577e644d2c2a25419c88c1181681358e0</Sha>
    </Dependency>
    <Dependency Name="System.Text.Json" Version="4.6.0-preview6.19279.8" CoherentParentDependency="Microsoft.NETCore.App">
      <Uri>https://github.com/dotnet/corefx</Uri>
      <Sha>e23119d577e644d2c2a25419c88c1181681358e0</Sha>
    </Dependency>
    <Dependency Name="Microsoft.NETCore.App" Version="3.0.0-preview6-27730-01">
      <Uri>https://github.com/dotnet/core-setup</Uri>
      <Sha>63abc77da6d99470caa5bfa0465afe244105e595</Sha>
    </Dependency>
    <Dependency Name="NETStandard.Library.Ref" Version="2.1.0-preview6-27730-01">
      <Uri>https://github.com/dotnet/core-setup</Uri>
      <Sha>63abc77da6d99470caa5bfa0465afe244105e595</Sha>
    </Dependency>
  </ProductDependencies>
  <ToolsetDependencies>
    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="1.0.0-beta.19302.2">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>e6a5d5f970bb872451c6310ae34eda31041fb552</Sha>
    </Dependency>
    <Dependency Name="Microsoft.DotNet.GenAPI" Version="1.0.0-beta.19302.2">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>e6a5d5f970bb872451c6310ae34eda31041fb552</Sha>
    </Dependency>
    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="2.0.0-beta.19302.2">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>e6a5d5f970bb872451c6310ae34eda31041fb552</Sha>
    </Dependency>
    <Dependency Name="Microsoft.NETCore.Platforms" Version="3.0.0-preview6.19279.8" CoherentParentDependency="Microsoft.NETCore.App">
      <Uri>https://github.com/dotnet/corefx</Uri>
      <Sha>e23119d577e644d2c2a25419c88c1181681358e0</Sha>
    </Dependency>
  </ToolsetDependencies>
</Dependencies>

Adding dependency flow

Dependency flow is the automatic movement of dependency information between repositories. This is done by Maestro++ keeping track of new builds in each repository and opening PRs in other repositories when those repositories' input dependencies in eng/Version.Details.xml match the outputs of the new builds.

These updates are selective and based on 'subscriptions'. A subscription describes an update operation for a specific repository+branch combination, mapping outputs of a repository that have been applied to a channel (virtual branch) onto matching inputs of the target repository+branch.

For example, a build of dotnet/corefx might be applied to the ".NET 5 Dev" channel. dotnet/core-setup maps new outputs of dotnet/corefx on the ".NET 5 Dev" channel onto its master branch.

A subscription has a few parts:

• Mapping of source repo + source channel => target repo + target branch
• An update rate (e.g. every day, every build, not at all)
• Whether a subscription is batchable or not. If batchable, all batchable subscriptions targeting the same repo+branch combination will share a PR. Note: Batchable subscriptions is currently only supported by the REST API. Please contact @dnceng to set up batchable subscriptions.
• A set of auto merge policies, if the subscription is not batchable. If batchable, merge policies are set on a repository level rather than a per-subscription level, as they end up shared between several subscriptions. Note: repository merge policies are currently unsupported in darc. Please contact @dnceng to set up repository merge policies.

For additional information and samples, see add-subscription

When should a subscription be used to update my repository's inputs?

Whenever you want regular dependency flow between two repositories. For example, every day (when there is a new source build) or on every new build.

What input channel should be used?

There are generally two channels for day to day use in .NET 5:

• '.NET 5 Dev' - Day to day builds of .NET 5 repositories are placed on this channel.
• '.NET Tools - Latest' - Arcade releases are placed on this channel.

So, if you're not adding a dependency on the https://github.com/dotnet/arcade repo, the source channel should be '.NET 5 Dev'. If you have other specific needs, contact @dnceng.

Halting and restarting dependency flow

Sometimes it's necessary to halt dependency flow into or out of a repository for a period of time. While there are lots of cases where this might be done, here are some typical examples:

• Shutting down changes for a release - The 'last' build of a repository like corefx has been produced, and now needs to propagate to the many places in the repository graph it is referenced.
• A change in another repository has a breaking change - Because Maestro++ can auto-merge PRs, a breaking change that isn't caught by CI might be continually propagated as it is the 'latest' build.
• A specific, isolated dependency of a specific repository needs to be kept at a specific version - A few dependencies of a repository should be kept at a specific version, while the rest are allowed to update.

darc and Maestro++ have a few mechanisms to enable such scenarios:

• Disabling or deleting a default channel association - By disabling a default channel association for a repo, no new builds of that repo will be automatically assigned to the targeted channel. This effectively halts dependency flow without altering all the subscriptions sourcing from that repository. Furthermore, if a selective fix needs to be flowed, the build containing that fix can be selectively assigned to correct channel and the existing subscriptions will flow as normal.

  Today this can only be done by either deleting or disabling an existing default channel association. Examples:

  Pausing new flow from aspnet/Extensions:

  # Disable by repo+branch+channel
  
  darc default-channel-status --disable --repo https://github.com/aspnet/Extensions --branch refs/heads/master --channel ".NET 5 Dev"
  
  # Disable by id.
  # Use get-default-channels to get the ID of the default channel association,
  then use default-channel-status to disable.
  
  darc get-default-channels
  
  # Find id of association in list
  (63)   https://github.com/aspnet/Extensions @ refs/heads/master -> .NET 5 Dev
  
  darc default-channel-status --disable --id 63
  

  Resuming flow from aspnet/Extensions:

• Disabling or deleting a subscription - By disabling or deleting a subscription, flow between two specific points can be halted. For instance, if arcade has a breaking change that passed core-setup's CI, then it may be necessary to remove flow temporarily while the issue is dealt with. Today, this is only possible via the command line tool by deleting the subscription, then recreating it when normal flow should be resumed:

  Pausing new flow from arcade to core-setup

  PS C:\enlistments\arcade> darc get-subscriptions --source-repo arcade --target-repo core-setup
  
  https://github.com/dotnet/arcade (.NET Tools - Latest) ==> 'https://github.com/dotnet/core-setup' ('master')
  - Id: 21e611eb-ab71-410e-ca98-08d61f236c94
  - Update Frequency: everyDay
  - Merge Policies:
    AllChecksSuccessful
      ignoreChecks =
                     [
                       "WIP",
                       "license/cla"
                     ]
  - Last Build: N/A
  
  PS C:\enlistments\arcade> darc delete-subscriptions --id 21e611eb-ab71-410e-ca98-08d61f236c94
  Successfully deleted subscription with id '21e611eb-ab71-410e-ca98-08d61f236c94'
  

  Resuming flow:

  PS C:\enlistments\arcade> darc add-subscription --channel '.NET Tools - Latest' --target-repo https://github.com/dotnet/core-setup
                            --target-branch master --update-frequency everyDay --all-checks-passed
                            --source-repo https://github.com/dotnet/arcade --ignore-checks 'WIP,license/cli'
  
  Successfully created new subscription with id '689a946e-2c12-4b0c-ccf6-08d688804ce4'.
  

• Pinning specific dependencies - Specific dependencies can be pinned when they should not move. This keeps the dependency from moving without altering subscriptions or channels. This is useful when only a subset of a specific repos dependencies should not move.

  To do this, add a Pinned="true" attribute to the dependency that should not move.

  PS C:\enlistments\arcade> cat .\eng\Version.Details.xml
  <?xml version="1.0" encoding="utf-8"?>
  <Dependencies>
    <ProductDependencies>
      <Dependency Name="Microsoft.NETCore.App" Version="3.0.0-preview-27401-3" Pinned="true">
        <Uri>https://github.com/dotnet/core-setup</Uri>
        <Sha>b50554ac9a96fedc8580fa6090b6e9e75a23193b</Sha>
      </Dependency>
    </ProductDependencies>
  

  Resume flow by removing the attribute or setting its value to "false". '

Viewing the dependency graph

The dependency graph is the transitive set of dependencies defined by the data in Version.Details.xml. Each dependency listed contains information on the source of the dependency, specifically which repository and sha it was generated from. Visiting that repository at the specified sha will yield another set of dependencies. Transitively visiting these repository+sha combinations will build up a repository graph. The graph may have cycles, and the transitive walk is stopped at those nodes. It may also be stopped at any toolset dependency unless those are specifically included with --include-toolset.

For detailed information on generating the dependency graph, see get-dependency-graph.

How to interpret incoherencies

Incoherencies in the graph are places where the same repo appears twice with different shas, or the same dependency appears twice at different versions (even if it was sourced from the same sha). Incoherencies are caused by multiple paths to the root node that run through the same repository, combined with different flow rates between repositories, varying graph depth, build breaks, etc.

Incoherencies aren't necessarily bad. During most of the development cycle, the graph is highly incoherent. What matters is whether those incoherencies will produce semantic differences in behavior. This is something that can generally only be interpreted by developers/product owners by looking at the substantive differences. The default position for day to day development is that incoherencies are not a big deal, but the default position for a shipping product is that non-toolset incoherencies should be removed. This can be done by halting dependency flow after "final" builds are done of incoherent repos. See Halting and restarting dependency flow for some options here.

For a rough example, let's say that at the end of the shipping cycle core-setup flows its 'last' build to core-sdk and other repos. The graph stabilizes. Then, at the last moment, they make a test only fix and check it in. It flows to core-sdk quickly, but gets held up in the other repos that pull Microsoft.NETCore.App due to them not taking any new PRs. This certainly counts as an incoherency, but because there is no semantic product difference between the two versions in the graph there may be no harm in shipping with that incoherency.

Gathering a build drop

Gathering a drop of the product or subpiece part of the product is a typical activity done by developers, release automation, etc. The darc tool can do this using the Build Asset Registry information alongside the dependency graph information.

A build drop is a gathering of all the outputs of a specific build that were reported to the Build Asset Registry into a local location. Optionally, this build drop may also include any builds that were inputs to this build, based on the dependency information in Version.Details.xml. Builds produce various outputs that go to various locations. For example, they may produce NuGet packages, zips, MSIs, etc. These may be available in the build artifacts, or may be located in various storage accounts. Gather-drop mines the Build Asset Registry for these locations and downloads them all to the local directory.

The drop is generally divided into two sections: shipping and non-shipping. Shipping dependencies are those that must be visible to customers. Non-shipping dependencies are those that generally serve as inter-repo transport. Some examples:

• Packages shipping to nuget.org - Shipping
• Coreclr transport packages - Nonshipping, since they get repackaged by core-setup
• Symbols - Shipping, since they go to symbol servers

What can I gather a drop for?

You can gather either an isolated or full (includes dependencies) drop for any build in the repository graph. Since the major components of the .NET Core stack are rooted at 3 different repositories, gathering a drop of those repositories will generate a drop for those 3 components and any of their inputs if --full is supplied.

• https://github.com/dotnet/core-sdk - SDK
• https://github.com/aspnet/AspNetCore - ASP.NET Core
• https://github.com/dotnet/core-setup - Runtime.

How do I find the root build for a drop?

gather-drop must be able to find a root build. This root build today is identified by either a repo+sha combo or a direct BAR build ID. For most repositories that build on every commit, providing the repo uri and latest sha will generate a drop:

PS C:\enlistments\core-sdk> git rev-parse HEAD
465a336c7a5ca3af2f6cf5172ddc0ebde620803b
PS C:\enlistments\core-sdk> darc gather-drop --repo https://github.com/dotnet/core-sdk
                            --commit 465a336c7a5ca3af2f6cf5172ddc0ebde620803b --output-dir C:\scratch\drop
...

If no build exists at that drop, darc will show an error. In this case, you might try other recent shas, or use the BAR swagger API (https://maestro.dot.net/swagger) to look up a build id. Remember to authenticate using a token from https://maestro.dot.net/. Better methods of obtaining the root build are coming soon.

The root build can then be provided using --id

PS C:\enlistments\core-sdk> darc gather-drop --id 1234 --output-dir C:\scratch\drop

Assigning an individual build to a channel

Builds are assigned to channels in one of two ways:

• A default channel
• Manually adding the build to the channel

A default channel is a note that says that every build of a repo on a specific branch should apply to that channel. This is useful because repositories generally do not change the purpose of some of their branches over time. For instance, core-setup's release/3.1 branch will like apply to servicing releases of .NET Core 3.1 forever. When a default channel is present, the necessary publishing steps will take place at the end of the build and assignment to the channel will take place once those are successful. Default channels can be added with the add-default-channel command.

There is also a way to assign one-off builds to a channel. This can be useful if builds only ocassionally apply to a channel, or if a default channel assocation was missed prior to a build being launched. This command launches a pipeline which performs the standard publishing steps using the build's artifact inputs, and then assigns the build to the specified channel. To run this command you need your darc client configured with an AzDO PAT which can launch builds, as well as the standard GitHub PATs. See Setting up your darc client for more information.

The default use case is shown below. The ID is the BAR build ID, which can be found in the Publish Build Assets task of the "Publish to Build Asset Registry" job in your build. See Locating the BAR build ID for a build.

darc add-build-to-channel --id 46856 --channel ".NET Core SDK 3.1.3xx"

There are a few interesting non-standard scenarios:

• If you don't want to publish you can pass: --skip-assets-publishing. The build will immediately apply to the new channel. You should only do this if you know the assets from this build are already available to downstream builds.
• By default, the publishing pipeline will use the same version of arcade that was referenced in the build you wish to assign. This may not be desirable if your repo is missing a required arcade fix. You can ask for the automation to use a different arcade version by passing --source-branch and --source-sha. These are the source branch and sha of arcade, not your repo. For instance, the following command will use arcade at sha 09bb9d929120b402348c9a0e9c8c951e824059aa in context of branch master (this is required by AzDO, but not particularly material to the functionality.)

  darc add-build-to-channel --id 46856 --channel ".NET Core SDK 3.1.3xx" --source-branch master
    --source-sha 09bb9d929120b402348c9a0e9c8c951e824059aa
  

Locating the BAR build ID for a build

To locate the BAR build ID for a build

1. Look for the Publish to Build Asset Registry job in your build.
2. Find the Publish Build Assets task
3. Look in the logs for that task, and note the build id:

D:\a\1\s\.dotnet\sdk\5.0.100-preview.1.20154.9\MSBuild.dll /nologo -maxcpucount /m -verbosity:m ...
  You are using a preview version of .NET Core. See: https://aka.ms/dotnet-core-preview
  Starting build metadata push to the Build Asset Registry...
  Getting a collection of dependencies from 'eng/Version.Details.xml' in repo 'D:\a\1\s\'...
  Reading 'eng/Version.Details.xml' in repo 'D:\a\1\s\' and branch ''...
  Reading 'eng/Version.Details.xml' from repo 'D:\a\1\s\' and branch '' succeeded!
  Calculated Dependencies:
      47406, IsProduct: True
      46268, IsProduct: True
      28178, IsProduct: True
      46393, IsProduct: True
      45658, IsProduct: True
      46931, IsProduct: True
      47770, IsProduct: True
      46613, IsProduct: True
      47380, IsProduct: True
      47391, IsProduct: True
      41865, IsProduct: True
      47632, IsProduct: False
  Metadata has been pushed. Build id in the Build Asset Registry is '47814'
  Found the following default channels:
      https://github.com/dotnet/installer@master => (131) .NET Core 5 Dev
  Determined build will be added to the following channels: [131]

4. The BAR build ID is 47814

Checking Merge Policies on Github

You will find them on the Checks tab of each updates PRs created by maestro. Depending on the merge policies set for the repository, you will find one or multiple check(s) (in a failed or successful state).

Command Reference

Common parameters

There are a few common parameters available on every command:

• -p, --password - Build Asset Registry password. You can obtain this password by going to https://maestro.dot.net/, logging in using the link in the top right, then generating a token using the menu in the top right. This setting overrides whatever BAR password was provided through darc authenticate.
• --github-pat - Personal access token used to authenticate GitHub. This is a GitHub PAT used to avoid rate limiting when accessing github to download arcade script files or version files. You only need a GitHub PAT with no authorization scopes checked. This setting overrides whatever GitHub PAT was provided through darc authenticate.
• --azdev-pat - Personal access token used to authenticate to Azure DevOps. This token should have Build Execute and Code Read permissions. This setting overrides whatever Azure DevOps PAT was provided through darc authenticate. If no PAT is set, local credentials are used.
• --bar-uri - URI of the build asset registry service to use. Typically left as its default (https://maestro.dot.net) This setting overrides the Build Asset Registry URI provided through darc authenticate.
• --verbose - Turn on additional output.
• --debug - Turn on debug output
• --help - Display help
• --version - Display version of darc.

Individual darc commands are described below.

add-channel

Add a new channel. This creates a new tag that builds can be applied to.

This is not a typical operation and you should consult with the (@dnceng) engineering team before doing so.

Sample:

PS D:\enlistments\arcade> darc add-channel --name "Foo"

Successfully created new channel with name 'Foo'.

Parameters

• -n, --name - (Required). Name of channel to create.
• -c, --classification - Classification of channel. Defaults to 'dev'. Today, this classification does not affect any functionality
• -i, --internal - Channel is internal only. This option is currently non-functional

See also:

• delete-channel
• get-channels

set-goal

Sets a goal build time for the definition per channel in minutes. Only dnceng is in scope. This is captured for the Power BI dashboard.

Sample:

PS D:\enlistments\arcade> darc set-goal --minutes 38 --definition-id 6 --channel ".Net 5 Dev"

38

Parameters

• -c, --channel - (Required) Name of the channel.
• -d, --definition-id - (Required) Azure DevOps Definition Id.
• -m, --minutes - (Required) Goal time in minutes.

get-goal

Get the goal build time for a definition per channel in minutes. Only dnceng is in scope. This is captured for the Power BI dashboard

Sample:

PS D:\enlistments\arcade> darc get-goal --definition-id 6 --channel ".Net 5 Dev"

38

Parameters

• -c, --channel - (Required) Name of the channel.
• -d, --definition-id - (Required) Azure DevOps Definition Id.

add-dependency

Add a new tracked dependency to the Version.Detail.xml file in your local repo. This dependency is also added to eng/Versions.props as well as global.json (for certain dependencies, such as the Arcade SDK). This new dependency can then be updated using update-dependencies. After merging the changes into the remote github or AzDO repository, the dependency can be updated by Maestro++ if there is a corresponding subscription targeting that repo.

When adding a new dependency, only name and type are required. For a detailed discussion on adding new dependencies to a repository, see Adding dependencies to a repository

Parameters

• -n, --name - (Required) Name of dependency to add. This is the name of the package you wish to track. For example, this might be "Microsoft.NETCore.App" or 'System.Security.Cryptography.Cng'
• -t, --type - (Required) 'toolset' or 'product'. See Adding dependencies to a repository for a discussion on dependency types.
• -v, --version - Dependency version.
• -r, --repo - Repository where the dependency was built.
• -c, --commit - SHA at which the dependency was produced.

Sample

eng\Version.Details.xml before running add:

PS D:\enlistments\arcade> cat .\eng\Version.Details.xml
<?xml version="1.0" encoding="utf-8"?>
<Dependencies>
  <ProductDependencies></ProductDependencies>
  <ToolsetDependencies>
    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="1.0.0-beta.19080.6">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>14d1133b6074b463784a7adbbf385df0462f4010</Sha>
    </Dependency>
    <Dependency Name="Microsoft.DotNet.Build.Tasks.Feed" Version="2.2.0-beta.19080.6">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>14d1133b6074b463784a7adbbf385df0462f4010</Sha>
    </Dependency>
    <Dependency Name="Microsoft.DotNet.Maestro.Tasks" Version="1.0.0-beta.19060.8">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>67384d20d310611afc1c2b4dd3b953fda182def4</Sha>
    </Dependency>
    <Dependency Name="Microsoft.DotNet.SignTool" Version="1.0.0-beta.19080.6">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>14d1133b6074b463784a7adbbf385df0462f4010</Sha>
    </Dependency>
    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="2.0.0-beta.19080.6">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>14d1133b6074b463784a7adbbf385df0462f4010</Sha>
    </Dependency>
  </ToolsetDependencies>
</Dependencies>

Running add-dependency

PS D:\enlistments\arcade> darc add-dependency --name "Microsoft.NETCore.App" --type "product" --version 1
                          --commit 2 --repo https://github.com/dotnet/core-setup

eng\Version.Details.xml after add-dependency:

PS D:\enlistments\arcade> cat .\eng\Version.Details.xml
<?xml version="1.0" encoding="utf-8"?>
<Dependencies>
  <ProductDependencies>
    <Dependency Name="Microsoft.NETCore.App" Version="1">
      <Uri>https://github.com/dotnet/core-setup</Uri>
      <Sha>2</Sha>
    </Dependency>
  </ProductDependencies>
  <ToolsetDependencies>
    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="1.0.0-beta.19080.6">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>14d1133b6074b463784a7adbbf385df0462f4010</Sha>
    </Dependency>
    <Dependency Name="Microsoft.DotNet.Build.Tasks.Feed" Version="2.2.0-beta.19080.6">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>14d1133b6074b463784a7adbbf385df0462f4010</Sha>
    </Dependency>
    <Dependency Name="Microsoft.DotNet.Maestro.Tasks" Version="1.0.0-beta.19060.8">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>67384d20d310611afc1c2b4dd3b953fda182def4</Sha>
    </Dependency>
    <Dependency Name="Microsoft.DotNet.SignTool" Version="1.0.0-beta.19080.6">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>14d1133b6074b463784a7adbbf385df0462f4010</Sha>
    </Dependency>
    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="2.0.0-beta.19080.6">
      <Uri>https://github.com/dotnet/arcade</Uri>
      <Sha>14d1133b6074b463784a7adbbf385df0462f4010</Sha>
    </Dependency>
  </ToolsetDependencies>
</Dependencies>

See also:

• update-dependencies
• Adding dependencies to a repository

add-default-channel

Adds a new default channel mapping. A default channel maps each new build of a specific branch of a repository onto a specific channel. While builds can be selectively and manually applied to channels, this is generally inconvenient for day to day development in most cases. In general, until release shutdown, each build of a branch should always be applied to its "normal" channel.

Note that the branch specified should almost always be "refs/heads/{branchName}", unless you explicitly know otherwise.

This is because the BAR reporting functionality pulls the branch name from the Azure DevOps built in pipeline variables, which specify refs/heads/foo vs. foo. If your repository is manually reporting to BAR without using the Arcade templates, then this name may be different.

Default channel mappings can be deleted with delete-default-channel.

Parameters

• --channel - (Required) Name of channel that a build of 'branch' and 'repo' should be applied to.
• --branch - (Required) Build of 'repo' on this branch will be automatically applied to 'channel'. Should generally be "refs/heads/branchName"
• --repo - (Required) Build of this repo on 'branch' will be automatically applied to 'channel'

Sample

PS D:\enlistments\arcade> darc add-default-channel --channel ".Net 5 Dev" --branch refs/heads/master --repo https://github.com/dotnet/arcade

See also:

• get-channels
• get-default-channels
• delete-default-channel
• set-goal
• get-goal

add-subscription

Adds a new subscription to Maestro++.

A subscription describes an update operation for a specific repository+branch combination, mapping outputs of a repository that have been applied to a channel (virtual branch) onto matching inputs of the target repository+branch.

For example, a build of dotnet/corefx might be applied to the ".NET 5 Dev" channel. dotnet/core-setup maps new outputs of corefx on the ".NET 5 Dev" channel onto its master branch.

A subscription has a few parts:

• Mapping of source repo + source channel => target repo + target branch
• An update rate (e.g. every day, every build, not at all)
• Whether a subscription is batchable or not. If batchable, all batchable subscriptions targeting the same repo+branch combination will share a PR. Note: Batchable subscriptions are currently unsupported in darc
• A set of auto merge policies, if the subscription is not batchable. If batchable, merge policies are set on a repository level rather than a per-subscription level, as they end up shared between several subscriptions. Note: repository merge policies are currently unsupported in darc

add-subscription has two modes of operation:

• Interactive mode (default) - Interactive mode will take whatever input parameters were provided on the command line (if any) and pop an editor where the user can provide the subscription input parameters.
• Command-line only mode (-q) - In this mode, the full set of input options must be supplied.

Upon saving and closing the editor, or running the darc command if in command line mode (-q), the darc tool submits the new subscription to Maestro++. If successful, the id of the new subscription is returned.

Parameters

• -channel - (Required if -q is passed) Name of channel that is the source of the subscription. For a list of channels, see get-channels
• --source-repo - (Required if -q is passed) Source repository for the subscription. Builds of this repository that appear on the specified --channel will have matching outputs applied to the inputs (specified in eng/Version.Details.xml) of --target-repo and --target-branch.
• --target-repo - (Required if -q is passed) Target repository for the subscription. Builds of --source-repo that appear on the specified --channel will have matching outputs applied to the inputs (specified in eng/Version.Details.xml) of this repo's --target-branch
• --target-branch - (Required if -q is passed) Target branch for the subscription. Builds of --source-repo that appear on the specified --channel will have matching outputs applied to the inputs (specified in eng/Version.Details.xml) on this branch of --target-repo.
• --update-frequency - (Required if -q is passed) Frequency of updates. Valid values are: 'none', 'everyDay', or 'everyBuild'. everyDay is applied at 5am. Subscriptions with 'none' frequency can still be triggered using trigger-subscriptions
• --all-checks-passed - Merge policy. A PR is automatically merged by Maestro++ if there is at least one check and all are passed. Optionally provide a comma separated list of ignored check with --ignore-checks.
• --ignore-checks - Merge policy. For use with --all-checks-passed. A set of checks that are ignored. Typically, in github repos the "WIP" and "license/cla" checks are ignored.
• --no-extra-commits - Merge policy. A PR is automatically merged if no non-bot commits exist in the PR.
• --no-requested-changes - Merge policy. A PR is automatically merged as long as no changes are requested on the PR.
• --standard-automerge - Merge policy. A PR is automatically merged if all checks are passed and no changes are requested.
• -q, --quiet - Non-interactive mode (requires all elements to be passed on the command line).

Sample:

PS D:\enlistments\arcade-services> darc add-subscription --channel ".NET Tools - Latest"
                                   --source-repo https://github.com/dotnet/arcade
                                   --target-repo https://dev.azure.com/dnceng/internal/_git/dotnet-optimization
                                   --target-branch master --update-frequency everyDay --all-checks-passed -q

Successfully created new subscription with id '4f300f68-8800-4b14-328e-08d68308fe30'.

Available merge policies

• Standard - This is the recommended merge policy. It encompasses two existing merge policies:

  • All PR checks must be successful, ignoring typical checks in GitHub in AzDO that do not indicate the quality of the PR (e.g. the WIP check) as well as a check that no changes have been requested on the PR.

  YAML format for interactive mode:

   - Name: Standard
  

• AllChecksSuccessful - All PR checks must be successful, potentially ignoring a specified set of checks. Checks might be ignored if they are unrelated to PR validation. The check name corresponds to the string that shows up in GitHub/Azure DevOps.

  YAML format for interactive mode:

   - Name: AllChecksSuccessful
     Properties:
       ignoreChecks:
       - WIP
       - license/cla
       - <other check names>
  

• RequireChecks - Require that a specific set of checks pass. The check name corresponds to the string that shows up in GitHub/Azure DevOps.

  YAML format for interactive mode:

   - Name: RequireChecks
     Properties:
       checks:
       - MyCIValidation
       - CI
       - <other check names>
  

• NoExtraCommits - If additional non-bot commits appear in the PR, the PR should not be merged.

  YAML format for interactive mode:

   - Name: NoExtraCommits
  

See also:

• delete-subscriptions
• get-subscriptions
• trigger-subscriptions
• get-channels

add-build-to-channel

Adds an existing build to a channel.

Much of the time, builds are automatically added to channels with default channel associations (See add-default-channel). Occasionally, automatic assignment is turned off for various reasons but we may still need to assign a specific build to a channel.

This can be done with the add-build-to-channel command. It takes two parameters:

• Name of the channel you want to assign a build to
• BAR build id of the build to assign to the specified channel. This can be found by looking at the "Publish to Build Asset Registry" leg of an official build.

Parameters

• --id - (Required). BAR id of build to assign to channel.
• --channel - (Required). Channel to assign build to.
• --publish-installers-and-checksums (Required) Whether installers and checksums should be published. All the installers and checksums usually go to the same storage account. By setting this to true we are agreeing to republish them everytime a new channel is added. This has to be set to true at all times.
• --publishing-infra-version - Version of publishing, for single stage publishing infrastructure use 3 else for multi stage publishing infra with each stage representing available channel(s) use 2. Default is 2.
• --signing-validation-parameters - Additional (MSBuild) properties to be passed to signing validation
• --symbol-publishing-parameters -Additional (MSBuild) properties to be passed to symbol publishing
• --default-channels - Assign build to the default channel(s). Required if --channel is not specified.
• --source-branch - Branch that should be used as base for the promotion build.
• --source-sha - SHA that should be used as base for the promotion build.
• --validate-signing - Perform signing validation.
• --validate-nuget - Perform NuGet metadata validation.
• --validate-sourcelink - Perform SourceLink validation.
• --validate-SDL - Perform SDL validation.
• --sdl-validation-parameters - Custom parameters for SDL validation.
• --sdl-validation-continue-on-error - Ignore SDL validation errors.
• --skip-assets-publishing - Add the build to the channel without publishing assets to the channel's feeds.
• --no-wait - If set, Darc won't wait for the asset publishing and channel assignment. The operation continues asynchronously in AzDO.

Sample If using --publishing-infra-version 2

darc add-build-to-channel --id 13078 --channel ".NET Core 3 Release" --publish-installers-and-checksums
Assigning the following build to channel '.NET Core 3 Release':

Repository:    https://github.com/dotnet/core-setup
Branch:        refs/heads/release/3.0
Commit:        e4e28a834dcbf63b8ef098b32996a35bbb9f3699
Build Number:  20190603.02
Date Produced: 6/3/2019 10:09 AM
Build Link:    https://dev.azure.com/dnceng/internal/_build/results?buildId=209556
BAR Build Id:  13078
Channels:
The following repos/branches will apply this build immediately:
  https://github.com/dotnet/core-sdk @ release/3.0.1xx
  https://github.com/aspnet/Extensions @ release/3.0-preview6
  https://github.com/dotnet/toolset @ release/3.0.1xx
  https://github.com/dotnet/winforms-datavisualization @ release/3.0
The following repos/branches will apply this change at a later time, or not by default.
To flow immediately, run the specified command
  https://github.com/dotnet/winforms @ release/3.0 (update freq: None)
    darc trigger-subscriptions --id 22859ac6-b4a6-4fce-54c7-08d6c734018a
If the above example build doesn't happen to be the latest in a channel but you want trigger-subscriptions to use it:
    darc trigger-subscriptions --id 22859ac6-b4a6-4fce-54c7-08d6c734018a --build 13078

If using --publishing-infra-version 3

darc add-build-to-channel --id 65256 --channel ".NET 6 Dev" --publishing-infra-version 3 --publish-installers-and-checksums

Waiting '60' seconds for promotion build to complete.

Build '65199' was successfully added to the target channel(s).
Assigning build '65199' to the following channel(s):
	.NET 6 Dev

Repository:    https://github.com/dotnet/runtime
Branch:        master
Commit:        0e30f6fdc3ba5e1ef7ffb952fcb4762e5041c491
Build Number:  20200921.2
Date Produced: 9/21/2020 1:08 PM
Build Link:    https://dev.azure.com/dnceng/internal/_build/results?buildId=823133
BAR Build Id:  65199
Released:      False
Channels:
The following repos/branches will apply this build immediately:
  https://dev.azure.com/dnceng/internal/_git/dotnet-wpf-int @ master
The following repos/branches will apply this change at a later time, or not by default.
To flow immediately, run the specified command
  https://github.com/dotnet/ef6 @ master (update freq: EveryDay)
    darc trigger-subscriptions --id 9e51514d-a37b-46b2-d464-08d76e1d3434

authenticate

Set up your darc client so that the PAT or password inputs do not need to be passed on each command invocation. This command opens up an editor form with various password settings. These values are overridden by the --password, --bar-uri, --azdev-pat and --github-pat settings common to all commands.

See Setting up Your Darc Client for more information.

Parameters

None.

Sample

PS D:\enlistments\arcade> darc authenticate

(opens in editor)

# Create new BAR tokens at https://maestro.dot.net/Account/Tokens
bar_password=***
# Create new GitHub personal access tokens at https://github.com/settings/tokens (no auth scopes needed)
github_token=***
# Create new Azure Dev Ops tokens at https://dev.azure.com/dnceng/_details/security/tokens (code read scope needed)
azure_devops_token=***
build_asset_registry_base_uri=https://maestro.dot.net/

# Storing the required settings...
# Set elements above depending on what you need

clone

Clone a remote repo and all of its dependency repos. This is typically used for source build purposes.

Parameters

• --repo - Remote repository to start the clone operation at. If none specified, clone all that the current repo depends on.
• -v, --version - Branch, commit or tag to start at in the remote repository. Required if repo is specified.
• --repos-folder - Full path to folder where all the repos will be cloned to, e.g. C:\repos. Default: current directory.
• --git-dir-folder - Advanced: Full path to folder where .git folders will be stored, e.g. C:\myrepos.git\modules. Default: each repo's folder.
• --include-toolset - Include toolset dependencies.
• --ignore-repos - Semicolon-separated list of repo URIs to ignore. e.g. 'https://dev.azure.com/devdiv/DevDiv/_git/DotNet-Trusted;https://github.com/dotnet/arcade-services'
• -d, --depth - (Default: 4294967295) Depth to clone the repos to. Defaults to infinite.

default-channel-status

Enables or disables a default channel association. Default channels associations that are disabled will not apply to new builds. This effectively turns off flow out of the repository. Builds may still be applied manually to any channel. using add-build-to-channel.

Parameters

• -e, --enable - Enable default channel.
• '-d, --disable` - Disable default channel.
• '--id` - (Default: -1) Existing default channel id
• '--channel` - Existing default channel association target channel name.
• '--branch` - Existing default channel association source branch name.
• '--repo` - Existing default channel association source repository name.

Sample:

PS D:\enlistments\websdk> darc get-default-channels --source-repo core-setup --branch release/3.0
(192)  https://github.com/dotnet/core-setup @ refs/heads/release/3.0 -> .NET Core 3 Release

PS D:\enlistments\websdk> darc default-channel-status --disable --id 192
Default channel association has been disabled.

PS D:\enlistments\websdk> darc default-channel-status --enable --id 192
Default channel association has been enabled.

See also:

• add-build-to-channel
• add-default-channel
• delete-default-channel
• get-default-channels
• set-goal
• get-goal

delete-channel

Delete a channel. This channel must not be in use by any subscriptions.

This is not a typical operation and you should consult with the (@dnceng) engineering team before doing so.

Parameters

• -n, --name - (Required) Name of channel to delete.

Sample:

PS D:\enlistments\arcade> darc delete-channel --name "Foo"

Successfully deleted channel 'Foo'.

See also:

• add-channel
• get-channels

delete-default-channel

Deletes a default channel mapping. Deleting will not affect any existing builds, but new builds of the specified repos will not be applied to the target channel.

You can obtain a list of current default channel mappings with get-default-channels

• --channel - (Required) Name of channel that builds of 'repository' and 'branch' should not apply to.
• --branch - (Required) Repository that should have its default association removed.
• --repo - (Required) Branch that should have its default association removed.

Sample

PS D:\enlistments\arcade> darc delete-default-channel --channel ".Net 5 Dev" --branch refs/heads/master
                          --repo https://github.com/dotnet/arcade

See also:

• add-default-channel
• get-default-channels

delete-subscriptions

Deletes a specified subscription by its id. This removes the subscription from Maestro and no new updates based on the subscription will be created. Any updates currently in progress will not be closed, but will not auto-merge. To obtain the id of a subscription to be deleted, see get-subscriptions.

Sample:

PS D:\enlistments\arcade-services> darc delete-subscriptions --id 4f300f68-8800-4b14-328e-08d68308fe30

Successfully deleted subscription with id '4f300f68-8800-4b14-328e-08d68308fe30'

See also:

• add-subscription
• get-subscriptions
• trigger-subscriptions

gather-drop

Gathers a build drop of a repository into a local directory.

A build drop is a gathering of all the outputs of a specific build that were reported to the Build Asset Registry into a local location. Optionally, this build drop may also include any builds that were inputs to this build, based on the dependency information in Version.Details.xml. Builds produce various outputs that go to various locations. For example, they may produce NuGet packages, zips, MSIs, etc. These may be available in the build artifacts, or may be located in various storage accounts. Gather-drop mines the Build Asset Registry for these locations and downloads them all to the local directory.

gather-drop operates in two modes: normal and full. In normal mode, only the outputs for the desired build (the 'root' build) are downloaded. In full mode, the tool will then look up the dependency version information for the sha that was built, then find the builds that created those inputs. The same is done until all potential nodes are visited. Traversal will break when a cycle is reached, when a node has no additional dependencies, or when the dependencies it has are only toolset and --include-toolset has not been supplied.

The output directory structure is as follows:

• All outputs will be downloaded under the root folder, in either a 'shipping' or 'nonshipping' folder (if --nonshipping is passed and the build contains non-shipping binaries). Under these folders will be two additional folders: 'assets' and 'packages'. Assets contains all non-package outputs, while 'packages' contains all NuGet packages.
• Each repository in the build structure will be placed in a separate directory, with the ID of the build under that directory. Under each build will be a 'shipping' folder and potentially a 'nonshipping' folder (if --nonshipping is passed and the build contains non-shipping binaries). Under these folders will be two additional folders: 'assets' and 'packages'. Assets contains all non-package outputs, while 'packages' contains all NuGet packages.
• A manifest file will be generated under the root folder containing information about all gathered builds

Parameters

• -i, --id- BAR ID(s) of the root build(s) that we want to gather. comma separated.
• -r, --repo - Gather a build drop for a build of this repo. Requires --commit or --channel.
• -c, --commit - Commit to gather a drop for.
• -o, --output-dir - Required. Output directory to place build drop.
• --max-downloads - (Default: 4) Maximum concurrent downloads.
• --download-timeout - (Default: 30) Timeout in seconds for downloading each asset.
• -f, --full - Gather the full drop (build and all input builds).
• --release-name- (Default: 3.0.0-previewN) Name of release to use when generating release json.
• --continue-on-error - Continue on error rather than halting.
• --non-shipping- Include non-shipping assets.
• `--overwrite- Overwrite existing files at the destination.
• --dry-run - Do not actually download files, but print what we would do.
• --include-toolset- Include toolset dependencies.
• --channel - Download the latest from this channel. Matched on substring.
• --no-workarounds - Do not allow workarounds when gathering the drop.
• --skip-existing - Skip files that already exist at the destination.
• --include-released - Include builds that are marked as released
• --latest-location - Download assets from their latest known location.
• --sas-suffixes - List of potential uri suffixes that can be used if anonymous access to a blob uri fails. Appended directly to the end of the URI (use full SAS suffix starting with '?'.
• --asset-filter - Only download assets matching the given regex filter

Sample:

Isolated drop:

PS C:\enlistments\core-sdk> darc gather-drop --output-dir C:\scratch\core-sdk-drop\
                            --commit 465a336c7a5ca3af2f6cf5172ddc0ebde620803b
                            --repo https://github.com/dotnet/core-sdk

Determining what builds to download...
Looking up builds of https://github.com/dotnet/core-sdk@465a336c7a5ca3af2f6cf5172ddc0ebde620803b
Root build - Build number 20190201.2 of https://github.com/dotnet/core-sdk @ 465a336c7a5ca3af2f6cf5172ddc0ebde620803b

Gathering drop for build 20190201.2 of https://github.com/dotnet/core-sdk
  Downloading asset Sdk/3.0.100-preview-010204/dotnet-sdk-3.0.100-preview-010204-osx-x64.pkg.sha
  https://dotnetclichecksums.blob.core.windows.net/dotnet/Sdk/3.0.100-preview-010204/dotnet-sdk-3.0.100-preview-010204-osx-x64.pkg.sha => C:\scratch\core-sdk-drop\shipping\assets\Sdk/3.0.100-preview-010204/dotnet-sdk-3.0.100-preview-010204-osx-x64.pkg.sha...Done
  Downloading asset Sdk/3.0.100-preview-010204/dotnet-sdk-3.0.100-preview-010204-win-x64.zip.sha
  https://dotnetclichecksums.blob.core.windows.net/dotnet/Sdk/3.0.100-preview-010204/dotnet-sdk-3.0.100-preview-010204-win-x64.zip.sha => C:\scratch\core-sdk-drop\shipping\assets\Sdk/3.0.100-preview-010204/dotnet-sdk-3.0.100-preview-010204-win-x64.zip.sha...Done
  Downloading asset Sdk/3.0.100-preview-010204/dotnet-sdk-3.0.100-preview-010204-win-x64.wixpdb.sha
  https://dotnetclichecksums.blob.core.windows.net/dotnet/Sdk/3.0.100-preview-010204/dotnet-sdk-3.0.100-preview-010204-win-x64.wixpdb.sha => C:\scratch\core-sdk-drop\shipping\assets\Sdk/3.0.100-preview-010204/dotnet-sdk-3.0.100-preview-010204-win-x64.wixpdb.sha...Done

...

Full drop:

PS C:\enlistments\core-sdk> darc gather-drop --output-dir C:\scratch\core-sdk-drop
                            --commit 465a336c7a5ca3af2f6cf5172ddc0ebde620803b
                            --repo https://github.com/dotnet/core-sdk --full

Determining what builds to download...
Looking up builds of https://github.com/dotnet/core-sdk@465a336c7a5ca3af2f6cf5172ddc0ebde620803b
Root build - Build number 20190201.2 of https://github.com/dotnet/core-sdk @ 465a336c7a5ca3af2f6cf5172ddc0ebde620803b
Getting dependencies of root build...
Filtering toolset dependencies from the graph...
Building graph of all dependencies under root build...
There are 164 unique dependencies in the graph.
Finding builds for all dependencies...
Finding build for Microsoft.WindowsDesktop.App@3.0.0-preview-27331-15...
Looking up Microsoft.WindowsDesktop.App@3.0.0-preview-27331-15 in Build Asset Registry...
Looking up build 2123 in Build Asset Registry...
Finding build for Microsoft.NETCore.App@3.0.0-preview-27331-3...
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Finding build for Microsoft.AspNetCore.Mvc.Razor.Extensions@3.0.0-preview-19074-06...
Finding build for Microsoft.CodeAnalysis.Razor@3.0.0-preview-19074-06...
Finding build for Microsoft.NET.Sdk.Razor@3.0.0-preview-19074-06...
Finding build for dotnet-ef@3.0.0-preview.19074.3...
Looking up dotnet-ef@3.0.0-preview.19074.3 in Build Asset Registry...
Looking up build 1880 in Build Asset Registry...
Finding build for Microsoft.EntityFrameworkCore.InMemory@3.0.0-preview.19074.3...
Finding build for Microsoft.EntityFrameworkCore.Relational@3.0.0-preview.19074.3...
Finding build for Microsoft.EntityFrameworkCore.Sqlite@3.0.0-preview.19074.3...

...

Finding build for Microsoft.NETCore.Runtime.CoreCLR@3.0.0-preview-27331-71...
Looking up Microsoft.NETCore.Runtime.CoreCLR@3.0.0-preview-27331-71 in Build Asset Registry...
Looking up build 2103 in Build Asset Registry...
Finding build for Microsoft.NETCore.DotNetHost@3.0.0-preview-27331-2...
Looking up Microsoft.NETCore.DotNetHost@3.0.0-preview-27331-2 in Build Asset Registry...
Looking up build 2116 in Build Asset Registry...
Finding build for Microsoft.NETCore.DotNetHostPolicy@3.0.0-preview-27331-2...
Finding build for Microsoft.NETCore.App@3.0.0-preview-27331-2...
Finding build for Microsoft.Win32.Registry@4.6.0-preview.19079.11...
Looking up Microsoft.Win32.Registry@4.6.0-preview.19079.11 in Build Asset Registry...
Looking up build 2032 in Build Asset Registry...
Finding build for System.Configuration.ConfigurationManager@4.6.0-preview.19079.11...
Finding build for System.Drawing.Common@4.6.0-preview.19079.11...
Finding build for Microsoft.Win32.SystemEvents@4.6.0-preview.19079.11...
Finding build for System.Security.Cryptography.Cng@4.6.0-preview.19079.11...
Finding build for System.CodeDom@4.6.0-preview.19079.11...
Finding build for System.Security.Permissions@4.6.0-preview.19079.11...
Finding build for System.Windows.Extensions@4.6.0-preview.19079.11...
Full set of builds in graph:
  Build - 20190201.2 of https://github.com/dotnet/core-sdk @ 465a336c7a5ca3af2f6cf5172ddc0ebde620803b
  Build - 20190131.15 of https://devdiv.visualstudio.com/DevDiv/_git/DotNet-Trusted @ adcdf504ddb283fa0160d4f3291cc372fbce496e
  Build - 20190131.3 of https://github.com/dotnet/core-setup @ 75ccdb6828e3706930ad49f061230e9e0fd24d18
  Build - 3.0.0-preview-19080-0484 of https://github.com/aspnet/AspNetCore @ 7d21ee1a5a5f4caf64900e601b011be264964bbb
  Build - 20190131.2 of https://github.com/aspnet/EntityFrameworkCore @ 5fecaf002ee8fe67aa10be7efd0b2a080ec66a2a
  Build - 20190116.2 of https://github.com/dotnet/templating @ ac8f12b90238542dfd2ea596178ae24ea20a0f55
  Build - 20190130.2 of https://github.com/dotnet/toolset @ 536d6a237f4de7b248e75b63256b75c1798e1bd7
  Build - 20190125.1 of https://github.com/dotnet/cli @ 511071e1e199c8ccd8fad072cc31327db0737577
  Build - 20190125.2 of https://github.com/dotnet/sdk @ 010b0fb362878d3eb8dfff7f521fc0db6b7e3a50
  Build - 20190129.3 of https://github.com/Microsoft/msbuild @ a1e757f759060f131c2145f8898ce6a1bcbdd454
  Build - 20190117.14 of https://github.com/dotnet/roslyn @ 359844cc9c32a5b4c1ba72a6e73a32989bd5daeb
  Build - 20190129.2 of https://github.com/aspnet/AspNetCore-Tooling @ 99938c9b7e62896060b7d6f8a225cceb28da2c8d
  Build - 20190129.5 of https://devdiv.visualstudio.com/DevDiv/_git/DotNet-Trusted @ 0a15bac8cd4f0646642dcd40ddebd0513a2de5d3
  Build - 20190114.1 of https://github.com/aspnet/websdk @ c92b1354da7d7290ec63984cf445a4d2cc9667e8
  Build - 20190124.2 of https://github.com/dotnet/winforms @ 63c7e76b747e67819a00b153b2d9dea6d9045d7b
  Build - 20190114.4 of https://github.com/dotnet/wpf @ dbd3bd96849f6bca8c0ca0275de36895bd77a835
  Build - 20190123.11 of https://github.com/dotnet/corefx @ 351ca391579740ae8af8a5405cffa16d152ad6b2
  Build - 20190122.72 of https://github.com/dotnet/coreclr @ b9e88989458e24fa9764e045917b141e3338eae7
  Build - 20190124.5 of https://github.com/dotnet/core-setup @ 63a01b08e5d1d1a6b8544f598b3d3bda76e6e424
  Build - 20190128.02 of https://github.com/aspnet/Extensions @ a58a80bdf5ad971167f73e501661131c3e34a901
  Build - 20190124.1 of https://github.com/dotnet/cliCommandLineParser @ d8f545b1995fb62fd5c64f794491afbfcf6a84ca
  Build - 20190130.5 of https://github.com/dotnet/corefx @ 9e074e4a3f3626fa953f36ab79e3cd3e6db1c9de
  Build - 20190129.8 of https://github.com/aspnet/Extensions @ f41cfded3c12eec0efea89ece1dafe43afa9c6b8
  Build - 20190130.4 of https://github.com/dotnet/core-setup @ 373df9c049aaa6daa967f0bea3bac44c065051f0
  Build - 20190124.6 of https://github.com/aspnet/AspNetCore-Tooling @ bd7fc9ddf67dec0d582168bcd3d1d4681747f81a
  Build - 20190124.3 of https://github.com/aspnet/EntityFrameworkCore @ 3d1e08eb08789a9dde3ac20851d3c82fdf9272e5
  Build - 20190124.02 of https://github.com/aspnet/Extensions @ 0de62ae930da31048ba7e54c8cd0c6c0bcbd9095
  Build - 20190130.4 of https://github.com/dotnet/winforms @ f3aaf4d671390a7b81f0bec15a2cd2b3c94b11cd
  Build - 20190131.1 of https://github.com/dotnet/corefx @ 4e7ce8acfae39beab8c30053d3da95417b5a16dc
  Build - 20190131.71 of https://github.com/dotnet/coreclr @ 10ba67ac50a2152464981db11f2a893b87f8deee
  Build - 20190131.2 of https://github.com/dotnet/core-setup @ 75ccdb6828e3706930ad49f061230e9e0fd24d18
  Build - 20190129.11 of https://github.com/dotnet/corefx @ 673fe7880790e79549266cea25a385af82917b6e

Gathering drop for build 20190201.2 of https://github.com/dotnet/core-sdk
...

See also:

• get-dependency-graph

get-asset

Get information about an asset. Given an asset name and optional version, channel, and maximum age, find out general information about the asset.

Parameters

• '--name` - (Required). Name of asset to look up. This is typically a package name.
• '--version` - Look up specific version of an asset.
• '--channel` - Look up the asset produced from builds applied to this channel.
• '--max-age` - (Default: 30) Show builds with a max age of this many days.

Sample:

PS D:\enlistments\websdk> darc get-asset --name 'Microsoft.Extensions.Logging.Abstractions' --channel "3 Rel" --max-age 1
Looking up assets with name 'Microsoft.Extensions.Logging.Abstractions' on channel '.NET Core 3 Release' in the last 1 days
Microsoft.Extensions.Logging.Abstractions @ 3.0.0-preview6.19304.6
Repository:    https://github.com/aspnet/Extensions
Branch:        refs/heads/release/3.0-preview6
Commit:        54d51a340698b6883dd3e47be372c07e0acf75bc
Build Number:  20190604.6
Date Produced: 6/4/2019 12:31 PM
Build Link:    https://dev.azure.com/dnceng/internal/_build/results?buildId=211715
BAR Build Id:  13260
Channels:
- .NET Core 3 Release

See also:

None.

get-build

Retrieves a specific build of a repository. Find the BAR build ID of a new build in the logs of the "Publish Build Assets" step of the "Publish to Build Asset Registry" leg of an official build.

Parameters

• '--id` - (Required). Build id.

Sample:

# Looking at logs of the "Publish Build Assets" step of the
# "Publish to Build Asset Registry" leg of a recent build:

D:\a\1\s\.dotnet\sdk\3.0.100-preview4-011223\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.RuntimeIdentifierInference.targets(151,5): message NETSDK1057: You are using a preview version of .NET Core. See: https://aka.ms/dotnet-core-preview [D:\a\1\s\.packages\microsoft.dotnet.arcade.sdk\1.0.0-beta.19263.3\tools\SdkTasks\PublishBuildAssets.proj]
  Starting build metadata push to the Build Asset Registry...
  Getting a collection of dependencies from 'eng/Version.Details.xml' in repo 'D:\a\1\s\'...
  Reading 'eng/Version.Details.xml' in repo 'D:\a\1\s\' and branch ''...
  Reading 'eng/Version.Details.xml' from repo 'D:\a\1\s\' and branch '' succeeded!
  Calculated Dependencies:
      13325, IsProduct: True
      13337, IsProduct: True
      13225, IsProduct: True
      13379, IsProduct: True
      13298, IsProduct: True
      13331, IsProduct: True
      13167, IsProduct: True
      13184, IsProduct: True
      11261, IsProduct: False
  Metadata has been pushed. Build id in the Build Asset Registry is '13386'

Build succeeded.
    0 Warning(s)
    0 Error(s)

PS D:\enlistments\websdk> darc get-build --id 13386
Repository:    https://github.com/dotnet/core-sdk
Branch:        refs/heads/master
Commit:        7996f7e53ffdf42feec5f1344df29ba53fcdf9ed
Build Number:  20190605.3
Date Produced: 6/5/2019 7:12 AM
Build Link:    https://dev.azure.com/dnceng/internal/_build/results?buildId=212972
BAR Build Id:  13386
Channels:
- .NET 5 Dev

See also:

• get-asset

get-channels

Retrieves a list of channels. Channels are something like a virtual cross repository branch. They are a tag that is applied to a build which indicates the purpose of the outputs of that build. Channels are used as sources in a subscription, indicating that the repository wants dependency updates from builds meant for the purpose associated with the channel.

For instance, there is a channel called .NET 5 Dev. Builds that appear on this channel are intended for day to day .NET 5 development. Repositories may have dependencies on other .NET Core repositories when building their own part of the .NET 5 stack. By subscribing to that repository's .NET 5 Dev channel, they map .NET 5 daily development outputs onto their own target branch.

Parameters

None.

Sample:

PS D:\enlistments\arcade> darc get-channels

.NET Tools - Latest
.NET Engineering Services - Int
.NET Engineering Services - Prod
.NET Tools - Validation
.NET Core 3 Release
.NET Core 3.1 Dev
.NET Core 3.1 Release
.NET 5 Dev
.NET Core 3.0 Internal Servicing
.NET 3 Tools
.NET 3 Tools - Validation

See also:

• add-channel

get-default-channels

Retrieves a list of default channel mappings. A default channel maps each new build of a specific branch of a repository onto a specific channel. While builds can be selectively and manually applied to channels, this is generally inconvenient for day to day development in most cases. In general, until release shutdown, each build of a branch should always be applied to its "normal" channel. The internal ID of the default channel association is also presented for convenience with other operations like default-channel-status.

Parameters

• --source-repo - Filter by a specific source repository. Matches on substring.
• --branch - Filter by a branch. Matches on substring.
• --channel - Filter by a channel name. Matches on substring.

Sample

PS D:\enlistments\websdk> darc get-default-channels --channel ".NET Core 3 release"
(201)  https://dev.azure.com/dnceng/internal/_git/dotnet-optimization @ refs/heads/release/3.0 -> .NET Core 3 Release
(140)  https://dev.azure.com/dnceng/internal/_git/dotnet-wpf-int @ refs/heads/release/3.0 -> .NET Core 3 Release
(242)  https://github.com/aspnet/AspNetCore @ refs/heads/release/3.0-preview6 -> .NET Core 3 Release
(251)  https://github.com/aspnet/AspNetCore-Tooling @ refs/heads/release/3.0-preview6 -> .NET Core 3 Release
(248)  https://github.com/aspnet/Blazor @ refs/heads/release/0.10.0-preview6 -> .NET Core 3 Release
(250)  https://github.com/aspnet/EntityFramework6 @ refs/heads/release/6.3-preview6 -> .NET Core 3 Release
(249)  https://github.com/aspnet/EntityFrameworkCore @ refs/heads/release/3.0-preview6 -> .NET Core 3 Release
(252)  https://github.com/aspnet/Extensions @ refs/heads/release/3.0-preview6 -> .NET Core 3 Release
(89)   https://github.com/aspnet/websdk @ refs/heads/release/3.0.1xx -> .NET Core 3 Release
(78)   https://github.com/dotnet/cli @ refs/heads/release/3.0.1xx -> .NET Core 3 Release
(80)   https://github.com/dotnet/CliCommandLineParser @ refs/heads/master -> .NET Core 3 Release
(170)  https://github.com/dotnet/coreclr @ refs/heads/release/3.0 -> .NET Core 3 Release
(193)  https://github.com/dotnet/corefx @ refs/heads/release/3.0 -> .NET Core 3 Release
(77)   https://github.com/dotnet/core-sdk @ refs/heads/release/3.0.1xx -> .NET Core 3 Release
(192)  https://github.com/dotnet/core-setup @ refs/heads/release/3.0 -> .NET Core 3 Release
(247)  https://github.com/dotnet/roslyn @ refs/heads/release/dev16.1-vs-deps -> .NET Core 3 Release
(81)   https://github.com/dotnet/sdk @ refs/heads/release/3.0.1xx -> .NET Core 3 Release
(186)  https://github.com/dotnet/standard @ refs/heads/release/3.0 -> .NET Core 3 Release
(83)   https://github.com/dotnet/symreader @ refs/heads/master -> .NET Core 3 Release
(84)   https://github.com/dotnet/symreader-portable @ refs/heads/master -> .NET Core 3 Release
(90)   https://github.com/dotnet/templating @ refs/heads/release/3.0 -> .NET Core 3 Release
(92)   https://github.com/dotnet/toolset @ refs/heads/release/3.0.1xx -> .NET Core 3 Release
(194)  https://github.com/dotnet/winforms @ refs/heads/release/3.0 -> .NET Core 3 Release
(243)  https://github.com/dotnet/wpf @ refs/heads/release/3.0 -> .NET Core 3 Release
(88)   https://github.com/Microsoft/msbuild @ refs/heads/vs16.0 -> .NET Core 3 Release

See also:

• add-default-channel
• delete-default-channel
• default-channel-status
• get-channels

get-dependencies

Retrieves the dependencies listed in the local repo. This command reads the Version.Details.xml file from the local repository and prints out the relevant information. By default, the command lists all dependencies.

For information on toolset vs. product dependencies, see Toolset vs. Product Dependencies

Parameters

• n, --name - Name of dependency to query for.

Sample

PS C:\enlistments\arcade-services> darc get-dependencies

Name:    Microsoft.DotNet.Arcade.Sdk
Version: 1.0.0-beta.19081.3
Repo:    https://github.com/dotnet/arcade
Commit:  1e859f1c17fffbe9c4fb6bbfc0fc71cd0c56563b
Type:    Toolset

Name:    Microsoft.DotNet.SignTool
Version: 1.0.0-beta.19081.3
Repo:    https://github.com/dotnet/arcade
Commit:  1e859f1c17fffbe9c4fb6bbfc0fc71cd0c56563b
Type:    Toolset

Name:    Microsoft.DotNet.Build.Tasks.Feed
Version: 2.2.0-beta.19081.3
Repo:    https://github.com/dotnet/arcade
Commit:  1e859f1c17fffbe9c4fb6bbfc0fc71cd0c56563b
Type:    Toolset

Name:    Microsoft.DotNet.Maestro.Tasks
Version: 1.0.0-beta.19060.8
Repo:    https://github.com/dotnet/arcade
Commit:  67384d20d310611afc1c2b4dd3b953fda182def4
Type:    Toolset

See Also

• get-dependency-graph

get-dependency-graph

Given a starting repository and sha, builds the full repository dependency graph.

The dependency graph is defined by the dependencies in Version.Details.xml. Each dependency listed contains information on the source of the dependency, specifically which repository and sha it was generated from. Visiting that repository at the specified sha will yield another set of dependencies. Transitively visiting these repository+sha combinations will build up a repository graph. The graph may have cycles, and the transitive walk is stopped at those nodes. It may also be stopped at any toolset dependency unless those are specifically included with --include-toolset.

The graph output comes in 3 forms:

• (Default) A full textual graph representation indicating all involved repositories, their input dependencies, and the repositories that created those input dependencies.
• A 'flat' graph where only unique repository+sha combinations are shown. The individual package dependencies are ignored.
• A graph-viz text format that can be used to generate a visual presentation of the graph.

In flat and full modes, after printing the graph, a set of "incoherencies" and the paths to those incoherences are displayed. Incoherencies are cases where either:

• The same repository exists in the graph at two different shas

• The same input dependency exists in the graph at two different versions. While generally this also leads to the same repository existing multiple times in the graph at different shas, it's also possible for the same sha to be built more than once, producing different package versions.

  While by default, this command uses remote resources to generate the graph, it's possible to generate if you have all potential input repositories available in a folder with all the necessary shas downloaded. In this mode, starting from the root repository, darc will scan the folder for git repos that contain the input shas to that repository. It will then build up the dependency graph based on that information.

  By default, if no parameters are passed, the head sha of the current repository is used as the starting point.

Parameters'

• -l, --local - Get the graph using only local information. Requires that repos-folder be passed.
• --repo - If set, gather dependency information from the remote repository. Requires --version.
• -v, --version - Branch, commit or tag to look up if looking up version information remotely.
• --asset-name - Get the graph based on a single asset and not the whole Version.Details.xml contents.
• --repos-folder - Full path to folder where all the repos are locally stored. i.e. C:\repos
• --remotes-map - ';' separated key value pair defining the remote to local path mapping.
• -f, --flat - Returns a unique set of repository+sha combination.
• --graphviz - Writes the repository graph in GraphViz (dot) form, into the specified file.
• --output-file - Writes the non-GraphViz (dot) output to the specified file into the specified file.
• --include-toolset - Include toolset dependencies.
• --skip-builds - Do not look up build information.
• --delta-from - (Default: newest-in-graph) Determine the delta of each node in the graph from a target. Valid values: [none, newest-in-channel, newest-in-graph]
• --coherency - Report coherency information.

Sample

Full mode:

PS C:\enlistments\core-setup> darc get-dependency-graph
Getting root dependencies from local repository...
Building repository dependency graph...
Removing toolset dependencies...
Repositories:
  - Repo:    C:/enlistments/core-setup/.git
    Commit:  b50554ac9a96fedc8580fa6090b6e9e75a23193b
    Dependencies:
    - Name:    Microsoft.Private.CoreFx.NETCoreApp
      Version: 4.6.0-preview.19073.11
    - Name:    Microsoft.NETCore.Platforms
      Version: 3.0.0-preview.19073.11
    - Name:    Microsoft.NETCore.Runtime.CoreCLR
      Version: 3.0.0-preview-27322-72
    Input Repositories:
    - Repo:    https://github.com/dotnet/corefx
      Commit:  351ca391579740ae8af8a5405cffa16d152ad6b2
    - Repo:    https://github.com/dotnet/coreclr
      Commit:  b9e88989458e24fa9764e045917b141e3338eae7

Flat mode:

PS C:\enlistments\core-setup> darc get-dependency-graph --flat
Getting root dependencies from local repository...
Building repository dependency graph...
Removing toolset dependencies...
Repositories:
  - Repo:     C:/enlistments/core-setup/.git
    Commit:   b50554ac9a96fedc8580fa6090b6e9e75a23193b
  - Repo:     https://github.com/dotnet/corefx
    Commit:   351ca391579740ae8af8a5405cffa16d152ad6b2
  - Repo:     https://github.com/dotnet/coreclr
    Commit:   b9e88989458e24fa9764e045917b141e3338eae7

See Also

• gather-drop
• get-flow-graph

get-flow-graph

Get dependency flow graph in graphviz form. This graph represents inter-repository flow vs. get-dependency-graph which represents current repository inter-dependencies. This visualization can be useful to understand the flow of changes in between repositories. Pictorial graphs can be generated using dot.exe or other GraphViz tools.

Parameters

• --graphviz - Writes the flow graph in GraphViz (dot) form, into the specified file.
• --include-disabled-subscriptions - Include edges that have disabled subscriptions
• --frequencies - (Default: everyWeek twiceDaily everyDay everyBuild none) Include only subscriptions with the specific update frequencies in the graph.
• --channel - Only include nodes/edges with flow on this channel.

Sample

PS D:\enlistments\websdk> darc get-flow-graph --channel "3 Rel"
digraph repositoryGraph {
    node [shape=record]
    arcademaster[label="arcade\nmaster"];
    CliCommandLineParsermaster[label="CliCommandLineParser\nmaster"];
    symreadermaster[label="symreader\nmaster"];
    symreaderportablemaster[label="symreader-portable\nmaster"];
    coresdkrelease301xx[label="core-sdk\nrelease/3.0.1xx"];
    clirelease301xx[label="cli\nrelease/3.0.1xx"];
    sdkrelease301xx[label="sdk\nrelease/3.0.1xx"];
    msbuildvs160[label="msbuild\nvs16.0"];
    websdkrelease301xx[label="websdk\nrelease/3.0.1xx"];
    templatingrelease30[label="templating\nrelease/3.0"];
    toolsetrelease301xx[label="toolset\nrelease/3.0.1xx"];
    dotnetwpfintrelease30[label="dotnet-wpf-int\nrelease/3.0"];
    coreclrrelease30[label="coreclr\nrelease/3.0"];
    standardrelease30[label="standard\nrelease/3.0"];
    coresetuprelease30[label="core-setup\nrelease/3.0"];
    corefxrelease30[label="corefx\nrelease/3.0"];
    winformsrelease30[label="winforms\nrelease/3.0"];
    dotnetoptimizationrelease30[label="dotnet-optimization\nrelease/3.0"];
    AspNetCorerelease30preview6[label="AspNetCore\nrelease/3.0-preview6"];
    wpfrelease30[label="wpf\nrelease/3.0"];
    roslynreleasedev161vsdeps[label="roslyn\nrelease/dev16.1-vs-deps"];
    Blazorrelease0100preview6[label="Blazor\nrelease/0.10.0-preview6"];
    EntityFrameworkCorerelease30preview6[label="EntityFrameworkCore\nrelease/3.0-preview6"];
    EntityFramework6release63preview6[label="EntityFramework6\nrelease/6.3-preview6"];
    AspNetCoreToolingrelease30preview6[label="AspNetCore-Tooling\nrelease/3.0-preview6"];
    Extensionsrelease30preview6[label="Extensions\nrelease/3.0-preview6"];
    arcademaster -> arcademaster [style=dashed]
    arcademaster -> sdkrelease301xx [style=dotted]
    arcademaster -> toolsetrelease301xx [style=dotted]
    arcademaster -> websdkrelease301xx [style=dotted]
    arcademaster -> clirelease301xx [style=dotted]
    arcademaster -> winformsrelease30 [style=dotted]
    arcademaster -> wpfrelease30 [style=dotted]
    arcademaster -> coreclrrelease30 [style=dotted]
    arcademaster -> coresdkrelease301xx [style=dotted]
    arcademaster -> templatingrelease30 [style=dotted]
    arcademaster -> msbuildvs160 [style=dotted]
    arcademaster -> corefxrelease30 [style=dotted]
    arcademaster -> coresetuprelease30 [style=dotted]
    arcademaster -> standardrelease30 [style=dotted]
    arcademaster -> dotnetwpfintrelease30 [style=dotted]
    arcademaster -> Blazorrelease0100preview6 [style=dotted]
    arcademaster -> EntityFrameworkCorerelease30preview6 [style=dotted]
    arcademaster -> AspNetCorerelease30preview6 [style=dotted]
    arcademaster -> AspNetCoreToolingrelease30preview6 [style=dotted]
    arcademaster -> dotnetoptimizationrelease30 [style=dotted]
    arcademaster -> Extensionsrelease30preview6 [style=dotted]
    arcademaster -> EntityFramework6release63preview6 [style=dotted]
    subgraph cluster_NETCore3Release {
        label = ".NET Core 3 Release"
        CliCommandLineParsermaster
        symreadermaster
        symreaderportablemaster
        coresdkrelease301xx
        clirelease301xx
        sdkrelease301xx
        msbuildvs160
        websdkrelease301xx
        templatingrelease30
        toolsetrelease301xx
        dotnetwpfintrelease30
        coreclrrelease30
        standardrelease30
        coresetuprelease30
        corefxrelease30
        winformsrelease30
        dotnetoptimizationrelease30
        AspNetCorerelease30preview6
        wpfrelease30
        roslynreleasedev161vsdeps
        Blazorrelease0100preview6
        EntityFrameworkCorerelease30preview6
        EntityFramework6release63preview6
        AspNetCoreToolingrelease30preview6
        Extensionsrelease30preview6
    clirelease301xx -> toolsetrelease301xx [style=bold]
    roslynreleasedev161vsdeps -> toolsetrelease301xx [style=bold]
    sdkrelease301xx -> toolsetrelease301xx [style=bold]
    toolsetrelease301xx -> coresdkrelease301xx [style=bold]
    websdkrelease301xx -> toolsetrelease301xx [style=bold]
    CliCommandLineParsermaster -> clirelease301xx [style=bold]
    coreclrrelease30 -> corefxrelease30 [style=bold]
    coresetuprelease30 -> coresdkrelease301xx [style=bold]
    templatingrelease30 -> coresdkrelease301xx [style=bold]
    AspNetCoreToolingrelease30preview6 -> toolsetrelease301xx [style=bold]
    AspNetCorerelease30preview6 -> coresdkrelease301xx [style=bold]
    corefxrelease30 -> coresetuprelease30 [style=bold]
    sdkrelease301xx -> clirelease301xx [style=bold]
    coreclrrelease30 -> coresetuprelease30 [style=bold]
    msbuildvs160 -> toolsetrelease301xx [style=bold]
    corefxrelease30 -> coreclrrelease30 [style=dotted]
    coresetuprelease30 -> corefxrelease30 [style=dotted]
    standardrelease30 -> coresetuprelease30 [style=bold]
    templatingrelease30 -> clirelease301xx [style=bold]
    wpfrelease30 -> dotnetwpfintrelease30 [style=bold]
    clirelease301xx -> coresdkrelease301xx [style=bold]
    winformsrelease30 -> wpfrelease30 [style=bold]
    AspNetCorerelease30preview6 -> websdkrelease301xx [style=bold]
    dotnetoptimizationrelease30 -> coreclrrelease30 [style=dotted]
    dotnetoptimizationrelease30 -> corefxrelease30 [style=dotted]
    coresetuprelease30 -> wpfrelease30 [style=dotted]
    coresetuprelease30 -> coreclrrelease30 [style=dotted]
    sdkrelease301xx -> coresdkrelease301xx [style=bold]
    corefxrelease30 -> standardrelease30 [style=dotted]
    coresetuprelease30 -> dotnetwpfintrelease30 [style=dotted]
    coresetuprelease30 -> winformsrelease30 [style=dotted]
    standardrelease30 -> corefxrelease30 [style=bold]
    EntityFrameworkCorerelease30preview6 -> AspNetCorerelease30preview6 [style=bold]
    coresetuprelease30 -> EntityFramework6release63preview6 [style=bold]
    coresetuprelease30 -> toolsetrelease301xx [style=bold]
    dotnetwpfintrelease30 -> coresetuprelease30 [style=bold]
    AspNetCoreToolingrelease30preview6 -> AspNetCorerelease30preview6 [style=bold]
    Blazorrelease0100preview6 -> AspNetCorerelease30preview6 [style=bold]
    dotnetwpfintrelease30 -> wpfrelease30 [style=dotted]
    Extensionsrelease30preview6 -> EntityFrameworkCorerelease30preview6 [style=bold]
    Extensionsrelease30preview6 -> AspNetCoreToolingrelease30preview6 [style=bold]
    coresetuprelease30 -> Extensionsrelease30preview6 [style=bold]

    }
    subgraph cluster1 {
        rankdir=RL;
        label = "Legend"
        shape = rectangle;
        color = black;
        a[style = invis];
        b[style = invis];
        c[style = invis];
        d[style = invis];
        e[style = invis];
        f[style = invis];
        c->d[label = "Updated Every Build", style = bold];
        a->b[label = "Updated Every Day", style = dashed];
        e->f[label = "Disabled/Updated On-demand", style = dotted];
    }
}

See Also

• get-subscriptions
• trigger-subscriptions
• get-dependency-graph

get-health

Evaluate the dependency flow-related health of the .NET Core repositories, channels, etc. get-health evaluates a number of metrics (e.g. cycles in dependency flow). Each metric either passes, fails, or generates warnings.

Parameters

• --repo - Narrow health checkups by this repository.
• --channel - Narrow health checkups by this channel.

Sample

PS D:\enlistments\arcade-services> darc get-health --channel ".NET Core 3 Release"
Evaluating the following channels:
  .NET Core 3 Release
Evaluating the following repositories:
  https://github.com/dotnet/sdk
  https://github.com/dotnet/cli
  https://github.com/dotnet/standard
  https://github.com/dotnet/arcade
  https://github.com/dotnet/winforms
  https://github.com/dotnet/wpf
  https://github.com/Microsoft/msbuild
  https://github.com/Microsoft/vstest
  https://github.com/dotnet/CliCommandLineParser
  https://github.com/dotnet/symreader
  https://github.com/dotnet/symreader-portable
  https://github.com/aspnet/websdk
  https://github.com/dotnet/toolset
  https://github.com/dotnet/test-templates
  https://github.com/aspnet/AspNetCore-Tooling
  https://github.com/aspnet/AspNetCore
  https://github.com/aspnet/EntityFrameworkCore
  https://github.com/dotnet/coreclr
  https://github.com/dotnet/core-setup
  https://github.com/dotnet/core-sdk
  https://github.com/aspnet/Extensions
  https://github.com/dotnet/roslyn
  https://github.com/dotnet/templating
  https://github.com/dotnet/corefx
  https://github.com/dotnet/format
  https://github.com/dotnet/roslyn-sdk
  https://github.com/Microsoft/visualfsharp
  https://github.com/dotnet/arcade-validation
  https://dev.azure.com/dnceng/internal/_git/dotnet-wpf-int
  https://github.com/aspnet/EntityFramework6
  https://github.com/dotnet/source-build-reference-packages
  https://github.com/mono/linker
  https://github.com/dotnet/iot
  https://dev.azure.com/dnceng/internal/_git/dotnet-optimization
  https://github.com/mono/mono
  https://github.com/aspnet/Blazor

warn: Microsoft.DotNet.Darc.Operations.Operation[0]
      https://github.com/nuget/nuget.client@27af96bdb7ba8d6d7ea9ad53fc76cd1d1aa80703 does not have an eng/Version.Details.xml.
warn: Microsoft.DotNet.Darc.Operations.Operation[0]
      https://github.com/microsoft/vstest@
       does not have an eng/Version.Details.xml.
warn: Microsoft.DotNet.Darc.Operations.Operation[0]
      https://github.com/nuget/nuget.client@27af96bdb7ba8d6d7ea9ad53fc76cd1d1aa80703 does not have an eng/Version.Details.xml.
warn: Microsoft.DotNet.Darc.Operations.Operation[0]
      https://github.com/microsoft/vstest@
       does not have an eng/Version.Details.xml.
Subscription health for https://github.com/dotnet/toolset @ release/3.0.1xx - (Failed)

  Dependencies missing subscriptions:
    NuGet.Build.Tasks
    Microsoft.NET.Test.Sdk
    ILLink.Tasks
  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk
  Subscriptions that do not have any effect:
    https://github.com/nuget/nuget.client (.NET Core 3 Release) ==> 'https://github.com/dotnet/toolset' ('release/3.0.1xx') (1ffcc88a-b02a-4b5a-2812-08d690bc5860)
    https://github.com/microsoft/vstest (.NET Core 3 Release) ==> 'https://github.com/dotnet/toolset' ('release/3.0.1xx') (4be36948-e631-40b6-b4ea-08d6910bdae0)
    https://github.com/mono/linker (.NET Core 3 Release) ==> 'https://github.com/dotnet/toolset' ('release/3.0.1xx') (3013901c-3f64-4351-50e3-08d6c516cc75)

Subscription health for https://github.com/dotnet/core-sdk @ release/3.0.1xx - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk
  Subscriptions that do not have any effect:
    https://github.com/dotnet/test-templates (.NET Core 3 Release) ==> 'https://github.com/dotnet/core-sdk' ('release/3.0.1xx') (2fb6d4f8-61cf-4278-94da-08d690bc143a)

Subscription health for https://github.com/dotnet/cli @ release/3.0.1xx - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk

Subscription health for https://github.com/dotnet/corefx @ release/3.0 - (Failed)

  Dependencies missing subscriptions:
    Microsoft.NETCore.Platforms
    runtime.native.System.IO.Ports
    optimization.windows_nt-x64.IBC.CoreFx
  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.NETCore.App
    Microsoft.NETCore.DotNetHost
    Microsoft.NETCore.DotNetHostPolicy
    Microsoft.DotNet.Arcade.Sdk
    Microsoft.DotNet.Helix.Sdk
    Microsoft.DotNet.ApiCompat
    Microsoft.DotNet.GenAPI
    Microsoft.DotNet.GenFacades
    Microsoft.DotNet.XUnitExtensions
    Microsoft.DotNet.XUnitConsoleRunner
    Microsoft.DotNet.Build.Tasks.Packaging
    Microsoft.DotNet.CodeAnalysis
    Microsoft.DotNet.RemoteExecutor
    Microsoft.DotNet.Build.Tasks.Configuration
    Microsoft.DotNet.Build.Tasks.Feed
    Microsoft.DotNet.VersionTools.Tasks
  Subscriptions that do not have any effect:
    https://dev.azure.com/dnceng/internal/_git/dotnet-optimization (.NET Core 3 Release) ==> 'https://github.com/dotnet/corefx' ('release/3.0') (fc000152-53a0-4a98-0b3e-08d6bc6f2d11)

Subscription health for https://github.com/dotnet/core-setup @ release/3.0 - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk

Subscription health for https://github.com/dotnet/coreclr @ release/3.0 - (Failed)

  Dependencies missing subscriptions:
    optimization.IBC.CoreCLR
    optimization.PGO.CoreCLR
  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk
    Microsoft.DotNet.Helix.Sdk
    Microsoft.DotNet.Build.Tasks.Feed
    Microsoft.DotNet.Build.Tasks.Packaging
    Microsoft.Private.CoreFx.NETCoreApp
    Microsoft.NETCore.Platforms
    Microsoft.Bcl.AsyncInterfaces
    Microsoft.NETCore.App
  Subscriptions that do not have any effect:
    https://dev.azure.com/dnceng/internal/_git/dotnet-optimization (.NET Core 3 Release) ==> 'https://github.com/dotnet/coreclr' ('release/3.0') (2b95475b-d147-4b39-6306-08d6bc51899c)

Subscription health for https://dev.azure.com/dnceng/internal/_git/dotnet-wpf-int @ release/3.0 - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk
    Microsoft.NETCore.App

Subscription health for https://github.com/dotnet/wpf @ release/3.0 - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.NETCore.App
    Microsoft.DotNet.Arcade.Sdk
    Microsoft.DotNet.CodeAnalysis
    Microsoft.DotNet.Wpf.DncEng

Subscription health for https://github.com/aspnet/websdk @ release/3.0.1xx - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk
  Subscriptions that do not have any effect:
    https://github.com/aspnet/xdt (.NET Core 3 Release) ==> 'https://github.com/aspnet/websdk' ('release/3.0.1xx') (28d0cfb5-71e0-4e27-8453-08d6c4e800ae)

Subscription health for https://github.com/dotnet/standard @ release/3.0 - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk
    Microsoft.DotNet.ApiCompat
    Microsoft.DotNet.Build.Tasks.Packaging
    Microsoft.DotNet.CodeAnalysis
    Microsoft.DotNet.GenAPI
    Microsoft.DotNet.GenFacades
    System.Reflection.Emit
    System.Reflection.Emit.ILGeneration
    System.Reflection.Emit.Lightweight

Subscription health for https://github.com/dotnet/winforms @ release/3.0 - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.NETCore.App
    Microsoft.DotNet.Arcade.Sdk
    Microsoft.DotNet.GenFacades
    Microsoft.DotNet.Helix.Sdk
    Microsoft.DotNet.XUnitExtensions

Subscription health for https://github.com/aspnet/AspNetCore @ release/3.0-preview6 - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.GenAPI
    Microsoft.DotNet.Arcade.Sdk
    Microsoft.DotNet.Helix.Sdk

Subscription health for https://github.com/aspnet/EntityFramework6 @ release/6.3-preview6 - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk

Subscription health for https://github.com/aspnet/EntityFrameworkCore @ release/3.0-preview6 - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk

Subscription health for https://github.com/aspnet/AspNetCore-Tooling @ release/3.0-preview6 - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk

Subscription health for https://github.com/aspnet/Extensions @ release/3.0-preview6 - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk
    Microsoft.DotNet.GenAPI
    Microsoft.DotNet.Helix.Sdk

Subscription health for https://github.com/dotnet/CliCommandLineParser @ master - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk

Subscription health for https://github.com/dotnet/sdk @ release/3.0.1xx - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk
    Microsoft.DotNet.SignTool

Subscription health for https://github.com/dotnet/symreader @ master - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk

Subscription health for https://github.com/dotnet/symreader-portable @ master - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk

Subscription health for https://github.com/Microsoft/msbuild @ vs16.0 - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk
    Microsoft.DotNet.SignTool

Subscription health for https://github.com/dotnet/templating @ release/3.0 - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk

Subscription health for https://dev.azure.com/dnceng/internal/_git/dotnet-optimization @ release/3.0 - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk
    Microsoft.DotNet.Build.Tasks.Feed

Subscription health for https://github.com/dotnet/roslyn @ release/dev16.1-vs-deps - (Failed)

  Dependencies missing subscriptions:
    Microsoft.DotNet.Arcade.Sdk

Subscription health for https://github.com/aspnet/Blazor @ release/0.10.0-preview6 - (Warning)

  Dependencies that do not flow automatically (disabled or frequency=none):
    Microsoft.DotNet.Arcade.Sdk

Product dependency cycle health for https://github.com/dotnet/toolset @ release/3.0.1xx - (Passed)
Product dependency cycle health for https://github.com/dotnet/core-sdk @ release/3.0.1xx - (Passed)
Product dependency cycle health for https://github.com/dotnet/cli @ release/3.0.1xx - (Passed)
Product dependency cycle health for https://github.com/dotnet/corefx @ release/3.0 - (Passed)
Product dependency cycle health for https://github.com/dotnet/core-setup @ release/3.0 - (Passed)
Product dependency cycle health for https://github.com/dotnet/coreclr @ release/3.0 - (Passed)
Product dependency cycle health for https://dev.azure.com/dnceng/internal/_git/dotnet-wpf-int @ release/3.0 - (Passed)
Product dependency cycle health for https://github.com/dotnet/wpf @ release/3.0 - (Passed)
Product dependency cycle health for https://github.com/aspnet/websdk @ release/3.0.1xx - (Passed)
Product dependency cycle health for https://github.com/dotnet/standard @ release/3.0 - (Passed)
Product dependency cycle health for https://github.com/dotnet/winforms @ release/3.0 - (Passed)
Product dependency cycle health for https://github.com/aspnet/AspNetCore @ release/3.0-preview6 - (Passed)
Product dependency cycle health for https://github.com/aspnet/EntityFramework6 @ release/6.3-preview6 - (Passed)
Product dependency cycle health for https://github.com/aspnet/EntityFrameworkCore @ release/3.0-preview6 - (Passed)
Product dependency cycle health for https://github.com/aspnet/AspNetCore-Tooling @ release/3.0-preview6 - (Passed)
Product dependency cycle health for https://github.com/aspnet/Extensions @ release/3.0-preview6 - (Passed)
Product dependency cycle health for https://github.com/dotnet/CliCommandLineParser @ master - (Passed)
Product dependency cycle health for https://github.com/dotnet/sdk @ release/3.0.1xx - (Passed)
Product dependency cycle health for https://github.com/dotnet/symreader @ master - (Passed)
Product dependency cycle health for https://github.com/dotnet/symreader-portable @ master - (Passed)
Product dependency cycle health for https://github.com/Microsoft/msbuild @ vs16.0 - (Passed)
Product dependency cycle health for https://github.com/dotnet/templating @ release/3.0 - (Passed)
Product dependency cycle health for https://dev.azure.com/dnceng/internal/_git/dotnet-optimization @ release/3.0 - (Passed)
Product dependency cycle health for https://github.com/dotnet/roslyn @ release/dev16.1-vs-deps - (Passed)
Product dependency cycle health for https://github.com/aspnet/Blazor @ release/0.10.0-preview6 - (Passed)

See Also

None.

get-latest-build

Retrieves the latest builds matching the specified criteria. If more than one build matches then multiple builds are returned. This is useful for a quick check of what the latest build of a repository is, especially if it has not been assigned to a channel.

Parameters

• --repo - (Required). Name of repository to determine the latest build for. Match on substring
• --channel - Name of channel to query for the latest build on. Match on substring

Sample:

PS D:\enlistments\arcade-services> darc get-latest-build --repo core-setup --channel ".NET 5 Dev"
Repository:    https://github.com/dotnet/core-setup
Branch:        refs/heads/master
Commit:        9042fe6c81aa3b47f58ccd94ff02e42f9f7a4e46
Build Number:  20190916.2
Date Produced: 9/16/2019 9:19 AM
Build Link:    https://dev.azure.com/dnceng/internal/_build/results?buildId=356253
BAR Build Id:  28440
Channels:
- .NET 5 Dev

See also:

None.

get-repository-policies

Retrieves information about repository merge policies. Merge policies dictate the checks that must be satisfied for a pull request to be automatically merged. These merge policies come from two sources:

• Non-batchable subscriptions specify their own merge policies.
• Batchable subscriptions share a merge policy per repo+branch combination.

Parameters

• --repo - Name of repository to get repository merge policies for. Match on substring
• --branch - Name of repository to get repository merge policies for. Match on substring
• --all - List all repositories. Otherwise, branches not targeted by a batchable subscription are not listed.

Sample:

S D:\enlistments\websdk> darc get-repository-policies --repo extensions
Filtered 3 policies for branches not targeted by an active batchable subscription. To include, pass --all.

https://github.com/aspnet/Extensions @ master
- Merge Policies:
  Standard
https://github.com/aspnet/Extensions @ release/3.0-preview6
- Merge Policies:
  Standard

See also:

• get-subscriptions
• set-repository-policies
• add-subscription

get-subscriptions

Retrieves information about existing subscriptions. This command is generally useful to determine what kind of dependency flow will happen on new builds, or to obtain the id of a subscription for use in delete-subscriptions.

The top line of the listing shows the subscription mapping and is read:

https://github.com/aspnet/AspNetCore (.NET 5 Dev) ==> 'https://github.com/dotnet/core-sdk' ('master')

Builds of https://github.com/aspnet/AspNetCore that have been applied to channel ".NET 5 Dev" will be applied to the master branch of https://github.com/dotnet/core-sdk.

Parameters

If no parameters are specified, get-subscriptions will show a full list of Maestro++ subscriptions. This list can be filtered by various input parameters to be more useful.

• --target-repo - Filter by target repo (matches substring unless --exact or --regex is passed).
• --source-repo - Filter by source repo (matches substring unless --exact or --regex is passed).
• --channel - Filter by source channel (matches substring unless --exact or --regex is passed).
• --target-branch - Filter by target branch (matches substring unless --exact or --regex is passed).
• --exact - Match subscription parameters exactly (cannot be used with --regex).
• --regex - Match subscription parameters using regex (cannot be used with --exact).

Sample:

PS D:\enlistments\arcade-services> darc get-subscriptions --target-repo core-sdk --source-repo aspnet

https://github.com/aspnet/AspNetCore (.NET 5 Dev) ==> 'https://github.com/dotnet/core-sdk' ('master')
  - Id: 510286a9-8cd5-47bd-a259-08d68641480a
  - Update Frequency: EveryBuild
  - Enabled: True
  - Batchable: False
  - Merge Policies:
    Standard
https://github.com/aspnet/AspNetCore (.NET Core 3 Release) ==> 'https://github.com/dotnet/core-sdk' ('release/3.0.1xx')
  - Id: 0a2d0ca4-5d87-4bfd-2808-08d690bc5860
  - Update Frequency: EveryBuild
  - Enabled: True
  - Batchable: False
  - Merge Policies:
    Standard
https://github.com/aspnet/AspNetCore (.NET Core 3.1 Dev) ==> 'https://github.com/dotnet/core-sdk' ('release/3.1.1xx')
  - Id: 7fc4cbba-590c-4071-5029-08d727dabd66
  - Update Frequency: EveryBuild
  - Enabled: True
  - Batchable: False
  - Merge Policies:
    Standard

See also:

• add-subscription
• get-subscriptions
• trigger-subscriptions

set-repository-policies

Set merge policies for the specific repository and branch. These policies only apply to batchable subscriptions. When all repository policies are satisfied, the dependency update pull request is automatically merged.

If -q is not passed, the command pops up a edit dialog so that the repository policies may be edited.

Parameters

• --repo - Name of repository to set repository merge policies for.
• --branch - Name of repository to get repository merge policies for.
• --standard-automerge - Use standard auto-merge policies. GitHub ignores WIP and license/cla checks,Azure DevOps ignores comment, reviewer and work item linking. Neither will auto-merge if changes are requested.
• --all-checks-passed - PR is automatically merged if there is at least one check and all are passed. Optionally provide a comma separated list of ignored checks with --ignore-checks.
• --ignore-checks - For use with --all-checks-passed. A set of checks that are ignored.
• --no-requested-changes - PR is not merged if there are changes requested or the PR has been rejected.
• --no-extra-commits - PR is automatically merged if no non-bot commits exist in the PR.
• -q, --quiet- Non-interactive mode (requires all elements to be passed on the command line).

Sample:

PS D:\enlistments\websdk> darc set-repository-policies --repo https://github.com/dotnet/corefx --branch master --standard-automerge -q
Successfully updated merge policies for https://github.com/dotnet/corefx@master.

PS D:\enlistments\websdk> darc get-repository-policies --repo https://github.com/dotnet/corefx --branch master --all
https://github.com/dotnet/corefx @ master
- Merge Policies:
  Standard
https://github.com/dotnet/corefxlab @ master
- Merge Policies: []

See also:

• get-repository-policies
• get-subscriptions
• add-subscription

subscription-status

Enables or disables a subscription matching the id. You can find out whether a subscription is disabled or enabled using get-subscriptions.

Parameters

• --id - (Required). Subscription's id.
• -e, --enable - Enable subscription. Either --enable or --disable is required.
• -d, --disable - Disable subscription. Either --enable or --disable is required.

Sample:

PS D:\enlistments\websdk> darc subscription-status --id 1abbb4c1-19d8-4912-fab8-08d6a19aff91 --disable
Successfully disabled subscription with id '1abbb4c1-19d8-4912-fab8-08d6a19aff91'.

PS D:\enlistments\websdk> darc get-subscriptions --source-repo aspnetcore --target-repo websdk --channel Dev
https://github.com/aspnet/AspNetCore (.NET 5 Dev) ==> 'https://github.com/aspnet/websdk' ('master')
  - Id: 1abbb4c1-19d8-4912-fab8-08d6a19aff91
  - Update Frequency: EveryDay
  - Enabled: False
  - Batchable: False
  - Merge Policies:
    Standard

PS D:\enlistments\websdk> darc subscription-status --id 1abbb4c1-19d8-4912-fab8-08d6a19aff91 --enable
Successfully enabled subscription with id '1abbb4c1-19d8-4912-fab8-08d6a19aff91'.

PS D:\enlistments\websdk> darc get-subscriptions --source-repo aspnetcore --target-repo websdk --channel Dev
https://github.com/aspnet/AspNetCore (.NET 5 Dev) ==> 'https://github.com/aspnet/websdk' ('master')
  - Id: 1abbb4c1-19d8-4912-fab8-08d6a19aff91
  - Update Frequency: EveryDay
  - Enabled: True
  - Batchable: False
  - Merge Policies:
    Standard

See also:

• get-subscriptions

trigger-subscriptions

Triggers one or more subscriptions. For each subscription triggered, Maestro++ will create a new PR or update an existing one into the repo to update to the latest build (or specified build, if one is provided), regardless if the build had been applied previously or not.

This update is not asynchronous and usually takes a few minutes, as Maestro++ needs to do a fair bit of work in the background. New PRs created by trigger-subscriptions have dotnet-maestro[bot] as their author.

Like get-subscriptions, trigger-subscriptions takes a number of input parameters to filter the available subscriptions to the desired set, though at least one input must be specified. Unless -q, --quiet is specified, darc will ask for confirmation before sending the trigger request.

Parameters

• --id - Trigger subscription by id. Not compatible with other filtering parameters.
• --build - If specified, selects a specific BAR build id to use; otherwise will use the latest available from the supplied --source-repo id.
• --target-repo - Filter by target repo (matches substring unless --exact or --regex is passed).
• --source-repo - Filter by source repo (matches substring unless --exact or --regex is passed).
• --channel - Filter by source channel (matches substring unless --exact or --regex is passed).
• --target-branch - Filter by target branch (matches substring unless --exact or --regex is passed).
• --exact - Match subscription parameters exactly (cannot be used with --regex).
• --regex - Match subscription parameters using regex (cannot be used with --exact).
• -q, --quiet - Trigger subscriptions without confirmation. Be careful!

Sample:

PS D:\enlistments\arcade> darc trigger-subscriptions --source-repo arcade --target-repo arcade-services

Will trigger the following 1 subscriptions...
  https://github.com/dotnet/arcade (.NET Tools - Latest) ==> 'https://github.com/dotnet/arcade-services' ('master')
Continue? (y/n) y
Triggering 1 subscriptions...done

PS D:\enlistments\arcade> darc trigger-subscriptions --source-repo arcade --target-repo arcade-services --build 123
Subscription updates will use Build # 123 instead of latest available
Will trigger the following 1 subscriptions...
  https://github.com/dotnet/arcade (.NET Tools - Latest) ==> 'https://github.com/dotnet/arcade-services' ('master')
Continue? (y/n) y
Triggering 1 subscriptions...done

See also:

• add-subscription
• get-subscriptions
• trigger-subscriptions

update-dependencies

Updates the local repository's dependencies against a channel.

This operation is similar to what a Maestro++ subscription does, only local. darc reads the Version.Details.xml file and notes the dependency name and repository uri of each dependency. Then, given an input channel, it looks up the latest build of each dependency's repository that has been applied to the channel. It then updates the Version.Details.xml and other version files (e.g. Versions.props) based on the newest information.

This command has two additional non-default modes:

• Use a local package folder as input, avoiding a remote call to the build asset registry (--packages-folder)
• Update a specific dependency to a new version (--name and --version)

This command is especially useful after adding new dependencies to a repository. See Updating dependencies in your local repository for more information.

Parameters

• -c, --channel - Channel to pull dependencies from.
• -n, --name - Optional name of dependency to update. Otherwise all dependencies existing on 'channel' are updated.
• -v, --version - The new version of dependency with the name specified by --name.
• --source-repo - Only update dependencies whose source uri contains this string.
• --packages-folder - An optional path to a folder which contains the NuGet packages whose versions will be used to update existing dependencies.
• --dry-run - Show what will be updated, but make no changes.

Sample

PS C:\enlistments\core-setup> darc update-dependencies --channel ".NET 5 Dev"

Looking up latest build of https://github.com/dotnet/corefx on .NET 5 Dev
Looking up latest build of https://github.com/dotnet/standard on .NET 5 Dev
Looking up latest build of https://github.com/dotnet/coreclr on .NET 5 Dev
Looking up latest build of https://dev.azure.com/dnceng/internal/_git/dotnet-wpf-int on .NET 5 Dev
Looking up latest build of https://github.com/dotnet/arcade on .NET 5 Dev
Looking up latest build of https://github.com/dotnet/sourcelink on .NET 5 Dev
Updating 'System.Windows.Extensions': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.CodeDom': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'Microsoft.NETCore.Platforms': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'Microsoft.NETCore.Targets': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'Microsoft.Private.CoreFx.NETCoreApp': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'Microsoft.Win32.Registry': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'Microsoft.Win32.SystemEvents': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'Microsoft.Windows.Compatibility': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.Configuration.ConfigurationManager': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.Resources.Extensions': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.Security.AccessControl': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.Security.Cryptography.Cng': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.Security.Cryptography.Pkcs': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.Security.Cryptography.ProtectedData': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.Security.Cryptography.Xml': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.Security.Permissions': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.Security.Principal.Windows': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.Text.Encodings.Web': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.Text.Json': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.Threading.AccessControl': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.Diagnostics.EventLog': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.DirectoryServices': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.Drawing.Common': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.IO.FileSystem.AccessControl': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'System.IO.Packaging': '5.0.0-alpha1.19462.7' => '5.0.0-alpha1.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/corefx')
Updating 'Microsoft.NETCore.Runtime.CoreCLR': '5.0.0-alpha1.19462.1' => '5.0.0-alpha1.19466.3' (from build '20190916.3' of 'https://github.com/dotnet/coreclr')
Updating 'Microsoft.DotNet.Wpf.DncEng': '5.0.0-alpha1.19462.37' => '5.0.0-alpha1.19467.8' (from build '20190917.8' of 'https://dev.azure.com/dnceng/internal/_git/dotnet-wpf-int')
Updating 'NETStandard.Library': '2.2.0-prerelease.19462.3' => '2.2.0-prerelease.19467.1' (from build '20190917.1' of 'https://github.com/dotnet/standard')
Checking for coherency updates...
Updating 'Microsoft.Private.Winforms': '5.0.0-alpha1.19462.11' => '5.0.0-alpha1.19467.4' to ensure coherency with Microsoft.DotNet.Wpf.DncEng@5.0.0-alpha1.19467.8
Updating 'Microsoft.DotNet.Wpf.GitHub': '5.0.0-alpha1.19462.16' => '5.0.0-alpha1.19467.4' to ensure coherency with Microsoft.DotNet.Wpf.DncEng@5.0.0-alpha1.19467.8
Local dependencies updated from channel '.NET 5 Dev'.

See Also:

• add
• get-dependencies
• get-channels

update-subscription

Update an existing subscription. Opens an editor so that some properties of a subscription may be altered. Because of the way that Maestro++ tracks pull requests, the target parameters of a subscription (target repository and target branch) may not be edited.

Parameters

• --id - (Required). Subscription's id.

Sample:

PS D:\enlistments\websdk> darc get-subscriptions --source-repo aspnetcore --target-repo websdk --channel Dev
https://github.com/aspnet/AspNetCore (.NET 5 Dev) ==> 'https://github.com/aspnet/websdk' ('master')
  - Id: 1abbb4c1-19d8-4912-fab8-08d6a19aff91
  - Update Frequency: EveryDay
  - Enabled: True
  - Batchable: False
  - Merge Policies:
    AllChecksSuccessful
      ignoreChecks = []

PS D:\enlistments\websdk> darc update-subscription --id 1abbb4c1-19d8-4912-fab8-08d6a19aff91
Successfully updated subscription with id '1abbb4c1-19d8-4912-fab8-08d6a19aff91'.

PS D:\enlistments\websdk> darc get-subscriptions --source-repo aspnetcore --target-repo websdk --channel Dev
https://github.com/aspnet/AspNetCore (.NET 5 Dev) ==> 'https://github.com/aspnet/websdk' ('master')
  - Id: 1abbb4c1-19d8-4912-fab8-08d6a19aff91
  - Update Frequency: EveryDay
  - Enabled: True
  - Batchable: False
  - Merge Policies:
    Standard

See also:

• get-subscriptions
• add-subscription

verify

Verifies the local repository state is valid. This checks that:

• The Version.Details.xml file is readable and in the expected format.
• The Versions.props file is in an appropriate xml format.
• The global.json file is in the expected format.
• Dependencies in the Version.Details.xml files are utilized in the Versions.props or global.json files.
• Version numbers match between Version.Details.xml and corresponding expression of those dependencies in Versions.props/global.json

Parameters

None.

Sample

PS C:\enlistments\core-setup> darc verify
Dependency verification succeeded.

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