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shell from prependpath #231

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merged 6 commits into from
Dec 18, 2019
Merged

shell from prependpath #231

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2ffce0e
Prepend path before locating shell tool
Dec 17, 2019
092847a
Join optional prepended path to path before searching it
Dec 17, 2019
2de5fcb
Use prepended path when whiching shell tool
Dec 17, 2019
4608399
Addition prependPath location
Dec 17, 2019
a6dc4e1
Also use prepended paths when writing out run details
Dec 17, 2019
a5172c8
Small tweak to undo unnecessary change
Dec 18, 2019
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6 changes: 5 additions & 1 deletion src/Runner.Sdk/Util/WhichUtil.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@ namespace GitHub.Runner.Sdk
{
public static class WhichUtil
{
public static string Which(string command, bool require = false, ITraceWriter trace = null)
public static string Which(string command, bool require = false, ITraceWriter trace = null, string prependPath = null)
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maybe check all reference of the Which method to make sure we don't miss something else?

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I dont see anywhere else that it would be useful. Most/all other uses are "internal" such as locating chmod, chown, and cmd/tar (in self-updater) so it seems like we should avoid letting users do things that might get in the way of runner operations

Other than that, the GitSourceProvider uses it, and some people may want to use an updated version of git, but Im not very familiar with what this is used for, since I thought we just check out via action now. Is that somewhere this would be useful?

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i think we should be good, leave the gitsourceprovider along since we already switch to checkout@v2 which has the right behavior anyway. :)

{
ArgUtil.NotNullOrEmpty(command, nameof(command));
trace?.Info($"Which: '{command}'");
Expand All @@ -17,6 +17,10 @@ public static string Which(string command, bool require = false, ITraceWriter tr
trace?.Info("PATH environment variable not defined.");
path = path ?? string.Empty;
}
if (!string.IsNullOrEmpty(prependPath))
{
path = PathUtil.PrependPath(prependPath, path);
}

string[] pathSegments = path.Split(new Char[] { Path.PathSeparator }, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < pathSegments.Length; i++)
Expand Down
19 changes: 11 additions & 8 deletions src/Runner.Worker/Handlers/ScriptHandler.cs
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Expand Up @@ -2,6 +2,7 @@
using System.IO;
using System.Text;
using System.Threading.Tasks;
using System.Linq;
using GitHub.DistributedTask.Pipelines.ContextData;
using GitHub.Runner.Common;
using GitHub.Runner.Sdk;
Expand Down Expand Up @@ -56,26 +57,27 @@ public override void PrintActionDetails(ActionRunStage stage)
string shellCommand;
string shellCommandPath = null;
bool validateShellOnHost = !(StepHost is ContainerStepHost);
string prependPath = string.Join(Path.PathSeparator.ToString(), ExecutionContext.PrependPath.Reverse<string>());
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This is just duplicated from Handler.AddPrependPathToEnvironment so it should function the same. Might could refactor a bit to reduce duplication

Inputs.TryGetValue("shell", out var shell);
if (string.IsNullOrEmpty(shell))
{
#if OS_WINDOWS
shellCommand = "pwsh";
if(validateShellOnHost)
{
shellCommandPath = WhichUtil.Which(shellCommand, require: false, Trace);
shellCommandPath = WhichUtil.Which(shellCommand, require: false, Trace, prependPath);
if (string.IsNullOrEmpty(shellCommandPath))
{
shellCommand = "powershell";
Trace.Info($"Defaulting to {shellCommand}");
shellCommandPath = WhichUtil.Which(shellCommand, require: true, Trace);
shellCommandPath = WhichUtil.Which(shellCommand, require: true, Trace, prependPath);
}
}
#else
shellCommand = "sh";
if (validateShellOnHost)
{
shellCommandPath = WhichUtil.Which("bash") ?? WhichUtil.Which("sh", true, Trace);
shellCommandPath = WhichUtil.Which("bash", false, Trace, prependPath) ?? WhichUtil.Which("sh", true, Trace, prependPath);
}
#endif
argFormat = ScriptHandlerHelpers.GetScriptArgumentsFormat(shellCommand);
Expand All @@ -86,7 +88,7 @@ public override void PrintActionDetails(ActionRunStage stage)
shellCommand = parsed.shellCommand;
if (validateShellOnHost)
{
shellCommandPath = WhichUtil.Which(parsed.shellCommand, true, Trace);
shellCommandPath = WhichUtil.Which(parsed.shellCommand, true, Trace, prependPath);
}

argFormat = $"{parsed.shellArgs}".TrimStart();
Expand Down Expand Up @@ -144,23 +146,24 @@ public async Task RunAsync(ActionRunStage stage)
Inputs.TryGetValue("shell", out var shell);
var isContainerStepHost = StepHost is ContainerStepHost;

string prependPath = string.Join(Path.PathSeparator.ToString(), ExecutionContext.PrependPath.Reverse<string>());
string commandPath, argFormat, shellCommand;
// Set up default command and arguments
if (string.IsNullOrEmpty(shell))
{
#if OS_WINDOWS
shellCommand = "pwsh";
commandPath = WhichUtil.Which(shellCommand, require: false, Trace);
commandPath = WhichUtil.Which(shellCommand, require: false, Trace, prependPath);
if (string.IsNullOrEmpty(commandPath))
{
shellCommand = "powershell";
Trace.Info($"Defaulting to {shellCommand}");
commandPath = WhichUtil.Which(shellCommand, require: true, Trace);
commandPath = WhichUtil.Which(shellCommand, require: true, Trace, prependPath);
}
ArgUtil.NotNullOrEmpty(commandPath, "Default Shell");
#else
shellCommand = "sh";
commandPath = WhichUtil.Which("bash", false, Trace) ?? WhichUtil.Which("sh", true, Trace);
commandPath = WhichUtil.Which("bash", false, Trace, prependPath) ?? WhichUtil.Which("sh", true, Trace, prependPath);
#endif
argFormat = ScriptHandlerHelpers.GetScriptArgumentsFormat(shellCommand);
}
Expand All @@ -169,7 +172,7 @@ public async Task RunAsync(ActionRunStage stage)
var parsed = ScriptHandlerHelpers.ParseShellOptionString(shell);
shellCommand = parsed.shellCommand;
// For non-ContainerStepHost, the command must be located on the host by Which
commandPath = WhichUtil.Which(parsed.shellCommand, !isContainerStepHost, Trace);
commandPath = WhichUtil.Which(parsed.shellCommand, !isContainerStepHost, Trace, prependPath);
argFormat = $"{parsed.shellArgs}".TrimStart();
if (string.IsNullOrEmpty(argFormat))
{
Expand Down