Thanks to golang-standards
-
Clone the project
git clone https://github.com/Kahfimaulana/project-layout.git -
Use
depto manage dependencies
dep init
Main applications for this project.
The directory name for each application should match the name of the executable you want to have (e.g., /cmd/myapp).
Don't put a lot of code in the application directory. If you think the code can be imported and used in other projects, then it should live in the /pkg directory. If the code is not reusable or if you don't want others to reuse it, put that code in the /internal directory. You'll be surprised what others will do, so be explicit about your intentions!
It's common to have a small main function that imports and invokes the code from the /internal and /pkg directories and nothing else.
See the /cmd directory for examples.
Private application and library code. This is the code you don't want others importing in their applications or libraries.
Put your actual application code in the /internal/app directory (e.g., /internal/app/myapp) and the code shared by those apps in the /internal/pkg directory (e.g., /internal/pkg/myprivlib).
Library code that's ok to use by external applications (e.g., /pkg/mypubliclib). Other projects will import these libraries expecting them to work, so think twice before you put something here :-)
It's also a way to group Go code in one place when your root directory contains lots of non-Go components and directories making it easier to run various Go tool (as mentioned in the Best Practices for Industrial Programming from GopherCon EU 2018).
See the /pkg directory if you want to see which popular Go repos use this project layout pattern. This is a common layout pattern, but it's not universally accepted and some in the Go community don't recommend it.
OpenAPI/Swagger specs, JSON schema files, protocol definition files.
See the /api directory for examples.
Configuration file templates or default configs.
Put your confd or consul-template template files here.
System init (systemd, upstart, sysv) and process manager/supervisor (runit, supervisord) configs.
Scripts to perform various build, install, analysis, etc operations.
These scripts keep the root level Makefile small and simple (e.g., https://github.com/hashicorp/terraform/blob/master/Makefile).
See the /scripts directory for examples.
Packaging and Continuous Integration.
Put your cloud (AMI), container (Docker), OS (deb, rpm, pkg) package configurations and scripts in the /build/package directory.
Put your CI (travis, circle, drone) configurations and scripts in the /build/ci directory. Note that some of the CI tools (e.g., Travis CI) are very picky about the location of their config files. Try putting the config files in the /build/ci directory linking them to the location where the CI tools expect them (when possible).
IaaS, PaaS, system and container orchestration deployment configurations and templates (docker-compose, kubernetes/helm, mesos, terraform, bosh).
Additional external test apps and test data. Feel free to structure the /test directory anyway you want. For bigger projects it makes sense to have a data subdirectory. For example, you can have /test/data or /test/testdata if you need Go to ignore what's in that directory. Note that Go will also ignore directories or files that begin with "." or "_", so you have more flexibility in terms of how you name your test data directory.
See the /test directory for examples.
Design and user documents (in addition to your godoc generated documentation).
See the /docs directory for examples.
Supporting tools for this project. Note that these tools can import code from the /pkg and /internal directories.
See the /tools directory for examples.
External helper tools, forked code and other 3rd party utilities (e.g., Swagger UI).
Git hooks.
Other folder to keep a statics files (images, logos, etc).
Some Go projects do have a src folder, but it usually happens when the devs came from the Java world where it's a common pattern. If you can help yourself try not to adopt this Java pattern. You really don't want your Go code or Go projects to look like Java :-)
Don't confuse the project level /src directory with the /src directory Go uses for its workspaces as described in How to Write Go Code. The $GOPATH environment variable points to your (current) workspace (by default it points to $HOME/go on non-windows systems). This workspace includes the top level /pkg, /bin and /src directories. Your actual project ends up being a sub-directory under /src, so if you have the /src directory in your project the project path will look like this: /some/path/to/workspace/src/your_project/src/your_code.go. Note that with Go 1.11 it's possible to have your project outside of your GOPATH, but it still doesn't mean it's a good idea to use this layout pattern.