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CapsuleCD is a generic Continuous Delivery pipeline for versioned artifacts and libraries written in any language. Its goal is to bring automation to the packaging and deployment stage of your library release cycle. CapsuleCD is incredibly flexible, and works best when implemented side-by-side with a CI pipeline.
A short list of the features...
- Supports libraries written in any language. Has built-in support for
- Chef Cookbooks
- Python Pip
- NodeJS Npm Packages
- Ruby Gems
- Golang Packages
- Highly configurable
- Follows language/library best practices. Including things like:
- automatically bumping the semvar version number
- regenerating any
*.lockfiles/ shrinkwrap files with new version
- creating any recommended files (eg.
- validates all dependencies exist (by vendoring locally)
- vulnerability scanning in dependencies
- running unit tests
- linting library syntax
- source formatting
- generating code coverage reports
- updating changelog
- uploading versioned artifact to community hosting service (rubygems/supermarket/pypi/etc)
- creating a new git tag
- pushing changes back to source control (github)
- creating a new release in source control (github) and attaching any common artifacts
What is CapsuleCD
CapsuleCD is a generic Continuous Delivery pipeline for versioned artifacts and libraries written in any language. Its goal is to bring automation to the packaging and deployment stage of your library release cycle. It automates away all the common steps required when creating a new version of your library.
Why use CapsuleCD
At first glance, it seems simple to publish a new library version. Just bump the version number and publish, right? Well, not always:
- If your library includes a Gemfile.lock, Berksfile.lock or other common lock files, you'll need to regenerate them as the old version number is embedded inside.
- Everyone runs their library unit tests before creating a new release (right?!), but what about validating that your library dependencies exist (maybe in your Company's private repo)?
- How about linting your source, to ensure that it follows common/team conventions?
- Who owns the gem? Is there one developer who has the credentials to push to RubyGems.org? Are they still on your team/on vacation?
- Did you remember to tag your source when the new version was created (making it easy to determine what's changed between versions?)
- Did you update your changelog?
CapsuleCD handles all of that (and more!) for you. It pretty much guarantees that your library will have proper and consistent releases every time. CapsuleCD is well structured and fully tested, unlike the release scripts you've manually cobbled together for each library and language. It can be customized as needed without rewriting from scratch. The best part is that CapsuleCD uses CapsuleCD to automate its releases. We dogfood it so we're the first ones to find any issues with a new release.
How do I start?
You can use CapsuleCD to automate creating a new release from a pull request or from the latest code on your default branch.
Automated pull request processing:
Here's how to use docker to merge a pull request to your Ruby library
docker run \ -e CAPSULE_SCM_GITHUB_ACCESS_TOKEN=123456789ABCDEF \ -e CAPSULE_SCM_REPO_FULL_NAME=AnalogJ/gem_analogj_test \ -e CAPSULE_SCM_PULL_REQUEST=4 \ -e CAPSULE_RUBYGEMS_API_KEY=ASDF12345F \ AnalogJ/capsulecd:ruby capsulecd start --scm github --package_type ruby
Or you could download the latest linux release, and call CapsuleCD directly to merge a pull request to your Python library:
CAPSULE_SCM_GITHUB_ACCESS_TOKEN=123456789ABCDEF \ CAPSULE_SCM_REPO_FULL_NAME=AnalogJ/pip_analogj_test \ CAPSULE_SCM_PULL_REQUEST=2 \ CAPSULE_PYPI_USERNAME=AnalogJ \ CAPSULE_PYPI_PASSWORD=mysupersecurepassword \ capsulecd start --scm github --package_type python
Creating a branch release
TODO: add documentation on how to create a release from the master branch without a pull request. Specify the env variables required.
Every package type is mapped to an engine class which inherits from a
EngineScm class, ie
EngineRuby etc. Every SCM type is mapped to a SCM class, ie
ScmGithub. When CapsuleCD starts, it initializes the
specified Engine, and loads the correct SCM module. Then it begins processing your source code step by step.
|pipeline_init_step||This will initialize the SCM client, ensuring that we can authenticate with the git server|
|scm_retrieve_payload_step||If a Pull Request # is specified, the payload is retrieved from SCM api, otherwise the repo default branch HEAD info is retrived.|
|scm_process_pull_request_payload or scm_process_push_payload||Depending on the retrieve_payload step, the merged pull request is cloned, or the default branch is cloned locally|
|assemble_step||Code is built, which includes adding any missing files/default structure, version bumping, etc.|
|dependencies_step||Download package dependencies|
|compile_step||Optional compilation of source into binaries|
|test_step||Run the package test runner(s) (eg. npm test, rake test, kitchen test, tox), linter, formatter & dependency vulnerbility scanner|
|package_step||Clean any unnecessary files, commit any local changes and create a git tag. Nothing should be pushed to remote repository|
|dist_step||Push the release to the package repository (ie. npm, chef supermarket, rubygems)|
|scm_publish||Push the merged, tested and version updated code up to the source code repository. Also do any source specific releases (github release, asset uploading, etc)|
PYPI_PASSWORD via an environmental variable might make sense, but do you
really want to specify the
REPO_FULL_NAME each time? Probably not.
CapsuleCD has you covered. We support a global YAML configuration file (that can be specified using the
flag), and a repo specific YAML configuration file stored as
capsule.yml inside the repo itself.
CapsuleCD settings are determined by loading configuration in the following order (where the last value specified is used)
- system YAML config file (
- repo YAML config file (
- environmental variables (setting in capital letters and prefixed with
Check the [
example.capsule.yml](example.capsule.yml) file for a full list of all the available coniguration options.
As mentioned above, all settings can be specified via Environmental variable. All you need to do is convert the setting
to uppercase and then prefix it with
pypi_password can be set with
Example System Configuration File
Here's what an example system configuration file might look like:
scm_git_parent_path: /srv/myclonefolder scm_github_api_endpoint: https://git.mycorpsubnet.example.com/v2 scm_github_web_endpoint: https://git.mycorpsubnet.example.com/v2
Step pre/post hooks and overrides
CapsuleCD is completely customizable, to the extent that you can run your own Ruby code as
hooks before every step. To add a
post hook or override a step, just modify your config
yml file by
adding the step you want to modify, and specify
post as a subkey. Then specify your shell commands as a list
--- scm_init: pre: - echo "override pre_scm_configure" - `git clone ...` post: | # do additional cleanup or anything else you want. - echo "override post_scm_configure" assemble_step: post: | # this post hook runs after the assemble_step runs - echo "override post_build_step"
Test suite and continuous integration
CapsuleCD provides an extensive test-suite based on
go test and a full integration suite which uses
You can run all the integration & unit tests with
go test $(glide novendor)
CircleCI is used for continuous integration testing: https://circleci.com/gh/AnalogJ/capsulecd
If you'd like to help improve CapsuleCD, follow the instructions in [CONTRIBUTING.md](CONTRIBUTING.md)
Note that if you would like to do development without Docker, you'll also need to ensure that you have the
git2go dependencies installed on your machine.
You can install these dependencies by using your system's package manager.
- openssl - libgit2 - libssh2
Work your magic and then submit a pull request. We love pull requests!
If you find the documentation lacking, help us out and update this README.md. If you don't have the time to work on CapsuleCD, but found something we should know about, please submit an issue.
We're actively looking for pull requests in the following areas:
- CapsuleCD Engines for other languages
- Objective C
- Any others you can think of
- CapsuleCD Sources
- Any others you can think of
We use SemVer for versioning. For the versions available, see the tags on this repository.
Jason Kulatunga - Initial Development - @AnalogJ
CapsuleCD is licensed under the MIT License - see the LICENSE.md file for details
*Note that all licence references and agreements mentioned in the CapsuleCD README section above are relevant to that project's source code only.