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2 changes: 2 additions & 0 deletions .gitignore
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3 changes: 3 additions & 0 deletions CODE_OF_CONDUCT.md
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This project is governed by [Lyft's code of
conduct](https://github.com/lyft/code-of-conduct). All contributors
and participants agree to abide by its terms.
202 changes: 202 additions & 0 deletions LICENSE
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/

TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

1. Definitions.

"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.

"Licensor" shall mean the copyright owner or entity authorized by
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END OF TERMS AND CONDITIONS

APPENDIX: How to apply the Apache License to your work.

To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "{}"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.

Copyright 2019 Lyft, Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
4 changes: 4 additions & 0 deletions NOTICE
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boilerplate
Copyright 2019 Lyft Inc.

This product includes software developed at Lyft Inc.
93 changes: 93 additions & 0 deletions Readme.rst
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===========
Boilerplate
===========

Overview
--------

Service oriented architectures are composed of multiple isolated components that share cross-cutting concerns (CI, Logging, Image Builds, etc). Settling on uniform conventions for these concerns can help streamline the development process. As a system evolves, so too do these conventions. Updating boilerplate often requires manual copy/paste of boilerplate files across many repos.

``Boilerplate`` acts as a source-of-truth for boilerplate code. Using a config file, a service developer specifies which conventions they want for their service. The boilerplate tool reads this config, and copies the appropriate boilerplate files into the service repository.

Why clone files?
----------------

Another common method for sharing scripts across repositories is to keep them in one place and run the scripts remotely when needed.

While cloning them into the destination repository takes more space, there are a few advantages.

1. Some files like ``.travis.yml`` _must_ exist inside the target repository. Running that remotely is not an option.

2. Calling remote scripts is less secure.

3. Remote scripts adds a dependency on remote services. Copying the files allows users to work offline.

4. Since all boilerplate files are checked into source code, you can easily view updates to the boilerplate files using your version control system.

Adding boilerplate to a repository
----------------------------------

1. Add ``export REPOSITORY=<YOUR_REPO_NAME>`` at the top of the ``Makefile`` in your repository (create a ``Makefile``, if needed)

2. Add the following to your ``Makefile``

::

.PHONY: update_boilerplate
update_boilerplate:
@boilerplate/update.sh

3. Copy the `<https://github.com/lyft/boilerplate/blob/master/boilerplate/update.sh>`_ script and paste it to ``boilerplate/update.sh`` of your repository. Make it executable with ``chmod +x boilerplate/update.sh``

4. Add a file ``boilerplate/update.cfg`` and configure it with the options below.

5. Execute ``make update_boilerplate`` in the root of your repository to sync the boilerplate.

6. Execute ``make update_boilerplate`` periodically to pull in the latest boilerplate.


Configuration
-------------

Boilerplate files are organized into "conventions". Different services require different conventions. For example, python services might require a python Dockerfile, while golang services need a golang Dockerfile. The boilerplate config allows you to opt into only the conventions that suit your needs.

To opt into a convention, configure ``boilerplate/update.cfg`` with the conventions that you'd like to opt in to. The convention files live in `<https://github.com/lyft/boilerplate/tree/master/boilerplate>`_ and are specified in the format ``{namespace}/{convention}``

For example, to opt-into lyft's ``docker_build`` file, add ``lyft/docker_build`` to your ``boilerplate/update.cfg`` file.

below is a full list of available conventions.

`lyft/docker_build <https://github.com/lyft/boilerplate/blob/master/boilerplate/lyft/docker_build/Readme.rst>`_

`lyft/golang_dockerfile <https://github.com/lyft/boilerplate/blob/master/boilerplate/lyft/golang_dockerfile/Readme.rst>`_

`lyft/golangci_file <https://github.com/lyft/boilerplate/blob/master/boilerplate/lyft/golangci_file/Readme.rst>`_

`lyft/golang_test_targets <https://github.com/lyft/boilerplate/blob/master/boilerplate/lyft/golang_dockerfile/Readme.rst>`_

`lyft/pull_request_template <https://github.com/lyft/boilerplate/blob/master/boilerplate/lyft/golang_test_targets/Readme.rst>`_

`lyft/flyte_golang_compile <https://github.com/lyft/boilerplate/blob/master/boilerplate/lyft/flyte_golang_compile/Readme.rst>`_

*Note*: some conventions require some minor configurations, the Readme of the convention should inform you of anything else you need to do.


Developing boilerplate
----------------------

Boilerplate conventions live in the `boilerplate <https://github.com/lyft/boilerplate/tree/master/boilerplate>`_ directory, and come in the format ``{{ namespace }}/{{ convention }}``. This directory should contain all boilerplate files, along with two special files.

Readme.rst
**********

Every boilerplate convention should come with a ``Readme.rst`` that explains:

1. All functionality provided by the boilerplate files.
2. How to use the the boilerplate.

All boilerplate changes should update the Readme.rst to explain the changes. This ensures that a developer syncing boilerplate updates will understand the changes.

Update.sh
*********

Some boilerplate files require small changes beyond the default file cloning. For example, the ``travis.yml`` file needs to exist in the root of your repo (not in the ``boilerplate`` directory where it's cloned by default). After cloning, the ``update.sh`` script for the convention will run. The convention developer can use that script to copy the ``.travis.yml`` file from the boilerplate directory into the root of the repository.
12 changes: 12 additions & 0 deletions boilerplate/lyft/docker_build/Makefile
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# WARNING: THIS FILE IS MANAGED IN THE 'BOILERPLATE' REPO AND COPIED TO OTHER REPOSITORIES.
# ONLY EDIT THIS FILE FROM WITHIN THE 'LYFT/BOILERPLATE' REPOSITORY:
#
# TO OPT OUT OF UPDATES, SEE https://github.com/lyft/boilerplate/blob/master/Readme.rst

.PHONY: docker_build
docker_build:
IMAGE_NAME=$$REPOSITORY ./boilerplate/lyft/docker_build/docker_build.sh

.PHONY: dockerhub_push
dockerhub_push:
IMAGE_NAME=lyft/$$REPOSITORY REGISTRY=docker.io ./boilerplate/lyft/docker_build/docker_build.sh
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Docker Build and Push
~~~~~~~~~~~~~~~~~~~~~

Provides a ``make docker_build`` target that builds your image locally.

Provides a ``make dockerhub_push`` target that pushes your final image to Dockerhub.

The Dockerhub image will tagged ``<REPOSITORY>:<GIT COMMIT SHA>``

If git head has a git tag, the Dockerhub image will also be tagged ``<IMAGE>:<GIT_TAG>``.

**To Enable:**

Add ``lyft/docker_build`` to your ``boilerplate/update.cfg`` file.

Add ``include boilerplate/lyft/docker_build/Makefile`` in your main ``Makefile`` _after_ your REPOSITORY environment variable

::

REPOSITORY=<myreponame>
include boilerplate/lyft/docker_build/Makefile

(this ensures the extra Make targets get included in your main Makefile)
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