|
|
|
|
# Developers Guide
|
|
|
|
|
|
|
|
|
|
This guide explains how to set up your environment for developing on
|
|
|
|
|
Helm and Tiller.
|
|
|
|
|
|
|
|
|
|
## Prerequisites
|
|
|
|
|
|
|
|
|
|
- Go 1.6.0 or later
|
|
|
|
|
- Glide 0.10.2 or later
|
|
|
|
|
- kubectl 1.2 or later
|
|
|
|
|
- A Kubernetes cluster (optional)
|
|
|
|
|
- The gRPC toolchain
|
|
|
|
|
|
|
|
|
|
## Building Helm/Tiller
|
|
|
|
|
|
|
|
|
|
We use Make to build our programs. The simplest way to get started is:
|
|
|
|
|
|
|
|
|
|
```console
|
|
|
|
|
$ make boostrap build
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
This will build both Helm and Tiller.
|
|
|
|
|
|
|
|
|
|
To run all of the tests (without running the tests for `vendor/`), run
|
|
|
|
|
`make test`.
|
|
|
|
|
|
|
|
|
|
To run Helm and Tiller locally, you can run `bin/helm` or `bin/tiller`.
|
|
|
|
|
|
|
|
|
|
- Helm and Tiller are known to run on Mac OSX and most Linuxes, including
|
|
|
|
|
Alpine.
|
|
|
|
|
- Tiller must have access to a Kubernets cluster. It learns about the
|
|
|
|
|
cluster by examining the Kube config files that `kubectl` uese.
|
|
|
|
|
|
|
|
|
|
## gRPC and Protobuf
|
|
|
|
|
|
|
|
|
|
Helm and Tiller communicate using gRPC. To get started with gRPC, you will need to...
|
|
|
|
|
|
|
|
|
|
- Install `protoc` for compiling protobuf files. Releases are
|
|
|
|
|
[here](https://github.com/google/protobuf/releases)
|
|
|
|
|
- Install the protoc Go plugin: `go get -u github.com/golang/protobuf/protoc-gen-go`
|
|
|
|
|
|
|
|
|
|
Note that you need to be on protobuf 3.x (`protoc --version`) and use the latest Go plugin.
|
|
|
|
|
|
|
|
|
|
While the gRPC and ProtoBuf specs remain silent on indentation, we
|
|
|
|
|
require that the indentation style matches the Go format specification.
|
|
|
|
|
Namely, protocol buffers should use tab-based indentation and rpc
|
|
|
|
|
declarations should follow the style of Go function declarations.
|
|
|
|
|
|
|
|
|
|
### The Helm API (HAPI)
|
|
|
|
|
|
|
|
|
|
We use gRPC as an API layer. See `pkg/proto/hapi` for the generated Go code,
|
|
|
|
|
and `_proto` for the protocol buffer definitions.
|
|
|
|
|
|
|
|
|
|
To regenerate the Go files from the protobuf source, `make protoc`.
|
|
|
|
|
|
|
|
|
|
## Docker Images
|
|
|
|
|
|
|
|
|
|
To build Docker images, use `make docker-build`
|
|
|
|
|
|
|
|
|
|
## Running a Local Cluster
|
|
|
|
|
|
|
|
|
|
You can run tests locally using the `scripts/local-cluster.sh` script to
|
|
|
|
|
start Kubernetes inside of a Docker container. For OS X, you will need
|
|
|
|
|
to be running `docker-machine`.
|
|
|
|
|
|
|
|
|
|
## Contribution Guidelines
|
|
|
|
|
|
|
|
|
|
We welcome contributions. This project has set up some guidelines in
|
|
|
|
|
order to ensure that (a) code quality remains high, (b) the project
|
|
|
|
|
remains consistent, and (c) contributions follow the open source legal
|
|
|
|
|
requirements. Our intent is not to burden contributors, but to build
|
|
|
|
|
elegant and high-quality open source code so that our users will benefit.
|
|
|
|
|
|
|
|
|
|
Make sure you have read and understood the main CONTRIBUTING guide:
|
|
|
|
|
|
|
|
|
|
https://github.com/kubernetes/helm/blob/master/CONTRIBUTING.md
|
|
|
|
|
|
|
|
|
|
We follow the coding standards and guidelines outlined by the Deis
|
|
|
|
|
project:
|
|
|
|
|
|
|
|
|
|
https://github.com/deis/workflow/blob/master/CONTRIBUTING.md
|
|
|
|
|
https://github.com/deis/workflow/blob/master/src/contributing/submitting-a-pull-request.md
|
|
|
|
|
|
|
|
|
|
Adidtionally, contributors must have a CLA with CNCF/Google before we can
|
|
|
|
|
accept contributions.
|
