This project represent itself high level wrapper upon ThoughtWorks GoCD REST API. Go Continuous Delivery is continues integration/deployment server, which helps you automate and streamline the build-test-release cycle for worry-free. Using this library you can access to internals of the Pipelines, check their statuses, download Artifacts and more.

Library has a Yagocd class, which is a single entry point of whole project. Creating instance of it would give you possibilities to work with all functionality.

$ pip install yagocd

from yagocd import Yagocd

go = Yagocd(
    server='https://example.com',
    auth=('user', 'password'),
    options={
        'verify': False # skip verification for SSL certificates.
    }
)

for pipeline in go.pipelines.list():
    for instance in pipeline.history():
        for stage in instance.stages():
            for job in stage.jobs():
                # print artifact urls for each job
                for artifact in job.artifact.list():
                    for file_obj in artifact.files():
                        print(file_obj.data.url)

                # print property of each job
                for key, value in job.prop.list().items():
                    print "{} => {}".format(key, value)

The code in the library organized as follows: the main entry point, that user should use is yagocd.client.Yagocd class. Creating instance of it gives you access to all properties and actions GoCD server provides. This class contains list of managers, each of which is responsible for it's particular area. Each manager could be accessed as a property of Yagocd class. Here is list of them:

• agents: manage build agents
• configurations: manage configuration
• feeds: work with feeds
• materials: list,modify and notify materials
• pipelines: work with pipelines
• properties: work with job's properties
• stages: work with stages
• users: manage users

Each of managers wraps REST API calls in functions. Depending on return value, it could be possible to get instance of another class, that will provide additional functionality. For example, yagocd.resources.pipeline.PipelineManager manager could return instance of yagocd.resources.pipeline.PipelineEntity, which represents itself entity of specific pipeline and has corresponding methods.

Here is list of similar projects, that implements GoCD API:

• [python] py-gocd: A Python API for interacting with Go Continuous Delivery
• [python] gocdapi: A Python API for accessing resources and configuring Go (thoughtworks) continuous-delivery servers
• [python] gomatic: A Python API for configuring GoCD
• [ruby] goapi: Go (http://www.go.cd) API ruby client
• [NodeJS] gocd-api: Access http://www.go.cd API via nodeJS
• [GoLang] gocd-api: An implementation of the gocd API

Original API is part of the open source GoCD project. But it's difficult to find appropriate implementation.

• First, there are url rewrite rules in /server/webapp/WEB-INF/urlrewrite.xml in <!-- RESTful URLS --> section.
• Second, there is /server/webapp/WEB-INF/rails.new/config/routes.rb file, in which some routes are set as well.
• Third, in /server/src/com/thoughtworks/go/server/controller folder there is implementation of all API endpoints, but with different interfaces and URLs (which are handled by aforementioned configs).

Using this information could give better understanding of internals of Go server for future development and support.

As described in this post, there is ready to use Virtual Box image with pre-configured GoCD server and agent, which could easy development and debugging. To run, executing this command (ensure, that vagrant and Virtual Box are installed):

$ vagrant init gocd/gocd-demo

In the current directory will be created Vagrantfile with initial content. I recommend forward ports:

One for http, another for https -- this will make it possible to use it from https://localhost:8154/go/ url. After that run

$ vagrant up

and wait some time for machine to load and service to be up.