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PyHelm

Python bindings for the Helm package manager

Helm gRPC

The helm gRPC libraries are located in the hapi directory. They were generated with the grpc_tools.protoc utility against Helm 2.1.3. Should you wish to re-generate them you can easily do so:

git clone https://github.com/kubernetes/helm ./helm
python -m grpc_tools.protoc -I helm/_proto --python_out=. --grpc_python_out=. _proto/hapi/chart/*
python -m grpc_tools.protoc -I helm/_proto --python_out=. --grpc_python_out=. _proto/hapi/services/*
python -m grpc_tools.protoc -I helm/_proto --python_out=. --grpc_python_out=. _proto/hapi/release/*
python -m grpc_tools.protoc -I helm/_proto --python_out=. --grpc_python_out=. _proto/hapi/version/*

How to use Pyhelm

Looks like Pyhelm support only install chart from local folder

  1. First you need repo_url and chart name to download chart:

    from pyhelm.repo import from_repo

chart_path = chart_versions = from_repo('https://kubernetes-charts.storage.googleapis.com/', 'mariadb')

print(chart_path)
"/tmp/pyhelm-kibwtj8d/mongodb"

  2. Now you can see that chart folder of mongodb:

    In [3]: ls -la /tmp/pyhelm-kibwtj8d/mongodb
total 40
drwxr-xr-x  7 andrii  wheel   224 Mar 21 17:26 ./
drwx------  3 andrii  wheel    96 Mar 21 17:26 ../
-rwxr-xr-x  1 andrii  wheel     5 Jan  1  1970 .helmignore*
-rwxr-xr-x  1 andrii  wheel   261 Jan  1  1970 Chart.yaml*
-rwxr-xr-x  1 andrii  wheel  4394 Jan  1  1970 README.md*
drwxr-xr-x  8 andrii  wheel   256 Mar 21 17:26 templates/

  3. Next step to build ChartBuilder instance to manipulate with Tiller:

    from pyhelm.chartbuilder import ChartBuilder

chart = ChartBuilder({'name': 'mongodb', 'source': {'type': 'directory', 'location': '/tmp/pyhelm-kibwtj8d/mongodb'}})

# than we can get chart meta data etc
In [9]: chart.get_metadata()
Out[9]:
name: "mongodb"
version: "0.4.0"
description: "Chart for MongoDB"

  4. Install chart:

    from pyhelm.chartbuilder import ChartBuilder
from pyhelm.tiller import Tiller

chart = ChartBuilder({'name': 'mongodb', 'source': {'type': 'directory', 'location': '/tmp/pyhelm-kibwtj8d/mongodb'}})
t.install_release(chart.get_helm_chart(), dry_run=False, namespace='default')

Out[9]:
release {
  name: "fallacious-bronco"
  info {
    status {
      code: 6
    }
    first_deployed {
      seconds: 1521647335
      nanos: 746785000
    }
    last_deployed {
      seconds: 1521647335
      nanos: 746785000
    }
    Description: "Dry run complete"
  }
  chart {....
}