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 {....
   }