141 lines
3.8 KiB
Python
141 lines
3.8 KiB
Python
from hapi.services.tiller_pb2 import ReleaseServiceStub, ListReleasesRequest, InstallReleaseRequest, UpdateReleaseRequest
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from hapi.chart.config_pb2 import Config
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from logutil import LOG
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from k8s import K8s
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import grpc
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TILLER_PORT=44134
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TILLER_VERSION=b'2.1.3'
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TILLER_TIMEOUT=300
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class Tiller(object):
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'''
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The Tiller class supports communication and requests to the Tiller Helm
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service over gRPC
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'''
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def __init__(self):
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# init k8s connectivity
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self.k8s = K8s()
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# init tiller channel
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self.channel = self.get_channel()
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# init timeout for all requests
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# and assume eventually this will
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# be fed at runtime as an override
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self.timeout = TILLER_TIMEOUT
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@property
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def metadata(self):
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'''
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Return tiller metadata for requests
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'''
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return [(b'x-helm-api-client', TILLER_VERSION)]
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def get_channel(self):
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'''
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Return a tiller channel
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'''
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tiller_ip = self._get_tiller_ip()
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tiller_port = self._get_tiller_port()
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return grpc.insecure_channel('%s:%s' % (tiller_ip, tiller_port))
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def _get_tiller_pod(self):
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'''
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Search all namespaces for a pod beginning with tiller-deploy*
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'''
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ret = self.k8s.client.list_pod_for_all_namespaces()
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for i in ret.items:
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# TODO(alanmeadows): this is a bit loose
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if i.metadata.name.startswith('tiller-deploy'):
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return i
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def _get_tiller_ip(self):
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'''
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Returns the tiller pod's IP address by searching all namespaces
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'''
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pod = self._get_tiller_pod()
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return pod.status.pod_ip
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def _get_tiller_port(self):
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'''Stub method to support arbitrary ports in the future'''
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return TILLER_PORT
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def list_releases(self):
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'''
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List Helm Releases
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'''
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stub = ReleaseServiceStub(self.channel)
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req = ListReleasesRequest()
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return stub.ListReleases(req, self.timeout, metadata=self.metadata)
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def list_charts(self):
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'''
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List Helm Charts from Latest Releases
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Returns list of (name, version, chart, values)
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'''
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charts = []
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for x in self.list_releases():
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try:
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latest_release = x.releases[-1]
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charts.append((latest_release.name, latest_release.version, latest_release.chart, latest_release.config.raw))
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except IndexError:
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continue
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return charts
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def get_release(self):
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'''
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Fetch a specific release
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'''
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def update_release(self, chart, dry_run, name, disable_hooks=False, values=None):
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'''
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Update a Helm Release
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'''
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if values is None:
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values = Config(raw='')
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else:
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values = Config(raw=values)
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# build release install request
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stub = ReleaseServiceStub(self.channel)
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release_request = UpdateReleaseRequest(
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chart=chart,
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dry_run=dry_run,
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disable_hooks=disable_hooks,
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values=values,
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name=name)
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return stub.UpdateRelease(release_request, self.timeout, metadata=self.metadata)
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def install_release(self, chart, dry_run, name, namespace, values=None):
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'''
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Create a Helm Release
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'''
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if values is None:
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values = Config(raw='')
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else:
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values = Config(raw=values)
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# build release install request
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stub = ReleaseServiceStub(self.channel)
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release_request = InstallReleaseRequest(
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chart=chart,
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dry_run=dry_run,
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values=values,
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name=name,
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namespace=namespace)
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return stub.InstallRelease(release_request, self.timeout, metadata=self.metadata) |