Initial commit

plugins/modules/cloud/misc/helm.py

@@ -0,0 +1,209 @@
+#!/usr/bin/python
+# (c) 2016, Flavio Percoco <flavio@redhat.com>
+#
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
+
+ANSIBLE_METADATA = {'metadata_version': '1.1',
+                    'status': ['preview'],
+                    'supported_by': 'community'}
+
+DOCUMENTATION = '''
+---
+module: helm
+short_description: Manages Kubernetes packages with the Helm package manager
+author: "Flavio Percoco (@flaper87)"
+description:
+   - Install, upgrade, delete and list packages with the Helm package manager.
+requirements:
+  - "pyhelm"
+  - "grpcio"
+options:
+  host:
+    description:
+      - Tiller's server host.
+    default: "localhost"
+  port:
+    description:
+      - Tiller's server port.
+    default: 44134
+  namespace:
+    description:
+      - Kubernetes namespace where the chart should be installed.
+    default: "default"
+  name:
+    description:
+      - Release name to manage.
+  state:
+    description:
+      - Whether to install C(present), remove C(absent), or purge C(purged) a package.
+    choices: ['absent', 'purged', 'present']
+    default: "present"
+  chart:
+    description: |
+      A map describing the chart to install. See examples for available options.
+    default: {}
+  values:
+    description:
+      - A map of value options for the chart.
+    default: {}
+  disable_hooks:
+    description:
+      - Whether to disable hooks during the uninstall process.
+    type: bool
+    default: 'no'
+'''
+
+RETURN = ''' # '''
+
+EXAMPLES = '''
+- name: Install helm chart
+  helm:
+    host: localhost
+    chart:
+      name: memcached
+      version: 0.4.0
+      source:
+        type: repo
+        location: https://kubernetes-charts.storage.googleapis.com
+    state: present
+    name: my-memcached
+    namespace: default
+
+- name: Uninstall helm chart
+  helm:
+    host: localhost
+    state: absent
+    name: my-memcached
+
+- name: Install helm chart from a git repo
+  helm:
+    host: localhost
+    chart:
+      source:
+        type: git
+        location: https://github.com/user/helm-chart.git
+    state: present
+    name: my-example
+    namespace: default
+    values:
+      foo: "bar"
+
+- name: Install helm chart from a git repo specifying path
+  helm:
+    host: localhost
+    chart:
+      source:
+        type: git
+        location: https://github.com/helm/charts.git
+        path: stable/memcached
+    state: present
+    name: my-memcached
+    namespace: default
+    values: "{{ lookup('file', '/path/to/file/values.yaml') | from_yaml }}"
+'''
+
+import traceback
+HELM_IMPORT_ERR = None
+try:
+    import grpc
+    from pyhelm import tiller
+    from pyhelm import chartbuilder
+except ImportError:
+    HELM_IMPORT_ERR = traceback.format_exc()
+
+from ansible.module_utils.basic import AnsibleModule, missing_required_lib
+
+
+def install(module, tserver):
+    changed = False
+    params = module.params
+    name = params['name']
+    values = params['values']
+    chart = module.params['chart']
+    namespace = module.params['namespace']
+
+    chartb = chartbuilder.ChartBuilder(chart)
+    r_matches = (x for x in tserver.list_releases()
+                 if x.name == name and x.namespace == namespace)
+    installed_release = next(r_matches, None)
+    if installed_release:
+        if installed_release.chart.metadata.version != chart['version']:
+            tserver.update_release(chartb.get_helm_chart(), False,
+                                   namespace, name=name, values=values)
+            changed = True
+    else:
+        tserver.install_release(chartb.get_helm_chart(), namespace,
+                                dry_run=False, name=name,
+                                values=values)
+        changed = True
+
+    return dict(changed=changed)
+
+
+def delete(module, tserver, purge=False):
+    changed = False
+    params = module.params
+
+    if not module.params['name']:
+        module.fail_json(msg='Missing required field name')
+
+    name = module.params['name']
+    disable_hooks = params['disable_hooks']
+
+    try:
+        tserver.uninstall_release(name, disable_hooks, purge)
+        changed = True
+    except grpc._channel._Rendezvous as exc:
+        if 'not found' not in str(exc):
+            raise exc
+
+    return dict(changed=changed)
+
+
+def main():
+    """The main function."""
+    module = AnsibleModule(
+        argument_spec=dict(
+            host=dict(type='str', default='localhost'),
+            port=dict(type='int', default=44134),
+            name=dict(type='str', default=''),
+            chart=dict(type='dict'),
+            state=dict(
+                choices=['absent', 'purged', 'present'],
+                default='present'
+            ),
+            # Install options
+            values=dict(type='dict'),
+            namespace=dict(type='str', default='default'),
+
+            # Uninstall options
+            disable_hooks=dict(type='bool', default=False),
+        ),
+        supports_check_mode=True)
+
+    if HELM_IMPORT_ERR:
+        module.fail_json(msg=missing_required_lib('pyhelm'), exception=HELM_IMPORT_ERR)
+
+    host = module.params['host']
+    port = module.params['port']
+    state = module.params['state']
+    tserver = tiller.Tiller(host, port)
+
+    if state == 'present':
+        rst = install(module, tserver)
+
+    if state in 'absent':
+        rst = delete(module, tserver)
+
+    if state in 'purged':
+        rst = delete(module, tserver, True)
+
+    module.exit_json(**rst)
+
+
+if __name__ == '__main__':
+    main()