[helm] add the ability for the module to uninstall pending-install releases (#589)

[helm] add the ability for the module to uninstall pending-install releases

SUMMARY

closes #319

ISSUE TYPE


Feature Pull Request

COMPONENT NAME

helm

Reviewed-by: Mike Graves <mgraves@redhat.com>
Reviewed-by: Bikouo Aubin

changelogs/fragments/589-helm-uninstall-chart-releases-with-statuses-different-than-deployed.yaml

@@ -0,0 +1,3 @@
+---
+bugfixes:
+  - helm - fix issue occurring when uninstalling chart with statues others than 'deployed' (https://github.com/ansible-collections/kubernetes.core/issues/319).

plugins/modules/helm.py

@@ -432,14 +432,20 @@ def get_release(state, release_name):
     return None
 
 
-def get_release_status(module, release_name):
+def get_release_status(module, release_name, all_status=False):
     """
-    Get Release state from deployed release
+    Get Release state from all release status (deployed, failed, pending-install, etc)
     """
 
-    list_command = (
-        module.get_helm_binary() + " list --output=yaml --filter " + release_name
-    )
+    list_command = [
+        module.get_helm_binary(),
+        "list",
+        "--output=yaml",
+        "--filter",
+        release_name,
+    ]
+    if all_status:
+        list_command.append("--all")
 
     rc, out, err = module.run_helm_command(list_command)
 
@@ -773,29 +779,31 @@ def main():
         run_repo_update(module)
 
     # Get real/deployed release status
-    release_status = get_release_status(module, release_name)
+    all_status = release_state == "absent"
+    release_status = get_release_status(module, release_name, all_status=all_status)
 
     helm_cmd = module.get_helm_binary()
     opt_result = {}
     if release_state == "absent" and release_status is not None:
-        if replace:
-            module.fail_json(msg="replace is not applicable when state is absent")
+        # skip release statuses 'uninstalled' and 'uninstalling'
+        if not release_status["status"].startswith("uninstall"):
+            if replace:
+                module.fail_json(msg="replace is not applicable when state is absent")
 
-        if wait:
-            helm_version = module.get_helm_version()
-            if LooseVersion(helm_version) < LooseVersion("3.7.0"):
-                opt_result["warnings"] = []
-                opt_result["warnings"].append(
-                    "helm uninstall support option --wait for helm release >= 3.7.0"
-                )
-                wait = False
+            if wait:
+                helm_version = module.get_helm_version()
+                if LooseVersion(helm_version) < LooseVersion("3.7.0"):
+                    opt_result["warnings"] = []
+                    opt_result["warnings"].append(
+                        "helm uninstall support option --wait for helm release >= 3.7.0"
+                    )
+                    wait = False
 
-        helm_cmd = delete(
-            helm_cmd, release_name, purge, disable_hook, wait, wait_timeout
-        )
-        changed = True
+            helm_cmd = delete(
+                helm_cmd, release_name, purge, disable_hook, wait, wait_timeout
+            )
+            changed = True
     elif release_state == "present":
-
         if chart_version is not None:
             helm_cmd += " --version=" + chart_version
 
@@ -956,7 +964,7 @@ def main():
         changed=changed,
         stdout=out,
         stderr=err,
-        status=get_release_status(module, release_name),
+        status=get_release_status(module, release_name, all_status=True),
         command=helm_cmd,
         **opt_result,
     )

tests/integration/targets/helm/library/helm_test_pending.py

@@ -0,0 +1,129 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+# Copyright: (c) 2023, Ansible Project
+# 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
+
+
+DOCUMENTATION = r"""
+---
+module: helm_test_pending
+short_description: created pending-install release
+author:
+  - Aubin Bikouo (@abikouo)
+requirements:
+  - "helm (https://github.com/helm/helm/releases)"
+description:
+  - This module is used to create a pending install release for integration testing
+  - The scope of this module is the integration testing of the kubernetes.core collection only.
+options:
+  binary_path:
+    description:
+      - The path of a helm binary to use.
+    required: true
+    type: path
+  chart_ref:
+    description:
+      - chart reference on chart repository (e.g. my-repo/my-chart-ref)
+    required: true
+    type: str
+  chart_release:
+    description:
+      - Release name to manage.
+    required: true
+    type: str
+  chart_release_namespace:
+    description:
+      - Kubernetes namespace where the chart should be installed.
+    required: true
+    type: str
+"""
+
+EXAMPLES = r"""
+"""
+
+RETURN = r"""
+"""
+
+import subprocess
+import json
+import time
+from ansible.module_utils.basic import AnsibleModule
+
+
+class HelmReleaseNotFoundError(Exception):
+    def __init__(self, message):
+        super().__init__(message)
+
+
+def create_pending_install_release(helm_binary, chart_ref, chart_release, namespace):
+    # create pending-install release
+    command = [
+        helm_binary,
+        "install",
+        chart_release,
+        chart_ref,
+        "--namespace",
+        namespace,
+        "--wait",
+    ]
+    proc = subprocess.Popen(command)
+    time.sleep(2)
+    proc.kill()
+    # ensure release status is pending-install
+    command = [
+        helm_binary,
+        "list",
+        "--all",
+        "--output=json",
+        "--namespace",
+        namespace,
+        "--filter",
+        chart_release,
+    ]
+    cmd = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    out, err = cmd.communicate()
+
+    data = json.loads(out)
+    if not data:
+        error = "Release %s not found." % chart_release
+        raise HelmReleaseNotFoundError(message=error)
+    return data[0]["status"] == "pending-install", data[0]["status"]
+
+
+def main():
+    module = AnsibleModule(
+        argument_spec=dict(
+            binary_path=dict(type="path", required=True),
+            chart_ref=dict(type="str", required=True),
+            chart_release=dict(type="str", required=True),
+            chart_release_namespace=dict(type="str", required=True),
+        ),
+    )
+
+    params = dict(
+        helm_binary=module.params.get("binary_path"),
+        chart_release=module.params.get("chart_release"),
+        chart_ref=module.params.get("chart_ref"),
+        namespace=module.params.get("chart_release_namespace"),
+    )
+
+    try:
+        result, status = create_pending_install_release(**params)
+        if not result:
+            module.fail_json(
+                msg="unable to create pending-install release, current status is %s"
+                % status
+            )
+        module.exit_json(changed=True, msg="Release created with status '%s'" % status)
+    except HelmReleaseNotFoundError as err:
+        module.fail_json(
+            msg="Error while trying to create pending-install release due to '%s'" % err
+        )
+
+
+if __name__ == "__main__":
+    main()

tests/integration/targets/helm/tasks/test_helm_uninstall.yml

@@ -7,6 +7,7 @@
 - vars:
     chart_source: "https://github.com/kubernetes/kube-state-metrics/releases/download/kube-state-metrics-helm-chart-2.13.3/kube-state-metrics-2.13.3.tgz"
     chart_name: "test-wait-uninstall"
+    chart_name_pending: "test-uninstall-pending-release"
     helm_namespace: "{{ test_namespace[1] }}"
   block:
 
@@ -64,6 +65,36 @@
       wait: yes
     register: uninstall
 
+  # Test uninstall chart release with 'pending-install' status
+  - name: Create chart release with 'pending-install' status
+    helm_test_pending:
+      binary_path: "{{ helm_binary }}"
+      chart_ref: "{{ chart_source }}"
+      chart_release: "{{ chart_name_pending }}"
+      chart_release_namespace: "{{ helm_namespace }}"
+
+  - name: Uninstall chart release with 'pending-install' status
+    helm:
+      binary_path: "{{ helm_binary }}"
+      release_name: "{{ chart_name_pending }}"
+      namespace: "{{ helm_namespace }}"
+      release_state: absent
+    register: _uninstall
+
+  - name: Get Helm release details
+    helm_info:
+      binary_path: "{{ helm_binary }}"
+      release_namespace: "{{ helm_namespace }}"
+      release_state: pending
+      release_name: "{{ chart_name_pending }}"
+    register: _info
+
+  - name: assert release does not exist anymore
+    assert:
+      that:
+      - _uninstall is changed
+      - _info.status is undefined
+
   always:
   - name: Delete temp directory
     file: