feat: add helm execution gradle task: HelmUninstallChartTask (#375)

Signed-off-by: Jeromy Cannon <[email protected]>

fullstack-examples/build.gradle.kts

@@ -15,6 +15,7 @@
  */
 
 import com.hedera.fullstack.gradle.plugin.HelmInstallChartTask
+import com.hedera.fullstack.gradle.plugin.HelmUninstallChartTask
 
 plugins {
     id("java")
@@ -46,9 +47,12 @@ tasks.register<HelmInstallChartTask>("helmInstallNginxChart") {
     chart.set("oci://ghcr.io/nginxinc/charts/nginx-ingress")
 }
 
-// TODO: task register helmUninstallNginxChart
+tasks.register<HelmUninstallChartTask>("helmUninstallNginxChart") {
+    namespace.set("nginx-ns")
+    release.set("nginx-release")
+}
 
 tasks.check {
     dependsOn("helmInstallNginxChart")
-    // TODO: depends on helmUninstallNginxChart
+    dependsOn("helmUninstallNginxChart")
 }

fullstack-gradle-plugin/src/main/java/com/hedera/fullstack/gradle/plugin/HelmUninstallChartTask.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2023 Hedera Hashgraph, LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.hedera.fullstack.gradle.plugin;
+
+import com.hedera.fullstack.helm.client.HelmClient;
+import com.hedera.fullstack.helm.client.HelmClientBuilder;
+import org.gradle.api.DefaultTask;
+import org.gradle.api.provider.Property;
+import org.gradle.api.tasks.Input;
+import org.gradle.api.tasks.Optional;
+import org.gradle.api.tasks.TaskAction;
+import org.gradle.api.tasks.options.Option;
+
+public abstract class HelmUninstallChartTask extends DefaultTask {
+    @Input
+    @Optional
+    @Option(option = "namespace", description = "The namespace to use when installing the chart")
+    public abstract Property<String> getNamespace();
+
+    @Input
+    @Option(option = "release", description = "The name of the release to install")
+    public abstract Property<String> getRelease();
+
+    @TaskAction
+    void uninstallChart() {
+        HelmClientBuilder helmClientBuilder = HelmClient.builder();
+        if (getNamespace().isPresent()) {
+            helmClientBuilder.defaultNamespace(getNamespace().get());
+        }
+        HelmClient helmClient = helmClientBuilder.build();
+        try {
+            helmClient.uninstallChart(getRelease().getOrNull());
+        } catch (Exception e) {
+            this.getProject()
+                    .getLogger()
+                    .error(
+                            "HelmUninstallChartTask.uninstallChart() An ERROR occurred while uninstalling the chart: ",
+                            e);
+            throw e;
+        }
+    }
+}

fullstack-gradle-plugin/src/test/java/com/hedera/fullstack/gradle/plugin/HelmInstallChartTaskTest.java

@@ -98,8 +98,13 @@ void testHelmInstallChartTaskSimple() {
                     });
             assertEquals(RELEASE_NAME, helmInstallChartTask.getRelease().get());
             helmInstallChartTask.installChart();
+            HelmUninstallChartTask helmUninstallChartTask = project.getTasks()
+                    .create("helmUninstallChart", HelmUninstallChartTask.class, task -> {
+                        task.getNamespace().set("simple-test");
+                        task.getRelease().set(RELEASE_NAME);
+                    });
+            helmUninstallChartTask.uninstallChart();
         } finally {
-            suppressExceptions(() -> helmClient.uninstallChart(RELEASE_NAME));
             suppressExceptions(() -> helmClient.removeRepository(REPOSITORY));
         }
     }

fullstack-gradle-plugin/src/test/java/com/hedera/fullstack/gradle/plugin/HelmUninstallChartTaskTest.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2023 Hedera Hashgraph, LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.hedera.fullstack.gradle.plugin;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import com.hedera.fullstack.helm.client.HelmExecutionException;
+import org.gradle.api.Project;
+import org.gradle.testfixtures.ProjectBuilder;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+class HelmUninstallChartTaskTest {
+    private static Project project;
+
+    @BeforeAll
+    static void beforeAll() {
+        project = ProjectBuilder.builder().build();
+    }
+
+    @Test
+    @DisplayName("test an error is thrown when the chart is not found")
+    void testErrorThrownWhenChartNotFound() {
+        assertThrows(HelmExecutionException.class, () -> {
+            HelmUninstallChartTask helmUninstallChartTask = project.getTasks()
+                    .create("helmUninstallNonExistingChartChart", HelmUninstallChartTask.class, task -> {
+                        task.getNamespace().set("test-failure");
+                        task.getRelease().set("not-a-release");
+                    });
+            helmUninstallChartTask.uninstallChart();
+        });
+    }
+}