feat(k8s): support immutable build success

garden-service/src/plugins/kubernetes/container/build.ts

@@ -42,6 +42,7 @@ import { getSystemNamespace, getAppNamespace } from "../namespace"
 import { dedent } from "../../../util/string"
 import chalk = require("chalk")
 import { loadImageToMicrok8s, getMicrok8sImageStatus } from "../local/microk8s"
+import { RunResult } from "../../../types/plugin/base"
 
 const kanikoImage = "gcr.io/kaniko-project/executor:debug-v0.21.0"
 
@@ -352,7 +353,7 @@ const remoteBuild: BuildHandler = async (params) => {
     const buildRes = await runKaniko({ provider, namespace, log, module, args, outputStream: stdout })
     buildLog = buildRes.log
 
-    if (!buildRes.success) {
+    if (kanikoBuildFailed(buildRes)) {
       throw new BuildError(`Failed building module ${chalk.bold(module.name)}:\n\n${buildLog}`, { buildLog })
     }
   }
@@ -380,6 +381,10 @@ export interface BuilderExecParams {
   stderr?: Writable
 }
 
+export function kanikoBuildFailed(buildRes: RunResult) {
+  return !buildRes.success && !buildRes.log.includes("cannot be overwritten because the repository is immutable.")
+}
+
 const buildHandlers: { [mode in ContainerBuildMode]: BuildHandler } = {
   "local-docker": localBuild,
   "cluster-docker": remoteBuild,

garden-service/test/unit/src/plugins/kubernetes/container/build.ts

@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2018-2020 Garden Technologies, Inc. <[email protected]>
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+import { kanikoBuildFailed } from "../../../../../../src/plugins/kubernetes/container/build"
+import { expect } from "chai"
+
+describe("kaniko build", () => {
+  it("should return as successful when immutable tag already exists in destination", () => {
+    const errorMessage = `error pushing image: failed to push to destination dockerhub.com/garden/backend:v-1234567: TAG_INVALID: The image tag 'v-1234567' already exists in the 'garden/backend' repository and cannot be overwritten because the repository is immutable.`
+
+    expect(
+      kanikoBuildFailed({
+        moduleName: "foo",
+        command: [],
+        version: "",
+        startedAt: new Date(),
+        completedAt: new Date(),
+        success: false,
+        log: errorMessage,
+      })
+    ).to.be.false
+  })
+
+  it("should return as failure when other error messages are present", () => {
+    const errorMessage = "error pushing"
+
+    expect(
+      kanikoBuildFailed({
+        moduleName: "foo",
+        command: [],
+        version: "",
+        startedAt: new Date(),
+        completedAt: new Date(),
+        success: false,
+        log: errorMessage,
+      })
+    ).to.be.true
+  })
+
+  it("should return as success when the build succeeded", () => {
+    expect(
+      kanikoBuildFailed({
+        moduleName: "foo",
+        command: [],
+        version: "",
+        startedAt: new Date(),
+        completedAt: new Date(),
+        success: true,
+        log: "",
+      })
+    ).to.be.false
+  })
+})