From bf3cc134eb2d68ec70f41c63587c312393b0aa22 Mon Sep 17 00:00:00 2001
From: Matteo Silvestri <matteosilv@gmail.com>
Date: Thu, 1 Sep 2022 15:13:31 +0200
Subject: [PATCH] add changeset

Signed-off-by: Matteo Silvestri <matteosilv@gmail.com>
---
 .changeset/late-turtles-listen.md             | 51 +++++++++++++++++++
 .../util/KubernetesContainerRunner.test.ts    |  2 +-
 2 files changed, 52 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/late-turtles-listen.md

diff --git a/.changeset/late-turtles-listen.md b/.changeset/late-turtles-listen.md
new file mode 100644
index 0000000000..117737a064
--- /dev/null
+++ b/.changeset/late-turtles-listen.md
@@ -0,0 +1,51 @@
+---
+'@backstage/backend-common': patch
+---
+
+Implemented KubernetesContainerRunner: a ContainerRunner implementation that leverages Jobs on a kubernetes cluster
+
+```ts
+const kubeConfig = new KubeConfig();
+kubeConfig.loadFromDefault();
+
+const options: KubernetesContainerRunnerOptions = {
+  kubeConfig,
+  // namespace where Jobs will be created
+  namespace: 'default',
+  // Jobs name will be prefixed with this name
+  name: 'my-runner',
+  // An existing Kubernetes volume that will be used
+  // as base for mounts
+  mountBase: {
+    volumeName: 'workdir',
+    // Every mount must start with the base path
+    // see example below
+    basePath: '/workdir',
+  },
+  // Define a Pod template for the Jobs. It has to include
+  // a volume definition named as the mountBase volumeName
+  podTemplate: {
+    spec: {
+      containers: [],
+      volumes: [
+        {
+          name: 'workdir',
+          persistentVolumeClaim: {
+            claimName: 'workdir-claim',
+          },
+        },
+      ],
+    },
+  },
+};
+const containerRunner = new KubernetesContainerRunner(options);
+
+const runOptions: RunContainerOptions = {
+  imageName: 'golang:1.17',
+  args: ['echo', 'hello world'],
+  mountDirs: {
+    '/workdir/app': '/app',
+  },
+};
+containerRunner.runContainer(runOptions);
+```
diff --git a/packages/backend-common/src/util/KubernetesContainerRunner.test.ts b/packages/backend-common/src/util/KubernetesContainerRunner.test.ts
index d914bc7742..9ac5e244fd 100644
--- a/packages/backend-common/src/util/KubernetesContainerRunner.test.ts
+++ b/packages/backend-common/src/util/KubernetesContainerRunner.test.ts
@@ -109,7 +109,7 @@ describeIfKubernetes('KubernetesContainerRunner', () => {
       args: ['echo', 'hello world'],
       logStream,
       mountDirs: {
-        '/notWorkdir/app': '/app',
+        hostdir: '/app',
       },
     };
     await expect(containerRunner.runContainer(runOptions)).rejects.toThrow(