Integration test

src/test/java/com/microsoft/jenkins/kubernetes/integration/IntegrationTest.java

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+/*
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ */
+
+package com.microsoft.jenkins.kubernetes.integration;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
+import com.microsoft.jenkins.azurecommons.remote.SSHClient;
+import com.microsoft.jenkins.kubernetes.KubernetesClientWrapper;
+import hudson.EnvVars;
+import hudson.FilePath;
+import hudson.Launcher;
+import hudson.model.Run;
+import hudson.model.TaskListener;
+import hudson.security.ACL;
+import io.fabric8.kubernetes.api.model.extensions.Deployment;
+import io.fabric8.kubernetes.client.KubernetesClient;
+import io.fabric8.kubernetes.client.KubernetesClientException;
+import io.fabric8.kubernetes.client.Watch;
+import io.fabric8.kubernetes.client.Watcher;
+import org.acegisecurity.context.SecurityContextHolder;
+import org.apache.commons.io.FileUtils;
+import org.apache.commons.lang.StringUtils;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.ClassRule;
+import org.junit.Rule;
+import org.junit.rules.TemporaryFolder;
+import org.junit.rules.Timeout;
+import org.jvnet.hudson.test.JenkinsRule;
+import org.mockito.invocation.InvocationOnMock;
+import org.mockito.stubbing.Answer;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.OutputStream;
+import java.io.PrintWriter;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import static com.microsoft.jenkins.kubernetes.integration.TestHelpers.loadProperty;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public abstract class IntegrationTest {
+    private static final Logger LOGGER = Logger.getLogger(IntegrationTest.class.getName());
+
+    private static final ObjectMapper JSON = new ObjectMapper();
+    private static final ObjectMapper YAML = new ObjectMapper(new YAMLFactory());
+
+    @ClassRule
+    public static JenkinsRule j = new JenkinsRule() {{
+        // disable the default 180s timeout
+        timeout = -1;
+    }};
+
+    @Rule
+    public TemporaryFolder tmpFolder = new TemporaryFolder();
+
+    @Rule
+    public Timeout globalTimeout = new Timeout(30, TimeUnit.MINUTES);
+
+    public final String masterHost;
+    public final int port;
+    public final String adminUser;
+    public final String privateKeyPath;
+
+    public final String dockerRegistry;
+    public final String dockerUsername;
+    public final String dockerPassword;
+    public final String dockerRepository;
+
+    public File workspaceKubeConfig;
+
+    public JsonNode config;
+
+    public String serverUrl;
+    public String certificateAuthorityData;
+    public String clientCertificateData;
+    public String clientKeyData;
+
+    protected Run run;
+    protected FilePath workspace;
+    protected Launcher launcher;
+    protected TaskListener taskListener;
+
+    protected EnvVars envVars = new EnvVars();
+
+    public IntegrationTest() {
+        String host = loadProperty("KUBERNETES_CD_MASTER_HOST");
+        String[] parts = host.split(",", 2);
+        masterHost = StringUtils.trimToNull(parts[0]);
+        port = parts.length == 2 ? Integer.parseInt(StringUtils.trimToNull(parts[1])) : 22;
+        adminUser = loadProperty("KUBERNETES_CD_ADMIN_USER", "azureuser");
+        privateKeyPath = loadProperty("KUBERNETES_CD_KEY_PATH", new File(System.getProperty("user.home"), ".ssh/id_rsa").getAbsolutePath());
+
+        dockerRegistry = loadProperty("KUBERNETES_CD_DOCKER_REGISTRY");
+        dockerUsername = loadProperty("KUBERNETES_CD_DOCKER_USERNAME");
+        dockerPassword = loadProperty("KUBERNETES_CD_DOCKER_PASSWORD");
+        dockerRepository = loadProperty("KUBERNETES_CD_DOCKER_REPOSITORY");
+
+        Assert.assertTrue("Master host is not configured in environment", StringUtils.isNotEmpty(masterHost));
+    }
+
+    @Before
+    public void setup() throws Exception {
+        SecurityContextHolder.getContext().setAuthentication(ACL.SYSTEM);
+
+        SSHClient client = new SSHClient(masterHost, port, adminUser, null, FileUtils.readFileToString(new File(privateKeyPath)));
+        workspaceKubeConfig = tmpFolder.newFile();
+        try (SSHClient connected = client.connect()) {
+            try (OutputStream os = new FileOutputStream(workspaceKubeConfig)) {
+                connected.copyFrom(".kube/config", os);
+            }
+        }
+        try {
+            config = YAML.readTree(workspaceKubeConfig);
+        } catch (Exception e) {
+            config = JSON.readTree(workspaceKubeConfig);
+        }
+
+        serverUrl = config.at("/clusters/0/cluster/server").asText();
+        certificateAuthorityData = config.at("/clusters/0/cluster/certificate-authority-data").asText();
+        clientCertificateData = config.at("/users/0/user/client-certificate-data").asText();
+        clientKeyData = config.at("/users/0/user/client-key-data").asText();
+
+        workspace = new FilePath(tmpFolder.getRoot());
+
+        run = mock(Run.class);
+        launcher = mock(Launcher.class);
+
+        taskListener = mock(TaskListener.class);
+        when(taskListener.getLogger()).thenReturn(System.err);
+        doAnswer(new Answer<PrintWriter>() {
+            @Override
+            public PrintWriter answer(InvocationOnMock invocationOnMock) throws Throwable {
+                String msg = invocationOnMock.getArgument(0);
+                System.err.print(msg);
+                return new PrintWriter(System.err);
+            }
+        }).when(taskListener).error(any(String.class));
+        when(run.getDisplayName()).thenReturn("acs-test-run");
+        when(run.getEnvironment(any(TaskListener.class))).thenReturn(envVars);
+    }
+
+    protected class DeploymentWatcher implements AutoCloseable {
+        final String name;
+        final Watch deploymentWatch;
+        final CountDownLatch latch;
+
+        public DeploymentWatcher(String namespace, String name) {
+            this.name = name;
+            latch = new CountDownLatch(1);
+            KubernetesClient client = new KubernetesClientWrapper(workspaceKubeConfig.getAbsolutePath()).getClient();
+            deploymentWatch =
+                    client.extensions()
+                            .deployments()
+                            .inNamespace(namespace)
+                            .withName(name)
+                            .watch(new Watcher<Deployment>() {
+                                @Override
+                                public void eventReceived(Action action, Deployment deployment) {
+                                    Integer availableReplica = deployment.getStatus().getAvailableReplicas();
+                                    if (availableReplica != null && availableReplica > 0) {
+                                        latch.countDown();
+                                    }
+                                }
+
+                                @Override
+                                public void onClose(KubernetesClientException e) {
+                                    if (e != null) {
+                                        LOGGER.log(Level.SEVERE, null, e);
+                                        throw e;
+                                    }
+                                }
+                            });
+        }
+
+        public void waitReady(long timeout, TimeUnit tu) throws InterruptedException {
+            if (!latch.await(timeout, tu)) {
+                Assert.fail("Timeout while waiting for the deployment " + name + " to become ready");
+            }
+        }
+
+        @Override
+        public void close() {
+            if (deploymentWatch != null) {
+                deploymentWatch.close();
+            }
+        }
+    }
+}