First ReplicationIT test for new project and change

Test end-to-end that a new project and a new change are propagated
to the replicated repository.

Change-Id: Iea4170aa881757c7e29bc6237fe4c230da8ae0ec

src/main/java/com/googlesource/gerrit/plugins/replication/AutoReloadConfigDecorator.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/AutoReloadConfigDecorator.java b/src/main/java/com/googlesource/gerrit/plugins/replication/AutoReloadConfigDecorator.java
index 1e74d9a..f30efc8 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/AutoReloadConfigDecorator.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/AutoReloadConfigDecorator.java
@@ -13,6 +13,7 @@
 // limitations under the License.
 package com.googlesource.gerrit.plugins.replication;
 
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.flogger.FluentLogger;
 import com.google.gerrit.common.FileUtil;
 import com.google.gerrit.extensions.annotations.PluginData;
@@ -75,15 +76,25 @@
   }
 
   private void reloadIfNeeded() {
-    if (isAutoReload()) {
+    reload(false);
+  }
+
+  @VisibleForTesting
+  public void forceReload() {
+    reload(true);
+  }
+
+  private void reload(boolean force) {
+    if (force || isAutoReload()) {
       ReplicationQueue queue = replicationQueue.get();
 
       long lastModified = getLastModified(currentConfig);
       try {
-        if (lastModified > currentConfigTs
-            && lastModified > lastFailedConfigTs
-            && queue.isRunning()
-            && !queue.isReplaying()) {
+        if (force
+            || (lastModified > currentConfigTs
+                && lastModified > lastFailedConfigTs
+                && queue.isRunning()
+                && !queue.isReplaying())) {
           queue.stop();
           currentConfig = loadConfig();
           currentConfigTs = lastModified;

src/test/java/com/googlesource/gerrit/plugins/replication/ReplicationIT.java

diff --git a/src/test/java/com/googlesource/gerrit/plugins/replication/ReplicationIT.java b/src/test/java/com/googlesource/gerrit/plugins/replication/ReplicationIT.java
new file mode 100644
index 0000000..1e22c3f
--- /dev/null
+++ b/src/test/java/com/googlesource/gerrit/plugins/replication/ReplicationIT.java
@@ -0,0 +1,131 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// 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.googlesource.gerrit.plugins.replication;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.google.common.base.Stopwatch;
+import com.google.gerrit.acceptance.LightweightPluginDaemonTest;
+import com.google.gerrit.acceptance.PushOneCommit.Result;
+import com.google.gerrit.acceptance.TestPlugin;
+import com.google.gerrit.acceptance.UseLocalDisk;
+import com.google.gerrit.extensions.common.ProjectInfo;
+import com.google.gerrit.reviewdb.client.Project;
+import com.google.gerrit.server.config.SitePaths;
+import com.google.inject.Inject;
+import java.io.IOException;
+import java.nio.file.Path;
+import java.time.Duration;
+import java.util.concurrent.TimeUnit;
+import java.util.function.Supplier;
+import org.eclipse.jgit.lib.Ref;
+import org.eclipse.jgit.lib.Repository;
+import org.eclipse.jgit.revwalk.RevCommit;
+import org.eclipse.jgit.storage.file.FileBasedConfig;
+import org.eclipse.jgit.util.FS;
+import org.junit.Test;
+
+@UseLocalDisk
+@TestPlugin(
+    name = "replication",
+    sysModule = "com.googlesource.gerrit.plugins.replication.ReplicationModule")
+public class ReplicationIT extends LightweightPluginDaemonTest {
+  private static final int TEST_REPLICATION_DELAY = 1;
+  private static final Duration TEST_TIMEMOUT = Duration.ofSeconds(TEST_REPLICATION_DELAY * 10);
+
+  @Inject private SitePaths sitePaths;
+  private Path gitPath;
+  private FileBasedConfig config;
+
+  @Override
+  public void setUpTestPlugin() throws Exception {
+    config =
+        new FileBasedConfig(sitePaths.etc_dir.resolve("replication.config").toFile(), FS.DETECTED);
+    config.save();
+
+    gitPath = sitePaths.site_path.resolve("git");
+
+    super.setUpTestPlugin();
+  }
+
+  @Test
+  public void shouldReplicateNewProject() throws Exception {
+    setReplicationDestination("foo", "replica");
+
+    Project.NameKey sourceProject = createProject("foo");
+    waitUntil(() -> gitPath.resolve(sourceProject + "replica.git").toFile().isDirectory());
+
+    ProjectInfo replicaProject = gApi.projects().name(sourceProject + "replica").get();
+    assertThat(replicaProject).isNotNull();
+  }
+
+  @Test
+  public void shouldReplicateNewBranch() throws Exception {
+    setReplicationDestination("foo", "replica");
+
+    Project.NameKey targetProject = createProject("projectreplica");
+
+    Result pushResult = createChange();
+    RevCommit sourceCommit = pushResult.getCommit();
+    String sourceRef = pushResult.getPatchSet().getRefName();
+
+    waitUntil(() -> getRef(getRepo(targetProject), sourceRef) != null);
+
+    Ref targetBranchRef = getRef(getRepo(targetProject), sourceRef);
+    assertThat(targetBranchRef).isNotNull();
+    assertThat(targetBranchRef.getObjectId()).isEqualTo(sourceCommit.getId());
+  }
+
+  private Repository getRepo(Project.NameKey targetProject) {
+    try {
+      return repoManager.openRepository(targetProject);
+    } catch (Exception e) {
+      e.printStackTrace();
+      return null;
+    }
+  }
+
+  private Ref getRef(Repository repo, String branchName) {
+    try {
+      return repo.getRefDatabase().getRef(branchName);
+    } catch (IOException e) {
+      e.printStackTrace();
+      return null;
+    }
+  }
+
+  private void setReplicationDestination(String remoteName, String replicaSuffix)
+      throws IOException {
+    config.setString(
+        "remote",
+        remoteName,
+        "url",
+        gitPath.resolve("${name}" + replicaSuffix + ".git").toString());
+    config.setInt("remote", remoteName, "replicationDelay", TEST_REPLICATION_DELAY);
+    config.save();
+    reloadConfig();
+  }
+
+  private void waitUntil(Supplier<Boolean> waitCondition) throws InterruptedException {
+    Stopwatch stopwatch = Stopwatch.createStarted();
+    while (!waitCondition.get() && stopwatch.elapsed().compareTo(TEST_TIMEMOUT) < 0) {
+      TimeUnit.SECONDS.sleep(1);
+    }
+  }
+
+  private void reloadConfig() {
+    plugin.getSysInjector().getInstance(AutoReloadConfigDecorator.class).forceReload();
+  }
+}