Merge "Added a ls-members command to the ssh daemon."

gerrit-sshd/src/main/java/com/google/gerrit/sshd/commands/DefaultCommandModule.java

@@ -39,6 +39,7 @@ public class DefaultCommandModule extends CommandModule {
     command(gerrit, BanCommitCommand.class);
     command(gerrit, FlushCaches.class);
     command(gerrit, ListProjectsCommand.class);
+    command(gerrit, ListMembersCommand.class);
     command(gerrit, ListGroupsCommand.class);
     command(gerrit, LsUserRefs.class);
     command(gerrit, Query.class);

gerrit-sshd/src/main/java/com/google/gerrit/sshd/commands/ListMembersCommand.java

@@ -0,0 +1,116 @@
+// Copyright (C) 2013 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.google.gerrit.sshd.commands;
+
+import com.google.common.base.Objects;
+import com.google.common.base.Strings;
+import com.google.gerrit.extensions.restapi.MethodNotAllowedException;
+import com.google.gerrit.reviewdb.client.AccountGroup;
+import com.google.gerrit.server.account.AccountCache;
+import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.GroupCache;
+import com.google.gerrit.server.account.GroupDetailFactory.Factory;
+import com.google.gerrit.server.group.ListMembers;
+import com.google.gerrit.server.ioutil.ColumnFormatter;
+import com.google.gerrit.sshd.BaseCommand;
+import com.google.gerrit.sshd.CommandMetaData;
+import com.google.gwtorm.server.OrmException;
+
+import org.apache.sshd.server.Environment;
+import org.kohsuke.args4j.Argument;
+
+import java.io.PrintWriter;
+import java.util.List;
+
+import javax.inject.Inject;
+
+/**
+ * Implements a command that allows the user to see the members of a group.
+ */
+@CommandMetaData(name = "ls-members", descr = "Lists the members of a given group")
+public class ListMembersCommand extends BaseCommand {
+  @Inject
+  ListMembersCommandImpl impl;
+
+  @Override
+  public void start(Environment env) {
+    startThread(new CommandRunnable() {
+      @Override
+      public void run() throws Exception {
+        parseCommandLine(impl);
+        final PrintWriter stdout = toPrintWriter(out);
+        try {
+          impl.display(stdout);
+        } finally {
+          stdout.flush();
+        }
+      }
+    });
+  }
+
+  private static class ListMembersCommandImpl extends ListMembers {
+    @Argument(required = true, usage = "the name of the group", metaVar = "GROUPNAME")
+    private String name;
+
+    private final GroupCache groupCache;
+
+    @Inject
+    protected ListMembersCommandImpl(GroupCache groupCache,
+        Factory groupDetailFactory,
+        AccountInfo.Loader.Factory accountLoaderFactory,
+        AccountCache accountCache) {
+      super(groupCache, groupDetailFactory, accountLoaderFactory);
+      this.groupCache = groupCache;
+    }
+
+    void display(PrintWriter writer) throws UnloggedFailure, OrmException {
+      AccountGroup group = groupCache.get(new AccountGroup.NameKey(name));
+      String errorText = "Group not found or not visible\n";
+
+      if (group == null) {
+        writer.write(errorText);
+        writer.flush();
+        return;
+      }
+
+      try {
+        List<AccountInfo> members = apply(group.getGroupUUID());
+        ColumnFormatter formatter = new ColumnFormatter(writer, '\t');
+        formatter.addColumn("id");
+        formatter.addColumn("username");
+        formatter.addColumn("full name");
+        formatter.addColumn("email");
+        formatter.nextLine();
+        for (AccountInfo member : members) {
+          if (member == null) {
+            continue;
+          }
+
+          formatter.addColumn(member._id.toString());
+          formatter.addColumn(Objects.firstNonNull(member.username, "n/a"));
+          formatter.addColumn(Objects.firstNonNull(
+              Strings.emptyToNull(member.name), "n/a"));
+          formatter.addColumn(Objects.firstNonNull(member.email, "n/a"));
+          formatter.nextLine();
+        }
+
+        formatter.finish();
+      } catch (MethodNotAllowedException e) {
+        writer.write(errorText);
+        writer.flush();
+      }
+    }
+  }
+}