Add ChangeApi.get() method

Change-Id: I9862a2475781a37c6b964d2a977b3d187d44cf09

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/api/change/ChangeIT.java

@@ -16,6 +16,7 @@ package com.google.gerrit.acceptance.api.change;
 
 import static com.google.gerrit.acceptance.GitUtil.cloneProject;
 import static com.google.gerrit.acceptance.GitUtil.createProject;
+import static org.junit.Assert.assertEquals;
 
 import com.google.gerrit.acceptance.AbstractDaemonTest;
 import com.google.gerrit.acceptance.AcceptanceTestRequestScope;
@@ -25,6 +26,9 @@ import com.google.gerrit.acceptance.TestAccount;
 import com.google.gerrit.extensions.api.GerritApi;
 import com.google.gerrit.extensions.api.changes.AddReviewerInput;
 import com.google.gerrit.extensions.api.changes.ReviewInput;
+import com.google.gerrit.extensions.common.ChangeInfo;
+import com.google.gerrit.extensions.common.ChangeStatus;
+import com.google.gerrit.extensions.common.ListChangesOption;
 import com.google.gerrit.extensions.restapi.ResourceConflictException;
 import com.google.gerrit.extensions.restapi.RestApiException;
 import com.google.gerrit.reviewdb.client.Project;
@@ -41,6 +45,7 @@ import org.junit.Before;
 import org.junit.Test;
 
 import java.io.IOException;
+import java.util.EnumSet;
 
 public class ChangeIT extends AbstractDaemonTest {
 
@@ -81,6 +86,25 @@ public class ChangeIT extends AbstractDaemonTest {
     db.close();
   }
 
+  @Test
+  public void get() throws GitAPIException,
+      IOException, RestApiException {
+    PushOneCommit.Result r = createChange();
+    String triplet = "p~master~" + r.getChangeId();
+    ChangeInfo c =
+        gApi.changes()
+            .id(triplet)
+            .get(EnumSet.noneOf(ListChangesOption.class));
+    assertEquals(triplet, c.id);
+    assertEquals("p", c.project);
+    assertEquals("master", c.branch);
+    assertEquals(ChangeStatus.NEW, c.status);
+    assertEquals("test commit", c.subject);
+    assertEquals(true, c.mergeable);
+    assertEquals(r.getChangeId(), c.changeId);
+    assertEquals(c.created, c.updated);
+  }
+
   @Test
   public void abandon() throws GitAPIException,
       IOException, RestApiException {

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/api/changes/ChangeApi.java

@@ -14,8 +14,12 @@
 
 package com.google.gerrit.extensions.api.changes;
 
+import com.google.gerrit.extensions.common.ChangeInfo;
+import com.google.gerrit.extensions.common.ListChangesOption;
 import com.google.gerrit.extensions.restapi.RestApiException;
 
+import java.util.EnumSet;
+
 public interface ChangeApi {
   String id();
 
@@ -34,4 +38,6 @@ public interface ChangeApi {
 
   void addReviewer(AddReviewerInput in) throws RestApiException;
   void addReviewer(String in) throws RestApiException;
+
+  ChangeInfo get(EnumSet<ListChangesOption> options) throws RestApiException;
 }

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/common/AccountInfo.java

@@ -0,0 +1,22 @@
+// Copyright (C) 2014 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.extensions.common;
+
+public class AccountInfo {
+  public Integer _accountId;
+  public String name;
+  public String email;
+  public String username;
+}

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/common/ActionInfo.java

@@ -12,15 +12,15 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package com.google.gerrit.server.actions;
+package com.google.gerrit.extensions.common;
 
 import com.google.gerrit.extensions.webui.UiAction;
 
 public class ActionInfo {
-  String method;
-  String label;
-  String title;
-  Boolean enabled;
+  public String method;
+  public String label;
+  public String title;
+  public Boolean enabled;
 
   public ActionInfo(UiAction.Description d) {
     method = d.getMethod();

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/common/ApprovalInfo.java

@@ -0,0 +1,22 @@
+// Copyright (C) 2014 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.extensions.common;
+
+import java.sql.Timestamp;
+
+public class ApprovalInfo extends AccountInfo {
+  public Integer value;
+  public Timestamp date;
+}

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/common/ChangeInfo.java

@@ -0,0 +1,42 @@
+// Copyright (C) 2014 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.extensions.common;
+
+import java.sql.Timestamp;
+import java.util.Collection;
+import java.util.Map;
+
+public class ChangeInfo {
+  public String id;
+  public String project;
+  public String branch;
+  public String topic;
+  public String changeId;
+  public String subject;
+  public ChangeStatus status;
+  public Timestamp created;
+  public Timestamp updated;
+  public Boolean starred;
+  public Boolean reviewed;
+  public Boolean mergeable;
+  public Integer insertions;
+  public Integer deletions;
+  public AccountInfo owner;
+  public String currentRevision;
+  public Map<String, ActionInfo> actions;
+  public Map<String, LabelInfo> labels;
+  public Collection<ChangeMessageInfo> messages;
+  public Map<String, RevisionInfo> revisions;
+}

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/common/ChangeMessageInfo.java

@@ -0,0 +1,25 @@
+// Copyright (C) 2014 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.extensions.common;
+
+import java.sql.Timestamp;
+
+public class ChangeMessageInfo {
+  public String id;
+  public AccountInfo author;
+  public Timestamp date;
+  public String message;
+  public Integer _revisionNumber;
+}

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/common/CommitInfo.java

@@ -0,0 +1,26 @@
+// Copyright (C) 2014 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.extensions.common;
+
+import java.util.List;
+
+public class CommitInfo {
+  public String commit;
+  public List<CommitInfo> parents;
+  public GitPerson author;
+  public GitPerson committer;
+  public String subject;
+  public String message;
+}

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/common/FetchInfo.java

@@ -0,0 +1,28 @@
+// Copyright (C) 2014 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.extensions.common;
+
+import java.util.Map;
+
+public class FetchInfo {
+  public String url;
+  public String ref;
+  public Map<String, String> commands;
+
+  public FetchInfo(String url, String ref) {
+    this.url = url;
+    this.ref = ref;
+  }
+}

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/common/FileInfo.java

@@ -0,0 +1,23 @@
+// Copyright (C) 2014 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.extensions.common;
+
+public class FileInfo {
+  public Character status;
+  public Boolean binary;
+  public String oldPath;
+  public Integer linesInserted;
+  public Integer linesDeleted;
+}

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/common/GitPerson.java

@@ -0,0 +1,24 @@
+// Copyright (C) 2014 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.extensions.common;
+
+import java.sql.Timestamp;
+
+public class GitPerson {
+  public String name;
+  public String email;
+  public Timestamp date;
+  public int tz;
+}

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/common/LabelInfo.java

@@ -0,0 +1,29 @@
+// Copyright (C) 2014 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.extensions.common;
+
+import java.util.List;
+import java.util.Map;
+
+public class LabelInfo {
+  public AccountInfo approved;
+  public AccountInfo rejected;
+  public AccountInfo recommended;
+  public AccountInfo disliked;
+  public List<ApprovalInfo> all;
+  public Map<String, String> values;
+  public Short value;
+  public Boolean optional;
+}

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/common/RevisionInfo.java

@@ -0,0 +1,28 @@
+// Copyright (C) 2014 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.extensions.common;
+
+import java.util.Map;
+
+public class RevisionInfo {
+  public transient boolean isCurrent;
+  public Boolean draft;
+  public Boolean hasDraftComments;
+  public int _number;
+  public Map<String, FetchInfo> fetch;
+  public CommitInfo commit;
+  public Map<String, FileInfo> files;
+  public Map<String, ActionInfo> actions;
+}

gerrit-server/src/main/java/com/google/gerrit/server/api/changes/ChangeApiImpl.java

@@ -22,9 +22,12 @@ import com.google.gerrit.extensions.api.changes.Changes;
 import com.google.gerrit.extensions.api.changes.RestoreInput;
 import com.google.gerrit.extensions.api.changes.RevertInput;
 import com.google.gerrit.extensions.api.changes.RevisionApi;
+import com.google.gerrit.extensions.common.ChangeInfo;
+import com.google.gerrit.extensions.common.ListChangesOption;
 import com.google.gerrit.extensions.restapi.IdString;
 import com.google.gerrit.extensions.restapi.RestApiException;
 import com.google.gerrit.server.change.Abandon;
+import com.google.gerrit.server.change.ChangeJson;
 import com.google.gerrit.server.change.ChangeResource;
 import com.google.gerrit.server.change.PostReviewers;
 import com.google.gerrit.server.change.Restore;
@@ -36,6 +39,7 @@ import com.google.inject.Provider;
 import com.google.inject.assistedinject.Assisted;
 
 import java.io.IOException;
+import java.util.EnumSet;
 
 class ChangeApiImpl implements ChangeApi {
   interface Factory {
@@ -50,6 +54,7 @@ class ChangeApiImpl implements ChangeApi {
   private final Provider<Revert> revert;
   private final Provider<Restore> restore;
   private final Provider<PostReviewers> postReviewers;
+  private final ChangeJson changeJson;
 
   @Inject
   ChangeApiImpl(Changes changeApi,
@@ -59,6 +64,7 @@ class ChangeApiImpl implements ChangeApi {
       Provider<Revert> revert,
       Provider<Restore> restore,
       Provider<PostReviewers> postReviewers,
+      ChangeJson changeJson,
       @Assisted ChangeResource change) {
     this.changeApi = changeApi;
     this.revert = revert;
@@ -67,6 +73,7 @@ class ChangeApiImpl implements ChangeApi {
     this.abandon = abandon;
     this.restore = restore;
     this.postReviewers = postReviewers;
+    this.changeJson = changeJson;
     this.change = change;
   }
 
@@ -152,4 +159,15 @@ class ChangeApiImpl implements ChangeApi {
       throw new RestApiException("Cannot add change reviewer", e);
     }
   }
+
+  @Override
+  public ChangeInfo get(EnumSet<ListChangesOption> s)
+      throws RestApiException {
+    try {
+      return new ChangeInfoMapper(s).map(
+          changeJson.addOptions(s).format(change));
+    } catch (OrmException e) {
+      throw new RestApiException("Cannot retrieve change", e);
+    }
+  }
 }

gerrit-server/src/main/java/com/google/gerrit/server/api/changes/ChangeInfoMapper.java

@@ -0,0 +1,156 @@
+// Copyright (C) 2014 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.server.api.changes;
+
+import static com.google.gerrit.extensions.common.ListChangesOption.ALL_REVISIONS;
+import static com.google.gerrit.extensions.common.ListChangesOption.CURRENT_ACTIONS;
+import static com.google.gerrit.extensions.common.ListChangesOption.CURRENT_REVISION;
+import static com.google.gerrit.extensions.common.ListChangesOption.DETAILED_LABELS;
+import static com.google.gerrit.extensions.common.ListChangesOption.LABELS;
+import static com.google.gerrit.extensions.common.ListChangesOption.MESSAGES;
+
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+import com.google.gerrit.extensions.common.AccountInfo;
+import com.google.gerrit.extensions.common.ApprovalInfo;
+import com.google.gerrit.extensions.common.ChangeInfo;
+import com.google.gerrit.extensions.common.ChangeMessageInfo;
+import com.google.gerrit.extensions.common.ChangeStatus;
+import com.google.gerrit.extensions.common.LabelInfo;
+import com.google.gerrit.extensions.common.ListChangesOption;
+import com.google.gerrit.reviewdb.client.Change;
+import com.google.gerrit.reviewdb.client.Change.Status;
+import com.google.gerrit.server.change.ChangeJson;
+
+import java.util.EnumSet;
+import java.util.List;
+import java.util.Map;
+
+class ChangeInfoMapper {
+  private final static ImmutableMap<Change.Status, ChangeStatus> MAP =
+      Maps.immutableEnumMap(ImmutableMap.of(
+          Status.DRAFT, ChangeStatus.DRAFT,
+          Status.NEW, ChangeStatus.NEW,
+          Status.SUBMITTED, ChangeStatus.SUBMITTED,
+          Status.MERGED, ChangeStatus.MERGED,
+          Status.ABANDONED, ChangeStatus.ABANDONED));
+
+  private final EnumSet<ListChangesOption> s;
+
+  ChangeInfoMapper(EnumSet<ListChangesOption> s) {
+    this.s = s;
+  }
+
+  ChangeInfo map(ChangeJson.ChangeInfo i) {
+    ChangeInfo o = new ChangeInfo();
+    mapCommon(i, o);
+    if (has(LABELS) || has(DETAILED_LABELS)) {
+      mapLabels(i, o);
+    }
+    if (has(MESSAGES)) {
+      mapMessages(i, o);
+    }
+    if (has(ALL_REVISIONS) || has(CURRENT_REVISION)) {
+      o.revisions = i.revisions;
+    }
+    if (has(CURRENT_ACTIONS)) {
+      o.actions = i.actions;
+    }
+    return o;
+  }
+
+  private void mapCommon(ChangeJson.ChangeInfo i, ChangeInfo o) {
+    o.id = i.id;
+    o.project = i.project;
+    o.branch = i.branch;
+    o.topic = i.topic;
+    o.changeId = i.changeId;
+    o.subject = i.subject;
+    o.status = MAP.get(i.status);
+    o.created = i.created;
+    o.updated = i.updated;
+    o.starred = i.starred;
+    o.reviewed = i.reviewed;
+    o.mergeable = i.mergeable;
+    o.insertions = i.insertions;
+    o.deletions = i.deletions;
+    o.owner = fromAcountInfo(i.owner);
+    o.currentRevision = i.currentRevision;
+  }
+
+  private void mapMessages(ChangeJson.ChangeInfo i, ChangeInfo o) {
+    List<ChangeMessageInfo> r =
+        Lists.newArrayListWithCapacity(i.messages.size());
+    for (ChangeJson.ChangeMessageInfo m : i.messages) {
+      ChangeMessageInfo cmi = new ChangeMessageInfo();
+      cmi.id = m.id;
+      cmi.author = fromAcountInfo(m.author);
+      cmi.date = m.date;
+      cmi.message = m.message;
+      cmi._revisionNumber = m._revisionNumber;
+      r.add(cmi);
+    }
+    o.messages = r;
+  }
+
+  private void mapLabels(ChangeJson.ChangeInfo i, ChangeInfo o) {
+    Map<String, LabelInfo> r = Maps.newLinkedHashMap();
+    for (Map.Entry<String, ChangeJson.LabelInfo> e : i.labels.entrySet()) {
+      ChangeJson.LabelInfo li = e.getValue();
+      LabelInfo lo = new LabelInfo();
+      lo.approved = fromAcountInfo(li.approved);
+      lo.rejected = fromAcountInfo(li.rejected);
+      lo.recommended = fromAcountInfo(li.recommended);
+      lo.disliked = fromAcountInfo(li.disliked);
+      lo.value = li.value;
+      lo.optional = li.optional;
+      lo.values = li.values;
+      lo.all = Lists.newArrayListWithExpectedSize(li.all.size());
+      for (ChangeJson.ApprovalInfo ai : li.all) {
+        lo.all.add(fromApprovalInfo(ai));
+      }
+      r.put(e.getKey(), lo);
+    }
+    o.labels = r;
+  }
+
+  private boolean has(ListChangesOption o) {
+    return s.contains(o);
+  }
+
+  private static ApprovalInfo fromApprovalInfo(ChangeJson.ApprovalInfo ai) {
+    ApprovalInfo ao = new ApprovalInfo();
+    ao.value = ai.value;
+    ao.date = ai.date;
+    fromAccount(ai, ao);
+    return ao;
+  }
+
+  private static AccountInfo fromAcountInfo(
+      com.google.gerrit.server.account.AccountInfo i) {
+    AccountInfo ai = new AccountInfo();
+    fromAccount(i, ai);
+    return ai;
+  }
+
+  private static void fromAccount(
+      com.google.gerrit.server.account.AccountInfo i, AccountInfo ai) {
+    ai._accountId = i._accountId;
+    ai.email = i.email;
+    ai.name = i.name;
+    ai.username = i.username;
+  }
+}

gerrit-server/src/main/java/com/google/gerrit/server/change/ChangeJson.java

@@ -53,7 +53,12 @@ import com.google.gerrit.common.data.LabelValue;
 import com.google.gerrit.common.data.Permission;
 import com.google.gerrit.common.data.PermissionRange;
 import com.google.gerrit.common.data.SubmitRecord;
+import com.google.gerrit.extensions.common.ActionInfo;
+import com.google.gerrit.extensions.common.CommitInfo;
+import com.google.gerrit.extensions.common.FetchInfo;
+import com.google.gerrit.extensions.common.GitPerson;
 import com.google.gerrit.extensions.common.ListChangesOption;
+import com.google.gerrit.extensions.common.RevisionInfo;
 import com.google.gerrit.extensions.config.DownloadCommand;
 import com.google.gerrit.extensions.config.DownloadScheme;
 import com.google.gerrit.extensions.registration.DynamicMap;
@@ -75,7 +80,6 @@ import com.google.gerrit.server.AnonymousUser;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.account.AccountInfo;
-import com.google.gerrit.server.actions.ActionInfo;
 import com.google.gerrit.server.extensions.webui.UiActions;
 import com.google.gerrit.server.git.LabelNormalizer;
 import com.google.gerrit.server.patch.PatchListNotAvailableException;
@@ -917,7 +921,7 @@ public class ChangeJson {
           DownloadCommand command = e2.getProvider().get();
           String c = command.getCommand(scheme, projectName, refName);
           if (c != null) {
-            fetchInfo.addCommand(commandName, c);
+            addCommand(fetchInfo, commandName, c);
           }
         }
       }
@@ -926,6 +930,13 @@ public class ChangeJson {
     return r;
   }
 
+  private void addCommand(FetchInfo fetchInfo, String commandName, String c) {
+    if (fetchInfo.commands == null) {
+      fetchInfo.commands = Maps.newTreeMap();
+    }
+    fetchInfo.commands.put(commandName, c);
+  }
+
   private static GitPerson toGitPerson(UserIdentity committer) {
     GitPerson p = new GitPerson();
     p.name = committer.getName();
@@ -975,52 +986,6 @@ public class ChangeJson {
     }
   }
 
-  public static class RevisionInfo {
-    private transient boolean isCurrent;
-    public Boolean draft;
-    public Boolean hasDraftComments;
-    public int _number;
-    public Map<String, FetchInfo> fetch;
-    public CommitInfo commit;
-    public Map<String, FileInfoJson.FileInfo> files;
-    public Map<String, ActionInfo> actions;
-  }
-
-  public static class FetchInfo {
-    public String url;
-    public String ref;
-    public Map<String, String> commands;
-
-    FetchInfo(String url, String ref) {
-      this.url = url;
-      this.ref = ref;
-    }
-
-    void addCommand(String name, String command) {
-      if (commands == null) {
-        commands = Maps.newTreeMap();
-      }
-      commands.put(name, command);
-    }
-  }
-
-  public static class GitPerson {
-    public String name;
-    public String email;
-    public Timestamp date;
-    public int tz;
-  }
-
-  public static class CommitInfo {
-    public final String kind = "gerritcodereview#commit";
-    public String commit;
-    public List<CommitInfo> parents;
-    public GitPerson author;
-    public GitPerson committer;
-    public String subject;
-    public String message;
-  }
-
   public static class LabelInfo {
     transient SubmitRecord.Label.Status _status;
 

gerrit-server/src/main/java/com/google/gerrit/server/change/FileInfoJson.java

@@ -16,10 +16,11 @@ package com.google.gerrit.server.change;
 
 import com.google.common.collect.Maps;
 import com.google.gerrit.common.Nullable;
+import com.google.gerrit.extensions.common.FileInfo;
+import com.google.gerrit.reviewdb.client.AccountDiffPreference.Whitespace;
 import com.google.gerrit.reviewdb.client.Change;
 import com.google.gerrit.reviewdb.client.Patch;
 import com.google.gerrit.reviewdb.client.PatchSet;
-import com.google.gerrit.reviewdb.client.AccountDiffPreference.Whitespace;
 import com.google.gerrit.server.patch.PatchList;
 import com.google.gerrit.server.patch.PatchListCache;
 import com.google.gerrit.server.patch.PatchListEntry;
@@ -55,7 +56,7 @@ public class FileInfoJson {
 
     Map<String, FileInfo> files = Maps.newTreeMap();
     for (PatchListEntry e : list.getPatches()) {
-      FileInfoJson.FileInfo d = new FileInfoJson.FileInfo();
+      FileInfo d = new FileInfo();
       d.status = e.getChangeType() != Patch.ChangeType.MODIFIED
           ? e.getChangeType().getCode() : null;
       d.oldPath = e.getOldName();
@@ -66,7 +67,7 @@ public class FileInfoJson {
         d.linesDeleted = e.getDeletions() > 0 ? e.getDeletions() : null;
       }
 
-      FileInfoJson.FileInfo o = files.put(e.getNewName(), d);
+      FileInfo o = files.put(e.getNewName(), d);
       if (o != null) {
         // This should only happen on a delete-add break created by JGit
         // when the file was rewritten and too little content survived. Write
@@ -85,12 +86,4 @@ public class FileInfoJson {
     }
     return files;
   }
-
-  static class FileInfo {
-    Character status;
-    Boolean binary;
-    String oldPath;
-    Integer linesInserted;
-    Integer linesDeleted;
-  }
 }

gerrit-server/src/main/java/com/google/gerrit/server/change/Files.java

@@ -16,6 +16,7 @@ package com.google.gerrit.server.change;
 
 import com.google.common.collect.Lists;
 import com.google.common.collect.Sets;
+import com.google.gerrit.extensions.common.FileInfo;
 import com.google.gerrit.extensions.registration.DynamicMap;
 import com.google.gerrit.extensions.restapi.AuthException;
 import com.google.gerrit.extensions.restapi.BadRequestException;
@@ -33,7 +34,6 @@ import com.google.gerrit.reviewdb.client.PatchSet;
 import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.IdentifiedUser;
-import com.google.gerrit.server.change.FileInfoJson.FileInfo;
 import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gerrit.server.patch.PatchList;
 import com.google.gerrit.server.patch.PatchListCache;

gerrit-server/src/main/java/com/google/gerrit/server/change/GetCommit.java

@@ -14,11 +14,11 @@
 
 package com.google.gerrit.server.change;
 
+import com.google.gerrit.extensions.common.CommitInfo;
 import com.google.gerrit.extensions.restapi.CacheControl;
 import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
 import com.google.gerrit.extensions.restapi.Response;
 import com.google.gerrit.extensions.restapi.RestReadView;
-import com.google.gerrit.server.change.ChangeJson.CommitInfo;
 import com.google.gerrit.server.patch.PatchSetInfoNotAvailableException;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;

gerrit-server/src/main/java/com/google/gerrit/server/change/GetRelated.java

@@ -20,13 +20,13 @@ import com.google.common.collect.Maps;
 import com.google.common.collect.Multimap;
 import com.google.common.collect.Sets;
 import com.google.gerrit.common.Nullable;
+import com.google.gerrit.extensions.common.CommitInfo;
+import com.google.gerrit.extensions.common.GitPerson;
 import com.google.gerrit.extensions.restapi.RestReadView;
 import com.google.gerrit.reviewdb.client.Change;
 import com.google.gerrit.reviewdb.client.PatchSet;
 import com.google.gerrit.reviewdb.client.PatchSetAncestor;
 import com.google.gerrit.reviewdb.server.ReviewDb;
-import com.google.gerrit.server.change.ChangeJson.CommitInfo;
-import com.google.gerrit.server.change.ChangeJson.GitPerson;
 import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gerrit.server.project.ChangeControl;
 import com.google.gerrit.server.project.ProjectControl;

gerrit-server/src/main/java/com/google/gerrit/server/project/ConfigInfo.java

@@ -17,6 +17,7 @@ package com.google.gerrit.server.project;
 import com.google.common.base.Strings;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Maps;
+import com.google.gerrit.extensions.common.ActionInfo;
 import com.google.gerrit.extensions.registration.DynamicMap;
 import com.google.gerrit.extensions.registration.DynamicMap.Entry;
 import com.google.gerrit.extensions.restapi.RestView;
@@ -24,7 +25,6 @@ import com.google.gerrit.extensions.webui.UiAction;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.client.Project.InheritableBoolean;
 import com.google.gerrit.reviewdb.client.Project.SubmitType;
-import com.google.gerrit.server.actions.ActionInfo;
 import com.google.gerrit.server.config.AllProjectsNameProvider;
 import com.google.gerrit.server.config.PluginConfig;
 import com.google.gerrit.server.config.PluginConfigFactory;