Merge "Add the rest-api endpoint for creating a change for labels update."
diff --git a/Documentation/rest-api-projects.txt b/Documentation/rest-api-projects.txt
index a21ed8e..8d30728 100644
--- a/Documentation/rest-api-projects.txt
+++ b/Documentation/rest-api-projects.txt
@@ -3648,6 +3648,82 @@
   HTTP/1.1 200 OK
 ----
 
+[[create-labels-change]]
+=== Create Labels Change for review.
+--
+'POST /projects/link:#project-name[\{project-name\}]/labels:review'
+--
+
+Creates/updates/deletes multiple label definitions in this project at once.
+
+This takes the same input as link:#batch-update-labels[Batch Updates Labels],
+but creates a pending change for review. Like
+link:#create-change[Create Change], it returns a link:#change-info[ChangeInfo]
+entity describing the resulting change.
+
+.Request
+----
+  POST /projects/testproj/config:review HTTP/1.0
+  Content-Type: application/json; charset=UTF-8
+
+  {
+    "commit_message": "Update Labels",
+    "delete": [
+      "Old-Review",
+      "Unused-Review"
+    ],
+    "create": [
+      {
+        "name": "Foo-Review",
+        "values": {
+          " 0": "No score",
+          "-1": "I would prefer this is not submitted as is",
+          "-2": "This shall not be submitted",
+          "+1": "Looks good to me, but someone else must approve",
+          "+2": "Looks good to me, approved"
+      }
+    ],
+    "update:" {
+      "Bar-Review": {
+        "function": "MaxWithBlock"
+      },
+      "Baz-Review": {
+        "copy_condition": "is:MIN"
+      }
+    }
+  }
+----
+
+.Response
+----
+  HTTP/1.1 200 OK
+  Content-Type: application/json; charset=UTF-8
+
+  )]}'
+  {
+    "id": "testproj~refs%2Fmeta%2Fconfig~Ieaf185bf90a1fc3b58461e399385e158a20b31a2",
+    "project": "testproj",
+    "branch": "refs/meta/config",
+    "hashtags": [],
+    "change_id": "Ieaf185bf90a1fc3b58461e399385e158a20b31a2",
+    "subject": "Review access change",
+    "status": "NEW",
+    "created": "2017-09-07 14:31:11.852000000",
+    "updated": "2017-09-07 14:31:11.852000000",
+    "submit_type": "CHERRY_PICK",
+    "mergeable": true,
+    "insertions": 2,
+    "deletions": 0,
+    "unresolved_comment_count": 0,
+    "has_review_started": true,
+    "_number": 7,
+    "owner": {
+      "_account_id": 1000000
+    }
+  }
+----
+
+
 [[submit-requirement-endpoints]]
 == Submit Requirement Endpoints
 
diff --git a/java/com/google/gerrit/extensions/api/projects/ProjectApi.java b/java/com/google/gerrit/extensions/api/projects/ProjectApi.java
index 697561b..fa78fdb 100644
--- a/java/com/google/gerrit/extensions/api/projects/ProjectApi.java
+++ b/java/com/google/gerrit/extensions/api/projects/ProjectApi.java
@@ -287,6 +287,10 @@
    */
   void labels(BatchLabelInput input) throws RestApiException;
 
+  /** Same as {@link #labels(BatchLabelInput)}, but creates a change with required updates. */
+  @CanIgnoreReturnValue
+  ChangeInfo labelsReview(BatchLabelInput input) throws RestApiException;
+
   /**
    * A default implementation which allows source compatibility when adding new methods to the
    * interface.
@@ -497,5 +501,10 @@
     public void labels(BatchLabelInput input) throws RestApiException {
       throw new NotImplementedException();
     }
+
+    @Override
+    public ChangeInfo labelsReview(BatchLabelInput input) throws RestApiException {
+      throw new NotImplementedException();
+    }
   }
 }
diff --git a/java/com/google/gerrit/extensions/common/AbstractBatchInput.java b/java/com/google/gerrit/extensions/common/AbstractBatchInput.java
new file mode 100644
index 0000000..b872b18
--- /dev/null
+++ b/java/com/google/gerrit/extensions/common/AbstractBatchInput.java
@@ -0,0 +1,26 @@
+// Copyright (C) 2024 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;
+
+/** Input for the REST API that describes additions, updates and deletions items in a collection. */
+public abstract class AbstractBatchInput<T> {
+  public String commitMessage;
+  public List<String> delete;
+  public List<T> create;
+  public Map<String, T> update;
+}
diff --git a/java/com/google/gerrit/extensions/common/BatchLabelInput.java b/java/com/google/gerrit/extensions/common/BatchLabelInput.java
index eb4c581..aa91314 100644
--- a/java/com/google/gerrit/extensions/common/BatchLabelInput.java
+++ b/java/com/google/gerrit/extensions/common/BatchLabelInput.java
@@ -14,13 +14,5 @@
 
 package com.google.gerrit.extensions.common;
 
-import java.util.List;
-import java.util.Map;
-
 /** Input for the REST API that describes additions, updates and deletions of label definitions. */
-public class BatchLabelInput {
-  public String commitMessage;
-  public List<String> delete;
-  public List<LabelDefinitionInput> create;
-  public Map<String, LabelDefinitionInput> update;
-}
+public class BatchLabelInput extends AbstractBatchInput<LabelDefinitionInput> {}
diff --git a/java/com/google/gerrit/server/api/projects/ProjectApiImpl.java b/java/com/google/gerrit/server/api/projects/ProjectApiImpl.java
index 38b2d46..c817b93 100644
--- a/java/com/google/gerrit/server/api/projects/ProjectApiImpl.java
+++ b/java/com/google/gerrit/server/api/projects/ProjectApiImpl.java
@@ -86,6 +86,7 @@
 import com.google.gerrit.server.restapi.project.ListSubmitRequirements;
 import com.google.gerrit.server.restapi.project.ListTags;
 import com.google.gerrit.server.restapi.project.PostLabels;
+import com.google.gerrit.server.restapi.project.PostLabelsReview;
 import com.google.gerrit.server.restapi.project.ProjectsCollection;
 import com.google.gerrit.server.restapi.project.PutConfig;
 import com.google.gerrit.server.restapi.project.PutConfigReview;
@@ -149,6 +150,7 @@
   private final Provider<ListLabels> listLabels;
   private final Provider<ListSubmitRequirements> listSubmitRequirements;
   private final PostLabels postLabels;
+  private final PostLabelsReview postLabelsReview;
   private final LabelApiImpl.Factory labelApi;
   private final SubmitRequirementApiImpl.Factory submitRequirementApi;
 
@@ -191,6 +193,7 @@
       Provider<ListLabels> listLabels,
       Provider<ListSubmitRequirements> listSubmitRequirements,
       PostLabels postLabels,
+      PostLabelsReview postLabelsReview,
       LabelApiImpl.Factory labelApi,
       SubmitRequirementApiImpl.Factory submitRequirementApi,
       @Assisted ProjectResource project) {
@@ -233,6 +236,7 @@
         listLabels,
         listSubmitRequirements,
         postLabels,
+        postLabelsReview,
         labelApi,
         submitRequirementApi,
         null);
@@ -277,6 +281,7 @@
       Provider<ListLabels> listLabels,
       Provider<ListSubmitRequirements> listSubmitRequirements,
       PostLabels postLabels,
+      PostLabelsReview postLabelsReview,
       LabelApiImpl.Factory labelApi,
       SubmitRequirementApiImpl.Factory submitRequirementApi,
       @Assisted String name) {
@@ -319,6 +324,7 @@
         listLabels,
         listSubmitRequirements,
         postLabels,
+        postLabelsReview,
         labelApi,
         submitRequirementApi,
         name);
@@ -363,6 +369,7 @@
       Provider<ListLabels> listLabels,
       Provider<ListSubmitRequirements> listSubmitRequirements,
       PostLabels postLabels,
+      PostLabelsReview postLabelsReview,
       LabelApiImpl.Factory labelApi,
       SubmitRequirementApiImpl.Factory submitRequirementApi,
       String name) {
@@ -405,6 +412,7 @@
     this.listLabels = listLabels;
     this.listSubmitRequirements = listSubmitRequirements;
     this.postLabels = postLabels;
+    this.postLabelsReview = postLabelsReview;
     this.labelApi = labelApi;
     this.submitRequirementApi = submitRequirementApi;
   }
@@ -831,4 +839,13 @@
       throw asRestApiException("Cannot update labels", e);
     }
   }
+
+  @Override
+  public ChangeInfo labelsReview(BatchLabelInput input) throws RestApiException {
+    try {
+      return postLabelsReview.apply(checkExists(), input).value();
+    } catch (Exception e) {
+      throw asRestApiException("Cannot create change for labels update", e);
+    }
+  }
 }
diff --git a/java/com/google/gerrit/server/restapi/project/AbstractPostCollection.java b/java/com/google/gerrit/server/restapi/project/AbstractPostCollection.java
new file mode 100644
index 0000000..aaf8d02
--- /dev/null
+++ b/java/com/google/gerrit/server/restapi/project/AbstractPostCollection.java
@@ -0,0 +1,116 @@
+// Copyright (C) 2024 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.restapi.project;
+
+import com.google.common.base.Strings;
+import com.google.gerrit.extensions.common.AbstractBatchInput;
+import com.google.gerrit.extensions.restapi.AuthException;
+import com.google.gerrit.extensions.restapi.BadRequestException;
+import com.google.gerrit.extensions.restapi.ResourceConflictException;
+import com.google.gerrit.extensions.restapi.Response;
+import com.google.gerrit.extensions.restapi.RestCollectionModifyView;
+import com.google.gerrit.extensions.restapi.RestResource;
+import com.google.gerrit.extensions.restapi.UnprocessableEntityException;
+import com.google.gerrit.server.CurrentUser;
+import com.google.gerrit.server.permissions.PermissionBackendException;
+import com.google.gerrit.server.project.ProjectConfig;
+import com.google.gerrit.server.project.ProjectResource;
+import com.google.inject.Provider;
+import java.io.IOException;
+import org.eclipse.jgit.errors.ConfigInvalidException;
+
+/** Base class for a rest API batch update. */
+public abstract class AbstractPostCollection<
+        TId,
+        TResource extends RestResource,
+        TItemInput,
+        TBatchInput extends AbstractBatchInput<TItemInput>>
+    implements RestCollectionModifyView<ProjectResource, TResource, TBatchInput> {
+  private final Provider<CurrentUser> user;
+  private final RepoMetaDataUpdater updater;
+
+  public AbstractPostCollection(RepoMetaDataUpdater updater, Provider<CurrentUser> user) {
+    this.user = user;
+    this.updater = updater;
+  }
+
+  @Override
+  public Response<?> apply(ProjectResource rsrc, TBatchInput input)
+      throws AuthException, UnprocessableEntityException, PermissionBackendException, IOException,
+          ConfigInvalidException, BadRequestException, ResourceConflictException {
+    if (!user.get().isIdentifiedUser()) {
+      throw new AuthException("Authentication required");
+    }
+    if (input == null) {
+      return Response.ok("");
+    }
+
+    try (var configUpdater =
+        updater.configUpdater(rsrc.getNameKey(), input.commitMessage, defaultCommitMessage())) {
+      ProjectConfig config = configUpdater.getConfig();
+      if (updateProjectConfig(config, input)) {
+        configUpdater.commitConfigUpdate();
+      }
+    }
+    return Response.ok("");
+  }
+
+  public boolean updateProjectConfig(ProjectConfig config, AbstractBatchInput<TItemInput> input)
+      throws UnprocessableEntityException, ResourceConflictException, BadRequestException {
+    boolean configChanged = false;
+    if (input.delete != null && !input.delete.isEmpty()) {
+      for (String name : input.delete) {
+        if (Strings.isNullOrEmpty(name)) {
+          throw new BadRequestException("The delete property contains null or empty name");
+        }
+        deleteItem(config, name.trim());
+      }
+      configChanged = true;
+    }
+    if (input.create != null && !input.create.isEmpty()) {
+      for (TItemInput labelInput : input.create) {
+        if (labelInput == null) {
+          throw new BadRequestException("The create property contains a null item");
+        }
+        createItem(config, labelInput);
+      }
+      configChanged = true;
+    }
+    if (input.update != null && !input.update.isEmpty()) {
+      for (var e : input.update.entrySet()) {
+        if (e.getKey() == null) {
+          throw new BadRequestException("The update property contains a null key");
+        }
+        if (e.getValue() == null) {
+          throw new BadRequestException("The update property contains a null value");
+        }
+        configChanged |= updateItem(config, e.getKey().trim(), e.getValue());
+      }
+    }
+    return configChanged;
+  }
+
+  /** Provides default commit message when user doesn't specify one in the input. */
+  public abstract String defaultCommitMessage();
+
+  protected abstract boolean updateItem(ProjectConfig config, String name, TItemInput resource)
+      throws BadRequestException, ResourceConflictException, UnprocessableEntityException;
+
+  protected abstract void createItem(ProjectConfig config, TItemInput resource)
+      throws BadRequestException, ResourceConflictException, UnprocessableEntityException;
+
+  protected abstract void deleteItem(ProjectConfig config, String name)
+      throws BadRequestException, ResourceConflictException, UnprocessableEntityException;
+}
diff --git a/java/com/google/gerrit/server/restapi/project/PostLabels.java b/java/com/google/gerrit/server/restapi/project/PostLabels.java
index 3616f4b..7f502ff 100644
--- a/java/com/google/gerrit/server/restapi/project/PostLabels.java
+++ b/java/com/google/gerrit/server/restapi/project/PostLabels.java
@@ -14,138 +14,76 @@
 
 package com.google.gerrit.server.restapi.project;
 
-import com.google.common.base.Strings;
 import com.google.gerrit.entities.LabelType;
 import com.google.gerrit.extensions.common.BatchLabelInput;
 import com.google.gerrit.extensions.common.LabelDefinitionInput;
-import com.google.gerrit.extensions.restapi.AuthException;
 import com.google.gerrit.extensions.restapi.BadRequestException;
 import com.google.gerrit.extensions.restapi.ResourceConflictException;
-import com.google.gerrit.extensions.restapi.Response;
-import com.google.gerrit.extensions.restapi.RestCollectionModifyView;
 import com.google.gerrit.extensions.restapi.UnprocessableEntityException;
 import com.google.gerrit.server.CurrentUser;
-import com.google.gerrit.server.git.meta.MetaDataUpdate;
-import com.google.gerrit.server.permissions.PermissionBackend;
-import com.google.gerrit.server.permissions.PermissionBackendException;
-import com.google.gerrit.server.permissions.ProjectPermission;
 import com.google.gerrit.server.project.LabelResource;
-import com.google.gerrit.server.project.ProjectCache;
 import com.google.gerrit.server.project.ProjectConfig;
-import com.google.gerrit.server.project.ProjectResource;
 import com.google.inject.Inject;
 import com.google.inject.Provider;
 import com.google.inject.Singleton;
-import java.io.IOException;
-import java.util.Map;
-import org.eclipse.jgit.errors.ConfigInvalidException;
 
 /** REST endpoint that allows to add, update and delete label definitions in a batch. */
 @Singleton
 public class PostLabels
-    implements RestCollectionModifyView<ProjectResource, LabelResource, BatchLabelInput> {
-  private final Provider<CurrentUser> user;
-  private final PermissionBackend permissionBackend;
-  private final MetaDataUpdate.User updateFactory;
-  private final ProjectConfig.Factory projectConfigFactory;
+    extends AbstractPostCollection<String, LabelResource, LabelDefinitionInput, BatchLabelInput> {
   private final DeleteLabel deleteLabel;
   private final CreateLabel createLabel;
   private final SetLabel setLabel;
-  private final ProjectCache projectCache;
 
   @Inject
   public PostLabels(
       Provider<CurrentUser> user,
-      PermissionBackend permissionBackend,
-      MetaDataUpdate.User updateFactory,
-      ProjectConfig.Factory projectConfigFactory,
       DeleteLabel deleteLabel,
       CreateLabel createLabel,
       SetLabel setLabel,
-      ProjectCache projectCache) {
-    this.user = user;
-    this.permissionBackend = permissionBackend;
-    this.updateFactory = updateFactory;
-    this.projectConfigFactory = projectConfigFactory;
+      RepoMetaDataUpdater updater) {
+    super(updater, user);
     this.deleteLabel = deleteLabel;
     this.createLabel = createLabel;
     this.setLabel = setLabel;
-    this.projectCache = projectCache;
   }
 
   @Override
-  public Response<?> apply(ProjectResource rsrc, BatchLabelInput input)
-      throws AuthException, UnprocessableEntityException, PermissionBackendException, IOException,
-          ConfigInvalidException, BadRequestException, ResourceConflictException {
-    if (!user.get().isIdentifiedUser()) {
-      throw new AuthException("Authentication required");
+  public String defaultCommitMessage() {
+    return "Update labels";
+  }
+
+  @Override
+  protected boolean updateItem(ProjectConfig config, String name, LabelDefinitionInput resource)
+      throws BadRequestException, ResourceConflictException, UnprocessableEntityException {
+    LabelType labelType = config.getLabelSections().get(name);
+    if (labelType == null) {
+      throw new UnprocessableEntityException(String.format("label %s not found", name));
+    }
+    if (resource.commitMessage != null) {
+      throw new BadRequestException("commit message on label definition input not supported");
     }
 
-    permissionBackend
-        .currentUser()
-        .project(rsrc.getNameKey())
-        .check(ProjectPermission.WRITE_CONFIG);
+    return setLabel.updateLabel(config, labelType, resource);
+  }
 
-    if (input == null) {
-      input = new BatchLabelInput();
+  @Override
+  protected void createItem(ProjectConfig config, LabelDefinitionInput labelInput)
+      throws BadRequestException, ResourceConflictException {
+    if (labelInput.name == null || labelInput.name.trim().isEmpty()) {
+      throw new BadRequestException("label name is required for new label");
     }
-
-    try (MetaDataUpdate md = updateFactory.create(rsrc.getNameKey())) {
-      boolean dirty = false;
-
-      ProjectConfig config = projectConfigFactory.read(md);
-
-      if (input.delete != null && !input.delete.isEmpty()) {
-        for (String labelName : input.delete) {
-          if (!deleteLabel.deleteLabel(config, labelName.trim())) {
-            throw new UnprocessableEntityException(String.format("label %s not found", labelName));
-          }
-        }
-        dirty = true;
-      }
-
-      if (input.create != null && !input.create.isEmpty()) {
-        for (LabelDefinitionInput labelInput : input.create) {
-          if (labelInput.name == null || labelInput.name.trim().isEmpty()) {
-            throw new BadRequestException("label name is required for new label");
-          }
-          if (labelInput.commitMessage != null) {
-            throw new BadRequestException("commit message on label definition input not supported");
-          }
-          @SuppressWarnings("unused")
-          var unused = createLabel.createLabel(config, labelInput.name.trim(), labelInput);
-        }
-        dirty = true;
-      }
-
-      if (input.update != null && !input.update.isEmpty()) {
-        for (Map.Entry<String, LabelDefinitionInput> e : input.update.entrySet()) {
-          LabelType labelType = config.getLabelSections().get(e.getKey().trim());
-          if (labelType == null) {
-            throw new UnprocessableEntityException(String.format("label %s not found", e.getKey()));
-          }
-          if (e.getValue().commitMessage != null) {
-            throw new BadRequestException("commit message on label definition input not supported");
-          }
-
-          if (setLabel.updateLabel(config, labelType, e.getValue())) {
-            dirty = true;
-          }
-        }
-      }
-
-      if (input.commitMessage != null) {
-        md.setMessage(Strings.emptyToNull(input.commitMessage.trim()));
-      } else {
-        md.setMessage("Update labels");
-      }
-
-      if (dirty) {
-        config.commit(md);
-        projectCache.evictAndReindex(rsrc.getProjectState().getProject());
-      }
+    if (labelInput.commitMessage != null) {
+      throw new BadRequestException("commit message on label definition input not supported");
     }
+    @SuppressWarnings("unused")
+    var unused = createLabel.createLabel(config, labelInput.name.trim(), labelInput);
+  }
 
-    return Response.ok("");
+  @Override
+  protected void deleteItem(ProjectConfig config, String name) throws UnprocessableEntityException {
+    if (!deleteLabel.deleteLabel(config, name)) {
+      throw new UnprocessableEntityException(String.format("label %s not found", name));
+    }
   }
 }
diff --git a/java/com/google/gerrit/server/restapi/project/PostLabelsReview.java b/java/com/google/gerrit/server/restapi/project/PostLabelsReview.java
new file mode 100644
index 0000000..7c0936f
--- /dev/null
+++ b/java/com/google/gerrit/server/restapi/project/PostLabelsReview.java
@@ -0,0 +1,56 @@
+// Copyright (C) 2024 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.restapi.project;
+
+import com.google.gerrit.extensions.common.BatchLabelInput;
+import com.google.gerrit.extensions.common.ChangeInfo;
+import com.google.gerrit.extensions.restapi.Response;
+import com.google.gerrit.extensions.restapi.RestApiException;
+import com.google.gerrit.extensions.restapi.RestModifyView;
+import com.google.gerrit.server.permissions.PermissionBackendException;
+import com.google.gerrit.server.project.ProjectConfig;
+import com.google.gerrit.server.project.ProjectResource;
+import com.google.gerrit.server.restapi.project.RepoMetaDataUpdater.ConfigChangeCreator;
+import com.google.gerrit.server.update.UpdateException;
+import com.google.inject.Inject;
+import java.io.IOException;
+import javax.inject.Singleton;
+import org.eclipse.jgit.errors.ConfigInvalidException;
+
+@Singleton
+public class PostLabelsReview implements RestModifyView<ProjectResource, BatchLabelInput> {
+
+  private final RepoMetaDataUpdater repoMetaDataUpdater;
+  private final PostLabels postLabels;
+
+  @Inject
+  PostLabelsReview(RepoMetaDataUpdater repoMetaDataUpdater, PostLabels postLabels) {
+    this.repoMetaDataUpdater = repoMetaDataUpdater;
+    this.postLabels = postLabels;
+  }
+
+  @Override
+  public Response<ChangeInfo> apply(ProjectResource rsrc, BatchLabelInput input)
+      throws PermissionBackendException, IOException, ConfigInvalidException, UpdateException,
+          RestApiException {
+    try (ConfigChangeCreator creator =
+        repoMetaDataUpdater.configChangeCreator(
+            rsrc.getNameKey(), input.commitMessage, "Review labels change")) {
+      ProjectConfig config = creator.getConfig();
+      var unused = postLabels.updateProjectConfig(config, input);
+      return creator.createChange();
+    }
+  }
+}
diff --git a/java/com/google/gerrit/server/restapi/project/ProjectRestApiModule.java b/java/com/google/gerrit/server/restapi/project/ProjectRestApiModule.java
index c7b905e1d..07e1e72 100644
--- a/java/com/google/gerrit/server/restapi/project/ProjectRestApiModule.java
+++ b/java/com/google/gerrit/server/restapi/project/ProjectRestApiModule.java
@@ -103,10 +103,11 @@
 
     child(PROJECT_KIND, "labels").to(LabelsCollection.class);
     create(LABEL_KIND).to(CreateLabel.class);
-    postOnCollection(LABEL_KIND).to(PostLabels.class);
     get(LABEL_KIND).to(GetLabel.class);
     put(LABEL_KIND).to(SetLabel.class);
     delete(LABEL_KIND).to(DeleteLabel.class);
+    postOnCollection(LABEL_KIND).to(PostLabels.class);
+    post(PROJECT_KIND, "labels:review").to(PostLabelsReview.class);
 
     get(PROJECT_KIND, "parent").to(GetParent.class);
     put(PROJECT_KIND, "parent").to(SetParent.class);
diff --git a/javatests/com/google/gerrit/acceptance/api/project/LabelsReviewIT.java b/javatests/com/google/gerrit/acceptance/api/project/LabelsReviewIT.java
new file mode 100644
index 0000000..8e64325
--- /dev/null
+++ b/javatests/com/google/gerrit/acceptance/api/project/LabelsReviewIT.java
@@ -0,0 +1,85 @@
+// Copyright (C) 2024 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.acceptance.api.project;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
+import com.google.gerrit.acceptance.AbstractDaemonTest;
+import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
+import com.google.gerrit.entities.Project;
+import com.google.gerrit.extensions.common.BatchLabelInput;
+import com.google.gerrit.extensions.common.ChangeInfo;
+import com.google.gerrit.extensions.common.LabelDefinitionInput;
+import com.google.inject.Inject;
+import org.eclipse.jgit.lib.Config;
+import org.junit.Test;
+
+public class LabelsReviewIT extends AbstractDaemonTest {
+  @Inject private ProjectOperations projectOperations;
+
+  @Test
+  public void createLabelsChangeWithDefaultMessage() throws Exception {
+    Project.NameKey testProject = projectOperations.newProject().create();
+    LabelDefinitionInput fooInput = new LabelDefinitionInput();
+    fooInput.name = "Foo";
+    fooInput.values = ImmutableMap.of("+1", "Looks Good", " 0", "Don't Know", "-1", "Looks Bad");
+    BatchLabelInput input = new BatchLabelInput();
+    input.create = ImmutableList.of(fooInput);
+
+    ChangeInfo changeInfo = gApi.projects().name(testProject.get()).labelsReview(input);
+
+    assertThat(changeInfo.subject).isEqualTo("Review labels change");
+    Config config = new Config();
+    config.fromText(
+        gApi.changes()
+            .id(changeInfo.changeId)
+            .revision(1)
+            .file("project.config")
+            .content()
+            .asString());
+    assertThat(config.getStringList("label", "Foo", "value"))
+        .asList()
+        .containsExactly("+1 Looks Good", "0 Don't Know", "-1 Looks Bad");
+  }
+
+  @Test
+  public void createLabelsChangeWithCustomMessage() throws Exception {
+    Project.NameKey testProject = projectOperations.newProject().create();
+    LabelDefinitionInput fooInput = new LabelDefinitionInput();
+    fooInput.name = "Foo";
+    fooInput.values = ImmutableMap.of("+1", "Looks Good", " 0", "Don't Know", "-1", "Looks Bad");
+    BatchLabelInput input = new BatchLabelInput();
+    input.create = ImmutableList.of(fooInput);
+    String customMessage = "test custom message";
+    input.commitMessage = customMessage;
+
+    ChangeInfo changeInfo = gApi.projects().name(testProject.get()).labelsReview(input);
+
+    assertThat(changeInfo.subject).isEqualTo(customMessage);
+    Config config = new Config();
+    config.fromText(
+        gApi.changes()
+            .id(changeInfo.changeId)
+            .revision(1)
+            .file("project.config")
+            .content()
+            .asString());
+    assertThat(config.getStringList("label", "Foo", "value"))
+        .asList()
+        .containsExactly("+1 Looks Good", "0 Don't Know", "-1 Looks Bad");
+  }
+}
diff --git a/javatests/com/google/gerrit/acceptance/rest/binding/ProjectsRestApiBindingsIT.java b/javatests/com/google/gerrit/acceptance/rest/binding/ProjectsRestApiBindingsIT.java
index f00804d..0cda3ba 100644
--- a/javatests/com/google/gerrit/acceptance/rest/binding/ProjectsRestApiBindingsIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/binding/ProjectsRestApiBindingsIT.java
@@ -83,6 +83,7 @@
           RestCall.post("/projects/%s/index.changes"),
           RestCall.get("/projects/%s/labels"),
           RestCall.post("/projects/%s/labels/"),
+          RestCall.post("/projects/%s/labels:review"),
           RestCall.put("/projects/%s/labels/new-label"),
           RestCall.get("/projects/%s/parent"),
           RestCall.put("/projects/%s/parent"),