Deprecate public class names with master terminology

Signed-off-by: Tianli Feng <ftianli@amazon.com>

server/src/main/java/org/opensearch/action/admin/cluster/health/TransportClusterHealthAction.java

@@ -226,8 +226,8 @@ public void onNoLongerMaster(String source) {
                             "stopped being cluster-manager while waiting for events with priority [{}]. retrying.",
                             request.waitForEvents()
                         );
-                        // TransportClusterManagerNodeAction implements the retry logic, which is triggered by passing a
-                        // NotClusterManagerException
+                        // TransportClusterManagerNodeAction implements the retry logic,
+                        // which is triggered by passing a NotClusterManagerException
                         listener.onFailure(new NotClusterManagerException("no longer cluster-manager. source: [" + source + "]"));
                     }
 

server/src/main/java/org/opensearch/cluster/ClusterManagerNodeChangePredicate.java

@@ -41,9 +41,13 @@
  *
  * @opensearch.internal
  */
-public final class ClusterManagerNodeChangePredicate {
+// TODO: add final keyword to the class and private keyword to the default constructor,
+// after removing the deprecated class MasterNodeChangePredicate.
+// Removed the final keyword temporarily only for making the class MasterNodeChangePredicate as a subclass,
+// so that preserving the both class names by maintaining one class implementation for backwards compatibility.
+public class ClusterManagerNodeChangePredicate {
 
-    private ClusterManagerNodeChangePredicate() {
+    ClusterManagerNodeChangePredicate() {
 
     }
 

server/src/main/java/org/opensearch/cluster/LocalNodeMasterListener.java

@@ -0,0 +1,44 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you 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.
+ */
+/*
+ * Modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
+package org.opensearch.cluster;
+
+/**
+ * Enables listening to cluster-manager changes events of the local node (when the local node becomes the cluster-manager, and when the local
+ * node cease being a cluster-manager).
+ *
+ * @opensearch.internal
+ * @deprecated As of 2.2, because supporting inclusive language, replaced by {@link LocalNodeClusterManagerListener}
+ */
+@Deprecated
+public interface LocalNodeMasterListener extends LocalNodeClusterManagerListener {
+
+}

server/src/main/java/org/opensearch/cluster/MasterNodeChangePredicate.java

@@ -0,0 +1,48 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you 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.
+ */
+
+/*
+ * Modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
+package org.opensearch.cluster;
+
+/**
+ * Utility class to build a predicate that accepts cluster state changes
+ *
+ * @opensearch.internal
+ * @deprecated As of 2.2, because supporting inclusive language, replaced by {@link ClusterManagerNodeChangePredicate}
+ */
+@Deprecated
+public final class MasterNodeChangePredicate extends ClusterManagerNodeChangePredicate {
+
+    private MasterNodeChangePredicate() {
+
+    }
+
+}

server/src/main/java/org/opensearch/cluster/NotMasterException.java

@@ -0,0 +1,57 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you 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.
+ */
+/*
+ * Modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
+package org.opensearch.cluster;
+
+import org.opensearch.common.io.stream.StreamInput;
+
+import java.io.IOException;
+
+/**
+ * Thrown when a node join request or a cluster-manager ping reaches a node which is not
+ * currently acting as a cluster-manager or when a cluster state update task is to be executed
+ * on a node that is no longer cluster-manager.
+ *
+ * @opensearch.internal
+ * @deprecated As of 2.2, because supporting inclusive language, replaced by {@link NotClusterManagerException}
+ */
+@Deprecated
+public class NotMasterException extends NotClusterManagerException {
+
+    public NotMasterException(String msg) {
+        super(msg);
+    }
+
+    public NotMasterException(StreamInput in) throws IOException {
+        super(in);
+    }
+
+}

server/src/main/java/org/opensearch/cluster/coordination/NoMasterBlockService.java

@@ -0,0 +1,50 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you 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.
+ */
+/*
+ * Modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
+package org.opensearch.cluster.coordination;
+
+import org.opensearch.common.settings.ClusterSettings;
+import org.opensearch.common.settings.Settings;
+
+/**
+ * Service to block the master node
+ *
+ * @opensearch.internal
+ * @deprecated As of 2.2, because supporting inclusive language, replaced by {@link NoClusterManagerBlockService}
+ */
+@Deprecated
+public class NoMasterBlockService extends NoClusterManagerBlockService {
+
+    public NoMasterBlockService(Settings settings, ClusterSettings clusterSettings) {
+        super(settings, clusterSettings);
+    }
+
+}

server/src/main/java/org/opensearch/cluster/coordination/UnsafeBootstrapMasterCommand.java

@@ -0,0 +1,47 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you 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.
+ */
+/*
+ * Modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
+package org.opensearch.cluster.coordination;
+
+/**
+ * Tool to run an unsafe bootstrap
+ *
+ * @opensearch.internal
+ * @deprecated As of 2.2, because supporting inclusive language, replaced by {@link UnsafeBootstrapClusterManagerCommand}
+ */
+@Deprecated
+public class UnsafeBootstrapMasterCommand extends UnsafeBootstrapClusterManagerCommand {
+
+    UnsafeBootstrapMasterCommand() {
+        super();
+    }
+
+}

server/src/main/java/org/opensearch/cluster/service/MasterService.java

@@ -0,0 +1,52 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you 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.
+ */
+
+/*
+ * Modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
+package org.opensearch.cluster.service;
+
+import org.opensearch.common.settings.ClusterSettings;
+import org.opensearch.common.settings.Settings;
+import org.opensearch.threadpool.ThreadPool;
+
+/**
+ * Main Master Node Service
+ *
+ * @opensearch.internal
+ * @deprecated As of 2.1, because supporting inclusive language, replaced by {@link ClusterManagerService}
+ */
+@Deprecated
+public class MasterService extends ClusterManagerService {
+
+    public MasterService(Settings settings, ClusterSettings clusterSettings, ThreadPool threadPool) {
+        super(settings, clusterSettings, threadPool);
+    }
+
+}

server/src/main/java/org/opensearch/common/settings/ConsistentSettingsService.java

@@ -36,7 +36,7 @@
 import org.apache.logging.log4j.Logger;
 import org.opensearch.cluster.ClusterState;
 import org.opensearch.cluster.ClusterStateUpdateTask;
-import org.opensearch.cluster.LocalNodeClusterManagerListener;
+import org.opensearch.cluster.LocalNodeMasterListener;
 import org.opensearch.cluster.metadata.Metadata;
 import org.opensearch.cluster.service.ClusterService;
 import org.opensearch.common.Priority;
@@ -88,10 +88,10 @@ public ConsistentSettingsService(Settings settings, ClusterService clusterServic
     }
 
     /**
-     * Returns a {@link LocalNodeClusterManagerListener} that will publish hashes of all the settings passed in the constructor. These hashes are
+     * Returns a {@link LocalNodeMasterListener} that will publish hashes of all the settings passed in the constructor. These hashes are
      * published by the cluster-manager node only. Note that this is not designed for {@link SecureSettings} implementations that are mutable.
      */
-    public LocalNodeClusterManagerListener newHashPublisher() {
+    public LocalNodeMasterListener newHashPublisher() {
         // eagerly compute hashes to be published
         final Map<String, String> computedHashesOfConsistentSettings = computeHashesOfConsistentSecureSettings();
         return new HashesPublisher(computedHashesOfConsistentSettings, clusterService);
@@ -246,7 +246,7 @@ private byte[] computeSaltedPBKDF2Hash(byte[] bytes, byte[] salt) {
         }
     }
 
-    static final class HashesPublisher implements LocalNodeClusterManagerListener {
+    static final class HashesPublisher implements LocalNodeMasterListener {
 
         // eagerly compute hashes to be published
         final Map<String, String> computedHashesOfConsistentSettings;