MSQ profile for Brokers and Historicals.

extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/dart/Dart.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF 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.
+ */
+
+package org.apache.druid.msq.dart;
+
+import com.google.inject.BindingAnnotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Binding annotation for implements of interfaces that are Dart (MSQ-on-Broker-and-Historicals) focused.
+ */
+@Target({ElementType.FIELD, ElementType.PARAMETER, ElementType.METHOD})
+@Retention(RetentionPolicy.RUNTIME)
+@BindingAnnotation
+public @interface Dart
+{
+}

extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/dart/DartResourcePermissionMapper.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF 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.
+ */
+
+package org.apache.druid.msq.dart;
+
+import com.google.common.collect.ImmutableList;
+import org.apache.druid.msq.dart.controller.http.DartSqlResource;
+import org.apache.druid.msq.dart.worker.http.DartWorkerResource;
+import org.apache.druid.msq.rpc.ResourcePermissionMapper;
+import org.apache.druid.msq.rpc.WorkerResource;
+import org.apache.druid.server.security.Action;
+import org.apache.druid.server.security.Resource;
+import org.apache.druid.server.security.ResourceAction;
+
+import java.util.List;
+
+public class DartResourcePermissionMapper implements ResourcePermissionMapper
+{
+  /**
+   * Permissions for admin APIs in {@link DartWorkerResource} and {@link WorkerResource}. Note that queries from
+   * end users go through {@link DartSqlResource}, which wouldn't use these mappings.
+   */
+  @Override
+  public List<ResourceAction> getAdminPermissions()
+  {
+    return ImmutableList.of(
+        new ResourceAction(Resource.STATE_RESOURCE, Action.READ),
+        new ResourceAction(Resource.STATE_RESOURCE, Action.WRITE)
+    );
+  }
+
+  /**
+   * Permissions for per-query APIs in {@link DartWorkerResource} and {@link WorkerResource}. Note that queries from
+   * end users go through {@link DartSqlResource}, which wouldn't use these mappings.
+   */
+  @Override
+  public List<ResourceAction> getQueryPermissions(String queryId)
+  {
+    return getAdminPermissions();
+  }
+}

extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/dart/controller/ControllerHolder.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF 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.
+ */
+
+package org.apache.druid.msq.dart.controller;
+
+import com.google.common.base.Preconditions;
+import org.apache.druid.msq.dart.worker.DartWorkerClient;
+import org.apache.druid.msq.dart.worker.WorkerId;
+import org.apache.druid.msq.exec.Controller;
+import org.apache.druid.msq.exec.ControllerContext;
+import org.apache.druid.msq.exec.QueryListener;
+import org.apache.druid.msq.indexing.error.MSQErrorReport;
+import org.apache.druid.msq.indexing.error.WorkerFailedFault;
+import org.apache.druid.server.security.AuthenticationResult;
+import org.joda.time.DateTime;
+
+import java.util.concurrent.atomic.AtomicReference;
+
+/**
+ * Holder for {@link Controller}, stored in {@link DartControllerRegistry}.
+ */
+public class ControllerHolder
+{
+  public enum State
+  {
+    /**
+     * Query has been accepted, but not yet {@link Controller#run(QueryListener)}.
+     */
+    ACCEPTED,
+
+    /**
+     * Query has had {@link Controller#run(QueryListener)} called.
+     */
+    RUNNING,
+
+    /**
+     * Query has been canceled.
+     */
+    CANCELED
+  }
+
+  private final Controller controller;
+  private final ControllerContext controllerContext;
+  private final String sqlQueryId;
+  private final String sql;
+  private final AuthenticationResult authenticationResult;
+  private final DateTime startTime;
+  private final AtomicReference<State> state = new AtomicReference<>(State.ACCEPTED);
+
+  public ControllerHolder(
+      final Controller controller,
+      final ControllerContext controllerContext,
+      final String sqlQueryId,
+      final String sql,
+      final AuthenticationResult authenticationResult,
+      final DateTime startTime
+  )
+  {
+    this.controller = Preconditions.checkNotNull(controller, "controller");
+    this.controllerContext = controllerContext;
+    this.sqlQueryId = Preconditions.checkNotNull(sqlQueryId, "sqlQueryId");
+    this.sql = sql;
+    this.authenticationResult = authenticationResult;
+    this.startTime = Preconditions.checkNotNull(startTime, "startTime");
+  }
+
+  public Controller getController()
+  {
+    return controller;
+  }
+
+  public String getSqlQueryId()
+  {
+    return sqlQueryId;
+  }
+
+  public String getSql()
+  {
+    return sql;
+  }
+
+  public AuthenticationResult getAuthenticationResult()
+  {
+    return authenticationResult;
+  }
+
+  public DateTime getStartTime()
+  {
+    return startTime;
+  }
+
+  public State getState()
+  {
+    return state.get();
+  }
+
+  /**
+   * Call when a worker has gone offline. Closes its client and sends a {@link Controller#workerError}
+   * to the controller.
+   */
+  public void workerOffline(final WorkerId workerId)
+  {
+    final String workerIdString = workerId.toString();
+
+    if (controllerContext instanceof DartControllerContext) {
+      // For DartControllerContext, newWorkerClient() returns the same instance every time.
+      // This will always be DartControllerContext in production; the instanceof check is here because certain
+      // tests use a different context class.
+      ((DartWorkerClient) controllerContext.newWorkerClient()).closeClient(workerId.getHostAndPort());
+    }
+
+    if (controller.hasWorker(workerIdString)) {
+      controller.workerError(
+          MSQErrorReport.fromFault(
+              workerIdString,
+              workerId.getHostAndPort(),
+              null,
+              new WorkerFailedFault(workerIdString, "Worker went offline")
+          )
+      );
+    }
+  }
+
+  /**
+   * Places this holder into {@link State#CANCELED}. Calls {@link Controller#stop()} if it was previously in
+   * state {@link State#RUNNING}.
+   */
+  public void cancel()
+  {
+    if (state.getAndSet(State.CANCELED) == State.RUNNING) {
+      controller.stop();
+    }
+  }
+
+  /**
+   * Calls {@link Controller#run(QueryListener)}, and returns true, if this holder was previously in state
+   * {@link State#ACCEPTED}. Otherwise returns false.
+   *
+   * @return whether {@link Controller#run(QueryListener)} was called.
+   */
+  public boolean run(final QueryListener listener) throws Exception
+  {
+    if (state.compareAndSet(State.ACCEPTED, State.RUNNING)) {
+      controller.run(listener);
+      return true;
+    } else {
+      return false;
+    }
+  }
+}

extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/dart/controller/ControllerMessageListener.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF 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.
+ */
+
+package org.apache.druid.msq.dart.controller;
+
+import com.google.inject.Inject;
+import org.apache.druid.messages.client.MessageListener;
+import org.apache.druid.msq.dart.controller.messages.ControllerMessage;
+import org.apache.druid.msq.dart.worker.WorkerId;
+import org.apache.druid.msq.exec.Controller;
+import org.apache.druid.msq.indexing.error.MSQErrorReport;
+import org.apache.druid.server.DruidNode;
+
+/**
+ * Listener for worker-to-controller messages.
+ * Also responsible for calling {@link Controller#workerError(MSQErrorReport)} when a worker server goes away.
+ */
+public class ControllerMessageListener implements MessageListener<ControllerMessage>
+{
+  private final DartControllerRegistry controllerRegistry;
+
+  @Inject
+  public ControllerMessageListener(final DartControllerRegistry controllerRegistry)
+  {
+    this.controllerRegistry = controllerRegistry;
+  }
+
+  @Override
+  public void messageReceived(ControllerMessage message)
+  {
+    final ControllerHolder holder = controllerRegistry.get(message.getQueryId());
+    if (holder != null) {
+      message.handle(holder.getController());
+    }
+  }
+
+  @Override
+  public void serverAdded(DruidNode node)
+  {
+    // Nothing to do.
+  }
+
+  @Override
+  public void serverRemoved(DruidNode node)
+  {
+    for (final ControllerHolder holder : controllerRegistry.getAllHolders()) {
+      final Controller controller = holder.getController();
+      final WorkerId workerId = WorkerId.fromDruidNode(node, controller.queryId());
+      holder.workerOffline(workerId);
+    }
+  }
+}