| /** |
| * 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 |
| * <p/> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p/> |
| * 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.kafka.connect.storage; |
| |
| import org.apache.kafka.connect.runtime.TargetState; |
| import org.apache.kafka.connect.runtime.WorkerConfig; |
| import org.apache.kafka.connect.runtime.distributed.ClusterConfigState; |
| import org.apache.kafka.connect.util.ConnectorTaskId; |
| |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.concurrent.TimeUnit; |
| |
| public class MemoryConfigBackingStore implements ConfigBackingStore { |
| |
| private Map<String, ConnectorState> connectors = new HashMap<>(); |
| private UpdateListener updateListener; |
| |
| @Override |
| public void configure(WorkerConfig config) { |
| } |
| |
| @Override |
| public synchronized void start() { |
| } |
| |
| @Override |
| public synchronized void stop() { |
| } |
| |
| @Override |
| public synchronized ClusterConfigState snapshot() { |
| Map<String, Integer> connectorTaskCounts = new HashMap<>(); |
| Map<String, Map<String, String>> connectorConfigs = new HashMap<>(); |
| Map<String, TargetState> connectorTargetStates = new HashMap<>(); |
| Map<ConnectorTaskId, Map<String, String>> taskConfigs = new HashMap<>(); |
| |
| for (Map.Entry<String, ConnectorState> connectorStateEntry : connectors.entrySet()) { |
| String connector = connectorStateEntry.getKey(); |
| ConnectorState connectorState = connectorStateEntry.getValue(); |
| connectorTaskCounts.put(connector, connectorState.taskConfigs.size()); |
| connectorConfigs.put(connector, connectorState.connConfig); |
| connectorTargetStates.put(connector, connectorState.targetState); |
| taskConfigs.putAll(connectorState.taskConfigs); |
| } |
| |
| return new ClusterConfigState( |
| ClusterConfigState.NO_OFFSET, |
| connectorTaskCounts, |
| connectorConfigs, |
| connectorTargetStates, |
| taskConfigs, |
| Collections.<String>emptySet()); |
| } |
| |
| @Override |
| public synchronized boolean contains(String connector) { |
| return connectors.containsKey(connector); |
| } |
| |
| @Override |
| public synchronized void putConnectorConfig(String connector, Map<String, String> properties) { |
| ConnectorState state = connectors.get(connector); |
| if (state == null) |
| connectors.put(connector, new ConnectorState(properties)); |
| else |
| state.connConfig = properties; |
| |
| if (updateListener != null) |
| updateListener.onConnectorConfigUpdate(connector); |
| } |
| |
| @Override |
| public synchronized void removeConnectorConfig(String connector) { |
| ConnectorState state = connectors.remove(connector); |
| |
| if (updateListener != null && state != null) |
| updateListener.onConnectorConfigRemove(connector); |
| } |
| |
| @Override |
| public synchronized void removeTaskConfigs(String connector) { |
| ConnectorState state = connectors.get(connector); |
| if (state == null) |
| throw new IllegalArgumentException("Cannot remove tasks for non-existing connector"); |
| |
| HashSet<ConnectorTaskId> taskIds = new HashSet<>(state.taskConfigs.keySet()); |
| state.taskConfigs.clear(); |
| |
| if (updateListener != null) |
| updateListener.onTaskConfigUpdate(taskIds); |
| } |
| |
| @Override |
| public synchronized void putTaskConfigs(String connector, Map<ConnectorTaskId, Map<String, String>> configs) { |
| ConnectorState state = connectors.get(connector); |
| if (state == null) |
| throw new IllegalArgumentException("Cannot put tasks for non-existing connector"); |
| |
| state.taskConfigs = configs; |
| |
| if (updateListener != null) |
| updateListener.onTaskConfigUpdate(configs.keySet()); |
| } |
| |
| @Override |
| public void refresh(long timeout, TimeUnit unit) { |
| } |
| |
| @Override |
| public synchronized void putTargetState(String connector, TargetState state) { |
| ConnectorState connectorState = connectors.get(connector); |
| if (connectorState == null) |
| throw new IllegalArgumentException("No connector `" + connector + "` configured"); |
| |
| connectorState.targetState = state; |
| |
| if (updateListener != null) |
| updateListener.onConnectorTargetStateChange(connector); |
| } |
| |
| @Override |
| public synchronized void setUpdateListener(UpdateListener listener) { |
| this.updateListener = listener; |
| } |
| |
| private static class ConnectorState { |
| private TargetState targetState; |
| private Map<String, String> connConfig; |
| private Map<ConnectorTaskId, Map<String, String>> taskConfigs; |
| |
| public ConnectorState(Map<String, String> connConfig) { |
| this.targetState = TargetState.STARTED; |
| this.connConfig = connConfig; |
| this.taskConfigs = new HashMap<>(); |
| } |
| } |
| } |