org.apache.kafka.connect.storage.MemoryConfigBackingStore Maven / Gradle / Ivy
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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,
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* 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.WorkerConfigTransformer;
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.List;
import java.util.Map;
import java.util.TreeMap;
import java.util.concurrent.TimeUnit;
public class MemoryConfigBackingStore implements ConfigBackingStore {
private Map connectors = new HashMap<>();
private UpdateListener updateListener;
private WorkerConfigTransformer configTransformer;
public MemoryConfigBackingStore() {
}
public MemoryConfigBackingStore(WorkerConfigTransformer configTransformer) {
this.configTransformer = configTransformer;
}
@Override
public synchronized void start() {
}
@Override
public synchronized void stop() {
}
@Override
public synchronized ClusterConfigState snapshot() {
Map connectorTaskCounts = new HashMap<>();
Map> connectorConfigs = new HashMap<>();
Map connectorTargetStates = new HashMap<>();
Map> taskConfigs = new HashMap<>();
for (Map.Entry 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.emptySet(),
configTransformer);
}
@Override
public synchronized boolean contains(String connector) {
return connectors.containsKey(connector);
}
@Override
public synchronized void putConnectorConfig(String connector, Map 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 taskIds = new HashSet<>(state.taskConfigs.keySet());
state.taskConfigs.clear();
if (updateListener != null)
updateListener.onTaskConfigUpdate(taskIds);
}
@Override
public synchronized void putTaskConfigs(String connector, List