org.apache.flink.table.util.resource.StreamNodeUtil Maven / Gradle / Ivy
/*
* 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.flink.table.util.resource;
import org.apache.flink.streaming.api.graph.StreamGraph;
import org.apache.flink.streaming.api.graph.StreamNode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import java.util.concurrent.atomic.AtomicInteger;
/**
* Util to access Steam Node.
*/
public class StreamNodeUtil {
private static final Logger LOG = LoggerFactory.getLogger(StreamNodeUtil.class);
/**
* Set uid for streamNode in the streamGraph.
* @param streamGraph SteamGraph.
*/
public static Map setUid(StreamGraph streamGraph) {
Map existedUidMap = new HashMap<>();
AtomicInteger atomicInteger = new AtomicInteger(0);
Set orderNodeIdSet = new TreeSet<>();
for (StreamNode streamNode : streamGraph.getStreamNodes()) {
orderNodeIdSet.add(streamNode.getId());
}
for (StreamNode streamNode : streamGraph.getStreamNodes()) {
if (streamNode.getTransformationUID() != null) {
existedUidMap.put(streamNode.getTransformationUID(), streamNode);
}
}
for (Integer nodeId : orderNodeIdSet) {
StreamNode node = streamGraph.getStreamNode(nodeId);
String uid = "table-" + atomicInteger.getAndIncrement();
while (existedUidMap.containsKey(uid)) {
uid = "table-" + atomicInteger.getAndIncrement();
}
setNodeUID(node, uid);
}
return existedUidMap;
}
/**
* Clear append uids.
*/
public static void clearAppendUids(StreamGraph graph, Map existedUidMap) {
for (StreamNode node : graph.getStreamNodes()) {
if (!existedUidMap.containsKey(node.getTransformationUID())) {
setNodeUID(node, null);
}
}
}
/**
* Set uid.
*
* @param streamNode StreamNode
* @param uid String
*/
public static void setNodeUID(StreamNode streamNode, String uid) {
try {
Method method = StreamNode.class.getDeclaredMethod("setTransformationUID",
String.class);
method.setAccessible(true);
method.invoke(streamNode, uid);
} catch (Exception e) {
e.printStackTrace();
LOG.warn("setNodeUID :" + uid + " failed", e);
}
}
/**
* Set max parallelism.
*
* @param streamNode StreamNode
* @param paral Paral
*/
public static void setMaxParallelism(StreamNode streamNode, int paral) {
try {
Method method = StreamNode.class.getDeclaredMethod("setMaxParallelism",
int.class);
method.setAccessible(true);
method.invoke(streamNode, paral);
} catch (Exception e) {
e.printStackTrace();
LOG.warn("setMaxParallelism paral :" + paral + " failed", e);
}
}
/**
* Get max parallelism of stream node.
*
* @param streamNode StreamNode
* @return Max parallelism
*/
public static int getMaxParallelism(StreamNode streamNode) {
try {
Method method = StreamNode.class.getDeclaredMethod("getMaxParallelism");
method.setAccessible(true);
return (int) method.invoke(streamNode);
} catch (Exception e) {
e.printStackTrace();
LOG.warn("getMaxParallelism failed", e);
}
return -1;
}
}