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FnApiMonitoringInfoToCounterUpdateTransformer.java
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FnApiMonitoringInfoToCounterUpdateTransformer.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.beam.runners.dataflow.worker.fn.control;
import com.google.api.services.dataflow.model.CounterUpdate;
import com.google.common.annotations.VisibleForTesting;
import java.util.HashMap;
import java.util.Map;
import org.apache.beam.model.fnexecution.v1.BeamFnApi.MonitoringInfo;
import org.apache.beam.runners.core.metrics.SpecMonitoringInfoValidator;
import org.apache.beam.runners.dataflow.worker.DataflowExecutionContext.DataflowStepContext;
/**
* Generic MonitoringInfo to CounterUpdate transformer for FnApi.
*
* Delegates work to other transformers implementations for relevant counter types.
*/
public class FnApiMonitoringInfoToCounterUpdateTransformer
implements MonitoringInfoToCounterUpdateTransformer {
final UserMonitoringInfoToCounterUpdateTransformer userCounterTransformer;
final Map<String, MonitoringInfoToCounterUpdateTransformer> counterTransformers = new HashMap<>();
public FnApiMonitoringInfoToCounterUpdateTransformer(
Map<String, DataflowStepContext> stepContextMap) {
SpecMonitoringInfoValidator specValidator = new SpecMonitoringInfoValidator();
this.userCounterTransformer =
new UserMonitoringInfoToCounterUpdateTransformer(specValidator, stepContextMap);
MSecMonitoringInfoToCounterUpdateTransformer msecTransformer =
new MSecMonitoringInfoToCounterUpdateTransformer(specValidator, stepContextMap);
for (String urn : msecTransformer.getSupportedUrns()) {
this.counterTransformers.put(urn, msecTransformer);
}
}
/** Allows for injection of user and generic counter transformers for more convenient testing. */
@VisibleForTesting
public FnApiMonitoringInfoToCounterUpdateTransformer(
UserMonitoringInfoToCounterUpdateTransformer userCounterTransformer,
Map<String, MonitoringInfoToCounterUpdateTransformer> counterTransformers) {
this.userCounterTransformer = userCounterTransformer;
this.counterTransformers.putAll(counterTransformers);
}
@Override
public CounterUpdate transform(MonitoringInfo src) {
String urn = src.getUrn();
if (urn.startsWith(userCounterTransformer.getSupportedUrnPrefix())) {
return userCounterTransformer.transform(src);
}
MonitoringInfoToCounterUpdateTransformer transformer = counterTransformers.get(urn);
return transformer == null ? null : transformer.transform(src);
}
}