YARN-8549 Adding a NoOp timeline writer and reader plugin classes for ATSv2. Contributed by Prabha Manepalli.
This commit is contained in:
Vrushali C
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.yarn.server.timelineservice.storage;
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import org.apache.hadoop.service.AbstractService;
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import org.apache.hadoop.yarn.api.records.timelineservice.TimelineEntity;
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import org.apache.hadoop.yarn.server.timelineservice.reader.TimelineDataToRetrieve;
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import org.apache.hadoop.yarn.server.timelineservice.reader.TimelineEntityFilters;
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import org.apache.hadoop.yarn.server.timelineservice.reader.TimelineReaderContext;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.IOException;
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import java.util.HashSet;
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import java.util.Set;
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/**
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* Stub based implementation for TimelineReader. This implementation will
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* not provide a complete implementation of all the necessary features. This
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* implementation is provided solely for basic testing purposes.
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*/
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public class NoOpTimelineReaderImpl extends AbstractService
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implements TimelineReader {
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private static final Logger LOG =
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LoggerFactory.getLogger(NoOpTimelineReaderImpl.class);
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public NoOpTimelineReaderImpl() {
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super(NoOpTimelineReaderImpl.class.getName());
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LOG.info("NoOpTimelineReader is configured. Response to all the read " +
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"requests would be empty");
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}
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@Override
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public TimelineEntity getEntity(TimelineReaderContext context,
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TimelineDataToRetrieve dataToRetrieve) throws IOException {
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if(LOG.isDebugEnabled()){
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LOG.debug("NoOpTimelineReader is configured. Response to all the read " +
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"requests would be empty");
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}
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return new TimelineEntity();
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}
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@Override
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public Set<TimelineEntity> getEntities(TimelineReaderContext context,
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TimelineEntityFilters filters, TimelineDataToRetrieve dataToRetrieve)
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throws IOException {
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if(LOG.isDebugEnabled()){
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LOG.debug("NoOpTimelineReader is configured. Response to all the read " +
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"requests would be empty");
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}
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return new HashSet<>();
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}
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@Override
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public Set<String> getEntityTypes(TimelineReaderContext context)
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throws IOException {
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if(LOG.isDebugEnabled()){
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LOG.debug("NoOpTimelineReader is configured. Response to all the read " +
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"requests would be empty");
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}
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return new HashSet<>();
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}
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}
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@ -0,0 +1,88 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.yarn.server.timelineservice.storage;
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import org.apache.hadoop.security.UserGroupInformation;
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import org.apache.hadoop.service.AbstractService;
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import org.apache.hadoop.yarn.api.records.timelineservice.TimelineDomain;
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import org.apache.hadoop.yarn.api.records.timelineservice.TimelineEntities;
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import org.apache.hadoop.yarn.api.records.timelineservice.TimelineEntity;
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import org.apache.hadoop.yarn.api.records.timelineservice.TimelineWriteResponse;
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import org.apache.hadoop.yarn.server.timelineservice.collector.TimelineCollectorContext;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.IOException;
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/**
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* Stub based implementation for TimelineWriter. This implementation will
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* not provide a complete implementation of all the necessary features. This
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* implementation is provided solely for basic testing purposes.
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*/
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public class NoOpTimelineWriterImpl extends AbstractService implements
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TimelineWriter{
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private static final Logger LOG =
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LoggerFactory.getLogger(NoOpTimelineWriterImpl.class);
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public NoOpTimelineWriterImpl() {
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super(NoOpTimelineWriterImpl.class.getName());
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LOG.info("NoOpTimelineWriter is configured. All the writes to the backend" +
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" are ignored");
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}
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@Override
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public TimelineWriteResponse write(TimelineCollectorContext context,
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TimelineEntities data,
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UserGroupInformation callerUgi)
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throws IOException {
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if(LOG.isDebugEnabled()){
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LOG.debug("NoOpTimelineWriter is configured. Not storing " +
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"TimelineEntities.");
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}
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return new TimelineWriteResponse();
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}
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@Override
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public TimelineWriteResponse write(TimelineCollectorContext context,
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TimelineDomain domain) throws IOException {
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if(LOG.isDebugEnabled()){
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LOG.debug("NoOpTimelineWriter is configured. Not storing " +
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"TimelineEntities.");
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}
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return new TimelineWriteResponse();
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}
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@Override
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public TimelineWriteResponse aggregate(TimelineEntity data,
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TimelineAggregationTrack track)
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throws IOException {
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if(LOG.isDebugEnabled()){
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LOG.debug("NoOpTimelineWriter is configured. Not aggregating " +
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"TimelineEntities.");
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}
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return new TimelineWriteResponse();
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}
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@Override
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public void flush() throws IOException {
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if(LOG.isDebugEnabled()){
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LOG.debug("NoOpTimelineWriter is configured. Ignoring flush call");
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}
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}
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}
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