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/*
* ===============================LICENSE_START======================================
* dcae-analytics
* ================================================================================
* Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed 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.
* ============================LICENSE_END===========================================
*/
package org.openecomp.dcae.apod.analytics.cdap.plugins.streaming.dmaap;
import co.cask.cdap.api.annotation.Description;
import co.cask.cdap.api.annotation.Name;
import co.cask.cdap.api.annotation.Plugin;
import co.cask.cdap.api.data.format.StructuredRecord;
import co.cask.cdap.etl.api.PipelineConfigurer;
import co.cask.cdap.etl.api.streaming.StreamingContext;
import co.cask.cdap.etl.api.streaming.StreamingSource;
import org.apache.spark.storage.StorageLevel;
import org.apache.spark.streaming.api.java.JavaDStream;
import org.openecomp.dcae.apod.analytics.cdap.common.exception.CDAPSettingsException;
import org.openecomp.dcae.apod.analytics.cdap.plugins.domain.config.dmaap.DMaaPMRSourcePluginConfig;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A mock implementation of DMaaP MR Receiver which sends mock ves messages
* <p>
* @author Rajiv Singla . Creation Date: 2/15/2017.
*/
@Plugin(type = StreamingSource.PLUGIN_TYPE)
@Name("MockDMaaPMRSource")
@Description("Fetches DMaaP MR Messages at regular intervals")
public class MockDMaaPMRSource extends StreamingSource<StructuredRecord> {
private static final Logger LOG = LoggerFactory.getLogger(MockDMaaPMRSource.class);
private static final long serialVersionUID = 1L;
private final DMaaPMRSourcePluginConfig pluginConfig;
public MockDMaaPMRSource(final DMaaPMRSourcePluginConfig pluginConfig) {
LOG.debug("Creating DMaaP MR Source plugin with plugin Config: {}", pluginConfig);
this.pluginConfig = pluginConfig;
}
@Override
public void configurePipeline(PipelineConfigurer pipelineConfigurer) {
final Integer pollingInterval = pluginConfig.getPollingInterval();
if (pollingInterval == null) {
final String errorMessage = "Polling Interval field must be present";
throw new CDAPSettingsException(errorMessage, LOG, new IllegalArgumentException(errorMessage));
} else {
LOG.info("Mock Message will be send every ms: {}", pollingInterval);
}
}
@Override
public JavaDStream<StructuredRecord> getStream(final StreamingContext streamingContext) throws Exception {
return streamingContext.getSparkStreamingContext().receiverStream(
new MockDMaaPMRReceiver(StorageLevel.MEMORY_ONLY(), pluginConfig));
}
}
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