SplitMonitor.java
/*
* 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.
*/
package com.facebook.presto.event;
import com.facebook.airlift.log.Logger;
import com.facebook.presto.eventlistener.EventListenerManager;
import com.facebook.presto.execution.TaskId;
import com.facebook.presto.operator.DriverStats;
import com.facebook.presto.spi.eventlistener.SplitCompletedEvent;
import com.facebook.presto.spi.eventlistener.SplitFailureInfo;
import com.facebook.presto.spi.eventlistener.SplitStatistics;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import javax.annotation.Nullable;
import javax.inject.Inject;
import java.time.Duration;
import java.util.Optional;
import static java.time.Duration.ofMillis;
import static java.time.Instant.ofEpochMilli;
import static java.util.Objects.requireNonNull;
public class SplitMonitor
{
private static final Logger log = Logger.get(SplitMonitor.class);
private final ObjectMapper objectMapper;
private final EventListenerManager eventListenerManager;
@Inject
public SplitMonitor(EventListenerManager eventListenerManager, ObjectMapper objectMapper)
{
this.eventListenerManager = requireNonNull(eventListenerManager, "eventListenerManager is null");
this.objectMapper = requireNonNull(objectMapper, "objectMapper is null");
}
public void splitCompletedEvent(TaskId taskId, DriverStats driverStats)
{
splitCompletedEvent(taskId, driverStats, null, null);
}
public void splitFailedEvent(TaskId taskId, DriverStats driverStats, Throwable cause)
{
splitCompletedEvent(taskId, driverStats, cause.getClass().getName(), cause.getMessage());
}
private void splitCompletedEvent(TaskId taskId, DriverStats driverStats, @Nullable String failureType, @Nullable String failureMessage)
{
Optional<Duration> timeToStart = Optional.empty();
if (driverStats.getStartTimeInMillis() != 0) {
timeToStart = Optional.of(ofMillis(driverStats.getStartTimeInMillis() - driverStats.getCreateTimeInMillis()));
}
Optional<Duration> timeToEnd = Optional.empty();
if (driverStats.getEndTimeInMillis() != 0) {
timeToEnd = Optional.of(ofMillis(driverStats.getEndTimeInMillis() - driverStats.getCreateTimeInMillis()));
}
Optional<SplitFailureInfo> splitFailureMetadata = Optional.empty();
if (failureType != null) {
splitFailureMetadata = Optional.of(new SplitFailureInfo(failureType, failureMessage != null ? failureMessage : ""));
}
try {
eventListenerManager.splitCompleted(
new SplitCompletedEvent(
taskId.getQueryId().toString(),
taskId.getStageExecutionId().getStageId().toString(),
taskId.getStageExecutionId().toString(),
Integer.toString(taskId.getId()),
ofEpochMilli(driverStats.getCreateTimeInMillis()),
Optional.ofNullable(ofEpochMilli(driverStats.getStartTimeInMillis())),
Optional.ofNullable(ofEpochMilli(driverStats.getEndTimeInMillis())),
new SplitStatistics(
ofMillis(driverStats.getTotalCpuTime().toMillis()),
ofMillis(driverStats.getElapsedTime().toMillis()),
ofMillis(driverStats.getQueuedTime().toMillis()),
ofMillis(driverStats.getRawInputReadTime().toMillis()),
driverStats.getRawInputPositions(),
driverStats.getRawInputDataSizeInBytes(),
timeToStart,
timeToEnd),
splitFailureMetadata,
objectMapper.writeValueAsString(driverStats)));
}
catch (JsonProcessingException e) {
log.error(e, "Error processing split completion event for task %s", taskId);
}
}
}