com.netflix.servo.publish.PollRunnable Maven / Gradle / Ivy
/*
* Copyright 2014 Netflix, Inc.
*
* 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.netflix.servo.publish;
import com.netflix.servo.Metric;
import com.netflix.servo.util.Preconditions;
import com.netflix.servo.util.UnmodifiableList;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Collection;
import java.util.List;
/**
* Runnable that will send updates to a collection of observers.
*/
public class PollRunnable implements Runnable {
private static final Logger LOGGER =
LoggerFactory.getLogger(PollRunnable.class);
private final MetricPoller poller;
private final MetricFilter filter;
private final boolean reset;
private final List observers;
/**
* Creates a new runnable instance that executes poll with the given filter
* and sends the metrics to all of the given observers.
*/
public PollRunnable(
MetricPoller poller,
MetricFilter filter,
Collection observers) {
this(poller, filter, false, observers);
}
/**
* Creates a new runnable instance that executes poll with the given filter
* and sends the metrics to all of the given observers.
*/
public PollRunnable(
MetricPoller poller,
MetricFilter filter,
boolean reset,
Collection observers) {
this.poller = Preconditions.checkNotNull(poller, "poller");
this.filter = Preconditions.checkNotNull(filter, "poller");
this.reset = reset;
this.observers = UnmodifiableList.copyOf(observers);
}
/**
* Creates a new runnable instance that executes poll with the given filter
* and sends the metrics to all of the given observers.
*/
public PollRunnable(
MetricPoller poller,
MetricFilter filter,
MetricObserver... observers) {
this(poller, filter, false, UnmodifiableList.copyOf(observers));
}
/**
* {@inheritDoc}
*/
@Override
public void run() {
try {
List metrics = poller.poll(filter, reset);
for (MetricObserver o : observers) {
try {
o.update(metrics);
} catch (Throwable t) {
LOGGER.warn("failed to send metrics to " + o.getName(), t);
}
}
} catch (Throwable t) {
LOGGER.warn("failed to poll metrics", t);
}
}
}