/
LoggerDispatcher.java
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/
LoggerDispatcher.java
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/*
* Copyright 2018 Expedia, 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.expedia.www.haystack.client.dispatchers;
import com.expedia.www.haystack.client.Span;
import com.expedia.www.haystack.client.metrics.*;
import com.expedia.www.haystack.client.metrics.Timer.Sample;
import org.apache.commons.lang3.builder.ReflectionToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.util.Arrays;
public class LoggerDispatcher implements Dispatcher {
private final Logger logger;
private final Timer dispatchTimer;
private final Counter closeCounter;
private final Counter flushCounter;
public LoggerDispatcher(Metrics metrics, Logger logger) {
if (logger == null) {
this.logger = LoggerFactory.getLogger(this.getClass());
} else {
this.logger = logger;
}
this.dispatchTimer = Timer.builder("dispatch").register(metrics);
this.closeCounter = Counter.builder("close").register(metrics);
this.flushCounter = Counter.builder("flush").register(metrics);
}
@Override
public String toString() {
return new ReflectionToStringBuilder(this, ToStringStyle.SIMPLE_STYLE)
.setExcludeFieldNames("metrics")
.toString();
}
@Override
public void dispatch(Span span) {
try (Sample timer = dispatchTimer.start()) {
logger.info("{}", span);
}
}
@Override
public void flush() throws IOException {
// do nothing
flushCounter.increment();
}
@Override
public void close() throws IOException {
// do nothing
closeCounter.increment();
}
public static final class Builder {
private final Metrics metrics;
private Logger logger;
public Builder(MetricsRegistry registry) {
this(new Metrics(registry, Dispatcher.class.getName(), Arrays.asList(new Tag("type", "logger"))));
}
public Builder(Metrics metrics) {
this.metrics = metrics;
}
public Builder withLogger(String loggerName) {
this.logger = LoggerFactory.getLogger(loggerName);
return this;
}
public Builder withLogger(Logger logger) {
this.logger = logger;
return this;
}
public LoggerDispatcher build() {
return new LoggerDispatcher(metrics, logger);
}
}
}