/*
* (C) Copyright 2013 Nuxeo SA (http://nuxeo.com/) and others.
*
* 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.
*
* Contributors:
* Delbosc Benoit
*/
package org.nuxeo.runtime.metrics;
import java.time.Instant;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.nuxeo.runtime.model.ComponentContext;
import org.nuxeo.runtime.model.ComponentInstance;
import org.nuxeo.runtime.model.DefaultComponent;
import com.codahale.metrics.Counter;
import com.codahale.metrics.MetricRegistry;
import com.codahale.metrics.SharedMetricRegistries;
public class MetricsServiceImpl extends DefaultComponent implements MetricsService {
protected static final Log log = LogFactory.getLog(MetricsServiceImpl.class);
protected MetricRegistry registry = SharedMetricRegistries.getOrCreate(MetricsService.class.getName());
private final Counter instanceUp = registry.counter(MetricRegistry.name("nuxeo", "instance-up"));
protected static final String CONFIGURATION_EP = "configuration";
public static MetricsDescriptor config;
public MetricsServiceImpl() {
super();
}
@Override
public void registerContribution(Object contribution, String extensionPoint, ComponentInstance contributor) {
if (CONFIGURATION_EP.equals(extensionPoint) && contribution instanceof MetricsDescriptor) {
log.debug("Registering metrics contribution");
config = (MetricsDescriptor) contribution;
} else {
log.warn("Unknown EP " + extensionPoint);
}
}
@Override
public void activate(ComponentContext context) {
SharedMetricRegistries.getOrCreate(MetricsService.class.getName());;
}
@Override
public void deactivate(ComponentContext context) {
SharedMetricRegistries.remove(MetricsService.class.getName());;
log.debug("Deactivate component.");
}
@Override
public void applicationStarted(ComponentContext context) {
if (config == null) {
// Use a default config
config = new MetricsDescriptor();
}
log.info("Setting up metrics configuration");
config.enable(registry);
instanceUp.inc();
}
@Override
public void applicationStopped(ComponentContext context, Instant deadline) {
try {
config.disable(registry);
} finally {
instanceUp.dec();
}
}
@Override
public <T> T getAdapter(Class<T> adapter) {
if (adapter.isAssignableFrom(MetricRegistry.class)) {
return adapter.cast(registry);
}
return super.getAdapter(adapter);
}
}