com.nimbusds.infinispan.persistence.dynamodb.DynamoDBMeters Maven / Gradle / Ivy

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package com.nimbusds.infinispan.persistence.dynamodb;


import com.codahale.metrics.Counter;
import com.codahale.metrics.MetricRegistry;
import com.codahale.metrics.Timer;
import net.jcip.annotations.ThreadSafe;

import com.nimbusds.common.monitor.MonitorRegistries;


/**
 * DynamoDB meters (timers and counters).
 */
@ThreadSafe
class DynamoDBMeters {


	/**
	 * Times DynamoDB get operations.
	 */
	final Timer getTimer = new Timer();


	/**
	 * Times DynamoDB put operations.
	 */
	final Timer putTimer = new Timer();


	/**
	 * Times DynamoDB delete operations.
	 */
	final Timer deleteTimer = new Timer();


	/**
	 * Times DynamoDB item process operations.
	 */
	final Timer processTimer = new Timer();


	/**
	 * Times DynamoDB purge expired Infinispan entries operations.
	 */
	final Timer purgeTimer = new Timer();
	
	
	/**
	 * Counts loaded DynamoDB items with invalid HMAC SHA-256.
	 */
	final Counter invalidItemHmacCounter = new Counter();


	/**
	 * Creates a new set of DynamoDB meters and puts them into the
	 * singleton {@link MonitorRegistries}.
	 *
	 * @param prefix The prefix for the meter names. Must not be
	 *               {@code null}.
	 */
	DynamoDBMeters(final String prefix) {
		MonitorRegistries.register(prefix + "dynamoDB.getTimer", getTimer);
		MonitorRegistries.register(prefix + "dynamoDB.putTimer", putTimer);
		MonitorRegistries.register(prefix + "dynamoDB.deleteTimer", deleteTimer);
		MonitorRegistries.register(prefix + "dynamoDB.processTimer", processTimer);
		MonitorRegistries.register(prefix + "dynamoDB.purgeTimer", purgeTimer);
		MonitorRegistries.register(prefix + "dynamoDB.invalidItemHmacCounter", invalidItemHmacCounter);
	}
	
	
	/**
	 * Creates a new set of DynamoDB meters and puts them into the
	 * specified registry.
	 *
	 * @param prefix         The prefix for the meter names. Must not be
	 *                       {@code null}.
	 * @param metricRegistry The metrics registry. Must not be
	 *                       {@code null}.
	 */
	DynamoDBMeters(final String prefix, final MetricRegistry metricRegistry) {
		metricRegistry.register(prefix + "dynamoDB.getTimer", getTimer);
		metricRegistry.register(prefix + "dynamoDB.putTimer", putTimer);
		metricRegistry.register(prefix + "dynamoDB.deleteTimer", deleteTimer);
		metricRegistry.register(prefix + "dynamoDB.processTimer", processTimer);
		metricRegistry.register(prefix + "dynamoDB.purgeTimer", purgeTimer);
		metricRegistry.register(prefix + "dynamoDB.invalidItemHmacCounter", invalidItemHmacCounter);
	}
}