org.sakaiproject.nakamura.util.telemetry.TelemetryCounter.java Source code

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Here is the source code for org.sakaiproject.nakamura.util.telemetry.TelemetryCounter.java

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/**
 * Licensed to the Sakai Foundation (SF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The SF licenses this file
 * to you 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 org.sakaiproject.nakamura.util.telemetry;

import com.google.common.collect.Maps;

import java.util.concurrent.ConcurrentMap;

public class TelemetryCounter {
    protected static ConcurrentMap<String, TelemetryEntry> counters = Maps.newConcurrentMap();

    public static void clear() {
        counters = Maps.newConcurrentMap();
    }

    public static void incrementValue(String moduleName, String serviceName, String metricName) {
        String compositeKey = moduleName + "::" + serviceName;
        TelemetryEntry entry = counters.get(compositeKey);
        Long value;
        if (entry == null) {
            counters.put(compositeKey, new TelemetryEntry(moduleName, serviceName, Status.OK));
            entry = counters.get(compositeKey);
        }
        TelemetryData telemetryData = entry.getMetric(metricName);
        if (telemetryData == null) {
            value = Long.valueOf(1);
        } else {
            if (!"L".equalsIgnoreCase(telemetryData.type)) {
                throw new IllegalArgumentException("Attempting to increment a metric that isn't Long type.");
            }
            value = Long.parseLong(telemetryData.value) + 1;
        }
        entry.addMetric(metricName, new TelemetryData(value));
    }

    public static enum Status {
        BAD, WARNING, OK
    }
}