co.cask.cdap.operations.OperationalStatsUtils.java Source code

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Here is the source code for co.cask.cdap.operations.OperationalStatsUtils.java

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/*
 * Copyright  2016 Cask Data, 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 co.cask.cdap.operations;

import com.google.common.base.Strings;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.annotation.Nullable;

/**
 * Utilities for use in collection and retrieval of {@link OperationalStats}.
 */
public final class OperationalStatsUtils {
    private static final Logger LOG = LoggerFactory.getLogger(OperationalStatsUtils.class);

    public static final String JMX_DOMAIN = "co.cask.cdap.operations";
    public static final String SERVICE_NAME_KEY = "name";
    public static final String STAT_TYPE_KEY = "type";
    public static final String STAT_TYPE_INFO = "info";

    @Nullable
    static OperationalExtensionId getOperationalExtensionId(OperationalStats operationalStats) {
        String serviceName = operationalStats.getServiceName();
        String statType = operationalStats.getStatType();
        if (Strings.isNullOrEmpty(serviceName) && Strings.isNullOrEmpty(statType)) {
            return null;
        }
        if (!Strings.isNullOrEmpty(serviceName)) {
            serviceName = serviceName.toLowerCase();
        } else {
            LOG.warn(
                    "Found operational stat without service name - {}. This stat will not be discovered by service name.",
                    operationalStats.getClass().getName());
        }
        if (!Strings.isNullOrEmpty(statType)) {
            statType = statType.toLowerCase();
        } else {
            LOG.warn(
                    "Found operational stat without stat type - {}. This stat will not be discovered by stat type.",
                    operationalStats.getClass().getName());
        }
        return new OperationalExtensionId(serviceName, statType);
    }

    private OperationalStatsUtils() {
        // prevent instantiation.
    }
}