co.cask.cdap.common.metrics.MetricsContexts.java Source code

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Here is the source code for co.cask.cdap.common.metrics.MetricsContexts.java

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/*
 * Copyright  2015 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.common.metrics;

import co.cask.cdap.common.conf.Constants;
import co.cask.cdap.proto.Id;
import com.google.common.collect.ImmutableMap;

import java.util.Map;

/**
 * Provides ways to obtain the context for certain metrics.
 */
public final class MetricsContexts {

    private MetricsContexts() {
    }

    // TODO: Use Id.Flow.Flowlet
    public static Map<String, String> forFlowlet(Id.Program flowId, String flowletId) {
        return ImmutableMap.of(Constants.Metrics.Tag.NAMESPACE, flowId.getNamespaceId(), Constants.Metrics.Tag.APP,
                flowId.getApplicationId(), Constants.Metrics.Tag.FLOW, flowId.getId(),
                Constants.Metrics.Tag.FLOWLET, flowletId);
    }

    public static Map<String, String> forService(Id.Program id) {
        return ImmutableMap.of(Constants.Metrics.Tag.NAMESPACE, id.getNamespaceId(), Constants.Metrics.Tag.APP,
                id.getApplicationId(), Constants.Metrics.Tag.SERVICE, id.getId());
    }

    public static Map<String, String> forServiceHandler(Id.Program id, String handlerId) {
        return ImmutableMap.of(Constants.Metrics.Tag.NAMESPACE, id.getNamespaceId(), Constants.Metrics.Tag.APP,
                id.getApplicationId(), Constants.Metrics.Tag.SERVICE, id.getId(), Constants.Metrics.Tag.HANDLER,
                handlerId);
    }
}