SinkContext.java

// Copyright 2016 Twitter. All rights reserved.
//
// 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 com.twitter.heron.spi.metricsmgr.sink;

/**
 * Context needed for an IMetricsSink to init.
 * <p>
 * We distinguish config and context carefully:
 * Config is populated from yaml file and would not be changed anymore,
 * while context is populated in run-time.
 */

public interface SinkContext {
  String getTopologyName();

  String getMetricsMgrId();

  String getSinkId();

  void exportCountMetric(String metricName, long delta);
}