org.apache.druid.server.emitter.ExtraServiceDimensions Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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.apache.druid.server.emitter;

import com.google.inject.BindingAnnotation;
import org.apache.druid.guice.annotations.PublicApi;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Annotation to inject extra dimensions, added to all events, emitted via {@link EmitterModule#getServiceEmitter}.
 *
 * For example, write this in a body of {@link com.google.inject.Module#configure} of your extension module):
 *
 * MapBinder extraDims =
 *     MapBinder.newMapBinder(binder, String.class, String.class, ExtraServiceDimensions.class);
 * extraDims.addBinding("foo").toInstance("bar");
 */
@Target(ElementType.PARAMETER)
@Retention(RetentionPolicy.RUNTIME)
@BindingAnnotation
@PublicApi
public @interface ExtraServiceDimensions
{
}