| /* |
| * 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.beam.sdk.metrics; |
| |
| import static org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkArgument; |
| |
| import com.google.auto.value.AutoValue; |
| import java.io.Serializable; |
| import org.apache.beam.sdk.annotations.Experimental; |
| import org.apache.beam.sdk.annotations.Experimental.Kind; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Strings; |
| |
| /** |
| * The name of a metric consists of a {@link #getNamespace} and a {@link #getName}. The {@link |
| * #getNamespace} allows grouping related metrics together and also prevents collisions between |
| * multiple metrics with the same name. |
| */ |
| @Experimental(Kind.METRICS) |
| @AutoValue |
| public abstract class MetricName implements Serializable { |
| |
| /** The namespace associated with this metric. */ |
| public abstract String getNamespace(); |
| |
| /** |
| * The namespace associated with this metric. |
| * |
| * @deprecated to be removed once Dataflow no longer requires this method. |
| */ |
| @Deprecated |
| public String namespace() { |
| return getNamespace(); |
| } |
| |
| /** The name of this metric. */ |
| public abstract String getName(); |
| |
| @Override |
| public String toString() { |
| return String.format("%s:%s", getNamespace(), getName()); |
| } |
| |
| /** |
| * The name of this metric. |
| * |
| * @deprecated to be removed once Dataflow no longer requires this method. |
| */ |
| @Deprecated |
| public String name() { |
| return getName(); |
| } |
| |
| public static MetricName named(String namespace, String name) { |
| checkArgument(!Strings.isNullOrEmpty(namespace), "Metric namespace must be non-empty"); |
| checkArgument(!Strings.isNullOrEmpty(name), "Metric name must be non-empty"); |
| return new AutoValue_MetricName(namespace, name); |
| } |
| |
| public static MetricName named(Class<?> namespace, String name) { |
| checkArgument(namespace != null, "Metric namespace must be non-null"); |
| checkArgument(!Strings.isNullOrEmpty(name), "Metric name must be non-empty"); |
| return new AutoValue_MetricName(namespace.getName(), name); |
| } |
| } |