com.netflix.spectator.api.NoopId Maven / Gradle / Ivy
/*
* Copyright 2014-2019 Netflix, 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 com.netflix.spectator.api;
import java.util.Collections;
import java.util.Map;
/** Id implementation for the no-op registry. */
final class NoopId implements Id {
/** Singleton instance. */
static final Id INSTANCE = new NoopId();
private NoopId() {
}
@Override public String name() {
return "noop";
}
@Override public Iterable tags() {
return Collections.emptyList();
}
@Override public Id withTag(String k, String v) {
return this;
}
@Override public Id withTag(Tag tag) {
return this;
}
@Override public Id withTags(Iterable tags) {
return this;
}
@Override public Id withTags(Map tags) {
return this;
}
@Override public String toString() {
return name();
}
@Override public String getKey(int i) {
return "name";
}
@Override public String getValue(int i) {
return name();
}
@Override public int size() {
return 1;
}
}