io.datarouter.instrumentation.metric.token.MetricToken Maven / Gradle / Ivy
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/*
* Copyright © 2009 HotPads ([email protected])
*
* 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 io.datarouter.instrumentation.metric.token;
import java.util.Optional;
import io.datarouter.instrumentation.metric.collector.MetricTemplateDto.Nested.MetricTemplateNodeDto;
public interface MetricToken{
String DELIMITER = " ";
String token();
Optional variable();
MetricTemplateNodeDto toDto();
default MetricTokenBuilder start(){
return new MetricTokenBuilder(this);
}
public record MetricLiteral(
String token) implements MetricToken{
@Override
public Optional variable(){
return Optional.empty();
}
@Override
public MetricTemplateNodeDto toDto(){
return new MetricTemplateNodeDto(false, token, null);
}
}
public record MetricTokenVariable(
String name,
String description){
public MetricToken as(String value){
return new MetricNameVariableNode(this, value);
}
private MetricTemplateNodeDto toDto(){
return new MetricTemplateNodeDto(true, name, description);
}
protected static class MetricNameVariableNode implements MetricToken{
private final MetricTokenVariable variable;
private final String token;
public MetricNameVariableNode(MetricTokenVariable variable, String token){
this.variable = variable;
this.token = token;
}
@Override
public String token(){
return token;
}
@Override
public Optional variable(){
return Optional.of(variable);
}
@Override
public MetricTemplateNodeDto toDto(){
return variable.toDto();
}
}
}
}