com.datastax.oss.driver.internal.core.metrics.DefaultMetricIdGenerator 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 com.datastax.oss.driver.internal.core.metrics;
import com.datastax.oss.driver.api.core.config.DefaultDriverOption;
import com.datastax.oss.driver.api.core.context.DriverContext;
import com.datastax.oss.driver.api.core.metadata.Node;
import com.datastax.oss.driver.api.core.metrics.NodeMetric;
import com.datastax.oss.driver.api.core.metrics.SessionMetric;
import com.datastax.oss.driver.shaded.guava.common.collect.ImmutableMap;
import edu.umd.cs.findbugs.annotations.NonNull;
import java.util.Objects;
/**
* The default {@link MetricIdGenerator}.
*
* This generator generates unique names, containing the session name, the node endpoint (for
* node metrics), and the metric prefix. It does not generate tags.
*/
public class DefaultMetricIdGenerator implements MetricIdGenerator {
private final String sessionPrefix;
private final String nodePrefix;
@SuppressWarnings("unused")
public DefaultMetricIdGenerator(DriverContext context) {
String sessionName = context.getSessionName();
String prefix =
Objects.requireNonNull(
context
.getConfig()
.getDefaultProfile()
.getString(DefaultDriverOption.METRICS_ID_GENERATOR_PREFIX, ""));
sessionPrefix = prefix.isEmpty() ? sessionName + '.' : prefix + '.' + sessionName + '.';
nodePrefix = sessionPrefix + "nodes.";
}
@NonNull
@Override
public MetricId sessionMetricId(@NonNull SessionMetric metric) {
return new DefaultMetricId(sessionPrefix + metric.getPath(), ImmutableMap.of());
}
@NonNull
@Override
public MetricId nodeMetricId(@NonNull Node node, @NonNull NodeMetric metric) {
return new DefaultMetricId(
nodePrefix + node.getEndPoint().asMetricPrefix() + '.' + metric.getPath(),
ImmutableMap.of());
}
}