com.datastax.oss.driver.internal.core.metrics.NoopMetricsFactory 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.config.DriverExecutionProfile;
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.Metrics;
import java.util.List;
import java.util.Optional;
import net.jcip.annotations.ThreadSafe;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ThreadSafe
public class NoopMetricsFactory implements MetricsFactory {
private static final Logger LOG = LoggerFactory.getLogger(NoopMetricsFactory.class);
@SuppressWarnings("unused")
public NoopMetricsFactory(DriverContext context) {
String logPrefix = context.getSessionName();
DriverExecutionProfile config = context.getConfig().getDefaultProfile();
List enabledSessionMetrics =
config.getStringList(DefaultDriverOption.METRICS_SESSION_ENABLED);
List enabledNodeMetrics =
config.getStringList(DefaultDriverOption.METRICS_NODE_ENABLED);
if (!enabledSessionMetrics.isEmpty() || !enabledNodeMetrics.isEmpty()) {
LOG.warn(
"[{}] Some session-level or node-level metrics were enabled, "
+ "but NoopMetricsFactory is being used: all metrics will be empty",
logPrefix);
}
}
@Override
public Optional getMetrics() {
return Optional.empty();
}
@Override
public SessionMetricUpdater getSessionUpdater() {
return NoopSessionMetricUpdater.INSTANCE;
}
@Override
public NodeMetricUpdater newNodeUpdater(Node node) {
return NoopNodeMetricUpdater.INSTANCE;
}
}