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A Java-based performance testing tool for RabbitMQ.
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// Copyright (c) 2018-2023 Broadcom. All Rights Reserved.
// The term "Broadcom" refers to Broadcom Inc. and/or its subsidiaries.
//
// This software, the RabbitMQ Java client library, is triple-licensed under the
// Mozilla Public License 2.0 ("MPL"), the GNU General Public License version 2
// ("GPL") and the Apache License version 2 ("ASL"). For the MPL, please see
// LICENSE-MPL-RabbitMQ. For the GPL, please see LICENSE-GPL2.  For the ASL,
// please see LICENSE-APACHE2.
//
// This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND,
// either express or implied. See the LICENSE file for specific language governing
// rights and limitations of this software.
//
// If you have any questions regarding licensing, please contact us at
// [email protected].
package com.rabbitmq.perf;

import static com.rabbitmq.perf.PerfTest.hasOption;
import static com.rabbitmq.perf.Utils.strArg;
import static java.lang.Boolean.valueOf;

import io.micrometer.core.instrument.Clock;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.core.instrument.composite.CompositeMeterRegistry;
import io.micrometer.core.ipc.http.HttpUrlConnectionSender;
import io.micrometer.datadog.DatadogConfig;
import io.micrometer.datadog.DatadogMeterRegistry;
import java.time.Duration;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;

/** */
public class DatadogMetrics implements Metrics {

  private volatile MeterRegistry registry;

  public Options options() {
    Options options = new Options();
    options.addOption(new Option("mda", "metrics-datadog", false, "enable Datadog metrics"));
    options.addOption(new Option("mdk", "metrics-datadog-api-key", true, "Datadog API key"));
    options.addOption(
        new Option(
            "mds",
            "metrics-datadog-step-size",
            true,
            "step size (reporting frequency) to use " + "in seconds, default is 10 seconds"));
    options.addOption(
        new Option("mdak", "metrics-datadog-application-key", true, "Datadog application key"));
    options.addOption(
        new Option(
            "mdh",
            "metrics-datadog-host-tag",
            true,
            "tag that will be mapped to \"host\" when shipping metrics to datadog"));
    options.addOption(
        new Option(
            "mdd",
            "metrics-datadog-descriptions",
            false,
            "if meter descriptions should be sent to Datadog"));
    options.addOption(
        new Option(
            "mdu",
            "metrics-datadog-uri",
            true,
            "URI to ship metrics, useful when using "
                + "a proxy, default is https://app.datadoghq.com"));
    return options;
  }

  public void configure(ConfigurationContext context) throws Exception {
    CommandLineProxy cmd = context.cmd();
    CompositeMeterRegistry meterRegistry = context.meterRegistry();
    if (isEnabled(cmd)) {
      Map dataCfg = new HashMap<>();
      dataCfg.put("datadog.apiKey", strArg(cmd, "mdk", null));
      dataCfg.put("datadog.step", strArg(cmd, "mds", "10"));
      dataCfg.put("datadog.applicationKey", strArg(cmd, "mdak", null));
      dataCfg.put("datadog.hostTag", strArg(cmd, "mdh", null));
      dataCfg.put("datadog.descriptions", valueOf(hasOption(cmd, "mdd")).toString());
      dataCfg.put("datadog.uri", strArg(cmd, "mdu", null));

      DatadogConfig config =
          new DatadogConfig() {

            @Override
            public Duration step() {
              return Duration.ofSeconds(Integer.valueOf(dataCfg.get("datadog.step")));
            }

            @Override
            public String get(String k) {
              return dataCfg.get(k);
            }
          };
      registry =
          DatadogMeterRegistry.builder(config)
              .clock(Clock.SYSTEM)
              .threadFactory(new NamedThreadFactory("perf-test-metrics-datadog-"))
              .httpClient(new HttpUrlConnectionSender())
              .build();
      meterRegistry.add(registry);
    }
  }

  public void close() {
    if (registry != null) {
      registry.close();
    }
  }

  @Override
  public String toString() {
    return "Datadog Metrics";
  }
}