content: /*
   * 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 org.apache.cassandra.sidecar.metrics.server;
  
  import com.codahale.metrics.MetricRegistry;
  import org.apache.cassandra.sidecar.db.schema.SidecarSchema;
  import org.apache.cassandra.sidecar.metrics.DeltaGauge;
  import org.apache.cassandra.sidecar.metrics.NamedMetric;
  
  import static org.apache.cassandra.sidecar.metrics.server.ServerMetrics.SERVER_PREFIX;
  
  /**
   * Tracks metrics for {@link SidecarSchema} and other schema related handling
   * done by Sidecar
   */
  public class SchemaMetrics
  {
      public static final String DOMAIN = SERVER_PREFIX + ".Schema";
      protected final MetricRegistry metricRegistry;
      public final NamedMetric<DeltaGauge> failedInitializations;
      public final NamedMetric<DeltaGauge> failedModifications;
  
      public SchemaMetrics(MetricRegistry metricRegistry)
      {
          this.metricRegistry = metricRegistry;
  
          failedInitializations
          = NamedMetric.builder(name -> metricRegistry.gauge(name, DeltaGauge::new))
                       .withDomain(DOMAIN)
                       .withName("FailedInitializations")
                       .build();
          failedModifications
          = NamedMetric.builder(name -> metricRegistry.gauge(name, DeltaGauge::new))
                       .withDomain(DOMAIN)
                       .withName("FailedModifications")
                       .build();
      }
  }
  