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.ambari.server.state.stack;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Map.Entry;
  import java.util.Optional;
  
  import org.apache.ambari.server.state.UriInfo;
  
  import com.fasterxml.jackson.annotation.JsonIgnore;
  import com.fasterxml.jackson.annotation.JsonProperty;
  import com.google.gson.annotations.SerializedName;
  
  /**
   * Used to represent metrics for a stack component.
   */
  public class MetricDefinition {
    private static final String OVERRIDDEN_HOST_PROP = "overridden_host";
    private String type = null;
    private Map<String, String> properties = null;
    private Map<String, Map<String, Metric>> metrics = null;
    @SerializedName("jmx_source_uri")
    private UriInfo jmxSourceUri;
  
    public MetricDefinition(String type, Map<String, String> properties, Map<String, Map<String, Metric>> metrics) {
      this.type = type;
      this.properties = properties;
      this.metrics = metrics;
    }
  
    public String getType() {
      return type;
    }
    
    public Map<String, String> getProperties() {
      return properties;
    }
  
    @JsonProperty("metrics")
    public Map<String, Map<String, Metric>> getMetricsByCategory() {
      return metrics;
    }
  
    /**
     * Return flat metric map without category
     */
    @JsonIgnore
    public Map<String, Metric> getMetrics() {
      Map<String, Metric> metricMap = new HashMap<>();
      for (Entry<String, Map<String, Metric>> metricMapEntry : metrics.entrySet()) {
        metricMap.putAll(metricMapEntry.getValue());
      }
      return metricMap;
    }
    
    @Override
    public String toString() {
      StringBuilder sb = new StringBuilder();
      sb.append("{type=").append(type);
      sb.append(";properties=").append(properties);
      sb.append(";metric_count=").append(getMetrics().size());
      sb.append('}');
      
      return sb.toString();
    }
  
    public Optional<String> getOverriddenHosts() {
      return properties == null
        ? Optional.empty()
        : Optional.ofNullable(properties.get(OVERRIDDEN_HOST_PROP));
    }
  
    public Optional<UriInfo> getJmxSourceUri() {
      return !"jmx".equalsIgnoreCase(type) ? Optional.empty() : Optional.ofNullable(jmxSourceUri);
    }
  }
  