| /* |
| * 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.solr.metrics; |
| |
| import com.codahale.metrics.MetricRegistry; |
| import org.apache.solr.core.SolrInfoBean; |
| |
| /** |
| * Wraps meta-data for a metric. |
| */ |
| public final class SolrMetricInfo { |
| public final String name; |
| public final String scope; |
| public final SolrInfoBean.Category category; |
| |
| /** |
| * Creates a new instance of {@link SolrMetricInfo}. |
| * |
| * @param category the category of the metric (e.g. `QUERY`) |
| * @param scope the scope of the metric (e.g. `/admin/ping`) |
| * @param name the name of the metric (e.g. `Requests`) |
| */ |
| public SolrMetricInfo(SolrInfoBean.Category category, String scope, String name) { |
| this.name = name; |
| this.scope = scope; |
| this.category = category; |
| } |
| |
| public static SolrMetricInfo of(String fullName) { |
| if (fullName == null || fullName.isEmpty()) { |
| return null; |
| } |
| String[] names = fullName.split("\\."); |
| if (names.length < 2) { // not a valid info |
| return null; |
| } |
| // check top-level name for valid category |
| SolrInfoBean.Category category; |
| try { |
| category = SolrInfoBean.Category.valueOf(names[0]); |
| } catch (IllegalArgumentException e) { // not a valid category |
| return null; |
| } |
| String scope; |
| String name; |
| if (names.length == 2) { |
| scope = null; |
| name = fullName.substring(names[0].length() + 1); |
| } else { |
| scope = names[1]; |
| name = fullName.substring(names[0].length() + names[1].length() + 2); |
| } |
| return new SolrMetricInfo(category, scope, name); |
| } |
| |
| /** |
| * Returns the metric name defined by this object. |
| * For example, if the name is `Requests`, scope is `/admin/ping`, |
| * and category is `QUERY`, then the metric name is |
| * `QUERY./admin/ping.Requests`. |
| * |
| * @return the metric name defined by this object |
| */ |
| public String getMetricName() { |
| return MetricRegistry.name(category.toString(), scope, name); |
| } |
| |
| @Override |
| public String toString() { |
| return "SolrMetricInfo{" + |
| "name='" + name + '\'' + |
| ", scope='" + scope + '\'' + |
| ", category=" + category + |
| '}'; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| |
| SolrMetricInfo that = (SolrMetricInfo) o; |
| |
| if (name != null ? !name.equals(that.name) : that.name != null) return false; |
| if (scope != null ? !scope.equals(that.scope) : that.scope != null) return false; |
| return category == that.category; |
| |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = name != null ? name.hashCode() : 0; |
| result = 31 * result + (scope != null ? scope.hashCode() : 0); |
| result = 31 * result + (category != null ? category.hashCode() : 0); |
| return result; |
| } |
| } |