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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.atlas.web.rest;
  
  import org.apache.atlas.annotation.Timed;
  import org.apache.atlas.exception.AtlasBaseException;
  import org.apache.atlas.model.instance.AtlasRelationship;
  import org.apache.atlas.model.instance.AtlasRelationship.AtlasRelationshipWithExtInfo;
  import org.apache.atlas.repository.store.graph.AtlasRelationshipStore;
  import org.apache.atlas.utils.AtlasPerfTracer;
  import org.apache.atlas.web.util.Servlets;
  import org.slf4j.Logger;
  import org.springframework.stereotype.Service;
  
  import javax.inject.Inject;
  import javax.inject.Singleton;
  import javax.ws.rs.Consumes;
  import javax.ws.rs.DELETE;
  import javax.ws.rs.DefaultValue;
  import javax.ws.rs.GET;
  import javax.ws.rs.POST;
  import javax.ws.rs.PUT;
  import javax.ws.rs.Path;
  import javax.ws.rs.PathParam;
  import javax.ws.rs.Produces;
  import javax.ws.rs.QueryParam;
  import javax.ws.rs.core.MediaType;
  
  /**
   * REST interface for entity relationships.
   */
  @Path("v2/relationship")
  @Singleton
  @Service
  @Consumes({Servlets.JSON_MEDIA_TYPE, MediaType.APPLICATION_JSON})
  @Produces({Servlets.JSON_MEDIA_TYPE, MediaType.APPLICATION_JSON})
  public class RelationshipREST {
      private static final Logger PERF_LOG = AtlasPerfTracer.getPerfLogger("rest.RelationshipREST");
  
      private final AtlasRelationshipStore relationshipStore;
  
      @Inject
      public RelationshipREST(AtlasRelationshipStore relationshipStore) {
          this.relationshipStore = relationshipStore;
      }
  
      /**
       * Create a new relationship between entities.
       */
      @POST
      @Timed
      public AtlasRelationship create(AtlasRelationship relationship) throws AtlasBaseException {
          AtlasPerfTracer perf = null;
  
          try {
              if (AtlasPerfTracer.isPerfTraceEnabled(PERF_LOG)) {
                  perf = AtlasPerfTracer.getPerfTracer(PERF_LOG, "RelationshipREST.create(" + relationship + ")");
              }
  
              return relationshipStore.create(relationship);
          } finally {
              AtlasPerfTracer.log(perf);
          }
      }
  
      /**
       * Update an existing relationship between entities.
       */
      @PUT
      @Timed
      public AtlasRelationship update(AtlasRelationship relationship) throws AtlasBaseException {
          AtlasPerfTracer perf = null;
  
          try {
              if (AtlasPerfTracer.isPerfTraceEnabled(PERF_LOG)) {
                  perf = AtlasPerfTracer.getPerfTracer(PERF_LOG, "RelationshipREST.update(" + relationship + ")");
              }
  
              return relationshipStore.update(relationship);
          } finally {
              AtlasPerfTracer.log(perf);
          }
      }
  
      /**
       * Get relationship information between entities using guid.
       */
      @GET
      @Path("/guid/{guid}")
      @Timed
      public AtlasRelationshipWithExtInfo getById(@PathParam("guid") String guid, @QueryParam("extendedInfo") @DefaultValue("false") boolean extendedInfo) throws AtlasBaseException {
          Servlets.validateQueryParamLength("guid", guid);
  
          AtlasPerfTracer perf = null;
  
          AtlasRelationshipWithExtInfo ret;
  
          try {
              if (AtlasPerfTracer.isPerfTraceEnabled(PERF_LOG)) {
                  perf = AtlasPerfTracer.getPerfTracer(PERF_LOG, "RelationshipREST.getById(" + guid + ")");
              }
  
              if (extendedInfo) {
                  ret = relationshipStore.getExtInfoById(guid);
              } else {
                  ret = new AtlasRelationshipWithExtInfo(relationshipStore.getById(guid));
              }
  
              return ret;
          } finally {
              AtlasPerfTracer.log(perf);
          }
      }
  
      /**
       * Delete a relationship between entities using guid.
       */
      @DELETE
      @Path("/guid/{guid}")
      @Timed
      public void deleteById(@PathParam("guid") String guid) throws AtlasBaseException {
          Servlets.validateQueryParamLength("guid", guid);
  
          AtlasPerfTracer perf = null;
  
          try {
              if (AtlasPerfTracer.isPerfTraceEnabled(PERF_LOG)) {
                  perf = AtlasPerfTracer.getPerfTracer(PERF_LOG, "RelationshipREST.deleteById(" + guid + ")");
              }
  
              relationshipStore.deleteById(guid);
          } finally {
              AtlasPerfTracer.log(perf);
          }
      }
  }
  