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.AtlasErrorCode;
  import org.apache.atlas.AtlasException;
  import org.apache.atlas.annotation.Timed;
  import org.apache.atlas.authorize.AtlasAdminAccessRequest;
  import org.apache.atlas.authorize.AtlasAuthorizationUtils;
  import org.apache.atlas.authorize.AtlasPrivilege;
  import org.apache.atlas.exception.AtlasBaseException;
  import org.apache.atlas.repository.graph.IndexRecoveryService;
  import org.apache.atlas.repository.graphdb.AtlasGraph;
  import org.apache.atlas.repository.graphdb.AtlasVertex;
  import org.apache.atlas.utils.AtlasPerfTracer;
  import org.apache.atlas.web.util.DateTimeHelper;
  import org.apache.atlas.web.util.Servlets;
  import org.apache.commons.lang.StringUtils;
  import org.slf4j.Logger;
  import org.springframework.format.annotation.DateTimeFormat;
  import org.springframework.stereotype.Service;
  
  import javax.inject.Inject;
  import javax.inject.Singleton;
  import javax.ws.rs.Consumes;
  import javax.ws.rs.GET;
  import javax.ws.rs.POST;
  import javax.ws.rs.Path;
  import javax.ws.rs.Produces;
  import javax.ws.rs.QueryParam;
  import javax.ws.rs.core.MediaType;
  
  import java.time.Instant;
  import java.util.HashMap;
  import java.util.Map;
  
  import static org.apache.atlas.repository.Constants.INDEX_RECOVERY_PREFIX;
  import static org.apache.atlas.repository.Constants.PROPERTY_KEY_INDEX_RECOVERY_CUSTOM_TIME;
  import static org.apache.atlas.repository.Constants.PROPERTY_KEY_INDEX_RECOVERY_PREV_TIME;
  import static org.apache.atlas.repository.Constants.PROPERTY_KEY_INDEX_RECOVERY_START_TIME;
  
  @Path("v2/indexrecovery")
  @Singleton
  @Service
  @Consumes({Servlets.JSON_MEDIA_TYPE, MediaType.APPLICATION_JSON})
  @Produces({Servlets.JSON_MEDIA_TYPE, MediaType.APPLICATION_JSON})
  public class IndexRecoveryREST {
      private static final Logger PERF_LOG = AtlasPerfTracer.getPerfLogger("rest.IndexRecoveryREST");
  
      private final IndexRecoveryService indexRecoveryService;
      private final AtlasGraph           graph;
  
      @Inject
      IndexRecoveryREST(IndexRecoveryService indexRecoveryService, AtlasGraph graph) {
          this.indexRecoveryService = indexRecoveryService;
          this.graph                = graph;
      }
  
      public static String getPropertyKeyByRemovingPrefix(String propertyKey) {
          return StringUtils.removeStart(propertyKey, INDEX_RECOVERY_PREFIX);
      }
  
      /**
       * @return Future index recovery start time and previous recovery start time if applicable
       * @HTTP 200 If Index recovery data exists for the given entity
       * @HTTP 400 Bad query parameters
       */
      @GET
      @Timed
      public Map<String, String> getIndexRecoveryData() {
          AtlasPerfTracer     perf              = null;
          Long                startTime         = null;
          Long                prevTime          = null;
          Long                customStartTime   = null;
          Map<String, String> indexRecoveryData = new HashMap<>();
  
          try {
              if (AtlasPerfTracer.isPerfTraceEnabled(PERF_LOG)) {
                  perf = AtlasPerfTracer.getPerfTracer(PERF_LOG, "IndexRecoveryREST.getIndexRecoveryData()");
              }
  
              AtlasVertex indexRecoveryVertex = indexRecoveryService.recoveryInfoManagement.findVertex();
  
              if (indexRecoveryVertex != null) {
                  startTime       = indexRecoveryVertex.getProperty(PROPERTY_KEY_INDEX_RECOVERY_START_TIME, Long.class);
                  prevTime        = indexRecoveryVertex.getProperty(PROPERTY_KEY_INDEX_RECOVERY_PREV_TIME, Long.class);
                  customStartTime = indexRecoveryVertex.getProperty(PROPERTY_KEY_INDEX_RECOVERY_CUSTOM_TIME, Long.class);
              }
  
              indexRecoveryData.put(getPropertyKeyByRemovingPrefix(PROPERTY_KEY_INDEX_RECOVERY_START_TIME), startTime != null ? Instant.ofEpochMilli(startTime).toString() : "Not applicable");
              indexRecoveryData.put(getPropertyKeyByRemovingPrefix(PROPERTY_KEY_INDEX_RECOVERY_PREV_TIME), prevTime != null ? Instant.ofEpochMilli(prevTime).toString() : "Not applicable");
              indexRecoveryData.put(getPropertyKeyByRemovingPrefix(PROPERTY_KEY_INDEX_RECOVERY_CUSTOM_TIME), customStartTime != null ? Instant.ofEpochMilli(customStartTime).toString() : "Not applicable");
          } finally {
              AtlasPerfTracer.log(perf);
          }
  
          return indexRecoveryData;
      }
  
      @POST
      @Path("/start")
      public void startCustomIndexRecovery(@QueryParam("startTime") @DateTimeFormat(pattern = DateTimeHelper.ISO8601_FORMAT) final String startTime) throws AtlasBaseException, AtlasException {
          AtlasPerfTracer perf = null;
  
          try {
              if (AtlasPerfTracer.isPerfTraceEnabled(PERF_LOG)) {
                  perf = AtlasPerfTracer.getPerfTracer(PERF_LOG, "IndexRecoveryREST.getIndexRecoveryData()");
              }
  
              AtlasAuthorizationUtils.verifyAccess(new AtlasAdminAccessRequest(AtlasPrivilege.ADMIN_IMPORT), "to start dynamic index recovery by custom time");
  
              if (startTime == null) {
                  throw new AtlasBaseException(AtlasErrorCode.BAD_REQUEST, "Index Recovery requested without start time");
              }
  
              if (!indexRecoveryService.recoveryThread.isIndexBackendHealthy()) {
                  throw new AtlasBaseException(AtlasErrorCode.INTERNAL_ERROR, "Index recovery can not be started - Solr Health: Unhealthy");
              }
  
              long startTimeMilli = Instant.parse(startTime).toEpochMilli();
  
              indexRecoveryService.recoveryThread.stopMonitoringByUserRequest();
  
              indexRecoveryService.recoveryThread.startMonitoringByUserRequest(startTimeMilli);
  
              indexRecoveryService.recoveryInfoManagement.updateCustomStartTime(startTimeMilli);
          } finally {
              AtlasPerfTracer.log(perf);
          }
      }
  }
  