code: /*
   * 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.skywalking.oap.server.storage.plugin.banyandb;
  
  import lombok.extern.slf4j.Slf4j;
  import org.apache.skywalking.banyandb.v1.client.BanyanDBClient;
  import org.apache.skywalking.banyandb.v1.client.grpc.exception.BanyanDBException;
  import org.apache.skywalking.banyandb.v1.client.metadata.Measure;
  import org.apache.skywalking.banyandb.v1.client.metadata.Stream;
  import org.apache.skywalking.oap.server.core.CoreModule;
  import org.apache.skywalking.oap.server.core.config.ConfigService;
  import org.apache.skywalking.oap.server.core.storage.StorageException;
  import org.apache.skywalking.oap.server.core.storage.model.Model;
  import org.apache.skywalking.oap.server.core.storage.model.ModelInstaller;
  import org.apache.skywalking.oap.server.library.client.Client;
  import org.apache.skywalking.oap.server.library.module.ModuleManager;
  
  import java.io.IOException;
  
  @Slf4j
  public class BanyanDBIndexInstaller extends ModelInstaller {
      private final BanyanDBStorageConfig config;
  
      public BanyanDBIndexInstaller(Client client, ModuleManager moduleManager, BanyanDBStorageConfig config) {
          super(client, moduleManager);
          this.config = config;
          MetadataRegistry.INSTANCE.initializeIntervals(config.getSpecificGroupSettings());
      }
  
      @Override
      public boolean isExists(Model model) throws StorageException {
          if (!model.isTimeSeries()) {
              return true;
          }
          final ConfigService configService = moduleManager.find(CoreModule.NAME).provider().getService(ConfigService.class);
          final MetadataRegistry.SchemaMetadata metadata = MetadataRegistry.INSTANCE.parseMetadata(model, config, configService);
          try {
              final BanyanDBClient c = ((BanyanDBStorageClient) this.client).client;
              // first check resource existence and create group if necessary
              final boolean resourceExist = metadata.checkResourceExistence(c);
              if (!resourceExist) {
                  return false;
              }
  
              // then check entity schema
              if (metadata.findRemoteSchema(c).isPresent()) {
                  // register models only locally but not remotely
                  if (model.isRecord()) { // stream
                      MetadataRegistry.INSTANCE.registerStreamModel(model, config, configService);
                  } else { // measure
                      MetadataRegistry.INSTANCE.registerMeasureModel(model, config, configService);
                  }
                  return true;
              }
  
              throw new IllegalStateException("inconsistent state:" + metadata);
          } catch (BanyanDBException ex) {
              throw new StorageException("fail to check existence", ex);
          }
      }
  
      @Override
      public void createTable(Model model) throws StorageException {
          try {
              ConfigService configService = moduleManager.find(CoreModule.NAME).provider().getService(ConfigService.class);
              if (model.isRecord()) { // stream
                  Stream stream = MetadataRegistry.INSTANCE.registerStreamModel(model, config, configService);
                  if (stream != null) {
                      log.info("install stream schema {}", model.getName());
                      ((BanyanDBStorageClient) client).define(stream);
                  }
              } else { // measure
                  Measure measure = MetadataRegistry.INSTANCE.registerMeasureModel(model, config, configService);
                  if (measure != null) {
                      log.info("install measure schema {}", measure.name());
                      ((BanyanDBStorageClient) client).define(measure);
                      final BanyanDBClient c = ((BanyanDBStorageClient) this.client).client;
                      MetadataRegistry.INSTANCE.findMetadata(model).installTopNAggregation(c);
                  }
              }
          } catch (IOException ex) {
              throw new StorageException("fail to install schema", ex);
          } catch (BanyanDBException ex) {
              throw new StorageException("fail to install TopN schema", ex);
          }
      }
  }
  