content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * Licensed 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 com.alibaba.nacos.config.server.service.capacity;
  
  import com.alibaba.nacos.common.utils.CollectionUtils;
  import com.alibaba.nacos.config.server.model.capacity.NamespaceCapacity;
  import com.alibaba.nacos.config.server.utils.TimeUtils;
  import com.alibaba.nacos.persistence.datasource.DataSourceService;
  import com.alibaba.nacos.persistence.datasource.DynamicDataSource;
  import com.alibaba.nacos.plugin.datasource.MapperManager;
  import com.alibaba.nacos.plugin.datasource.constants.CommonConstant;
  import com.alibaba.nacos.plugin.datasource.constants.FieldConstant;
  import com.alibaba.nacos.plugin.datasource.constants.TableConstant;
  import com.alibaba.nacos.plugin.datasource.mapper.TenantCapacityMapper;
  import com.alibaba.nacos.plugin.datasource.model.MapperContext;
  import com.alibaba.nacos.plugin.datasource.model.MapperResult;
  import com.alibaba.nacos.sys.env.EnvUtil;
  import org.springframework.jdbc.CannotGetJdbcConnectionException;
  import org.springframework.jdbc.core.JdbcTemplate;
  import org.springframework.jdbc.core.PreparedStatementCreator;
  import org.springframework.jdbc.core.RowMapper;
  import org.springframework.stereotype.Service;
  
  import javax.annotation.PostConstruct;
  import java.sql.PreparedStatement;
  import java.sql.ResultSet;
  import java.sql.SQLException;
  import java.sql.Timestamp;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  import static com.alibaba.nacos.config.server.utils.LogUtil.FATAL_LOG;
  
  /**
   * Tenant Capacity Service.
   *
   * @author hexu.hxy
   * @date 2018/03/05
   */
  @Service
  public class TenantCapacityPersistService {
      
      private static final TenantCapacityRowMapper TENANT_CAPACITY_ROW_MAPPER = new TenantCapacityRowMapper();
      
      private JdbcTemplate jdbcTemplate;
      
      private DataSourceService dataSourceService;
      
      private MapperManager mapperManager;
      
      /**
       * init method.
       */
      @PostConstruct
      public void init() {
          this.dataSourceService = DynamicDataSource.getInstance().getDataSource();
          this.jdbcTemplate = dataSourceService.getJdbcTemplate();
          Boolean isDataSourceLogEnable = EnvUtil.getProperty(CommonConstant.NACOS_PLUGIN_DATASOURCE_LOG, Boolean.class,
                  false);
          this.mapperManager = MapperManager.instance(isDataSourceLogEnable);
      }
      
      static final class TenantCapacityRowMapper implements RowMapper<NamespaceCapacity> {
          
          @Override
          public NamespaceCapacity mapRow(ResultSet rs, int rowNum) throws SQLException {
              NamespaceCapacity tenantCapacity = new NamespaceCapacity();
              tenantCapacity.setId(rs.getLong("id"));
              tenantCapacity.setQuota(rs.getInt("quota"));
              tenantCapacity.setUsage(rs.getInt("usage"));
              tenantCapacity.setMaxSize(rs.getInt("max_size"));
              tenantCapacity.setMaxAggrCount(rs.getInt("max_aggr_count"));
              tenantCapacity.setMaxAggrSize(rs.getInt("max_aggr_size"));
              tenantCapacity.setNamespaceId(rs.getString("tenant_id"));
              return tenantCapacity;
          }
      }
      
      public NamespaceCapacity getTenantCapacity(String tenantId) {
          TenantCapacityMapper tenantCapacityMapper = mapperManager.findMapper(dataSourceService.getDataSourceType(),
                  TableConstant.TENANT_CAPACITY);
          MapperContext context = new MapperContext();
          context.putWhereParameter(FieldConstant.TENANT_ID, tenantId);
          
          MapperResult mapperResult = tenantCapacityMapper.select(context);
          List<NamespaceCapacity> capacityList = jdbcTemplate.query(mapperResult.getSql(), TENANT_CAPACITY_ROW_MAPPER,
                  mapperResult.getParamList().toArray());
          if (capacityList.isEmpty()) {
              return null;
          }
          return capacityList.get(0);
      }
      
      /**
       * Insert TenantCapacity.
       *
       * @param tenantCapacity tenantCapacity object instance.
       * @return operate result.
       */
      public boolean insertTenantCapacity(final NamespaceCapacity tenantCapacity) {
          TenantCapacityMapper tenantCapacityMapper = mapperManager.findMapper(dataSourceService.getDataSourceType(),
                  TableConstant.TENANT_CAPACITY);
          MapperContext context = new MapperContext();
          context.putUpdateParameter(FieldConstant.TENANT_ID, tenantCapacity.getNamespaceId());
          context.putUpdateParameter(FieldConstant.QUOTA, tenantCapacity.getQuota());
          context.putUpdateParameter(FieldConstant.MAX_SIZE, tenantCapacity.getMaxSize());
          context.putUpdateParameter(FieldConstant.MAX_AGGR_SIZE, tenantCapacity.getMaxAggrSize());
          context.putUpdateParameter(FieldConstant.MAX_AGGR_COUNT, tenantCapacity.getMaxAggrCount());
          context.putUpdateParameter(FieldConstant.GMT_CREATE, tenantCapacity.getGmtCreate());
          context.putUpdateParameter(FieldConstant.GMT_MODIFIED, tenantCapacity.getGmtModified());
          context.putWhereParameter(FieldConstant.TENANT_ID, tenantCapacity.getNamespaceId());
          
          final MapperResult mapperResult = tenantCapacityMapper.insertTenantCapacity(context);
          try {
              return jdbcTemplate.update(mapperResult.getSql(), mapperResult.getParamList().toArray()) > 0;
          } catch (CannotGetJdbcConnectionException e) {
              FATAL_LOG.error("[db-error]", e);
              throw e;
          }
          
      }
      
      /**
       * Increment UsageWithDefaultQuotaLimit.
       *
       * @param tenantCapacity tenantCapacity object instance.
       * @return operate result.
       */
      public boolean incrementUsageWithDefaultQuotaLimit(NamespaceCapacity tenantCapacity) {
          TenantCapacityMapper tenantCapacityMapper = mapperManager.findMapper(dataSourceService.getDataSourceType(),
                  TableConstant.TENANT_CAPACITY);
          MapperContext context = new MapperContext();
          context.putUpdateParameter(FieldConstant.GMT_MODIFIED, tenantCapacity.getGmtModified());
          context.putWhereParameter(FieldConstant.TENANT_ID, tenantCapacity.getNamespaceId());
          context.putWhereParameter(FieldConstant.USAGE, tenantCapacity.getQuota());
          MapperResult mapperResult = tenantCapacityMapper.incrementUsageWithDefaultQuotaLimit(context);
          
          try {
              int affectRow = jdbcTemplate.update(mapperResult.getSql(), mapperResult.getParamList().toArray());
              return affectRow == 1;
          } catch (CannotGetJdbcConnectionException e) {
              FATAL_LOG.error("[db-error]", e);
              throw e;
          }
      }
      
      /**
       * Increment UsageWithQuotaLimit.
       *
       * @param tenantCapacity tenantCapacity object instance.
       * @return operate result.
       */
      public boolean incrementUsageWithQuotaLimit(NamespaceCapacity tenantCapacity) {
          TenantCapacityMapper tenantCapacityMapper = mapperManager.findMapper(dataSourceService.getDataSourceType(),
                  TableConstant.TENANT_CAPACITY);
          
          MapperContext context = new MapperContext();
          context.putUpdateParameter(FieldConstant.GMT_MODIFIED, tenantCapacity.getGmtModified());
          context.putWhereParameter(FieldConstant.TENANT_ID, tenantCapacity.getNamespaceId());
          MapperResult mapperResult = tenantCapacityMapper.incrementUsageWithQuotaLimit(context);
          try {
              return jdbcTemplate.update(mapperResult.getSql(), mapperResult.getParamList().toArray()) == 1;
          } catch (CannotGetJdbcConnectionException e) {
              FATAL_LOG.error("[db-error]", e);
              throw e;
              
          }
      }
      
      /**
       * Increment Usage.
       *
       * @param tenantCapacity tenantCapacity object instance.
       * @return operate result.
       */
      public boolean incrementUsage(NamespaceCapacity tenantCapacity) {
          TenantCapacityMapper tenantCapacityMapper = mapperManager.findMapper(dataSourceService.getDataSourceType(),
                  TableConstant.TENANT_CAPACITY);
          
          MapperContext context = new MapperContext();
          context.putUpdateParameter(FieldConstant.GMT_MODIFIED, tenantCapacity.getGmtModified());
          context.putWhereParameter(FieldConstant.TENANT_ID, tenantCapacity.getNamespaceId());
          MapperResult mapperResult = tenantCapacityMapper.incrementUsage(context);
          try {
              int affectRow = jdbcTemplate.update(mapperResult.getSql(), mapperResult.getParamList().toArray());
              return affectRow == 1;
          } catch (CannotGetJdbcConnectionException e) {
              FATAL_LOG.error("[db-error]", e);
              throw e;
          }
      }
      
      /**
       * DecrementUsage.
       *
       * @param tenantCapacity tenantCapacity object instance.
       * @return operate result.
       */
      public boolean decrementUsage(NamespaceCapacity tenantCapacity) {
          TenantCapacityMapper tenantCapacityMapper = mapperManager.findMapper(dataSourceService.getDataSourceType(),
                  TableConstant.TENANT_CAPACITY);
          MapperContext context = new MapperContext();
          context.putUpdateParameter(FieldConstant.GMT_MODIFIED, tenantCapacity.getGmtModified());
          context.putWhereParameter(FieldConstant.TENANT_ID, tenantCapacity.getNamespaceId());
          MapperResult mapperResult = tenantCapacityMapper.decrementUsage(context);
          try {
              return jdbcTemplate.update(mapperResult.getSql(), mapperResult.getParamList().toArray()) == 1;
          } catch (CannotGetJdbcConnectionException e) {
              FATAL_LOG.error("[db-error]", e);
              throw e;
          }
      }
      
      /**
       * Update TenantCapacity.
       *
       * @param tenant       tenant string value.
       * @param quota        quota int value.
       * @param maxSize      maxSize int value.
       * @param maxAggrCount maxAggrCount int value.
       * @param maxAggrSize  maxAggrSize int value.
       * @return operate result.
       */
      public boolean updateTenantCapacity(String tenant, Integer quota, Integer maxSize, Integer maxAggrCount,
              Integer maxAggrSize) {
          List<Object> argList = CollectionUtils.list();
          
          List<String> columns = new ArrayList<>();
          if (quota != null) {
              columns.add("quota");
              argList.add(quota);
          }
          if (maxSize != null) {
              columns.add("max_size");
              argList.add(maxSize);
          }
          if (maxAggrCount != null) {
              columns.add("max_aggr_count");
              argList.add(maxAggrCount);
          }
          if (maxAggrSize != null) {
              columns.add("max_aggr_size");
              argList.add(maxAggrSize);
          }
          columns.add("gmt_modified");
          argList.add(TimeUtils.getCurrentTime());
          
          List<String> where = new ArrayList<>();
          where.add("tenant_id");
          
          argList.add(tenant);
          
          TenantCapacityMapper tenantCapacityMapper = mapperManager.findMapper(dataSourceService.getDataSourceType(),
                  TableConstant.TENANT_CAPACITY);
          String sql = tenantCapacityMapper.update(columns, where);
          try {
              return jdbcTemplate.update(sql, argList.toArray()) == 1;
          } catch (CannotGetJdbcConnectionException e) {
              FATAL_LOG.error("[db-error]", e);
              throw e;
          }
      }
      
      public boolean updateQuota(String tenant, Integer quota) {
          return updateTenantCapacity(tenant, quota, null, null, null);
      }
      
      /**
       * Correct Usage.
       *
       * @param tenant      tenant.
       * @param gmtModified gmtModified.
       * @return operate result.
       */
      public boolean correctUsage(String tenant, Timestamp gmtModified) {
          TenantCapacityMapper tenantCapacityMapper = mapperManager.findMapper(dataSourceService.getDataSourceType(),
                  TableConstant.TENANT_CAPACITY);
          
          MapperContext context = new MapperContext();
          context.putUpdateParameter(FieldConstant.GMT_MODIFIED, gmtModified);
          context.putWhereParameter(FieldConstant.TENANT_ID, tenant);
          MapperResult mapperResult = tenantCapacityMapper.correctUsage(context);
          try {
              return jdbcTemplate.update(mapperResult.getSql(), mapperResult.getParamList().toArray()) == 1;
          } catch (CannotGetJdbcConnectionException e) {
              FATAL_LOG.error("[db-error]", e);
              throw e;
          }
      }
      
      /**
       * Get TenantCapacity List, only including id and tenantId value.
       *
       * @param lastId   lastId long value.
       * @param pageSize pageSize int value.
       * @return TenantCapacity List.
       */
      public List<NamespaceCapacity> getCapacityList4CorrectUsage(long lastId, int pageSize) {
          TenantCapacityMapper tenantCapacityMapper = mapperManager.findMapper(dataSourceService.getDataSourceType(),
                  TableConstant.TENANT_CAPACITY);
          MapperContext context = new MapperContext();
          context.putWhereParameter(FieldConstant.ID, lastId);
          context.putWhereParameter(FieldConstant.LIMIT_SIZE, pageSize);
          MapperResult mapperResult = tenantCapacityMapper.getCapacityList4CorrectUsage(context);
          
          try {
              return jdbcTemplate.query(mapperResult.getSql(), mapperResult.getParamList().toArray(), (rs, rowNum) -> {
                  NamespaceCapacity tenantCapacity = new NamespaceCapacity();
                  tenantCapacity.setId(rs.getLong("id"));
                  tenantCapacity.setNamespaceId(rs.getString("tenant_id"));
                  return tenantCapacity;
              });
          } catch (CannotGetJdbcConnectionException e) {
              FATAL_LOG.error("[db-error]", e);
              throw e;
          }
      }
      
      /**
       * Delete TenantCapacity.
       *
       * @param tenant tenant string value.
       * @return operate result.
       */
      public boolean deleteTenantCapacity(final String tenant) {
          try {
              TenantCapacityMapper tenantCapacityMapper = mapperManager.findMapper(dataSourceService.getDataSourceType(),
                      TableConstant.TENANT_CAPACITY);
              PreparedStatementCreator preparedStatementCreator = connection -> {
                  PreparedStatement ps = connection.prepareStatement(
                          tenantCapacityMapper.delete(Collections.singletonList("tenant_id")));
                  ps.setString(1, tenant);
                  return ps;
              };
              return jdbcTemplate.update(preparedStatementCreator) == 1;
          } catch (CannotGetJdbcConnectionException e) {
              FATAL_LOG.error("[db-error]", e);
              throw e;
          }
      }
  }
  