ramkrish86 commented on a change in pull request #1681: URL: https://github.com/apache/hbase/pull/1681#discussion_r427474466
########## File path: hbase-client/src/main/java/org/apache/hadoop/hbase/slowlog/SlowLogTableAccessor.java ########## @@ -0,0 +1,149 @@ +/* + * + * 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.hadoop.hbase.slowlog; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.List; +import java.util.Random; +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.hbase.HConstants; +import org.apache.hadoop.hbase.NamespaceDescriptor; +import org.apache.hadoop.hbase.TableName; +import org.apache.hadoop.hbase.client.Connection; +import org.apache.hadoop.hbase.client.ConnectionFactory; +import org.apache.hadoop.hbase.client.Durability; +import org.apache.hadoop.hbase.client.Put; +import org.apache.hadoop.hbase.client.Table; +import org.apache.hadoop.hbase.shaded.protobuf.generated.TooSlowLog; +import org.apache.hadoop.hbase.util.Bytes; +import org.apache.hadoop.hbase.util.EnvironmentEdgeManager; +import org.apache.yetus.audience.InterfaceAudience; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Slowlog Accessor to record slow/large RPC log identified at each RegionServer RpcServer level. + * This can be done only optionally to record the entire history of slow/large rpc calls + * since RingBuffer can handle only limited latest records. + */ +@InterfaceAudience.Private +public class SlowLogTableAccessor { + + private static final Logger LOG = LoggerFactory.getLogger(SlowLogTableAccessor.class); + + private static final Random RANDOM = new Random(); + + private static Connection connection; + + /** + * hbase:slowlog table name - can be enabled + * with config - hbase.regionserver.slowlog.systable.enabled + */ + public static final TableName SLOW_LOG_TABLE_NAME = + TableName.valueOf(NamespaceDescriptor.SYSTEM_NAMESPACE_NAME_STR, "slowlog"); + + private static void doPut(final Connection connection, final List<Put> puts) + throws IOException { + try (Table table = connection.getTable(SLOW_LOG_TABLE_NAME)) { + table.put(puts); + } + } + + /** + * Add slow/large log records to hbase:slowlog table + * @param slowLogPayloads List of SlowLogPayload to process + * @param configuration Configuration to use for connection + */ + public static void addSlowLogRecords(final List<TooSlowLog.SlowLogPayload> slowLogPayloads, + final Configuration configuration) { + List<Put> puts = new ArrayList<>(slowLogPayloads.size()); + for (TooSlowLog.SlowLogPayload slowLogPayload : slowLogPayloads) { + final byte[] rowKey = getRowKey(slowLogPayload); + final Put put = new Put(rowKey).setDurability(Durability.SKIP_WAL) + .addColumn(HConstants.SLOWLOG_INFO_FAMILY, Bytes.toBytes("call_details"), + Bytes.toBytes(slowLogPayload.getCallDetails())) + .addColumn(HConstants.SLOWLOG_INFO_FAMILY, Bytes.toBytes("client_address"), + Bytes.toBytes(slowLogPayload.getClientAddress())) + .addColumn(HConstants.SLOWLOG_INFO_FAMILY, Bytes.toBytes("method_name"), + Bytes.toBytes(slowLogPayload.getMethodName())) + .addColumn(HConstants.SLOWLOG_INFO_FAMILY, Bytes.toBytes("param"), + Bytes.toBytes(slowLogPayload.getParam())) + .addColumn(HConstants.SLOWLOG_INFO_FAMILY, Bytes.toBytes("processing_time"), + Bytes.toBytes(Integer.toString(slowLogPayload.getProcessingTime()))) + .addColumn(HConstants.SLOWLOG_INFO_FAMILY, Bytes.toBytes("queue_time"), + Bytes.toBytes(Integer.toString(slowLogPayload.getQueueTime()))) + .addColumn(HConstants.SLOWLOG_INFO_FAMILY, Bytes.toBytes("region_name"), + Bytes.toBytes(slowLogPayload.getRegionName())) + .addColumn(HConstants.SLOWLOG_INFO_FAMILY, Bytes.toBytes("response_size"), + Bytes.toBytes(Long.toString(slowLogPayload.getResponseSize()))) + .addColumn(HConstants.SLOWLOG_INFO_FAMILY, Bytes.toBytes("server_class"), + Bytes.toBytes(slowLogPayload.getServerClass())) + .addColumn(HConstants.SLOWLOG_INFO_FAMILY, Bytes.toBytes("start_time"), + Bytes.toBytes(Long.toString(slowLogPayload.getStartTime()))) + .addColumn(HConstants.SLOWLOG_INFO_FAMILY, Bytes.toBytes("type"), + Bytes.toBytes(slowLogPayload.getType().name())) + .addColumn(HConstants.SLOWLOG_INFO_FAMILY, Bytes.toBytes("username"), + Bytes.toBytes(slowLogPayload.getUserName())); + puts.add(put); + } + try { + if (connection == null) { + createConnection(configuration); + } + doPut(connection, puts); + } catch (Exception e) { + LOG.warn("Failed to add slow/large log records to hbase:slowlog table.", e); + } + } + + private static synchronized void createConnection(Configuration configuration) Review comment: It is synchronized. Good. Anyway mostly it will be only one thread executing it I believe. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
