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Posted to reviews@iotdb.apache.org by GitBox <gi...@apache.org> on 2021/05/10 05:34:34 UTC
[GitHub] [iotdb] eedalong commented on a change in pull request #3083: [IOTDB-1261] add client csharp
eedalong commented on a change in pull request #3083:
URL: https://github.com/apache/iotdb/pull/3083#discussion_r629059008
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File path: client-csharp/SessionPool.cs
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@@ -0,0 +1,642 @@
+/**
+ * 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.
+ */
+using Thrift;
+using Thrift.Transport;
+using Thrift.Protocol;
+using System;
+using System.Linq;
+using System.Collections.Generic;
+using System.Threading;
+using Thrift.Transport.Client;
+using iotdb_client_csharp.client.utils;
+using NLog;
+using System.Net.Sockets;
+using System.Threading.Tasks;
+namespace iotdb_client_csharp.client{
+ public class SessionPool{
+ private string username, password, zoneId, host;
+ public int SUCCESS_CODE{
Review comment:
Sounds Good
##########
File path: client-csharp/SessionPool.cs
##########
@@ -0,0 +1,642 @@
+/**
+ * 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.
+ */
+using Thrift;
+using Thrift.Transport;
+using Thrift.Protocol;
+using System;
+using System.Linq;
+using System.Collections.Generic;
+using System.Threading;
+using Thrift.Transport.Client;
+using iotdb_client_csharp.client.utils;
+using NLog;
+using System.Net.Sockets;
+using System.Threading.Tasks;
+namespace iotdb_client_csharp.client{
+ public class SessionPool{
+ private string username, password, zoneId, host;
+ public int SUCCESS_CODE{
+ get{return 200;}
+ }
+ private int port, fetch_size;
+ private int pool_size = 4;
+ private bool debug_mode = false;
+ private bool is_close = true;
+ private ConcurentClientQueue client_lst;
+ private NLog.Logger _logger;
+ public Utils util_functions = new Utils();
+ private static TSProtocolVersion protocol_version = TSProtocolVersion.IOTDB_SERVICE_PROTOCOL_V3;
+
+ public SessionPool(string host, int port, int pool_size){
+ // init success code
+ this.host = host;
+ this.port = port;
+ this.username = "root";
+ this.password = "root";
+ this.zoneId = "UTC+08:00";
+ this.fetch_size = 1024;
+ this.pool_size = pool_size;
+ }
+ public SessionPool(string host, int port, string username, string password, int pool_size=8){
+ this.host = host;
+ this.port = port;
+ this.password = password;
+ this.username = username;
+ this.zoneId = "UTC+08:00";
+ this.fetch_size = 1024;
+ this.debug_mode = false;
+ this.pool_size = pool_size;
+ }
+ public SessionPool(string host, int port, string username, string password, int fetch_size, int pool_size=8){
+ this.host = host;
+ this.port = port;
+ this.username = username;
+ this.password = password;
+ this.fetch_size = fetch_size;
+ this.zoneId = "UTC+08:00";
+ this.debug_mode = false;
+ this.pool_size = pool_size;
+
+ }
+ public SessionPool(string host, int port, string username="root", string password="root", int fetch_size=1000, string zoneId = "UTC+08:00", int pool_size=8){
+ this.host = host;
+ this.port = port;
+ this.username = username;
+ this.password = password;
+ this.zoneId = zoneId;
+ this.fetch_size = fetch_size;
+ this.debug_mode = false;
+ this.pool_size = pool_size;
+ }
+ public void open_debug_mode(NLog.Config.LoggingConfiguration config=null){
+ this.debug_mode = true;
+ if(config == null){
+ config = new NLog.Config.LoggingConfiguration();
+ var logconsole = new NLog.Targets.ConsoleTarget("logconsole");
+ config.AddRule(LogLevel.Debug, LogLevel.Fatal, logconsole);
+ NLog.LogManager.Configuration = config;
+ _logger = NLog.LogManager.GetCurrentClassLogger();
+ }else{
+ NLog.LogManager.Configuration = config;
+ _logger = NLog.LogManager.GetCurrentClassLogger();
+ }
+ }
+ public void close_debug_mode(){
+ this.debug_mode = false;
+ }
+
+ public async Task open(bool enableRPCCompression){
+ client_lst = new ConcurentClientQueue();
+ for(int index = 0; index < pool_size; index++){
+ client_lst.Add(await create_and_open(enableRPCCompression));
+ }
+ }
+ public bool is_open(){
+ return !is_close;
+ }
+ public async Task close(){
+ if(is_close){
+ return;
+ }
+ foreach(var client in client_lst.client_queue.AsEnumerable()){
+ var req = new TSCloseSessionReq(client.sessionId);
+ try{
+ await client.client.closeSessionAsync(req);
+ }
+ catch(TException e){
+ var message = String.Format("Error occurs when closing session at server. Maybe server is down");
+ throw new TException(message, e);
+ }
+ finally{
+ is_close = true;
+ if (client.transport != null){
+ client.transport.Close();
+ }
+ }
+ }
+ }
+ public async Task set_time_zone(string zoneId){
+ this.zoneId = zoneId;
+ foreach(var client in client_lst.client_queue.AsEnumerable()){
+ var req = new TSSetTimeZoneReq(client.sessionId, zoneId);
+ try{
+ var resp = await client.client.setTimeZoneAsync(req);
+ if(debug_mode){
+ _logger.Info("setting time zone_id as {0}, server message:{1}", zoneId, resp.Message);
+ }
+ }
+ catch(TException e ){
+ var message = String.Format("could not set time zone");
+ throw new TException(message, e);
+ }
+ }
+ }
+ public async Task<string> get_time_zone(){
+ TSGetTimeZoneResp resp;
+ if(zoneId != ""){
+ return zoneId;
+ }
+ var client = client_lst.Take();
+ try{
+ resp = await client.client.getTimeZoneAsync(client.sessionId);
+ }
+ catch(TException e){
+ client_lst.Add(client);
+ var message = String.Format("counld not get time zone");
+ throw new TException(message, e);
+ }
+ client_lst.Add(client);
+ return resp.TimeZone;
+ }
+
+ public async Task<Client> create_and_open(bool enableRPCCompression){
+ TcpClient tcp_client = new TcpClient(this.host, this.port);
+ TSIService.Client client;
+ long sessionId, statementId;
+ var transport = new TFramedTransport(new TSocketTransport(tcp_client, null));
+ if(!transport.IsOpen){
+ try{
+ await transport.OpenAsync(new CancellationToken());
+ }
+ catch(TTransportException){
+ throw;
+ }
+ }
+ if(enableRPCCompression){
+ client = new TSIService.Client(new TCompactProtocol(transport));
+ }else{
+ client = new TSIService.Client(new TBinaryProtocol(transport));
+ }
+ var open_req = new TSOpenSessionReq(protocol_version, zoneId);
+ open_req.Username = username;
+ open_req.Password = password;
+ try{
+ var open_resp = await client.openSessionAsync(open_req);
+ if(open_resp.ServerProtocolVersion != protocol_version){
+ var message = String.Format("Protocol Differ, Client version is {0} but Server version is {1}", protocol_version, open_resp.ServerProtocolVersion);
+ throw new TException(message, null);
+ }
+ if (open_resp.ServerProtocolVersion == 0){
+ throw new TException("Protocol not supported", null);
+ }
+ sessionId = open_resp.SessionId;
+ statementId = await client.requestStatementIdAsync(sessionId);
+ }
+ catch(Exception){
+ transport.Close();
+ throw;
+ }
+ is_close = false;
+ var return_client = new Client();
+ return_client.client = client;
+ return_client.sessionId = sessionId;
+ return_client.statementId = statementId;
+ return_client.transport = transport;
+ return return_client;
+ }
+ public async Task<int> set_storage_group_async(string group_name){
+ TSStatus status;
+ var client = client_lst.Take();
+ try{
+ status = await client.client.setStorageGroupAsync(client.sessionId, group_name);
+ }
+ catch(TException e){
+ client_lst.Add(client);
+ var err_msg = String.Format("set storage group {0} failed", group_name);
+ throw new TException(err_msg, e);
+ }
+
+ if(debug_mode){
Review comment:
Cool！
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