[TD-14555]<impr>: remove plugins/mqtt (#11278)

src/plugins/mqtt/CMakeLists.txt

-CMAKE_MINIMUM_REQUIRED(VERSION 3.0...3.20)
-PROJECT(TDengine)
-
-INCLUDE_DIRECTORIES(inc)
-INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
-INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)
-INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/MQTT-C/include)
-INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/MQTT-C/examples/templates)
-AUX_SOURCE_DIRECTORY(src SRC)
-
-IF (TD_LINUX)
-  ADD_LIBRARY(mqtt ${SRC})
-  TARGET_LINK_LIBRARIES(mqtt cJson mqttc)
-
-  IF (TD_SOMODE_STATIC)
-    TARGET_LINK_LIBRARIES(mqtt taos_static)
-  ELSE ()
-    TARGET_LINK_LIBRARIES(mqtt taos)
-  ENDIF ()
-ENDIF ()
-
-IF (TD_DARWIN)
-  ADD_LIBRARY(mqtt ${SRC})
-  TARGET_LINK_LIBRARIES(mqtt cJson mqttc)
-
-  IF (TD_SOMODE_STATIC)
-    TARGET_LINK_LIBRARIES(mqtt taos_static)
-  ELSE ()
-    TARGET_LINK_LIBRARIES(mqtt taos)
-  ENDIF ()
-ENDIF ()
-

src/plugins/mqtt/inc/mqttInit.h

-/*
- * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
- *
- * This program is free software: you can use, redistribute, and/or modify
- * it under the terms of the GNU Affero General Public License, version 3
- * or later ("AGPL"), as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef TDENGINE_MQTT_INIT_H
-#define TDENGINE_MQTT_INIT_H
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * @file
- * A simple subscriber program that performs automatic reconnections.
- */
-#include "mqtt.h"
-
-#define QOS                1
-#define TIMEOUT            10000L
-#define MQTT_SEND_BUF_SIZE 102400
-#define MQTT_RECV_BUF_SIZE 102400
-
-/**
- * @brief A structure that I will use to keep track of some data needed
- *        to setup the connection to the broker.
- *
- * An instance of this struct will be created in my \c main(). Then, whenever
- * \ref mqttReconnectClient is called, this instance will be passed.
- */
-typedef struct SMqttReconnectState {
-  uint8_t* sendbuf;
-  size_t   sendbufsz;
-  uint8_t* recvbuf;
-  size_t   recvbufsz;
-} SMqttReconnectState;
-
-/**
- * @brief My reconnect callback. It will reestablish the connection whenever
- *        an error occurs.
- */
-void mqttReconnectClient(struct mqtt_client* client, void** reconnect_state_vptr);
-
-/**
- * @brief The function will be called whenever a PUBLISH message is received.
- */
-void mqttPublishCallback(void** unused, struct mqtt_response_publish* published);
-
-/**
- * @brief The client's refresher. This function triggers back-end routines to
- *        handle ingress/egress traffic to the broker.
- *
- * @note All this function needs to do is call \ref __mqtt_recv and
- *       \ref __mqtt_send every so often. I've picked 100 ms meaning that
- *       client ingress/egress traffic will be handled every 100 ms.
- */
-void* mqttClientRefresher(void* client);
-
-/**
- * @brief Safelty closes the \p sockfd and cancels the \p client_daemon before \c exit.
- */
-void mqttCleanupRes(int status, int sockfd, pthread_t* client_daemon);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif

src/plugins/mqtt/inc/mqttLog.h

-/*
- * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
- *
- * This program is free software: you can use, redistribute, and/or modify
- * it under the terms of the GNU Affero General Public License, version 3
- * or later ("AGPL"), as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <mqtt://www.gnu.org/licenses/>.
- */
-
-#ifndef TDENGINE_MQTT_LOG_H
-#define TDENGINE_MQTT_LOG_H
-
-#include "tlog.h"
-
-extern int32_t mqttDebugFlag;
-
-#define mqttFatal(...) { if (mqttDebugFlag & DEBUG_FATAL) { taosPrintLog("MQT FATAL ", 255, __VA_ARGS__); }}
-#define mqttError(...) { if (mqttDebugFlag & DEBUG_ERROR) { taosPrintLog("MQT ERROR ", 255, __VA_ARGS__); }}
-#define mqttWarn(...)  { if (mqttDebugFlag & DEBUG_WARN)  { taosPrintLog("MQT WARN ", 255, __VA_ARGS__); }}
-#define mqttInfo(...)  { if (mqttDebugFlag & DEBUG_INFO)  { taosPrintLog("MQT ", 255, __VA_ARGS__); }}
-#define mqttDebug(...) { if (mqttDebugFlag & DEBUG_DEBUG) { taosPrintLog("MQT ", mqttDebugFlag, __VA_ARGS__); }}
-#define mqttTrace(...) { if (mqttDebugFlag & DEBUG_TRACE) { taosPrintLog("MQT ", mqttDebugFlag, __VA_ARGS__); }}
-
-#endif

src/plugins/mqtt/inc/mqttPayload.h

-/*
- * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
- *
- * This program is free software: you can use, redistribute, and/or modify
- * it under the terms of the GNU Affero General Public License, version 3
- * or later ("AGPL"), as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef TDENGINE_MQTT_PLYLOAD_H
-#define TDENGINE_MQTT_PLYLOAD_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-char* mqttConverJsonToSql(char* json, int maxSize);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif

src/plugins/mqtt/src/mqttPayload.c

-/*
- * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
- *
- * This program is free software: you can use, redistribute, and/or modify
- * it under the terms of the GNU Affero General Public License, version 3
- * or later ("AGPL"), as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#define _DEFAULT_SOURCE
-#include "os.h"
-#include "cJSON.h"
-#include "mqttLog.h"
-#include "mqttPayload.h"
-
-// subscribe message like this
-
-/*
-/test {
-    "timestamp": 1599121290,
-    "gateway": {
-        "name": "AcuLink 810 Gateway",
-        "model": "AcuLink810-868",
-        "serial": "S8P20200207"
-    },
-    "device": {
-        "name": "Acuvim L V3 .221",
-        "model": "Acuvim-L-V3",
-        "serial": "221",
-        "online": true,
-        "readings": [
-            {
-                "param": "Freq_Hz",
-                "value": "59.977539",
-                "unit": "Hz"
-            },
-            {
-                "param": "Va_V",
-                "value": "122.002907",
-                "unit": "V"
-            },
-            {
-                "param": "DI4",
-                "value": "5.000000",
-                "unit": ""
-            }
-        ]
-    }
-}
-*/
-
-// send msg cmd
-// mosquitto_pub -h test.mosquitto.org  -t "/test" -m '{"timestamp": 1599121290,"gateway": {"name": "AcuLink 810 Gateway","model": "AcuLink810-868","serial": "S8P20200207"},"device": {"name": "Acuvim L V3 .221","model": "Acuvim-L-V3","serial": "221","online": true,"readings": [{"param": "Freq_Hz","value": "59.977539","unit": "Hz"},{"param": "Va_V","value": "122.002907","unit": "V"},{"param": "DI4","value": "5.000000","unit": ""}]}}'
-
-/*
- * This is an example, this function needs to be implemented in order to parse the json file into a sql statement
- * Note that you need to create a super table and database before writing data
- * In this case:
- *   create database mqttdb;
- *   create table mqttdb.devices(ts timestamp, value bigint) tags(name binary(32), model binary(32), serial binary(16), param binary(16), unit binary(16));
- */
-
-char* mqttConverJsonToSql(char* json, int maxSize) {
-  // const int32_t maxSize = 10240;
-  maxSize *= 5;
-  char* sql = malloc(maxSize);
-
-  cJSON* root = cJSON_Parse(json);
-  if (root == NULL) {
-    mqttError("failed to parse msg, invalid json format");
-    goto MQTT_PARSE_OVER;
-  }
-
-  cJSON* timestamp = cJSON_GetObjectItem(root, "timestamp");
-  if (!timestamp || timestamp->type != cJSON_Number) {
-    mqttError("failed to parse msg, timestamp not found");
-    goto MQTT_PARSE_OVER;
-  }
-
-  cJSON* device = cJSON_GetObjectItem(root, "device");
-  if (!device) {
-    mqttError("failed to parse msg, device not found");
-    goto MQTT_PARSE_OVER;
-  }
-
-  cJSON* name = cJSON_GetObjectItem(device, "name");
-  if (!name || name->type != cJSON_String) {
-    mqttError("failed to parse msg, name not found");
-    goto MQTT_PARSE_OVER;
-  }
-
-  cJSON* model = cJSON_GetObjectItem(device, "model");
-  if (!model || model->type != cJSON_String) {
-    mqttError("failed to parse msg, model not found");
-    goto MQTT_PARSE_OVER;
-  }
-
-  cJSON* serial = cJSON_GetObjectItem(device, "serial");
-  if (!serial || serial->type != cJSON_String) {
-    mqttError("failed to parse msg, serial not found");
-    goto MQTT_PARSE_OVER;
-  }
-
-  cJSON* readings = cJSON_GetObjectItem(device, "readings");
-  if (!readings || readings->type != cJSON_Array) {
-    mqttError("failed to parse msg, readings not found");
-    goto MQTT_PARSE_OVER;
-  }
-
-  int count = cJSON_GetArraySize(readings);
-  if (count <= 0) {
-    mqttError("failed to parse msg, readings size smaller than 0");
-    goto MQTT_PARSE_OVER;
-  }
-
-  int len = snprintf(sql, maxSize, "insert into");
-
-  for (int i = 0; i < count; ++i) {
-    cJSON* reading = cJSON_GetArrayItem(readings, i);
-    if (reading == NULL) continue;
-
-    cJSON* param = cJSON_GetObjectItem(reading, "param");
-    if (!param || param->type != cJSON_String) {
-      mqttError("failed to parse msg, param not found");
-      goto MQTT_PARSE_OVER;
-    }
-
-    cJSON* value = cJSON_GetObjectItem(reading, "value");
-    if (!value || value->type != cJSON_String) {
-      mqttError("failed to parse msg, value not found");
-      goto MQTT_PARSE_OVER;
-    }
-
-    cJSON* unit = cJSON_GetObjectItem(reading, "unit");
-    if (!unit || unit->type != cJSON_String) {
-      mqttError("failed to parse msg, unit not found");
-      goto MQTT_PARSE_OVER;
-    }
-
-    len += snprintf(sql + len, maxSize - len,
-        " mqttdb.serial_%s_%s using mqttdb.devices tags('%s', '%s', '%s', '%s', '%s') values(%" PRId64 ", %s)",
-        serial->valuestring, param->valuestring, name->valuestring, model->valuestring, serial->valuestring,
-        param->valuestring, unit->valuestring, timestamp->valueint * 1000, value->valuestring);
-  }
-
-  cJSON_free(root);
-  return sql;
-
-MQTT_PARSE_OVER:
-  cJSON_free(root);
-  free(sql);
-  return NULL;
-}
\ No newline at end of file

src/plugins/mqtt/src/mqttSystem.c

-/*
- * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
- *
- * This program is free software: you can use, redistribute, and/or modify
- * it under the terms of the GNU Affero General Public License, version 3
- * or later ("AGPL"), as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#define _DEFAULT_SOURCE
-#include "os.h"
-#include "mqtt.h"
-#include "mqttInit.h"
-#include "mqttLog.h"
-#include "mqttPayload.h"
-#include "tmqtt.h"
-#include "posix_sockets.h"
-#include "taos.h"
-#include "tglobal.h"
-#include "taoserror.h"
-
-struct SMqttReconnectState tsMqttStatus = {0};
-struct mqtt_client tsMqttClient = {0};
-static pthread_t   tsMqttClientDaemonThread = {0};
-static void*       tsMqttConnect = NULL;
-static bool        tsMqttIsRuning = false;
-
-int32_t mqttInitSystem() { return 0; }
-
-int32_t mqttStartSystem() {
-  tsMqttStatus.sendbufsz = MQTT_SEND_BUF_SIZE;
-  tsMqttStatus.recvbufsz = MQTT_RECV_BUF_SIZE;
-  tsMqttStatus.sendbuf = malloc(MQTT_SEND_BUF_SIZE);
-  tsMqttStatus.recvbuf = malloc(MQTT_RECV_BUF_SIZE);
-  tsMqttIsRuning = true;
-
-  mqtt_init_reconnect(&tsMqttClient, mqttReconnectClient, &tsMqttStatus, mqttPublishCallback);
-  if (pthread_create(&tsMqttClientDaemonThread, NULL, mqttClientRefresher, &tsMqttClient)) {
-    mqttError("mqtt failed to start daemon.");
-    mqttCleanupRes(EXIT_FAILURE, -1, NULL);
-    return -1;
-  }
-
-  mqttInfo("mqtt listening for topic:%s messages", tsMqttTopic);
-  return 0;
-}
-
-void mqttStopSystem() {
-  if (tsMqttIsRuning) {
-    tsMqttIsRuning = false;
-    tsMqttClient.error = MQTT_ERROR_SOCKET_ERROR;
-
-    taosMsleep(300);
-    mqttCleanupRes(EXIT_SUCCESS, tsMqttClient.socketfd, &tsMqttClientDaemonThread);
-
-    mqttInfo("mqtt is stopped");
-  }
-}
-
-void mqttCleanUpSystem() {
-  mqttStopSystem();
-  mqttInfo("mqtt is cleaned up");
-}
-
-void mqttPublishCallback(void** unused, struct mqtt_response_publish* published) {
-  const char* content = published->application_message;
-  mqttDebug("receive mqtt message, size:%d", (int)published->application_message_size);
-
-  if (tsMqttConnect == NULL) {
-    tsMqttConnect = taos_connect(NULL, "_root", tsInternalPass, "", 0);
-    if (tsMqttConnect == NULL) {
-      mqttError("failed to connect to tdengine, reason:%s", tstrerror(terrno));
-      return;
-    } else {
-      mqttInfo("successfully connected to the tdengine");
-    }
-  }
-
-  mqttTrace("receive mqtt message, content:%s", content);
-
-  char* sql = mqttConverJsonToSql((char*)content, (int)published->application_message_size);
-  if (sql != NULL) {
-    void* res = taos_query(tsMqttConnect, sql);
-    int   code = taos_errno(res);
-    if (code != 0) {
-      mqttError("failed to exec sql, reason:%s sql:%s", tstrerror(code), sql);
-    } else {
-      mqttTrace("successfully to exec sql:%s", sql);
-    }
-    taos_free_result(res);
-  } else {
-    mqttError("failed to parse mqtt message");
-  }
-}
-
-void* mqttClientRefresher(void* client) {
-  setThreadName("mqttCliRefresh");
-
-  while (tsMqttIsRuning) {
-    mqtt_sync((struct mqtt_client*)client);
-    taosMsleep(100);
-  }
-
-  mqttDebug("mqtt quit refresher");
-  return NULL;
-}
-
-void mqttCleanupRes(int status, int sockfd, pthread_t* client_daemon) {
-  mqttInfo("clean up mqtt module");
-  if (sockfd != -1) {
-    close(sockfd);
-  }
-
-  if (client_daemon != NULL) {
-    pthread_cancel(*client_daemon);
-  }
-}
-
-void mqttReconnectClient(struct mqtt_client* client, void** unused) {
-  mqttInfo("mqtt tries to connect to the mqtt server");
-
-  if (client->error != MQTT_ERROR_INITIAL_RECONNECT) {
-    close(client->socketfd);
-  }
-
-  if (client->error != MQTT_ERROR_INITIAL_RECONNECT) {
-    mqttError("mqtt client was in error state %s", mqtt_error_str(client->error));
-  }
-
-  int sockfd = open_nb_socket(tsMqttHostName, tsMqttPort);
-  if (sockfd < 0) {
-    mqttError("mqtt client failed to open socket %s:%s", tsMqttHostName, tsMqttPort);
-    //mqttCleanupRes(EXIT_FAILURE, sockfd, NULL);
-    return;
-  }
-
-  mqtt_reinit(client, sockfd, tsMqttStatus.sendbuf, tsMqttStatus.sendbufsz, tsMqttStatus.recvbuf, tsMqttStatus.recvbufsz);
-  mqtt_connect(client, tsMqttClientId, NULL, NULL, 0, tsMqttUser, tsMqttPass, MQTT_CONNECT_CLEAN_SESSION, 400);
-  mqtt_subscribe(client, tsMqttTopic, 0);
-}