ubuntu mosquitto的扩展插件使用

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猴君
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Mosquitto是一个流行的MQTT消息代理,它支持扩展插件,可以通过这些插件来实现自定义的功能

  1. 安装Mosquitto插件开发工具:
sudo apt-get install libmosquitto-dev 
  1. 创建一个新的插件项目:
mkdir my_plugin cd my_plugin touch my_plugin.c Makefile 
  1. 编写插件代码(my_plugin.c):
#include<stdio.h> #include <mosquitto_plugin.h> #include <mosquitto.h>  int mosquitto_plugin_version(int supported_version_count, const int *supported_versions) {     int i;     for (i = 0; i< supported_version_count; i++) {         if (supported_versions[i] == 4) {             return 4;         }     }     return -1; }  int mosquitto_plugin_init(mosquitto_plugin_id_t *identifier, void **user_data, struct mosquitto_opt *opts, int opt_count) {     printf("Plugin initialized.\n");     return MOSQ_ERR_SUCCESS; }  int mosquitto_plugin_cleanup(void *user_data, struct mosquitto_opt *opts, int opt_count) {     printf("Plugin cleaned up.\n");     return MOSQ_ERR_SUCCESS; } 
  1. 编写Makefile:
CC=gcc CFLAGS=-I/usr/local/include -fPIC -Wall -Wextra LDFLAGS=-shared TARGET=my_plugin.so SRC=my_plugin.c  all: $(TARGET)  $(TARGET): $(SRC) 	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^  clean: 	rm -f $(TARGET) 
  1. 编译插件:
make 
  1. 将插件复制到Mosquitto插件目录:
sudo cp my_plugin.so /usr/local/lib/mosquitto/ 
  1. 配置Mosquitto以加载插件:

编辑/etc/mosquitto/mosquitto.conf文件,添加以下内容:

plugin_dir /usr/local/lib/mosquitto/ plugin my_plugin.so 
  1. 重启Mosquitto服务:
sudo systemctl restart mosquitto 

现在,当Mosquitto启动时,它将加载并运行my_plugin插件。你可以根据需要修改插件代码以实现自定义功能。更多关于Mosquitto插件开发的信息,请参考官方文档:https://mosquitto.org/man/mosquitto-plugin-3.html

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