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#define BACKEND_NAME "mqtt"
#include <string.h>
#include "mqtt.h"
MM_PLUGIN_API int init(){
backend mqtt = {
.name = BACKEND_NAME,
.conf = mqtt_configure,
.create = mqtt_instance,
.conf_instance = mqtt_configure_instance,
.channel = mqtt_channel,
.handle = mqtt_set,
.process = mqtt_handle,
.start = mqtt_start,
.shutdown = mqtt_shutdown
};
//register backend
if(mm_backend_register(mqtt)){
LOG("Failed to register backend");
return 1;
}
return 0;
}
static size_t mqtt_varint_decode(uint8_t* buffer, uint32_t* result){
//TODO
return 0;
}
static int mqtt_configure(char* option, char* value){
LOG("This backend does not take global configuration");
return 1;
}
static int mqtt_configure_instance(instance* inst, char* option, char* value){
mqtt_instance_data* data = (mqtt_instance_data*) inst->impl;
char* token = value;
if(!strcmp(option, "user")){
free(data->user);
data->user = strdup(value);
return 0;
}
else if(!strcmp(option, "password")){
free(data->password);
data->user = strdup(value);
return 0;
}
else if(!strcmp(option, "host")){
//mqtt url may be of the form
//mqtt[s]://[username][:password]@host.domain[:port]
token = strchr(value, ':');
//TODO
}
LOGPF("Unknown instance configuration option %s on instance %s", option, inst->name);
return 1;
}
static int mqtt_instance(instance* inst){
//TODO
return 0;
}
static channel* mqtt_channel(instance* inst, char* spec, uint8_t flags){
//TODO
return NULL;
}
static int mqtt_set(instance* inst, size_t num, channel** c, channel_value* v){
//TODO
return 0;
}
static int mqtt_handle(size_t num, managed_fd* fds){
//TODO
return 0;
}
static int mqtt_start(size_t n, instance** inst){
//TODO
return 0;
}
static int mqtt_shutdown(size_t n, instance** inst){
size_t u, p;
mqtt_instance_data* data = NULL;
for(u = 0; u < n; u++){
data = (mqtt_instance_data*) inst[u]->impl;
for(p = 0; p < data->nchannels; p++){
free(data->channel[p]);
}
free(data->channel);
free(data->host);
free(data->port);
free(data->user);
free(data->password);
free(inst[u]->impl);
inst[u]->impl = NULL;
}
LOG("Backend shut down");
return 0;
}
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