int main(void) {
CommHandle *plugin = loadCommPlugin("/usr/lib/libzmqpubsub-client.so");
if (plugin) {
puts("Success: Plugin Loaded");
exit(EXIT_SUCCESS);
} else {
puts("Failed: Plugin Load");
exit(EXIT_FAILURE);
}
}
/** Initializes Service object. Creates the service object and calls its init method for further initialization.
* @param[in] specification service specification
* @return returns service handle upon successful and NULL otherwise
*/
CommHandle *createService(ServiceSpec *specification) {
CommHandle *commHandle = NULL;
char cwd_temp[1024];
// Parse configuration file
strcpy(cwd_temp, LIB_CONFIG_DIRECTORY);
strcat(cwd_temp, LIB_CONFIG_FILENAME);
if (!parseConfigFile(cwd_temp)) {
freeGlobals();
}
// load the plugin
// Considers the last path and loads the plugin interface
char *substrStart = g_configData.pluginDir;
char *substrEnd, *folderPath = NULL;
do {
if (*substrStart == ':') {
substrStart++;
}
if (folderPath != NULL) { // Incase of iteration, freeing the previously allocated dynamic memory
free(folderPath);
folderPath = NULL;
}
substrEnd = strstr(substrStart, ":");
if (substrEnd == NULL) {
folderPath = strdup(substrStart);
} else {
folderPath = strndup(substrStart, substrEnd - substrStart);
}
strcpy(cwd_temp, ""); // set empty string
// Parse plugin file
if (folderPath != NULL && *folderPath != '/') { // if path is not absolute path; then consider plugins directory
strcpy(cwd_temp, LIB_PLUGINS_DIRECTORY);
}
strcat(cwd_temp, "lib");
strcat(cwd_temp, specification->type.name);
strcat(cwd_temp, "-service.so");
if (fileExists(cwd_temp)) {
commHandle = loadCommPlugin(cwd_temp);
break;
}
}while((substrStart = strstr(substrStart, ":")) != NULL);
if (!commHandle) {
fprintf(stderr, "Plugin library \"lib%s-service.so\" not found\n", specification->type.name);
cleanUp(commHandle);
free(folderPath);
return NULL;
}
// Considers the last path and loads the plugin interface
substrStart = g_configData.pluginInterfaceDir;
do {
if (*substrStart == ':') {
substrStart++;
}
if (folderPath != NULL) { // Incase of iteration, freeing the previously allocated dynamic memory
free(folderPath);
folderPath = NULL;
}
substrEnd = strstr(substrStart, ":");
if (substrEnd == NULL) {
folderPath = strdup(substrStart);
} else {
folderPath = strndup(substrStart, substrEnd - substrStart);
}
strcpy(cwd_temp, ""); // set empty string
// Parse plugin interface file
if (folderPath != NULL && *folderPath != '/') { // if path is not absolute path; then consider plugins directory
strcpy(cwd_temp, LIB_CONFIG_DIRECTORY);
}
if (folderPath != NULL) {
strcat(cwd_temp, folderPath);
}
strcat(cwd_temp, "/");
strcat(cwd_temp, *(commHandle->interface));
strcat(cwd_temp, ".json");
if (fileExists(cwd_temp)) {
if (!parsePluginInterfaces(cwd_temp)) {
freeGlobals();
}
break;
}
}while((substrStart = strstr(substrStart, ":")) != NULL);
free(folderPath); // free the dynamic memory
if (loadCommInterfaces(commHandle) == false) {
cleanUp(commHandle);
return NULL;
}
if (commHandle->init) {
commHandle->init(specification);
}
return commHandle;
}