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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2017, Greenfield Technologies Ltd.
*
* Nir Simionovich <nirs@greenfieldtech.net>
* who freely borrowed code from the cel manager equivalents
* (see cel/cel_manager.c)
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
*
* \brief Asterisk Channel Event Beanstalkd backend
*
* This module requires the beanstalk-client library, avaialble from
* https://github.com/deepfryed/beanstalk-client
* \ingroup cel_drivers
*/
/*! \li \ref cek_beanstalkd.c uses the configuration file \ref cel.conf
* \addtogroup configuration_file Configuration Files
*/
/*!
* \page cel.conf cel.conf
* \verbinclude cel.conf.sample
*/
/*** MODULEINFO
<depend>beanstalk</depend>
<support_level>extended</support_level>
***/
#include "asterisk.h"
#include "asterisk/channel.h"
#include "asterisk/cel.h"
#include "asterisk/module.h"
#include "asterisk/logger.h"
#include "asterisk/utils.h"
#include "asterisk/manager.h"
#include "asterisk/config.h"
#include "asterisk/json.h"
#include "beanstalk.h"
static const char DATE_FORMAT[] = "%Y-%m-%d %T";
static const char CONF_FILE[] = "cel_beanstalkd.conf";
/*! \brief Beanstalk CEL is off by default */
#define CEL_BEANSTALK_ENABLED_DEFAULT 0
static int enablecel;
/*! \brief show_user_def is off by default */
#define CEL_SHOW_USERDEF_DEFAULT 0
#define CEL_BACKEND_NAME "Beanstalk Event Logging"
#define BEANSTALK_JOB_SIZE 4096
#define BEANSTALK_JOB_PRIORITY 99
#define BEANSTALK_JOB_TTR 60
#define BEANSTALK_JOB_DELAY 0
#define DEFAULT_BEANSTALK_HOST "127.0.0.1"
#define DEFAULT_BEANSTALK_PORT 11300
#define DEFAULT_BEANSTALK_TUBE "asterisk-cel"
static char *bs_host;
static int bs_port;
static char *bs_tube;
static int priority;
AST_RWLOCK_DEFINE_STATIC(config_lock);
static void cel_bs_put(struct ast_event *event)
{
struct ast_tm timeresult;
char start_time[80];
char *cel_buffer;
int bs_id;
int bs_socket;
struct ast_json *t_cel_json;
struct ast_cel_event_record record = {
.version = AST_CEL_EVENT_RECORD_VERSION,
};
if (!enablecel) {
return;
}
if (ast_cel_fill_record(event, &record)) {
return;
}
ast_rwlock_rdlock(&config_lock);
bs_socket = bs_connect(bs_host, bs_port);
if (bs_use(bs_socket, bs_tube) != BS_STATUS_OK) {
ast_log(LOG_ERROR, "Connection to Beanstalk tube %s @ %s:%d had failed", bs_tube, bs_host, bs_port);
ast_rwlock_unlock(&config_lock);
return;
}
ast_localtime(&record.event_time, &timeresult, NULL);
ast_strftime(start_time, sizeof(start_time), DATE_FORMAT, &timeresult);
ast_rwlock_unlock(&config_lock);
t_cel_json = ast_json_pack("{s:s, s:s, s:s, s:s, s:s, s:s, s:s, s:s, s:s, s:s, s:s, s:s, s:s, s:s, s:s, s:s, s:s, s:s, s:s, s:s}",
"EventName", S_OR(record.event_name, ""),
"AccountCode", S_OR(record.account_code, ""),
"CallerIDnum", S_OR(record.caller_id_num, ""),
"CallerIDname", S_OR(record.caller_id_name, ""),
"CallerIDani", S_OR(record.caller_id_ani, ""),
"CallerIDrdnis", S_OR(record.caller_id_rdnis, ""),
"CallerIDdnid", S_OR(record.caller_id_dnid, ""),
"Exten", S_OR(record.extension, ""),
"Context", S_OR(record.context, ""),
"Channel", S_OR(record.channel_name, ""),
"Application", S_OR(record.application_name, ""),
"AppData", S_OR(record.application_data, ""),
"EventTime", S_OR(start_time, ""),
"AMAFlags", S_OR(ast_channel_amaflags2string(record.amaflag), ""),
"UniqueID", S_OR(record.unique_id, ""),
"LinkedID", S_OR(record.linked_id, ""),
"Userfield", S_OR(record.user_field, ""),
"Peer", S_OR(record.peer_account, ""),
"PeerAccount", S_OR(record.peer_account, ""),
"Extra", S_OR(record.extra, "")
);
cel_buffer = ast_json_dump_string(t_cel_json);
ast_json_unref(t_cel_json);
bs_id = bs_put(bs_socket, priority, BEANSTALK_JOB_DELAY, BEANSTALK_JOB_TTR, cel_buffer, strlen(cel_buffer));
if (bs_id > 0) {
ast_log(LOG_DEBUG, "Successfully created job %d with %s\n", bs_id, cel_buffer);
} else {
ast_log(LOG_ERROR, "CDR job creation failed for %s\n", cel_buffer);
}
bs_disconnect(bs_socket);
ast_json_free(cel_buffer);
}
static int load_config(int reload)
{
const char *cat = NULL;
struct ast_config *cfg;
struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
struct ast_variable *v;
int newenablecel = CEL_BEANSTALK_ENABLED_DEFAULT;
cfg = ast_config_load(CONF_FILE, config_flags);
if (cfg == CONFIG_STATUS_FILEUNCHANGED) {
return 0;
}
if (cfg == CONFIG_STATUS_FILEINVALID) {
ast_log(LOG_WARNING, "Configuration file '%s' is invalid. CEL Beanstalkd Module not activated.\n",
CONF_FILE);
return -1;
} else if (!cfg) {
ast_log(LOG_WARNING, "Failed to load configuration file. CEL Beanstalkd Module not activated.\n");
if (enablecel) {
ast_cel_backend_unregister(CEL_BACKEND_NAME);
}
enablecel = 0;
return -1;
}
if (reload) {
ast_rwlock_wrlock(&config_lock);
ast_free(bs_host);
ast_free(bs_tube);
}
/* Bootstrap the default configuration */
bs_host = ast_strdup(DEFAULT_BEANSTALK_HOST);
bs_port = DEFAULT_BEANSTALK_PORT;
bs_tube = ast_strdup(DEFAULT_BEANSTALK_TUBE);
priority = BEANSTALK_JOB_PRIORITY;
while ((cat = ast_category_browse(cfg, cat))) {
if (strcasecmp(cat, "general")) {
continue;
}
for (v = ast_variable_browse(cfg, cat); v; v = v->next) {
if (!strcasecmp(v->name, "enabled")) {
newenablecel = ast_true(v->value) ? 1 : 0;
} else if (!strcasecmp(v->name, "host")) {
ast_free(bs_host);
bs_host = ast_strdup(v->value);
} else if (!strcasecmp(v->name, "port")) {
bs_port = atoi(v->value);
} else if (!strcasecmp(v->name, "tube")) {
ast_free(bs_tube);
bs_tube = ast_strdup(v->value);
} else if (!strcasecmp(v->name, "priority")) {
priority = atoi(v->value);
} else {
ast_log(LOG_NOTICE, "Unknown option '%s' specified "
"for CEL beanstalk backend.\n", v->name);
}
}
}
if (reload) {
ast_rwlock_unlock(&config_lock);
}
ast_config_destroy(cfg);
if (enablecel && !newenablecel) {
ast_cel_backend_unregister(CEL_BACKEND_NAME);
} else if (!enablecel && newenablecel) {
if (ast_cel_backend_register(CEL_BACKEND_NAME, cel_bs_put)) {
ast_log(LOG_ERROR, "Unable to register Beanstalkd CEL handling\n");
}
}
enablecel = newenablecel;
return 0;
}
static int unload_module(void)
{
ast_cel_backend_unregister(CEL_BACKEND_NAME);
ast_free(bs_host);
ast_free(bs_tube);
return 0;
}
static int load_module(void)
{
if (load_config(0)) {
return AST_MODULE_LOAD_DECLINE;
}
return AST_MODULE_LOAD_SUCCESS;
}
static int reload(void)
{
return load_config(1);
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Beanstalkd CEL Backend",
.support_level = AST_MODULE_SUPPORT_EXTENDED,
.load = load_module,
.unload = unload_module,
.reload = reload,
.load_pri = AST_MODPRI_CDR_DRIVER,
