static int lua_script_init(lua_script_t *script) /* {{{ */
{
memset(script, 0, sizeof(*script));
/* initialize the lua context */
script->lua_state = luaL_newstate();
if (script->lua_state == NULL) {
ERROR("Lua plugin: luaL_newstate() failed.");
return (-1);
}
/* Open up all the standard Lua libraries. */
luaL_openlibs(script->lua_state);
/* Load the 'collectd' library */
#if LUA_VERSION_NUM < 502
lua_pushcfunction(script->lua_state, open_collectd);
lua_pushstring(script->lua_state, "collectd");
lua_call(script->lua_state, 1, 0);
#else
luaL_requiref(script->lua_state, "collectd", open_collectd, 1);
lua_pop(script->lua_state, 1);
#endif
/* Prepend BasePath to package.path */
if (base_path[0] != '\0') {
lua_getglobal(script->lua_state, "package");
lua_getfield(script->lua_state, -1, "path");
const char *cur_path = lua_tostring(script->lua_state, -1);
char *new_path = ssnprintf_alloc("%s/?.lua;%s", base_path, cur_path);
lua_pop(script->lua_state, 1);
lua_pushstring(script->lua_state, new_path);
free(new_path);
lua_setfield(script->lua_state, -2, "path");
lua_pop(script->lua_state, 1);
}
return (0);
} /* }}} int lua_script_init */
static int cj_config_add_url (oconfig_item_t *ci) /* {{{ */
{
cj_t *db;
int status = 0;
int i;
if ((ci->values_num != 1)
|| (ci->values[0].type != OCONFIG_TYPE_STRING))
{
WARNING ("curl_json plugin: The `URL' block "
"needs exactly one string argument.");
return (-1);
}
db = (cj_t *) malloc (sizeof (*db));
if (db == NULL)
{
ERROR ("curl_json plugin: malloc failed.");
return (-1);
}
memset (db, 0, sizeof (*db));
if (strcasecmp ("URL", ci->key) == 0)
status = cf_util_get_string (ci, &db->url);
else if (strcasecmp ("Sock", ci->key) == 0)
status = cf_util_get_string (ci, &db->sock);
else
{
ERROR ("curl_json plugin: cj_config: "
"Invalid key: %s", ci->key);
return (-1);
}
if (status != 0)
{
sfree (db);
return (status);
}
/* Fill the `cj_t' structure.. */
for (i = 0; i < ci->children_num; i++)
{
oconfig_item_t *child = ci->children + i;
if (strcasecmp ("Instance", child->key) == 0)
status = cf_util_get_string (child, &db->instance);
else if (strcasecmp ("Host", child->key) == 0)
status = cf_util_get_string (child, &db->host);
else if (db->url && strcasecmp ("User", child->key) == 0)
status = cf_util_get_string (child, &db->user);
else if (db->url && strcasecmp ("Password", child->key) == 0)
status = cf_util_get_string (child, &db->pass);
else if (strcasecmp ("Digest", child->key) == 0)
status = cf_util_get_boolean (child, &db->digest);
else if (db->url && strcasecmp ("VerifyPeer", child->key) == 0)
status = cf_util_get_boolean (child, &db->verify_peer);
else if (db->url && strcasecmp ("VerifyHost", child->key) == 0)
status = cf_util_get_boolean (child, &db->verify_host);
else if (db->url && strcasecmp ("CACert", child->key) == 0)
status = cf_util_get_string (child, &db->cacert);
else if (db->url && strcasecmp ("Header", child->key) == 0)
status = cj_config_append_string ("Header", &db->headers, child);
else if (db->url && strcasecmp ("Post", child->key) == 0)
status = cf_util_get_string (child, &db->post_body);
else if (strcasecmp ("Key", child->key) == 0)
status = cj_config_add_key (db, child);
else if (strcasecmp ("Interval", child->key) == 0)
status = cf_util_get_cdtime(child, &db->interval);
else
{
WARNING ("curl_json plugin: Option `%s' not allowed here.", child->key);
status = -1;
}
if (status != 0)
break;
}
if (status == 0)
{
if (db->tree == NULL)
{
WARNING ("curl_json plugin: No (valid) `Key' block within `%s' \"`%s'\".",
db->url ? "URL" : "Sock", db->url ? db->url : db->sock);
status = -1;
}
if (status == 0 && db->url)
status = cj_init_curl (db);
}
/* If all went well, register this database for reading */
if (status == 0)
{
user_data_t ud;
char *cb_name;
struct timespec interval = { 0, 0 };
CDTIME_T_TO_TIMESPEC (db->interval, &interval);
if (db->instance == NULL)
db->instance = strdup("default");
DEBUG ("curl_json plugin: Registering new read callback: %s",
db->instance);
memset (&ud, 0, sizeof (ud));
ud.data = (void *) db;
ud.free_func = cj_free;
cb_name = ssnprintf_alloc ("curl_json-%s-%s",
db->instance, db->url ? db->url : db->sock);
plugin_register_complex_read (/* group = */ NULL, cb_name, cj_read,
/* interval = */ (db->interval > 0) ? &interval : NULL,
&ud);
sfree (cb_name);
}
else
{
cj_free (db);
return (-1);
}
return (0);
}
static int cx_config_add_url (oconfig_item_t *ci) /* {{{ */
{
cx_t *db;
int status = 0;
int i;
if ((ci->values_num != 1)
|| (ci->values[0].type != OCONFIG_TYPE_STRING))
{
WARNING ("curl_xml plugin: The `URL' block "
"needs exactly one string argument.");
return (-1);
}
db = (cx_t *) malloc (sizeof (*db));
if (db == NULL)
{
ERROR ("curl_xml plugin: malloc failed.");
return (-1);
}
memset (db, 0, sizeof (*db));
db->timeout = -1;
if (strcasecmp ("URL", ci->key) == 0)
{
status = cf_util_get_string (ci, &db->url);
if (status != 0)
{
sfree (db);
return (status);
}
}
else
{
ERROR ("curl_xml plugin: cx_config: "
"Invalid key: %s", ci->key);
cx_free (db);
return (-1);
}
/* Fill the `cx_t' structure.. */
for (i = 0; i < ci->children_num; i++)
{
oconfig_item_t *child = ci->children + i;
if (strcasecmp ("Instance", child->key) == 0)
status = cf_util_get_string (child, &db->instance);
else if (strcasecmp ("Host", child->key) == 0)
status = cf_util_get_string (child, &db->host);
else if (strcasecmp ("User", child->key) == 0)
status = cf_util_get_string (child, &db->user);
else if (strcasecmp ("Password", child->key) == 0)
status = cf_util_get_string (child, &db->pass);
else if (strcasecmp ("Digest", child->key) == 0)
status = cf_util_get_boolean (child, &db->digest);
else if (strcasecmp ("VerifyPeer", child->key) == 0)
status = cf_util_get_boolean (child, &db->verify_peer);
else if (strcasecmp ("VerifyHost", child->key) == 0)
status = cf_util_get_boolean (child, &db->verify_host);
else if (strcasecmp ("CACert", child->key) == 0)
status = cf_util_get_string (child, &db->cacert);
else if (strcasecmp ("xpath", child->key) == 0)
status = cx_config_add_xpath (db, child);
else if (strcasecmp ("Header", child->key) == 0)
status = cx_config_append_string ("Header", &db->headers, child);
else if (strcasecmp ("Post", child->key) == 0)
status = cf_util_get_string (child, &db->post_body);
else if (strcasecmp ("Namespace", child->key) == 0)
status = cx_config_add_namespace (db, child);
else if (strcasecmp ("Timeout", child->key) == 0)
status = cf_util_get_int (child, &db->timeout);
else
{
WARNING ("curl_xml plugin: Option `%s' not allowed here.", child->key);
status = -1;
}
if (status != 0)
break;
}
if (status == 0)
{
if (db->list == NULL)
{
WARNING ("curl_xml plugin: No (valid) `Key' block "
"within `URL' block `%s'.", db->url);
status = -1;
}
if (status == 0)
status = cx_init_curl (db);
}
/* If all went well, register this database for reading */
if (status == 0)
{
user_data_t ud;
char *cb_name;
if (db->instance == NULL)
db->instance = strdup("default");
DEBUG ("curl_xml plugin: Registering new read callback: %s",
db->instance);
memset (&ud, 0, sizeof (ud));
ud.data = (void *) db;
ud.free_func = cx_free;
cb_name = ssnprintf_alloc ("curl_xml-%s-%s", db->instance, db->url);
plugin_register_complex_read (/* group = */ "curl_xml", cb_name, cx_read,
/* interval = */ 0, &ud);
sfree (cb_name);
}
else
{
cx_free (db);
return (-1);
}
return (0);
} /* }}} int cx_config_add_url */
static int cdbi_config_add_database (oconfig_item_t *ci) /* {{{ */
{
cdbi_database_t *db;
int status;
int i;
if ((ci->values_num != 1)
|| (ci->values[0].type != OCONFIG_TYPE_STRING))
{
WARNING ("dbi plugin: The `Database' block "
"needs exactly one string argument.");
return (-1);
}
db = calloc (1, sizeof (*db));
if (db == NULL)
{
ERROR ("dbi plugin: calloc failed.");
return (-1);
}
status = cf_util_get_string (ci, &db->name);
if (status != 0)
{
sfree (db);
return (status);
}
/* Fill the `cdbi_database_t' structure.. */
for (i = 0; i < ci->children_num; i++)
{
oconfig_item_t *child = ci->children + i;
if (strcasecmp ("Driver", child->key) == 0)
status = cf_util_get_string (child, &db->driver);
else if (strcasecmp ("DriverOption", child->key) == 0)
status = cdbi_config_add_database_driver_option (db, child);
else if (strcasecmp ("SelectDB", child->key) == 0)
status = cf_util_get_string (child, &db->select_db);
else if (strcasecmp ("Query", child->key) == 0)
status = udb_query_pick_from_list (child, queries, queries_num,
&db->queries, &db->queries_num);
else if (strcasecmp ("Host", child->key) == 0)
status = cf_util_get_string (child, &db->host);
else if (strcasecmp ("Interval", child->key) == 0)
status = cf_util_get_cdtime(child, &db->interval);
else
{
WARNING ("dbi plugin: Option `%s' not allowed here.", child->key);
status = -1;
}
if (status != 0)
break;
}
/* Check that all necessary options have been given. */
while (status == 0)
{
if (db->driver == NULL)
{
WARNING ("dbi plugin: `Driver' not given for database `%s'", db->name);
status = -1;
}
if (db->driver_options_num == 0)
{
WARNING ("dbi plugin: No `DriverOption' given for database `%s'. "
"This will likely not work.", db->name);
}
break;
} /* while (status == 0) */
while ((status == 0) && (db->queries_num > 0))
{
size_t j;
db->q_prep_areas = calloc (db->queries_num, sizeof (*db->q_prep_areas));
if (db->q_prep_areas == NULL)
{
WARNING ("dbi plugin: calloc failed");
status = -1;
break;
}
for (j = 0; j < db->queries_num; ++j)
{
db->q_prep_areas[j]
= udb_query_allocate_preparation_area (db->queries[j]);
if (db->q_prep_areas[j] == NULL)
{
WARNING ("dbi plugin: udb_query_allocate_preparation_area failed");
status = -1;
break;
}
}
break;
}
/* If all went well, add this database to the global list of databases. */
if (status == 0)
{
cdbi_database_t **temp;
temp = realloc (databases,
sizeof (*databases) * (databases_num + 1));
if (temp == NULL)
{
ERROR ("dbi plugin: realloc failed");
status = -1;
}
else
{
user_data_t ud;
char *name = NULL;
databases = temp;
databases[databases_num] = db;
databases_num++;
memset (&ud, 0, sizeof (ud));
ud.data = (void *) db;
ud.free_func = NULL;
name = ssnprintf_alloc("dbi:%s", db->name);
plugin_register_complex_read (/* group = */ NULL,
/* name = */ name ? name : db->name,
/* callback = */ cdbi_read_database,
/* interval = */ (db->interval > 0) ? db->interval : 0,
/* user_data = */ &ud);
free (name);
}
}
if (status != 0)
{
cdbi_database_free (db);
return (-1);
}
return (0);
} /* }}} int cdbi_config_add_database */
static int cx_config_add_url(oconfig_item_t *ci) /* {{{ */
{
if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING)) {
WARNING("curl_xml plugin: The `URL' block "
"needs exactly one string argument.");
return -1;
}
cx_t *db = calloc(1, sizeof(*db));
if (db == NULL) {
ERROR("curl_xml plugin: calloc failed.");
return -1;
}
db->instance = strdup("default");
if (db->instance == NULL) {
ERROR("curl_xml plugin: strdup failed.");
sfree(db);
return -1;
}
db->xpath_list = llist_create();
if (db->xpath_list == NULL) {
ERROR("curl_xml plugin: list creation failed.");
sfree(db->instance);
sfree(db);
return -1;
}
db->timeout = -1;
int status = cf_util_get_string(ci, &db->url);
if (status != 0) {
llist_destroy(db->xpath_list);
sfree(db->instance);
sfree(db);
return status;
}
/* Fill the `cx_t' structure.. */
for (int i = 0; i < ci->children_num; i++) {
oconfig_item_t *child = ci->children + i;
if (strcasecmp("Instance", child->key) == 0)
status = cf_util_get_string(child, &db->instance);
else if (strcasecmp("Plugin", child->key) == 0)
status = cf_util_get_string(child, &db->plugin_name);
else if (strcasecmp("Host", child->key) == 0)
status = cf_util_get_string(child, &db->host);
else if (strcasecmp("User", child->key) == 0)
status = cf_util_get_string(child, &db->user);
else if (strcasecmp("Password", child->key) == 0)
status = cf_util_get_string(child, &db->pass);
else if (strcasecmp("Digest", child->key) == 0)
status = cf_util_get_boolean(child, &db->digest);
else if (strcasecmp("VerifyPeer", child->key) == 0)
status = cf_util_get_boolean(child, &db->verify_peer);
else if (strcasecmp("VerifyHost", child->key) == 0)
status = cf_util_get_boolean(child, &db->verify_host);
else if (strcasecmp("CACert", child->key) == 0)
status = cf_util_get_string(child, &db->cacert);
else if (strcasecmp("xpath", child->key) == 0)
status = cx_config_add_xpath(db, child);
else if (strcasecmp("Header", child->key) == 0)
status = cx_config_append_string("Header", &db->headers, child);
else if (strcasecmp("Post", child->key) == 0)
status = cf_util_get_string(child, &db->post_body);
else if (strcasecmp("Namespace", child->key) == 0)
status = cx_config_add_namespace(db, child);
else if (strcasecmp("Timeout", child->key) == 0)
status = cf_util_get_int(child, &db->timeout);
else if (strcasecmp("Statistics", child->key) == 0) {
db->stats = curl_stats_from_config(child);
if (db->stats == NULL)
status = -1;
} else {
WARNING("curl_xml plugin: Option `%s' not allowed here.", child->key);
status = -1;
}
if (status != 0)
break;
}
if (status != 0) {
cx_free(db);
return status;
}
if (llist_size(db->xpath_list) == 0) {
WARNING("curl_xml plugin: No `xpath' block within `URL' block `%s'.",
db->url);
cx_free(db);
return -1;
}
if (cx_init_curl(db) != 0) {
cx_free(db);
return -1;
}
/* If all went well, register this database for reading */
DEBUG("curl_xml plugin: Registering new read callback: %s", db->instance);
char *cb_name = ssnprintf_alloc("curl_xml-%s-%s", db->instance, db->url);
plugin_register_complex_read(/* group = */ "curl_xml", cb_name, cx_read,
/* interval = */ 0,
&(user_data_t){
.data = db, .free_func = cx_free,
});