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diff --git a/src/core/plugin.c b/src/core/plugin.c
index e6df9e9c2a9da7b1746fba2121492dbce630f0bc..83ef6ead9cb150aa447515ba60036691eedfd451 100644 (file)
--- a/src/core/plugin.c
+++ b/src/core/plugin.c
#include <pthread.h>
+/* helper to access info attributes */
+#define INFO_GET(i, attr) \
+ ((i)->attr ? (i)->attr : #attr" not set")
+
/*
* private data types
*/
-struct sdb_plugin_info {
- char *plugin_name;
- char *filename;
-
- /* public attributes */
- char *name;
-
- char *description;
- char *copyright;
- char *license;
-
- int version;
- int plugin_version;
-};
-#define SDB_PLUGIN_INFO_INIT { \
- /* plugin_name */ NULL, /* filename */ NULL, \
- /* name */ NULL, /* desc */ NULL, \
- /* copyright */ NULL, /* license */ NULL, \
- /* version */ -1, /* plugin_version */ -1 }
-#define INFO_GET(i, attr) \
- ((i)->attr ? (i)->attr : #attr" not set")
-
typedef struct {
sdb_object_t super;
sdb_plugin_ctx_t public;
void *cb_callback;
sdb_object_t *cb_user_data;
ctx_t *cb_ctx;
-} sdb_plugin_cb_t;
-#define SDB_PLUGIN_CB_INIT { SDB_OBJECT_INIT, \
+} callback_t;
+#define CB_INIT { SDB_OBJECT_INIT, \
/* callback = */ NULL, /* user_data = */ NULL, \
SDB_PLUGIN_CTX_INIT }
+#define CB(obj) ((callback_t *)(obj))
+#define CONST_CB(obj) ((const callback_t *)(obj))
typedef struct {
- sdb_plugin_cb_t super;
+ callback_t super;
#define ccb_callback super.cb_callback
#define ccb_user_data super.cb_user_data
#define ccb_ctx super.cb_ctx
sdb_time_t ccb_interval;
sdb_time_t ccb_next_update;
-} sdb_plugin_collector_cb_t;
+} collector_t;
+#define CCB(obj) ((collector_t *)(obj))
+#define CONST_CCB(obj) ((const collector_t *)(obj))
+
+typedef struct {
+ callback_t super; /* cb_callback will always be NULL */
+#define w_user_data super.cb_user_data
+#define w_ctx super.cb_ctx
+ sdb_store_writer_t impl;
+} writer_t;
+#define WRITER(obj) ((writer_t *)(obj))
-#define SDB_PLUGIN_CB(obj) ((sdb_plugin_cb_t *)(obj))
-#define SDB_CONST_PLUGIN_CB(obj) ((const sdb_plugin_cb_t *)(obj))
-#define SDB_PLUGIN_CCB(obj) ((sdb_plugin_collector_cb_t *)(obj))
-#define SDB_CONST_PLUGIN_CCB(obj) ((const sdb_plugin_collector_cb_t *)(obj))
+typedef struct {
+ callback_t super; /* cb_callback will always be NULL */
+#define r_user_data super.cb_user_data
+#define r_ctx super.cb_ctx
+ sdb_store_reader_t impl;
+} reader_t;
+#define READER(obj) ((reader_t *)(obj))
/*
* private variables
static sdb_plugin_info_t plugin_default_info = SDB_PLUGIN_INFO_INIT;
static pthread_key_t plugin_ctx_key;
-static _Bool plugin_ctx_key_initialized = 0;
+static bool plugin_ctx_key_initialized = 0;
/* a list of the plugin contexts of all registered plugins */
static sdb_llist_t *all_plugins = NULL;
static sdb_llist_t *cname_list = NULL;
static sdb_llist_t *shutdown_list = NULL;
static sdb_llist_t *log_list = NULL;
+static sdb_llist_t *ts_fetcher_list = NULL;
+static sdb_llist_t *writer_list = NULL;
+static sdb_llist_t *reader_list = NULL;
+
+static struct {
+ const char *type;
+ sdb_llist_t **list;
+} all_lists[] = {
+ { "config", &config_list },
+ { "init", &init_list },
+ { "collector", &collector_list },
+ { "cname", &cname_list },
+ { "shutdown", &shutdown_list },
+ { "log", &log_list },
+ { "timeseries fetcher", &ts_fetcher_list },
+ { "store writer", &writer_list },
+ { "store reader", &reader_list },
+};
/*
* private helper functions
if (info->filename)
free(info->filename);
- if (info->name)
- free(info->name);
if (info->description)
free(info->description);
if (info->copyright)
static int
plugin_cmp_next_update(const sdb_object_t *a, const sdb_object_t *b)
{
- const sdb_plugin_collector_cb_t *ccb1
- = (const sdb_plugin_collector_cb_t *)a;
- const sdb_plugin_collector_cb_t *ccb2
- = (const sdb_plugin_collector_cb_t *)b;
+ const collector_t *ccb1 = (const collector_t *)a;
+ const collector_t *ccb2 = (const collector_t *)b;
assert(ccb1 && ccb2);
static int
plugin_lookup_by_name(const sdb_object_t *obj, const void *id)
{
- const sdb_plugin_cb_t *cb = SDB_CONST_PLUGIN_CB(obj);
+ const callback_t *cb = CONST_CB(obj);
const char *name = id;
- assert(cb && id && cb->cb_ctx);
+ assert(cb && id);
+
+ /* when a plugin was registered from outside a plugin (e.g. the core),
+ * we don't have a plugin context */
+ if (! cb->cb_ctx)
+ return 1;
+
if (!strcasecmp(cb->cb_ctx->info.plugin_name, name))
return 0;
return 1;
} /* plugin_lookup_by_name */
+/* since this function is called from sdb_plugin_reconfigure_finish()
+ * when iterating through all_plugins, we may not do any additional
+ * modifications to all_plugins except for the optional removal */
static void
plugin_unregister_by_name(const char *plugin_name)
{
sdb_object_t *obj;
size_t i;
- struct {
- const char *type;
- sdb_llist_t *list;
- } all_lists[] = {
- { "config", config_list },
- { "init", init_list },
- { "collector", collector_list },
- { "cname", cname_list },
- { "shutdown", shutdown_list },
- { "log", log_list },
- };
-
for (i = 0; i < SDB_STATIC_ARRAY_LEN(all_lists); ++i) {
- const char *type = all_lists[i].type;
- sdb_llist_t *list = all_lists[i].list;
+ const char *type = all_lists[i].type;
+ sdb_llist_t *list = *all_lists[i].list;
while (1) {
- sdb_plugin_cb_t *cb;
+ callback_t *cb;
- cb = SDB_PLUGIN_CB(sdb_llist_remove(list,
+ cb = CB(sdb_llist_remove(list,
plugin_lookup_by_name, plugin_name));
if (! cb)
break;
+ assert(cb->cb_ctx);
+
sdb_log(SDB_LOG_INFO, "core: Unregistering "
"%s callback '%s' (module %s)", type, cb->super.name,
cb->cb_ctx->info.plugin_name);
}
obj = sdb_llist_search_by_name(all_plugins, plugin_name);
- if (obj->ref_cnt <= 1)
+ /* when called from sdb_plugin_reconfigure_finish, the object has already
+ * been removed from the list */
+ if (obj && (obj->ref_cnt <= 1)) {
sdb_llist_remove_by_name(all_plugins, plugin_name);
+ sdb_object_deref(obj);
+ }
/* else: other callbacks still reference it */
- sdb_object_deref(obj);
} /* plugin_unregister_by_name */
/*
ctx_destroy
};
-static ctx_t *
-ctx_create(const char *name)
-{
- ctx_t *ctx;
-
- ctx = CTX(sdb_object_create(name, ctx_type));
- if (! ctx)
- return NULL;
-
- if (! plugin_ctx_key_initialized)
- ctx_key_init();
- sdb_object_ref(SDB_OBJ(ctx));
- pthread_setspecific(plugin_ctx_key, ctx);
- return ctx;
-} /* ctx_create */
-
static ctx_t *
ctx_get(void)
{
return old;
} /* ctx_set */
+static ctx_t *
+ctx_create(const char *name)
+{
+ ctx_t *ctx;
+
+ ctx = CTX(sdb_object_create(name, ctx_type));
+ if (! ctx)
+ return NULL;
+
+ if (! plugin_ctx_key_initialized)
+ ctx_key_init();
+ ctx_set(ctx);
+ return ctx;
+} /* ctx_create */
+
static int
plugin_cb_init(sdb_object_t *obj, va_list ap)
{
return -1;
}
- SDB_PLUGIN_CB(obj)->cb_callback = callback;
- SDB_PLUGIN_CB(obj)->cb_ctx = ctx_get();
- sdb_object_ref(SDB_OBJ(SDB_PLUGIN_CB(obj)->cb_ctx));
+ /* cb_ctx may be NULL if the plugin was not registered by a plugin */
+
+ CB(obj)->cb_callback = callback;
+ CB(obj)->cb_ctx = ctx_get();
+ sdb_object_ref(SDB_OBJ(CB(obj)->cb_ctx));
sdb_object_ref(ud);
- SDB_PLUGIN_CB(obj)->cb_user_data = ud;
+ CB(obj)->cb_user_data = ud;
return 0;
} /* plugin_cb_init */
plugin_cb_destroy(sdb_object_t *obj)
{
assert(obj);
- sdb_object_deref(SDB_PLUGIN_CB(obj)->cb_user_data);
- sdb_object_deref(SDB_OBJ(SDB_PLUGIN_CB(obj)->cb_ctx));
+ sdb_object_deref(CB(obj)->cb_user_data);
+ sdb_object_deref(SDB_OBJ(CB(obj)->cb_ctx));
} /* plugin_cb_destroy */
-static sdb_type_t sdb_plugin_cb_type = {
- sizeof(sdb_plugin_cb_t),
+static sdb_type_t callback_type = {
+ sizeof(callback_t),
plugin_cb_init,
plugin_cb_destroy
};
-static sdb_type_t sdb_plugin_collector_cb_type = {
- sizeof(sdb_plugin_collector_cb_t),
+static sdb_type_t collector_type = {
+ sizeof(collector_t),
plugin_cb_init,
plugin_cb_destroy
};
static int
-plugin_add_callback(sdb_llist_t **list, const char *type,
- const char *name, void *callback, sdb_object_t *user_data)
+plugin_writer_init(sdb_object_t *obj, va_list ap)
{
- sdb_object_t *obj;
+ sdb_store_writer_t *impl = va_arg(ap, sdb_store_writer_t *);
+ sdb_object_t *ud = va_arg(ap, sdb_object_t *);
- if ((! name) || (! callback))
+ assert(impl);
+
+ if ((! impl->store_host) || (! impl->store_service)
+ || (! impl->store_metric) || (! impl->store_attribute)) {
+ sdb_log(SDB_LOG_ERR, "core: store writer callback '%s' "
+ "does not fully implement the writer interface.",
+ obj->name);
+ return -1;
+ }
+ if (sdb_llist_search_by_name(writer_list, obj->name)) {
+ sdb_log(SDB_LOG_WARNING, "core: store writer callback '%s' "
+ "has already been registered. Ignoring newly "
+ "registered version.", obj->name);
return -1;
+ }
- assert(list);
+ /* ctx may be NULL if the callback was not registered by a plugin */
- if (! *list)
- *list = sdb_llist_create();
- if (! *list)
- return -1;
+ WRITER(obj)->impl = *impl;
+ WRITER(obj)->w_ctx = ctx_get();
+ sdb_object_ref(SDB_OBJ(WRITER(obj)->w_ctx));
- obj = sdb_object_create(name, sdb_plugin_cb_type,
- list, type, callback, user_data);
- if (! obj)
- return -1;
+ sdb_object_ref(ud);
+ WRITER(obj)->w_user_data = ud;
+ return 0;
+} /* plugin_writer_init */
- if (sdb_llist_append(*list, obj)) {
- sdb_object_deref(obj);
+static void
+plugin_writer_destroy(sdb_object_t *obj)
+{
+ assert(obj);
+ sdb_object_deref(WRITER(obj)->w_user_data);
+ sdb_object_deref(SDB_OBJ(WRITER(obj)->w_ctx));
+} /* plugin_writer_destroy */
+
+static sdb_type_t writer_type = {
+ sizeof(writer_t),
+
+ plugin_writer_init,
+ plugin_writer_destroy
+};
+
+static int
+plugin_reader_init(sdb_object_t *obj, va_list ap)
+{
+ sdb_store_reader_t *impl = va_arg(ap, sdb_store_reader_t *);
+ sdb_object_t *ud = va_arg(ap, sdb_object_t *);
+
+ assert(impl);
+
+ if ((! impl->prepare_query) || (! impl->execute_query)) {
+ sdb_log(SDB_LOG_ERR, "core: store reader callback '%s' "
+ "does not fully implement the reader interface.",
+ obj->name);
+ return -1;
+ }
+ if (sdb_llist_search_by_name(reader_list, obj->name)) {
+ sdb_log(SDB_LOG_WARNING, "core: store reader callback '%s' "
+ "has already been registered. Ignoring newly "
+ "registered version.", obj->name);
return -1;
}
- /* pass control to the list */
- sdb_object_deref(obj);
+ /* ctx may be NULL if the callback was not registered by a plugin */
- sdb_log(SDB_LOG_INFO, "core: Registered %s callback '%s'.",
- type, name);
+ READER(obj)->impl = *impl;
+ READER(obj)->r_ctx = ctx_get();
+ sdb_object_ref(SDB_OBJ(READER(obj)->r_ctx));
+
+ sdb_object_ref(ud);
+ READER(obj)->r_user_data = ud;
return 0;
-} /* plugin_add_callback */
+} /* plugin_reader_init */
-/*
- * public API
- */
+static void
+plugin_reader_destroy(sdb_object_t *obj)
+{
+ assert(obj);
+ sdb_object_deref(READER(obj)->r_user_data);
+ sdb_object_deref(SDB_OBJ(READER(obj)->r_ctx));
+} /* plugin_reader_destroy */
-int
-sdb_plugin_load(const char *name, const sdb_plugin_ctx_t *plugin_ctx)
+static sdb_type_t reader_type = {
+ sizeof(reader_t),
+
+ plugin_reader_init,
+ plugin_reader_destroy
+};
+
+static int
+module_init(const char *name, lt_dlhandle lh, sdb_plugin_info_t *info)
+{
+ int (*mod_init)(sdb_plugin_info_t *);
+ int status;
+
+ mod_init = (int (*)(sdb_plugin_info_t *))lt_dlsym(lh, "sdb_module_init");
+ if (! mod_init) {
+ sdb_log(SDB_LOG_ERR, "core: Failed to load plugin '%s': "
+ "could not find symbol 'sdb_module_init'", name);
+ return -1;
+ }
+
+ status = mod_init(info);
+ if (status) {
+ sdb_log(SDB_LOG_ERR, "core: Failed to initialize "
+ "module '%s'", name);
+ plugin_unregister_by_name(name);
+ return -1;
+ }
+ return 0;
+} /* module_init */
+
+static int
+module_load(const char *basedir, const char *name,
+ const sdb_plugin_ctx_t *plugin_ctx)
{
char base_name[name ? strlen(name) + 1 : 1];
const char *name_ptr;
char *tmp;
char filename[1024];
- ctx_t *ctx;
-
lt_dlhandle lh;
- int (*mod_init)(sdb_plugin_info_t *);
+ ctx_t *ctx;
+
int status;
- if ((! name) || (! *name))
- return -1;
+ assert(name);
base_name[0] = '\0';
name_ptr = name;
}
strcat(base_name, name_ptr);
- ctx = CTX(sdb_llist_search_by_name(all_plugins, base_name));
- if (ctx) {
- /* plugin already loaded */
- ++ctx->use_cnt;
- return 0;
- }
+ if (! basedir)
+ basedir = PKGLIBDIR;
- snprintf(filename, sizeof(filename), "%s/%s.so",
- PKGLIBDIR, base_name);
+ snprintf(filename, sizeof(filename), "%s/%s.so", basedir, base_name);
filename[sizeof(filename) - 1] = '\0';
if (access(filename, R_OK)) {
if (plugin_ctx)
ctx->public = *plugin_ctx;
- mod_init = (int (*)(sdb_plugin_info_t *))lt_dlsym(lh, "sdb_module_init");
- if (! mod_init) {
- sdb_log(SDB_LOG_ERR, "core: Failed to load plugin '%s': "
- "could not find symbol 'sdb_module_init'", name);
- sdb_object_deref(SDB_OBJ(ctx));
- return -1;
- }
-
- status = mod_init(&ctx->info);
- if (status) {
- sdb_log(SDB_LOG_ERR, "core: Failed to initialize "
- "module '%s'", name);
- plugin_unregister_by_name(ctx->info.plugin_name);
+ if ((status = module_init(name, lh, &ctx->info))) {
sdb_object_deref(SDB_OBJ(ctx));
- return -1;
+ return status;
}
/* compare minor version */
name, SDB_VERSION_DECODE(ctx->info.version),
SDB_VERSION_DECODE(SDB_VERSION));
- if (! all_plugins) {
- if (! (all_plugins = sdb_llist_create())) {
- sdb_log(SDB_LOG_ERR, "core: Failed to load plugin '%s': "
- "internal error while creating linked list", name);
- plugin_unregister_by_name(ctx->info.plugin_name);
- sdb_object_deref(SDB_OBJ(ctx));
- return -1;
- }
- }
-
sdb_llist_append(all_plugins, SDB_OBJ(ctx));
sdb_log(SDB_LOG_INFO, "core: Successfully loaded "
- "plugin '%s' v%i (%s)\n\t%s\n\tLicense: %s",
- INFO_GET(&ctx->info, name), ctx->info.plugin_version,
- INFO_GET(&ctx->info, description),
+ "plugin %s v%i (%s)", ctx->info.plugin_name,
+ ctx->info.plugin_version,
+ INFO_GET(&ctx->info, description));
+ sdb_log(SDB_LOG_INFO, "core: Plugin %s: %s, License: %s",
+ ctx->info.plugin_name,
INFO_GET(&ctx->info, copyright),
INFO_GET(&ctx->info, license));
/* reset */
ctx_set(NULL);
return 0;
+} /* module_load */
+
+static char *
+plugin_get_name(const char *name, char *buf, size_t bufsize)
+{
+ ctx_t *ctx = ctx_get();
+
+ if (ctx)
+ snprintf(buf, bufsize, "%s::%s", ctx->info.plugin_name, name);
+ else
+ snprintf(buf, bufsize, "core::%s", name);
+ return buf;
+} /* plugin_get_name */
+
+static int
+plugin_add_callback(sdb_llist_t **list, const char *type,
+ const char *name, void *callback, sdb_object_t *user_data)
+{
+ sdb_object_t *obj;
+
+ if ((! name) || (! callback))
+ return -1;
+
+ assert(list);
+
+ if (! *list)
+ *list = sdb_llist_create();
+ if (! *list)
+ return -1;
+
+ obj = sdb_object_create(name, callback_type,
+ list, type, callback, user_data);
+ if (! obj)
+ return -1;
+
+ if (sdb_llist_append(*list, obj)) {
+ sdb_object_deref(obj);
+ return -1;
+ }
+
+ /* pass control to the list */
+ sdb_object_deref(obj);
+
+ sdb_log(SDB_LOG_INFO, "core: Registered %s callback '%s'.",
+ type, name);
+ return 0;
+} /* plugin_add_callback */
+
+static void
+get_backend(const char **backends, size_t *backends_num)
+{
+ const sdb_plugin_info_t *info;
+
+ info = sdb_plugin_current();
+ if ((! info) || (! info->plugin_name) || (! *info->plugin_name)) {
+ *backends_num = 0;
+ return;
+ }
+
+ backends[0] = info->plugin_name;
+ *backends_num = 1;
+} /* get_backend */
+
+/*
+ * public API
+ */
+
+int
+sdb_plugin_load(const char *basedir, const char *name,
+ const sdb_plugin_ctx_t *plugin_ctx)
+{
+ ctx_t *ctx;
+
+ int status;
+
+ if ((! name) || (! *name))
+ return -1;
+
+ if (! all_plugins) {
+ if (! (all_plugins = sdb_llist_create())) {
+ sdb_log(SDB_LOG_ERR, "core: Failed to load plugin '%s': "
+ "internal error while creating linked list", name);
+ return -1;
+ }
+ }
+
+ ctx = CTX(sdb_llist_search_by_name(all_plugins, name));
+ if (ctx) {
+ /* plugin already loaded */
+ if (! ctx->use_cnt) {
+ /* reloading plugin */
+ ctx_t *old_ctx = ctx_set(ctx);
+
+ status = module_init(ctx->info.plugin_name, ctx->handle, NULL);
+ if (status)
+ return status;
+
+ sdb_log(SDB_LOG_INFO, "core: Successfully reloaded plugin "
+ "'%s' (%s)", ctx->info.plugin_name,
+ INFO_GET(&ctx->info, description));
+ ctx_set(old_ctx);
+ }
+ ++ctx->use_cnt;
+ return 0;
+ }
+
+ return module_load(basedir, name, plugin_ctx);
} /* sdb_plugin_load */
int
va_start(ap, type);
switch (type) {
- case SDB_PLUGIN_INFO_NAME:
- {
- char *name = va_arg(ap, char *);
- if (name) {
- if (info->name)
- free(info->name);
- info->name = strdup(name);
- }
- }
- break;
case SDB_PLUGIN_INFO_DESC:
{
char *desc = va_arg(ap, char *);
} /* sdb_plugin_set_info */
int
-sdb_plugin_register_config(const char *name, sdb_plugin_config_cb callback)
+sdb_plugin_register_config(sdb_plugin_config_cb callback)
{
- return plugin_add_callback(&config_list, "init", name,
+ ctx_t *ctx = ctx_get();
+
+ if (! ctx) {
+ sdb_log(SDB_LOG_ERR, "core: Invalid attempt to register a "
+ "config callback from outside a plugin");
+ return -1;
+ }
+ return plugin_add_callback(&config_list, "config", ctx->info.plugin_name,
(void *)callback, NULL);
} /* sdb_plugin_register_config */
sdb_plugin_register_init(const char *name, sdb_plugin_init_cb callback,
sdb_object_t *user_data)
{
- return plugin_add_callback(&init_list, "init", name,
+ char cb_name[1024];
+ return plugin_add_callback(&init_list, "init",
+ plugin_get_name(name, cb_name, sizeof(cb_name)),
(void *)callback, user_data);
} /* sdb_plugin_register_init */
sdb_plugin_register_shutdown(const char *name, sdb_plugin_shutdown_cb callback,
sdb_object_t *user_data)
{
- return plugin_add_callback(&shutdown_list, "shutdown", name,
+ char cb_name[1024];
+ return plugin_add_callback(&shutdown_list, "shutdown",
+ plugin_get_name(name, cb_name, sizeof(cb_name)),
(void *)callback, user_data);
} /* sdb_plugin_register_shutdown */
sdb_plugin_register_log(const char *name, sdb_plugin_log_cb callback,
sdb_object_t *user_data)
{
- return plugin_add_callback(&log_list, "log", name, (void *)callback,
- user_data);
+ char cb_name[1024];
+ return plugin_add_callback(&log_list, "log",
+ plugin_get_name(name, cb_name, sizeof(cb_name)),
+ callback, user_data);
} /* sdb_plugin_register_log */
int
sdb_plugin_register_cname(const char *name, sdb_plugin_cname_cb callback,
sdb_object_t *user_data)
{
- return plugin_add_callback(&cname_list, "cname", name, (void *)callback,
- user_data);
+ char cb_name[1024];
+ return plugin_add_callback(&cname_list, "cname",
+ plugin_get_name(name, cb_name, sizeof(cb_name)),
+ callback, user_data);
} /* sdb_plugin_register_cname */
int
sdb_plugin_register_collector(const char *name, sdb_plugin_collector_cb callback,
const sdb_time_t *interval, sdb_object_t *user_data)
{
+ char cb_name[1024];
sdb_object_t *obj;
if ((! name) || (! callback))
@@ -669,23 +850,29 @@ sdb_plugin_register_collector(const char *name, sdb_plugin_collector_cb callback
if (! collector_list)
return -1;
- obj = sdb_object_create(name, sdb_plugin_collector_cb_type,
+ plugin_get_name(name, cb_name, sizeof(cb_name));
+
+ obj = sdb_object_create(cb_name, collector_type,
&collector_list, "collector", callback, user_data);
if (! obj)
return -1;
if (interval)
- SDB_PLUGIN_CCB(obj)->ccb_interval = *interval;
+ CCB(obj)->ccb_interval = *interval;
else {
- sdb_time_t tmp = sdb_plugin_get_ctx().interval;
+ ctx_t *ctx = ctx_get();
- if (tmp > 0)
- SDB_PLUGIN_CCB(obj)->ccb_interval = tmp;
- else
- SDB_PLUGIN_CCB(obj)->ccb_interval = 0;
+ if (! ctx) {
+ sdb_log(SDB_LOG_ERR, "core: Cannot determine interval "
+ "for collector %s; none specified and no plugin "
+ "context found", cb_name);
+ return -1;
+ }
+
+ CCB(obj)->ccb_interval = ctx->public.interval;
}
- if (! (SDB_PLUGIN_CCB(obj)->ccb_next_update = sdb_gettime())) {
+ if (! (CCB(obj)->ccb_next_update = sdb_gettime())) {
char errbuf[1024];
sdb_log(SDB_LOG_ERR, "core: Failed to determine current "
"time: %s", sdb_strerror(errno, errbuf, sizeof(errbuf)));
@@ -703,29 +890,127 @@ sdb_plugin_register_collector(const char *name, sdb_plugin_collector_cb callback
sdb_object_deref(obj);
sdb_log(SDB_LOG_INFO, "core: Registered collector callback '%s' "
- "(interval = %.3fs).", name,
- SDB_TIME_TO_DOUBLE(SDB_PLUGIN_CCB(obj)->ccb_interval));
+ "(interval = %.3fs).", cb_name,
+ SDB_TIME_TO_DOUBLE(CCB(obj)->ccb_interval));
return 0;
} /* sdb_plugin_register_collector */
-sdb_plugin_ctx_t
-sdb_plugin_get_ctx(void)
+int
+sdb_plugin_register_ts_fetcher(const char *name,
+ sdb_plugin_fetch_ts_cb callback, sdb_object_t *user_data)
{
- ctx_t *c;
-
- c = ctx_get();
- if (! c) {
- sdb_plugin_log(SDB_LOG_ERR, "core: Invalid read access to plugin "
- "context outside a plugin");
- return plugin_default_ctx;
- }
- return c->public;
-} /* sdb_plugin_get_ctx */
+ return plugin_add_callback(&ts_fetcher_list, "time-series fetcher",
+ name, callback, user_data);
+} /* sdb_plugin_register_ts_fetcher */
int
-sdb_plugin_set_ctx(sdb_plugin_ctx_t ctx, sdb_plugin_ctx_t *old)
+sdb_plugin_register_writer(const char *name,
+ sdb_store_writer_t *writer, sdb_object_t *user_data)
{
- ctx_t *c;
+ char cb_name[1024];
+ sdb_object_t *obj;
+
+ if ((! name) || (! writer))
+ return -1;
+
+ if (! writer_list)
+ writer_list = sdb_llist_create();
+ if (! writer_list)
+ return -1;
+
+ plugin_get_name(name, cb_name, sizeof(cb_name));
+
+ obj = sdb_object_create(cb_name, writer_type,
+ writer, user_data);
+ if (! obj)
+ return -1;
+
+ if (sdb_llist_append(writer_list, obj)) {
+ sdb_object_deref(obj);
+ return -1;
+ }
+
+ /* pass control to the list */
+ sdb_object_deref(obj);
+
+ sdb_log(SDB_LOG_INFO, "core: Registered store writer callback '%s'.",
+ cb_name);
+ return 0;
+} /* sdb_store_register_writer */
+
+int
+sdb_plugin_register_reader(const char *name,
+ sdb_store_reader_t *reader, sdb_object_t *user_data)
+{
+ char cb_name[1024];
+ sdb_object_t *obj;
+
+ if ((! name) || (! reader))
+ return -1;
+
+ if (! reader_list)
+ reader_list = sdb_llist_create();
+ if (! reader_list)
+ return -1;
+
+ plugin_get_name(name, cb_name, sizeof(cb_name));
+
+ obj = sdb_object_create(cb_name, reader_type,
+ reader, user_data);
+ if (! obj)
+ return -1;
+
+ if (sdb_llist_append(reader_list, obj)) {
+ sdb_object_deref(obj);
+ return -1;
+ }
+
+ /* pass control to the list */
+ sdb_object_deref(obj);
+
+ sdb_log(SDB_LOG_INFO, "core: Registered store reader callback '%s'.",
+ cb_name);
+ return 0;
+} /* sdb_plugin_register_reader */
+
+void
+sdb_plugin_unregister_all(void)
+{
+ size_t i;
+
+ for (i = 0; i < SDB_STATIC_ARRAY_LEN(all_lists); ++i) {
+ const char *type = all_lists[i].type;
+ sdb_llist_t *list = *all_lists[i].list;
+
+ size_t len = sdb_llist_len(list);
+
+ if (! len)
+ continue;
+
+ sdb_llist_clear(list);
+ sdb_log(SDB_LOG_INFO, "core: Unregistered %zu %s callback%s",
+ len, type, len == 1 ? "" : "s");
+ }
+} /* sdb_plugin_unregister_all */
+
+sdb_plugin_ctx_t
+sdb_plugin_get_ctx(void)
+{
+ ctx_t *c;
+
+ c = ctx_get();
+ if (! c) {
+ sdb_plugin_log(SDB_LOG_ERR, "core: Invalid read access to plugin "
+ "context outside a plugin");
+ return plugin_default_ctx;
+ }
+ return c->public;
+} /* sdb_plugin_get_ctx */
+
+int
+sdb_plugin_set_ctx(sdb_plugin_ctx_t ctx, sdb_plugin_ctx_t *old)
+{
+ ctx_t *c;
c = ctx_get();
if (! c) {
return 0;
} /* sdb_plugin_set_ctx */
+const sdb_plugin_info_t *
+sdb_plugin_current(void)
+{
+ ctx_t *ctx = ctx_get();
+
+ if (! ctx)
+ return NULL;
+ return &ctx->info;
+} /* sdb_plugin_current */
+
int
sdb_plugin_configure(const char *name, oconfig_item_t *ci)
{
- sdb_plugin_cb_t *plugin;
+ callback_t *plugin;
sdb_plugin_config_cb callback;
ctx_t *old_ctx;
if ((! name) || (! ci))
return -1;
- plugin = SDB_PLUGIN_CB(sdb_llist_search_by_name(config_list, name));
+ plugin = CB(sdb_llist_search_by_name(config_list, name));
if (! plugin) {
ctx_t *ctx = CTX(sdb_llist_search_by_name(all_plugins, name));
if (! ctx)
- sdb_log(SDB_LOG_ERR, "core: Plugin '%s' not loaded.", name);
+ sdb_log(SDB_LOG_ERR, "core: Cannot configure unknown "
+ "plugin '%s'. Missing 'LoadPlugin \"%s\"'?",
+ name, name);
else
sdb_log(SDB_LOG_ERR, "core: Plugin '%s' did not register "
"a config callback.", name);
return status;
} /* sdb_plugin_configure */
+int
+sdb_plugin_reconfigure_init(void)
+{
+ sdb_llist_iter_t *iter;
+
+ iter = sdb_llist_get_iter(config_list);
+ if (config_list && (! iter))
+ return -1;
+
+ /* deconfigure all plugins */
+ while (sdb_llist_iter_has_next(iter)) {
+ callback_t *plugin;
+ sdb_plugin_config_cb callback;
+ ctx_t *old_ctx;
+
+ plugin = CB(sdb_llist_iter_get_next(iter));
+ old_ctx = ctx_set(plugin->cb_ctx);
+ callback = (sdb_plugin_config_cb)plugin->cb_callback;
+ callback(NULL);
+ ctx_set(old_ctx);
+ }
+ sdb_llist_iter_destroy(iter);
+
+ iter = sdb_llist_get_iter(all_plugins);
+ if (all_plugins && (! iter))
+ return -1;
+
+ /* record all plugins as being unused */
+ while (sdb_llist_iter_has_next(iter))
+ CTX(sdb_llist_iter_get_next(iter))->use_cnt = 0;
+ sdb_llist_iter_destroy(iter);
+
+ sdb_plugin_unregister_all();
+ return 0;
+} /* sdb_plugin_reconfigure_init */
+
+int
+sdb_plugin_reconfigure_finish(void)
+{
+ sdb_llist_iter_t *iter;
+
+ iter = sdb_llist_get_iter(all_plugins);
+ if (all_plugins && (! iter))
+ return -1;
+
+ while (sdb_llist_iter_has_next(iter)) {
+ ctx_t *ctx = CTX(sdb_llist_iter_get_next(iter));
+ if (ctx->use_cnt)
+ continue;
+
+ sdb_log(SDB_LOG_INFO, "core: Module %s no longer in use",
+ ctx->info.plugin_name);
+ sdb_llist_iter_remove_current(iter);
+ plugin_unregister_by_name(ctx->info.plugin_name);
+ sdb_object_deref(SDB_OBJ(ctx));
+ }
+ sdb_llist_iter_destroy(iter);
+ return 0;
+} /* sdb_plugin_reconfigure_finish */
+
int
sdb_plugin_init_all(void)
{
iter = sdb_llist_get_iter(init_list);
while (sdb_llist_iter_has_next(iter)) {
- sdb_plugin_cb_t *cb;
+ callback_t *cb;
sdb_plugin_init_cb callback;
ctx_t *old_ctx;
sdb_object_t *obj = sdb_llist_iter_get_next(iter);
assert(obj);
- cb = SDB_PLUGIN_CB(obj);
+ cb = CB(obj);
callback = (sdb_plugin_init_cb)cb->cb_callback;
if (callback(cb->cb_user_data)) {
sdb_log(SDB_LOG_ERR, "core: Failed to initialize plugin "
"'%s'. Unregistering all callbacks.", obj->name);
+ ctx_set(old_ctx);
plugin_unregister_by_name(cb->cb_ctx->info.plugin_name);
++ret;
}
- ctx_set(old_ctx);
+ else
+ ctx_set(old_ctx);
}
sdb_llist_iter_destroy(iter);
return ret;
} /* sdb_plugin_init_all */
+int
+sdb_plugin_shutdown_all(void)
+{
+ sdb_llist_iter_t *iter;
+ int ret = 0;
+
+ iter = sdb_llist_get_iter(shutdown_list);
+ while (sdb_llist_iter_has_next(iter)) {
+ callback_t *cb;
+ sdb_plugin_shutdown_cb callback;
+ ctx_t *old_ctx;
+
+ sdb_object_t *obj = sdb_llist_iter_get_next(iter);
+ assert(obj);
+ cb = CB(obj);
+
+ callback = (sdb_plugin_shutdown_cb)cb->cb_callback;
+
+ old_ctx = ctx_set(cb->cb_ctx);
+ if (callback(cb->cb_user_data)) {
+ sdb_log(SDB_LOG_ERR, "core: Failed to shutdown plugin '%s'.",
+ obj->name);
+ ++ret;
+ }
+ ctx_set(old_ctx);
+ }
+ sdb_llist_iter_destroy(iter);
+ return ret;
+} /* sdb_plugin_shutdown_all */
+
int
sdb_plugin_collector_loop(sdb_plugin_loop_t *loop)
{
if (! obj)
return -1;
- callback = (sdb_plugin_collector_cb)SDB_PLUGIN_CCB(obj)->ccb_callback;
+ callback = (sdb_plugin_collector_cb)CCB(obj)->ccb_callback;
if (! (now = sdb_gettime())) {
char errbuf[1024];
sdb_log(SDB_LOG_ERR, "core: Failed to determine current "
"time in collector main loop: %s",
sdb_strerror(errno, errbuf, sizeof(errbuf)));
- now = SDB_PLUGIN_CCB(obj)->ccb_next_update;
+ now = CCB(obj)->ccb_next_update;
}
- if (now < SDB_PLUGIN_CCB(obj)->ccb_next_update) {
- interval = SDB_PLUGIN_CCB(obj)->ccb_next_update - now;
+ if (now < CCB(obj)->ccb_next_update) {
+ interval = CCB(obj)->ccb_next_update - now;
errno = 0;
while (loop->do_loop && sdb_sleep(interval, &interval)) {
sdb_log(SDB_LOG_ERR, "core: Failed to sleep "
"in collector main loop: %s",
sdb_strerror(errno, errbuf, sizeof(errbuf)));
+ sdb_llist_insert_sorted(collector_list, obj,
+ plugin_cmp_next_update);
+ sdb_object_deref(obj);
return -1;
}
errno = 0;
}
- if (! loop->do_loop)
+ if (! loop->do_loop) {
+ /* put back; don't worry about errors */
+ sdb_llist_insert_sorted(collector_list, obj,
+ plugin_cmp_next_update);
+ sdb_object_deref(obj);
return 0;
+ }
}
- old_ctx = ctx_set(SDB_PLUGIN_CCB(obj)->ccb_ctx);
- if (callback(SDB_PLUGIN_CCB(obj)->ccb_user_data)) {
+ old_ctx = ctx_set(CCB(obj)->ccb_ctx);
+ if (callback(CCB(obj)->ccb_user_data)) {
/* XXX */
}
ctx_set(old_ctx);
- interval = SDB_PLUGIN_CCB(obj)->ccb_interval;
+ interval = CCB(obj)->ccb_interval;
if (! interval)
interval = loop->default_interval;
if (! interval) {
continue;
}
- SDB_PLUGIN_CCB(obj)->ccb_next_update += interval;
+ CCB(obj)->ccb_next_update += interval;
if (! (now = sdb_gettime())) {
char errbuf[1024];
sdb_log(SDB_LOG_ERR, "core: Failed to determine current "
"time in collector main loop: %s",
sdb_strerror(errno, errbuf, sizeof(errbuf)));
- now = SDB_PLUGIN_CCB(obj)->ccb_next_update;
+ now = CCB(obj)->ccb_next_update;
}
- if (now > SDB_PLUGIN_CCB(obj)->ccb_next_update) {
+ if (now > CCB(obj)->ccb_next_update) {
sdb_log(SDB_LOG_WARNING, "core: Plugin '%s' took too "
"long; skipping iterations to keep up.",
obj->name);
- SDB_PLUGIN_CCB(obj)->ccb_next_update = now;
+ CCB(obj)->ccb_next_update = now;
}
if (sdb_llist_insert_sorted(collector_list, obj,
sdb_object_t *obj = sdb_llist_iter_get_next(iter);
assert(obj);
- callback = (sdb_plugin_cname_cb)SDB_PLUGIN_CB(obj)->cb_callback;
- cname = callback(hostname, SDB_PLUGIN_CB(obj)->cb_user_data);
+ callback = (sdb_plugin_cname_cb)CB(obj)->cb_callback;
+ cname = callback(hostname, CB(obj)->cb_user_data);
if (cname) {
free(hostname);
hostname = cname;
sdb_llist_iter_t *iter;
int ret = -1;
+ bool logged = 0;
+
if (! msg)
return 0;
- if (! log_list)
- return fprintf(stderr, "[%s] %s\n", SDB_LOG_PRIO_TO_STRING(prio), msg);
-
iter = sdb_llist_get_iter(log_list);
while (sdb_llist_iter_has_next(iter)) {
sdb_plugin_log_cb callback;
sdb_object_t *obj = sdb_llist_iter_get_next(iter);
assert(obj);
- callback = (sdb_plugin_log_cb)SDB_PLUGIN_CB(obj)->cb_callback;
- tmp = callback(prio, msg, SDB_PLUGIN_CB(obj)->cb_user_data);
+ callback = (sdb_plugin_log_cb)CB(obj)->cb_callback;
+ tmp = callback(prio, msg, CB(obj)->cb_user_data);
if (tmp > ret)
ret = tmp;
+
+ if (CB(obj)->cb_ctx)
+ logged = 1;
+ /* else: this is an internally registered callback */
}
sdb_llist_iter_destroy(iter);
+
+ if (! logged)
+ return fprintf(stderr, "[%s] %s\n", SDB_LOG_PRIO_TO_STRING(prio), msg);
return ret;
} /* sdb_plugin_log */
return ret;
} /* sdb_plugin_logf */
+sdb_timeseries_t *
+sdb_plugin_fetch_timeseries(const char *type, const char *id,
+ sdb_timeseries_opts_t *opts)
+{
+ callback_t *plugin;
+ sdb_plugin_fetch_ts_cb callback;
+ sdb_timeseries_t *ts;
+
+ ctx_t *old_ctx;
+
+ if ((! type) || (! id) || (! opts))
+ return NULL;
+
+ plugin = CB(sdb_llist_search_by_name(ts_fetcher_list, type));
+ if (! plugin) {
+ sdb_log(SDB_LOG_ERR, "core: Cannot fetch time-series of type %s: "
+ "no such plugin loaded", type);
+ errno = ENOENT;
+ return NULL;
+ }
+
+ old_ctx = ctx_set(plugin->cb_ctx);
+ callback = (sdb_plugin_fetch_ts_cb)plugin->cb_callback;
+ ts = callback(id, opts, plugin->cb_user_data);
+ ctx_set(old_ctx);
+ return ts;
+} /* sdb_plugin_fetch_timeseries */
+
+int
+sdb_plugin_query(sdb_ast_node_t *ast, sdb_strbuf_t *buf, sdb_strbuf_t *errbuf)
+{
+ size_t n = sdb_llist_len(reader_list);
+ reader_t *reader;
+ sdb_object_t *q;
+ int status = 0;
+
+ if (! ast)
+ return 0;
+
+ if ((ast->type != SDB_AST_TYPE_FETCH)
+ && (ast->type != SDB_AST_TYPE_LIST)
+ && (ast->type != SDB_AST_TYPE_LOOKUP)
+ && (ast->type != SDB_AST_TYPE_TIMESERIES)) {
+ sdb_log(SDB_LOG_ERR, "core: Cannot execute query of type %s",
+ SDB_AST_TYPE_TO_STRING(ast));
+ sdb_strbuf_sprintf(errbuf, "Cannot execute query of type %s",
+ SDB_AST_TYPE_TO_STRING(ast));
+ return -1;
+ }
+
+ if (n != 1) {
+ char *msg = (n > 0)
+ ? "Cannot execute query: multiple readers not supported"
+ : "Cannot execute query: no readers registered";
+ sdb_strbuf_sprintf(errbuf, "%s", msg);
+ sdb_log(SDB_LOG_ERR, "core: %s", msg);
+ return -1;
+ }
+
+ reader = READER(sdb_llist_get(reader_list, 0));
+ assert(reader);
+
+ q = reader->impl.prepare_query(ast, errbuf, reader->r_user_data);
+ if (q)
+ status = reader->impl.execute_query(q, buf, errbuf, reader->r_user_data);
+ else
+ status = -1;
+
+ sdb_object_deref(SDB_OBJ(q));
+ sdb_object_deref(SDB_OBJ(reader));
+ return status;
+} /* sdb_plugin_query */
+
+int
+sdb_plugin_store_host(const char *name, sdb_time_t last_update)
+{
+ sdb_store_host_t host = { 0 };
+ const char *backends[1];
+ char *cname;
+
+ sdb_llist_iter_t *iter;
+ int status = 0;
+
+ if (! name)
+ return -1;
+
+ if (! sdb_llist_len(writer_list)) {
+ sdb_log(SDB_LOG_ERR, "core: Cannot store host: "
+ "no writers registered");
+ return -1;
+ }
+
+ cname = sdb_plugin_cname(strdup(name));
+ if (! cname) {
+ sdb_log(SDB_LOG_ERR, "core: strdup failed");
+ return -1;
+ }
+
+ host.name = cname;
+ host.last_update = last_update;
+ host.backends = backends;
+ get_backend(host.backends, &host.backends_num);
+
+ iter = sdb_llist_get_iter(writer_list);
+ while (sdb_llist_iter_has_next(iter)) {
+ writer_t *writer = WRITER(sdb_llist_iter_get_next(iter));
+ int s;
+ assert(writer);
+ s = writer->impl.store_host(&host, writer->w_user_data);
+ if (((s > 0) && (status >= 0)) || (s < 0))
+ status = s;
+ }
+ sdb_llist_iter_destroy(iter);
+ free(cname);
+ return status;
+} /* sdb_plugin_store_host */
+
+int
+sdb_plugin_store_service(const char *hostname, const char *name,
+ sdb_time_t last_update)
+{
+ sdb_store_service_t service = { 0 };
+ const char *backends[1];
+ char *cname;
+
+ sdb_llist_iter_t *iter;
+ sdb_data_t d;
+
+ int status = 0;
+
+ if ((! hostname) || (! name))
+ return -1;
+
+ if (! sdb_llist_len(writer_list)) {
+ sdb_log(SDB_LOG_ERR, "core: Cannot store service: "
+ "no writers registered");
+ return -1;
+ }
+
+ cname = sdb_plugin_cname(strdup(hostname));
+ if (! cname) {
+ sdb_log(SDB_LOG_ERR, "core: strdup failed");
+ return -1;
+ }
+
+ service.hostname = cname;
+ service.name = name;
+ service.last_update = last_update;
+ service.backends = backends;
+ get_backend(service.backends, &service.backends_num);
+
+ iter = sdb_llist_get_iter(writer_list);
+ while (sdb_llist_iter_has_next(iter)) {
+ writer_t *writer = WRITER(sdb_llist_iter_get_next(iter));
+ int s;
+ assert(writer);
+ s = writer->impl.store_service(&service, writer->w_user_data);
+ if (((s > 0) && (status >= 0)) || (s < 0))
+ status = s;
+ }
+ sdb_llist_iter_destroy(iter);
+
+ if (! status) {
+ /* record the hostname as an attribute */
+ d.type = SDB_TYPE_STRING;
+ d.data.string = cname;
+ if (sdb_plugin_store_service_attribute(cname, name,
+ "hostname", &d, last_update))
+ status = -1;
+ }
+
+ free(cname);
+ return status;
+} /* sdb_plugin_store_service */
+
+int
+sdb_plugin_store_metric(const char *hostname, const char *name,
+ sdb_metric_store_t *store, sdb_time_t last_update)
+{
+ sdb_store_metric_t metric = { 0 };
+ const char *backends[1];
+ char *cname;
+
+ sdb_llist_iter_t *iter;
+ sdb_data_t d;
+
+ int status = 0;
+
+ if ((! hostname) || (! name))
+ return -1;
+
+ if (! sdb_llist_len(writer_list)) {
+ sdb_log(SDB_LOG_ERR, "core: Cannot store metric: "
+ "no writers registered");
+ return -1;
+ }
+
+ cname = sdb_plugin_cname(strdup(hostname));
+ if (! cname) {
+ sdb_log(SDB_LOG_ERR, "core: strdup failed");
+ return -1;
+ }
+
+ if (store && ((! store->type) || (! store->id)))
+ store = NULL;
+
+ metric.hostname = cname;
+ metric.name = name;
+ if (store) {
+ metric.store.type = store->type;
+ metric.store.id = store->id;
+ }
+ metric.last_update = last_update;
+ metric.backends = backends;
+ get_backend(metric.backends, &metric.backends_num);
+
+ iter = sdb_llist_get_iter(writer_list);
+ while (sdb_llist_iter_has_next(iter)) {
+ writer_t *writer = WRITER(sdb_llist_iter_get_next(iter));
+ int s;
+ assert(writer);
+ s = writer->impl.store_metric(&metric, writer->w_user_data);
+ if (((s > 0) && (status >= 0)) || (s < 0))
+ status = s;
+ }
+ sdb_llist_iter_destroy(iter);
+
+ if (! status) {
+ /* record the hostname as an attribute */
+ d.type = SDB_TYPE_STRING;
+ d.data.string = cname;
+ if (sdb_plugin_store_metric_attribute(cname, name,
+ "hostname", &d, last_update))
+ status = -1;
+ }
+
+ free(cname);
+ return status;
+} /* sdb_plugin_store_metric */
+
+int
+sdb_plugin_store_attribute(const char *hostname, const char *key,
+ const sdb_data_t *value, sdb_time_t last_update)
+{
+ sdb_store_attribute_t attr = { 0 };
+ const char *backends[1];
+ char *cname;
+
+ sdb_llist_iter_t *iter;
+ int status = 0;
+
+ if ((! hostname) || (! key) || (! value))
+ return -1;
+
+ if (! sdb_llist_len(writer_list)) {
+ sdb_log(SDB_LOG_ERR, "core: Cannot store attribute: "
+ "no writers registered");
+ return -1;
+ }
+
+ cname = sdb_plugin_cname(strdup(hostname));
+ if (! cname) {
+ sdb_log(SDB_LOG_ERR, "core: strdup failed");
+ return -1;
+ }
+
+ attr.parent_type = SDB_HOST;
+ attr.parent = cname;
+ attr.key = key;
+ attr.value = *value;
+ attr.last_update = last_update;
+ attr.backends = backends;
+ get_backend(attr.backends, &attr.backends_num);
+
+ iter = sdb_llist_get_iter(writer_list);
+ while (sdb_llist_iter_has_next(iter)) {
+ writer_t *writer = WRITER(sdb_llist_iter_get_next(iter));
+ int s;
+ assert(writer);
+ s = writer->impl.store_attribute(&attr, writer->w_user_data);
+ if (((s > 0) && (status >= 0)) || (s < 0))
+ status = s;
+ }
+ sdb_llist_iter_destroy(iter);
+ free(cname);
+ return status;
+} /* sdb_plugin_store_attribute */
+
+int
+sdb_plugin_store_service_attribute(const char *hostname, const char *service,
+ const char *key, const sdb_data_t *value, sdb_time_t last_update)
+{
+ sdb_store_attribute_t attr = { 0 };
+ const char *backends[1];
+ char *cname;
+
+ sdb_llist_iter_t *iter;
+ int status = 0;
+
+ if ((! hostname) || (! service) || (! key) || (! value))
+ return -1;
+
+ if (! sdb_llist_len(writer_list)) {
+ sdb_log(SDB_LOG_ERR, "core: Cannot store service attribute: "
+ "no writers registered");
+ return -1;
+ }
+
+ cname = sdb_plugin_cname(strdup(hostname));
+ if (! cname) {
+ sdb_log(SDB_LOG_ERR, "core: strdup failed");
+ return -1;
+ }
+
+ attr.hostname = cname;
+ attr.parent_type = SDB_SERVICE;
+ attr.parent = service;
+ attr.key = key;
+ attr.value = *value;
+ attr.last_update = last_update;
+ attr.backends = backends;
+ get_backend(attr.backends, &attr.backends_num);
+
+ iter = sdb_llist_get_iter(writer_list);
+ while (sdb_llist_iter_has_next(iter)) {
+ writer_t *writer = WRITER(sdb_llist_iter_get_next(iter));
+ int s;
+ assert(writer);
+ s = writer->impl.store_attribute(&attr, writer->w_user_data);
+ if (((s > 0) && (status >= 0)) || (s < 0))
+ status = s;
+ }
+ sdb_llist_iter_destroy(iter);
+ free(cname);
+ return status;
+} /* sdb_plugin_store_service_attribute */
+
+int
+sdb_plugin_store_metric_attribute(const char *hostname, const char *metric,
+ const char *key, const sdb_data_t *value, sdb_time_t last_update)
+{
+ sdb_store_attribute_t attr = { 0 };
+ const char *backends[1];
+ char *cname;
+
+ sdb_llist_iter_t *iter;
+ int status = 0;
+
+ if ((! hostname) || (! metric) || (! key) || (! value))
+ return -1;
+
+ if (! sdb_llist_len(writer_list)) {
+ sdb_log(SDB_LOG_ERR, "core: Cannot store metric attribute: "
+ "no writers registered");
+ return -1;
+ }
+
+ cname = sdb_plugin_cname(strdup(hostname));
+ if (! cname) {
+ sdb_log(SDB_LOG_ERR, "core: strdup failed");
+ return -1;
+ }
+
+ attr.hostname = cname;
+ attr.parent_type = SDB_METRIC;
+ attr.parent = metric;
+ attr.key = key;
+ attr.value = *value;
+ attr.last_update = last_update;
+ attr.backends = backends;
+ get_backend(attr.backends, &attr.backends_num);
+
+ iter = sdb_llist_get_iter(writer_list);
+ while (sdb_llist_iter_has_next(iter)) {
+ writer_t *writer = WRITER(sdb_llist_iter_get_next(iter));
+ int s;
+ assert(writer);
+ s = writer->impl.store_attribute(&attr, writer->w_user_data);
+ if (((s > 0) && (status >= 0)) || (s < 0))
+ status = s;
+ }
+ sdb_llist_iter_destroy(iter);
+ free(cname);
+ return status;
+} /* sdb_plugin_store_metric_attribute */
+
/* vim: set tw=78 sw=4 ts=4 noexpandtab : */