X-Git-Url: https://git.tokkee.org/?p=sysdb.git;a=blobdiff_plain;f=src%2Fcore%2Fplugin.c;h=0bf785d571a29b57ac9ecba7d9f34dd1dc6d6b5a;hp=6b1560336b311a659c35566333d78a147d8d39c2;hb=bb7b99fec92dc9ea1c7ce70e050f4d97fec47ded;hpb=502bbcd0731ca35b4f3d93653a818f5246f81e0b

diff --git a/src/core/plugin.c b/src/core/plugin.c
index 6b15603..0bf785d 100644
--- a/src/core/plugin.c
+++ b/src/core/plugin.c
@@ -406,8 +406,7 @@ plugin_writer_init(sdb_object_t *obj, va_list ap)
 	assert(impl);
 
 	if ((! impl->store_host) || (! impl->store_service)
-			|| (! impl->store_metric) || (! impl->store_attribute)
-			|| (! impl->store_service_attr) || (! impl->store_metric_attr)) {
+			|| (! 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);
@@ -662,6 +661,126 @@ plugin_add_callback(sdb_llist_t **list, const char *type,
 	return 0;
 } /* plugin_add_callback */
 
+/*
+ * object meta-data
+ */
+
+typedef struct {
+	int obj_type;
+	sdb_time_t last_update;
+	sdb_time_t interval;
+} interval_fetcher_t;
+
+static int
+interval_fetcher_host(sdb_store_host_t *host, sdb_object_t *user_data)
+{
+	interval_fetcher_t *lu = SDB_OBJ_WRAPPER(user_data)->data;
+	lu->obj_type = SDB_HOST;
+	lu->last_update = host->last_update;
+	return 0;
+} /* interval_fetcher_host */
+
+static int
+interval_fetcher_service(sdb_store_service_t *svc, sdb_object_t *user_data)
+{
+	interval_fetcher_t *lu = SDB_OBJ_WRAPPER(user_data)->data;
+	lu->obj_type = SDB_SERVICE;
+	lu->last_update = svc->last_update;
+	return 0;
+} /* interval_fetcher_service */
+
+static int
+interval_fetcher_metric(sdb_store_metric_t *metric, sdb_object_t *user_data)
+{
+	interval_fetcher_t *lu = SDB_OBJ_WRAPPER(user_data)->data;
+	lu->obj_type = SDB_METRIC;
+	lu->last_update = metric->last_update;
+	return 0;
+} /* interval_fetcher_metric */
+
+static int
+interval_fetcher_attr(sdb_store_attribute_t *attr, sdb_object_t *user_data)
+{
+	interval_fetcher_t *lu = SDB_OBJ_WRAPPER(user_data)->data;
+	lu->obj_type = SDB_ATTRIBUTE;
+	lu->last_update = attr->last_update;
+	return 0;
+} /* interval_fetcher_attr */
+
+static sdb_store_writer_t interval_fetcher = {
+	interval_fetcher_host, interval_fetcher_service,
+	interval_fetcher_metric, interval_fetcher_attr,
+};
+
+static int
+get_interval(int obj_type, const char *hostname,
+		int parent_type, const char *parent, const char *name,
+		sdb_time_t last_update, sdb_time_t *interval_out)
+{
+	sdb_ast_fetch_t fetch = SDB_AST_FETCH_INIT;
+	char hn[hostname ? strlen(hostname) + 1 : 1];
+	char pn[parent ? strlen(parent) + 1 : 1];
+	char n[strlen(name) + 1];
+	int status;
+
+	interval_fetcher_t lu = { 0, 0, 0 };
+	sdb_object_wrapper_t obj = SDB_OBJECT_WRAPPER_STATIC(&lu);
+	sdb_time_t interval;
+
+	assert(name);
+
+	if (hostname)
+		strncpy(hn, hostname, sizeof(hn));
+	if (parent)
+		strncpy(pn, parent, sizeof(pn));
+	strncpy(n, name, sizeof(n));
+
+	fetch.obj_type = obj_type;
+	fetch.hostname = hostname ? hn : NULL;
+	fetch.parent_type = parent_type;
+	fetch.parent = parent ? pn : NULL;
+	fetch.name = n;
+
+	status = sdb_plugin_query(SDB_AST_NODE(&fetch),
+			&interval_fetcher, SDB_OBJ(&obj), NULL);
+	if ((status < 0) || (lu.obj_type != obj_type) || (lu.last_update == 0)) {
+		*interval_out = 0;
+		return 0;
+	}
+
+	if (lu.last_update >= last_update) {
+		if (lu.last_update > last_update)
+			sdb_log(SDB_LOG_DEBUG, "memstore: Cannot update %s '%s' - "
+					"value too old (%"PRIsdbTIME" < %"PRIsdbTIME")",
+					SDB_STORE_TYPE_TO_NAME(obj_type), name,
+					lu.last_update, last_update);
+		*interval_out = lu.interval;
+		return 1;
+	}
+
+	interval = last_update - lu.last_update;
+	if (lu.interval && interval)
+		interval = (sdb_time_t)((0.9 * (double)lu.interval)
+				+ (0.1 * (double)interval));
+	*interval_out = interval;
+	return 0;
+} /* get_interval */
+
+static void
+get_backend(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
  */
@@ -1423,7 +1542,8 @@ sdb_plugin_fetch_timeseries(const char *type, const char *id,
 } /* sdb_plugin_fetch_timeseries */
 
 int
-sdb_plugin_query(sdb_ast_node_t *ast, sdb_strbuf_t *buf, sdb_strbuf_t *errbuf)
+sdb_plugin_query(sdb_ast_node_t *ast,
+		sdb_store_writer_t *w, sdb_object_t *wd, sdb_strbuf_t *errbuf)
 {
 	size_t n = sdb_llist_len(reader_list);
 	reader_t *reader;
@@ -1433,6 +1553,16 @@ sdb_plugin_query(sdb_ast_node_t *ast, sdb_strbuf_t *buf, sdb_strbuf_t *errbuf)
 	if (! ast)
 		return 0;
 
+	if ((ast->type != SDB_AST_TYPE_FETCH)
+			&& (ast->type != SDB_AST_TYPE_LIST)
+			&& (ast->type != SDB_AST_TYPE_LOOKUP)) {
+		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"
@@ -1447,7 +1577,8 @@ sdb_plugin_query(sdb_ast_node_t *ast, sdb_strbuf_t *buf, sdb_strbuf_t *errbuf)
 
 	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);
+		status = reader->impl.execute_query(q, w, SDB_OBJ(wd),
+				errbuf, reader->r_user_data);
 	else
 		status = -1;
 
@@ -1459,6 +1590,8 @@ sdb_plugin_query(sdb_ast_node_t *ast, sdb_strbuf_t *buf, sdb_strbuf_t *errbuf)
 int
 sdb_plugin_store_host(const char *name, sdb_time_t last_update)
 {
+	sdb_store_host_t host = SDB_STORE_HOST_INIT;
+	char *backends[1];
 	char *cname;
 
 	sdb_llist_iter_t *iter;
@@ -1479,12 +1612,22 @@ sdb_plugin_store_host(const char *name, sdb_time_t last_update)
 		return -1;
 	}
 
+	host.name = cname;
+	host.last_update = last_update ? last_update : sdb_gettime();
+	if (get_interval(SDB_HOST, NULL, -1, NULL, cname,
+				host.last_update, &host.interval)) {
+		free(cname);
+		return 1;
+	}
+	host.backends = (const char * const *)backends;
+	get_backend(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(cname, last_update, writer->w_user_data);
+		s = writer->impl.store_host(&host, writer->w_user_data);
 		if (((s > 0) && (status >= 0)) || (s < 0))
 			status = s;
 	}
@@ -1497,9 +1640,13 @@ int
 sdb_plugin_store_service(const char *hostname, const char *name,
 		sdb_time_t last_update)
 {
+	sdb_store_service_t service = SDB_STORE_SERVICE_INIT;
+	char *backends[1];
 	char *cname;
 
 	sdb_llist_iter_t *iter;
+	sdb_data_t d;
+
 	int status = 0;
 
 	if ((! hostname) || (! name))
@@ -1517,17 +1664,37 @@ sdb_plugin_store_service(const char *hostname, const char *name,
 		return -1;
 	}
 
+	service.hostname = cname;
+	service.name = name;
+	service.last_update = last_update ? last_update : sdb_gettime();
+	if (get_interval(SDB_SERVICE, cname, -1, NULL, name,
+				service.last_update, &service.interval)) {
+		free(cname);
+		return 1;
+	}
+	service.backends = (const char * const *)backends;
+	get_backend(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(cname, name, last_update,
-				writer->w_user_data);
+		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, service.last_update))
+			status = -1;
+	}
+
 	free(cname);
 	return status;
 } /* sdb_plugin_store_service */
@@ -1536,9 +1703,13 @@ 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 = SDB_STORE_METRIC_INIT;
+	char *backends[1];
 	char *cname;
 
 	sdb_llist_iter_t *iter;
+	sdb_data_t d;
+
 	int status = 0;
 
 	if ((! hostname) || (! name))
@@ -1559,17 +1730,43 @@ sdb_plugin_store_metric(const char *hostname, const char *name,
 	if (store && ((! store->type) || (! store->id)))
 		store = NULL;
 
+	metric.hostname = cname;
+	metric.name = name;
+	if (store) {
+		if (store->last_update < last_update)
+			store->last_update = last_update;
+		metric.stores = store;
+		metric.stores_num = 1;
+	}
+	metric.last_update = last_update ? last_update : sdb_gettime();
+	if (get_interval(SDB_METRIC, cname, -1, NULL, name,
+				metric.last_update, &metric.interval)) {
+		free(cname);
+		return 1;
+	}
+	metric.backends = (const char * const *)backends;
+	get_backend(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(cname, name, store, last_update,
-				writer->w_user_data);
+		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, metric.last_update))
+			status = -1;
+	}
+
 	free(cname);
 	return status;
 } /* sdb_plugin_store_metric */
@@ -1578,6 +1775,8 @@ 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 = SDB_STORE_ATTRIBUTE_INIT;
+	char *backends[1];
 	char *cname;
 
 	sdb_llist_iter_t *iter;
@@ -1598,13 +1797,25 @@ sdb_plugin_store_attribute(const char *hostname, const char *key,
 		return -1;
 	}
 
+	attr.parent_type = SDB_HOST;
+	attr.parent = cname;
+	attr.key = key;
+	attr.value = *value;
+	attr.last_update = last_update ? last_update : sdb_gettime();
+	if (get_interval(SDB_ATTRIBUTE, cname, -1, NULL, key,
+				attr.last_update, &attr.interval)) {
+		free(cname);
+		return 1;
+	}
+	attr.backends = (const char * const *)backends;
+	get_backend(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(cname, key, value, last_update,
-				writer->w_user_data);
+		s = writer->impl.store_attribute(&attr, writer->w_user_data);
 		if (((s > 0) && (status >= 0)) || (s < 0))
 			status = s;
 	}
@@ -1617,6 +1828,8 @@ 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 = SDB_STORE_ATTRIBUTE_INIT;
+	char *backends[1];
 	char *cname;
 
 	sdb_llist_iter_t *iter;
@@ -1637,13 +1850,26 @@ sdb_plugin_store_service_attribute(const char *hostname, const char *service,
 		return -1;
 	}
 
+	attr.hostname = cname;
+	attr.parent_type = SDB_SERVICE;
+	attr.parent = service;
+	attr.key = key;
+	attr.value = *value;
+	attr.last_update = last_update ? last_update : sdb_gettime();
+	if (get_interval(SDB_ATTRIBUTE, cname, SDB_SERVICE, service, key,
+				attr.last_update, &attr.interval)) {
+		free(cname);
+		return 1;
+	}
+	attr.backends = (const char * const *)backends;
+	get_backend(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_service_attr(cname, service,
-				key, value, last_update, writer->w_user_data);
+		s = writer->impl.store_attribute(&attr, writer->w_user_data);
 		if (((s > 0) && (status >= 0)) || (s < 0))
 			status = s;
 	}
@@ -1656,6 +1882,8 @@ 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 = SDB_STORE_ATTRIBUTE_INIT;
+	char *backends[1];
 	char *cname;
 
 	sdb_llist_iter_t *iter;
@@ -1676,13 +1904,26 @@ sdb_plugin_store_metric_attribute(const char *hostname, const char *metric,
 		return -1;
 	}
 
+	attr.hostname = cname;
+	attr.parent_type = SDB_METRIC;
+	attr.parent = metric;
+	attr.key = key;
+	attr.value = *value;
+	attr.last_update = last_update ? last_update : sdb_gettime();
+	if (get_interval(SDB_ATTRIBUTE, cname, SDB_METRIC, metric, key,
+				attr.last_update, &attr.interval)) {
+		free(cname);
+		return 1;
+	}
+	attr.backends = (const char * const *)backends;
+	get_backend(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_metric_attr(cname, metric,
-				key, value, last_update, writer->w_user_data);
+		s = writer->impl.store_attribute(&attr, writer->w_user_data);
 		if (((s > 0) && (status >= 0)) || (s < 0))
 			status = s;
 	}