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index 8c46eb740065cccde034cf39cab73e6e037e9c1e..856e19c5220894e558e5e0f1d03afb68ac7dda23 100644 (file)
--- a/src/include/core/store.h
+++ b/src/include/core/store.h
extern "C" {
#endif
+/*
+ * Store object types.
+ */
+enum {
+ SDB_HOST = 1,
+ SDB_SERVICE,
+ SDB_ATTRIBUTE,
+};
+#define SDB_STORE_TYPE_TO_NAME(t) \
+ (((t) == SDB_HOST) ? "host" \
+ : ((t) == SDB_SERVICE) ? "service" \
+ : ((t) == SDB_ATTRIBUTE) ? "attribute" : "unknown")
+
+
/*
* sdb_store_base_t represents the super-class of any object stored in the
* database. It inherits from sdb_object_t and may safely be cast to a generic
sdb_time_t last_update);
/*
- * Store matchers may be used to lookup objects from the host based on their
- * various attributes. Each type of matcher evaluates attributes of the
- * respective object type.
+ * Store matchers may be used to lookup hosts from the store based on their
+ * various attributes. Service and attribute matchers are applied to a host's
+ * services and attributes and evaluate to true if *any* service or attribute
+ * matches.
*
* For each matcher object, *all* specified attributes have to match.
*
*/
struct sdb_store_matcher;
typedef struct sdb_store_matcher sdb_store_matcher_t;
+#define SDB_STORE_MATCHER(obj) ((sdb_store_matcher_t *)(obj))
+
+/*
+ * sdb_store_name_matcher:
+ * Creates a matcher matching by the specified object type's name. If 're' is
+ * true, the specified name is treated as a POSIX extended regular expression.
+ * Else, the exact name has to match.
+ */
+sdb_store_matcher_t *
+sdb_store_name_matcher(int type, const char *name, _Bool re);
/*
* sdb_store_attr_matcher:
const char *attr_value, const char *attr_value_re);
/*
- * sdb_store_service_matcher:
- * Creates a matcher matching services based on their name or attributes.
+ * sdb_store_host_matcher:
+ * Creates a matcher matching hosts based on their name or its attributes.
*/
sdb_store_matcher_t *
-sdb_store_service_matcher(const char *service_name, const char *service_name_re,
+sdb_store_host_matcher(const char *host_name, const char *host_name_re,
sdb_store_matcher_t *attr_matcher);
/*
- * sdb_store_host_matcher:
- * Creates a matcher matching hosts based on their name, services assigned to
- * the host, or its attributes.
+ * sdb_store_matcher_parse_cmp:
+ * Parse a simple compare expression (<obj_type>.<attr> <op> <value>).
+ *
+ * Returns:
+ * - a matcher object on success
+ * - NULL else
*/
sdb_store_matcher_t *
-sdb_store_host_matcher(const char *host_name, const char *host_name_re,
- sdb_store_matcher_t *service_matcher,
- sdb_store_matcher_t *attr_matcher);
+sdb_store_matcher_parse_cmp(const char *obj_type, const char *attr,
+ const char *op, const char *value);
/*
* sdb_store_dis_matcher:
sdb_store_matcher_t *
sdb_store_con_matcher(sdb_store_matcher_t *left, sdb_store_matcher_t *right);
+/*
+ * sdb_store_con_matcher::
+ * Creates a matcher matching the inverse (logical NOT) of a matcher.
+ */
+sdb_store_matcher_t *
+sdb_store_inv_matcher(sdb_store_matcher_t *m);
+
/*
* sdb_store_matcher_matches:
* Check whether the specified matcher matches the specified store object.
*
* Returns:
- * - 0 if the object matches
- * - a negative value else
+ * - 1 if the object matches
+ * - 0 else
*/
int
sdb_store_matcher_matches(sdb_store_matcher_t *m, sdb_store_base_t *obj);
+/*
+ * sdb_store_matcher_tostring:
+ * Format a matcher object as string. This is meant for logging or debugging
+ * purposes.
+ */
+char *
+sdb_store_matcher_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen);
+
+/*
+ * sdb_store_lookup_cb:
+ * Lookup callback. It is called for each matching object when looking up data
+ * in the store. The lookup aborts if the callback returns non-zero.
+ */
+typedef int (*sdb_store_lookup_cb)(sdb_store_base_t *obj, void *user_data);
+
+/*
+ * sdb_store_lookup:
+ * Look up objects in the store. The specified callback function is called for
+ * each object in the store matching 'm'.
+ *
+ * Returns:
+ * - 0 on success
+ * - a negative value else
+ */
+int
+sdb_store_lookup(sdb_store_matcher_t *m, sdb_store_lookup_cb cb,
+ void *user_data);
+
/*
* Flags for serialization functions.
*
SDB_SKIP_ATTRIBUTES = 1 << 0,
SDB_SKIP_SERVICES = 1 << 1,
SDB_SKIP_SERVICE_ATTRIBUTES = 1 << 2,
+
+ SDB_SKIP_ALL = 0xffff,
};
/*
int
sdb_store_host_tojson(sdb_store_base_t *host, sdb_strbuf_t *buf, int flags);
+/*
+ * sdb_store_iter_cb:
+ * Store iterator callback. Iteration stops if the callback returns non-zero.
+ */
+typedef int (*sdb_store_iter_cb)(sdb_store_base_t *obj, void *user_data);
+
+/*
+ * sdb_store_iterate:
+ * Iterate the entire store, calling the specified callback for each object.
+ * The user_data pointer is passed on to each call of the callback.
+ *
+ * Returns:
+ * - 0 on success
+ * - a negative value else
+ */
+int
+sdb_store_iterate(sdb_store_iter_cb cb, void *user_data);
+
#ifdef __cplusplus
} /* extern "C" */
#endif