X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=src%2Finclude%2Fcore%2Fstore.h;h=6106b3fdbe2490629a6b1e42d02ee85184d134dc;hb=a90a18a7947c8803f7049551bedc81a669a07834;hp=100aadf260700bdbb0c77f59c16cfedd0ca50048;hpb=3cc3e3c36239c902263678100180c95c8263f7f8;p=sysdb.git

diff --git a/src/include/core/store.h b/src/include/core/store.h
index 100aadf..6106b3f 100644
--- a/src/include/core/store.h
+++ b/src/include/core/store.h
@@ -49,6 +49,13 @@ extern "C" {
 struct sdb_store_base;
 typedef struct sdb_store_base sdb_store_base_t;
 
+/*
+ * sdb_store_clear:
+ * Clear the entire store and remove all stored objects.
+ */
+void
+sdb_store_clear(void);
+
 /*
  * sdb_store_host:
  * Add/update a host in the store. If the host, identified by its
@@ -120,6 +127,120 @@ int
 sdb_store_service(const char *hostname, const char *name,
 		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.
+ *
+ * For each matcher object, *all* specified attributes have to match.
+ *
+ * A store matcher object inherits from sdb_object_t and, thus, may safely be
+ * cast to a generic object.
+ */
+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_attr_matcher:
+ * Creates a matcher matching attributes based on their name or value. Either
+ * a complete name (which will have to match completely but case-independent)
+ * or an extended POSIX regular expression may be specified.
+ */
+sdb_store_matcher_t *
+sdb_store_attr_matcher(const char *attr_name, const char *attr_name_re,
+		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_matcher_t *
+sdb_store_service_matcher(const char *service_name, const char *service_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_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:
+ * Parse a simple compare expression (<obj_type>.<attr> <op> <value>).
+ *
+ * Returns:
+ *  - a matcher object on success
+ *  - NULL else
+ */
+sdb_store_matcher_t *
+sdb_store_matcher_parse_cmp(const char *obj_type, const char *attr,
+		const char *op, const char *value);
+
+/*
+ * sdb_store_dis_matcher:
+ * Creates a matcher matching the disjunction (logical OR) of two matchers.
+ */
+sdb_store_matcher_t *
+sdb_store_dis_matcher(sdb_store_matcher_t *left, sdb_store_matcher_t *right);
+
+/*
+ * sdb_store_con_matcher:
+ * Creates a matcher matching the conjunction (logical AND) of two matchers.
+ */
+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:
+ *  - 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.
  *
@@ -130,6 +251,8 @@ enum {
 	SDB_SKIP_ATTRIBUTES         = 1 << 0,
 	SDB_SKIP_SERVICES           = 1 << 1,
 	SDB_SKIP_SERVICE_ATTRIBUTES = 1 << 2,
+
+	SDB_SKIP_ALL                = 0xffff,
 };
 
 /*
@@ -156,6 +279,24 @@ sdb_store_tojson(sdb_strbuf_t *buf, int flags);
 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