index 9ba19b8acbeb6da1ed3513ac9676080b1ba2f0bf..0abf0cb467d3d0a66fb3f99008537bce2f8848de 100644 (file)
--- a/src/include/core/store.h
+++ b/src/include/core/store.h
#include "core/data.h"
#include "core/time.h"
#include "core/timeseries.h"
#include "core/data.h"
#include "core/time.h"
#include "core/timeseries.h"
+#include "parser/ast.h"
#include "utils/strbuf.h"
#include "utils/strbuf.h"
+#include <stdbool.h>
#include <stdio.h>
#ifdef __cplusplus
#include <stdio.h>
#ifdef __cplusplus
SDB_HOST = 1,
SDB_SERVICE,
SDB_METRIC,
SDB_HOST = 1,
SDB_SERVICE,
SDB_METRIC,
- SDB_ATTRIBUTE,
+
+ SDB_ATTRIBUTE = 1 << 4,
+
+ /*
+ * Queryable fields of a stored object.
+ */
+ SDB_FIELD_NAME = 1 << 8, /* type: string */
+ SDB_FIELD_LAST_UPDATE, /* type: datetime */
+ SDB_FIELD_AGE, /* type: datetime */
+ SDB_FIELD_INTERVAL, /* type: datetime */
+ SDB_FIELD_BACKEND, /* type: array of strings */
+ SDB_FIELD_VALUE, /* attributes only; type: type of the value */
};
#define SDB_STORE_TYPE_TO_NAME(t) \
(((t) == SDB_HOST) ? "host" \
: ((t) == SDB_SERVICE) ? "service" \
: ((t) == SDB_METRIC) ? "metric" \
};
#define SDB_STORE_TYPE_TO_NAME(t) \
(((t) == SDB_HOST) ? "host" \
: ((t) == SDB_SERVICE) ? "service" \
: ((t) == SDB_METRIC) ? "metric" \
- : ((t) == SDB_ATTRIBUTE) ? "attribute" : "unknown")
+ : ((t) == SDB_ATTRIBUTE) ? "attribute" \
+ : ((t) == (SDB_ATTRIBUTE | SDB_HOST)) ? "host attribute" \
+ : ((t) == (SDB_ATTRIBUTE | SDB_SERVICE)) ? "service attribute" \
+ : ((t) == (SDB_ATTRIBUTE | SDB_METRIC)) ? "metric attribute" \
+ : "unknown")
+
+#define SDB_FIELD_TO_NAME(f) \
+ (((f) == SDB_FIELD_NAME) ? "name" \
+ : ((f) == SDB_FIELD_LAST_UPDATE) ? "last-update" \
+ : ((f) == SDB_FIELD_AGE) ? "age" \
+ : ((f) == SDB_FIELD_INTERVAL) ? "interval" \
+ : ((f) == SDB_FIELD_BACKEND) ? "backend" \
+ : ((f) == SDB_FIELD_VALUE) ? "value" \
+ : "unknown")
+
+#define SDB_FIELD_TYPE(f) \
+ (((f) == SDB_FIELD_NAME) ? SDB_TYPE_STRING \
+ : ((f) == SDB_FIELD_LAST_UPDATE) ? SDB_TYPE_DATETIME \
+ : ((f) == SDB_FIELD_AGE) ? SDB_TYPE_DATETIME \
+ : ((f) == SDB_FIELD_INTERVAL) ? SDB_TYPE_DATETIME \
+ : ((f) == SDB_FIELD_BACKEND) ? (SDB_TYPE_ARRAY | SDB_TYPE_STRING) \
+ : ((f) == SDB_FIELD_VALUE) ? -1 /* unknown */ \
+ : -1)
/*
* sdb_store_obj_t represents the super-class of any object stored in the
/*
* sdb_store_obj_t represents the super-class of any object stored in the
struct sdb_store_obj;
typedef struct sdb_store_obj sdb_store_obj_t;
struct sdb_store_obj;
typedef struct sdb_store_obj sdb_store_obj_t;
+/*
+ * A metric store describes how to access a metric's data.
+ */
+typedef struct {
+ const char *type;
+ const char *id;
+} sdb_metric_store_t;
+
/*
* Expressions represent arithmetic expressions based on stored objects and
* their various attributes.
/*
* Expressions represent arithmetic expressions based on stored objects and
* their various attributes.
typedef struct sdb_store_expr sdb_store_expr_t;
#define SDB_STORE_EXPR(obj) ((sdb_store_expr_t *)(obj))
typedef struct sdb_store_expr sdb_store_expr_t;
#define SDB_STORE_EXPR(obj) ((sdb_store_expr_t *)(obj))
+/*
+ * An expression iterator iterates over the values of an iterable expression
+ * (see sdb_store_expr_iterable).
+ */
+struct sdb_store_expr_iter;
+typedef struct sdb_store_expr_iter sdb_store_expr_iter_t;
+
/*
* 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
/*
* 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
#define SDB_STORE_MATCHER(obj) ((sdb_store_matcher_t *)(obj))
/*
#define SDB_STORE_MATCHER(obj) ((sdb_store_matcher_t *)(obj))
/*
- * Queryable fields of a stored object.
+ * A JSON formatter converts stored objects into the JSON format.
+ * See http://www.ietf.org/rfc/rfc4627.txt
*/
*/
-enum {
- SDB_FIELD_NAME = 1, /* string */
- SDB_FIELD_LAST_UPDATE, /* datetime */
- SDB_FIELD_AGE, /* datetime */
- SDB_FIELD_INTERVAL, /* datetime */
- SDB_FIELD_BACKEND, /* string */
-};
-
-#define SDB_FIELD_TO_NAME(f) \
- (((f) == SDB_FIELD_NAME) ? "name" \
- : ((f) == SDB_FIELD_LAST_UPDATE) ? "last-update" \
- : ((f) == SDB_FIELD_AGE) ? "age" \
- : ((f) == SDB_FIELD_INTERVAL) ? "interval" \
- : ((f) == SDB_FIELD_BACKEND) ? "backend" : "unknown")
+struct sdb_store_json_formatter;
+typedef struct sdb_store_json_formatter sdb_store_json_formatter_t;
-#define SDB_FIELD_TYPE(f) \
- (((f) == SDB_FIELD_NAME) ? SDB_TYPE_STRING \
- : ((f) == SDB_FIELD_LAST_UPDATE) ? SDB_TYPE_DATETIME \
- : ((f) == SDB_FIELD_AGE) ? SDB_TYPE_DATETIME \
- : ((f) == SDB_FIELD_INTERVAL) ? SDB_TYPE_DATETIME \
- : ((f) == SDB_FIELD_BACKEND) ? (SDB_TYPE_ARRAY | SDB_TYPE_STRING) \
- : -1)
+/*
+ * A store writer describes the interface for plugins implementing a store.
+ */
+typedef struct {
+ int (*store_host)(const char *name, sdb_time_t last_update,
+ sdb_object_t *user_data);
+ int (*store_service)(const char *hostname, const char *name,
+ sdb_time_t last_update, sdb_object_t *user_data);
+ int (*store_metric)(const char *hostname, const char *name,
+ sdb_metric_store_t *store, sdb_time_t last_update,
+ sdb_object_t *user_data);
+ int (*store_attribute)(const char *hostname,
+ const char *key, const sdb_data_t *value, sdb_time_t last_update,
+ sdb_object_t *user_data);
+ int (*store_service_attr)(const char *hostname, const char *service,
+ const char *key, const sdb_data_t *value, sdb_time_t last_update,
+ sdb_object_t *user_data);
+ int (*store_metric_attr)(const char *hostname, const char *metric,
+ const char *key, const sdb_data_t *value, sdb_time_t last_update,
+ sdb_object_t *user_data);
+} sdb_store_writer_t;
/*
* sdb_store_clear:
/*
* sdb_store_clear:
* sdb_store_get_host increments the ref count of the host object. The caller
* needs to deref it when no longer using it.
*/
* sdb_store_get_host increments the ref count of the host object. The caller
* needs to deref it when no longer using it.
*/
-_Bool
+bool
sdb_store_has_host(const char *name);
sdb_store_obj_t *
sdb_store_has_host(const char *name);
sdb_store_obj_t *
sdb_store_service_attr(const char *hostname, const char *service,
const char *key, const sdb_data_t *value, sdb_time_t last_update);
sdb_store_service_attr(const char *hostname, const char *service,
const char *key, const sdb_data_t *value, sdb_time_t last_update);
-/*
- * A metric store describes how to access a metric's data.
- */
-typedef struct {
- const char *type;
- const char *id;
-} sdb_metric_store_t;
-
/*
* sdb_store_metric:
* Add/update a metric in the store. If the metric, identified by its name,
/*
* sdb_store_metric:
* Add/update a metric in the store. If the metric, identified by its name,
sdb_store_fetch_timeseries(const char *hostname, const char *metric,
sdb_timeseries_opts_t *opts, sdb_strbuf_t *buf);
sdb_store_fetch_timeseries(const char *hostname, const char *metric,
sdb_timeseries_opts_t *opts, sdb_strbuf_t *buf);
+/*
+ * sdb_store_get_child:
+ * Retrieve a host's child object of the specified type and name. The
+ * reference count of the child object will be incremented before returning
+ * it. The caller is responsible for releasing the object once it's no longer
+ * used.
+ *
+ * Returns:
+ * - the child object on success
+ * - NULL else
+ */
+sdb_store_obj_t *
+sdb_store_get_child(sdb_store_obj_t *host, int type, const char *name);
+
/*
* sdb_store_get_field:
* Get the value of a stored object's queryable field. The caller is
/*
* sdb_store_get_field:
* Get the value of a stored object's queryable field. The caller is
sdb_store_get_attr(sdb_store_obj_t *obj, const char *name, sdb_data_t *res,
sdb_store_matcher_t *filter);
sdb_store_get_attr(sdb_store_obj_t *obj, const char *name, sdb_data_t *res,
sdb_store_matcher_t *filter);
+/*
+ * sdb_store_query_prepare:
+ * Prepare the query described by 'ast' for execution in a store.
+ *
+ * Returns:
+ * - a store matcher on success
+ * - NULL else
+ */
+sdb_store_matcher_t *
+sdb_store_query_prepare(sdb_ast_node_t *ast);
+
/*
* sdb_store_expr_create:
* Creates an arithmetic expression implementing the specified operator on the
/*
* sdb_store_expr_create:
* Creates an arithmetic expression implementing the specified operator on the
sdb_store_expr_t *
sdb_store_expr_create(int op, sdb_store_expr_t *left, sdb_store_expr_t *right);
sdb_store_expr_t *
sdb_store_expr_create(int op, sdb_store_expr_t *left, sdb_store_expr_t *right);
+/*
+ * sdb_store_expr_typed:
+ * Creates an expression which evaluates in the context of an object's sibling
+ * as specified by the given type.
+ *
+ * Returns:
+ * - an expression object on success
+ * - NULL else
+ */
+sdb_store_expr_t *
+sdb_store_expr_typed(int typ, sdb_store_expr_t *expr);
+
/*
* sdb_store_expr_fieldvalue:
* Creates an expression which evaluates to the value of the specified
/*
* sdb_store_expr_fieldvalue:
* Creates an expression which evaluates to the value of the specified
sdb_data_t *res, sdb_store_matcher_t *filter);
/*
sdb_data_t *res, sdb_store_matcher_t *filter);
/*
- * sdb_store_isnull_matcher:
- * Creates a matcher matching NULL values.
+ * sdb_store_expr_iterable:
+ * Check whether an expression, evaluated in the specified context (HOST,
+ * SERVICE, METRIC) is iterable, that is, if it may evaluate to multiple
+ * values.
+ */
+bool
+sdb_store_expr_iterable(sdb_store_expr_t *expr, int context);
+
+/*
+ * sdb_store_expr_iter:
+ * Iterate over the elements of an iterable expression. sdb_store_expr_iter
+ * returns NULL if the expression is not iterable (for the specified object).
+ * See also sdb_store_expr_iterable.
+ *
+ * sdb_store_expr_iter_get_next returns NULL if there is no next element.
+ */
+sdb_store_expr_iter_t *
+sdb_store_expr_iter(sdb_store_expr_t *expr, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter);
+void
+sdb_store_expr_iter_destroy(sdb_store_expr_iter_t *iter);
+
+bool
+sdb_store_expr_iter_has_next(sdb_store_expr_iter_t *iter);
+sdb_data_t
+sdb_store_expr_iter_get_next(sdb_store_expr_iter_t *iter);
+
+/*
+ * sdb_store_dis_matcher:
+ * Creates a matcher matching the disjunction (logical OR) of two matchers.
*/
sdb_store_matcher_t *
*/
sdb_store_matcher_t *
-sdb_store_isnull_matcher(sdb_store_expr_t *expr);
+sdb_store_dis_matcher(sdb_store_matcher_t *left, sdb_store_matcher_t *right);
/*
/*
- * sdb_store_isnnull_matcher:
- * Creates a matcher matching non-NULL values.
+ * sdb_store_con_matcher:
+ * Creates a matcher matching the conjunction (logical AND) of two matchers.
*/
sdb_store_matcher_t *
*/
sdb_store_matcher_t *
-sdb_store_isnnull_matcher(sdb_store_expr_t *expr);
+sdb_store_con_matcher(sdb_store_matcher_t *left, sdb_store_matcher_t *right);
+
+/*
+ * sdb_store_inv_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_any_matcher:
/*
* sdb_store_any_matcher:
- * Creates a matcher iterating over objects of the specified type. It matches
- * if *any* of those objects match 'm'.
+ * Creates a matcher iterating over values of the first expression (which has
+ * to be iterable). It matches if *any* of those elements match 'm'. 'm' has
+ * to be an ary operation with the left operand unset.
*/
sdb_store_matcher_t *
*/
sdb_store_matcher_t *
-sdb_store_any_matcher(int type, sdb_store_matcher_t *m);
+sdb_store_any_matcher(sdb_store_expr_t *iter, sdb_store_matcher_t *m);
/*
* sdb_store_all_matcher:
/*
* sdb_store_all_matcher:
- * Creates a matcher iterating over objects of the specified type. It matches
- * if *all* of those objects match 'm'.
+ * Creates a matcher iterating over values of the first expression (which has
+ * to be iterable). It matches if *all* of those elements match 'm'. 'm' has
+ * to be an ary operation with the left operand unset.
+ */
+sdb_store_matcher_t *
+sdb_store_all_matcher(sdb_store_expr_t *iter, sdb_store_matcher_t *m);
+
+/*
+ * sdb_store_in_matcher:
+ * Creates a matcher which matches if the right value evaluates to an array
+ * value and the left value is included in that array. See sdb_data_inarray
+ * for more details.
+ */
+sdb_store_matcher_t *
+sdb_store_in_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right);
+
+/*
+ * sdb_store_nin_matcher:
+ * Like sdb_store_in_matcher but matches if the left value is not included in
+ * the right value.
*/
sdb_store_matcher_t *
*/
sdb_store_matcher_t *
-sdb_store_all_matcher(int type, sdb_store_matcher_t *m);
+sdb_store_nin_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right);
/*
* sdb_store_lt_matcher, sdb_store_le_matcher, sdb_store_eq_matcher,
/*
* sdb_store_lt_matcher, sdb_store_le_matcher, sdb_store_eq_matcher,
sdb_store_matcher_t *
sdb_store_gt_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right);
sdb_store_matcher_t *
sdb_store_gt_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right);
-/*
- * sdb_store_in_matcher:
- * Creates a matcher which matches if the right value evaluates to an array
- * value and the left value is included in that array. See sdb_data_inarray
- * for more details.
- */
-sdb_store_matcher_t *
-sdb_store_in_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right);
-
/*
* sdb_store_regex_matcher:
* Creates a matcher which matches the string value the left expression
/*
* sdb_store_regex_matcher:
* Creates a matcher which matches the string value the left expression
sdb_store_matcher_t *
sdb_store_nregex_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right);
sdb_store_matcher_t *
sdb_store_nregex_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right);
+/*
+ * sdb_store_isnull_matcher:
+ * Creates a matcher matching NULL values.
+ */
+sdb_store_matcher_t *
+sdb_store_isnull_matcher(sdb_store_expr_t *expr);
+
+/*
+ * sdb_store_isnnull_matcher:
+ * Creates a matcher matching non-NULL values.
+ */
+sdb_store_matcher_t *
+sdb_store_isnnull_matcher(sdb_store_expr_t *expr);
+
+/*
+ * sdb_store_matcher_matches:
+ * Check whether the specified matcher matches the specified store object. If
+ * specified, the filter will be used to preselect objects for further
+ * evaluation. It is applied to any object that's used during the evaluation
+ * of the matcher. Only those objects matching the filter will be considered.
+ *
+ * Note that the filter is applied to all object types (hosts, service,
+ * metric, attribute). Thus, any object-specific matchers are mostly unsuited
+ * for this purpose and, if used, may result in unexpected behavior.
+ *
+ * Returns:
+ * - 1 if the object matches
+ * - 0 else
+ */
+int
+sdb_store_matcher_matches(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter);
+
/*
* sdb_store_matcher_op_cb:
* Callback constructing a matcher operator.
/*
* sdb_store_matcher_op_cb:
* Callback constructing a matcher operator.
int
sdb_store_parse_field_name(const char *name);
int
sdb_store_parse_field_name(const char *name);
-/*
- * 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. If
- * specified, the filter will be used to preselect objects for further
- * evaluation. It is applied to any object that's used during the evaluation
- * of the matcher. Only those objects matching the filter will be considered.
- *
- * Note that the filter is applied to all object types (hosts, service,
- * metric, attribute). Thus, any object-specific matchers are mostly unsuited
- * for this purpose and, if used, may result in unexpected behavior.
- *
- * Returns:
- * - 1 if the object matches
- * - 0 else
- */
-int
-sdb_store_matcher_matches(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
- sdb_store_matcher_t *filter);
-
/*
* sdb_store_lookup_cb:
* Lookup callback. It is called for each matching object when looking up data
/*
* 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.
+ * in the store passing on the lookup filter and the specified user-data. The
+ * lookup aborts early if the callback returns non-zero.
*/
*/
-typedef int (*sdb_store_lookup_cb)(sdb_store_obj_t *obj, void *user_data);
+typedef int (*sdb_store_lookup_cb)(sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter, void *user_data);
/*
* sdb_store_scan:
/*
* sdb_store_scan:
- * Look up objects in the store. The specified callback function is called for
- * each object in the store matching 'm'. The function performs a full scan of
- * all hosts stored in the database. If specified, the filter will be used to
- * preselect objects for further evaluation. See the description of
- * 'sdb_store_matcher_matches' for details.
+ * Look up objects of the specified type in the store. The specified callback
+ * function is called for each object in the store matching 'm'. The function
+ * performs a full scan of all objects stored in the database. If specified,
+ * the filter will be used to preselect objects for further evaluation. See
+ * the description of 'sdb_store_matcher_matches' for details.
*
* Returns:
* - 0 on success
* - a negative value else
*/
int
*
* Returns:
* - 0 on success
* - a negative value else
*/
int
-sdb_store_scan(sdb_store_matcher_t *m, sdb_store_matcher_t *filter,
+sdb_store_scan(int type, sdb_store_matcher_t *m, sdb_store_matcher_t *filter,
sdb_store_lookup_cb cb, void *user_data);
/*
sdb_store_lookup_cb cb, void *user_data);
/*
- * Flags for serialization functions.
- *
- * By default, the full host object will be included in the serialized output.
- * When specifying any of the flags, the respective information will be left
- * out. The SKIP_EMPTY flags may be used to skip host objects entirely.
+ * Flags for JSON formatting.
*/
enum {
*/
enum {
- SDB_SKIP_ATTRIBUTES = 1 << 0,
- SDB_SKIP_SERVICES = 1 << 1,
- SDB_SKIP_METRICS = 1 << 2,
- SDB_SKIP_SERVICE_ATTRIBUTES = 1 << 3,
-
- SDB_SKIP_ALL = (1 << 8) - 1,
-
- /* skip hosts if they do not reference any services/metrics */
- SDB_SKIP_EMPTY_SERVICES = 1 << 8,
- SDB_SKIP_EMPTY_METRICS = 1 << 9,
+ SDB_WANT_ARRAY = 1 << 0,
};
/*
};
/*
- * sdb_store_tojson:
- * Serialize the entire store to JSON and append the result to the specified
- * buffer. If specified, only objects matching the filter will be included in
- * the result (see sdb_store_host_tojson for details).
- *
- * Returns:
- * - 0 on success
- * - a negative value on error
+ * sdb_store_json_formatter:
+ * Create a JSON formatter for the specified object types writing to the
+ * specified buffer.
*/
*/
-int
-sdb_store_tojson(sdb_strbuf_t *buf, sdb_store_matcher_t *filter, int flags);
+sdb_store_json_formatter_t *
+sdb_store_json_formatter(sdb_strbuf_t *buf, int type, int flags);
/*
/*
- * sdb_store_host_tojson:
- * Serialize a host object to JSON and append the result to the specified
- * buffer. If specified, only objects matching the filter will be included in
- * the result. The filter is applied to each object individually and, thus,
- * should not be of any object-type specific kind. The filter is never applied
- * to the specified host object; the caller is responsible for this and for
- * correctly handling skipped hosts.
+ * sdb_store_json_emit:
+ * Serialize a single object to JSON adding it to the string buffer associated
+ * with the formatter object. The serialized object will not include
+ * attributes or any child objects. Instead, call the function again for each
+ * of those objects. All attributes have to be emitted before any other
+ * children types. Use sdb_store_json_emit_full() to emit a full (filtered)
+ * object.
+ *
+ * Note that the output might not be valid JSON before calling
+ * sdb_store_json_finish().
*
* Returns:
* - 0 on success
*
* Returns:
* - 0 on success
- * - a negative value on error
+ * - a negative value else
*/
int
*/
int
-sdb_store_host_tojson(sdb_store_obj_t *host, sdb_strbuf_t *buf,
- sdb_store_matcher_t *filter, 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_obj_t *obj, void *user_data);
+sdb_store_json_emit(sdb_store_json_formatter_t *f, sdb_store_obj_t *obj);
/*
/*
- * 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.
+ * sdb_store_json_emit_full:
+ * Serialize a single object including it's attributes and all children to
+ * JSON, adding it to the string buffer associated with the formatter object.
+ * The filter, if specified, is applied to each attribute and child object.
+ * Only matching objects will be included in the output.
+ *
+ * Note that the output might not be valid JSON before calling
+ * sdb_store_json_finish().
*
* Returns:
* - 0 on success
* - a negative value else
*/
int
*
* Returns:
* - 0 on success
* - a negative value else
*/
int
-sdb_store_iterate(sdb_store_iter_cb cb, void *user_data);
+sdb_store_json_emit_full(sdb_store_json_formatter_t *f, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter);
+
+/*
+ * sdb_store_json_finish:
+ * Finish the JSON output. This function has to be called once after emiting
+ * all objects.
+ */
+int
+sdb_store_json_finish(sdb_store_json_formatter_t *f);
#ifdef __cplusplus
} /* extern "C" */
#ifdef __cplusplus
} /* extern "C" */