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index d4a3d6cccb83ba3612416faec7edd3b03995dedc..e2ae0669f3cdc64300d5a8d49ecc3b032deea49a 100644 (file)
--- a/src/core/store_lookup.c
+++ b/src/core/store_lookup.c
#include <stdlib.h>
#include <string.h>
+#include <limits.h>
+
/*
* private data types
*/
-/* match the name of something */
typedef struct {
- char *name;
- regex_t *name_re;
-} name_matcher_t;
-
-/* matcher base type */
-struct sdb_store_matcher {
- sdb_object_t super;
- /* type of the matcher */
- int type;
-};
-#define M(m) ((sdb_store_matcher_t *)(m))
-
-/* logical operator matcher */
-typedef struct {
- sdb_store_matcher_t super;
-
- /* left and right hand operands */
- sdb_store_matcher_t *left;
- sdb_store_matcher_t *right;
-} op_matcher_t;
-#define OP_M(m) ((op_matcher_t *)(m))
+ sdb_store_matcher_t *m;
+ sdb_store_matcher_t *filter;
+ sdb_store_lookup_cb cb;
+ void *user_data;
+} scan_iter_data_t;
-/* match any type of object by it's base information */
-typedef struct {
- sdb_store_matcher_t super;
-
- /* match by the name of the object */
- name_matcher_t name;
-} obj_matcher_t;
-#define OBJ_M(m) ((obj_matcher_t *)(m))
+/*
+ * private helper functions
+ */
-/* match attributes */
-typedef struct {
- obj_matcher_t super;
- /* XXX: this needs to be more flexible;
- * add support for type-specific operators */
- name_matcher_t value;
-} attr_matcher_t;
-#define ATTR_M(m) ((attr_matcher_t *)(m))
-
-/* match services */
-typedef struct {
- obj_matcher_t super;
- /* match by attributes assigned to the service */
- attr_matcher_t *attr;
-} service_matcher_t;
-#define SERVICE_M(m) ((service_matcher_t *)(m))
+static int
+scan_iter(sdb_store_obj_t *obj, void *user_data)
+{
+ scan_iter_data_t *d = user_data;
-/* match hosts */
-typedef struct {
- obj_matcher_t super;
- /* match by services assigned to the host */
- service_matcher_t *service;
- /* match by attributes assigned to the host */
- attr_matcher_t *attr;
-} host_matcher_t;
-#define HOST_M(m) ((host_matcher_t *)(m))
+ if (sdb_store_matcher_matches(d->m, obj, d->filter))
+ return d->cb(obj, d->user_data);
+ return 0;
+} /* scan_iter */
/*
* matcher implementations
*/
static int
-match_logical(sdb_store_matcher_t *m, sdb_store_base_t *obj);
-static int
-match_obj(sdb_store_matcher_t *m, sdb_store_base_t *obj);
-
-/* specific matchers */
-
-static int
-match_name(name_matcher_t *m, const char *name)
+match_string(string_matcher_t *m, const char *name)
{
- assert(m);
-
if ((! m->name) && (! m->name_re))
- return 0;
+ return 1;
if (! name)
name = "";
if (m->name && strcasecmp(m->name, name))
- return -1;
+ return 0;
if (m->name_re && regexec(m->name_re, name,
/* matches */ 0, NULL, /* flags = */ 0))
- return -1;
- return 0;
-} /* match_name */
+ return 0;
+ return 1;
+} /* match_string */
-/* match attribute specific values;
- * always call this function through match_obj() */
static int
-match_attr(attr_matcher_t *m, sdb_store_base_t *obj)
+match_logical(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
{
- assert(m && obj);
+ int status;
- if (obj->type != SDB_ATTRIBUTE)
- return -1;
+ assert((m->type == MATCHER_AND) || (m->type == MATCHER_OR));
+ assert(OP_M(m)->left && OP_M(m)->right);
- {
- sdb_attribute_t *attr = SDB_ATTR(obj);
- char buf[sdb_data_strlen(&attr->value) + 1];
+ status = sdb_store_matcher_matches(OP_M(m)->left, obj, filter);
- if (sdb_data_format(&attr->value, buf, sizeof(buf), SDB_UNQUOTED) <= 0)
- return -1;
- return match_name(&m->value, buf);
- }
-} /* match_attr */
+ /* lazy evaluation */
+ if ((! status) && (m->type == MATCHER_AND))
+ return status;
+ else if (status && (m->type == MATCHER_OR))
+ return status;
+
+ return sdb_store_matcher_matches(OP_M(m)->right, obj, filter);
+} /* match_logical */
-/* match service specific values;
- * always call this function through match_obj() */
static int
-match_service(service_matcher_t *m, sdb_store_base_t *obj)
+match_unary(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
{
- sdb_llist_iter_t *iter;
+ assert(m->type == MATCHER_NOT);
+ assert(UOP_M(m)->op);
- assert(m && obj);
+ return !sdb_store_matcher_matches(UOP_M(m)->op, obj, filter);
+} /* match_unary */
- if (obj->type != SDB_SERVICE)
- return -1;
+static int
+match_name(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
+{
+ sdb_avltree_iter_t *iter = NULL;
+ int status = 0;
+
+ assert(m->type == MATCHER_NAME);
- if (! m->attr)
+ if (obj->type == NAME_M(m)->obj_type)
+ return match_string(&NAME_M(m)->name, SDB_OBJ(obj)->name);
+ else if (obj->type != SDB_HOST)
return 0;
- iter = sdb_llist_get_iter(SDB_STORE_OBJ(obj)->attributes);
- while (sdb_llist_iter_has_next(iter)) {
- sdb_store_base_t *attr = STORE_BASE(sdb_llist_iter_get_next(iter));
+ switch (NAME_M(m)->obj_type) {
+ case SDB_SERVICE:
+ iter = sdb_avltree_get_iter(HOST(obj)->services);
+ break;
+ case SDB_METRIC:
+ iter = sdb_avltree_get_iter(HOST(obj)->metrics);
+ break;
+ case SDB_ATTRIBUTE:
+ iter = sdb_avltree_get_iter(HOST(obj)->attributes);
+ break;
+ }
- /* if any of the attributes matches we found a matching service */
- if (! match_obj(M(m->attr), attr)) {
- sdb_llist_iter_destroy(iter);
- return 0;
+ while (sdb_avltree_iter_has_next(iter)) {
+ sdb_object_t *child = sdb_avltree_iter_get_next(iter);
+ if (filter && (! sdb_store_matcher_matches(filter, STORE_OBJ(child),
+ NULL)))
+ continue;
+ if (match_string(&NAME_M(m)->name, child->name)) {
+ status = 1;
+ break;
}
}
- sdb_llist_iter_destroy(iter);
- return -1;
-} /* match_service */
+ sdb_avltree_iter_destroy(iter);
+ return status;
+} /* match_name */
-/* match host specific values;
- * always call this function through match_obj() */
static int
-match_host(host_matcher_t *m, sdb_store_base_t *obj)
+match_child(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
{
- sdb_llist_iter_t *iter;
- int status;
+ sdb_avltree_iter_t *iter = NULL;
+ int status = 0;
- assert(m && obj);
+ assert((m->type == MATCHER_SERVICE)
+ || (m->type == MATCHER_METRIC)
+ || (m->type == MATCHER_ATTRIBUTE));
+ /* TODO: support all object types */
if (obj->type != SDB_HOST)
- return -1;
-
- if (m->service) {
- iter = sdb_llist_get_iter(SDB_STORE_OBJ(obj)->children);
- status = -1;
- }
- else {
- iter = NULL;
- status = 0;
- }
- while (sdb_llist_iter_has_next(iter)) {
- sdb_store_base_t *service = STORE_BASE(sdb_llist_iter_get_next(iter));
+ return 0;
- /* found a matching service */
- if (! match_obj(M(m->service), service)) {
- status = 0;
+ if (m->type == MATCHER_SERVICE)
+ iter = sdb_avltree_get_iter(HOST(obj)->services);
+ else if (m->type == MATCHER_METRIC)
+ iter = sdb_avltree_get_iter(HOST(obj)->metrics);
+ else if (m->type == SDB_ATTRIBUTE)
+ iter = sdb_avltree_get_iter(HOST(obj)->attributes);
+
+ while (sdb_avltree_iter_has_next(iter)) {
+ sdb_object_t *child = sdb_avltree_iter_get_next(iter);
+ if (filter && (! sdb_store_matcher_matches(filter,
+ STORE_OBJ(child), NULL)))
+ continue;
+
+ if (sdb_store_matcher_matches(CHILD_M(m)->m, obj, filter)) {
+ status = 1;
break;
}
}
- sdb_llist_iter_destroy(iter);
-
- if (status)
- return status;
- else if (! m->attr)
- return 0;
+ sdb_avltree_iter_destroy(iter);
+ return status;
+} /* match_child */
- iter = sdb_llist_get_iter(SDB_STORE_OBJ(obj)->attributes);
- while (sdb_llist_iter_has_next(iter)) {
- sdb_store_base_t *attr = STORE_BASE(sdb_llist_iter_get_next(iter));
+/*
+ * cmp_expr:
+ * Compare the values of two expressions when evaluating them using the
+ * specified stored object and filter. Returns a value less than, equal to, or
+ * greater than zero if the value of the first expression compares less than,
+ * equal to, or greater than the value of the second expression. Returns
+ * INT_MAX if any of the expressions could not be evaluated or if any of them
+ * evaluated to NULL.
+ */
+static int
+cmp_expr(sdb_store_expr_t *e1, sdb_store_expr_t *e2,
+ sdb_store_obj_t *obj, sdb_store_matcher_t *filter)
+{
+ sdb_data_t v1 = SDB_DATA_INIT, v2 = SDB_DATA_INIT;
+ int status;
- /* if any attribute matches, we found a matching host */
- if (! match_obj(M(m->attr), attr)) {
- sdb_llist_iter_destroy(iter);
- return 0;
- }
+ if (sdb_store_expr_eval(e1, obj, &v1, filter))
+ return INT_MAX;
+ if (sdb_store_expr_eval(e2, obj, &v2, filter)) {
+ sdb_data_free_datum(&v1);
+ return INT_MAX;
}
- sdb_llist_iter_destroy(iter);
- return -1;
-} /* match_host */
-/* generic matchers */
+ if (sdb_data_isnull(&v1) || (sdb_data_isnull(&v2)))
+ status = INT_MAX;
+ else if (v1.type == v2.type)
+ status = sdb_data_cmp(&v1, &v2);
+ else
+ status = sdb_data_strcmp(&v1, &v2);
-enum {
- MATCHER_OR,
- MATCHER_AND,
- MATCHER_ATTR,
- MATCHER_SERVICE,
- MATCHER_HOST,
-};
-
-typedef int (*matcher_cb)(sdb_store_matcher_t *, sdb_store_base_t *);
+ sdb_data_free_datum(&v1);
+ sdb_data_free_datum(&v2);
+ return status;
+} /* cmp_expr */
-/* this array needs to be indexable by the matcher types */
-static matcher_cb matchers[] = {
- match_logical,
- match_logical,
- match_obj,
- match_obj,
- match_obj,
-};
+static int
+match_lt(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
+{
+ int status;
+ assert(m->type == MATCHER_LT);
+ status = cmp_expr(CMP_M(m)->left, CMP_M(m)->right, obj, filter);
+ return (status != INT_MAX) && (status < 0);
+} /* match_lt */
static int
-match_logical(sdb_store_matcher_t *m, sdb_store_base_t *obj)
+match_le(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
{
int status;
+ assert(m->type == MATCHER_LE);
+ status = cmp_expr(CMP_M(m)->left, CMP_M(m)->right, obj, filter);
+ return (status != INT_MAX) && (status <= 0);
+} /* match_le */
- assert(m && obj);
- assert(OP_M(m)->left && OP_M(m)->right);
+static int
+match_eq(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
+{
+ int status;
+ assert(m->type == MATCHER_EQ);
+ status = cmp_expr(CMP_M(m)->left, CMP_M(m)->right, obj, filter);
+ return (status != INT_MAX) && (! status);
+} /* match_eq */
- status = sdb_store_matcher_matches(OP_M(m)->left, obj);
- /* lazy evaluation */
- if (status && (m->type == MATCHER_AND))
- return status;
- else if ((! status) && (m->type == MATCHER_OR))
- return status;
+static int
+match_ne(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
+{
+ int status;
+ assert(m->type == MATCHER_NE);
+ status = cmp_expr(CMP_M(m)->left, CMP_M(m)->right, obj, filter);
+ return (status != INT_MAX) && status;
+} /* match_ne */
- return sdb_store_matcher_matches(OP_M(m)->right, obj);
-} /* match_logical */
+static int
+match_ge(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
+{
+ int status;
+ assert(m->type == MATCHER_GE);
+ status = cmp_expr(CMP_M(m)->left, CMP_M(m)->right, obj, filter);
+ return (status != INT_MAX) && (status >= 0);
+} /* match_ge */
static int
-match_obj(sdb_store_matcher_t *m, sdb_store_base_t *obj)
+match_gt(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
{
int status;
+ assert(m->type == MATCHER_GT);
+ status = cmp_expr(CMP_M(m)->left, CMP_M(m)->right, obj, filter);
+ return (status != INT_MAX) && (status > 0);
+} /* match_gt */
+
+static int
+match_in(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
+{
+ sdb_data_t value = SDB_DATA_INIT, array = SDB_DATA_INIT;
+ int status = 1;
+
+ assert(m->type == MATCHER_IN);
- assert(m && obj);
+ if ((sdb_store_expr_eval(CMP_M(m)->left, obj, &value, filter))
+ || (sdb_store_expr_eval(CMP_M(m)->right, obj, &array, filter)))
+ status = 0;
- status = match_name(&OBJ_M(m)->name, obj->super.name);
if (status)
- return status;
+ status = sdb_data_inarray(&value, &array);
- switch (m->type) {
- case MATCHER_ATTR:
- return match_attr(ATTR_M(m), obj);
- break;
- case MATCHER_SERVICE:
- return match_service(SERVICE_M(m), obj);
- break;
- case MATCHER_HOST:
- return match_host(HOST_M(m), obj);
- break;
+ sdb_data_free_datum(&value);
+ sdb_data_free_datum(&array);
+ return status;
+} /* match_in */
+
+static int
+match_regex(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
+{
+ sdb_data_t v = SDB_DATA_INIT;
+ int status = 0;
+
+ regex_t regex;
+ _Bool free_regex = 0;
+
+ assert((m->type == MATCHER_REGEX)
+ || (m->type == MATCHER_NREGEX));
+
+ if (! CMP_M(m)->right->type) {
+ assert(CMP_M(m)->right->data.type == SDB_TYPE_REGEX);
+ regex = CMP_M(m)->right->data.data.re.regex;
}
- return -1;
-} /* match_obj */
+ else {
+ sdb_data_t tmp = SDB_DATA_INIT;
+ char *raw;
+
+ if (sdb_store_expr_eval(CMP_M(m)->right, obj, &tmp, filter))
+ return 0;
+
+ if (tmp.type != SDB_TYPE_STRING) {
+ sdb_data_free_datum(&tmp);
+ return 0;
+ }
+
+ raw = tmp.data.string;
+ if (sdb_data_parse(raw, SDB_TYPE_REGEX, &tmp)) {
+ free(raw);
+ return 0;
+ }
+
+ regex = tmp.data.re.regex;
+ free_regex = 1;
+ free(tmp.data.re.raw);
+ free(raw);
+ }
+
+ if ((sdb_store_expr_eval(CMP_M(m)->left, obj, &v, filter))
+ || (sdb_data_isnull(&v)))
+ status = 0;
+ else {
+ char value[sdb_data_strlen(&v) + 1];
+ if (sdb_data_format(&v, value, sizeof(value), SDB_UNQUOTED) < 0)
+ status = 0;
+ else if (! regexec(®ex, value, 0, NULL, 0))
+ status = 1;
+ }
+
+ if (free_regex)
+ regfree(®ex);
+ sdb_data_free_datum(&v);
+ if (m->type == MATCHER_NREGEX)
+ return !status;
+ return status;
+} /* match_regex */
+
+static int
+match_isnull(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
+{
+ sdb_data_t v = SDB_DATA_INIT;
+ int status;
+
+ assert((m->type == MATCHER_ISNULL) || (m->type == MATCHER_ISNNULL));
+
+ /* TODO: this might hide real errors;
+ * improve error reporting and propagation */
+ if (sdb_store_expr_eval(ISNULL_M(m)->expr, obj, &v, filter)
+ || sdb_data_isnull(&v))
+ status = 1;
+ else
+ status = 0;
+
+ sdb_data_free_datum(&v);
+ if (m->type == MATCHER_ISNNULL)
+ return !status;
+ return status;
+} /* match_isnull */
+
+typedef int (*matcher_cb)(sdb_store_matcher_t *, sdb_store_obj_t *,
+ sdb_store_matcher_t *);
+
+/* this array needs to be indexable by the matcher types;
+ * -> update the enum in store-private.h when updating this */
+static matcher_cb
+matchers[] = {
+ match_logical,
+ match_logical,
+ match_unary,
+ match_name,
+ match_child,
+ match_child,
+ match_child,
+ match_lt,
+ match_le,
+ match_eq,
+ match_ne,
+ match_ge,
+ match_gt,
+ match_in,
+ match_regex,
+ match_regex,
+ match_isnull,
+ match_isnull,
+};
/*
* private matcher types
*/
-/* initializes a name matcher consuming two elements from ap */
+/* initializes a string matcher consuming two elements from ap */
static int
-name_matcher_init(name_matcher_t *m, va_list ap)
+string_matcher_init(string_matcher_t *m, va_list ap)
{
const char *name = va_arg(ap, const char *);
const char *name_re = va_arg(ap, const char *);
return -1;
}
return 0;
-} /* name_matcher_init */
+} /* string_matcher_init */
static void
-name_matcher_destroy(name_matcher_t *m)
+string_matcher_destroy(string_matcher_t *m)
{
if (m->name)
free(m->name);
regfree(m->name_re);
free(m->name_re);
}
-} /* name_matcher_destroy */
+} /* string_matcher_destroy */
-/* initializes an object matcher consuming two elements from ap */
+/* initializes a name matcher */
static int
-obj_matcher_init(sdb_object_t *obj, va_list ap)
+name_matcher_init(sdb_object_t *obj, va_list ap)
{
- obj_matcher_t *m = OBJ_M(obj);
- return name_matcher_init(&m->name, ap);
-} /* obj_matcher_init */
+ name_matcher_t *m = NAME_M(obj);
+ M(obj)->type = MATCHER_NAME;
+ return string_matcher_init(&m->name, ap);
+} /* name_matcher_init */
static void
-obj_matcher_destroy(sdb_object_t *obj)
+name_matcher_destroy(sdb_object_t *obj)
{
- obj_matcher_t *m = OBJ_M(obj);
- name_matcher_destroy(&m->name);
-} /* obj_matcher_destroy */
+ name_matcher_t *m = NAME_M(obj);
+ string_matcher_destroy(&m->name);
+} /* name_matcher_destroy */
static int
-attr_matcher_init(sdb_object_t *obj, va_list ap)
+op_matcher_init(sdb_object_t *obj, va_list ap)
{
- attr_matcher_t *attr = ATTR_M(obj);
- int status;
+ M(obj)->type = va_arg(ap, int);
+ if ((M(obj)->type != MATCHER_OR) && (M(obj)->type != MATCHER_AND))
+ return -1;
- M(obj)->type = MATCHER_ATTR;
+ OP_M(obj)->left = va_arg(ap, sdb_store_matcher_t *);
+ sdb_object_ref(SDB_OBJ(OP_M(obj)->left));
+ OP_M(obj)->right = va_arg(ap, sdb_store_matcher_t *);
+ sdb_object_ref(SDB_OBJ(OP_M(obj)->right));
- status = obj_matcher_init(obj, ap);
- if (! status)
- status = name_matcher_init(&attr->value, ap);
- return status;
-} /* attr_matcher_init */
+ if ((! OP_M(obj)->left) || (! OP_M(obj)->right))
+ return -1;
+ return 0;
+} /* op_matcher_init */
static void
-attr_matcher_destroy(sdb_object_t *obj)
+op_matcher_destroy(sdb_object_t *obj)
{
- attr_matcher_t *attr = ATTR_M(obj);
-
- obj_matcher_destroy(obj);
- name_matcher_destroy(&attr->value);
-} /* attr_matcher_destroy */
+ if (OP_M(obj)->left)
+ sdb_object_deref(SDB_OBJ(OP_M(obj)->left));
+ if (OP_M(obj)->right)
+ sdb_object_deref(SDB_OBJ(OP_M(obj)->right));
+} /* op_matcher_destroy */
static int
-service_matcher_init(sdb_object_t *obj, va_list ap)
+child_matcher_init(sdb_object_t *obj, va_list ap)
{
- attr_matcher_t *attr;
- int status;
-
- M(obj)->type = MATCHER_SERVICE;
-
- status = obj_matcher_init(obj, ap);
- if (status)
- return status;
+ M(obj)->type = va_arg(ap, int);
+ CHILD_M(obj)->m = va_arg(ap, sdb_store_matcher_t *);
- attr = va_arg(ap, attr_matcher_t *);
+ if (! CHILD_M(obj)->m)
+ return -1;
- sdb_object_ref(SDB_OBJ(attr));
- SERVICE_M(obj)->attr = attr;
+ sdb_object_ref(SDB_OBJ(CHILD_M(obj)->m));
return 0;
-} /* service_matcher_init */
+} /* child_matcher_init */
static void
-service_matcher_destroy(sdb_object_t *obj)
+child_matcher_destroy(sdb_object_t *obj)
{
- obj_matcher_destroy(obj);
- sdb_object_deref(SDB_OBJ(SERVICE_M(obj)->attr));
-} /* service_matcher_destroy */
+ sdb_object_deref(SDB_OBJ(CHILD_M(obj)->m));
+} /* child_matcher_destroy */
static int
-host_matcher_init(sdb_object_t *obj, va_list ap)
+cmp_matcher_init(sdb_object_t *obj, va_list ap)
{
- service_matcher_t *service;
- attr_matcher_t *attr;
- int status;
-
- M(obj)->type = MATCHER_HOST;
-
- status = obj_matcher_init(obj, ap);
- if (status)
- return status;
+ M(obj)->type = va_arg(ap, int);
- service = va_arg(ap, service_matcher_t *);
- attr = va_arg(ap, attr_matcher_t *);
+ CMP_M(obj)->left = va_arg(ap, sdb_store_expr_t *);
+ sdb_object_ref(SDB_OBJ(CMP_M(obj)->left));
+ CMP_M(obj)->right = va_arg(ap, sdb_store_expr_t *);
+ sdb_object_ref(SDB_OBJ(CMP_M(obj)->right));
- sdb_object_ref(SDB_OBJ(service));
- HOST_M(obj)->service = service;
- sdb_object_ref(SDB_OBJ(attr));
- HOST_M(obj)->attr = attr;
+ if ((! CMP_M(obj)->left) || (! CMP_M(obj)->right))
+ return -1;
return 0;
-} /* host_matcher_init */
+} /* cmp_matcher_init */
static void
-host_matcher_destroy(sdb_object_t *obj)
+cmp_matcher_destroy(sdb_object_t *obj)
{
- obj_matcher_destroy(obj);
- sdb_object_deref(SDB_OBJ(HOST_M(obj)->service));
- sdb_object_deref(SDB_OBJ(HOST_M(obj)->attr));
-} /* host_matcher_destroy */
+ sdb_object_deref(SDB_OBJ(CMP_M(obj)->left));
+ sdb_object_deref(SDB_OBJ(CMP_M(obj)->right));
+} /* cmp_matcher_destroy */
static int
-op_matcher_init(sdb_object_t *obj, va_list ap)
+uop_matcher_init(sdb_object_t *obj, va_list ap)
{
M(obj)->type = va_arg(ap, int);
- if ((M(obj)->type != MATCHER_OR) && (M(obj)->type != MATCHER_AND))
+ if (M(obj)->type != MATCHER_NOT)
return -1;
- OP_M(obj)->left = va_arg(ap, sdb_store_matcher_t *);
- sdb_object_ref(SDB_OBJ(OP_M(obj)->left));
- OP_M(obj)->right = va_arg(ap, sdb_store_matcher_t *);
- sdb_object_ref(SDB_OBJ(OP_M(obj)->right));
+ UOP_M(obj)->op = va_arg(ap, sdb_store_matcher_t *);
+ sdb_object_ref(SDB_OBJ(UOP_M(obj)->op));
- if ((! OP_M(obj)->left) || (! OP_M(obj)->right))
+ if (! UOP_M(obj)->op)
return -1;
return 0;
-} /* op_matcher_init */
+} /* uop_matcher_init */
static void
-op_matcher_destroy(sdb_object_t *obj)
+uop_matcher_destroy(sdb_object_t *obj)
{
- if (OP_M(obj)->left)
- sdb_object_deref(SDB_OBJ(OP_M(obj)->left));
- if (OP_M(obj)->right)
- sdb_object_deref(SDB_OBJ(OP_M(obj)->right));
-} /* op_matcher_destroy */
+ if (UOP_M(obj)->op)
+ sdb_object_deref(SDB_OBJ(UOP_M(obj)->op));
+} /* uop_matcher_destroy */
-static sdb_type_t attr_type = {
- /* size = */ sizeof(attr_matcher_t),
- /* init = */ attr_matcher_init,
- /* destroy = */ attr_matcher_destroy,
-};
+static int
+isnull_matcher_init(sdb_object_t *obj, va_list ap)
+{
+ M(obj)->type = va_arg(ap, int);
+ if ((M(obj)->type != MATCHER_ISNULL) && (M(obj)->type != MATCHER_ISNNULL))
+ return -1;
-static sdb_type_t service_type = {
- /* size = */ sizeof(service_matcher_t),
- /* init = */ service_matcher_init,
- /* destroy = */ service_matcher_destroy,
-};
+ ISNULL_M(obj)->expr = va_arg(ap, sdb_store_expr_t *);
+ sdb_object_ref(SDB_OBJ(ISNULL_M(obj)->expr));
+ return 0;
+} /* isnull_matcher_init */
-static sdb_type_t host_type = {
- /* size = */ sizeof(host_matcher_t),
- /* init = */ host_matcher_init,
- /* destroy = */ host_matcher_destroy,
+static void
+isnull_matcher_destroy(sdb_object_t *obj)
+{
+ sdb_object_deref(SDB_OBJ(ISNULL_M(obj)->expr));
+ ISNULL_M(obj)->expr = NULL;
+} /* isnull_matcher_destroy */
+
+static sdb_type_t name_type = {
+ /* size = */ sizeof(name_matcher_t),
+ /* init = */ name_matcher_init,
+ /* destroy = */ name_matcher_destroy,
};
static sdb_type_t op_type = {
/* destroy = */ op_matcher_destroy,
};
+static sdb_type_t uop_type = {
+ /* size = */ sizeof(uop_matcher_t),
+ /* init = */ uop_matcher_init,
+ /* destroy = */ uop_matcher_destroy,
+};
+
+static sdb_type_t child_type = {
+ /* size = */ sizeof(child_matcher_t),
+ /* init = */ child_matcher_init,
+ /* destroy = */ child_matcher_destroy,
+};
+
+static sdb_type_t cmp_type = {
+ /* size = */ sizeof(cmp_matcher_t),
+ /* init = */ cmp_matcher_init,
+ /* destroy = */ cmp_matcher_destroy,
+};
+
+static sdb_type_t isnull_type = {
+ /* size = */ sizeof(isnull_matcher_t),
+ /* init = */ isnull_matcher_init,
+ /* destroy = */ isnull_matcher_destroy,
+};
+
/*
* public API
*/
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_name_matcher(int type, const char *name, _Bool re)
{
- return M(sdb_object_create("attr-matcher", attr_type,
- attr_name, attr_name_re, attr_value, attr_value_re));
-} /* sdb_store_attr_matcher */
+ sdb_store_matcher_t *m;
+
+ if (re)
+ m = M(sdb_object_create("name-matcher", name_type, NULL, name));
+ else
+ m = M(sdb_object_create("name-matcher", name_type, name, NULL));
+
+ if (! m)
+ return NULL;
+
+ NAME_M(m)->obj_type = type;
+ return m;
+} /* sdb_store_name_matcher */
+
+sdb_store_matcher_t *
+sdb_store_child_matcher(int type, sdb_store_matcher_t *m)
+{
+ if (type == SDB_SERVICE)
+ type = MATCHER_SERVICE;
+ else if (type == SDB_METRIC)
+ type = MATCHER_METRIC;
+ else if (type == SDB_ATTRIBUTE)
+ type = MATCHER_ATTRIBUTE;
+ else
+ return NULL;
+ return M(sdb_object_create("any-matcher", child_type, type, m));
+} /* sdb_store_child_matcher */
+
+sdb_store_matcher_t *
+sdb_store_lt_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
+{
+ return M(sdb_object_create("lt-matcher", cmp_type,
+ MATCHER_LT, left, right));
+} /* sdb_store_lt_matcher */
+
+sdb_store_matcher_t *
+sdb_store_le_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
+{
+ return M(sdb_object_create("le-matcher", cmp_type,
+ MATCHER_LE, left, right));
+} /* sdb_store_le_matcher */
+
+sdb_store_matcher_t *
+sdb_store_eq_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
+{
+ return M(sdb_object_create("eq-matcher", cmp_type,
+ MATCHER_EQ, left, right));
+} /* sdb_store_eq_matcher */
+
+sdb_store_matcher_t *
+sdb_store_ne_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
+{
+ return M(sdb_object_create("ne-matcher", cmp_type,
+ MATCHER_NE, left, right));
+} /* sdb_store_ne_matcher */
+
+sdb_store_matcher_t *
+sdb_store_ge_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
+{
+ return M(sdb_object_create("ge-matcher", cmp_type,
+ MATCHER_GE, left, right));
+} /* sdb_store_ge_matcher */
+
+sdb_store_matcher_t *
+sdb_store_gt_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
+{
+ return M(sdb_object_create("gt-matcher", cmp_type,
+ MATCHER_GT, left, right));
+} /* sdb_store_gt_matcher */
+
+sdb_store_matcher_t *
+sdb_store_in_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
+{
+ return M(sdb_object_create("in-matcher", cmp_type,
+ MATCHER_IN, left, right));
+} /* sdb_store_in_matcher */
+
+sdb_store_matcher_t *
+sdb_store_regex_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
+{
+ if (! right->type) {
+ if ((right->data.type != SDB_TYPE_STRING)
+ && (right->data.type != SDB_TYPE_REGEX))
+ return NULL;
+
+ if (right->data.type == SDB_TYPE_STRING) {
+ char *raw = right->data.data.string;
+ if (sdb_data_parse(raw, SDB_TYPE_REGEX, &right->data))
+ return NULL;
+ free(raw);
+ }
+ }
+ return M(sdb_object_create("regex-matcher", cmp_type,
+ MATCHER_REGEX, left, right));
+} /* sdb_store_regex_matcher */
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_nregex_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
{
- return M(sdb_object_create("service-matcher", service_type,
- service_name, service_name_re, attr_matcher));
-} /* sdb_store_service_matcher */
+ sdb_store_matcher_t *m = sdb_store_regex_matcher(left, right);
+ if (! m)
+ return NULL;
+ m->type = MATCHER_NREGEX;
+ return m;
+} /* sdb_store_nregex_matcher */
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_isnull_matcher(sdb_store_expr_t *expr)
{
- return M(sdb_object_create("host-matcher", host_type,
- host_name, host_name_re, service_matcher, attr_matcher));
-} /* sdb_store_host_matcher */
+ return M(sdb_object_create("isnull-matcher", isnull_type,
+ MATCHER_ISNULL, expr));
+} /* sdb_store_isnull_matcher */
+
+sdb_store_matcher_t *
+sdb_store_isnnull_matcher(sdb_store_expr_t *expr)
+{
+ return M(sdb_object_create("isnull-matcher", isnull_type,
+ MATCHER_ISNNULL, expr));
+} /* sdb_store_isnnull_matcher */
+
+sdb_store_matcher_op_cb
+sdb_store_parse_matcher_op(const char *op)
+{
+ if (! strcasecmp(op, "<"))
+ return sdb_store_lt_matcher;
+ else if (! strcasecmp(op, "<="))
+ return sdb_store_le_matcher;
+ else if (! strcasecmp(op, "="))
+ return sdb_store_eq_matcher;
+ else if (! strcasecmp(op, "!="))
+ return sdb_store_ne_matcher;
+ else if (! strcasecmp(op, ">="))
+ return sdb_store_ge_matcher;
+ else if (! strcasecmp(op, ">"))
+ return sdb_store_gt_matcher;
+ else if (! strcasecmp(op, "=~"))
+ return sdb_store_regex_matcher;
+ else if (! strcasecmp(op, "!~"))
+ return sdb_store_nregex_matcher;
+ return NULL;
+} /* sdb_store_parse_matcher_op */
+
+int
+sdb_store_parse_object_type_plural(const char *name)
+{
+ if (! strcasecmp(name, "hosts"))
+ return SDB_HOST;
+ else if (! strcasecmp(name, "services"))
+ return SDB_SERVICE;
+ else if (! strcasecmp(name, "metrics"))
+ return SDB_METRIC;
+ return -1;
+} /* sdb_store_parse_object_type_plural */
+
+int
+sdb_store_parse_field_name(const char *name)
+{
+ if (! strcasecmp(name, "name"))
+ return SDB_FIELD_NAME;
+ else if (! strcasecmp(name, "last_update"))
+ return SDB_FIELD_LAST_UPDATE;
+ else if (! strcasecmp(name, "age"))
+ return SDB_FIELD_AGE;
+ else if (! strcasecmp(name, "interval"))
+ return SDB_FIELD_INTERVAL;
+ else if (! strcasecmp(name, "backend"))
+ return SDB_FIELD_BACKEND;
+ return -1;
+} /* sdb_store_parse_field_name */
+
+static sdb_store_matcher_t *
+maybe_inv_matcher(sdb_store_matcher_t *m, _Bool inv)
+{
+ sdb_store_matcher_t *tmp;
+
+ if ((! m) || (! inv))
+ return m;
+
+ tmp = sdb_store_inv_matcher(m);
+ /* pass ownership to the inverse matcher */
+ sdb_object_deref(SDB_OBJ(m));
+ return tmp;
+} /* maybe_inv_matcher */
+
+sdb_store_matcher_t *
+sdb_store_matcher_parse_cmp(const char *obj_type,
+ const char *op, sdb_store_expr_t *expr)
+{
+ int type = -1;
+ _Bool inv = 0;
+ _Bool re = 0;
+
+ sdb_data_t value = SDB_DATA_INIT;
+ sdb_store_matcher_t *m = NULL;
+
+ if (! strcasecmp(obj_type, "host"))
+ type = SDB_HOST;
+ else if (! strcasecmp(obj_type, "service"))
+ type = SDB_SERVICE;
+ else if (! strcasecmp(obj_type, "metric"))
+ type = SDB_METRIC;
+ else if (! strcasecmp(obj_type, "attribute"))
+ type = SDB_ATTRIBUTE;
+ else
+ return NULL;
+
+ /* XXX: this code sucks! */
+ if (! strcasecmp(op, "=")) {
+ /* nothing to do */
+ }
+ else if (! strcasecmp(op, "!=")) {
+ inv = 1;
+ }
+ else if (! strcasecmp(op, "=~")) {
+ re = 1;
+ }
+ else if (! strcasecmp(op, "!~")) {
+ inv = 1;
+ re = 1;
+ }
+ else
+ return NULL;
+
+ if (! expr)
+ return NULL;
+
+ if (sdb_store_expr_eval(expr, /* obj */ NULL, &value, /* filter */ NULL)
+ || (value.type != SDB_TYPE_STRING)) {
+ sdb_data_free_datum(&value);
+ return NULL;
+ }
+
+ m = sdb_store_name_matcher(type, value.data.string, re);
+ sdb_data_free_datum(&value);
+ return maybe_inv_matcher(m, inv);
+} /* sdb_store_matcher_parse_cmp */
sdb_store_matcher_t *
sdb_store_dis_matcher(sdb_store_matcher_t *left, sdb_store_matcher_t *right)
left, right));
} /* sdb_store_con_matcher */
+sdb_store_matcher_t *
+sdb_store_inv_matcher(sdb_store_matcher_t *m)
+{
+ return M(sdb_object_create("inv-matcher", uop_type, MATCHER_NOT, m));
+} /* sdb_store_inv_matcher */
+
int
-sdb_store_matcher_matches(sdb_store_matcher_t *m, sdb_store_base_t *obj)
+sdb_store_matcher_matches(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
{
+ if (filter && (! sdb_store_matcher_matches(filter, obj, NULL)))
+ return 0;
+
/* "NULL" always matches */
if ((! m) || (! obj))
- return 0;
+ return 1;
if ((m->type < 0) || ((size_t)m->type >= SDB_STATIC_ARRAY_LEN(matchers)))
- return -1;
+ return 0;
- return matchers[m->type](m, obj);
+ return matchers[m->type](m, obj, filter);
} /* sdb_store_matcher_matches */
+int
+sdb_store_scan(sdb_store_matcher_t *m, sdb_store_matcher_t *filter,
+ sdb_store_lookup_cb cb, void *user_data)
+{
+ scan_iter_data_t data = { m, filter, cb, user_data };
+
+ if (! cb)
+ return -1;
+ return sdb_store_iterate(scan_iter, &data);
+} /* sdb_store_scan */
+
/* vim: set tw=78 sw=4 ts=4 noexpandtab : */