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index 180d17931d2c603fb0e295b5b06f4c9637d5cb8a..3d509b0511f026276cfa55194aafad34435164e2 100644 (file)
--- a/src/core/store_lookup.c
+++ b/src/core/store_lookup.c
#include <limits.h>
/*
- * private data types
- */
-
-typedef struct {
- sdb_store_matcher_t *m;
- sdb_store_matcher_t *filter;
- sdb_store_lookup_cb cb;
- void *user_data;
-} scan_iter_data_t;
-
-/*
- * private helper functions
+ * matcher implementations
*/
-static int
-scan_iter(sdb_store_obj_t *obj, void *user_data)
-{
- scan_iter_data_t *d = user_data;
-
- if (sdb_store_matcher_matches(d->m, obj, d->filter))
- return d->cb(obj, d->user_data);
- return 0;
-} /* scan_iter */
-
/*
- * matcher implementations
+ * cmp_expr:
+ * Compare two values using the specified matcher operator. If strcmp_fallback
+ * is enabled, compare the string values in case of a type mismatch.
*/
-
static int
-match_string(string_matcher_t *m, const char *name)
+cmp_value(int op, sdb_data_t *v1, sdb_data_t *v2, _Bool strcmp_fallback)
{
- if ((! m->name) && (! m->name_re))
- return 1;
+ int status;
- if (! name)
- name = "";
+ 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 if (! strcmp_fallback)
+ status = INT_MAX;
+ else
+ status = sdb_data_strcmp(v1, v2);
- if (m->name && strcasecmp(m->name, name))
+ if (status == INT_MAX)
return 0;
- if (m->name_re && regexec(m->name_re, name,
- /* matches */ 0, NULL, /* flags = */ 0))
- return 0;
- return 1;
-} /* match_string */
+ else if (op == MATCHER_LT)
+ return status < 0;
+ else if (op == MATCHER_LE)
+ return status <= 0;
+ else if (op == MATCHER_EQ)
+ return status == 0;
+ else if (op == MATCHER_NE)
+ return status != 0;
+ else if (op == MATCHER_GE)
+ return status >= 0;
+ else if (op == MATCHER_GT)
+ return status > 0;
+ return 0;
+} /* cmp_value */
static int
match_logical(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
} /* match_unary */
static int
-match_name(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+match_iter(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
sdb_store_matcher_t *filter)
{
sdb_avltree_iter_t *iter = NULL;
- int status = 0;
+ int status;
+ int all = (int)(m->type == MATCHER_ALL);
- assert(m->type == MATCHER_NAME);
+ assert((m->type == MATCHER_ANY) || (m->type == MATCHER_ALL));
- 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;
-
- switch (NAME_M(m)->obj_type) {
- case SDB_SERVICE:
+ if (obj->type == SDB_HOST) {
+ if (ITER_M(m)->type == SDB_SERVICE)
iter = sdb_avltree_get_iter(HOST(obj)->services);
- break;
- case SDB_METRIC:
+ else if (ITER_M(m)->type == SDB_METRIC)
iter = sdb_avltree_get_iter(HOST(obj)->metrics);
- break;
- case SDB_ATTRIBUTE:
+ else if (ITER_M(m)->type == SDB_ATTRIBUTE)
iter = sdb_avltree_get_iter(HOST(obj)->attributes);
- break;
+ } else if (obj->type == SDB_SERVICE) {
+ if (ITER_M(m)->type == SDB_ATTRIBUTE)
+ iter = sdb_avltree_get_iter(SVC(obj)->attributes);
+ } else if (obj->type == SDB_METRIC) {
+ if (ITER_M(m)->type == SDB_ATTRIBUTE)
+ iter = sdb_avltree_get_iter(METRIC(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 (match_string(&NAME_M(m)->name, child->name)) {
- status = 1;
- break;
- }
- }
- sdb_avltree_iter_destroy(iter);
- return status;
-} /* match_name */
-
-static int
-match_child(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
- sdb_store_matcher_t *filter)
-{
- sdb_avltree_iter_t *iter = NULL;
- int status;
- int all = 0;
-
- assert((m->type == MATCHER_SERVICE)
- || (m->type == MATCHER_METRIC)
- || (m->type == MATCHER_ATTRIBUTE));
-
- /* TODO: support all object types */
- if (obj->type != SDB_HOST)
- return 0;
-
- /* negated matchers should only match if the respective positive matchers
- * do not match; that is if the negated matcher matchers *all* children */
- if ((CHILD_M(m)->m->type == MATCHER_NE)
- || (CHILD_M(m)->m->type == MATCHER_NREGEX))
- all = 1;
-
- 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 == MATCHER_ATTRIBUTE)
- iter = sdb_avltree_get_iter(HOST(obj)->attributes);
-
status = all;
while (sdb_avltree_iter_has_next(iter)) {
sdb_store_obj_t *child = STORE_OBJ(sdb_avltree_iter_get_next(iter));
if (filter && (! sdb_store_matcher_matches(filter, child, NULL)))
continue;
- if (sdb_store_matcher_matches(CHILD_M(m)->m, child, filter)) {
+ if (sdb_store_matcher_matches(ITER_M(m)->m, child, filter)) {
if (! all) {
status = 1;
break;
}
sdb_avltree_iter_destroy(iter);
return status;
-} /* match_child */
+} /* match_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)
+match_cmp(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
{
+ sdb_store_expr_t *e1 = CMP_M(m)->left;
+ sdb_store_expr_t *e2 = CMP_M(m)->right;
sdb_data_t v1 = SDB_DATA_INIT, v2 = SDB_DATA_INIT;
int status;
+ assert((m->type == MATCHER_LT)
+ || (m->type == MATCHER_LE)
+ || (m->type == MATCHER_EQ)
+ || (m->type == MATCHER_NE)
+ || (m->type == MATCHER_GE)
+ || (m->type == MATCHER_GT));
+
if (sdb_store_expr_eval(e1, obj, &v1, filter))
- return INT_MAX;
+ return 0;
if (sdb_store_expr_eval(e2, obj, &v2, filter)) {
sdb_data_free_datum(&v1);
- return INT_MAX;
+ return 0;
}
- 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);
+ status = cmp_value(m->type, &v1, &v2,
+ (e1->data_type) < 0 || (e2->data_type < 0));
sdb_data_free_datum(&v1);
sdb_data_free_datum(&v2);
return status;
-} /* cmp_expr */
-
-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_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 */
-
-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 */
-
-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 */
-
-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_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 */
+} /* match_cmp */
static int
match_in(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
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_iter,
+ match_iter,
+ match_cmp,
+ match_cmp,
+ match_cmp,
+ match_cmp,
+ match_cmp,
+ match_cmp,
match_in,
match_regex,
match_regex,
* private matcher types
*/
-/* initializes a string matcher consuming two elements from ap */
-static int
-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 *);
-
- if (name) {
- m->name = strdup(name);
- if (! m->name)
- return -1;
- }
- if (name_re) {
- m->name_re = malloc(sizeof(*m->name_re));
- if (! m->name_re)
- return -1;
- if (regcomp(m->name_re, name_re, REG_EXTENDED | REG_ICASE | REG_NOSUB))
- return -1;
- }
- return 0;
-} /* string_matcher_init */
-
-static void
-string_matcher_destroy(string_matcher_t *m)
-{
- if (m->name)
- free(m->name);
- if (m->name_re) {
- regfree(m->name_re);
- free(m->name_re);
- }
-} /* string_matcher_destroy */
-
-/* initializes a name matcher */
-static int
-name_matcher_init(sdb_object_t *obj, va_list ap)
-{
- name_matcher_t *m = NAME_M(obj);
- M(obj)->type = MATCHER_NAME;
- return string_matcher_init(&m->name, ap);
-} /* name_matcher_init */
-
-static void
-name_matcher_destroy(sdb_object_t *obj)
-{
- name_matcher_t *m = NAME_M(obj);
- string_matcher_destroy(&m->name);
-} /* name_matcher_destroy */
-
static int
op_matcher_init(sdb_object_t *obj, va_list ap)
{
} /* op_matcher_destroy */
static int
-child_matcher_init(sdb_object_t *obj, va_list ap)
+iter_matcher_init(sdb_object_t *obj, va_list ap)
{
M(obj)->type = va_arg(ap, int);
- CHILD_M(obj)->m = va_arg(ap, sdb_store_matcher_t *);
+ ITER_M(obj)->type = va_arg(ap, int);
+ ITER_M(obj)->m = va_arg(ap, sdb_store_matcher_t *);
- if (! CHILD_M(obj)->m)
+ if (! ITER_M(obj)->m)
return -1;
- sdb_object_ref(SDB_OBJ(CHILD_M(obj)->m));
+ sdb_object_ref(SDB_OBJ(ITER_M(obj)->m));
return 0;
-} /* child_matcher_init */
+} /* iter_matcher_init */
static void
-child_matcher_destroy(sdb_object_t *obj)
+iter_matcher_destroy(sdb_object_t *obj)
{
- sdb_object_deref(SDB_OBJ(CHILD_M(obj)->m));
-} /* child_matcher_destroy */
+ sdb_object_deref(SDB_OBJ(ITER_M(obj)->m));
+} /* iter_matcher_destroy */
static int
cmp_matcher_init(sdb_object_t *obj, va_list ap)
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 = {
/* size = */ sizeof(op_matcher_t),
/* init = */ op_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 iter_type = {
+ /* size = */ sizeof(iter_matcher_t),
+ /* init = */ iter_matcher_init,
+ /* destroy = */ iter_matcher_destroy,
};
static sdb_type_t cmp_type = {
*/
sdb_store_matcher_t *
-sdb_store_name_matcher(int type, const char *name, _Bool re)
+sdb_store_any_matcher(int type, sdb_store_matcher_t *m)
{
- 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)
+ if ((type != SDB_SERVICE) && (type != SDB_METRIC)
+ && (type != SDB_ATTRIBUTE))
return NULL;
-
- NAME_M(m)->obj_type = type;
- return m;
-} /* sdb_store_name_matcher */
+ return M(sdb_object_create("any-matcher", iter_type,
+ MATCHER_ANY, type, m));
+} /* sdb_store_any_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
+sdb_store_all_matcher(int type, sdb_store_matcher_t *m)
+{
+ if ((type != SDB_SERVICE) && (type != SDB_METRIC)
+ && (type != SDB_ATTRIBUTE))
return NULL;
- return M(sdb_object_create("any-matcher", child_type, type, m));
-} /* sdb_store_child_matcher */
+ return M(sdb_object_create("all-matcher", iter_type,
+ MATCHER_ALL, type, m));
+} /* sdb_store_all_matcher */
sdb_store_matcher_t *
sdb_store_lt_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
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)
{
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 : */