index f2d8cc7dd03bc2fd2cdc044af397ec9fecd0cfda..302736754ed8434421596b0801d08cc5ad33f27e 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
*/
typedef struct {
sdb_store_matcher_t *m;
+ sdb_store_matcher_t *filter;
sdb_store_lookup_cb cb;
void *user_data;
-} lookup_iter_data_t;
+} scan_iter_data_t;
/*
* private helper functions
*/
static int
-lookup_iter(sdb_store_base_t *obj, void *user_data)
+scan_iter(sdb_store_obj_t *obj, void *user_data)
{
- lookup_iter_data_t *d = user_data;
+ scan_iter_data_t *d = user_data;
- if (sdb_store_matcher_matches(d->m, obj))
+ if (sdb_store_matcher_matches(d->m, obj, d->filter))
return d->cb(obj, d->user_data);
return 0;
-} /* lookup_iter */
+} /* scan_iter */
+
+static sdb_attribute_t *
+attr_get(sdb_host_t *host, const char *name, sdb_store_matcher_t *filter)
+{
+ sdb_avltree_iter_t *iter = NULL;
+ sdb_attribute_t *attr = NULL;
+
+ iter = sdb_avltree_get_iter(host->attributes);
+ while (sdb_avltree_iter_has_next(iter)) {
+ sdb_attribute_t *a = ATTR(sdb_avltree_iter_get_next(iter));
+
+ if (strcasecmp(name, SDB_OBJ(a)->name))
+ continue;
+
+ assert(STORE_OBJ(a)->type == SDB_ATTRIBUTE);
+ attr = a;
+ break;
+ }
+ sdb_avltree_iter_destroy(iter);
+
+ if (filter && (! sdb_store_matcher_matches(filter, STORE_OBJ(attr),
+ NULL)))
+ return NULL;
+ return attr;
+} /* attr_get */
/*
- * matcher implementations
+ * conditional implementations
*/
static int
-match_logical(sdb_store_matcher_t *m, sdb_store_base_t *obj);
-static int
-match_unary(sdb_store_matcher_t *m, sdb_store_base_t *obj);
+attr_cmp(sdb_store_obj_t *obj, sdb_store_cond_t *cond,
+ sdb_store_matcher_t *filter)
+{
+ sdb_attribute_t *attr;
+ sdb_data_t value = SDB_DATA_INIT;
+ int status;
+
+ if (obj->type != SDB_HOST)
+ return INT_MAX;
+
+ if (sdb_store_expr_eval(ATTR_C(cond)->expr, obj, &value))
+ return INT_MAX;
-/* specific matchers */
+ attr = attr_get(HOST(obj), ATTR_C(cond)->name, filter);
+ if (! attr)
+ status = INT_MAX;
+ else if (attr->value.type != value.type)
+ status = sdb_data_strcmp(&attr->value, &value);
+ else
+ status = sdb_data_cmp(&attr->value, &value);
+ sdb_data_free_datum(&value);
+ return status;
+} /* attr_cmp */
static int
-match_obj_name(name_matcher_t *m, const char *name)
+obj_cmp(sdb_store_obj_t *obj, sdb_store_cond_t *cond,
+ sdb_store_matcher_t __attribute__((unused)) *filter)
{
- assert(m);
+ sdb_data_t obj_value = SDB_DATA_INIT;
+ sdb_data_t value = SDB_DATA_INIT;
+ int status;
+
+ if (sdb_store_expr_eval(OBJ_C(cond)->expr, obj, &value))
+ return INT_MAX;
+ if (OBJ_C(cond)->field == SDB_FIELD_BACKEND) {
+ /* this implementation is not actually a conditional but rather checks
+ * for equality (or rather, existence) only */
+ size_t i;
+
+ if (value.type != SDB_TYPE_STRING)
+ return INT_MAX;
+
+ status = INT_MAX;
+ for (i = 0; i < obj->backends_num; ++i) {
+ if (! strcasecmp(obj->backends[i], value.data.string)) {
+ status = 0;
+ break;
+ }
+ }
+ sdb_data_free_datum(&value);
+ return status;
+ }
+
+ if (sdb_store_get_field(obj, OBJ_C(cond)->field, &obj_value))
+ return INT_MAX;
+ if (obj_value.type != value.type) {
+ sdb_data_free_datum(&obj_value);
+ sdb_data_free_datum(&value);
+ return INT_MAX;
+ }
+
+ status = sdb_data_cmp(&obj_value, &value);
+ sdb_data_free_datum(&obj_value);
+ sdb_data_free_datum(&value);
+ return status;
+} /* obj_cmp */
+
+/*
+ * matcher implementations
+ */
+
+static int
+match_string(string_matcher_t *m, const char *name)
+{
if ((! m->name) && (! m->name_re))
return 1;
/* matches */ 0, NULL, /* flags = */ 0))
return 0;
return 1;
-} /* match_obj_name */
+} /* match_string */
-static char *
-obj_name_tostring(name_matcher_t *m, char *buf, size_t buflen)
-{
- snprintf(buf, buflen, "{ %s%s%s, %p }",
- m->name ? "'" : "", m->name ? m->name : "NULL", m->name ? "'" : "",
- m->name_re);
- return buf;
-} /* obj_name_tostring */
-
-static char *
-logical_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
-{
- char left[buflen + 1], right[buflen + 1];
-
- if (! m) {
- /* this should not happen */
- snprintf(buf, buflen, "()");
- return buf;
- }
-
- assert((m->type == MATCHER_OR) || (m->type == MATCHER_AND));
- snprintf(buf, buflen, "(%s, %s, %s)",
- m->type == MATCHER_OR ? "OR" : "AND",
- sdb_store_matcher_tostring(OP_M(m)->left, left, sizeof(left)),
- sdb_store_matcher_tostring(OP_M(m)->right, right, sizeof(right)));
- return buf;
-} /* logical_tostring */
-
-static char *
-unary_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
+static int
+match_logical(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
{
- char op[buflen + 1];
-
- if (! m) {
- /* this should not happen */
- snprintf(buf, buflen, "()");
- return buf;
- }
-
- assert(m->type == MATCHER_NOT);
- snprintf(buf, buflen, "(NOT, %s)",
- sdb_store_matcher_tostring(UOP_M(m)->op, op, sizeof(op)));
- return buf;
-} /* unary_tostring */
+ int status;
-static char *
-name_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
-{
- char name[buflen + 1];
- assert(m->type == MATCHER_NAME);
- snprintf(buf, buflen, "OBJ[%s]{ NAME%s }",
- SDB_STORE_TYPE_TO_NAME(OBJ_M(m)->obj_type),
- obj_name_tostring(&OBJ_M(m)->name, name, sizeof(name)));
- return buf;
-} /* name_tostring */
+ assert((m->type == MATCHER_AND) || (m->type == MATCHER_OR));
+ assert(OP_M(m)->left && OP_M(m)->right);
-static char *
-attr_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
-{
- char value[buflen + 1];
+ status = sdb_store_matcher_matches(OP_M(m)->left, obj, filter);
- if (! m) {
- snprintf(buf, buflen, "ATTR{}");
- return buf;
- }
+ /* lazy evaluation */
+ if ((! status) && (m->type == MATCHER_AND))
+ return status;
+ else if (status && (m->type == MATCHER_OR))
+ return status;
- assert(m->type == MATCHER_ATTR);
- snprintf(buf, buflen, "ATTR[%s]{ VALUE%s }", ATTR_M(m)->name,
- obj_name_tostring(&ATTR_M(m)->value, value, sizeof(value)));
- return buf;
-} /* attr_tostring */
+ return sdb_store_matcher_matches(OP_M(m)->right, obj, filter);
+} /* match_logical */
-static char *
-host_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
+static int
+match_unary(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
{
- char name[buflen + 1], attr[buflen + 1];
-
- if (! m) {
- snprintf(buf, buflen, "HOST{}");
- return buf;
- }
+ assert(m->type == MATCHER_NOT);
+ assert(UOP_M(m)->op);
- assert(m->type == MATCHER_HOST);
- snprintf(buf, buflen, "HOST{ NAME%s, %s }",
- obj_name_tostring(&OBJ_M(m)->name, name, sizeof(name)),
- attr_tostring(SDB_STORE_MATCHER(HOST_M(m)->attr),
- attr, sizeof(attr)));
- return buf;
-} /* host_tostring */
+ return !sdb_store_matcher_matches(UOP_M(m)->op, obj, filter);
+} /* match_unary */
static int
-match_name(sdb_store_matcher_t *m, sdb_store_base_t *obj)
+match_name(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
{
- sdb_llist_iter_t *iter = NULL;
+ sdb_avltree_iter_t *iter = NULL;
int status = 0;
- assert(m && obj);
assert(m->type == MATCHER_NAME);
- if (obj->type != SDB_HOST)
+ 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 (OBJ_M(m)->obj_type) {
- case SDB_HOST:
- return match_obj_name(&OBJ_M(m)->name, obj->super.name);
- break;
+ switch (NAME_M(m)->obj_type) {
case SDB_SERVICE:
- iter = sdb_llist_get_iter(SDB_STORE_OBJ(obj)->children);
+ 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_llist_get_iter(SDB_STORE_OBJ(obj)->attributes);
+ iter = sdb_avltree_get_iter(HOST(obj)->attributes);
break;
}
- while (sdb_llist_iter_has_next(iter)) {
- sdb_store_base_t *child = STORE_BASE(sdb_llist_iter_get_next(iter));
- if (match_obj_name(&OBJ_M(m)->name, child->super.name)) {
+ 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);
+ sdb_avltree_iter_destroy(iter);
return status;
} /* match_name */
static int
-match_attr(sdb_store_matcher_t *m, sdb_store_base_t *obj)
+match_attr(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
{
- sdb_llist_iter_t *iter = NULL;
- int status = 0;
+ sdb_attribute_t *attr;
- assert(m && obj);
assert(m->type == MATCHER_ATTR);
+ assert(ATTR_M(m)->name);
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_attribute_t *attr = SDB_ATTR(sdb_llist_iter_get_next(iter));
+ attr = attr_get(HOST(obj), ATTR_M(m)->name, filter);
+ if (attr) {
char buf[sdb_data_strlen(&attr->value) + 1];
-
- if (ATTR_M(m)->name && strcasecmp(ATTR_M(m)->name, SDB_OBJ(attr)->name))
- continue;
-
if (sdb_data_format(&attr->value, buf, sizeof(buf), SDB_UNQUOTED) <= 0)
return 0;
- if (match_obj_name(&ATTR_M(m)->value, buf)) {
- status = 1;
- break;
- }
+ if (match_string(&ATTR_M(m)->value, buf))
+ return 1;
}
- sdb_llist_iter_destroy(iter);
- return status;
+ return 0;
} /* match_attr */
-/* match host specific values;
- * always call this function through match_obj() */
static int
-match_host(sdb_store_matcher_t *m, sdb_store_base_t *obj)
+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 = COND_M(m)->cond->cmp(obj, COND_M(m)->cond, filter);
+ return (status != INT_MAX) && (status < 0);
+} /* match_lt */
- assert(m && obj);
- assert(m->type == MATCHER_HOST);
-
- if (obj->type != SDB_HOST)
- return 0;
+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 = COND_M(m)->cond->cmp(obj, COND_M(m)->cond, filter);
+ return (status != INT_MAX) && (status <= 0);
+} /* match_le */
- status = match_obj_name(&OBJ_M(m)->name, obj->super.name);
- if (! status)
- return status;
+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 = COND_M(m)->cond->cmp(obj, COND_M(m)->cond, filter);
+ return (status != INT_MAX) && (! status);
+} /* match_eq */
- if (! HOST_M(m)->attr)
- return 1;
+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 = COND_M(m)->cond->cmp(obj, COND_M(m)->cond, filter);
+ return (status != INT_MAX) && (status >= 0);
+} /* match_ge */
- return match_attr(M(HOST_M(m)->attr), obj);
-} /* match_host */
+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 = COND_M(m)->cond->cmp(obj, COND_M(m)->cond, filter);
+ return (status != INT_MAX) && (status > 0);
+} /* match_gt */
-/* generic matchers */
+static int
+match_isnull(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
+ sdb_store_matcher_t *filter)
+{
+ assert(m->type == MATCHER_ISNULL);
+ if (obj->type != SDB_HOST)
+ return 0;
+ return attr_get(HOST(obj), ISNULL_M(m)->attr_name, filter) == NULL;
+} /* match_isnull */
-typedef int (*matcher_cb)(sdb_store_matcher_t *, sdb_store_base_t *);
+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[] = {
+static matcher_cb
+matchers[] = {
match_logical,
match_logical,
match_unary,
match_name,
match_attr,
- match_host,
+ match_lt,
+ match_le,
+ match_eq,
+ match_ge,
+ match_gt,
+ match_isnull,
};
-typedef char *(*matcher_tostring_cb)(sdb_store_matcher_t *, char *, size_t);
-
-static matcher_tostring_cb matchers_tostring[] = {
- logical_tostring,
- logical_tostring,
- unary_tostring,
- name_tostring,
- attr_tostring,
- host_tostring,
-};
+/*
+ * private conditional types
+ */
static int
-match_logical(sdb_store_matcher_t *m, sdb_store_base_t *obj)
+attr_cond_init(sdb_object_t *obj, va_list ap)
{
- int status;
+ const char *name = va_arg(ap, const char *);
+ sdb_store_expr_t *expr = va_arg(ap, sdb_store_expr_t *);
- assert(m && obj);
- assert(OP_M(m)->left && OP_M(m)->right);
+ if (! name)
+ return -1;
- 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;
+ SDB_STORE_COND(obj)->cmp = attr_cmp;
- return sdb_store_matcher_matches(OP_M(m)->right, obj);
-} /* match_logical */
+ ATTR_C(obj)->name = strdup(name);
+ if (! ATTR_C(obj)->name)
+ return -1;
+ ATTR_C(obj)->expr = expr;
+ sdb_object_ref(SDB_OBJ(expr));
+ return 0;
+} /* attr_cond_init */
+
+static void
+attr_cond_destroy(sdb_object_t *obj)
+{
+ if (ATTR_C(obj)->name)
+ free(ATTR_C(obj)->name);
+ sdb_object_deref(SDB_OBJ(ATTR_C(obj)->expr));
+} /* attr_cond_destroy */
+
+static sdb_type_t attr_cond_type = {
+ /* size = */ sizeof(attr_cond_t),
+ /* init = */ attr_cond_init,
+ /* destroy = */ attr_cond_destroy,
+};
static int
-match_unary(sdb_store_matcher_t *m, sdb_store_base_t *obj)
+obj_cond_init(sdb_object_t *obj, va_list ap)
{
- assert(m && obj);
- assert(UOP_M(m)->op);
+ int field = va_arg(ap, int);
+ sdb_store_expr_t *expr = va_arg(ap, sdb_store_expr_t *);
- return !sdb_store_matcher_matches(UOP_M(m)->op, obj);
-} /* match_unary */
+ SDB_STORE_COND(obj)->cmp = obj_cmp;
+
+ OBJ_C(obj)->field = field;
+ OBJ_C(obj)->expr = expr;
+ sdb_object_ref(SDB_OBJ(expr));
+ return 0;
+} /* obj_cond_init */
+
+static void
+obj_cond_destroy(sdb_object_t *obj)
+{
+ sdb_object_deref(SDB_OBJ(OBJ_C(obj)->expr));
+} /* obj_cond_destroy */
+
+static sdb_type_t obj_cond_type = {
+ /* size = */ sizeof(obj_cond_t),
+ /* init = */ obj_cond_init,
+ /* destroy = */ obj_cond_destroy,
+};
/*
* 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 */
+
+static char *
+string_tostring(string_matcher_t *m, char *buf, size_t buflen)
+{
+ snprintf(buf, buflen, "{ %s%s%s, %p }",
+ m->name ? "'" : "", m->name ? m->name : "NULL", m->name ? "'" : "",
+ m->name_re);
+ return buf;
+} /* string_tostring */
-/* 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);
+ name_matcher_t *m = NAME_M(obj);
M(obj)->type = MATCHER_NAME;
- return name_matcher_init(&m->name, ap);
-} /* obj_matcher_init */
+ 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)
+{
+ name_matcher_t *m = NAME_M(obj);
+ string_matcher_destroy(&m->name);
+} /* name_matcher_destroy */
+
+static char *
+name_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
{
- obj_matcher_t *m = OBJ_M(obj);
- name_matcher_destroy(&m->name);
-} /* obj_matcher_destroy */
+ char name[buflen + 1];
+ assert(m->type == MATCHER_NAME);
+ snprintf(buf, buflen, "OBJ[%s]{ NAME%s }",
+ SDB_STORE_TYPE_TO_NAME(NAME_M(m)->obj_type),
+ string_tostring(&NAME_M(m)->name, name, sizeof(name)));
+ return buf;
+} /* name_tostring */
static int
attr_matcher_init(sdb_object_t *obj, va_list ap)
if (! attr->name)
return -1;
}
- return name_matcher_init(&attr->value, ap);
+ return string_matcher_init(&attr->value, ap);
} /* attr_matcher_init */
static void
if (attr->name)
free(attr->name);
attr->name = NULL;
- name_matcher_destroy(&attr->value);
+ string_matcher_destroy(&attr->value);
} /* attr_matcher_destroy */
+static char *
+attr_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
+{
+ char value[buflen + 1];
+
+ if (! m) {
+ snprintf(buf, buflen, "ATTR{}");
+ return buf;
+ }
+
+ assert(m->type == MATCHER_ATTR);
+ snprintf(buf, buflen, "ATTR[%s]{ VALUE%s }", ATTR_M(m)->name,
+ string_tostring(&ATTR_M(m)->value, value, sizeof(value)));
+ return buf;
+} /* attr_tostring */
+
static int
-host_matcher_init(sdb_object_t *obj, va_list ap)
+cond_matcher_init(sdb_object_t *obj, va_list ap)
{
- attr_matcher_t *attr;
- int status;
+ int type = va_arg(ap, int);
+ sdb_store_cond_t *cond = va_arg(ap, sdb_store_cond_t *);
- status = obj_matcher_init(obj, ap);
- if (status)
- return status;
+ if (! cond)
+ return -1;
- attr = va_arg(ap, attr_matcher_t *);
- sdb_object_ref(SDB_OBJ(attr));
- HOST_M(obj)->attr = attr;
+ sdb_object_ref(SDB_OBJ(cond));
- M(obj)->type = MATCHER_HOST;
+ M(obj)->type = type;
+ COND_M(obj)->cond = cond;
return 0;
-} /* host_matcher_init */
+} /* cond_matcher_init */
static void
-host_matcher_destroy(sdb_object_t *obj)
+cond_matcher_destroy(sdb_object_t *obj)
{
- obj_matcher_destroy(obj);
- sdb_object_deref(SDB_OBJ(HOST_M(obj)->attr));
-} /* host_matcher_destroy */
+ sdb_object_deref(SDB_OBJ(COND_M(obj)->cond));
+} /* cond_matcher_destroy */
+
+static char *
+cond_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
+{
+ const char *type, *id;
+ sdb_data_t value = SDB_DATA_INIT;
+ char value_str[buflen];
+ sdb_store_expr_t *expr;
+
+ if (COND_M(m)->cond->cmp == attr_cmp) {
+ type = "ATTR";
+ id = ATTR_C(COND_M(m)->cond)->name;
+ expr = ATTR_C(COND_M(m)->cond)->expr;
+ }
+ else if (COND_M(m)->cond->cmp == obj_cmp) {
+ type = "OBJ";
+ id = SDB_FIELD_TO_NAME(OBJ_C(COND_M(m)->cond)->field);
+ expr = OBJ_C(COND_M(m)->cond)->expr;
+ }
+ else {
+ snprintf(buf, buflen, "<unknown>");
+ return buf;
+ }
+
+ if (sdb_store_expr_eval(expr, NULL, &value))
+ snprintf(value_str, sizeof(value_str), "ERR");
+ else if (sdb_data_format(&value, value_str, sizeof(value_str),
+ SDB_SINGLE_QUOTED) < 0)
+ snprintf(value_str, sizeof(value_str), "ERR");
+ snprintf(buf, buflen, "%s[%s]{ %s %s }", type, id,
+ MATCHER_SYM(m->type), value_str);
+ sdb_data_free_datum(&value);
+ return buf;
+} /* cond_tostring */
static int
op_matcher_init(sdb_object_t *obj, va_list ap)
sdb_object_deref(SDB_OBJ(OP_M(obj)->right));
} /* op_matcher_destroy */
+static char *
+op_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
+{
+ char left[buflen + 1], right[buflen + 1];
+
+ if (! m) {
+ /* this should not happen */
+ snprintf(buf, buflen, "()");
+ return buf;
+ }
+
+ assert((m->type == MATCHER_OR) || (m->type == MATCHER_AND));
+ snprintf(buf, buflen, "(%s, %s, %s)",
+ m->type == MATCHER_OR ? "OR" : "AND",
+ sdb_store_matcher_tostring(OP_M(m)->left, left, sizeof(left)),
+ sdb_store_matcher_tostring(OP_M(m)->right, right, sizeof(right)));
+ return buf;
+} /* op_tostring */
+
static int
uop_matcher_init(sdb_object_t *obj, va_list ap)
{
sdb_object_deref(SDB_OBJ(UOP_M(obj)->op));
} /* uop_matcher_destroy */
+static char *
+uop_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
+{
+ char op[buflen + 1];
+
+ if (! m) {
+ /* this should not happen */
+ snprintf(buf, buflen, "()");
+ return buf;
+ }
+
+ assert(m->type == MATCHER_NOT);
+ snprintf(buf, buflen, "(NOT, %s)",
+ sdb_store_matcher_tostring(UOP_M(m)->op, op, sizeof(op)));
+ return buf;
+} /* uop_tostring */
+
+static int
+isnull_matcher_init(sdb_object_t *obj, va_list ap)
+{
+ const char *name;
+
+ M(obj)->type = va_arg(ap, int);
+ if (M(obj)->type != MATCHER_ISNULL)
+ return -1;
+
+ name = va_arg(ap, const char *);
+ if (! name)
+ return -1;
+ ISNULL_M(obj)->attr_name = strdup(name);
+ if (! ISNULL_M(obj)->attr_name)
+ return -1;
+ return 0;
+} /* isnull_matcher_init */
+
+static void
+isnull_matcher_destroy(sdb_object_t *obj)
+{
+ if (ISNULL_M(obj)->attr_name)
+ free(ISNULL_M(obj)->attr_name);
+ ISNULL_M(obj)->attr_name = NULL;
+} /* isnull_matcher_destroy */
+
+static char *
+isnull_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
+{
+ snprintf(buf, buflen, "(IS NULL, ATTR[%s])", ISNULL_M(m)->attr_name);
+ return buf;
+} /* isnull_tostring */
+
static sdb_type_t name_type = {
- /* size = */ sizeof(obj_matcher_t),
- /* init = */ obj_matcher_init,
- /* destroy = */ obj_matcher_destroy,
+ /* size = */ sizeof(name_matcher_t),
+ /* init = */ name_matcher_init,
+ /* destroy = */ name_matcher_destroy,
};
static sdb_type_t attr_type = {
/* destroy = */ attr_matcher_destroy,
};
-static sdb_type_t host_type = {
- /* size = */ sizeof(host_matcher_t),
- /* init = */ host_matcher_init,
- /* destroy = */ host_matcher_destroy,
+static sdb_type_t cond_type = {
+ /* size = */ sizeof(cond_matcher_t),
+ /* init = */ cond_matcher_init,
+ /* destroy = */ cond_matcher_destroy,
};
static sdb_type_t op_type = {
/* destroy = */ uop_matcher_destroy,
};
+static sdb_type_t isnull_type = {
+ /* size = */ sizeof(isnull_matcher_t),
+ /* init = */ isnull_matcher_init,
+ /* destroy = */ isnull_matcher_destroy,
+};
+
+typedef char *(*matcher_tostring_cb)(sdb_store_matcher_t *, char *, size_t);
+
+/* this array needs to be indexable by the matcher types;
+ * -> update the enum in store-private.h when updating this */
+static matcher_tostring_cb
+matchers_tostring[] = {
+ op_tostring,
+ op_tostring,
+ uop_tostring,
+ name_tostring,
+ attr_tostring,
+ cond_tostring,
+ cond_tostring,
+ cond_tostring,
+ cond_tostring,
+ cond_tostring,
+ isnull_tostring,
+};
+
/*
* public API
*/
+sdb_store_cond_t *
+sdb_store_attr_cond(const char *name, sdb_store_expr_t *expr)
+{
+ return SDB_STORE_COND(sdb_object_create("attr-cond", attr_cond_type,
+ name, expr));
+} /* sdb_store_attr_cond */
+
+sdb_store_cond_t *
+sdb_store_obj_cond(int field, sdb_store_expr_t *expr)
+{
+ return SDB_STORE_COND(sdb_object_create("obj-cond", obj_cond_type,
+ field, expr));
+} /* sdb_store_obj_cond */
+
sdb_store_matcher_t *
sdb_store_name_matcher(int type, const char *name, _Bool re)
{
sdb_store_matcher_t *m;
if (re)
- m = M(sdb_object_create("name-matcher", name_type,
- NULL, name));
+ m = M(sdb_object_create("name-matcher", name_type, NULL, name));
else
- m = M(sdb_object_create("name-matcher", name_type,
- name, NULL));
+ m = M(sdb_object_create("name-matcher", name_type, name, NULL));
if (! m)
return NULL;
- OBJ_M(m)->obj_type = type;
+ NAME_M(m)->obj_type = type;
return m;
} /* sdb_store_name_matcher */
sdb_store_matcher_t *
sdb_store_attr_matcher(const char *name, const char *value, _Bool re)
{
+ sdb_store_matcher_t *m;
+
+ if (! name)
+ return NULL;
+
if (re)
- return M(sdb_object_create("attr-matcher", attr_type,
+ m = M(sdb_object_create("attr-matcher", attr_type,
name, NULL, value));
- return M(sdb_object_create("attr-matcher", attr_type,
- name, value, NULL));
+ else
+ m = M(sdb_object_create("attr-matcher", attr_type,
+ name, value, NULL));
+ return m;
} /* sdb_store_attr_matcher */
sdb_store_matcher_t *
-sdb_store_host_matcher(const char *host_name, const char *host_name_re,
- sdb_store_matcher_t *attr_matcher)
+sdb_store_lt_matcher(sdb_store_cond_t *cond)
+{
+ return M(sdb_object_create("lt-matcher", cond_type,
+ MATCHER_LT, cond));
+} /* sdb_store_lt_matcher */
+
+sdb_store_matcher_t *
+sdb_store_le_matcher(sdb_store_cond_t *cond)
+{
+ return M(sdb_object_create("le-matcher", cond_type,
+ MATCHER_LE, cond));
+} /* sdb_store_le_matcher */
+
+sdb_store_matcher_t *
+sdb_store_eq_matcher(sdb_store_cond_t *cond)
+{
+ return M(sdb_object_create("eq-matcher", cond_type,
+ MATCHER_EQ, cond));
+} /* sdb_store_eq_matcher */
+
+sdb_store_matcher_t *
+sdb_store_ge_matcher(sdb_store_cond_t *cond)
+{
+ return M(sdb_object_create("ge-matcher", cond_type,
+ MATCHER_GE, cond));
+} /* sdb_store_ge_matcher */
+
+sdb_store_matcher_t *
+sdb_store_gt_matcher(sdb_store_cond_t *cond)
+{
+ return M(sdb_object_create("gt-matcher", cond_type,
+ MATCHER_GT, cond));
+} /* sdb_store_gt_matcher */
+
+sdb_store_matcher_t *
+sdb_store_isnull_matcher(const char *attr_name)
+{
+ return M(sdb_object_create("isnull-matcher", isnull_type,
+ MATCHER_ISNULL, attr_name));
+} /* sdb_store_isnull_matcher */
+
+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, "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 */
+
+static int
+parse_cond_op(const char *op,
+ sdb_store_matcher_t *(**matcher)(sdb_store_cond_t *), _Bool *inv)
+{
+ *inv = 0;
+ if (! strcasecmp(op, "<"))
+ *matcher = sdb_store_lt_matcher;
+ else if (! strcasecmp(op, "<="))
+ *matcher = sdb_store_le_matcher;
+ else if (! strcasecmp(op, "="))
+ *matcher = sdb_store_eq_matcher;
+ else if (! strcasecmp(op, ">="))
+ *matcher = sdb_store_ge_matcher;
+ else if (! strcasecmp(op, ">"))
+ *matcher = sdb_store_gt_matcher;
+ else if (! strcasecmp(op, "!=")) {
+ *matcher = sdb_store_eq_matcher;
+ *inv = 1;
+ }
+ else
+ return -1;
+ return 0;
+} /* parse_cond_op */
+
+static sdb_store_matcher_t *
+parse_attr_cmp(const char *attr, const char *op, sdb_store_expr_t *expr)
{
- return M(sdb_object_create("host-matcher", host_type,
- host_name, host_name_re, attr_matcher));
-} /* sdb_store_host_matcher */
+ sdb_store_matcher_t *(*matcher)(sdb_store_cond_t *) = NULL;
+ sdb_store_matcher_t *m;
+ sdb_store_cond_t *cond;
+ _Bool inv = 0;
+
+ if (! attr)
+ return NULL;
+
+ if (! strcasecmp(op, "IS")) {
+ if (! expr)
+ return sdb_store_isnull_matcher(attr);
+ else
+ return NULL;
+ }
+ else if (! expr)
+ return NULL;
+ else if (parse_cond_op(op, &matcher, &inv))
+ return NULL;
+
+ cond = sdb_store_attr_cond(attr, expr);
+ if (! cond)
+ return NULL;
+
+ m = matcher(cond);
+ /* pass ownership to 'm' or destroy in case of an error */
+ sdb_object_deref(SDB_OBJ(cond));
+ return maybe_inv_matcher(m, inv);
+} /* parse_attr_cmp */
sdb_store_matcher_t *
sdb_store_matcher_parse_cmp(const char *obj_type, const char *attr,
- const char *op, const char *value)
+ 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;
- /* TODO: support other operators */
+ /* XXX: this code sucks! */
if (! strcasecmp(op, "=")) {
/* nothing to do */
}
inv = 1;
re = 1;
}
+ else if (type == SDB_ATTRIBUTE)
+ return parse_attr_cmp(attr, op, expr);
else
return NULL;
- if (! strcasecmp(attr, "name"))
- m = sdb_store_name_matcher(type, value, re);
- else if (type == SDB_ATTRIBUTE)
- m = sdb_store_attr_matcher(attr, value, re);
-
- if (! m)
+ if (! expr)
return NULL;
- if (inv) {
- sdb_store_matcher_t *tmp;
- tmp = sdb_store_inv_matcher(m);
- /* pass ownership to the inverse matcher */
- sdb_object_deref(SDB_OBJ(m));
- m = tmp;
+ if (sdb_store_expr_eval(expr, NULL, &value))
+ return NULL;
+ if (value.type != SDB_TYPE_STRING) {
+ sdb_data_free_datum(&value);
+ if (type != SDB_ATTRIBUTE)
+ return NULL;
+ return parse_attr_cmp(attr, op, expr);
}
- return m;
+
+ if (! attr)
+ m = sdb_store_name_matcher(type, value.data.string, re);
+ else if (type == SDB_ATTRIBUTE)
+ m = sdb_store_attr_matcher(attr, 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_matcher_parse_field_cmp(const char *name, const char *op,
+ sdb_store_expr_t *expr)
+{
+ sdb_store_matcher_t *(*matcher)(sdb_store_cond_t *) = NULL;
+ sdb_store_matcher_t *m;
+ sdb_store_cond_t *cond;
+ _Bool inv = 0;
+
+ int field;
+
+ if (! expr)
+ return NULL;
+
+ field = sdb_store_parse_field_name(name);
+ if (field < 0)
+ return NULL;
+
+ if (parse_cond_op(op, &matcher, &inv))
+ return NULL;
+ cond = sdb_store_obj_cond(field, expr);
+ if (! cond)
+ return NULL;
+
+ assert(matcher);
+ m = matcher(cond);
+ /* pass ownership to 'm' or destroy in case of an error */
+ sdb_object_deref(SDB_OBJ(cond));
+ return maybe_inv_matcher(m, inv);
+} /* sdb_store_matcher_parse_field_cmp */
+
sdb_store_matcher_t *
sdb_store_dis_matcher(sdb_store_matcher_t *left, sdb_store_matcher_t *right)
{
} /* 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 1;
if ((m->type < 0) || ((size_t)m->type >= SDB_STATIC_ARRAY_LEN(matchers)))
return 0;
- return matchers[m->type](m, obj);
+ return matchers[m->type](m, obj, filter);
} /* sdb_store_matcher_matches */
char *
} /* sdb_store_matcher_tostring */
int
-sdb_store_lookup(sdb_store_matcher_t *m, sdb_store_lookup_cb cb,
- void *user_data)
+sdb_store_scan(sdb_store_matcher_t *m, sdb_store_matcher_t *filter,
+ sdb_store_lookup_cb cb, void *user_data)
{
- lookup_iter_data_t data = { m, cb, user_data };
+ scan_iter_data_t data = { m, filter, cb, user_data };
if (! cb)
return -1;
- return sdb_store_iterate(lookup_iter, &data);
-} /* sdb_store_lookup */
+ return sdb_store_iterate(scan_iter, &data);
+} /* sdb_store_scan */
/* vim: set tw=78 sw=4 ts=4 noexpandtab : */