X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=src%2Fcore%2Fstore_lookup.c;h=c3029c75078db3c0ee6d35b0fcbe602a799f41f6;hb=dfa8850d084337223b41c03385317bf7359c8643;hp=ac0f2e8c794c61c36a9d0aa34cff47deb2a9c939;hpb=88281ca69be18cdd05acb7fff580f40c091e49f5;p=sysdb.git

diff --git a/src/core/store_lookup.c b/src/core/store_lookup.c
index ac0f2e8..c3029c7 100644
--- a/src/core/store_lookup.c
+++ b/src/core/store_lookup.c
@@ -104,17 +104,20 @@ attr_get(sdb_host_t *host, const char *name, sdb_store_matcher_t *filter)
  */
 
 static int
-attr_cmp(sdb_host_t *host, sdb_store_cond_t *cond,
+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 (sdb_store_expr_eval(ATTR_C(cond)->expr, &value))
+	if (obj->type != SDB_HOST)
+		return INT_MAX;
+
+	if (sdb_store_expr_eval(ATTR_C(cond)->expr, obj, &value))
 		return INT_MAX;
 
-	attr = attr_get(host, ATTR_C(cond)->name, filter);
+	attr = attr_get(HOST(obj), ATTR_C(cond)->name, filter);
 	if (! attr)
 		status = INT_MAX;
 	else if (attr->value.type != value.type)
@@ -125,6 +128,42 @@ attr_cmp(sdb_host_t *host, sdb_store_cond_t *cond,
 	return status;
 } /* attr_cmp */
 
+static int
+obj_cmp(sdb_store_obj_t *obj, sdb_store_cond_t *cond,
+		sdb_store_matcher_t __attribute__((unused)) *filter)
+{
+	sdb_data_t obj_value = SDB_DATA_INIT;
+	sdb_data_t value = SDB_DATA_INIT;
+	int status;
+
+	if (sdb_store_get_field(obj, OBJ_C(cond)->field, &obj_value))
+		return INT_MAX;
+	if (sdb_store_expr_eval(OBJ_C(cond)->expr, obj, &value))
+		return INT_MAX;
+
+	if (obj_value.type != value.type) {
+		sdb_data_free_datum(&value);
+		return INT_MAX;
+	}
+	else 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;
+		status = INT_MAX;
+		for (i = 0; i < obj->backends_num; ++i) {
+			if (! strcasecmp(obj->backends[i], value.data.string)) {
+				status = 0;
+				break;
+			}
+		}
+	}
+	else {
+		status = sdb_data_cmp(&obj_value, &value);
+	}
+	sdb_data_free_datum(&value);
+	return status;
+} /* obj_cmp */
+
 /*
  * matcher implementations
  */
@@ -147,7 +186,7 @@ match_string(string_matcher_t *m, const char *name)
 } /* match_string */
 
 static int
-match_logical(sdb_store_matcher_t *m, sdb_host_t *host,
+match_logical(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
 		sdb_store_matcher_t *filter)
 {
 	int status;
@@ -155,8 +194,7 @@ match_logical(sdb_store_matcher_t *m, sdb_host_t *host,
 	assert((m->type == MATCHER_AND) || (m->type == MATCHER_OR));
 	assert(OP_M(m)->left && OP_M(m)->right);
 
-	status = sdb_store_matcher_matches(OP_M(m)->left, STORE_OBJ(host),
-			filter);
+	status = sdb_store_matcher_matches(OP_M(m)->left, obj, filter);
 
 	/* lazy evaluation */
 	if ((! status) && (m->type == MATCHER_AND))
@@ -164,21 +202,21 @@ match_logical(sdb_store_matcher_t *m, sdb_host_t *host,
 	else if (status && (m->type == MATCHER_OR))
 		return status;
 
-	return sdb_store_matcher_matches(OP_M(m)->right, STORE_OBJ(host), filter);
+	return sdb_store_matcher_matches(OP_M(m)->right, obj, filter);
 } /* match_logical */
 
 static int
-match_unary(sdb_store_matcher_t *m, sdb_host_t *host,
+match_unary(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
 		sdb_store_matcher_t *filter)
 {
 	assert(m->type == MATCHER_NOT);
 	assert(UOP_M(m)->op);
 
-	return !sdb_store_matcher_matches(UOP_M(m)->op, STORE_OBJ(host), filter);
+	return !sdb_store_matcher_matches(UOP_M(m)->op, obj, filter);
 } /* match_unary */
 
 static int
-match_name(sdb_store_matcher_t *m, sdb_host_t *host,
+match_name(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
 		sdb_store_matcher_t *filter)
 {
 	sdb_avltree_iter_t *iter = NULL;
@@ -186,15 +224,20 @@ match_name(sdb_store_matcher_t *m, sdb_host_t *host,
 
 	assert(m->type == MATCHER_NAME);
 
+	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_HOST:
-			return match_string(&NAME_M(m)->name, SDB_OBJ(host)->name);
-			break;
 		case SDB_SERVICE:
-			iter = sdb_avltree_get_iter(host->services);
+			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->attributes);
+			iter = sdb_avltree_get_iter(HOST(obj)->attributes);
 			break;
 	}
 
@@ -213,7 +256,7 @@ match_name(sdb_store_matcher_t *m, sdb_host_t *host,
 } /* match_name */
 
 static int
-match_attr(sdb_store_matcher_t *m, sdb_host_t *host,
+match_attr(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
 		sdb_store_matcher_t *filter)
 {
 	sdb_attribute_t *attr;
@@ -221,7 +264,10 @@ match_attr(sdb_store_matcher_t *m, sdb_host_t *host,
 	assert(m->type == MATCHER_ATTR);
 	assert(ATTR_M(m)->name);
 
-	attr = attr_get(host, ATTR_M(m)->name, filter);
+	if (obj->type != SDB_HOST)
+		return 0;
+
+	attr = attr_get(HOST(obj), ATTR_M(m)->name, filter);
 	if (attr) {
 		char buf[sdb_data_strlen(&attr->value) + 1];
 		if (sdb_data_format(&attr->value, buf, sizeof(buf), SDB_UNQUOTED) <= 0)
@@ -233,64 +279,66 @@ match_attr(sdb_store_matcher_t *m, sdb_host_t *host,
 } /* match_attr */
 
 static int
-match_lt(sdb_store_matcher_t *m, sdb_host_t *host,
+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(host, COND_M(m)->cond, filter);
+	status = COND_M(m)->cond->cmp(obj, COND_M(m)->cond, filter);
 	return (status != INT_MAX) && (status < 0);
 } /* match_lt */
 
 static int
-match_le(sdb_store_matcher_t *m, sdb_host_t *host,
+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(host, COND_M(m)->cond, filter);
+	status = COND_M(m)->cond->cmp(obj, COND_M(m)->cond, filter);
 	return (status != INT_MAX) && (status <= 0);
 } /* match_le */
 
 static int
-match_eq(sdb_store_matcher_t *m, sdb_host_t *host,
+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(host, COND_M(m)->cond, filter);
+	status = COND_M(m)->cond->cmp(obj, COND_M(m)->cond, filter);
 	return (status != INT_MAX) && (! status);
 } /* match_eq */
 
 static int
-match_ge(sdb_store_matcher_t *m, sdb_host_t *host,
+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(host, COND_M(m)->cond, filter);
+	status = COND_M(m)->cond->cmp(obj, COND_M(m)->cond, filter);
 	return (status != INT_MAX) && (status >= 0);
 } /* match_ge */
 
 static int
-match_gt(sdb_store_matcher_t *m, sdb_host_t *host,
+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(host, COND_M(m)->cond, filter);
+	status = COND_M(m)->cond->cmp(obj, COND_M(m)->cond, filter);
 	return (status != INT_MAX) && (status > 0);
 } /* match_gt */
 
 static int
-match_isnull(sdb_store_matcher_t *m, sdb_host_t *host,
+match_isnull(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
 		sdb_store_matcher_t *filter)
 {
 	assert(m->type == MATCHER_ISNULL);
-	return attr_get(host, ISNULL_M(m)->attr_name, filter) == NULL;
+	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_host_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;
@@ -347,6 +395,32 @@ static sdb_type_t attr_cond_type = {
 	/* destroy = */ attr_cond_destroy,
 };
 
+static int
+obj_cond_init(sdb_object_t *obj, va_list ap)
+{
+	int field = va_arg(ap, int);
+	sdb_store_expr_t *expr = va_arg(ap, sdb_store_expr_t *);
+
+	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
  */
@@ -486,19 +560,34 @@ cond_matcher_destroy(sdb_object_t *obj)
 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) {
-		sdb_data_t value = SDB_DATA_INIT;
-		char value_str[buflen];
-		if (sdb_store_expr_eval(ATTR_C(COND_M(m)->cond)->expr, &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, "ATTR[%s]{ %s %s }",
-				ATTR_C(COND_M(m)->cond)->name, MATCHER_SYM(m->type),
-				value_str);
-		sdb_data_free_datum(&value);
+		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 */
 
@@ -685,6 +774,13 @@ sdb_store_attr_cond(const char *name, sdb_store_expr_t *expr)
 				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)
 {
@@ -761,6 +857,58 @@ sdb_store_isnull_matcher(const char *attr_name)
 				MATCHER_ISNULL, attr_name));
 } /* sdb_store_isnull_matcher */
 
+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)
 {
@@ -780,21 +928,7 @@ parse_attr_cmp(const char *attr, const char *op, sdb_store_expr_t *expr)
 	}
 	else if (! expr)
 		return NULL;
-	else 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
+	else if (parse_cond_op(op, &matcher, &inv))
 		return NULL;
 
 	cond = sdb_store_attr_cond(attr, expr);
@@ -804,17 +938,7 @@ parse_attr_cmp(const char *attr, const char *op, sdb_store_expr_t *expr)
 	m = matcher(cond);
 	/* pass ownership to 'm' or destroy in case of an error */
 	sdb_object_deref(SDB_OBJ(cond));
-	if (! m)
-		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;
-	}
-	return m;
+	return maybe_inv_matcher(m, inv);
 } /* parse_attr_cmp */
 
 sdb_store_matcher_t *
@@ -832,6 +956,8 @@ sdb_store_matcher_parse_cmp(const char *obj_type, const char *attr,
 		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
@@ -859,7 +985,7 @@ sdb_store_matcher_parse_cmp(const char *obj_type, const char *attr,
 	if (! expr)
 		return NULL;
 
-	if (sdb_store_expr_eval(expr, &value))
+	if (sdb_store_expr_eval(expr, NULL, &value))
 		return NULL;
 	if (value.type != SDB_TYPE_STRING) {
 		sdb_data_free_datum(&value);
@@ -872,19 +998,39 @@ sdb_store_matcher_parse_cmp(const char *obj_type, const char *attr,
 		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 */
 
-	if (! m)
+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;
 
-	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;
-	}
-	return m;
-} /* sdb_store_matcher_parse_cmp */
+	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)
@@ -910,9 +1056,6 @@ int
 sdb_store_matcher_matches(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
 		sdb_store_matcher_t *filter)
 {
-	if (obj->type != SDB_HOST)
-		return 0;
-
 	if (filter && (! sdb_store_matcher_matches(filter, obj, NULL)))
 		return 0;
 
@@ -923,7 +1066,7 @@ sdb_store_matcher_matches(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
 	if ((m->type < 0) || ((size_t)m->type >= SDB_STATIC_ARRAY_LEN(matchers)))
 		return 0;
 
-	return matchers[m->type](m, HOST(obj), filter);
+	return matchers[m->type](m, obj, filter);
 } /* sdb_store_matcher_matches */
 
 char *