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diff --git a/src/frontend/query.c b/src/frontend/query.c
index 2c80be76f84f5ee8ca98560cebf293219c238e31..149750b05782dc80311278f495fc994ad1b9cf1f 100644 (file)
--- a/src/frontend/query.c
+++ b/src/frontend/query.c
#include "core/store.h"
#include "frontend/connection-private.h"
-#include "frontend/parser.h"
+#include "parser/ast.h"
+#include "parser/parser.h"
#include "utils/error.h"
#include "utils/proto.h"
#include "utils/strbuf.h"
sdb_fe_query(sdb_conn_t *conn)
{
sdb_llist_t *parsetree;
- sdb_conn_node_t *node = NULL;
+ sdb_ast_node_t *ast = NULL;
+
+ sdb_store_matcher_t *q;
+ sdb_strbuf_t *buf = NULL;
int status = 0;
if ((! conn) || (conn->cmd != SDB_CONNECTION_QUERY))
return -1;
- parsetree = sdb_fe_parse(sdb_strbuf_string(conn->buf),
+ parsetree = sdb_parser_parse(sdb_strbuf_string(conn->buf),
(int)conn->cmd_len, conn->errbuf);
if (! parsetree) {
char query[conn->cmd_len + 1];
sdb_connection_send(conn, SDB_CONNECTION_DATA, 0, NULL);
break;
case 1:
- node = SDB_CONN_NODE(sdb_llist_get(parsetree, 0));
+ ast = SDB_AST_NODE(sdb_llist_get(parsetree, 0));
break;
default:
sdb_llist_len(parsetree) - 1,
sdb_llist_len(parsetree) == 2 ? "" : "s",
query);
- node = SDB_CONN_NODE(sdb_llist_get(parsetree, 0));
+ ast = SDB_AST_NODE(sdb_llist_get(parsetree, 0));
}
}
- if (node) {
- status = sdb_fe_exec(conn, node);
- sdb_object_deref(SDB_OBJ(node));
+ q = sdb_store_query_prepare(ast);
+ if (! q) {
+ /* this shouldn't happen */
+ sdb_strbuf_sprintf(conn->errbuf, "failed to compile AST");
+ sdb_log(SDB_LOG_ERR, "frontend: failed to compile AST");
+ status = -1;
+ } else {
+ buf = sdb_strbuf_create(1024);
+ if (! buf) {
+ sdb_strbuf_sprintf(conn->errbuf, "Out of memory");
+ sdb_object_deref(SDB_OBJ(q));
+ return -1;
+ }
+ status = sdb_store_query_execute(q, buf, conn->errbuf);
+ if (status < 0) {
+ char query[conn->cmd_len + 1];
+ strncpy(query, sdb_strbuf_string(conn->buf), conn->cmd_len);
+ query[sizeof(query) - 1] = '\0';
+ sdb_log(SDB_LOG_ERR, "frontend: failed to execute query '%s'", query);
+ }
}
-
+ sdb_object_deref(SDB_OBJ(ast));
sdb_llist_destroy(parsetree);
- return status;
+
+ if (status < 0) {
+ sdb_object_deref(SDB_OBJ(q));
+ sdb_strbuf_destroy(buf);
+ return status;
+ }
+
+ assert(buf);
+ sdb_connection_send(conn, status,
+ (uint32_t)sdb_strbuf_len(buf), sdb_strbuf_string(buf));
+
+ sdb_strbuf_destroy(buf);
+ sdb_object_deref(SDB_OBJ(q));
+ return 0;
} /* sdb_fe_query */
int
return status;
} /* sdb_fe_lookup */
-int
-sdb_fe_exec(sdb_conn_t *conn, sdb_conn_node_t *node)
-{
- sdb_store_matcher_t *m = NULL, *filter = NULL;
-
- if (! node)
- return -1;
-
- switch (node->cmd) {
- case SDB_CONNECTION_FETCH:
- if (CONN_FETCH(node)->filter)
- filter = CONN_FETCH(node)->filter->matcher;
- return sdb_fe_exec_fetch(conn, CONN_FETCH(node)->type,
- CONN_FETCH(node)->host, CONN_FETCH(node)->name, filter);
- case SDB_CONNECTION_LIST:
- if (CONN_LIST(node)->filter)
- filter = CONN_LIST(node)->filter->matcher;
- return sdb_fe_exec_list(conn, CONN_LIST(node)->type, filter);
- case SDB_CONNECTION_LOOKUP:
- if (CONN_LOOKUP(node)->matcher)
- m = CONN_LOOKUP(node)->matcher->matcher;
- if (CONN_LOOKUP(node)->filter)
- filter = CONN_LOOKUP(node)->filter->matcher;
- return sdb_fe_exec_lookup(conn,
- CONN_LOOKUP(node)->type, m, filter);
- case SDB_CONNECTION_STORE_HOST:
- {
- conn_store_host_t *n = CONN_STORE_HOST(node);
- sdb_proto_host_t host = { n->last_update, n->name };
- return sdb_fe_store_host(conn, &host);
- }
- case SDB_CONNECTION_STORE_SERVICE:
- {
- conn_store_svc_t *n = CONN_STORE_SVC(node);
- sdb_proto_service_t svc = { n->last_update, n->hostname, n->name };
- return sdb_fe_store_service(conn, &svc);
- }
- case SDB_CONNECTION_STORE_METRIC:
- {
- conn_store_metric_t *n = CONN_STORE_METRIC(node);
- sdb_proto_metric_t metric = {
- n->last_update, n->hostname, n->name,
- n->store_type, n->store_id
- };
- return sdb_fe_store_metric(conn, &metric);
- }
- case SDB_CONNECTION_STORE_ATTRIBUTE:
- {
- conn_store_attr_t *n = CONN_STORE_ATTR(node);
- sdb_proto_attribute_t attr = {
- n->last_update, n->parent_type, n->hostname, n->parent,
- n->key, n->value
- };
- return sdb_fe_store_attribute(conn, &attr);
- }
- case SDB_CONNECTION_TIMESERIES:
- return sdb_fe_exec_timeseries(conn,
- CONN_TS(node)->hostname, CONN_TS(node)->metric,
- &CONN_TS(node)->opts);
-
- default:
- sdb_log(SDB_LOG_ERR, "frontend: Unknown command %i", node->cmd);
- return -1;
- }
- return -1;
-} /* sdb_fe_exec */
+/*
+ * TODO: let the functions above build an AST; then drop sdb_fe_exec_*.
+ */
int
sdb_fe_exec_fetch(sdb_conn_t *conn, int type,