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diff --git a/src/frontend/query.c b/src/frontend/query.c
index d83ffd82ca76ab34bd03d0a18359baeaab194c1c..a30bee3e4b8f274730ff650d2ca84cc168fee58d 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 "utils/error.h"
#include "utils/strbuf.h"
#include <errno.h>
+#include <string.h>
/*
* private helper functions
* public API
*/
+int
+sdb_fe_query(sdb_conn_t *conn)
+{
+ sdb_llist_t *parsetree;
+ sdb_conn_node_t *node = NULL;
+ int status = 0;
+
+ if ((! conn) || (conn->cmd != CONNECTION_QUERY))
+ return -1;
+
+ parsetree = sdb_fe_parse(sdb_strbuf_string(conn->buf),
+ (int)conn->cmd_len);
+ if (! parsetree) {
+ 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 parse query '%s'",
+ query);
+ return -1;
+ }
+
+ switch (sdb_llist_len(parsetree)) {
+ case 0:
+ /* skipping empty command */
+ break;
+ case 1:
+ node = SDB_CONN_NODE(sdb_llist_get(parsetree, 0));
+ break;
+
+ default:
+ {
+ 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_WARNING, "frontend: Ignoring %d command%s "
+ "in multi-statement query '%s'",
+ sdb_llist_len(parsetree) - 1,
+ sdb_llist_len(parsetree) == 2 ? "" : "s",
+ query);
+ node = SDB_CONN_NODE(sdb_llist_get(parsetree, 0));
+ }
+ }
+
+ if (node) {
+ status = sdb_fe_exec(conn, node);
+ sdb_object_deref(SDB_OBJ(node));
+ }
+
+ sdb_llist_destroy(parsetree);
+ return status;
+} /* sdb_fe_query */
+
+int
+sdb_fe_fetch(sdb_conn_t *conn)
+{
+ char hostname[conn->cmd_len + 1];
+ if ((! conn) || (conn->cmd != CONNECTION_FETCH))
+ return -1;
+ strncpy(hostname, sdb_strbuf_string(conn->buf), conn->cmd_len);
+ hostname[sizeof(hostname) - 1] = '\0';
+ return sdb_fe_exec_fetch(conn, hostname, /* filter = */ NULL);
+} /* sdb_fe_fetch */
+
+int
+sdb_fe_list(sdb_conn_t *conn)
+{
+ if ((! conn) || (conn->cmd != CONNECTION_LIST))
+ return -1;
+ return sdb_fe_exec_list(conn, /* filter = */ NULL);
+} /* sdb_fe_list */
+
+int
+sdb_fe_lookup(sdb_conn_t *conn)
+{
+ sdb_store_matcher_t *m;
+ int status;
+
+ if ((! conn) || (conn->cmd != CONNECTION_LOOKUP))
+ return -1;
+
+ m = sdb_fe_parse_matcher(sdb_strbuf_string(conn->buf),
+ (int)conn->cmd_len);
+ if (! m) {
+ char expr[conn->cmd_len + 1];
+ strncpy(expr, sdb_strbuf_string(conn->buf), conn->cmd_len);
+ expr[sizeof(expr) - 1] = '\0';
+ sdb_log(SDB_LOG_ERR, "frontend: Failed to parse "
+ "lookup condition '%s'", expr);
+ return -1;
+ }
+
+ status = sdb_fe_exec_lookup(conn, m, /* filter = */ NULL);
+ sdb_object_deref(SDB_OBJ(m));
+ 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 CONNECTION_FETCH:
- return sdb_fe_fetch(conn, CONN_FETCH(node)->name,
- /* filter = */ NULL);
+ if (CONN_FETCH(node)->filter)
+ filter = CONN_FETCH(node)->filter->matcher;
+ return sdb_fe_exec_fetch(conn, CONN_FETCH(node)->name, filter);
case CONNECTION_LIST:
- return sdb_fe_list(conn, /* filter = */ NULL);
+ if (CONN_LIST(node)->filter)
+ filter = CONN_LIST(node)->filter->matcher;
+ return sdb_fe_exec_list(conn, filter);
case CONNECTION_LOOKUP:
- return sdb_fe_lookup(conn, CONN_LOOKUP(node)->matcher->matcher,
- /* filter = */ NULL);
+ 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, m, filter);
default:
sdb_log(SDB_LOG_ERR, "frontend: Unknown command %i", node->cmd);
} /* sdb_fe_exec */
int
-sdb_fe_fetch(sdb_conn_t *conn, const char *name, sdb_store_matcher_t *filter)
+sdb_fe_exec_fetch(sdb_conn_t *conn, const char *name,
+ sdb_store_matcher_t *filter)
{
sdb_strbuf_t *buf;
sdb_store_obj_t *host;
sdb_strbuf_destroy(buf);
sdb_object_deref(SDB_OBJ(host));
return 0;
-} /* sdb_fe_fetch */
+} /* sdb_fe_exec_fetch */
int
-sdb_fe_list(sdb_conn_t *conn, sdb_store_matcher_t *filter)
+sdb_fe_exec_list(sdb_conn_t *conn, sdb_store_matcher_t *filter)
{
sdb_strbuf_t *buf;
(uint32_t)sdb_strbuf_len(buf), sdb_strbuf_string(buf));
sdb_strbuf_destroy(buf);
return 0;
-} /* sdb_fe_list */
+} /* sdb_fe_exec_list */
int
-sdb_fe_lookup(sdb_conn_t *conn, sdb_store_matcher_t *m,
+sdb_fe_exec_lookup(sdb_conn_t *conn, sdb_store_matcher_t *m,
sdb_store_matcher_t *filter)
{
tojson_data_t data = { NULL, filter, 0 };
(uint32_t)sdb_strbuf_len(data.buf), sdb_strbuf_string(data.buf));
sdb_strbuf_destroy(data.buf);
return 0;
-} /* sdb_fe_lookup */
+} /* sdb_fe_exec_lookup */
/* vim: set tw=78 sw=4 ts=4 noexpandtab : */