frontend: Added 'FETCH <name>' query command.

[sysdb.git] / src / frontend / query.c

diff --git a/src/frontend/query.c b/src/frontend/query.c
index ffec03aef40bc406a2619cc1972f9630dc5a8505..96c46d28db6f2b3425d90cd1079a363882779983 100644 (file)
--- a/src/frontend/query.c
+++ b/src/frontend/query.c
@@ -45,6 +45,8 @@ sdb_fe_exec(sdb_conn_t *conn, sdb_conn_node_t *node)
                return -1;
 
        switch (node->cmd) {
+               case CONNECTION_FETCH:
+                       return sdb_fe_fetch(conn, CONN_FETCH(node)->name);
                case CONNECTION_LIST:
                        return sdb_fe_list(conn);
 
@@ -55,6 +57,50 @@ sdb_fe_exec(sdb_conn_t *conn, sdb_conn_node_t *node)
        return -1;
 } /* sdb_fe_exec */
 
+int
+sdb_fe_fetch(sdb_conn_t *conn, const char *name)
+{
+       sdb_strbuf_t *buf;
+       sdb_store_base_t *host;
+
+       host = sdb_store_get_host(name);
+       if (! host) {
+               sdb_log(SDB_LOG_DEBUG, "frontend: Failed to fetch host '%s': "
+                               "not found", name);
+
+               sdb_strbuf_sprintf(conn->errbuf, "Host %s not found", name);
+               return -1;
+       }
+
+       buf = sdb_strbuf_create(1024);
+       if (! buf) {
+               char errbuf[1024];
+               sdb_log(SDB_LOG_ERR, "frontend: Failed to create "
+                               "buffer to handle FETCH command: %s",
+                               sdb_strerror(errno, errbuf, sizeof(errbuf)));
+
+               sdb_strbuf_sprintf(conn->errbuf, "Out of memory");
+               sdb_strbuf_destroy(buf);
+               sdb_object_deref(SDB_OBJ(host));
+               return -1;
+       }
+
+       if (sdb_store_host_tojson(host, buf, /* flags = */ 0)) {
+               sdb_log(SDB_LOG_ERR, "frontend: Failed to serialize "
+                               "host '%s' to JSON", name);
+               sdb_strbuf_sprintf(conn->errbuf, "Out of memory");
+               sdb_strbuf_destroy(buf);
+               sdb_object_deref(SDB_OBJ(host));
+               return -1;
+       }
+
+       sdb_connection_send(conn, CONNECTION_OK,
+                       (uint32_t)sdb_strbuf_len(buf), sdb_strbuf_string(buf));
+       sdb_strbuf_destroy(buf);
+       sdb_object_deref(SDB_OBJ(host));
+       return 0;
+} /* sdb_fe_fetch */
+
 int
 sdb_fe_list(sdb_conn_t *conn)
 {