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diff --git a/src/frontend/query.c b/src/frontend/query.c
index 9e3b66a3a5c2b55579dccb5fdc4741631930e95d..d83ffd82ca76ab34bd03d0a18359baeaab194c1c 100644 (file)
--- a/src/frontend/query.c
+++ b/src/frontend/query.c
#include "sysdb.h"
-#include "core/error.h"
#include "core/store.h"
#include "frontend/connection-private.h"
+#include "utils/error.h"
#include "utils/strbuf.h"
#include <errno.h>
+/*
+ * private helper functions
+ */
+
+typedef struct {
+ sdb_strbuf_t *buf;
+ sdb_store_matcher_t *filter;
+
+ size_t last_len;
+} tojson_data_t;
+
+static int
+lookup_tojson(sdb_store_obj_t *obj, void *user_data)
+{
+ tojson_data_t *data = user_data;
+ int status;
+
+ if (data->filter && (! sdb_store_matcher_matches(data->filter, obj, NULL)))
+ return 0;
+
+ if (sdb_strbuf_len(data->buf) > data->last_len)
+ sdb_strbuf_append(data->buf, ",");
+ data->last_len = sdb_strbuf_len(data->buf);
+ status = sdb_store_host_tojson(obj, data->buf,
+ data->filter, /* flags = */ 0);
+ return status;
+} /* lookup_tojson */
+
/*
* public API
*/
int
-sdb_fe_list(sdb_conn_t *conn)
+sdb_fe_exec(sdb_conn_t *conn, sdb_conn_node_t *node)
+{
+ if (! node)
+ return -1;
+
+ switch (node->cmd) {
+ case CONNECTION_FETCH:
+ return sdb_fe_fetch(conn, CONN_FETCH(node)->name,
+ /* filter = */ NULL);
+ case CONNECTION_LIST:
+ return sdb_fe_list(conn, /* filter = */ NULL);
+ case CONNECTION_LOOKUP:
+ return sdb_fe_lookup(conn, CONN_LOOKUP(node)->matcher->matcher,
+ /* filter = */ NULL);
+
+ default:
+ sdb_log(SDB_LOG_ERR, "frontend: Unknown command %i", node->cmd);
+ return -1;
+ }
+ return -1;
+} /* sdb_fe_exec */
+
+int
+sdb_fe_fetch(sdb_conn_t *conn, const char *name, sdb_store_matcher_t *filter)
+{
+ sdb_strbuf_t *buf;
+ sdb_store_obj_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, filter, /* 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, sdb_store_matcher_t *filter)
{
sdb_strbuf_t *buf;
"buffer to handle LIST command: %s",
sdb_strerror(errno, errbuf, sizeof(errbuf)));
- /* XXX: send error message */
- sdb_connection_send(conn, CONNECTION_ERROR, 0, NULL);
+ sdb_strbuf_sprintf(conn->errbuf, "Out of memory");
sdb_strbuf_destroy(buf);
return -1;
}
- if (sdb_store_tojson(buf)) {
+ if (sdb_store_tojson(buf, filter, /* flags = */ SDB_SKIP_ALL)) {
sdb_log(SDB_LOG_ERR, "frontend: Failed to serialize "
"store to JSON");
- sdb_connection_send(conn, CONNECTION_ERROR, 0, NULL);
+ sdb_strbuf_sprintf(conn->errbuf, "Out of memory");
sdb_strbuf_destroy(buf);
return -1;
}
(uint32_t)sdb_strbuf_len(buf), sdb_strbuf_string(buf));
sdb_strbuf_destroy(buf);
return 0;
-} /* session_start */
+} /* sdb_fe_list */
+
+int
+sdb_fe_lookup(sdb_conn_t *conn, sdb_store_matcher_t *m,
+ sdb_store_matcher_t *filter)
+{
+ tojson_data_t data = { NULL, filter, 0 };
+
+ data.buf = sdb_strbuf_create(1024);
+ if (! data.buf) {
+ char errbuf[1024];
+ sdb_log(SDB_LOG_ERR, "frontend: Failed to create "
+ "buffer to handle LOOKUP command: %s",
+ sdb_strerror(errno, errbuf, sizeof(errbuf)));
+
+ sdb_strbuf_sprintf(conn->errbuf, "Out of memory");
+ sdb_strbuf_destroy(data.buf);
+ return -1;
+ }
+
+ sdb_strbuf_append(data.buf, "[");
+
+ /* Let the JSON serializer handle the filter instead of the scanner. Else,
+ * we'd have to filter twice -- once in the scanner and then again in the
+ * serializer. */
+ data.last_len = sdb_strbuf_len(data.buf);
+ if (sdb_store_scan(m, /* filter */ NULL, lookup_tojson, &data)) {
+ sdb_log(SDB_LOG_ERR, "frontend: Failed to lookup hosts");
+ sdb_strbuf_sprintf(conn->errbuf, "Failed to lookup hosts");
+ sdb_strbuf_destroy(data.buf);
+ return -1;
+ }
+
+ sdb_strbuf_append(data.buf, "]");
+
+ sdb_connection_send(conn, CONNECTION_OK,
+ (uint32_t)sdb_strbuf_len(data.buf), sdb_strbuf_string(data.buf));
+ sdb_strbuf_destroy(data.buf);
+ return 0;
+} /* sdb_fe_lookup */
/* vim: set tw=78 sw=4 ts=4 noexpandtab : */