X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=src%2Ffrontend%2Fquery.c;h=0b582f54dce54e8481b8b6e0292b52856c48c9ec;hb=e2f1ad2dd762373e0fa6c4b2c732d9fb094ee45c;hp=9e3b66a3a5c2b55579dccb5fdc4741631930e95d;hpb=c2b7616c8a80c5de6356b675d55a4ee36415fd7b;p=sysdb.git

diff --git a/src/frontend/query.c b/src/frontend/query.c
index 9e3b66a..0b582f5 100644
--- a/src/frontend/query.c
+++ b/src/frontend/query.c
@@ -27,17 +27,95 @@
 
 #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
+ */
+
+static int
+lookup_tojson(sdb_store_base_t *obj, void *user_data)
+{
+	sdb_strbuf_t *buf = user_data;
+	if (sdb_strbuf_len(buf) > 1)
+		sdb_strbuf_append(buf, ",");
+	return sdb_store_host_tojson(obj, buf, /* flags = */ 0);
+} /* lookup_tojson */
+
 /*
  * public API
  */
 
+int
+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);
+		case CONNECTION_LIST:
+			return sdb_fe_list(conn);
+		case CONNECTION_LOOKUP:
+			return sdb_fe_lookup(conn, CONN_LOOKUP(node)->matcher->matcher);
+
+		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_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)
 {
@@ -50,25 +128,58 @@ sdb_fe_list(sdb_conn_t *conn)
 				"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, /* 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;
+	}
+
+	sdb_connection_send(conn, CONNECTION_OK,
+			(uint32_t)sdb_strbuf_len(buf), sdb_strbuf_string(buf));
+	sdb_strbuf_destroy(buf);
+	return 0;
+} /* sdb_fe_list */
+
+int
+sdb_fe_lookup(sdb_conn_t *conn, sdb_store_matcher_t *m)
+{
+	sdb_strbuf_t *buf;
+
+	buf = sdb_strbuf_create(1024);
+	if (! 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(buf);
+		return -1;
+	}
+
+	sdb_strbuf_append(buf, "[");
+
+	if (sdb_store_lookup(m, lookup_tojson, buf)) {
+		sdb_log(SDB_LOG_ERR, "frontend: Failed to lookup hosts");
+		sdb_strbuf_sprintf(conn->errbuf, "Failed to lookup hosts");
 		sdb_strbuf_destroy(buf);
 		return -1;
 	}
 
+	sdb_strbuf_append(buf, "]");
+
 	sdb_connection_send(conn, CONNECTION_OK,
 			(uint32_t)sdb_strbuf_len(buf), sdb_strbuf_string(buf));
 	sdb_strbuf_destroy(buf);
 	return 0;
-} /* session_start */
+} /* sdb_fe_lookup */
 
 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */