X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=src%2Ffrontend%2Fquery.c;h=39b5d53004da6774ad6395ade472e22cc33971b7;hb=ae719038f60b9639f600333474b596e48e497e51;hp=585222d25a56fbe971b57c6655df9a7f5e5b9565;hpb=d48884911904c87e0143b70a1a102d4cf25d638b;p=sysdb.git

diff --git a/src/frontend/query.c b/src/frontend/query.c
index 585222d..39b5d53 100644
--- a/src/frontend/query.c
+++ b/src/frontend/query.c
@@ -31,6 +31,7 @@
 #include "frontend/connection-private.h"
 #include "frontend/parser.h"
 #include "utils/error.h"
+#include "utils/proto.h"
 #include "utils/strbuf.h"
 
 #include <errno.h>
@@ -75,6 +76,9 @@ sdb_fe_query(sdb_conn_t *conn)
 	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) {
@@ -88,7 +92,8 @@ sdb_fe_query(sdb_conn_t *conn)
 
 	switch (sdb_llist_len(parsetree)) {
 		case 0:
-			/* skipping empty command */
+			/* skipping empty command; send back an empty reply */
+			sdb_connection_send(conn, CONNECTION_DATA, 0, NULL);
 			break;
 		case 1:
 			node = SDB_CONN_NODE(sdb_llist_get(parsetree, 0));
@@ -99,7 +104,7 @@ sdb_fe_query(sdb_conn_t *conn)
 				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 "
+				sdb_log(SDB_LOG_WARNING, "frontend: Ignoring %zu command%s "
 						"in multi-statement query '%s'",
 						sdb_llist_len(parsetree) - 1,
 						sdb_llist_len(parsetree) == 2 ? "" : "s",
@@ -120,36 +125,82 @@ sdb_fe_query(sdb_conn_t *conn)
 int
 sdb_fe_fetch(sdb_conn_t *conn)
 {
-	char hostname[conn->cmd_len + 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);
+	char name[conn->cmd_len + 1];
+	int type;
+
+	if ((! conn) || (conn->cmd != CONNECTION_FETCH))
+		return -1;
+
+	if (conn->cmd_len < sizeof(type)) {
+		sdb_log(SDB_LOG_ERR, "frontend: Invalid command length %d for "
+				"FETCH command", conn->cmd_len);
+		sdb_strbuf_sprintf(conn->errbuf, "FETCH: Invalid command length %d",
+				conn->cmd_len);
+		return -1;
+	}
+
+	type = sdb_proto_get_int(conn->buf, 0);
+	strncpy(name, sdb_strbuf_string(conn->buf) + sizeof(type),
+			conn->cmd_len - sizeof(type));
+	name[sizeof(name) - 1] = '\0';
+	return sdb_fe_exec_fetch(conn, type, name, /* filter = */ NULL);
 } /* sdb_fe_fetch */
 
 int
 sdb_fe_list(sdb_conn_t *conn)
 {
-	return sdb_fe_exec_list(conn, /* filter = */ NULL);
+	int type = SDB_HOST;
+
+	if ((! conn) || (conn->cmd != CONNECTION_LIST))
+		return -1;
+
+	if (conn->cmd_len == sizeof(uint32_t))
+		type = sdb_proto_get_int(conn->buf, 0);
+	else if (conn->cmd_len) {
+		sdb_log(SDB_LOG_ERR, "frontend: Invalid command length %d for "
+				"LIST command", conn->cmd_len);
+		sdb_strbuf_sprintf(conn->errbuf, "LIST: Invalid command length %d",
+				conn->cmd_len);
+		return -1;
+	}
+	return sdb_fe_exec_list(conn, type, /* filter = */ NULL);
 } /* sdb_fe_list */
 
 int
 sdb_fe_lookup(sdb_conn_t *conn)
 {
 	sdb_store_matcher_t *m;
+	const char *matcher;
+	size_t matcher_len;
+
+	uint32_t type;
 	int status;
 
-	m = sdb_fe_parse_matcher(sdb_strbuf_string(conn->buf),
-			(int)conn->cmd_len);
+	if ((! conn) || (conn->cmd != CONNECTION_LOOKUP))
+		return -1;
+
+	if (conn->cmd_len < sizeof(type)) {
+		sdb_log(SDB_LOG_ERR, "frontend: Invalid command length %d for "
+				"LOOKUP command", conn->cmd_len);
+		sdb_strbuf_sprintf(conn->errbuf, "LOOKUP: Invalid command length %d",
+				conn->cmd_len);
+		return -1;
+	}
+	type = sdb_proto_get_int(conn->buf, 0);
+
+	matcher = sdb_strbuf_string(conn->buf) + sizeof(type);
+	matcher_len = conn->cmd_len - sizeof(type);
+	m = sdb_fe_parse_matcher(matcher, (int)matcher_len);
 	if (! m) {
-		char expr[conn->cmd_len + 1];
-		strncpy(expr, sdb_strbuf_string(conn->buf), conn->cmd_len);
+		char expr[matcher_len + 1];
+		strncpy(expr, matcher, sizeof(expr));
 		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);
+	status = sdb_fe_exec_lookup(conn, type, m, /* filter = */ NULL);
 	sdb_object_deref(SDB_OBJ(m));
 	return status;
 } /* sdb_fe_lookup */
@@ -157,24 +208,32 @@ sdb_fe_lookup(sdb_conn_t *conn)
 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_exec_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)->type,
+					CONN_FETCH(node)->name, filter);
 		case CONNECTION_LIST:
-			return sdb_fe_exec_list(conn, /* filter = */ NULL);
+			if (CONN_LIST(node)->filter)
+				filter = CONN_LIST(node)->filter->matcher;
+			return sdb_fe_exec_list(conn, CONN_LIST(node)->type, filter);
 		case CONNECTION_LOOKUP:
-		{
-			sdb_store_matcher_t *m = NULL, *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);
-		}
+			return sdb_fe_exec_lookup(conn,
+					CONN_LOOKUP(node)->type, m, filter);
+		case 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);
@@ -184,11 +243,21 @@ sdb_fe_exec(sdb_conn_t *conn, sdb_conn_node_t *node)
 } /* sdb_fe_exec */
 
 int
-sdb_fe_exec_fetch(sdb_conn_t *conn, const char *name,
+sdb_fe_exec_fetch(sdb_conn_t *conn, int type, const char *name,
 		sdb_store_matcher_t *filter)
 {
 	sdb_strbuf_t *buf;
 	sdb_store_obj_t *host;
+	uint32_t res_type = htonl(CONNECTION_FETCH);
+
+	/* XXX: support other types */
+	if (type != SDB_HOST) {
+		sdb_log(SDB_LOG_ERR, "frontend: Invalid object type %d "
+				"in FETCH command", type);
+		sdb_strbuf_sprintf(conn->errbuf,
+				"FETCH: Invalid object type %d", type);
+		return -1;
+	}
 
 	host = sdb_store_get_host(name);
 	if (! host) {
@@ -212,6 +281,7 @@ sdb_fe_exec_fetch(sdb_conn_t *conn, const char *name,
 		return -1;
 	}
 
+	sdb_strbuf_memcpy(buf, &res_type, sizeof(uint32_t));
 	if (sdb_store_host_tojson(host, buf, filter, /* flags = */ 0)) {
 		sdb_log(SDB_LOG_ERR, "frontend: Failed to serialize "
 				"host '%s' to JSON", name);
@@ -221,7 +291,7 @@ sdb_fe_exec_fetch(sdb_conn_t *conn, const char *name,
 		return -1;
 	}
 
-	sdb_connection_send(conn, CONNECTION_OK,
+	sdb_connection_send(conn, CONNECTION_DATA,
 			(uint32_t)sdb_strbuf_len(buf), sdb_strbuf_string(buf));
 	sdb_strbuf_destroy(buf);
 	sdb_object_deref(SDB_OBJ(host));
@@ -229,9 +299,28 @@ sdb_fe_exec_fetch(sdb_conn_t *conn, const char *name,
 } /* sdb_fe_exec_fetch */
 
 int
-sdb_fe_exec_list(sdb_conn_t *conn, sdb_store_matcher_t *filter)
+sdb_fe_exec_list(sdb_conn_t *conn, int type, sdb_store_matcher_t *filter)
 {
 	sdb_strbuf_t *buf;
+	uint32_t res_type = htonl(CONNECTION_LIST);
+
+	int flags;
+
+	if (type == SDB_HOST)
+		flags = SDB_SKIP_ALL;
+	else if (type == SDB_SERVICE)
+		flags = (SDB_SKIP_ALL & (~SDB_SKIP_SERVICES))
+			| SDB_SKIP_EMPTY_SERVICES;
+	else if (type == SDB_METRIC)
+		flags = (SDB_SKIP_ALL & (~SDB_SKIP_METRICS))
+			| SDB_SKIP_EMPTY_METRICS;
+	else {
+		sdb_log(SDB_LOG_ERR, "frontend: Invalid object type %d "
+				"for LIST command", type);
+		sdb_strbuf_sprintf(conn->errbuf,
+				"LIST: Invalid object type %d", type);
+		return -1;
+	}
 
 	buf = sdb_strbuf_create(1024);
 	if (! buf) {
@@ -245,7 +334,8 @@ sdb_fe_exec_list(sdb_conn_t *conn, sdb_store_matcher_t *filter)
 		return -1;
 	}
 
-	if (sdb_store_tojson(buf, filter, /* flags = */ SDB_SKIP_ALL)) {
+	sdb_strbuf_memcpy(buf, &res_type, sizeof(uint32_t));
+	if (sdb_store_tojson(buf, filter, flags)) {
 		sdb_log(SDB_LOG_ERR, "frontend: Failed to serialize "
 				"store to JSON");
 		sdb_strbuf_sprintf(conn->errbuf, "Out of memory");
@@ -253,17 +343,27 @@ sdb_fe_exec_list(sdb_conn_t *conn, sdb_store_matcher_t *filter)
 		return -1;
 	}
 
-	sdb_connection_send(conn, CONNECTION_OK,
+	sdb_connection_send(conn, CONNECTION_DATA,
 			(uint32_t)sdb_strbuf_len(buf), sdb_strbuf_string(buf));
 	sdb_strbuf_destroy(buf);
 	return 0;
 } /* sdb_fe_exec_list */
 
 int
-sdb_fe_exec_lookup(sdb_conn_t *conn, sdb_store_matcher_t *m,
-		sdb_store_matcher_t *filter)
+sdb_fe_exec_lookup(sdb_conn_t *conn, int type,
+		sdb_store_matcher_t *m, sdb_store_matcher_t *filter)
 {
 	tojson_data_t data = { NULL, filter, 0 };
+	uint32_t res_type = htonl(CONNECTION_LOOKUP);
+
+	/* XXX: support other types */
+	if (type != SDB_HOST) {
+		sdb_log(SDB_LOG_ERR, "frontend: Invalid object type %d "
+				"in LOOKUP command", type);
+		sdb_strbuf_sprintf(conn->errbuf,
+				"LOOKUP: Invalid object type %d", type);
+		return -1;
+	}
 
 	data.buf = sdb_strbuf_create(1024);
 	if (! data.buf) {
@@ -277,6 +377,7 @@ sdb_fe_exec_lookup(sdb_conn_t *conn, sdb_store_matcher_t *m,
 		return -1;
 	}
 
+	sdb_strbuf_memcpy(data.buf, &res_type, sizeof(uint32_t));
 	sdb_strbuf_append(data.buf, "[");
 
 	/* Let the JSON serializer handle the filter instead of the scanner. Else,
@@ -292,11 +393,44 @@ sdb_fe_exec_lookup(sdb_conn_t *conn, sdb_store_matcher_t *m,
 
 	sdb_strbuf_append(data.buf, "]");
 
-	sdb_connection_send(conn, CONNECTION_OK,
+	sdb_connection_send(conn, CONNECTION_DATA,
 			(uint32_t)sdb_strbuf_len(data.buf), sdb_strbuf_string(data.buf));
 	sdb_strbuf_destroy(data.buf);
 	return 0;
 } /* sdb_fe_exec_lookup */
 
+int
+sdb_fe_exec_timeseries(sdb_conn_t *conn,
+		const char *hostname, const char *metric,
+		sdb_timeseries_opts_t *opts)
+{
+	sdb_strbuf_t *buf;
+	uint32_t res_type = htonl(CONNECTION_TIMESERIES);
+
+	buf = sdb_strbuf_create(1024);
+	if (! buf) {
+		char errbuf[1024];
+		sdb_log(SDB_LOG_ERR, "frontend: Failed to create "
+				"buffer to handle TIMESERIES command: %s",
+				sdb_strerror(errno, errbuf, sizeof(errbuf)));
+
+		sdb_strbuf_sprintf(conn->errbuf, "Out of memory");
+		return -1;
+	}
+
+	sdb_strbuf_memcpy(buf, &res_type, sizeof(uint32_t));
+	if (sdb_store_fetch_timeseries(hostname, metric, opts, buf)) {
+		sdb_log(SDB_LOG_ERR, "frontend: Failed to fetch time-series");
+		sdb_strbuf_sprintf(conn->errbuf, "Failed to fetch time-series");
+		sdb_strbuf_destroy(buf);
+		return -1;
+	}
+
+	sdb_connection_send(conn, CONNECTION_DATA,
+			(uint32_t)sdb_strbuf_len(buf), sdb_strbuf_string(buf));
+	sdb_strbuf_destroy(buf);
+	return 0;
+} /* sdb_fe_exec_timeseries */
+
 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */