From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Thu, 12 Dec 2019 18:24:02 +0000 (-0500)
Subject: relayd: implement support for clear feature
X-Git-Tag: v2.12.0-rc1~119
X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=commitdiff_plain;h=f607fc46edbcace68ab34913b8d22c024c249146

relayd: implement support for clear feature

Implement support for the clear feature on relayd receiving end.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: Ice56dea0b7f59a4881f28fef84bcb0406e0afca6
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/src/bin/lttng-relayd/stream.c b/src/bin/lttng-relayd/stream.c
index 62b426360..4238d3b53 100644
--- a/src/bin/lttng-relayd/stream.c
+++ b/src/bin/lttng-relayd/stream.c
@@ -72,6 +72,11 @@ end:
 static void stream_complete_rotation(struct relay_stream *stream)
 {
 	DBG("Rotation completed for stream %" PRIu64, stream->stream_handle);
+	if (stream->ongoing_rotation.value.next_trace_chunk) {
+		tracefile_array_reset(stream->tfa);
+		tracefile_array_commit_seq(stream->tfa,
+				stream->index_received_seqcount);
+	}
 	lttng_trace_chunk_put(stream->trace_chunk);
 	stream->trace_chunk = stream->ongoing_rotation.value.next_trace_chunk;
 	stream->ongoing_rotation = (typeof(stream->ongoing_rotation)) {};
@@ -525,8 +530,10 @@ static int try_rotate_stream_index(struct relay_stream *stream)
 				stream->ongoing_rotation.value.packet_seq_num);
 		DBG("Rotating stream %" PRIu64 " index file",
 				stream->stream_handle);
-		ret = create_index_file(stream,
-				stream->ongoing_rotation.value.next_trace_chunk);
+		if (stream->index_file) {
+			lttng_index_file_put(stream->index_file);
+			stream->index_file = NULL;
+		}
 		stream->ongoing_rotation.value.index_rotated = true;
 
 		/*
@@ -868,6 +875,12 @@ int stream_set_pending_rotation(struct relay_stream *stream,
 		 * A metadata stream has no index; consider it already rotated.
 		 */
 		stream->ongoing_rotation.value.index_rotated = true;
+		if (next_trace_chunk) {
+			/*
+			 * The metadata will be received again in the new chunk.
+			 */
+			stream->metadata_received = 0;
+		}
 		ret = stream_rotate_data_file(stream);
 	} else {
 		ret = try_rotate_stream_index(stream);