Fix: perform relayd socket pair cleanup on control socket error

[lttng-tools.git] / src / common / consumer / consumer-stream.c

diff --git a/src/common/consumer/consumer-stream.c b/src/common/consumer/consumer-stream.c
index 522b3cd5cd8ac0c45876c12dd7e344c8c7c27118..ca2c4536cb78f99758ba1a8ec2e2b81fead12f4f 100644 (file)
--- a/src/common/consumer/consumer-stream.c
+++ b/src/common/consumer/consumer-stream.c
@@ -73,12 +73,8 @@ void consumer_stream_relayd_close(struct lttng_consumer_stream *stream,
                        stream->next_net_seq_num - 1);
        pthread_mutex_unlock(&relayd->ctrl_sock_mutex);
        if (ret < 0) {
-               DBG("Unable to close stream on the relayd. Continuing");
-               /*
-                * Continue here. There is nothing we can do for the relayd.
-                * Chances are that the relayd has closed the socket so we just
-                * continue cleaning up.
-                */
+               ERR("Relayd send close stream failed. Cleaning up relayd %" PRIu64 ".", relayd->net_seq_idx);
+               lttng_consumer_cleanup_relayd(relayd);
        }
 
        /* Both conditions are met, we destroy the relayd. */
@@ -359,18 +355,33 @@ int consumer_stream_write_index(struct lttng_consumer_stream *stream,
                struct ctf_packet_index *element)
 {
        int ret;
-       struct consumer_relayd_sock_pair *relayd;
 
        assert(stream);
        assert(element);
 
        rcu_read_lock();
-       relayd = consumer_find_relayd(stream->net_seq_idx);
-       if (relayd) {
-               pthread_mutex_lock(&relayd->ctrl_sock_mutex);
-               ret = relayd_send_index(&relayd->control_sock, element,
+       if (stream->net_seq_idx != (uint64_t) -1ULL) {
+               struct consumer_relayd_sock_pair *relayd;
+               relayd = consumer_find_relayd(stream->net_seq_idx);
+               if (relayd) {
+                       pthread_mutex_lock(&relayd->ctrl_sock_mutex);
+                       ret = relayd_send_index(&relayd->control_sock, element,
                                stream->relayd_stream_id, stream->next_net_seq_num - 1);
-               pthread_mutex_unlock(&relayd->ctrl_sock_mutex);
+                       if (ret < 0) {
+                               /*
+                                * Communication error with lttng-relayd,
+                                * perform cleanup now
+                                */
+                               ERR("Relayd send index failed. Cleaning up relayd %" PRIu64 ".", relayd->net_seq_idx);
+                               lttng_consumer_cleanup_relayd(relayd);
+                               ret = -1;
+                       }
+                       pthread_mutex_unlock(&relayd->ctrl_sock_mutex);
+               } else {
+                       ERR("Stream %" PRIu64 " relayd ID %" PRIu64 " unknown. Can't write index.",
+                                       stream->key, stream->net_seq_idx);
+                       ret = -1;
+               }
        } else {
                if (lttng_index_file_write(stream->index_file, element)) {
                        ret = -1;