Consumer rotate stream

[lttng-tools.git] / src / common / consumer / consumer.h

diff --git a/src/common/consumer/consumer.h b/src/common/consumer/consumer.h
index 1187942577366f8f061ea1795b67b5e5e6e3ce0c..9e77ff999601f1ed3efddd67e5dcf378eb5c2760 100644 (file)
--- a/src/common/consumer/consumer.h
+++ b/src/common/consumer/consumer.h
@@ -229,6 +229,20 @@ struct lttng_consumer_channel {
        uint64_t lost_packets;
 
        bool streams_sent_to_relayd;
+
+       /*
+        * Account how many streams are waiting for their rotation to be
+        * complete. When this number reaches 0, we inform the session
+        * daemon that this channel has finished its rotation.
+        */
+       uint64_t nr_stream_rotate_pending;
+
+       /*
+        * The chunk id where we currently write the data. This value is sent
+        * to the relay when we add a stream and when a stream rotates. This
+        * allows to keep track of where each stream on the relay is writing.
+        */
+       uint64_t current_chunk_id;
 };
 
 /*
@@ -789,8 +803,11 @@ void consumer_del_stream_for_data(struct lttng_consumer_stream *stream);
 void consumer_add_metadata_stream(struct lttng_consumer_stream *stream);
 void consumer_del_stream_for_metadata(struct lttng_consumer_stream *stream);
 int consumer_create_index_file(struct lttng_consumer_stream *stream);
+int lttng_consumer_rotate_stream(struct lttng_consumer_local_data *ctx,
+               struct lttng_consumer_stream *stream);
 int lttng_consumer_rotate_rename(const char *current_path, const char *new_path,
                uid_t uid, gid_t gid, uint64_t relayd_id);
+void lttng_consumer_reset_stream_rotate_state(struct lttng_consumer_stream *stream);
 int lttng_consumer_mkdir(const char *path, uid_t uid, gid_t gid,
                uint64_t relayd_id);