Fix: propagate archive id to the consumer daemon on stream creation

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

diff --git a/src/common/consumer/consumer.h b/src/common/consumer/consumer.h
index 1187942577366f8f061ea1795b67b5e5e6e3ce0c..190de54ed79f0c91e0e7abe6f5d9f864ed9795fc 100644 (file)
--- a/src/common/consumer/consumer.h
+++ b/src/common/consumer/consumer.h
@@ -63,7 +63,9 @@ enum lttng_consumer_command {
        LTTNG_CONSUMER_CLEAR_QUIESCENT_CHANNEL,
        LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE,
        LTTNG_CONSUMER_SET_CHANNEL_ROTATE_PIPE,
+       LTTNG_CONSUMER_ROTATE_CHANNEL,
        LTTNG_CONSUMER_ROTATE_RENAME,
+       LTTNG_CONSUMER_ROTATE_PENDING_RELAY,
        LTTNG_CONSUMER_MKDIR,
 };
 
@@ -229,6 +231,20 @@ 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;
 };
 
 /*
@@ -400,6 +416,11 @@ struct lttng_consumer_stream {
        uint64_t last_discarded_events;
        /* Copy of the sequence number of the last packet extracted. */
        uint64_t last_sequence_number;
+       /*
+        * Session's current trace archive id at the time of the creation of
+        * this stream.
+        */
+       uint64_t trace_archive_id;
        /*
         * Index file object of the index file for this stream.
         */
@@ -416,6 +437,14 @@ struct lttng_consumer_stream {
        pthread_cond_t metadata_rdv;
        pthread_mutex_t metadata_rdv_lock;
 
+       /*
+        * rotate_position represents the position in the ring-buffer that has to
+        * be flushed to disk to complete the ongoing rotation. When that position
+        * is reached, this tracefile can be closed and a new one is created in
+        * channel_read_only_attributes.path.
+        */
+       unsigned long rotate_position;
+
        /*
         * Read-only copies of channel values. We cannot safely access the
         * channel from a stream, so we need to have a local copy of these
@@ -427,6 +456,12 @@ struct lttng_consumer_stream {
                uint64_t tracefile_size;
        } channel_read_only_attributes;
 
+       /*
+        * Flag to inform the data or metadata thread that a stream is
+        * ready to be rotated.
+        */
+       bool rotate_ready;
+
        /* Indicate if the stream still has some data to be read. */
        unsigned int has_data:1;
        /*
@@ -443,7 +478,7 @@ struct consumer_relayd_sock_pair {
        /* Network sequence number. */
        uint64_t net_seq_idx;
        /* Number of stream associated with this relayd */
-       unsigned int refcount;
+       int refcount;
 
        /*
         * This flag indicates whether or not we should destroy this object. The
@@ -698,7 +733,8 @@ struct lttng_consumer_stream *consumer_allocate_stream(uint64_t channel_key,
                int cpu,
                int *alloc_ret,
                enum consumer_channel_type type,
-               unsigned int monitor);
+               unsigned int monitor,
+               uint64_t trace_archive_id);
 struct lttng_consumer_channel *consumer_allocate_channel(uint64_t key,
                uint64_t session_id,
                const char *pathname,
@@ -789,8 +825,19 @@ 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_channel(uint64_t key, const char *path,
+               uint64_t relayd_id, uint32_t metadata,
+               uint64_t new_chunk_id, struct lttng_consumer_local_data *ctx);
+int lttng_consumer_stream_is_rotate_ready(struct lttng_consumer_stream *stream);
+int lttng_consumer_rotate_stream(struct lttng_consumer_local_data *ctx,
+               struct lttng_consumer_stream *stream, bool *rotated);
+int lttng_consumer_rotate_ready_streams(uint64_t key,
+               struct lttng_consumer_local_data *ctx);
 int lttng_consumer_rotate_rename(const char *current_path, const char *new_path,
                uid_t uid, gid_t gid, uint64_t relayd_id);
+int lttng_consumer_rotate_pending_relay( uint64_t session_id,
+               uint64_t relayd_id, uint64_t chunk_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);