#define _STREAM_H
/*
- * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com>
- * David Goulet <dgoulet@efficios.com>
- * 2015 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2013 Julien Desfossez <jdesfossez@efficios.com>
+ * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
+ * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License, version 2 only, as
- * published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
*
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 51
- * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <limits.h>
#include <common/hashtable/hashtable.h>
#include <common/trace-chunk.h>
+#include <common/optional.h>
+#include <common/buffer-view.h>
#include "session.h"
-#include "stream-fd.h"
#include "tracefile-array.h"
+struct lttcomm_relayd_index;
+
+struct relay_stream_rotation {
+ /*
+ * Indicates if the stream's data and index have been rotated. A
+ * rotation is considered completed when both rotations have occurred.
+ */
+ bool data_rotated;
+ bool index_rotated;
+ /*
+ * Packet sequence number of the first packet of the new trace chunk to
+ * which the stream is rotating.
+ */
+ uint64_t packet_seq_num;
+ /*
+ * Monotonically increasing previous network sequence number of first
+ * data packet of the new trace chunk to which the stream is rotating.
+ */
+ uint64_t prev_data_net_seq;
+ struct lttng_trace_chunk *next_trace_chunk;
+};
+
/*
* Represents a stream in the relay
*/
/* seq num to encounter before closing. */
uint64_t last_net_seq_num;
- /* FD on which to write the stream data. */
- struct stream_fd *stream_fd;
+ struct fs_handle *file;
/* index file on which to write the index data. */
struct lttng_index_file *index_file;
char *path_name;
- /*
- * prev_path_name is only used for session rotation support.
- * It is essentially used to work around the fact that index
- * files are always created from the 'data' connection.
- *
- * Hence, it is possible to receive a ROTATE_STREAM command
- * which affects the stream's path_name before the creation of
- * an index file. In this situation, the index file of the
- * 'previous' chunk would be created in the new destination folder.
- *
- * It would then be unlinked when the actual index of the new chunk
- * is created.
- */
- char *prev_path_name;
char *channel_name;
/* On-disk circular buffer of tracefiles. */
uint64_t tracefile_size;
uint64_t tracefile_size_current;
+ /* Max number of trace files for this stream. */
uint64_t tracefile_count;
+ /*
+ * Index of the currently active file for this stream's on-disk
+ * ring buffer.
+ */
+ uint64_t tracefile_current_index;
+ /*
+ * Indicates that the on-disk buffer has wrapped around. Stream
+ * files shall be unlinked before being opened after this has occurred.
+ */
+ bool tracefile_wrapped_around;
/*
* Position in the tracefile where we have the full index also on disk.
*/
uint64_t index_received_seqcount;
+ /*
+ * Packet sequence number of the last received packet index.
+ * Only populated when interacting with CTF_INDEX 1.1+.
+ */
+ LTTNG_OPTIONAL(uint64_t) received_packet_seq_num;
+
/*
* Tracefile array is an index of the stream trace files,
* indexed by position. It allows keeping track of the oldest
bool data_pending_check_done;
/* Is this stream a metadata stream ? */
- int32_t is_metadata;
+ bool is_metadata;
/* Amount of metadata received (bytes). */
uint64_t metadata_received;
*/
bool in_recv_list;
struct cds_list_head recv_node;
- bool published; /* Protected by session lock. */
+ /* Protected by session lock. */
+ bool published;
+ /* Notified viewer that no new metadata is available. */
+ bool no_new_metadata_notified;
/*
* Node of stream within global stream hash table.
*/
bool in_stream_ht; /* is stream in stream hash table. */
struct rcu_head rcu_node; /* For call_rcu teardown. */
/*
- * When we have written the data and index corresponding to this
- * seq_num, rotate the tracefile (session rotation). The path_name is
- * already up-to-date.
- * This is set to -1ULL when no rotation is pending.
- *
- * Always access with stream lock held.
- */
- uint64_t rotate_at_seq_num;
- /*
- * When rotate_at_seq_num != -1ULL, meaning that a rotation is ongoing,
- * data_rotated and index_rotated respectively indicate if the stream's
- * data and index have been rotated. A rotation is considered completed
- * when both rotations have occurred.
- */
- bool data_rotated;
- bool index_rotated;
- /*
- * `trace_chunk` is the trace chunk to which the file currently
- * being produced (if any) belongs.
+ * The trace chunk to which the file currently being produced (if any)
+ * belongs.
*/
struct lttng_trace_chunk *trace_chunk;
+ LTTNG_OPTIONAL(struct relay_stream_rotation) ongoing_rotation;
};
struct relay_stream *stream_create(struct ctf_trace *trace,
struct relay_stream *stream_get_by_id(uint64_t stream_id);
bool stream_get(struct relay_stream *stream);
void stream_put(struct relay_stream *stream);
+int stream_rotate_output_files(struct relay_session *session,
+ struct relay_stream *stream);
+int stream_set_pending_rotation(struct relay_stream *stream,
+ struct lttng_trace_chunk *next_trace_chunk,
+ uint64_t rotation_sequence_number);
void try_stream_close(struct relay_stream *stream);
void stream_publish(struct relay_stream *stream);
+int stream_init_packet(struct relay_stream *stream, size_t packet_size,
+ bool *file_rotated);
+int stream_write(struct relay_stream *stream,
+ const struct lttng_buffer_view *packet, size_t padding_len);
+/* Called after the reception of a complete data packet. */
+int stream_update_index(struct relay_stream *stream, uint64_t net_seq_num,
+ bool rotate_index, bool *flushed, uint64_t total_size);
+int stream_complete_packet(struct relay_stream *stream,
+ size_t packet_total_size, uint64_t sequence_number,
+ bool index_flushed);
+/* Index info is in host endianness. */
+int stream_add_index(struct relay_stream *stream,
+ const struct lttcomm_relayd_index *index_info);
+int stream_reset_file(struct relay_stream *stream);
+
void print_relay_streams(void);
#endif /* _STREAM_H */
projects / lttng-tools.git / blobdiff