relayd: Implement get_configuration relayd protocol command

[lttng-tools.git] / src / common / sessiond-comm / relayd.h

diff --git a/src/common/sessiond-comm/relayd.h b/src/common/sessiond-comm/relayd.h
index 25d09980e751a22f0933103d6420834981092eab..492f3efae5ee722cc17bb3fb649028c1af06e136 100644 (file)
--- a/src/common/sessiond-comm/relayd.h
+++ b/src/common/sessiond-comm/relayd.h
@@ -25,6 +25,9 @@
 #include <lttng/lttng.h>
 #include <common/defaults.h>
 #include <common/index/ctf-index.h>
+#include <common/macros.h>
+#include <common/uuid.h>
+#include <common/optional.h>
 
 #define RELAYD_VERSION_COMM_MAJOR             VERSION_MAJOR
 #define RELAYD_VERSION_COMM_MINOR             VERSION_MINOR
@@ -84,6 +87,15 @@ struct lttcomm_relayd_add_stream_2_2 {
        uint64_t tracefile_count;
 } LTTNG_PACKED;
 
+struct lttcomm_relayd_add_stream_2_11 {
+       uint32_t channel_name_len;
+       uint32_t pathname_len;
+       uint64_t tracefile_size;
+       uint64_t tracefile_count;
+       uint64_t trace_chunk_id;
+       char names[];
+} LTTNG_PACKED;
+
 /*
  * Answer from an add stream command.
  */
@@ -194,12 +206,29 @@ struct lttcomm_relayd_create_session_2_4 {
 struct lttcomm_relayd_create_session_2_11 {
        uint32_t session_name_len;
        uint32_t hostname_len;
+       /* Optional, set to 0 to indicate it is not user-specified. */
+       uint32_t base_path_len;
        uint32_t live_timer;
        uint8_t snapshot;
-       /* Contains the session_name and hostname */
+       uint8_t session_name_contains_creation_time;
+       /* Sessiond instance UUID */
+       lttng_uuid sessiond_uuid;
+       /* Sessiond session id */
+        uint64_t session_id;
+       /* Session creation time, in seconds since UNIX Epoch. */
+       uint64_t creation_time;
+       LTTNG_OPTIONAL_COMM(uint64_t) LTTNG_PACKED current_chunk_id;
+       /* Contains the session_name, hostname, base_path. */
        char names[];
 } LTTNG_PACKED;
 
+struct lttcomm_relayd_create_session_reply_2_11 {
+       struct lttcomm_relayd_status_session generic;
+       /* Includes the '\0' terminator. */
+       uint32_t output_path_length;
+       char output_path[];
+} LTTNG_PACKED;
+
 /*
  * Used to ask the relay to reset the metadata trace file (regeneration).
  * Send the new version of the metadata (starts at 0).
@@ -209,38 +238,80 @@ struct lttcomm_relayd_reset_metadata {
        uint64_t version;
 } LTTNG_PACKED;
 
-struct lttcomm_relayd_rotate_stream {
+struct lttcomm_relayd_stream_rotation_position {
        uint64_t stream_id;
-       /* Ignored for metadata streams. */
+       /*
+        * Sequence number of the first packet belonging to the new
+        * "destination" trace chunk to which the stream is rotating.
+        *
+        * Ignored for metadata streams.
+        */
        uint64_t rotate_at_seq_num;
-       uint64_t new_chunk_id;
+} LTTNG_PACKED;
+
+struct lttcomm_relayd_rotate_streams {
+       uint32_t stream_count;
+       /*
+        * Streams can be rotated outside of a chunk but not be parented to
+        * a new chunk.
+        */
+       LTTNG_OPTIONAL_COMM(uint64_t) new_chunk_id;
+       /* `stream_count` positions follow. */
+       struct lttcomm_relayd_stream_rotation_position rotation_positions[];
+} LTTNG_PACKED;
+
+struct lttcomm_relayd_create_trace_chunk {
+       uint64_t chunk_id;
+       /* Seconds since EPOCH. */
+       uint64_t creation_timestamp;
        /* Includes trailing NULL. */
-       uint32_t pathname_length;
-       /* Must be the last member of this structure. */
-       char new_pathname[];
+       uint32_t override_name_length;
+       char override_name[];
+} LTTNG_PACKED;
+
+struct lttcomm_relayd_close_trace_chunk {
+       uint64_t chunk_id;
+       /* Seconds since EPOCH. */
+       uint64_t close_timestamp;
+       /* enum lttng_trace_chunk_command_type */
+       LTTNG_OPTIONAL_COMM(uint32_t) LTTNG_PACKED close_command;
 } LTTNG_PACKED;
 
-struct lttcomm_relayd_rotate_rename {
-       uint32_t old_path_length;
-       uint32_t new_path_length;
-       /* Concatenation of the old and new paths, separated by \0. */
-       char paths[];
+struct lttcomm_relayd_close_trace_chunk_reply {
+       struct lttcomm_relayd_generic_reply generic;
+       /* Includes trailing NULL. */
+       uint32_t path_length;
+       char path[];
 } LTTNG_PACKED;
 
-struct lttcomm_relayd_rotate_pending {
+struct lttcomm_relayd_trace_chunk_exists {
        uint64_t chunk_id;
 } LTTNG_PACKED;
 
-struct lttcomm_relayd_rotate_pending_reply {
+struct lttcomm_relayd_trace_chunk_exists_reply {
        struct lttcomm_relayd_generic_reply generic;
-       /* Valid values are [0, 1]. */
-       uint8_t is_pending;
+       uint8_t trace_chunk_exists;
 } LTTNG_PACKED;
 
-struct lttcomm_relayd_mkdir {
-       /* Includes trailing NULL */
-       uint32_t length;
-       char path[];
+enum lttcomm_relayd_configuration_flag {
+       /* The relay daemon (2.12) is configured to allow clear operations. */
+       LTTCOMM_RELAYD_CONFIGURATION_FLAG_CLEAR_ALLOWED = (1 << 0),
+};
+
+struct lttcomm_relayd_get_configuration {
+       uint64_t query_flags;
+} LTTNG_PACKED;
+
+/*
+ * Used to return a relay daemon's configuration in reply to the
+ * RELAYD_GET_CONFIGURATION command.
+ */
+struct lttcomm_relayd_get_configuration_reply {
+       struct lttcomm_relayd_generic_reply generic;
+       /* Set of lttcomm_relayd_configuration_flag. */
+       uint64_t relayd_configuration_flags;
+       /* Optional variable-length payload. */
+       char payload[];
 } LTTNG_PACKED;
 
 #endif /* _RELAYD_COMM */