#include "notification-thread-commands.h"
#include "rotate.h"
#include "rotation-thread.h"
-#include "sessiond-timer.h"
+#include "timer.h"
#include "agent-thread.h"
#include "cmd.h"
session->rotated_after_last_stop = false;
if (session->rotate_timer_period) {
- ret = sessiond_rotate_timer_start(session,
+ ret = timer_session_rotation_schedule_timer_start(session,
session->rotate_timer_period);
if (ret < 0) {
ERR("Failed to enable rotate timer");
return ret;
}
-static
-int rename_active_chunk(struct ltt_session *session)
-{
- int ret;
-
- session->current_archive_id++;
-
- /*
- * The currently active tracing path is now the folder we
- * want to rename.
- */
- ret = lttng_strncpy(session->rotation_chunk.current_rotate_path,
- session->rotation_chunk.active_tracing_path,
- sizeof(session->rotation_chunk.current_rotate_path));
- if (ret) {
- ERR("Failed to copy active tracing path");
- goto end;
- }
-
- ret = rename_complete_chunk(session, time(NULL));
- if (ret < 0) {
- ERR("Failed to rename current rotate path");
- goto end;
- }
-
- /*
- * We just renamed, the folder, we didn't do an actual rotation, so
- * the active tracing path is now the renamed folder and we have to
- * restore the rotate count.
- */
- ret = lttng_strncpy(session->rotation_chunk.active_tracing_path,
- session->rotation_chunk.current_rotate_path,
- sizeof(session->rotation_chunk.active_tracing_path));
- if (ret) {
- ERR("Failed to rename active session chunk tracing path");
- goto end;
- }
-end:
- session->current_archive_id--;
- return ret;
-}
-
/*
* Command LTTNG_STOP_TRACE processed by the client thread.
*/
goto error;
}
- if (session->rotate_relay_pending_timer_enabled) {
- sessiond_timer_rotate_pending_stop(session);
- }
-
- if (session->rotate_timer_enabled) {
- sessiond_rotate_timer_stop(session);
+ if (session->rotation_schedule_timer_enabled) {
+ if (timer_session_rotation_schedule_timer_stop(
+ session)) {
+ ERR("Failed to stop the \"rotation schedule\" timer of session %s",
+ session->name);
+ }
}
- if (session->current_archive_id > 0 && !session->rotate_pending) {
+ /*
+ * A rotation is still ongoing. The check timer will continue to wait
+ * for the rotation to complete. When the rotation finally completes,
+ * a check will be performed to rename the "active" chunk to the
+ * expected "timestamp_begin-timestamp_end" format.
+ */
+ if (session->current_archive_id > 0 &&
+ session->rotation_state != LTTNG_ROTATION_STATE_ONGOING) {
ret = rename_active_chunk(session);
if (ret) {
/*
DBG("Begin destroy session %s (id %" PRIu64 ")", session->name, session->id);
- if (session->rotate_relay_pending_timer_enabled) {
- sessiond_timer_rotate_pending_stop(session);
+ if (session->rotation_pending_check_timer_enabled) {
+ if (timer_session_rotation_pending_check_stop(session)) {
+ ERR("Failed to stop the \"rotation pending check\" timer of session %s",
+ session->name);
+ }
}
- if (session->rotate_timer_enabled) {
- sessiond_rotate_timer_stop(session);
+ if (session->rotation_schedule_timer_enabled) {
+ if (timer_session_rotation_schedule_timer_stop(
+ session)) {
+ ERR("Failed to stop the \"rotation schedule\" timer of session %s",
+ session->name);
+ }
}
if (session->rotate_size) {
}
}
- /*
- * A rotation is still pending, we have to wait.
- */
- if (session->rotate_pending) {
+ /* A rotation is still pending, we have to wait. */
+ if (session->rotation_state == LTTNG_ROTATION_STATE_ONGOING) {
DBG("Rotate still pending for session %s", session->name);
ret = 1;
goto error;
struct tm *timeinfo;
char datetime[21];
time_t now;
- bool ust_active = false;
+ /*
+ * Used to roll-back timestamps in case of failure to launch the
+ * rotation.
+ */
+ time_t original_last_chunk_start_ts, original_current_chunk_start_ts;
assert(session);
goto end;
}
- if (session->rotate_pending || session->rotate_pending_relay) {
+ if (session->rotation_state == LTTNG_ROTATION_STATE_ONGOING) {
ret = -LTTNG_ERR_ROTATION_PENDING;
- DBG("Rotate already in progress");
+ DBG("Refusing to launch a rotation; a rotation is already in progress for session %s",
+ session->name);
goto end;
}
if (session->current_archive_id == 0) {
const char *base_path = NULL;
+ assert(session->kernel_session || session->ust_session);
/* Either one of the two sessions is enough to get the root path. */
- if (session->kernel_session) {
- base_path = session_get_base_path(session);
- } else if (session->ust_session) {
- base_path = session_get_base_path(session);
- } else {
- assert(0);
- }
+ base_path = session_get_base_path(session);
assert(base_path);
+
ret = lttng_strncpy(session->rotation_chunk.current_rotate_path,
base_path,
sizeof(session->rotation_chunk.current_rotate_path));
}
DBG("Current rotate path %s", session->rotation_chunk.current_rotate_path);
- session->current_archive_id++;
- session->rotate_pending = true;
- session->rotation_state = LTTNG_ROTATION_STATE_ONGOING;
- ret = notification_thread_command_session_rotation_ongoing(
- notification_thread_handle,
- session->name, session->uid, session->gid,
- session->current_archive_id);
- if (ret != LTTNG_OK) {
- ERR("Failed to notify notification thread that a session rotation is ongoing for session %s",
- session->name);
- }
-
/*
- * Create the path name for the next chunk.
+ * Channels created after this point will belong to the next
+ * archive id.
*/
+ session->current_archive_id++;
+
now = time(NULL);
if (now == (time_t) -1) {
ret = -LTTNG_ERR_ROTATION_NOT_AVAILABLE;
goto end;
}
+
+ /* Sample chunk bounds for roll-back in case of error. */
+ original_last_chunk_start_ts = session->last_chunk_start_ts;
+ original_current_chunk_start_ts = session->current_chunk_start_ts;
+
session->last_chunk_start_ts = session->current_chunk_start_ts;
session->current_chunk_start_ts = now;
ret = -LTTNG_ERR_UNK;
goto end;
}
+
+ /*
+ * A rotation has a local step even if the destination is a relay
+ * daemon; the buffers must be consumed by the consumer daemon.
+ */
+ session->rotation_pending_local = true;
+ session->rotation_pending_relay =
+ session_get_consumer_destination_type(session) == CONSUMER_DST_NET;
+ session->rotation_state = LTTNG_ROTATION_STATE_ONGOING;
+
if (session->kernel_session) {
/*
* The active path for the next rotation/destroy.
if (ret < 0 || ret == sizeof(session->rotation_chunk.active_tracing_path)) {
ERR("Failed to format active kernel tracing path in rotate session command");
ret = -LTTNG_ERR_UNK;
- goto end;
+ goto error;
}
/*
* The sub-directory for the consumer
if (ret < 0 || ret == sizeof(session->kernel_session->consumer->chunk_path)) {
ERR("Failed to format the kernel consumer's sub-directory in rotate session command");
ret = -LTTNG_ERR_UNK;
- goto end;
+ goto error;
}
/*
* Create the new chunk folder, before the rotation begins so we don't
ERR("Failed to create kernel session tracing path at %s",
session->kernel_session->consumer->chunk_path);
ret = -LTTNG_ERR_CREATE_DIR_FAIL;
- goto end;
+ goto error;
}
ret = kernel_rotate_session(session);
if (ret != LTTNG_OK) {
ret = -ret;
- goto end;
+ goto error;
}
}
if (session->ust_session) {
if (ret < 0) {
ERR("Failed to format active UST tracing path in rotate session command");
ret = -LTTNG_ERR_UNK;
- goto end;
+ goto error;
}
ret = snprintf(session->ust_session->consumer->chunk_path,
PATH_MAX, "/%s-%" PRIu64, datetime,
if (ret < 0) {
ERR("Failed to format the UST consumer's sub-directory in rotate session command");
ret = -LTTNG_ERR_UNK;
- goto end;
+ goto error;
}
/*
* Create the new chunk folder, before the rotation begins so we don't
session->ust_session->gid);
if (ret) {
ret = -LTTNG_ERR_CREATE_DIR_FAIL;
- goto end;
+ goto error;
}
- ret = ust_app_rotate_session(session, &ust_active);
+ ret = ust_app_rotate_session(session);
if (ret != LTTNG_OK) {
- goto end;
+ goto error;
}
- /*
- * Handle the case where we did not start a rotation on any channel.
- * The consumer will never wake up the rotation thread to perform the
- * rename, so we have to do it here while we hold the session and
- * session_list locks.
- */
- if (!session->kernel_session && !ust_active) {
- struct lttng_trace_archive_location *location;
-
- session->rotate_pending = false;
- session->rotation_state = LTTNG_ROTATION_STATE_COMPLETED;
- ret = rename_complete_chunk(session, now);
- if (ret < 0) {
- ERR("Failed to rename completed rotation chunk");
- goto end;
- }
+ }
- /* Ownership of location is transferred. */
- location = session_get_trace_archive_location(session);
- ret = notification_thread_command_session_rotation_completed(
- notification_thread_handle,
- session->name,
- session->uid,
- session->gid,
- session->current_archive_id,
- location);
- if (ret != LTTNG_OK) {
- ERR("Failed to notify notification thread that rotation is complete for session %s",
- session->name);
- }
- }
+ ret = timer_session_rotation_pending_check_start(session,
+ DEFAULT_ROTATE_PENDING_TIMER);
+ if (ret) {
+ goto error;
}
if (!session->active) {
rotate_return->rotation_id = session->current_archive_id;
}
- DBG("Cmd rotate session %s, current_archive_id %" PRIu64 " sent",
- session->name, session->current_archive_id);
+ ret = notification_thread_command_session_rotation_ongoing(
+ notification_thread_handle,
+ session->name, session->uid, session->gid,
+ session->current_archive_id - 1);
+ if (ret != LTTNG_OK) {
+ ERR("Failed to notify notification thread that a session rotation is ongoing for session %s",
+ session->name);
+ }
+
+ DBG("Cmd rotate session %s, archive_id %" PRIu64 " sent",
+ session->name, session->current_archive_id - 1);
ret = LTTNG_OK;
end:
return ret;
+error:
+ session->last_chunk_start_ts = original_last_chunk_start_ts;
+ session->current_archive_id = original_current_chunk_start_ts;
+ if (session_reset_rotation_state(session,
+ LTTNG_ROTATION_STATE_NO_ROTATION)) {
+ ERR("Failed to reset rotation state of session \"%s\"",
+ session->name);
+ }
+ goto end;
}
/*
* Only start the timer if the session is active,
* otherwise it will be started when the session starts.
*/
- ret = sessiond_rotate_timer_start(session, new_value);
+ ret = timer_session_rotation_schedule_timer_start(
+ session, new_value);
if (ret) {
ERR("Failed to enable session rotation timer in ROTATION_SET_SCHEDULE command");
ret = LTTNG_ERR_UNK;
goto end;
}
} else {
- ret = sessiond_rotate_timer_stop(session);
+ ret = timer_session_rotation_schedule_timer_stop(
+ session);
if (ret) {
ERR("Failed to disable session rotation timer in ROTATION_SET_SCHEDULE command");
ret = LTTNG_ERR_UNK;
projects / lttng-tools.git / blobdiff