#include <urcu/list.h>
#include <urcu/uatomic.h>
#include <sys/stat.h>
+#include <stdio.h>
#include <common/defaults.h>
#include <common/common.h>
return -ret;
}
-static
-int domain_mkdir(const struct consumer_output *output,
- const struct ltt_session *session,
- uid_t uid, gid_t gid)
-{
- struct consumer_socket *socket;
- struct lttng_ht_iter iter;
- int ret;
- char path[LTTNG_PATH_MAX];
-
- if (!output || !output->socks) {
- ERR("No consumer output found");
- ret = -1;
- goto end;
- }
-
- ret = snprintf(path, sizeof(path), "%s/%s%s",
- session_get_base_path(session),
- output->chunk_path,
- output->domain_subdir);
- if (ret < 0 || ret >= LTTNG_PATH_MAX) {
- ERR("Failed to format path new chunk domain path");
- ret = -1;
- goto end;
- }
-
- DBG("Domain mkdir %s for session %" PRIu64, path, session->id);
- rcu_read_lock();
- /*
- * We have to iterate to find a socket, but we only need to send the
- * rename command to one consumer, so we break after the first one.
- */
- cds_lfht_for_each_entry(output->socks->ht, &iter.iter, socket, node.node) {
- pthread_mutex_lock(socket->lock);
- ret = consumer_mkdir(socket, session->id, output, path, uid, gid);
- pthread_mutex_unlock(socket->lock);
- if (ret) {
- ERR("Failed to create directory at \"%s\"", path);
- ret = -1;
- goto end_unlock;
- }
- break;
- }
-
- ret = 0;
-
-end_unlock:
- rcu_read_unlock();
-end:
- return ret;
-}
-
/*
* Command LTTNG_START_TRACE processed by the client thread.
*
goto error;
}
- if (!session->has_been_started && session->output_traces) {
- ret = session_switch_trace_chunk(session, NULL, NULL);
- if (ret != LTTNG_OK) {
+ if (session->output_traces && !session->current_trace_chunk) {
+ struct lttng_trace_chunk *trace_chunk;
+
+ trace_chunk = session_create_new_trace_chunk(
+ session, NULL, NULL);
+ if (!trace_chunk) {
+ ret = LTTNG_ERR_CREATE_DIR_FAIL;
+ goto error;
+ }
+ assert(!session->current_trace_chunk);
+ ret = session_set_trace_chunk(session, trace_chunk, NULL);
+ lttng_trace_chunk_put(trace_chunk);
+ if (ret) {
+ ret = LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER;
goto error;
}
}
session->rotate_size = 0;
}
- if (session->current_archive_id != 0) {
- if (!session->rotated_after_last_stop) {
- ret = cmd_rotate_session(session, NULL);
- if (ret != LTTNG_OK) {
- ERR("Failed to perform an implicit rotation as part of the rotation: %s", lttng_strerror(-ret));
- }
- } else {
- /*
- * Rename the active chunk to ensure it has a name
- * of the form ts_begin-ts_end-id.
- *
- * Note that no trace data has been produced since
- * the last rotation; the directory should be
- * removed.
- */
- ret = rename_active_chunk(session);
- if (ret) {
- ERR("Failed to rename active chunk during the destruction of session \"%s\"",
- session->name);
- }
+ if (session->most_recent_chunk_id.is_set &&
+ session->most_recent_chunk_id.value != 0 &&
+ session->current_trace_chunk) {
+ ret = cmd_rotate_session(session, NULL);
+ if (ret != LTTNG_OK) {
+ ERR("Failed to perform an implicit rotation as part of the destruction of session \"%s\": %s",
+ session->name, lttng_strerror(-ret));
}
}
}
static
-enum lttng_error_code snapshot_record(const struct ltt_session *session,
+enum lttng_error_code snapshot_record(struct ltt_session *session,
const struct snapshot_output *snapshot_output, int wait)
{
+ int fmt_ret;
int64_t nb_packets_per_stream;
+ char snapshot_chunk_name[LTTNG_NAME_MAX];
enum lttng_error_code ret = LTTNG_OK;
+ struct lttng_trace_chunk *snapshot_trace_chunk;
+
+ fmt_ret = snprintf(snapshot_chunk_name, sizeof(snapshot_chunk_name),
+ "%s-%s-%" PRIu64,
+ snapshot_output->name,
+ snapshot_output->datetime,
+ snapshot_output->nb_snapshot);
+ if (fmt_ret < 0 || fmt_ret >= sizeof(snapshot_chunk_name)) {
+ ERR("Failed to format snapshot name");
+ ret = LTTNG_ERR_INVALID;
+ goto end;
+ }
+ DBG("Recording snapshot \"%s\" for session \"%s\" with chunk name \"%s\"",
+ snapshot_output->name, session->name,
+ snapshot_chunk_name);
+ snapshot_trace_chunk = session_create_new_trace_chunk(session,
+ snapshot_output_get_base_path(snapshot_output),
+ snapshot_chunk_name);
+ if (!snapshot_trace_chunk) {
+ ret = LTTNG_ERR_CREATE_DIR_FAIL;
+ goto end;
+ }
+ assert(!session->current_trace_chunk);
+ ret = session_set_trace_chunk(session, snapshot_trace_chunk, NULL);
+ lttng_trace_chunk_put(snapshot_trace_chunk);
+ snapshot_trace_chunk = NULL;
+ if (ret) {
+ ret = LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER;
+ goto end;
+ }
nb_packets_per_stream = get_session_nb_packets_per_stream(session,
snapshot_output->max_size);
goto end;
}
}
+
+ if (session_close_trace_chunk(session, session->current_trace_chunk)) {
+ /*
+ * Don't goto end; make sure the chunk is closed for the session
+ * to allow future snapshots.
+ */
+ ERR("Failed to close snapshot trace chunk of session \"%s\"",
+ session->name);
+ ret = -1;
+ }
+ if (session_set_trace_chunk(session, NULL, NULL)) {
+ ERR("Failed to release the current trace chunk of session \"%s\"",
+ session->name);
+ ret = -1;
+ }
end:
return ret;
}
struct lttng_rotate_session_return *rotate_return)
{
int ret;
+ uint64_t ongoing_rotation_chunk_id;
enum lttng_error_code cmd_ret = LTTNG_OK;
- size_t strf_ret;
- struct tm *timeinfo;
- char datetime[21];
- time_t now;
- /*
- * 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;
+ struct lttng_trace_chunk *chunk_being_archived = NULL;
+ struct lttng_trace_chunk *new_trace_chunk = NULL;
+ enum lttng_trace_chunk_status chunk_status;
assert(session);
goto end;
}
- /*
- * Unsupported feature in lttng-relayd before 2.11.
- */
+ /* Unsupported feature in lttng-relayd before 2.11. */
if (session->consumer->type == CONSUMER_DST_NET &&
(session->consumer->relay_major_version == 2 &&
session->consumer->relay_minor_version < 11)) {
goto end;
}
- /* Special case for the first rotation. */
- 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. */
- base_path = session_get_base_path(session);
- assert(base_path);
+ session->rotation_state = LTTNG_ROTATION_STATE_ONGOING;
- ret = lttng_strncpy(session->rotation_chunk.current_rotate_path,
- base_path,
- sizeof(session->rotation_chunk.current_rotate_path));
- if (ret) {
- ERR("Failed to copy session base path to current rotation chunk path");
- cmd_ret = LTTNG_ERR_UNK;
- goto end;
- }
- } else {
- /*
- * The currently active tracing path is now the folder we
- * want to rotate.
- */
- 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 the active tracing path to the current rotate path");
- cmd_ret = LTTNG_ERR_UNK;
- goto end;
+ if (session->active) {
+ new_trace_chunk = session_create_new_trace_chunk(session,
+ NULL, NULL);
+ if (!new_trace_chunk) {
+ cmd_ret = LTTNG_ERR_CREATE_DIR_FAIL;
+ goto error;
}
- }
- DBG("Current rotate path %s", session->rotation_chunk.current_rotate_path);
-
- /*
- * Channels created after this point will belong to the next
- * archive id.
- */
- session->current_archive_id++;
-
- now = time(NULL);
- if (now == (time_t) -1) {
- cmd_ret = LTTNG_ERR_UNK;
- 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;
-
- timeinfo = localtime(&now);
- if (!timeinfo) {
- PERROR("Failed to sample local time in rotate session command");
- cmd_ret = LTTNG_ERR_UNK;
- goto end;
- }
- strf_ret = strftime(datetime, sizeof(datetime), "%Y%m%dT%H%M%S%z",
- timeinfo);
- if (!strf_ret) {
- ERR("Failed to format local time timestamp in rotate session command");
- cmd_ret = LTTNG_ERR_UNK;
- goto end;
- }
+ }
- /* Current chunk directory, ex: 20170922-111754-42 */
- ret = snprintf(session->consumer->chunk_path,
- sizeof(session->consumer->chunk_path),
- "%s-%" PRIu64, datetime,
- session->current_archive_id + 1);
- if (ret < 0 || ret >= sizeof(session->consumer->chunk_path)) {
- ERR("Failed to format the new chunk's directory in rotate session command");
- cmd_ret = LTTNG_ERR_UNK;
+ /* The current trace chunk becomes the chunk being archived. */
+ ret = session_set_trace_chunk(session, new_trace_chunk,
+ &chunk_being_archived);
+ if (ret) {
+ cmd_ret = LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER;
goto error;
}
- /*
- * The active path for the next rotation/destroy.
- * Ex: ~/lttng-traces/auto-20170922-111748/20170922-111754-42
- */
- ret = snprintf(session->rotation_chunk.active_tracing_path,
- sizeof(session->rotation_chunk.active_tracing_path),
- "%s/%s",
- session_get_base_path(session),
- session->consumer->chunk_path);
- if (ret < 0 || ret >= sizeof(session->rotation_chunk.active_tracing_path)) {
- ERR("Failed to format active tracing path in rotate session command");
- cmd_ret = LTTNG_ERR_UNK;
+ assert(chunk_being_archived);
+ chunk_status = lttng_trace_chunk_get_id(chunk_being_archived,
+ &ongoing_rotation_chunk_id);
+ assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK);
+
+ chunk_status = lttng_trace_chunk_set_close_command(
+ chunk_being_archived,
+ LTTNG_TRACE_CHUNK_COMMAND_TYPE_MOVE_TO_COMPLETED);
+ if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ cmd_ret = LTTNG_ERR_FATAL;
goto error;
}
- /*
- * 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) {
- ret = lttng_strncpy(
- session->kernel_session->consumer->chunk_path,
- session->consumer->chunk_path,
- sizeof(session->kernel_session->consumer->chunk_path));
- if (ret) {
- ERR("Failed to copy current chunk directory to kernel session");
- cmd_ret = LTTNG_ERR_UNK;
- goto error;
- }
- /*
- * Create the new chunk folder, before the rotation begins so we
- * don't race with the consumer/tracer activity.
- */
- ret = domain_mkdir(session->kernel_session->consumer, session,
- session->kernel_session->uid,
- session->kernel_session->gid);
- if (ret) {
- cmd_ret = LTTNG_ERR_CREATE_DIR_FAIL;
- goto error;
- }
cmd_ret = kernel_rotate_session(session);
if (cmd_ret != LTTNG_OK) {
goto error;
}
}
if (session->ust_session) {
- ret = lttng_strncpy(
- session->ust_session->consumer->chunk_path,
- session->consumer->chunk_path,
- sizeof(session->ust_session->consumer->chunk_path));
- if (ret) {
- ERR("Failed to copy current chunk directory to userspace session");
- cmd_ret = LTTNG_ERR_UNK;
- goto error;
- }
- ret = domain_mkdir(session->ust_session->consumer, session,
- session->ust_session->uid,
- session->ust_session->gid);
- if (ret) {
- cmd_ret = LTTNG_ERR_CREATE_DIR_FAIL;
- goto error;
- }
cmd_ret = ust_app_rotate_session(session);
if (cmd_ret != LTTNG_OK) {
goto error;
}
}
+ ret = session_close_trace_chunk(session, chunk_being_archived);
+ if (ret) {
+ cmd_ret = LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER;
+ goto error;
+ }
+
ret = timer_session_rotation_pending_check_start(session,
DEFAULT_ROTATE_PENDING_TIMER);
if (ret) {
}
if (rotate_return) {
- rotate_return->rotation_id = session->current_archive_id;
+ rotate_return->rotation_id = ongoing_rotation_chunk_id;
}
+ session->chunk_being_archived = chunk_being_archived;
+ chunk_being_archived = NULL;
ret = notification_thread_command_session_rotation_ongoing(
notification_thread_handle,
session->name, session->uid, session->gid,
- session->current_archive_id - 1);
+ ongoing_rotation_chunk_id);
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);
+ session->name, ongoing_rotation_chunk_id);
end:
+ lttng_trace_chunk_put(new_trace_chunk);
+ lttng_trace_chunk_put(chunk_being_archived);
ret = (cmd_ret == LTTNG_OK) ? cmd_ret : -((int) cmd_ret);
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)) {
+ LTTNG_ROTATION_STATE_ERROR)) {
ERR("Failed to reset rotation state of session \"%s\"",
session->name);
}
*
* Check if the session has finished its rotation.
*
- * Return 0 on success or else a LTTNG_ERR code.
+ * Return LTTNG_OK on success or else an LTTNG_ERR code.
*/
int cmd_rotate_get_info(struct ltt_session *session,
struct lttng_rotation_get_info_return *info_return,
uint64_t rotation_id)
{
- int ret;
-
- assert(session);
+ enum lttng_error_code cmd_ret = LTTNG_OK;
+ enum lttng_rotation_state rotation_state;
DBG("Cmd rotate_get_info session %s, rotation id %" PRIu64, session->name,
- session->current_archive_id);
+ session->most_recent_chunk_id.value);
- if (session->current_archive_id != rotation_id) {
- info_return->status = (int32_t) LTTNG_ROTATION_STATE_EXPIRED;
- ret = LTTNG_OK;
- goto end;
+ if (session->chunk_being_archived) {
+ enum lttng_trace_chunk_status chunk_status;
+ uint64_t chunk_id;
+
+ chunk_status = lttng_trace_chunk_get_id(
+ session->chunk_being_archived,
+ &chunk_id);
+ assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK);
+
+ rotation_state = rotation_id == chunk_id ?
+ LTTNG_ROTATION_STATE_ONGOING :
+ LTTNG_ROTATION_STATE_EXPIRED;
+ } else {
+ if (session->last_archived_chunk_id.is_set &&
+ rotation_id != session->last_archived_chunk_id.value) {
+ rotation_state = LTTNG_ROTATION_STATE_EXPIRED;
+ } else {
+ rotation_state = session->rotation_state;
+ }
}
- switch (session->rotation_state) {
+ switch (rotation_state) {
+ case LTTNG_ROTATION_STATE_NO_ROTATION:
+ DBG("Reporting that no rotation has occured within the lifetime of session \"%s\"",
+ session->name);
+ goto end;
+ case LTTNG_ROTATION_STATE_EXPIRED:
+ DBG("Reporting that the rotation state of rotation id %" PRIu64 " of session \"%s\" has expired",
+ rotation_id, session->name);
+ break;
case LTTNG_ROTATION_STATE_ONGOING:
- DBG("Reporting that rotation id %" PRIu64 " of session %s is still pending",
+ DBG("Reporting that rotation id %" PRIu64 " of session \"%s\" is still pending",
rotation_id, session->name);
break;
case LTTNG_ROTATION_STATE_COMPLETED:
{
+ int fmt_ret;
+ char *chunk_path;
char *current_tracing_path_reply;
size_t current_tracing_path_reply_len;
+ DBG("Reporting that rotation id %" PRIu64 " of session \"%s\" is completed",
+ rotation_id, session->name);
+
switch (session_get_consumer_destination_type(session)) {
case CONSUMER_DST_LOCAL:
current_tracing_path_reply =
info_return->location.relay.protocol =
(int8_t) LTTNG_TRACE_ARCHIVE_LOCATION_RELAY_PROTOCOL_TYPE_TCP;
- ret = lttng_strncpy(info_return->location.relay.host,
+ fmt_ret = lttng_strncpy(info_return->location.relay.host,
session_get_net_consumer_hostname(session),
sizeof(info_return->location.relay.host));
- if (ret) {
- ERR("Failed to host name to rotate_get_info reply");
+ if (fmt_ret) {
+ ERR("Failed to copy host name to rotate_get_info reply");
info_return->status = LTTNG_ROTATION_STATUS_ERROR;
- ret = -LTTNG_ERR_UNK;
+ cmd_ret = LTTNG_ERR_SET_URL;
goto end;
}
default:
abort();
}
- ret = lttng_strncpy(current_tracing_path_reply,
- session->rotation_chunk.current_rotate_path,
- current_tracing_path_reply_len);
- if (ret) {
- ERR("Failed to copy current tracing path to rotate_get_info reply");
+ fmt_ret = asprintf(&chunk_path,
+ "%s/" DEFAULT_ARCHIVED_TRACE_CHUNKS_DIRECTORY "/%s",
+ session_get_base_path(session),
+ session->last_archived_chunk_name);
+ if (fmt_ret == -1) {
+ PERROR("Failed to format the path of the last archived trace chunk");
+ info_return->status = LTTNG_ROTATION_STATUS_ERROR;
+ cmd_ret = LTTNG_ERR_UNK;
+ goto end;
+ }
+
+ fmt_ret = lttng_strncpy(current_tracing_path_reply,
+ chunk_path, current_tracing_path_reply_len);
+ free(chunk_path);
+ if (fmt_ret) {
+ ERR("Failed to copy path of the last archived trace chunk to rotate_get_info reply");
info_return->status = LTTNG_ROTATION_STATUS_ERROR;
- ret = -LTTNG_ERR_UNK;
+ cmd_ret = LTTNG_ERR_UNK;
goto end;
}
break;
}
case LTTNG_ROTATION_STATE_ERROR:
- DBG("Reporting that an error occurred during rotation %" PRIu64 " of session %s",
+ DBG("Reporting that an error occurred during rotation %" PRIu64 " of session \"%s\"",
rotation_id, session->name);
break;
default:
abort();
}
- info_return->status = (int32_t) session->rotation_state;
- ret = LTTNG_OK;
+ cmd_ret = LTTNG_OK;
end:
- return ret;
+ info_return->status = (int32_t) rotation_state;
+ return cmd_ret;
}
/*
projects / lttng-tools.git / blobdiff