X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fconsumer.c;h=80e3137788ebc0c26da3302988a8ead922adf121;hb=3b33e9e731f2091e8aa13ea035c295ed6f101eac;hp=bc973ddf80e78e90d535036ac1de3427266ac8d3;hpb=e098433c90550d74288498f8c4474ef4c2daea68;p=lttng-tools.git diff --git a/src/bin/lttng-sessiond/consumer.c b/src/bin/lttng-sessiond/consumer.c index bc973ddf8..80e313778 100644 --- a/src/bin/lttng-sessiond/consumer.c +++ b/src/bin/lttng-sessiond/consumer.c @@ -1,5 +1,6 @@ /* * Copyright (C) 2012 - David Goulet + * 2018 - Jérémie Galarneau * * 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 @@ -1081,10 +1082,6 @@ int consumer_send_pipe(struct consumer_socket *consumer_sock, pipe_name = "channel monitor"; command_name = "SET_CHANNEL_MONITOR_PIPE"; break; - case LTTNG_CONSUMER_SET_CHANNEL_ROTATE_PIPE: - pipe_name = "channel rotate"; - command_name = "SET_CHANNEL_ROTATE_PIPE"; - break; default: ERR("Unexpected command received in %s (cmd = %d)", __func__, (int) cmd); @@ -1124,13 +1121,6 @@ int consumer_send_channel_monitor_pipe(struct consumer_socket *consumer_sock, LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE, pipe); } -int consumer_send_channel_rotate_pipe(struct consumer_socket *consumer_sock, - int pipe) -{ - return consumer_send_pipe(consumer_sock, - LTTNG_CONSUMER_SET_CHANNEL_ROTATE_PIPE, pipe); -} - /* * Set consumer subdirectory using the session name and a generated datetime if * needed. This is appended to the current subdirectory. @@ -1428,14 +1418,15 @@ end: /* * Ask the consumer to snapshot a specific channel using the key. * - * Return 0 on success or else a negative error. + * Returns LTTNG_OK on success or else an LTTng error code. */ -int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key, - struct snapshot_output *output, int metadata, uid_t uid, gid_t gid, - const char *session_path, int wait, uint64_t nb_packets_per_stream, - uint64_t trace_archive_id) +enum lttng_error_code consumer_snapshot_channel(struct consumer_socket *socket, + uint64_t key, struct snapshot_output *output, int metadata, + uid_t uid, gid_t gid, const char *session_path, int wait, + uint64_t nb_packets_per_stream, uint64_t trace_archive_id) { int ret; + enum lttng_error_code status = LTTNG_OK; struct lttcomm_consumer_msg msg; assert(socket); @@ -1463,7 +1454,7 @@ int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key, output->nb_snapshot, session_path); if (ret < 0) { - ret = -LTTNG_ERR_NOMEM; + status = LTTNG_ERR_INVALID; goto error; } else if (ret >= sizeof(msg.u.snapshot_channel.pathname)) { ERR("Snapshot path exceeds the maximal allowed length of %zu bytes (%i bytes required) with path \"%s/%s/%s-%s-%" PRIu64 "%s\"", @@ -1473,7 +1464,7 @@ int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key, output->name, output->datetime, output->nb_snapshot, session_path); - ret = -LTTNG_ERR_SNAPSHOT_FAIL; + status = LTTNG_ERR_SNAPSHOT_FAIL; goto error; } } else { @@ -1485,7 +1476,7 @@ int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key, output->nb_snapshot, session_path); if (ret < 0) { - ret = -LTTNG_ERR_NOMEM; + status = LTTNG_ERR_NOMEM; goto error; } else if (ret >= sizeof(msg.u.snapshot_channel.pathname)) { ERR("Snapshot path exceeds the maximal allowed length of %zu bytes (%i bytes required) with path \"%s/%s-%s-%" PRIu64 "%s\"", @@ -1493,7 +1484,7 @@ int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key, ret, output->consumer->dst.session_root_path, output->name, output->datetime, output->nb_snapshot, session_path); - ret = -LTTNG_ERR_SNAPSHOT_FAIL; + status = LTTNG_ERR_SNAPSHOT_FAIL; goto error; } @@ -1504,7 +1495,8 @@ int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key, S_IRWXU | S_IRWXG, uid, gid); if (ret < 0) { if (errno != EEXIST) { - ERR("Trace directory creation error"); + status = LTTNG_ERR_CREATE_DIR_FAIL; + PERROR("Trace directory creation error"); goto error; } } @@ -1515,12 +1507,20 @@ int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key, ret = consumer_send_msg(socket, &msg); pthread_mutex_unlock(socket->lock); if (ret < 0) { + switch (-ret) { + case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: + status = LTTNG_ERR_CHAN_NOT_FOUND; + break; + default: + status = LTTNG_ERR_SNAPSHOT_FAIL; + break; + } goto error; } error: health_code_update(); - return ret; + return status; } /* @@ -1649,8 +1649,7 @@ end: int consumer_rotate_channel(struct consumer_socket *socket, uint64_t key, uid_t uid, gid_t gid, struct consumer_output *output, char *domain_path, bool is_metadata_channel, - uint64_t new_chunk_id, - bool *rotate_pending_relay) + uint64_t new_chunk_id) { int ret; struct lttcomm_consumer_msg msg; @@ -1674,10 +1673,9 @@ int consumer_rotate_channel(struct consumer_socket *socket, uint64_t key, output->chunk_path, domain_path); if (ret < 0 || ret == sizeof(msg.u.rotate_channel.pathname)) { ERR("Failed to format channel path name when asking consumer to rotate channel"); - ret = -1; + ret = -LTTNG_ERR_INVALID; goto error; } - *rotate_pending_relay = true; } else { msg.u.rotate_channel.relayd_id = (uint64_t) -1ULL; ret = snprintf(msg.u.rotate_channel.pathname, @@ -1686,7 +1684,7 @@ int consumer_rotate_channel(struct consumer_socket *socket, uint64_t key, output->chunk_path, domain_path); if (ret < 0 || ret == sizeof(msg.u.rotate_channel.pathname)) { ERR("Failed to format channel path name when asking consumer to rotate channel"); - ret = -1; + ret = -LTTNG_ERR_INVALID; goto error; } } @@ -1694,9 +1692,16 @@ int consumer_rotate_channel(struct consumer_socket *socket, uint64_t key, health_code_update(); ret = consumer_send_msg(socket, &msg); if (ret < 0) { + switch (-ret) { + case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: + ret = -LTTNG_ERR_CHAN_NOT_FOUND; + break; + default: + ret = -LTTNG_ERR_ROTATION_FAIL_CONSUMER; + break; + } goto error; } - error: pthread_mutex_unlock(socket->lock); health_code_update(); @@ -1722,7 +1727,7 @@ int consumer_rotate_rename(struct consumer_socket *socket, uint64_t session_id, if (old_path_length >= sizeof(msg.u.rotate_rename.old_path)) { ERR("consumer_rotate_rename: old path length (%zu bytes) exceeds the maximal length allowed by the consumer protocol (%zu bytes)", old_path_length + 1, sizeof(msg.u.rotate_rename.old_path)); - ret = -1; + ret = -LTTNG_ERR_INVALID; goto error; } @@ -1730,7 +1735,7 @@ int consumer_rotate_rename(struct consumer_socket *socket, uint64_t session_id, if (new_path_length >= sizeof(msg.u.rotate_rename.new_path)) { ERR("consumer_rotate_rename: new path length (%zu bytes) exceeds the maximal length allowed by the consumer protocol (%zu bytes)", new_path_length + 1, sizeof(msg.u.rotate_rename.new_path)); - ret = -1; + ret = -LTTNG_ERR_INVALID; goto error; } @@ -1751,6 +1756,7 @@ int consumer_rotate_rename(struct consumer_socket *socket, uint64_t session_id, health_code_update(); ret = consumer_send_msg(socket, &msg); if (ret < 0) { + ret = -LTTNG_ERR_ROTATE_RENAME_FAIL_CONSUMER; goto error; } @@ -1760,14 +1766,57 @@ error: } /* - * Ask the relay if a rotation is still pending. Must be called with the socket - * lock held. + * Ask the consumer if a rotation is locally pending. Must be called with the + * socket lock held. * * Return 1 if the rotation is still pending, 0 if finished, a negative value * on error. */ -int consumer_rotate_pending_relay(struct consumer_socket *socket, - struct consumer_output *output, uint64_t session_id, +int consumer_check_rotation_pending_local(struct consumer_socket *socket, + uint64_t session_id, uint64_t chunk_id) +{ + int ret; + struct lttcomm_consumer_msg msg; + uint32_t pending = 0; + + assert(socket); + + DBG("Asking consumer to locally check for pending rotation for session %" PRIu64 ", chunk id %" PRIu64, + session_id, chunk_id); + + memset(&msg, 0, sizeof(msg)); + msg.cmd_type = LTTNG_CONSUMER_CHECK_ROTATION_PENDING_LOCAL; + msg.u.check_rotation_pending_local.session_id = session_id; + msg.u.check_rotation_pending_local.chunk_id = chunk_id; + + health_code_update(); + ret = consumer_send_msg(socket, &msg); + if (ret < 0) { + ret = -LTTNG_ERR_ROTATION_PENDING_LOCAL_FAIL_CONSUMER; + goto error; + } + + ret = consumer_socket_recv(socket, &pending, sizeof(pending)); + if (ret < 0) { + goto error; + } + + ret = pending; + +error: + health_code_update(); + return ret; +} + +/* + * Ask the consumer if a rotation is pending on the relayd. Must be called with + * the socket lock held. + * + * Return 1 if the rotation is still pending, 0 if finished, a negative value + * on error. + */ +int consumer_check_rotation_pending_relay(struct consumer_socket *socket, + const struct consumer_output *output, uint64_t session_id, uint64_t chunk_id) { int ret; @@ -1776,19 +1825,20 @@ int consumer_rotate_pending_relay(struct consumer_socket *socket, assert(socket); - DBG("Consumer rotate pending on relay for session %" PRIu64 ", chunk id %" PRIu64, + DBG("Asking consumer to check for pending rotation on relay for session %" PRIu64 ", chunk id %" PRIu64, session_id, chunk_id); assert(output->type == CONSUMER_DST_NET); memset(&msg, 0, sizeof(msg)); - msg.cmd_type = LTTNG_CONSUMER_ROTATE_PENDING_RELAY; - msg.u.rotate_pending_relay.session_id = session_id; - msg.u.rotate_pending_relay.relayd_id = output->net_seq_index; - msg.u.rotate_pending_relay.chunk_id = chunk_id; + msg.cmd_type = LTTNG_CONSUMER_CHECK_ROTATION_PENDING_RELAY; + msg.u.check_rotation_pending_relay.session_id = session_id; + msg.u.check_rotation_pending_relay.relayd_id = output->net_seq_index; + msg.u.check_rotation_pending_relay.chunk_id = chunk_id; health_code_update(); ret = consumer_send_msg(socket, &msg); if (ret < 0) { + ret = -LTTNG_ERR_ROTATION_PENDING_RELAY_FAIL_CONSUMER; goto error; } @@ -1828,7 +1878,7 @@ int consumer_mkdir(struct consumer_socket *socket, uint64_t session_id, ret = snprintf(msg.u.mkdir.path, sizeof(msg.u.mkdir.path), "%s", path); if (ret < 0 || ret >= sizeof(msg.u.mkdir.path)) { ERR("Format path"); - ret = -1; + ret = -LTTNG_ERR_INVALID; goto error; } @@ -1841,6 +1891,7 @@ int consumer_mkdir(struct consumer_socket *socket, uint64_t session_id, health_code_update(); ret = consumer_send_msg(socket, &msg); if (ret < 0) { + ret = -LTTNG_ERR_MKDIR_FAIL_CONSUMER; goto error; }