/*
* Copyright (C) 2012 - David Goulet <dgoulet@efficios.com>
+ * 2018 - Jérémie Galarneau <jeremie.galarneau@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
* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#define _GNU_SOURCE
+#define _LGPL_SOURCE
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
+#include <inttypes.h>
#include <common/common.h>
#include <common/defaults.h>
#include <common/uri.h>
+#include <common/relayd/relayd.h>
+#include <common/string-utils/format.h>
#include "consumer.h"
+#include "health-sessiond.h"
+#include "ust-app.h"
+#include "utils.h"
+#include "lttng-sessiond.h"
+
+/*
+ * Return allocated full pathname of the session using the consumer trace path
+ * and subdir if available.
+ *
+ * The caller can safely free(3) the returned value. On error, NULL is
+ * returned.
+ */
+char *setup_channel_trace_path(struct consumer_output *consumer,
+ const char *session_path, size_t *consumer_path_offset)
+{
+ int ret;
+ char *pathname;
+
+ assert(consumer);
+ assert(session_path);
+
+ health_code_update();
+
+ /*
+ * Allocate the string ourself to make sure we never exceed
+ * LTTNG_PATH_MAX.
+ */
+ pathname = zmalloc(LTTNG_PATH_MAX);
+ if (!pathname) {
+ goto error;
+ }
+
+ /* Get correct path name destination */
+ if (consumer->type == CONSUMER_DST_NET &&
+ consumer->relay_major_version == 2 &&
+ consumer->relay_minor_version < 11) {
+ ret = snprintf(pathname, LTTNG_PATH_MAX, "%s%s/%s/%s",
+ consumer->dst.net.base_dir,
+ consumer->chunk_path, consumer->domain_subdir,
+ session_path);
+ *consumer_path_offset = 0;
+ } else {
+ ret = snprintf(pathname, LTTNG_PATH_MAX, "%s/%s",
+ consumer->domain_subdir, session_path);
+ *consumer_path_offset = strlen(consumer->domain_subdir) + 1;
+ }
+ DBG3("Consumer trace path relative to current trace chunk: \"%s\"",
+ pathname);
+ if (ret < 0) {
+ PERROR("Failed to format channel path");
+ goto error;
+ } else if (ret >= LTTNG_PATH_MAX) {
+ ERR("Truncation occurred while formatting channel path");
+ goto error;
+ }
+
+ return pathname;
+error:
+ free(pathname);
+ return NULL;
+}
+
+/*
+ * Send a data payload using a given consumer socket of size len.
+ *
+ * The consumer socket lock MUST be acquired before calling this since this
+ * function can change the fd value.
+ *
+ * Return 0 on success else a negative value on error.
+ */
+int consumer_socket_send(struct consumer_socket *socket, void *msg, size_t len)
+{
+ int fd;
+ ssize_t size;
+
+ assert(socket);
+ assert(socket->fd_ptr);
+ assert(msg);
+
+ /* Consumer socket is invalid. Stopping. */
+ fd = *socket->fd_ptr;
+ if (fd < 0) {
+ goto error;
+ }
+
+ size = lttcomm_send_unix_sock(fd, msg, len);
+ if (size < 0) {
+ /* The above call will print a PERROR on error. */
+ DBG("Error when sending data to consumer on sock %d", fd);
+ /*
+ * At this point, the socket is not usable anymore thus closing it and
+ * setting the file descriptor to -1 so it is not reused.
+ */
+
+ /* This call will PERROR on error. */
+ (void) lttcomm_close_unix_sock(fd);
+ *socket->fd_ptr = -1;
+ goto error;
+ }
+
+ return 0;
+
+error:
+ return -1;
+}
+
+/*
+ * Receive a data payload using a given consumer socket of size len.
+ *
+ * The consumer socket lock MUST be acquired before calling this since this
+ * function can change the fd value.
+ *
+ * Return 0 on success else a negative value on error.
+ */
+int consumer_socket_recv(struct consumer_socket *socket, void *msg, size_t len)
+{
+ int fd;
+ ssize_t size;
+
+ assert(socket);
+ assert(socket->fd_ptr);
+ assert(msg);
+
+ /* Consumer socket is invalid. Stopping. */
+ fd = *socket->fd_ptr;
+ if (fd < 0) {
+ goto error;
+ }
+
+ size = lttcomm_recv_unix_sock(fd, msg, len);
+ if (size <= 0) {
+ /* The above call will print a PERROR on error. */
+ DBG("Error when receiving data from the consumer socket %d", fd);
+ /*
+ * At this point, the socket is not usable anymore thus closing it and
+ * setting the file descriptor to -1 so it is not reused.
+ */
+
+ /* This call will PERROR on error. */
+ (void) lttcomm_close_unix_sock(fd);
+ *socket->fd_ptr = -1;
+ goto error;
+ }
+
+ return 0;
+
+error:
+ return -1;
+}
/*
* Receive a reply command status message from the consumer. Consumer socket
assert(sock);
- ret = lttcomm_recv_unix_sock(sock->fd, &reply, sizeof(reply));
- if (ret <= 0) {
- if (ret == 0) {
- /* Orderly shutdown. Don't return 0 which means success. */
- ret = -1;
- }
- /* The above call will print a PERROR on error. */
- DBG("Fail to receive status reply on sock %d", sock->fd);
+ ret = consumer_socket_recv(sock, &reply, sizeof(reply));
+ if (ret < 0) {
goto end;
}
- if (reply.ret_code == LTTNG_OK) {
+ if (reply.ret_code == LTTCOMM_CONSUMERD_SUCCESS) {
/* All good. */
ret = 0;
} else {
ret = -reply.ret_code;
- DBG("Consumer ret code %d", reply.ret_code);
+ DBG("Consumer ret code %d", ret);
+ }
+
+end:
+ return ret;
+}
+
+/*
+ * Once the ASK_CHANNEL command is sent to the consumer, the channel
+ * information are sent back. This call receives that data and populates key
+ * and stream_count.
+ *
+ * On success return 0 and both key and stream_count are set. On error, a
+ * negative value is sent back and both parameters are untouched.
+ */
+int consumer_recv_status_channel(struct consumer_socket *sock,
+ uint64_t *key, unsigned int *stream_count)
+{
+ int ret;
+ struct lttcomm_consumer_status_channel reply;
+
+ assert(sock);
+ assert(stream_count);
+ assert(key);
+
+ ret = consumer_socket_recv(sock, &reply, sizeof(reply));
+ if (ret < 0) {
+ goto end;
+ }
+
+ /* An error is possible so don't touch the key and stream_count. */
+ if (reply.ret_code != LTTCOMM_CONSUMERD_SUCCESS) {
+ ret = -1;
+ goto end;
}
+ *key = reply.key;
+ *stream_count = reply.stream_count;
+ ret = 0;
+
end:
return ret;
}
assert(consumer);
assert(sock);
- DBG2("Sending destroy relayd command to consumer...");
-
- /* Bail out if consumer is disabled */
- if (!consumer->enabled) {
- ret = LTTNG_OK;
- DBG3("Consumer is disabled");
- goto error;
- }
+ DBG2("Sending destroy relayd command to consumer sock %d", *sock->fd_ptr);
+ memset(&msg, 0, sizeof(msg));
msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD;
msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index;
pthread_mutex_lock(sock->lock);
- ret = lttcomm_send_unix_sock(sock->fd, &msg, sizeof(msg));
+ ret = consumer_socket_send(sock, &msg, sizeof(msg));
if (ret < 0) {
- /* Indicate that the consumer is probably closing at this point. */
- DBG("send consumer destroy relayd command");
- goto error_send;
+ goto error;
}
/* Don't check the return value. The caller will do it. */
DBG2("Consumer send destroy relayd command done");
-error_send:
- pthread_mutex_unlock(sock->lock);
error:
+ pthread_mutex_unlock(sock->lock);
return ret;
}
assert(consumer);
/* Destroy any relayd connection */
- if (consumer && consumer->type == CONSUMER_DST_NET) {
+ if (consumer->type == CONSUMER_DST_NET) {
rcu_read_lock();
cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket,
node.node) {
socket = consumer_find_socket(data->cmd_sock, output);
rcu_read_unlock();
if (socket == NULL) {
- socket = consumer_allocate_socket(data->cmd_sock);
+ socket = consumer_allocate_socket(&data->cmd_sock);
if (socket == NULL) {
ret = -1;
goto error;
rcu_read_unlock();
}
+ socket->type = data->type;
+
DBG3("Consumer socket created (fd: %d) and added to output",
data->cmd_sock);
return ret;
}
+/*
+ * Return the consumer socket from the given consumer output with the right
+ * bitness. On error, returns NULL.
+ *
+ * The caller MUST acquire a rcu read side lock and keep it until the socket
+ * object reference is not needed anymore.
+ */
+struct consumer_socket *consumer_find_socket_by_bitness(int bits,
+ const struct consumer_output *consumer)
+{
+ int consumer_fd;
+ struct consumer_socket *socket = NULL;
+
+ switch (bits) {
+ case 64:
+ consumer_fd = uatomic_read(&ust_consumerd64_fd);
+ break;
+ case 32:
+ consumer_fd = uatomic_read(&ust_consumerd32_fd);
+ break;
+ default:
+ assert(0);
+ goto end;
+ }
+
+ socket = consumer_find_socket(consumer_fd, consumer);
+ if (!socket) {
+ ERR("Consumer socket fd %d not found in consumer obj %p",
+ consumer_fd, consumer);
+ }
+
+end:
+ return socket;
+}
+
/*
* Find a consumer_socket in a consumer_output hashtable. Read side lock must
* be acquired before calling this function and across use of the
* returned consumer_socket.
*/
struct consumer_socket *consumer_find_socket(int key,
- struct consumer_output *consumer)
+ const struct consumer_output *consumer)
{
struct lttng_ht_iter iter;
struct lttng_ht_node_ulong *node;
/*
* Allocate a new consumer_socket and return the pointer.
*/
-struct consumer_socket *consumer_allocate_socket(int fd)
+struct consumer_socket *consumer_allocate_socket(int *fd)
{
struct consumer_socket *socket = NULL;
+ assert(fd);
+
socket = zmalloc(sizeof(struct consumer_socket));
if (socket == NULL) {
PERROR("zmalloc consumer socket");
goto error;
}
- socket->fd = fd;
- lttng_ht_node_init_ulong(&socket->node, fd);
+ socket->fd_ptr = fd;
+ lttng_ht_node_init_ulong(&socket->node, *fd);
error:
return socket;
}
/*
- * Delte consumer socket to consumer output object. Read side lock must be
+ * Delete consumer socket to consumer output object. Read side lock must be
* acquired before calling this function.
*/
void consumer_del_socket(struct consumer_socket *sock,
* consumer was registered,
*/
if (sock->registered) {
- DBG3("Consumer socket was registered. Closing fd %d", sock->fd);
- lttcomm_close_unix_sock(sock->fd);
+ DBG3("Consumer socket was registered. Closing fd %d", *sock->fd_ptr);
+ lttcomm_close_unix_sock(*sock->fd_ptr);
}
call_rcu(&sock->node.head, destroy_socket_rcu);
/* By default, consumer output is enabled */
output->enabled = 1;
output->type = type;
- output->net_seq_index = -1;
+ output->net_seq_index = (uint64_t) -1ULL;
+ urcu_ref_init(&output->ref);
output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
}
/*
- * Delete the consumer_output object from the list and free the ptr.
+ * Iterate over the consumer output socket hash table and destroy them. The
+ * socket file descriptor are only closed if the consumer output was
+ * registered meaning it's an external consumer.
*/
-void consumer_destroy_output(struct consumer_output *obj)
+void consumer_destroy_output_sockets(struct consumer_output *obj)
{
- if (obj == NULL) {
+ struct lttng_ht_iter iter;
+ struct consumer_socket *socket;
+
+ if (!obj->socks) {
return;
}
- if (obj->socks) {
- struct lttng_ht_iter iter;
- struct consumer_socket *socket;
+ rcu_read_lock();
+ cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) {
+ consumer_del_socket(socket, obj);
+ consumer_destroy_socket(socket);
+ }
+ rcu_read_unlock();
+}
- rcu_read_lock();
- cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) {
- consumer_del_socket(socket, obj);
- consumer_destroy_socket(socket);
- }
- rcu_read_unlock();
+/*
+ * Delete the consumer_output object from the list and free the ptr.
+ *
+ * Should *NOT* be called with RCU read-side lock held.
+ */
+static void consumer_release_output(struct urcu_ref *ref)
+{
+ struct consumer_output *obj =
+ caa_container_of(ref, struct consumer_output, ref);
+ consumer_destroy_output_sockets(obj);
+
+ if (obj->socks) {
/* Finally destroy HT */
- lttng_ht_destroy(obj->socks);
+ ht_cleanup_push(obj->socks);
}
free(obj);
}
+/*
+ * Get the consumer_output object.
+ */
+void consumer_output_get(struct consumer_output *obj)
+{
+ urcu_ref_get(&obj->ref);
+}
+
+/*
+ * Put the consumer_output object.
+ *
+ * Should *NOT* be called with RCU read-side lock held.
+ */
+void consumer_output_put(struct consumer_output *obj)
+{
+ if (!obj) {
+ return;
+ }
+ urcu_ref_put(&obj->ref, consumer_release_output);
+}
+
/*
* Copy consumer output and returned the newly allocated copy.
+ *
+ * Should *NOT* be called with RCU read-side lock held.
*/
-struct consumer_output *consumer_copy_output(struct consumer_output *obj)
+struct consumer_output *consumer_copy_output(struct consumer_output *src)
{
- struct lttng_ht *tmp_ht_ptr;
- struct lttng_ht_iter iter;
- struct consumer_socket *socket, *copy_sock;
+ int ret;
struct consumer_output *output;
- assert(obj);
+ assert(src);
- output = consumer_create_output(obj->type);
+ output = consumer_create_output(src->type);
if (output == NULL) {
- goto error;
+ goto end;
+ }
+ output->enabled = src->enabled;
+ output->net_seq_index = src->net_seq_index;
+ memcpy(output->domain_subdir, src->domain_subdir,
+ sizeof(output->domain_subdir));
+ output->snapshot = src->snapshot;
+ output->relay_major_version = src->relay_major_version;
+ output->relay_minor_version = src->relay_minor_version;
+ output->relay_allows_clear = src->relay_allows_clear;
+ memcpy(&output->dst, &src->dst, sizeof(output->dst));
+ ret = consumer_copy_sockets(output, src);
+ if (ret < 0) {
+ goto error_put;
}
- /* Avoid losing the HT reference after the memcpy() */
- tmp_ht_ptr = output->socks;
+end:
+ return output;
+
+error_put:
+ consumer_output_put(output);
+ return NULL;
+}
+
+/*
+ * Copy consumer sockets from src to dst.
+ *
+ * Return 0 on success or else a negative value.
+ */
+int consumer_copy_sockets(struct consumer_output *dst,
+ struct consumer_output *src)
+{
+ int ret = 0;
+ struct lttng_ht_iter iter;
+ struct consumer_socket *socket, *copy_sock;
- memcpy(output, obj, sizeof(struct consumer_output));
+ assert(dst);
+ assert(src);
- /* Putting back the HT pointer and start copying socket(s). */
- output->socks = tmp_ht_ptr;
+ rcu_read_lock();
+ cds_lfht_for_each_entry(src->socks->ht, &iter.iter, socket, node.node) {
+ /* Ignore socket that are already there. */
+ copy_sock = consumer_find_socket(*socket->fd_ptr, dst);
+ if (copy_sock) {
+ continue;
+ }
- cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) {
/* Create new socket object. */
- copy_sock = consumer_allocate_socket(socket->fd);
+ copy_sock = consumer_allocate_socket(socket->fd_ptr);
if (copy_sock == NULL) {
- goto malloc_error;
+ rcu_read_unlock();
+ ret = -ENOMEM;
+ goto error;
}
copy_sock->registered = socket->registered;
+ /*
+ * This is valid because this lock is shared accross all consumer
+ * object being the global lock of the consumer data structure of the
+ * session daemon.
+ */
copy_sock->lock = socket->lock;
- consumer_add_socket(copy_sock, output);
+ consumer_add_socket(copy_sock, dst);
}
+ rcu_read_unlock();
error:
- return output;
-
-malloc_error:
- consumer_destroy_output(output);
- return NULL;
+ return ret;
}
/*
- * Set network URI to the consumer output object.
+ * Set network URI to the consumer output.
*
* Return 0 on success. Return 1 if the URI were equal. Else, negative value on
* error.
*/
-int consumer_set_network_uri(struct consumer_output *obj,
+int consumer_set_network_uri(const struct ltt_session *session,
+ struct consumer_output *output,
struct lttng_uri *uri)
{
int ret;
- char tmp_path[PATH_MAX];
- char hostname[HOST_NAME_MAX];
struct lttng_uri *dst_uri = NULL;
/* Code flow error safety net. */
- assert(obj);
+ assert(output);
assert(uri);
switch (uri->stype) {
case LTTNG_STREAM_CONTROL:
- dst_uri = &obj->dst.net.control;
- obj->dst.net.control_isset = 1;
+ dst_uri = &output->dst.net.control;
+ output->dst.net.control_isset = 1;
if (uri->port == 0) {
/* Assign default port. */
uri->port = DEFAULT_NETWORK_CONTROL_PORT;
+ } else {
+ if (output->dst.net.data_isset && uri->port ==
+ output->dst.net.data.port) {
+ ret = -LTTNG_ERR_INVALID;
+ goto error;
+ }
}
DBG3("Consumer control URI set with port %d", uri->port);
break;
case LTTNG_STREAM_DATA:
- dst_uri = &obj->dst.net.data;
- obj->dst.net.data_isset = 1;
+ dst_uri = &output->dst.net.data;
+ output->dst.net.data_isset = 1;
if (uri->port == 0) {
/* Assign default port. */
uri->port = DEFAULT_NETWORK_DATA_PORT;
+ } else {
+ if (output->dst.net.control_isset && uri->port ==
+ output->dst.net.control.port) {
+ ret = -LTTNG_ERR_INVALID;
+ goto error;
+ }
}
DBG3("Consumer data URI set with port %d", uri->port);
break;
default:
ERR("Set network uri type unknown %d", uri->stype);
+ ret = -LTTNG_ERR_INVALID;
goto error;
}
}
/* URIs were not equal, replacing it. */
- memset(dst_uri, 0, sizeof(struct lttng_uri));
memcpy(dst_uri, uri, sizeof(struct lttng_uri));
- obj->type = CONSUMER_DST_NET;
+ output->type = CONSUMER_DST_NET;
+ if (dst_uri->stype != LTTNG_STREAM_CONTROL) {
+ /* Only the control uri needs to contain the path. */
+ goto end;
+ }
- /* Handle subdir and add hostname in front. */
- if (dst_uri->stype == LTTNG_STREAM_CONTROL) {
- /* Get hostname to append it in the pathname */
- ret = gethostname(hostname, sizeof(hostname));
- if (ret < 0) {
- PERROR("gethostname. Fallback on default localhost");
- strncpy(hostname, "localhost", sizeof(hostname));
+ /*
+ * If the user has specified a subdir as part of the control
+ * URL, the session's base output directory is:
+ * /RELAYD_OUTPUT_PATH/HOSTNAME/USER_SPECIFIED_DIR
+ *
+ * Hence, the "base_dir" from which all stream files and
+ * session rotation chunks are created takes the form
+ * /HOSTNAME/USER_SPECIFIED_DIR
+ *
+ * If the user has not specified an output directory as part of
+ * the control URL, the base output directory has the form:
+ * /RELAYD_OUTPUT_PATH/HOSTNAME/SESSION_NAME-CREATION_TIME
+ *
+ * Hence, the "base_dir" from which all stream files and
+ * session rotation chunks are created takes the form
+ * /HOSTNAME/SESSION_NAME-CREATION_TIME
+ *
+ * Note that automatically generated session names already
+ * contain the session's creation time. In that case, the
+ * creation time is omitted to prevent it from being duplicated
+ * in the final directory hierarchy.
+ */
+ if (*uri->subdir) {
+ if (strstr(uri->subdir, "../")) {
+ ERR("Network URI subdirs are not allowed to walk up the path hierarchy");
+ ret = -LTTNG_ERR_INVALID;
+ goto error;
}
- hostname[sizeof(hostname) - 1] = '\0';
-
- /* Setup consumer subdir if none present in the control URI */
- if (strlen(dst_uri->subdir) == 0) {
- ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s",
- hostname, obj->subdir);
+ ret = snprintf(output->dst.net.base_dir,
+ sizeof(output->dst.net.base_dir),
+ "/%s/%s/", session->hostname, uri->subdir);
+ } else {
+ if (session->has_auto_generated_name) {
+ ret = snprintf(output->dst.net.base_dir,
+ sizeof(output->dst.net.base_dir),
+ "/%s/%s/", session->hostname,
+ session->name);
} else {
- ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s",
- hostname, dst_uri->subdir);
- }
- if (ret < 0) {
- PERROR("snprintf set consumer uri subdir");
- goto error;
+ char session_creation_datetime[16];
+ size_t strftime_ret;
+ struct tm *timeinfo;
+
+ timeinfo = localtime(&session->creation_time);
+ if (!timeinfo) {
+ ret = -LTTNG_ERR_FATAL;
+ goto error;
+ }
+ strftime_ret = strftime(session_creation_datetime,
+ sizeof(session_creation_datetime),
+ "%Y%m%d-%H%M%S", timeinfo);
+ if (strftime_ret == 0) {
+ ERR("Failed to format session creation timestamp while setting network URI");
+ ret = -LTTNG_ERR_FATAL;
+ goto error;
+ }
+ ret = snprintf(output->dst.net.base_dir,
+ sizeof(output->dst.net.base_dir),
+ "/%s/%s-%s/", session->hostname,
+ session->name,
+ session_creation_datetime);
}
-
- strncpy(obj->subdir, tmp_path, sizeof(obj->subdir));
- DBG3("Consumer set network uri subdir path %s", tmp_path);
}
+ if (ret >= sizeof(output->dst.net.base_dir)) {
+ ret = -LTTNG_ERR_INVALID;
+ ERR("Truncation occurred while setting network output base directory");
+ goto error;
+ } else if (ret == -1) {
+ ret = -LTTNG_ERR_INVALID;
+ PERROR("Error occurred while setting network output base directory");
+ goto error;
+ }
+
+ DBG3("Consumer set network uri base_dir path %s",
+ output->dst.net.base_dir);
+end:
return 0;
equal:
return 1;
error:
- return -1;
+ return ret;
}
/*
* Send file descriptor to consumer via sock.
+ *
+ * The consumer socket lock must be held by the caller.
*/
-int consumer_send_fds(struct consumer_socket *sock, int *fds, size_t nb_fd)
+int consumer_send_fds(struct consumer_socket *sock, const int *fds,
+ size_t nb_fd)
{
int ret;
assert(fds);
assert(sock);
assert(nb_fd > 0);
+ assert(pthread_mutex_trylock(sock->lock) == EBUSY);
- ret = lttcomm_send_fds_unix_sock(sock->fd, fds, nb_fd);
+ ret = lttcomm_send_fds_unix_sock(*sock->fd_ptr, fds, nb_fd);
if (ret < 0) {
/* The above call will print a PERROR on error. */
- DBG("Error when sending consumer fds on sock %d", sock->fd);
+ DBG("Error when sending consumer fds on sock %d", *sock->fd_ptr);
goto error;
}
ret = consumer_recv_status_reply(sock);
-
error:
return ret;
}
/*
- * Consumer send channel communication message structure to consumer.
+ * Consumer send communication message structure to consumer.
+ *
+ * The consumer socket lock must be held by the caller.
*/
-int consumer_send_channel(struct consumer_socket *sock,
+int consumer_send_msg(struct consumer_socket *sock,
struct lttcomm_consumer_msg *msg)
{
int ret;
assert(msg);
assert(sock);
- assert(sock->fd >= 0);
+ assert(pthread_mutex_trylock(sock->lock) == EBUSY);
- ret = lttcomm_send_unix_sock(sock->fd, msg,
- sizeof(struct lttcomm_consumer_msg));
+ ret = consumer_socket_send(sock, msg, sizeof(struct lttcomm_consumer_msg));
if (ret < 0) {
- /* The above call will print a PERROR on error. */
- DBG("Error when sending consumer channel on sock %d", sock->fd);
goto error;
}
}
/*
- * Init channel communication message structure.
+ * Consumer send channel communication message structure to consumer.
+ *
+ * The consumer socket lock must be held by the caller.
*/
-void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg,
- enum lttng_consumer_command cmd,
- int channel_key,
- uint64_t max_sb_size,
- uint64_t mmap_len,
- const char *name,
- unsigned int nb_init_streams)
+int consumer_send_channel(struct consumer_socket *sock,
+ struct lttcomm_consumer_msg *msg)
{
- assert(msg);
+ int ret;
- /* TODO: Args validation */
+ assert(msg);
+ assert(sock);
- /* Zeroed structure */
- memset(msg, 0, sizeof(struct lttcomm_consumer_msg));
+ ret = consumer_send_msg(sock, msg);
+ if (ret < 0) {
+ goto error;
+ }
- /* Send channel */
- msg->cmd_type = cmd;
- msg->u.channel.channel_key = channel_key;
- msg->u.channel.max_sb_size = max_sb_size;
- msg->u.channel.mmap_len = mmap_len;
- msg->u.channel.nb_init_streams = nb_init_streams;
+error:
+ return ret;
}
/*
- * Init stream communication message structure.
+ * Populate the given consumer msg structure with the ask_channel command
+ * information.
*/
-void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg,
- enum lttng_consumer_command cmd,
- int channel_key,
- int stream_key,
- uint32_t state,
- enum lttng_event_output output,
- uint64_t mmap_len,
- uid_t uid,
- gid_t gid,
- int net_index,
- unsigned int metadata_flag,
- const char *name,
+void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg,
+ uint64_t subbuf_size,
+ uint64_t num_subbuf,
+ int overwrite,
+ unsigned int switch_timer_interval,
+ unsigned int read_timer_interval,
+ unsigned int live_timer_interval,
+ unsigned int monitor_timer_interval,
+ int output,
+ int type,
+ uint64_t session_id,
const char *pathname,
- unsigned int session_id)
+ const char *name,
+ uint64_t relayd_id,
+ uint64_t key,
+ unsigned char *uuid,
+ uint32_t chan_id,
+ uint64_t tracefile_size,
+ uint64_t tracefile_count,
+ uint64_t session_id_per_pid,
+ unsigned int monitor,
+ uint32_t ust_app_uid,
+ int64_t blocking_timeout,
+ const char *root_shm_path,
+ const char *shm_path,
+ struct lttng_trace_chunk *trace_chunk,
+ const struct lttng_credentials *buffer_credentials)
{
assert(msg);
+ /* Zeroed structure */
memset(msg, 0, sizeof(struct lttcomm_consumer_msg));
+ msg->u.ask_channel.buffer_credentials.uid = UINT32_MAX;
+ msg->u.ask_channel.buffer_credentials.gid = UINT32_MAX;
+
+ if (trace_chunk) {
+ uint64_t chunk_id;
+ enum lttng_trace_chunk_status chunk_status;
+
+ chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id);
+ assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK);
+ LTTNG_OPTIONAL_SET(&msg->u.ask_channel.chunk_id, chunk_id);
+ }
+ msg->u.ask_channel.buffer_credentials.uid = buffer_credentials->uid;
+ msg->u.ask_channel.buffer_credentials.gid = buffer_credentials->gid;
+
+ msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION;
+ msg->u.ask_channel.subbuf_size = subbuf_size;
+ msg->u.ask_channel.num_subbuf = num_subbuf ;
+ msg->u.ask_channel.overwrite = overwrite;
+ msg->u.ask_channel.switch_timer_interval = switch_timer_interval;
+ msg->u.ask_channel.read_timer_interval = read_timer_interval;
+ msg->u.ask_channel.live_timer_interval = live_timer_interval;
+ msg->u.ask_channel.monitor_timer_interval = monitor_timer_interval;
+ msg->u.ask_channel.output = output;
+ msg->u.ask_channel.type = type;
+ msg->u.ask_channel.session_id = session_id;
+ msg->u.ask_channel.session_id_per_pid = session_id_per_pid;
+ msg->u.ask_channel.relayd_id = relayd_id;
+ msg->u.ask_channel.key = key;
+ msg->u.ask_channel.chan_id = chan_id;
+ msg->u.ask_channel.tracefile_size = tracefile_size;
+ msg->u.ask_channel.tracefile_count = tracefile_count;
+ msg->u.ask_channel.monitor = monitor;
+ msg->u.ask_channel.ust_app_uid = ust_app_uid;
+ msg->u.ask_channel.blocking_timeout = blocking_timeout;
+
+ memcpy(msg->u.ask_channel.uuid, uuid, sizeof(msg->u.ask_channel.uuid));
+
+ if (pathname) {
+ strncpy(msg->u.ask_channel.pathname, pathname,
+ sizeof(msg->u.ask_channel.pathname));
+ msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname)-1] = '\0';
+ }
- /* TODO: Args validation */
+ strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name));
+ msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0';
- msg->cmd_type = cmd;
+ if (root_shm_path) {
+ strncpy(msg->u.ask_channel.root_shm_path, root_shm_path,
+ sizeof(msg->u.ask_channel.root_shm_path));
+ msg->u.ask_channel.root_shm_path[sizeof(msg->u.ask_channel.root_shm_path) - 1] = '\0';
+ }
+ if (shm_path) {
+ strncpy(msg->u.ask_channel.shm_path, shm_path,
+ sizeof(msg->u.ask_channel.shm_path));
+ msg->u.ask_channel.shm_path[sizeof(msg->u.ask_channel.shm_path) - 1] = '\0';
+ }
+}
+
+/*
+ * Init channel communication message structure.
+ */
+void consumer_init_add_channel_comm_msg(struct lttcomm_consumer_msg *msg,
+ uint64_t channel_key,
+ uint64_t session_id,
+ const char *pathname,
+ uid_t uid,
+ gid_t gid,
+ uint64_t relayd_id,
+ const char *name,
+ unsigned int nb_init_streams,
+ enum lttng_event_output output,
+ int type,
+ uint64_t tracefile_size,
+ uint64_t tracefile_count,
+ unsigned int monitor,
+ unsigned int live_timer_interval,
+ unsigned int monitor_timer_interval,
+ struct lttng_trace_chunk *trace_chunk)
+{
+ assert(msg);
+
+ /* Zeroed structure */
+ memset(msg, 0, sizeof(struct lttcomm_consumer_msg));
+
+ if (trace_chunk) {
+ uint64_t chunk_id;
+ enum lttng_trace_chunk_status chunk_status;
+
+ chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id);
+ assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK);
+ LTTNG_OPTIONAL_SET(&msg->u.channel.chunk_id, chunk_id);
+ }
+
+ /* Send channel */
+ msg->cmd_type = LTTNG_CONSUMER_ADD_CHANNEL;
+ msg->u.channel.channel_key = channel_key;
+ msg->u.channel.session_id = session_id;
+ msg->u.channel.relayd_id = relayd_id;
+ msg->u.channel.nb_init_streams = nb_init_streams;
+ msg->u.channel.output = output;
+ msg->u.channel.type = type;
+ msg->u.channel.tracefile_size = tracefile_size;
+ msg->u.channel.tracefile_count = tracefile_count;
+ msg->u.channel.monitor = monitor;
+ msg->u.channel.live_timer_interval = live_timer_interval;
+ msg->u.channel.monitor_timer_interval = monitor_timer_interval;
+
+ strncpy(msg->u.channel.pathname, pathname,
+ sizeof(msg->u.channel.pathname));
+ msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0';
+
+ strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name));
+ msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0';
+}
+
+/*
+ * Init stream communication message structure.
+ */
+void consumer_init_add_stream_comm_msg(struct lttcomm_consumer_msg *msg,
+ uint64_t channel_key,
+ uint64_t stream_key,
+ int32_t cpu)
+{
+ assert(msg);
+
+ memset(msg, 0, sizeof(struct lttcomm_consumer_msg));
+
+ msg->cmd_type = LTTNG_CONSUMER_ADD_STREAM;
msg->u.stream.channel_key = channel_key;
msg->u.stream.stream_key = stream_key;
- msg->u.stream.state = state;
- msg->u.stream.output = output;
- msg->u.stream.mmap_len = mmap_len;
- msg->u.stream.uid = uid;
- msg->u.stream.gid = gid;
- msg->u.stream.net_index = net_index;
- msg->u.stream.metadata_flag = metadata_flag;
- msg->u.stream.session_id = (uint64_t) session_id;
- strncpy(msg->u.stream.name, name, sizeof(msg->u.stream.name));
- msg->u.stream.name[sizeof(msg->u.stream.name) - 1] = '\0';
- strncpy(msg->u.stream.path_name, pathname,
- sizeof(msg->u.stream.path_name));
- msg->u.stream.path_name[sizeof(msg->u.stream.path_name) - 1] = '\0';
+ msg->u.stream.cpu = cpu;
+}
+
+void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg,
+ enum lttng_consumer_command cmd,
+ uint64_t channel_key, uint64_t net_seq_idx)
+{
+ assert(msg);
+
+ memset(msg, 0, sizeof(struct lttcomm_consumer_msg));
+
+ msg->cmd_type = cmd;
+ msg->u.sent_streams.channel_key = channel_key;
+ msg->u.sent_streams.net_seq_idx = net_seq_idx;
}
/*
*/
int consumer_send_stream(struct consumer_socket *sock,
struct consumer_output *dst, struct lttcomm_consumer_msg *msg,
- int *fds, size_t nb_fd)
+ const int *fds, size_t nb_fd)
{
int ret;
assert(msg);
assert(dst);
assert(sock);
+ assert(fds);
- switch (dst->type) {
- case CONSUMER_DST_NET:
- /* Consumer should send the stream on the network. */
- msg->u.stream.net_index = dst->net_seq_index;
- break;
- case CONSUMER_DST_LOCAL:
- /* Add stream file name to stream path */
- strncat(msg->u.stream.path_name, "/",
- sizeof(msg->u.stream.path_name) -
- strlen(msg->u.stream.path_name) - 1);
- strncat(msg->u.stream.path_name, msg->u.stream.name,
- sizeof(msg->u.stream.path_name) -
- strlen(msg->u.stream.path_name) - 1);
- msg->u.stream.path_name[sizeof(msg->u.stream.path_name) - 1] = '\0';
- /* Indicate that the stream is NOT network */
- msg->u.stream.net_index = -1;
- break;
- default:
- ERR("Consumer unknown output type (%d)", dst->type);
- ret = -1;
- goto error;
- }
-
- /* Send on socket */
- ret = lttcomm_send_unix_sock(sock->fd, msg,
- sizeof(struct lttcomm_consumer_msg));
- if (ret < 0) {
- /* The above call will print a PERROR on error. */
- DBG("Error when sending consumer stream on sock %d", sock->fd);
- goto error;
- }
-
- ret = consumer_recv_status_reply(sock);
+ ret = consumer_send_msg(sock, msg);
if (ret < 0) {
goto error;
}
/*
* Send relayd socket to consumer associated with a session name.
*
+ * The consumer socket lock must be held by the caller.
+ *
* On success return positive value. On error, negative value.
*/
int consumer_send_relayd_socket(struct consumer_socket *consumer_sock,
- struct lttcomm_sock *sock, struct consumer_output *consumer,
- enum lttng_stream_type type, unsigned int session_id)
+ struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer,
+ enum lttng_stream_type type, uint64_t session_id,
+ const char *session_name, const char *hostname,
+ const char *base_path, int session_live_timer,
+ const uint64_t *current_chunk_id, time_t session_creation_time,
+ bool session_name_contains_creation_time)
{
int ret;
struct lttcomm_consumer_msg msg;
/* Code flow error. Safety net. */
- assert(sock);
+ assert(rsock);
assert(consumer);
assert(consumer_sock);
+ memset(&msg, 0, sizeof(msg));
/* Bail out if consumer is disabled */
if (!consumer->enabled) {
ret = LTTNG_OK;
goto error;
}
+ if (type == LTTNG_STREAM_CONTROL) {
+ char output_path[LTTNG_PATH_MAX] = {};
+ uint64_t relayd_session_id;
+
+ ret = relayd_create_session(rsock,
+ &relayd_session_id,
+ session_name, hostname, base_path,
+ session_live_timer,
+ consumer->snapshot, session_id,
+ sessiond_uuid, current_chunk_id,
+ session_creation_time,
+ session_name_contains_creation_time,
+ output_path);
+ if (ret < 0) {
+ /* Close the control socket. */
+ (void) relayd_close(rsock);
+ goto error;
+ }
+ msg.u.relayd_sock.relayd_session_id = relayd_session_id;
+ DBG("Created session on relay, output path reply: %s",
+ output_path);
+ }
+
msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET;
/*
* Assign network consumer output index using the temporary consumer since
msg.u.relayd_sock.net_index = consumer->net_seq_index;
msg.u.relayd_sock.type = type;
msg.u.relayd_sock.session_id = session_id;
- memcpy(&msg.u.relayd_sock.sock, sock, sizeof(msg.u.relayd_sock.sock));
+ memcpy(&msg.u.relayd_sock.sock, rsock, sizeof(msg.u.relayd_sock.sock));
- DBG3("Sending relayd sock info to consumer on %d", consumer_sock->fd);
- ret = lttcomm_send_unix_sock(consumer_sock->fd, &msg, sizeof(msg));
+ DBG3("Sending relayd sock info to consumer on %d", *consumer_sock->fd_ptr);
+ ret = consumer_send_msg(consumer_sock, &msg);
if (ret < 0) {
- /* The above call will print a PERROR on error. */
- DBG("Error when sending relayd sockets on sock %d", sock->fd);
goto error;
}
- ret = consumer_recv_status_reply(consumer_sock);
+ DBG3("Sending relayd socket file descriptor to consumer");
+ ret = consumer_send_fds(consumer_sock, ALIGNED_CONST_PTR(rsock->sock.fd), 1);
if (ret < 0) {
goto error;
}
- DBG3("Sending relayd socket file descriptor to consumer");
- ret = consumer_send_fds(consumer_sock, &sock->fd, 1);
+ DBG2("Consumer relayd socket sent");
+
+error:
+ return ret;
+}
+
+static
+int consumer_send_pipe(struct consumer_socket *consumer_sock,
+ enum lttng_consumer_command cmd, int pipe)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+ const char *pipe_name;
+ const char *command_name;
+
+ switch (cmd) {
+ case LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE:
+ pipe_name = "channel monitor";
+ command_name = "SET_CHANNEL_MONITOR_PIPE";
+ break;
+ default:
+ ERR("Unexpected command received in %s (cmd = %d)", __func__,
+ (int) cmd);
+ abort();
+ }
+
+ /* Code flow error. Safety net. */
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = cmd;
+
+ pthread_mutex_lock(consumer_sock->lock);
+ DBG3("Sending %s command to consumer", command_name);
+ ret = consumer_send_msg(consumer_sock, &msg);
if (ret < 0) {
goto error;
}
- DBG2("Consumer relayd socket sent");
+ DBG3("Sending %s pipe %d to consumer on socket %d",
+ pipe_name,
+ pipe, *consumer_sock->fd_ptr);
+ ret = consumer_send_fds(consumer_sock, &pipe, 1);
+ if (ret < 0) {
+ goto error;
+ }
+ DBG2("%s pipe successfully sent", pipe_name);
error:
+ pthread_mutex_unlock(consumer_sock->lock);
return ret;
}
+int consumer_send_channel_monitor_pipe(struct consumer_socket *consumer_sock,
+ int pipe)
+{
+ return consumer_send_pipe(consumer_sock,
+ LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE, pipe);
+}
+
/*
- * Set consumer subdirectory using the session name and a generated datetime if
- * needed. This is appended to the current subdirectory.
+ * Ask the consumer if the data is pending for the specific session id.
+ * Returns 1 if data is pending, 0 otherwise, or < 0 on error.
*/
-int consumer_set_subdir(struct consumer_output *consumer,
- const char *session_name)
+int consumer_is_data_pending(uint64_t session_id,
+ struct consumer_output *consumer)
{
- int ret = 0;
- unsigned int have_default_name = 0;
- char datetime[16], tmp_path[PATH_MAX];
- time_t rawtime;
- struct tm *timeinfo;
+ int ret;
+ int32_t ret_code = 0; /* Default is that the data is NOT pending */
+ struct consumer_socket *socket;
+ struct lttng_ht_iter iter;
+ struct lttcomm_consumer_msg msg;
assert(consumer);
- assert(session_name);
- memset(tmp_path, 0, sizeof(tmp_path));
+ DBG3("Consumer data pending for id %" PRIu64, session_id);
- /* Flag if we have a default session. */
- if (strncmp(session_name, DEFAULT_SESSION_NAME "-",
- strlen(DEFAULT_SESSION_NAME) + 1) == 0) {
- have_default_name = 1;
- } else {
- /* Get date and time for session path */
- time(&rawtime);
- timeinfo = localtime(&rawtime);
- strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo);
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING;
+ msg.u.data_pending.session_id = session_id;
+
+ /* Send command for each consumer */
+ rcu_read_lock();
+ cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket,
+ node.node) {
+ pthread_mutex_lock(socket->lock);
+ ret = consumer_socket_send(socket, &msg, sizeof(msg));
+ if (ret < 0) {
+ pthread_mutex_unlock(socket->lock);
+ goto error_unlock;
+ }
+
+ /*
+ * No need for a recv reply status because the answer to the command is
+ * the reply status message.
+ */
+
+ ret = consumer_socket_recv(socket, &ret_code, sizeof(ret_code));
+ if (ret < 0) {
+ pthread_mutex_unlock(socket->lock);
+ goto error_unlock;
+ }
+ pthread_mutex_unlock(socket->lock);
+
+ if (ret_code == 1) {
+ break;
+ }
+ }
+ rcu_read_unlock();
+
+ DBG("Consumer data is %s pending for session id %" PRIu64,
+ ret_code == 1 ? "" : "NOT", session_id);
+ return ret_code;
+
+error_unlock:
+ rcu_read_unlock();
+ return -1;
+}
+
+/*
+ * Send a flush command to consumer using the given channel key.
+ *
+ * Return 0 on success else a negative value.
+ */
+int consumer_flush_channel(struct consumer_socket *socket, uint64_t key)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+
+ DBG2("Consumer flush channel key %" PRIu64, key);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL;
+ msg.u.flush_channel.key = key;
+
+ pthread_mutex_lock(socket->lock);
+ health_code_update();
+
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto end;
+ }
+
+end:
+ health_code_update();
+ pthread_mutex_unlock(socket->lock);
+ return ret;
+}
+
+/*
+ * Send a clear quiescent command to consumer using the given channel key.
+ *
+ * Return 0 on success else a negative value.
+ */
+int consumer_clear_quiescent_channel(struct consumer_socket *socket, uint64_t key)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+
+ DBG2("Consumer clear quiescent channel key %" PRIu64, key);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_CLEAR_QUIESCENT_CHANNEL;
+ msg.u.clear_quiescent_channel.key = key;
+
+ pthread_mutex_lock(socket->lock);
+ health_code_update();
+
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto end;
+ }
+
+end:
+ health_code_update();
+ pthread_mutex_unlock(socket->lock);
+ return ret;
+}
+
+/*
+ * Send a close metadata command to consumer using the given channel key.
+ * Called with registry lock held.
+ *
+ * Return 0 on success else a negative value.
+ */
+int consumer_close_metadata(struct consumer_socket *socket,
+ uint64_t metadata_key)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+
+ DBG2("Consumer close metadata channel key %" PRIu64, metadata_key);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA;
+ msg.u.close_metadata.key = metadata_key;
+
+ pthread_mutex_lock(socket->lock);
+ health_code_update();
+
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto end;
+ }
+
+end:
+ health_code_update();
+ pthread_mutex_unlock(socket->lock);
+ return ret;
+}
+
+/*
+ * Send a setup metdata command to consumer using the given channel key.
+ *
+ * Return 0 on success else a negative value.
+ */
+int consumer_setup_metadata(struct consumer_socket *socket,
+ uint64_t metadata_key)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+
+ DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA;
+ msg.u.setup_metadata.key = metadata_key;
+
+ pthread_mutex_lock(socket->lock);
+ health_code_update();
+
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto end;
+ }
+
+end:
+ health_code_update();
+ pthread_mutex_unlock(socket->lock);
+ return ret;
+}
+
+/*
+ * Send metadata string to consumer.
+ * RCU read-side lock must be held to guarantee existence of socket.
+ *
+ * Return 0 on success else a negative value.
+ */
+int consumer_push_metadata(struct consumer_socket *socket,
+ uint64_t metadata_key, char *metadata_str, size_t len,
+ size_t target_offset, uint64_t version)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+
+ DBG2("Consumer push metadata to consumer socket %d", *socket->fd_ptr);
+
+ pthread_mutex_lock(socket->lock);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA;
+ msg.u.push_metadata.key = metadata_key;
+ msg.u.push_metadata.target_offset = target_offset;
+ msg.u.push_metadata.len = len;
+ msg.u.push_metadata.version = version;
+
+ health_code_update();
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0 || len == 0) {
+ goto end;
+ }
+
+ DBG3("Consumer pushing metadata on sock %d of len %zu", *socket->fd_ptr,
+ len);
+
+ ret = consumer_socket_send(socket, metadata_str, len);
+ if (ret < 0) {
+ goto end;
+ }
+
+ health_code_update();
+ ret = consumer_recv_status_reply(socket);
+ if (ret < 0) {
+ goto end;
}
- if (have_default_name) {
- ret = snprintf(tmp_path, sizeof(tmp_path),
- "%s/%s", consumer->subdir, session_name);
+end:
+ pthread_mutex_unlock(socket->lock);
+ health_code_update();
+ return ret;
+}
+
+/*
+ * Ask the consumer to snapshot a specific channel using the key.
+ *
+ * Returns LTTNG_OK on success or else an LTTng error code.
+ */
+enum lttng_error_code consumer_snapshot_channel(struct consumer_socket *socket,
+ uint64_t key, const struct consumer_output *output, int metadata,
+ uid_t uid, gid_t gid, const char *channel_path, int wait,
+ uint64_t nb_packets_per_stream)
+{
+ int ret;
+ enum lttng_error_code status = LTTNG_OK;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+ assert(output);
+
+ DBG("Consumer snapshot channel key %" PRIu64, key);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL;
+ msg.u.snapshot_channel.key = key;
+ msg.u.snapshot_channel.nb_packets_per_stream = nb_packets_per_stream;
+ msg.u.snapshot_channel.metadata = metadata;
+
+ if (output->type == CONSUMER_DST_NET) {
+ msg.u.snapshot_channel.relayd_id =
+ output->net_seq_index;
+ msg.u.snapshot_channel.use_relayd = 1;
} else {
- ret = snprintf(tmp_path, sizeof(tmp_path),
- "%s/%s-%s/", consumer->subdir, session_name, datetime);
+ msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL;
}
+ ret = lttng_strncpy(msg.u.snapshot_channel.pathname,
+ channel_path,
+ sizeof(msg.u.snapshot_channel.pathname));
if (ret < 0) {
- PERROR("snprintf session name date");
+ ERR("Snapshot path exceeds the maximal allowed length of %zu bytes (%zu bytes required) with path \"%s\"",
+ sizeof(msg.u.snapshot_channel.pathname),
+ strlen(channel_path),
+ channel_path);
+ status = LTTNG_ERR_SNAPSHOT_FAIL;
goto error;
}
- strncpy(consumer->subdir, tmp_path, sizeof(consumer->subdir));
- DBG2("Consumer subdir set to %s", consumer->subdir);
+ health_code_update();
+ pthread_mutex_lock(socket->lock);
+ 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:
- return ret;
+ health_code_update();
+ return status;
}
/*
- * Ask the consumer if the data is ready to read (NOT pending) for the specific
- * session id.
- *
- * This function has a different behavior with the consumer i.e. that it waits
- * for a reply from the consumer if yes or no the data is pending.
+ * Ask the consumer the number of discarded events for a channel.
*/
-int consumer_is_data_pending(unsigned int id,
- struct consumer_output *consumer)
+int consumer_get_discarded_events(uint64_t session_id, uint64_t channel_key,
+ struct consumer_output *consumer, uint64_t *discarded)
{
int ret;
- int32_t ret_code = 0; /* Default is that the data is NOT pending */
struct consumer_socket *socket;
struct lttng_ht_iter iter;
struct lttcomm_consumer_msg msg;
assert(consumer);
- msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING;
+ DBG3("Consumer discarded events id %" PRIu64, session_id);
- msg.u.data_pending.session_id = (uint64_t) id;
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_DISCARDED_EVENTS;
+ msg.u.discarded_events.session_id = session_id;
+ msg.u.discarded_events.channel_key = channel_key;
- DBG3("Consumer data pending for id %u", id);
+ *discarded = 0;
/* Send command for each consumer */
+ rcu_read_lock();
cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket,
node.node) {
- /* Code flow error */
- assert(socket->fd >= 0);
+ uint64_t consumer_discarded = 0;
+ pthread_mutex_lock(socket->lock);
+ ret = consumer_socket_send(socket, &msg, sizeof(msg));
+ if (ret < 0) {
+ pthread_mutex_unlock(socket->lock);
+ goto end;
+ }
+
+ /*
+ * No need for a recv reply status because the answer to the
+ * command is the reply status message.
+ */
+ ret = consumer_socket_recv(socket, &consumer_discarded,
+ sizeof(consumer_discarded));
+ if (ret < 0) {
+ ERR("get discarded events");
+ pthread_mutex_unlock(socket->lock);
+ goto end;
+ }
+ pthread_mutex_unlock(socket->lock);
+ *discarded += consumer_discarded;
+ }
+ ret = 0;
+ DBG("Consumer discarded %" PRIu64 " events in session id %" PRIu64,
+ *discarded, session_id);
+
+end:
+ rcu_read_unlock();
+ return ret;
+}
+/*
+ * Ask the consumer the number of lost packets for a channel.
+ */
+int consumer_get_lost_packets(uint64_t session_id, uint64_t channel_key,
+ struct consumer_output *consumer, uint64_t *lost)
+{
+ int ret;
+ struct consumer_socket *socket;
+ struct lttng_ht_iter iter;
+ struct lttcomm_consumer_msg msg;
+
+ assert(consumer);
+
+ DBG3("Consumer lost packets id %" PRIu64, session_id);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_LOST_PACKETS;
+ msg.u.lost_packets.session_id = session_id;
+ msg.u.lost_packets.channel_key = channel_key;
+
+ *lost = 0;
+
+ /* Send command for each consumer */
+ rcu_read_lock();
+ cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket,
+ node.node) {
+ uint64_t consumer_lost = 0;
pthread_mutex_lock(socket->lock);
+ ret = consumer_socket_send(socket, &msg, sizeof(msg));
+ if (ret < 0) {
+ pthread_mutex_unlock(socket->lock);
+ goto end;
+ }
- ret = lttcomm_send_unix_sock(socket->fd, &msg, sizeof(msg));
+ /*
+ * No need for a recv reply status because the answer to the
+ * command is the reply status message.
+ */
+ ret = consumer_socket_recv(socket, &consumer_lost,
+ sizeof(consumer_lost));
if (ret < 0) {
- /* The above call will print a PERROR on error. */
- DBG("Error on consumer is data pending on sock %d", socket->fd);
+ ERR("get lost packets");
pthread_mutex_unlock(socket->lock);
+ goto end;
+ }
+ pthread_mutex_unlock(socket->lock);
+ *lost += consumer_lost;
+ }
+ ret = 0;
+ DBG("Consumer lost %" PRIu64 " packets in session id %" PRIu64,
+ *lost, session_id);
+
+end:
+ rcu_read_unlock();
+ return ret;
+}
+
+/*
+ * Ask the consumer to rotate a channel.
+ *
+ * The new_chunk_id is the session->rotate_count that has been incremented
+ * when the rotation started. On the relay, this allows to keep track in which
+ * chunk each stream is currently writing to (for the rotate_pending operation).
+ */
+int consumer_rotate_channel(struct consumer_socket *socket, uint64_t key,
+ uid_t uid, gid_t gid, struct consumer_output *output,
+ bool is_metadata_channel)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+
+ DBG("Consumer rotate channel key %" PRIu64, key);
+
+ pthread_mutex_lock(socket->lock);
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_ROTATE_CHANNEL;
+ msg.u.rotate_channel.key = key;
+ msg.u.rotate_channel.metadata = !!is_metadata_channel;
+
+ if (output->type == CONSUMER_DST_NET) {
+ msg.u.rotate_channel.relayd_id = output->net_seq_index;
+ } else {
+ msg.u.rotate_channel.relayd_id = (uint64_t) -1ULL;
+ }
+
+ 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();
+ return ret;
+}
+
+int consumer_clear_channel(struct consumer_socket *socket, uint64_t key)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+
+ DBG("Consumer clear channel %" PRIu64, key);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_CLEAR_CHANNEL;
+ msg.u.clear_channel.key = key;
+
+ health_code_update();
+
+ pthread_mutex_lock(socket->lock);
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto error_socket;
+ }
+
+error_socket:
+ pthread_mutex_unlock(socket->lock);
+
+ health_code_update();
+ return ret;
+}
+
+int consumer_init(struct consumer_socket *socket,
+ const lttng_uuid sessiond_uuid)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg = {
+ .cmd_type = LTTNG_CONSUMER_INIT,
+ };
+
+ assert(socket);
+
+ DBG("Sending consumer initialization command");
+ lttng_uuid_copy(msg.u.init.sessiond_uuid, sessiond_uuid);
+
+ health_code_update();
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto error;
+ }
+
+error:
+ health_code_update();
+ return ret;
+}
+
+/*
+ * Ask the consumer to create a new chunk for a given session.
+ *
+ * Called with the consumer socket lock held.
+ */
+int consumer_create_trace_chunk(struct consumer_socket *socket,
+ uint64_t relayd_id, uint64_t session_id,
+ struct lttng_trace_chunk *chunk,
+ const char *domain_subdir)
+{
+ int ret;
+ enum lttng_trace_chunk_status chunk_status;
+ struct lttng_credentials chunk_credentials;
+ const struct lttng_directory_handle *chunk_directory_handle = NULL;
+ struct lttng_directory_handle *domain_handle = NULL;
+ int domain_dirfd;
+ const char *chunk_name;
+ bool chunk_name_overridden;
+ uint64_t chunk_id;
+ time_t creation_timestamp;
+ char creation_timestamp_buffer[ISO8601_STR_LEN];
+ const char *creation_timestamp_str = "(none)";
+ const bool chunk_has_local_output = relayd_id == -1ULL;
+ struct lttcomm_consumer_msg msg = {
+ .cmd_type = LTTNG_CONSUMER_CREATE_TRACE_CHUNK,
+ .u.create_trace_chunk.session_id = session_id,
+ };
+
+ assert(socket);
+ assert(chunk);
+
+ if (relayd_id != -1ULL) {
+ LTTNG_OPTIONAL_SET(&msg.u.create_trace_chunk.relayd_id,
+ relayd_id);
+ }
+
+ chunk_status = lttng_trace_chunk_get_name(chunk, &chunk_name,
+ &chunk_name_overridden);
+ if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK &&
+ chunk_status != LTTNG_TRACE_CHUNK_STATUS_NONE) {
+ ERR("Failed to get name of trace chunk");
+ ret = -LTTNG_ERR_FATAL;
+ goto error;
+ }
+ if (chunk_name_overridden) {
+ ret = lttng_strncpy(msg.u.create_trace_chunk.override_name,
+ chunk_name,
+ sizeof(msg.u.create_trace_chunk.override_name));
+ if (ret) {
+ ERR("Trace chunk name \"%s\" exceeds the maximal length allowed by the consumer protocol",
+ chunk_name);
+ ret = -LTTNG_ERR_FATAL;
goto error;
}
+ }
+ chunk_status = lttng_trace_chunk_get_creation_timestamp(chunk,
+ &creation_timestamp);
+ if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ ret = -LTTNG_ERR_FATAL;
+ goto error;
+ }
+ msg.u.create_trace_chunk.creation_timestamp =
+ (uint64_t) creation_timestamp;
+ /* Only used for logging purposes. */
+ ret = time_to_iso8601_str(creation_timestamp,
+ creation_timestamp_buffer,
+ sizeof(creation_timestamp_buffer));
+ creation_timestamp_str = !ret ? creation_timestamp_buffer :
+ "(formatting error)";
+
+ chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id);
+ if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) {
/*
- * No need for a recv reply status because the answer to the command is
- * the reply status message.
+ * Anonymous trace chunks should never be transmitted
+ * to remote peers (consumerd and relayd). They are used
+ * internally for backward-compatibility purposes.
*/
+ ret = -LTTNG_ERR_FATAL;
+ goto error;
+ }
+ msg.u.create_trace_chunk.chunk_id = chunk_id;
- ret = lttcomm_recv_unix_sock(socket->fd, &ret_code, sizeof(ret_code));
- if (ret <= 0) {
- if (ret == 0) {
- /* Orderly shutdown. Don't return 0 which means success. */
- ret = -1;
- }
- /* The above call will print a PERROR on error. */
- DBG("Error on recv consumer is data pending on sock %d", socket->fd);
- pthread_mutex_unlock(socket->lock);
+ if (chunk_has_local_output) {
+ chunk_status = lttng_trace_chunk_borrow_chunk_directory_handle(
+ chunk, &chunk_directory_handle);
+ if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ ret = -LTTNG_ERR_FATAL;
+ goto error;
+ }
+ chunk_status = lttng_trace_chunk_get_credentials(
+ chunk, &chunk_credentials);
+ if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ /*
+ * Not associating credentials to a sessiond chunk is a
+ * fatal internal error.
+ */
+ ret = -LTTNG_ERR_FATAL;
+ goto error;
+ }
+ ret = lttng_directory_handle_create_subdirectory_as_user(
+ chunk_directory_handle,
+ domain_subdir,
+ S_IRWXU | S_IRWXG,
+ &chunk_credentials);
+ if (ret) {
+ PERROR("Failed to create chunk domain output directory \"%s\"",
+ domain_subdir);
+ ret = -LTTNG_ERR_FATAL;
+ goto error;
+ }
+ domain_handle = lttng_directory_handle_create_from_handle(
+ domain_subdir,
+ chunk_directory_handle);
+ if (!domain_handle) {
+ ret = -LTTNG_ERR_FATAL;
goto error;
}
- pthread_mutex_unlock(socket->lock);
+ /*
+ * This will only compile on platforms that support
+ * dirfd (POSIX.2008). This is fine as the session daemon
+ * is only built for such platforms.
+ *
+ * The ownership of the chunk directory handle's is maintained
+ * by the trace chunk.
+ */
+ domain_dirfd = lttng_directory_handle_get_dirfd(
+ domain_handle);
+ assert(domain_dirfd >= 0);
+
+ msg.u.create_trace_chunk.credentials.value.uid =
+ chunk_credentials.uid;
+ msg.u.create_trace_chunk.credentials.value.gid =
+ chunk_credentials.gid;
+ msg.u.create_trace_chunk.credentials.is_set = 1;
+ }
- if (ret_code == 1) {
- break;
+ DBG("Sending consumer create trace chunk command: relayd_id = %" PRId64
+ ", session_id = %" PRIu64 ", chunk_id = %" PRIu64
+ ", creation_timestamp = %s",
+ relayd_id, session_id, chunk_id,
+ creation_timestamp_str);
+ health_code_update();
+ ret = consumer_send_msg(socket, &msg);
+ health_code_update();
+ if (ret < 0) {
+ ERR("Trace chunk creation error on consumer");
+ ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER;
+ goto error;
+ }
+
+ if (chunk_has_local_output) {
+ DBG("Sending trace chunk domain directory fd to consumer");
+ health_code_update();
+ ret = consumer_send_fds(socket, &domain_dirfd, 1);
+ health_code_update();
+ if (ret < 0) {
+ ERR("Trace chunk creation error on consumer");
+ ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER;
+ goto error;
}
}
+error:
+ lttng_directory_handle_put(domain_handle);
+ return ret;
+}
- DBG("Consumer data is %s pending for session id %u",
- ret_code == 1 ? "" : "NOT", id);
- return ret_code;
+/*
+ * Ask the consumer to close a trace chunk for a given session.
+ *
+ * Called with the consumer socket lock held.
+ */
+int consumer_close_trace_chunk(struct consumer_socket *socket,
+ uint64_t relayd_id, uint64_t session_id,
+ struct lttng_trace_chunk *chunk,
+ char *closed_trace_chunk_path)
+{
+ int ret;
+ enum lttng_trace_chunk_status chunk_status;
+ struct lttcomm_consumer_msg msg = {
+ .cmd_type = LTTNG_CONSUMER_CLOSE_TRACE_CHUNK,
+ .u.close_trace_chunk.session_id = session_id,
+ };
+ struct lttcomm_consumer_close_trace_chunk_reply reply;
+ uint64_t chunk_id;
+ time_t close_timestamp;
+ enum lttng_trace_chunk_command_type close_command;
+ const char *close_command_name = "none";
+ struct lttng_dynamic_buffer path_reception_buffer;
+
+ assert(socket);
+ lttng_dynamic_buffer_init(&path_reception_buffer);
+
+ if (relayd_id != -1ULL) {
+ LTTNG_OPTIONAL_SET(
+ &msg.u.close_trace_chunk.relayd_id, relayd_id);
+ }
+ chunk_status = lttng_trace_chunk_get_close_command(
+ chunk, &close_command);
+ switch (chunk_status) {
+ case LTTNG_TRACE_CHUNK_STATUS_OK:
+ LTTNG_OPTIONAL_SET(&msg.u.close_trace_chunk.close_command,
+ (uint32_t) close_command);
+ break;
+ case LTTNG_TRACE_CHUNK_STATUS_NONE:
+ break;
+ default:
+ ERR("Failed to get trace chunk close command");
+ ret = -1;
+ goto error;
+ }
+
+ chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id);
+ /*
+ * Anonymous trace chunks should never be transmitted to remote peers
+ * (consumerd and relayd). They are used internally for
+ * backward-compatibility purposes.
+ */
+ assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK);
+ msg.u.close_trace_chunk.chunk_id = chunk_id;
+
+ chunk_status = lttng_trace_chunk_get_close_timestamp(chunk,
+ &close_timestamp);
+ /*
+ * A trace chunk should be closed locally before being closed remotely.
+ * Otherwise, the close timestamp would never be transmitted to the
+ * peers.
+ */
+ assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK);
+ msg.u.close_trace_chunk.close_timestamp = (uint64_t) close_timestamp;
+
+ if (msg.u.close_trace_chunk.close_command.is_set) {
+ close_command_name = lttng_trace_chunk_command_type_get_name(
+ close_command);
+ }
+ DBG("Sending consumer close trace chunk command: relayd_id = %" PRId64
+ ", session_id = %" PRIu64 ", chunk_id = %" PRIu64
+ ", close command = \"%s\"",
+ relayd_id, session_id, chunk_id, close_command_name);
+
+ health_code_update();
+ ret = consumer_socket_send(socket, &msg, sizeof(struct lttcomm_consumer_msg));
+ if (ret < 0) {
+ ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER;
+ goto error;
+ }
+ ret = consumer_socket_recv(socket, &reply, sizeof(reply));
+ if (ret < 0) {
+ ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER;
+ goto error;
+ }
+ if (reply.path_length >= LTTNG_PATH_MAX) {
+ ERR("Invalid path returned by relay daemon: %" PRIu32 "bytes exceeds maximal allowed length of %d bytes",
+ reply.path_length, LTTNG_PATH_MAX);
+ ret = -LTTNG_ERR_INVALID_PROTOCOL;
+ goto error;
+ }
+ ret = lttng_dynamic_buffer_set_size(&path_reception_buffer,
+ reply.path_length);
+ if (ret) {
+ ERR("Failed to allocate reception buffer of path returned by the \"close trace chunk\" command");
+ ret = -LTTNG_ERR_NOMEM;
+ goto error;
+ }
+ ret = consumer_socket_recv(socket, path_reception_buffer.data,
+ path_reception_buffer.size);
+ if (ret < 0) {
+ ERR("Communication error while receiving path of closed trace chunk");
+ ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER;
+ goto error;
+ }
+ if (path_reception_buffer.data[path_reception_buffer.size - 1] != '\0') {
+ ERR("Invalid path returned by relay daemon: not null-terminated");
+ ret = -LTTNG_ERR_INVALID_PROTOCOL;
+ goto error;
+ }
+ if (closed_trace_chunk_path) {
+ /*
+ * closed_trace_chunk_path is assumed to have a length >=
+ * LTTNG_PATH_MAX
+ */
+ memcpy(closed_trace_chunk_path, path_reception_buffer.data,
+ path_reception_buffer.size);
+ }
error:
- return -1;
+ lttng_dynamic_buffer_reset(&path_reception_buffer);
+ health_code_update();
+ return ret;
+}
+
+/*
+ * Ask the consumer if a trace chunk exists.
+ *
+ * Called with the consumer socket lock held.
+ * Returns 0 on success, or a negative value on error.
+ */
+int consumer_trace_chunk_exists(struct consumer_socket *socket,
+ uint64_t relayd_id, uint64_t session_id,
+ struct lttng_trace_chunk *chunk,
+ enum consumer_trace_chunk_exists_status *result)
+{
+ int ret;
+ enum lttng_trace_chunk_status chunk_status;
+ struct lttcomm_consumer_msg msg = {
+ .cmd_type = LTTNG_CONSUMER_TRACE_CHUNK_EXISTS,
+ .u.trace_chunk_exists.session_id = session_id,
+ };
+ uint64_t chunk_id;
+ const char *consumer_reply_str;
+
+ assert(socket);
+
+ if (relayd_id != -1ULL) {
+ LTTNG_OPTIONAL_SET(&msg.u.trace_chunk_exists.relayd_id,
+ relayd_id);
+ }
+
+ chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id);
+ if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ /*
+ * Anonymous trace chunks should never be transmitted
+ * to remote peers (consumerd and relayd). They are used
+ * internally for backward-compatibility purposes.
+ */
+ ret = -LTTNG_ERR_FATAL;
+ goto error;
+ }
+ msg.u.trace_chunk_exists.chunk_id = chunk_id;
+
+ DBG("Sending consumer trace chunk exists command: relayd_id = %" PRId64
+ ", session_id = %" PRIu64
+ ", chunk_id = %" PRIu64, relayd_id, session_id, chunk_id);
+
+ health_code_update();
+ ret = consumer_send_msg(socket, &msg);
+ switch (-ret) {
+ case LTTCOMM_CONSUMERD_UNKNOWN_TRACE_CHUNK:
+ consumer_reply_str = "unknown trace chunk";
+ *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_UNKNOWN_CHUNK;
+ break;
+ case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_LOCAL:
+ consumer_reply_str = "trace chunk exists locally";
+ *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_LOCAL;
+ break;
+ case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_REMOTE:
+ consumer_reply_str = "trace chunk exists on remote peer";
+ *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_REMOTE;
+ break;
+ default:
+ ERR("Consumer returned an error from TRACE_CHUNK_EXISTS command");
+ ret = -1;
+ goto error;
+ }
+ DBG("Consumer reply to TRACE_CHUNK_EXISTS command: %s",
+ consumer_reply_str);
+ ret = 0;
+error:
+ health_code_update();
+ return ret;
}
projects / lttng-tools.git / blobdiff