#include "consumer.h"
+/*
+ * Send destroy relayd command to consumer.
+ *
+ * On success return positive value. On error, negative value.
+ */
+int consumer_send_destroy_relayd(struct consumer_socket *sock,
+ struct consumer_output *consumer)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ 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;
+ }
+
+ 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));
+ pthread_mutex_unlock(sock->lock);
+ if (ret < 0) {
+ PERROR("send consumer destroy relayd command");
+ goto error;
+ }
+
+ DBG2("Consumer send destroy relayd command done");
+
+error:
+ return ret;
+}
+
+/*
+ * For each consumer socket in the consumer output object, send a destroy
+ * relayd command.
+ */
+void consumer_output_send_destroy_relayd(struct consumer_output *consumer)
+{
+ int ret;
+ struct lttng_ht_iter iter;
+ struct consumer_socket *socket;
+
+ assert(consumer);
+
+ /* Destroy any relayd connection */
+ if (consumer && consumer->type == CONSUMER_DST_NET) {
+ rcu_read_lock();
+ cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket,
+ node.node) {
+ /* Send destroy relayd command */
+ ret = consumer_send_destroy_relayd(socket, consumer);
+ if (ret < 0) {
+ ERR("Unable to send destroy relayd command to consumer");
+ /* Continue since we MUST delete everything at this point. */
+ }
+ }
+ rcu_read_unlock();
+ }
+}
+
+/*
+ * From a consumer_data structure, allocate and add a consumer socket to the
+ * consumer output.
+ *
+ * Return 0 on success, else negative value on error
+ */
+int consumer_create_socket(struct consumer_data *data,
+ struct consumer_output *output)
+{
+ int ret = 0;
+ struct consumer_socket *socket;
+
+ assert(data);
+
+ if (output == NULL || data->cmd_sock < 0) {
+ /*
+ * Not an error. Possible there is simply not spawned consumer or it's
+ * disabled for the tracing session asking the socket.
+ */
+ goto error;
+ }
+
+ rcu_read_lock();
+ socket = consumer_find_socket(data->cmd_sock, output);
+ rcu_read_unlock();
+ if (socket == NULL) {
+ socket = consumer_allocate_socket(data->cmd_sock);
+ if (socket == NULL) {
+ ret = -1;
+ goto error;
+ }
+
+ socket->registered = 0;
+ socket->lock = &data->lock;
+ rcu_read_lock();
+ consumer_add_socket(socket, output);
+ rcu_read_unlock();
+ }
+
+ DBG3("Consumer socket created (fd: %d) and added to output",
+ data->cmd_sock);
+
+error:
+ return ret;
+}
+
+/*
+ * 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)
+{
+ struct lttng_ht_iter iter;
+ struct lttng_ht_node_ulong *node;
+ struct consumer_socket *socket = NULL;
+
+ /* Negative keys are lookup failures */
+ if (key < 0 || consumer == NULL) {
+ return NULL;
+ }
+
+ lttng_ht_lookup(consumer->socks, (void *)((unsigned long) key),
+ &iter);
+ node = lttng_ht_iter_get_node_ulong(&iter);
+ if (node != NULL) {
+ socket = caa_container_of(node, struct consumer_socket, node);
+ }
+
+ return socket;
+}
+
+/*
+ * Allocate a new consumer_socket and return the pointer.
+ */
+struct consumer_socket *consumer_allocate_socket(int fd)
+{
+ struct consumer_socket *socket = NULL;
+
+ 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);
+
+error:
+ return socket;
+}
+
+/*
+ * Add consumer socket to consumer output object. Read side lock must be
+ * acquired before calling this function.
+ */
+void consumer_add_socket(struct consumer_socket *sock,
+ struct consumer_output *consumer)
+{
+ assert(sock);
+ assert(consumer);
+
+ lttng_ht_add_unique_ulong(consumer->socks, &sock->node);
+}
+
+/*
+ * Delte consumer socket to consumer output object. Read side lock must be
+ * acquired before calling this function.
+ */
+void consumer_del_socket(struct consumer_socket *sock,
+ struct consumer_output *consumer)
+{
+ int ret;
+ struct lttng_ht_iter iter;
+
+ assert(sock);
+ assert(consumer);
+
+ iter.iter.node = &sock->node.node;
+ ret = lttng_ht_del(consumer->socks, &iter);
+ assert(!ret);
+}
+
+/*
+ * RCU destroy call function.
+ */
+static void destroy_socket_rcu(struct rcu_head *head)
+{
+ struct lttng_ht_node_ulong *node =
+ caa_container_of(head, struct lttng_ht_node_ulong, head);
+ struct consumer_socket *socket =
+ caa_container_of(node, struct consumer_socket, node);
+
+ free(socket);
+}
+
+/*
+ * Destroy and free socket pointer in a call RCU. Read side lock must be
+ * acquired before calling this function.
+ */
+void consumer_destroy_socket(struct consumer_socket *sock)
+{
+ assert(sock);
+
+ /*
+ * We DO NOT close the file descriptor here since it is global to the
+ * session daemon and is closed only if the consumer dies or a custom
+ * consumer was registered,
+ */
+ if (sock->registered) {
+ DBG3("Consumer socket was registered. Closing fd %d", sock->fd);
+ lttcomm_close_unix_sock(sock->fd);
+ }
+
+ call_rcu(&sock->node.head, destroy_socket_rcu);
+}
+
/*
* Allocate and assign data to a consumer_output object.
*
output->enabled = 1;
output->type = type;
output->net_seq_index = -1;
- /*
- * Important to keep it to a negative value on creation since it was zeroed
- * during allocation and the file descriptor 0 is a valid one.
- */
- output->sock = -1;
+
+ output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
error:
return output;
return;
}
- if (obj->sock >= 0) {
- (void) close(obj->sock);
+ 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();
+
+ /* Finally destroy HT */
+ lttng_ht_destroy(obj->socks);
}
+
free(obj);
}
*/
struct consumer_output *consumer_copy_output(struct consumer_output *obj)
{
+ struct lttng_ht_iter iter;
+ struct consumer_socket *socket, *copy_sock;
struct consumer_output *output;
assert(obj);
memcpy(output, obj, sizeof(struct consumer_output));
+ /* Copy sockets */
+ output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
+
+ cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) {
+ /* Create new socket object. */
+ copy_sock = consumer_allocate_socket(socket->fd);
+ if (copy_sock == NULL) {
+ goto malloc_error;
+ }
+
+ copy_sock->lock = socket->lock;
+ consumer_add_socket(copy_sock, output);
+ }
+
error:
return output;
+
+malloc_error:
+ consumer_destroy_output(output);
+ return NULL;
}
/*
* Set network URI to the consumer output object.
*
- * Return 0 on success. Negative value on error.
+ * 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,
struct lttng_uri *uri)
/* Assign default port. */
uri->port = DEFAULT_NETWORK_CONTROL_PORT;
}
+ DBG3("Consumer control URI set with port %d", uri->port);
break;
case LTTNG_STREAM_DATA:
dst_uri = &obj->dst.net.data;
/* Assign default port. */
uri->port = DEFAULT_NETWORK_DATA_PORT;
}
+ DBG3("Consumer data URI set with port %d", uri->port);
break;
default:
ERR("Set network uri type unknown %d", uri->stype);
if (!ret) {
/* Same URI, don't touch it and return success. */
DBG3("URI network compare are the same");
- goto end;
+ goto equal;
}
/* URIs were not equal, replacing it. */
DBG3("Consumer set network uri subdir path %s", tmp_path);
}
-end:
return 0;
-
+equal:
+ return 1;
error:
return -1;
}
break;
case CONSUMER_DST_LOCAL:
/* Add stream file name to stream path */
- strncat(msg->u.stream.path_name, "/", sizeof(msg->u.stream.path_name));
+ 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));
+ 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;
error:
return ret;
}
+
+/*
+ * Send relayd socket to consumer associated with a session name.
+ *
+ * On success return positive value. On error, negative value.
+ */
+int consumer_send_relayd_socket(int consumer_sock,
+ struct lttcomm_sock *sock, struct consumer_output *consumer,
+ enum lttng_stream_type type)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ /* Code flow error. Safety net. */
+ assert(sock);
+ assert(consumer);
+
+ /* Bail out if consumer is disabled */
+ if (!consumer->enabled) {
+ ret = LTTNG_OK;
+ goto error;
+ }
+
+ msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET;
+ /*
+ * Assign network consumer output index using the temporary consumer since
+ * this call should only be made from within a set_consumer_uri() function
+ * call in the session daemon.
+ */
+ msg.u.relayd_sock.net_index = consumer->net_seq_index;
+ msg.u.relayd_sock.type = type;
+ memcpy(&msg.u.relayd_sock.sock, sock, sizeof(msg.u.relayd_sock.sock));
+
+ DBG3("Sending relayd sock info to consumer on %d", consumer_sock);
+ ret = lttcomm_send_unix_sock(consumer_sock, &msg, sizeof(msg));
+ if (ret < 0) {
+ PERROR("send consumer relayd socket info");
+ goto error;
+ }
+
+ DBG3("Sending relayd socket file descriptor to consumer");
+ ret = consumer_send_fds(consumer_sock, &sock->fd, 1);
+ if (ret < 0) {
+ goto error;
+ }
+
+ DBG2("Consumer relayd socket sent");
+
+error:
+ return ret;
+}
+
+/*
+ * Set consumer subdirectory using the session name and a generated datetime if
+ * needed. This is appended to the current subdirectory.
+ */
+int consumer_set_subdir(struct consumer_output *consumer,
+ const char *session_name)
+{
+ int ret = 0;
+ unsigned int have_default_name = 0;
+ char datetime[16], tmp_path[PATH_MAX];
+ time_t rawtime;
+ struct tm *timeinfo;
+
+ assert(consumer);
+ assert(session_name);
+
+ memset(tmp_path, 0, sizeof(tmp_path));
+
+ /* 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);
+ }
+
+ if (have_default_name) {
+ ret = snprintf(tmp_path, sizeof(tmp_path),
+ "%s/%s", consumer->subdir, session_name);
+ } else {
+ ret = snprintf(tmp_path, sizeof(tmp_path),
+ "%s/%s-%s/", consumer->subdir, session_name, datetime);
+ }
+ if (ret < 0) {
+ PERROR("snprintf session name date");
+ goto error;
+ }
+
+ strncpy(consumer->subdir, tmp_path, sizeof(consumer->subdir));
+ DBG2("Consumer subdir set to %s", consumer->subdir);
+
+error:
+ return ret;
+}
projects / lttng-tools.git / blobdiff