+++ /dev/null
-/*
- * SPDX-License-Identifier: MIT
- *
- * Copyright 2019 Francis Deslauriers <francis.deslauriers@efficios.com>
- * Copyright 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- */
-
-#define BT_COMP_LOG_SELF_COMP (viewer_connection->self_comp)
-#define BT_LOG_OUTPUT_LEVEL (viewer_connection->log_level)
-#define BT_LOG_TAG "PLUGIN/SRC.CTF.LTTNG-LIVE/VIEWER"
-#include "logging/comp-logging.h"
-
-#include <fcntl.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <glib.h>
-
-#include "compat/socket.h"
-#include "compat/endian.h"
-#include "compat/compiler.h"
-#include "common/common.h"
-#include <babeltrace2/babeltrace.h>
-
-#include "lttng-live.h"
-#include "viewer-connection.h"
-#include "lttng-viewer-abi.h"
-#include "data-stream.h"
-#include "metadata.h"
-
-#define viewer_handle_send_recv_status(_self_comp, _self_comp_class, \
- _status, _action, _msg_str) \
-do { \
- switch (_status) { \
- case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: \
- break; \
- case LTTNG_LIVE_VIEWER_STATUS_ERROR: \
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(_self_comp, \
- _self_comp_class, "Error " _action " " _msg_str); \
- break; \
- default: \
- bt_common_abort(); \
- } \
-} while (0)
-
-#define viewer_handle_send_status(_self_comp, _self_comp_class, _status, _msg_str) \
- viewer_handle_send_recv_status(_self_comp, _self_comp_class, _status, \
- "sending", _msg_str)
-
-#define viewer_handle_recv_status(_self_comp, _self_comp_class, _status, _msg_str) \
- viewer_handle_send_recv_status(_self_comp, _self_comp_class, _status, \
- "receiving", _msg_str)
-
-#define LTTNG_LIVE_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE_ERRNO(_self_comp, \
- _self_comp_class, _msg, _fmt, ...) \
- do { \
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(_self_comp, _self_comp_class, \
- _msg ": %s" _fmt, bt_socket_errormsg(), ##__VA_ARGS__); \
- } while (0)
-
-static
-const char *lttng_viewer_command_string(enum lttng_viewer_command cmd)
-{
- switch (cmd){
- case LTTNG_VIEWER_CONNECT:
- return "CONNECT";
- case LTTNG_VIEWER_LIST_SESSIONS:
- return "LIST_SESSIONS";
- case LTTNG_VIEWER_ATTACH_SESSION:
- return "ATTACH_SESSION";
- case LTTNG_VIEWER_GET_NEXT_INDEX:
- return "GET_NEXT_INDEX";
- case LTTNG_VIEWER_GET_PACKET:
- return "GET_PACKET";
- case LTTNG_VIEWER_GET_METADATA:
- return "GET_METADATA";
- case LTTNG_VIEWER_GET_NEW_STREAMS:
- return "GET_NEW_STREAMS";
- case LTTNG_VIEWER_CREATE_SESSION:
- return "CREATE_SESSION";
- case LTTNG_VIEWER_DETACH_SESSION:
- return "DETACH_SESSION";
- }
-
- bt_common_abort();
-}
-
-static
-const char *lttng_viewer_next_index_return_code_string(
- enum lttng_viewer_next_index_return_code code)
-{
- switch (code) {
- case LTTNG_VIEWER_INDEX_OK:
- return "INDEX_OK";
- case LTTNG_VIEWER_INDEX_RETRY:
- return "INDEX_RETRY";
- case LTTNG_VIEWER_INDEX_HUP:
- return "INDEX_HUP";
- case LTTNG_VIEWER_INDEX_ERR:
- return "INDEX_ERR";
- case LTTNG_VIEWER_INDEX_INACTIVE:
- return "INDEX_INACTIVE";
- case LTTNG_VIEWER_INDEX_EOF:
- return "INDEX_EOF";
- }
-
- bt_common_abort();
-}
-
-static
-const char *lttng_viewer_get_packet_return_code_string(
- enum lttng_viewer_get_packet_return_code code)
-{
- switch (code) {
- case LTTNG_VIEWER_GET_PACKET_OK:
- return "GET_PACKET_OK";
- case LTTNG_VIEWER_GET_PACKET_RETRY:
- return "GET_PACKET_RETRY";
- case LTTNG_VIEWER_GET_PACKET_ERR:
- return "GET_PACKET_ERR";
- case LTTNG_VIEWER_GET_PACKET_EOF:
- return "GET_PACKET_EOF";
- }
-
- bt_common_abort();
-};
-
-static
-const char *lttng_viewer_seek_string(enum lttng_viewer_seek seek)
-{
- switch (seek) {
- case LTTNG_VIEWER_SEEK_BEGINNING:
- return "SEEK_BEGINNING";
- case LTTNG_VIEWER_SEEK_LAST:
- return "SEEK_LAST";
- }
-
- bt_common_abort();
-}
-
-static inline
-enum lttng_live_iterator_status viewer_status_to_live_iterator_status(
- enum lttng_live_viewer_status viewer_status)
-{
- switch (viewer_status) {
- case LTTNG_LIVE_VIEWER_STATUS_OK:
- return LTTNG_LIVE_ITERATOR_STATUS_OK;
- case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED:
- return LTTNG_LIVE_ITERATOR_STATUS_AGAIN;
- case LTTNG_LIVE_VIEWER_STATUS_ERROR:
- return LTTNG_LIVE_ITERATOR_STATUS_ERROR;
- }
-
- bt_common_abort();
-}
-
-static inline
-enum ctf_msg_iter_medium_status viewer_status_to_ctf_msg_iter_medium_status(
- enum lttng_live_viewer_status viewer_status)
-{
- switch (viewer_status) {
- case LTTNG_LIVE_VIEWER_STATUS_OK:
- return CTF_MSG_ITER_MEDIUM_STATUS_OK;
- case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED:
- return CTF_MSG_ITER_MEDIUM_STATUS_AGAIN;
- case LTTNG_LIVE_VIEWER_STATUS_ERROR:
- return CTF_MSG_ITER_MEDIUM_STATUS_ERROR;
- }
-
- bt_common_abort();
-}
-
-static inline
-void viewer_connection_close_socket(
- struct live_viewer_connection *viewer_connection)
-{
- bt_self_component_class *self_comp_class =
- viewer_connection->self_comp_class;
- bt_self_component *self_comp =
- viewer_connection->self_comp;
- int ret = bt_socket_close(viewer_connection->control_sock);
- if (ret == -1) {
- BT_COMP_OR_COMP_CLASS_LOGW_ERRNO(
- self_comp, self_comp_class,
- "Error closing viewer connection socket: ", ".");
- }
-
- viewer_connection->control_sock = BT_INVALID_SOCKET;
-}
-
-/*
- * This function receives a message from the Relay daemon.
- * If it received the entire message, it returns _OK,
- * If it's interrupted, it returns _INTERRUPTED,
- * otherwise, it returns _ERROR.
- */
-static
-enum lttng_live_viewer_status lttng_live_recv(
- struct live_viewer_connection *viewer_connection,
- void *buf, size_t len)
-{
- ssize_t received;
- bt_self_component_class *self_comp_class =
- viewer_connection->self_comp_class;
- bt_self_component *self_comp =
- viewer_connection->self_comp;
- size_t total_received = 0, to_receive = len;
- struct lttng_live_msg_iter *lttng_live_msg_iter =
- viewer_connection->lttng_live_msg_iter;
- enum lttng_live_viewer_status status;
- BT_SOCKET sock = viewer_connection->control_sock;
-
- /*
- * Receive a message from the Relay.
- */
- do {
- received = bt_socket_recv(sock, buf + total_received, to_receive, 0);
- if (received == BT_SOCKET_ERROR) {
- if (bt_socket_interrupted()) {
- if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) {
- /*
- * This interruption was due to a
- * SIGINT and the graph is being torn
- * down.
- */
- status = LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED;
- lttng_live_msg_iter->was_interrupted = true;
- goto end;
- } else {
- /*
- * A signal was received, but the graph
- * is not being torn down. Carry on.
- */
- continue;
- }
- } else {
- /*
- * For any other types of socket error, close
- * the socket and return an error.
- */
- LTTNG_LIVE_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE_ERRNO(
- self_comp, self_comp_class,
- "Error receiving from Relay", ".");
-
- viewer_connection_close_socket(viewer_connection);
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- }
- } else if (received == 0) {
- /*
- * The recv() call returned 0. This means the
- * connection was orderly shutdown from the other peer.
- * If that happens when we are trying to receive
- * a message from it, it means something when wrong.
- * Close the socket and return an error.
- */
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp,
- self_comp_class, "Remote side has closed connection");
- viewer_connection_close_socket(viewer_connection);
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- }
-
- BT_ASSERT(received <= to_receive);
- total_received += received;
- to_receive -= received;
-
- } while (to_receive > 0);
-
- BT_ASSERT(total_received == len);
- status = LTTNG_LIVE_VIEWER_STATUS_OK;
-
-end:
- return status;
-}
-
-/*
- * This function sends a message to the Relay daemon.
- * If it send the message, it returns _OK,
- * If it's interrupted, it returns _INTERRUPTED,
- * otherwise, it returns _ERROR.
- */
-static
-enum lttng_live_viewer_status lttng_live_send(
- struct live_viewer_connection *viewer_connection,
- const void *buf, size_t len)
-{
- enum lttng_live_viewer_status status;
- bt_self_component_class *self_comp_class =
- viewer_connection->self_comp_class;
- bt_self_component *self_comp =
- viewer_connection->self_comp;
- struct lttng_live_msg_iter *lttng_live_msg_iter =
- viewer_connection->lttng_live_msg_iter;
- BT_SOCKET sock = viewer_connection->control_sock;
- size_t to_send = len;
- ssize_t total_sent = 0;
-
- do {
- ssize_t sent = bt_socket_send_nosigpipe(sock, buf + total_sent,
- to_send);
- if (sent == BT_SOCKET_ERROR) {
- if (bt_socket_interrupted()) {
- if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) {
- /*
- * This interruption was a SIGINT and
- * the graph is being teared down.
- */
- status = LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED;
- lttng_live_msg_iter->was_interrupted = true;
- goto end;
- } else {
- /*
- * A signal was received, but the graph
- * is not being teared down. Carry on.
- */
- continue;
- }
- } else {
- /*
- * For any other types of socket error, close
- * the socket and return an error.
- */
- LTTNG_LIVE_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE_ERRNO(
- self_comp, self_comp_class,
- "Error sending to Relay", ".");
-
- viewer_connection_close_socket(viewer_connection);
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- }
- }
-
- BT_ASSERT(sent <= to_send);
- total_sent += sent;
- to_send -= sent;
-
- } while (to_send > 0);
-
- BT_ASSERT(total_sent == len);
- status = LTTNG_LIVE_VIEWER_STATUS_OK;
-
-end:
- return status;
-}
-
-static
-int parse_url(struct live_viewer_connection *viewer_connection)
-{
- char error_buf[256] = { 0 };
- bt_self_component *self_comp = viewer_connection->self_comp;
- bt_self_component_class *self_comp_class = viewer_connection->self_comp_class;
- struct bt_common_lttng_live_url_parts lttng_live_url_parts = { 0 };
- int ret = -1;
- const char *path = viewer_connection->url->str;
-
- if (!path) {
- goto end;
- }
-
- lttng_live_url_parts = bt_common_parse_lttng_live_url(path, error_buf,
- sizeof(error_buf));
- if (!lttng_live_url_parts.proto) {
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp,
- self_comp_class,"Invalid LTTng live URL format: %s",
- error_buf);
- goto end;
- }
- viewer_connection->proto = lttng_live_url_parts.proto;
- lttng_live_url_parts.proto = NULL;
-
- viewer_connection->relay_hostname = lttng_live_url_parts.hostname;
- lttng_live_url_parts.hostname = NULL;
-
- if (lttng_live_url_parts.port >= 0) {
- viewer_connection->port = lttng_live_url_parts.port;
- } else {
- viewer_connection->port = LTTNG_DEFAULT_NETWORK_VIEWER_PORT;
- }
-
- viewer_connection->target_hostname = lttng_live_url_parts.target_hostname;
- lttng_live_url_parts.target_hostname = NULL;
-
- if (lttng_live_url_parts.session_name) {
- viewer_connection->session_name = lttng_live_url_parts.session_name;
- lttng_live_url_parts.session_name = NULL;
- }
-
- ret = 0;
-
-end:
- bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts);
- return ret;
-}
-
-static
-enum lttng_live_viewer_status lttng_live_handshake(
- struct live_viewer_connection *viewer_connection)
-{
- struct lttng_viewer_cmd cmd;
- struct lttng_viewer_connect connect;
- enum lttng_live_viewer_status status;
- bt_self_component_class *self_comp_class = viewer_connection->self_comp_class;
- bt_self_component *self_comp = viewer_connection->self_comp;
- const size_t cmd_buf_len = sizeof(cmd) + sizeof(connect);
- char cmd_buf[cmd_buf_len];
-
- BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class,
- "Handshaking with the relay daemon: cmd=%s, major-version=%u, minor-version=%u",
- lttng_viewer_command_string(LTTNG_VIEWER_CONNECT), LTTNG_LIVE_MAJOR,
- LTTNG_LIVE_MINOR);
-
- cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT);
- cmd.data_size = htobe64((uint64_t) sizeof(connect));
- cmd.cmd_version = htobe32(0);
-
- connect.viewer_session_id = -1ULL; /* will be set on recv */
- connect.major = htobe32(LTTNG_LIVE_MAJOR);
- connect.minor = htobe32(LTTNG_LIVE_MINOR);
- connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND);
-
- /*
- * Merge the cmd and connection request to prevent a write-write
- * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
- * second write to be performed quickly in presence of Nagle's algorithm
- */
- memcpy(cmd_buf, &cmd, sizeof(cmd));
- memcpy(cmd_buf + sizeof(cmd), &connect, sizeof(connect));
-
- status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len);
- if (status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_send_status(self_comp, self_comp_class,
- status, "viewer connect command");
- goto end;
- }
-
- status = lttng_live_recv(viewer_connection, &connect, sizeof(connect));
- if (status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_recv_status(self_comp, self_comp_class,
- status, "viewer connect reply");
- goto end;
- }
-
- BT_COMP_OR_COMP_CLASS_LOGI(self_comp, self_comp_class,
- "Received viewer session ID : %" PRIu64,
- (uint64_t) be64toh(connect.viewer_session_id));
- BT_COMP_OR_COMP_CLASS_LOGI(self_comp, self_comp_class,
- "Relayd version : %u.%u", be32toh(connect.major),
- be32toh(connect.minor));
-
- if (LTTNG_LIVE_MAJOR != be32toh(connect.major)) {
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp,
- self_comp_class, "Incompatible lttng-relayd protocol");
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- }
- /* Use the smallest protocol version implemented. */
- if (LTTNG_LIVE_MINOR > be32toh(connect.minor)) {
- viewer_connection->minor = be32toh(connect.minor);
- } else {
- viewer_connection->minor = LTTNG_LIVE_MINOR;
- }
- viewer_connection->major = LTTNG_LIVE_MAJOR;
-
- status = LTTNG_LIVE_VIEWER_STATUS_OK;
-
- goto end;
-
-end:
- return status;
-}
-
-static
-enum lttng_live_viewer_status lttng_live_connect_viewer(
- struct live_viewer_connection *viewer_connection)
-{
- struct hostent *host;
- struct sockaddr_in server_addr;
- enum lttng_live_viewer_status status;
- bt_self_component_class *self_comp_class = viewer_connection->self_comp_class;
- bt_self_component *self_comp = viewer_connection->self_comp;
-
- if (parse_url(viewer_connection)) {
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp,
- self_comp_class, "Failed to parse URL");
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto error;
- }
-
- BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class,
- "Connecting to hostname : %s, port : %d, "
- "target hostname : %s, session name : %s, proto : %s",
- viewer_connection->relay_hostname->str,
- viewer_connection->port,
- !viewer_connection->target_hostname ?
- "<none>" : viewer_connection->target_hostname->str,
- !viewer_connection->session_name ?
- "<none>" : viewer_connection->session_name->str,
- viewer_connection->proto->str);
-
- host = gethostbyname(viewer_connection->relay_hostname->str);
- if (!host) {
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp,
- self_comp_class, "Cannot lookup hostname: hostname=\"%s\"",
- viewer_connection->relay_hostname->str);
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto error;
- }
-
- if ((viewer_connection->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == BT_INVALID_SOCKET) {
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp,
- self_comp_class, "Socket creation failed: %s", bt_socket_errormsg());
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto error;
- }
-
- server_addr.sin_family = AF_INET;
- server_addr.sin_port = htons(viewer_connection->port);
- server_addr.sin_addr = *((struct in_addr *) host->h_addr);
- memset(&(server_addr.sin_zero), 0, 8);
-
- if (connect(viewer_connection->control_sock, (struct sockaddr *) &server_addr,
- sizeof(struct sockaddr)) == BT_SOCKET_ERROR) {
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp,
- self_comp_class, "Connection failed: %s",
- bt_socket_errormsg());
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto error;
- }
-
- status = lttng_live_handshake(viewer_connection);
-
- /*
- * Only print error and append cause in case of error. not in case of
- * interruption.
- */
- if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) {
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp,
- self_comp_class, "Viewer handshake failed");
- goto error;
- } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) {
- goto end;
- }
-
- goto end;
-
-error:
- if (viewer_connection->control_sock != BT_INVALID_SOCKET) {
- if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) {
- BT_COMP_OR_COMP_CLASS_LOGW(self_comp, self_comp_class,
- "Error closing socket: %s.", bt_socket_errormsg());
- }
- }
- viewer_connection->control_sock = BT_INVALID_SOCKET;
-end:
- return status;
-}
-
-static
-void lttng_live_disconnect_viewer(
- struct live_viewer_connection *viewer_connection)
-{
- bt_self_component_class *self_comp_class = viewer_connection->self_comp_class;
- bt_self_component *self_comp = viewer_connection->self_comp;
-
- if (viewer_connection->control_sock == BT_INVALID_SOCKET) {
- return;
- }
- if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) {
- BT_COMP_OR_COMP_CLASS_LOGW(self_comp, self_comp_class,
- "Error closing socket: %s", bt_socket_errormsg());
- viewer_connection->control_sock = BT_INVALID_SOCKET;
- }
-}
-
-static
-int list_update_session(bt_value *results,
- const struct lttng_viewer_session *session,
- bool *_found, struct live_viewer_connection *viewer_connection)
-{
- bt_self_component_class *self_comp_class = viewer_connection->self_comp_class;
- bt_self_component *self_comp = viewer_connection->self_comp;
- int ret = 0;
- uint64_t i, len;
- bt_value *map = NULL;
- bt_value *hostname = NULL;
- bt_value *session_name = NULL;
- bt_value *btval = NULL;
- bool found = false;
-
- len = bt_value_array_get_length(results);
- for (i = 0; i < len; i++) {
- const char *hostname_str = NULL;
- const char *session_name_str = NULL;
-
- map = bt_value_array_borrow_element_by_index(results, i);
- hostname = bt_value_map_borrow_entry_value(map, "target-hostname");
- if (!hostname) {
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp,
- self_comp_class,
- "Error borrowing \"target-hostname\" entry.");
- ret = -1;
- goto end;
- }
- session_name = bt_value_map_borrow_entry_value(map, "session-name");
- if (!session_name) {
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp,
- self_comp_class,
- "Error borrowing \"session-name\" entry.");
- ret = -1;
- goto end;
- }
- hostname_str = bt_value_string_get(hostname);
- session_name_str = bt_value_string_get(session_name);
-
- if (strcmp(session->hostname, hostname_str) == 0
- && strcmp(session->session_name, session_name_str) == 0) {
- int64_t val;
- uint32_t streams = be32toh(session->streams);
- uint32_t clients = be32toh(session->clients);
-
- found = true;
-
- btval = bt_value_map_borrow_entry_value(map, "stream-count");
- if (!btval) {
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(
- self_comp, self_comp_class,
- "Error borrowing \"stream-count\" entry.");
- ret = -1;
- goto end;
- }
- val = bt_value_integer_unsigned_get(btval);
- /* sum */
- val += streams;
- bt_value_integer_unsigned_set(btval, val);
-
- btval = bt_value_map_borrow_entry_value(map, "client-count");
- if (!btval) {
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(
- self_comp, self_comp_class,
- "Error borrowing \"client-count\" entry.");
- ret = -1;
- goto end;
- }
- val = bt_value_integer_unsigned_get(btval);
- /* max */
- val = bt_max_t(int64_t, clients, val);
- bt_value_integer_unsigned_set(btval, val);
- }
-
- if (found) {
- break;
- }
- }
-end:
- *_found = found;
- return ret;
-}
-
-static
-int list_append_session(bt_value *results,
- GString *base_url,
- const struct lttng_viewer_session *session,
- struct live_viewer_connection *viewer_connection)
-{
- int ret = 0;
- bt_self_component_class *self_comp_class = viewer_connection->self_comp_class;
- bt_value_map_insert_entry_status insert_status;
- bt_value_array_append_element_status append_status;
- bt_value *map = NULL;
- GString *url = NULL;
- bool found = false;
-
- /*
- * If the session already exists, add the stream count to it,
- * and do max of client counts.
- */
- ret = list_update_session(results, session, &found, viewer_connection);
- if (ret || found) {
- goto end;
- }
-
- map = bt_value_map_create();
- if (!map) {
- BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class,
- "Error creating map value.");
- ret = -1;
- goto end;
- }
-
- if (base_url->len < 1) {
- BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class,
- "Error: base_url length smaller than 1.");
- ret = -1;
- goto end;
- }
- /*
- * key = "url",
- * value = <string>,
- */
- url = g_string_new(base_url->str);
- g_string_append(url, "/host/");
- g_string_append(url, session->hostname);
- g_string_append_c(url, '/');
- g_string_append(url, session->session_name);
-
- insert_status = bt_value_map_insert_string_entry(map, "url", url->str);
- if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) {
- BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class,
- "Error inserting \"url\" entry.");
- ret = -1;
- goto end;
- }
-
- /*
- * key = "target-hostname",
- * value = <string>,
- */
- insert_status = bt_value_map_insert_string_entry(map, "target-hostname",
- session->hostname);
- if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) {
- BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class,
- "Error inserting \"target-hostname\" entry.");
- ret = -1;
- goto end;
- }
-
- /*
- * key = "session-name",
- * value = <string>,
- */
- insert_status = bt_value_map_insert_string_entry(map, "session-name",
- session->session_name);
- if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) {
- BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class,
- "Error inserting \"session-name\" entry.");
- ret = -1;
- goto end;
- }
-
- /*
- * key = "timer-us",
- * value = <integer>,
- */
- {
- uint32_t live_timer = be32toh(session->live_timer);
-
- insert_status = bt_value_map_insert_unsigned_integer_entry(
- map, "timer-us", live_timer);
- if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) {
- BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class,
- "Error inserting \"timer-us\" entry.");
- ret = -1;
- goto end;
- }
- }
-
- /*
- * key = "stream-count",
- * value = <integer>,
- */
- {
- uint32_t streams = be32toh(session->streams);
-
- insert_status = bt_value_map_insert_unsigned_integer_entry(map,
- "stream-count", streams);
- if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) {
- BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class,
- "Error inserting \"stream-count\" entry.");
- ret = -1;
- goto end;
- }
- }
-
- /*
- * key = "client-count",
- * value = <integer>,
- */
- {
- uint32_t clients = be32toh(session->clients);
-
- insert_status = bt_value_map_insert_unsigned_integer_entry(map,
- "client-count", clients);
- if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) {
- BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class,
- "Error inserting \"client-count\" entry.");
- ret = -1;
- goto end;
- }
- }
-
- append_status = bt_value_array_append_element(results, map);
- if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) {
- BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class,
- "Error appending map to results.");
- ret = -1;
- }
-
-end:
- if (url) {
- g_string_free(url, true);
- }
- BT_VALUE_PUT_REF_AND_RESET(map);
- return ret;
-}
-
-/*
- * Data structure returned:
- *
- * {
- * <array> = {
- * [n] = {
- * <map> = {
- * {
- * key = "url",
- * value = <string>,
- * },
- * {
- * key = "target-hostname",
- * value = <string>,
- * },
- * {
- * key = "session-name",
- * value = <string>,
- * },
- * {
- * key = "timer-us",
- * value = <integer>,
- * },
- * {
- * key = "stream-count",
- * value = <integer>,
- * },
- * {
- * key = "client-count",
- * value = <integer>,
- * },
- * },
- * }
- * }
- */
-
-BT_HIDDEN
-bt_component_class_query_method_status live_viewer_connection_list_sessions(
- struct live_viewer_connection *viewer_connection,
- const bt_value **user_result)
-{
- bt_self_component_class *self_comp_class = viewer_connection->self_comp_class;
- bt_component_class_query_method_status status =
- BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK;
- bt_value *result = NULL;
- enum lttng_live_viewer_status viewer_status;
- struct lttng_viewer_cmd cmd;
- struct lttng_viewer_list_sessions list;
- uint32_t i, sessions_count;
-
- result = bt_value_array_create();
- if (!result) {
- BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class,
- "Error creating array");
- status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR;
- goto error;
- }
-
- BT_LOGD("Requesting list of sessions: cmd=%s",
- lttng_viewer_command_string(LTTNG_VIEWER_LIST_SESSIONS));
-
- cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS);
- cmd.data_size = htobe64((uint64_t) 0);
- cmd.cmd_version = htobe32(0);
-
- viewer_status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd));
- if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) {
- BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class,
- "Error sending list sessions command");
- status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR;
- goto error;
- } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) {
- status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN;
- goto error;
- }
-
- viewer_status = lttng_live_recv(viewer_connection, &list, sizeof(list));
- if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) {
- BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class,
- "Error receiving session list");
- status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR;
- goto error;
- } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) {
- status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN;
- goto error;
- }
-
- sessions_count = be32toh(list.sessions_count);
- for (i = 0; i < sessions_count; i++) {
- struct lttng_viewer_session lsession;
-
- viewer_status = lttng_live_recv(viewer_connection, &lsession,
- sizeof(lsession));
- if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) {
- BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class,
- "Error receiving session:");
- status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR;
- goto error;
- } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) {
- status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN;
- goto error;
- }
-
- lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0';
- lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0';
- if (list_append_session(result, viewer_connection->url,
- &lsession, viewer_connection)) {
- BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class,
- "Error appending session");
- status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR;
- goto error;
- }
- }
-
- *user_result = result;
- goto end;
-error:
- BT_VALUE_PUT_REF_AND_RESET(result);
-end:
- return status;
-}
-
-static
-enum lttng_live_viewer_status lttng_live_query_session_ids(
- struct lttng_live_msg_iter *lttng_live_msg_iter)
-{
- struct lttng_viewer_cmd cmd;
- struct lttng_viewer_list_sessions list;
- struct lttng_viewer_session lsession;
- uint32_t i, sessions_count;
- uint64_t session_id;
- enum lttng_live_viewer_status status;
- struct live_viewer_connection *viewer_connection =
- lttng_live_msg_iter->viewer_connection;
- bt_self_component *self_comp = viewer_connection->self_comp;
- bt_self_component_class *self_comp_class =
- viewer_connection->self_comp_class;
-
- BT_COMP_LOGD("Asking the relay daemon for the list of sessions: cmd=%s",
- lttng_viewer_command_string(LTTNG_VIEWER_LIST_SESSIONS));
-
- cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS);
- cmd.data_size = htobe64((uint64_t) 0);
- cmd.cmd_version = htobe32(0);
-
- status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd));
- if (status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_send_status(self_comp, self_comp_class,
- status, "list sessions command");
- goto end;
- }
-
- status = lttng_live_recv(viewer_connection, &list, sizeof(list));
- if (status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_recv_status(self_comp, self_comp_class,
- status, "session list reply");
- goto end;
- }
-
- sessions_count = be32toh(list.sessions_count);
- for (i = 0; i < sessions_count; i++) {
- status = lttng_live_recv(viewer_connection, &lsession,
- sizeof(lsession));
- if (status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_recv_status(self_comp, self_comp_class,
- status, "session reply");
- goto end;
- }
- lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0';
- lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0';
- session_id = be64toh(lsession.id);
-
- BT_COMP_LOGI("Adding session to internal list: "
- "session-id=%" PRIu64 ", hostname=\"%s\", session-name=\"%s\"",
- session_id, lsession.hostname, lsession.session_name);
-
- if ((strncmp(lsession.session_name,
- viewer_connection->session_name->str,
- LTTNG_VIEWER_NAME_MAX) == 0) && (strncmp(lsession.hostname,
- viewer_connection->target_hostname->str,
- LTTNG_VIEWER_HOST_NAME_MAX) == 0)) {
-
- if (lttng_live_add_session(lttng_live_msg_iter, session_id,
- lsession.hostname,
- lsession.session_name)) {
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Failed to add live session");
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- }
- }
- }
-
- status = LTTNG_LIVE_VIEWER_STATUS_OK;
-
-end:
- return status;
-}
-
-BT_HIDDEN
-enum lttng_live_viewer_status lttng_live_create_viewer_session(
- struct lttng_live_msg_iter *lttng_live_msg_iter)
-{
- struct lttng_viewer_cmd cmd;
- struct lttng_viewer_create_session_response resp;
- enum lttng_live_viewer_status status;
- struct live_viewer_connection *viewer_connection =
- lttng_live_msg_iter->viewer_connection;
- bt_self_component *self_comp = viewer_connection->self_comp;
- bt_self_component_class *self_comp_class =
- viewer_connection->self_comp_class;
-
- BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class,
- "Creating a viewer session: cmd=%s",
- lttng_viewer_command_string(LTTNG_VIEWER_CREATE_SESSION));
-
- cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION);
- cmd.data_size = htobe64((uint64_t) 0);
- cmd.cmd_version = htobe32(0);
-
- status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd));
- if (status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_send_status(self_comp, self_comp_class,
- status, "create session command");
- goto end;
- }
-
- status = lttng_live_recv(viewer_connection, &resp, sizeof(resp));
- if (status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_recv_status(self_comp, self_comp_class,
- status, "create session reply");
- goto end;
- }
-
- if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) {
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Error creating viewer session");
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- }
-
- status = lttng_live_query_session_ids(lttng_live_msg_iter);
- if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) {
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Failed to query live viewer session ids");
- goto end;
- } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) {
- goto end;
- }
-
-end:
- return status;
-}
-
-static
-enum lttng_live_viewer_status receive_streams(struct lttng_live_session *session,
- uint32_t stream_count,
- bt_self_message_iterator *self_msg_iter)
-{
- uint32_t i;
- struct lttng_live_msg_iter *lttng_live_msg_iter =
- session->lttng_live_msg_iter;
- enum lttng_live_viewer_status status;
- struct live_viewer_connection *viewer_connection =
- lttng_live_msg_iter->viewer_connection;
- bt_self_component *self_comp = viewer_connection->self_comp;
-
- BT_COMP_LOGI("Getting %" PRIu32 " new streams", stream_count);
- for (i = 0; i < stream_count; i++) {
- struct lttng_viewer_stream stream;
- struct lttng_live_stream_iterator *live_stream;
- uint64_t stream_id;
- uint64_t ctf_trace_id;
-
- status = lttng_live_recv(viewer_connection, &stream,
- sizeof(stream));
- if (status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_recv_status(self_comp, NULL,
- status, "stream reply");
- goto end;
- }
- stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0';
- stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0';
- stream_id = be64toh(stream.id);
- ctf_trace_id = be64toh(stream.ctf_trace_id);
-
- if (stream.metadata_flag) {
- BT_COMP_LOGI(" metadata stream %" PRIu64 " : %s/%s",
- stream_id, stream.path_name, stream.channel_name);
- if (lttng_live_metadata_create_stream(session,
- ctf_trace_id, stream_id,
- stream.path_name)) {
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Error creating metadata stream");
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- }
- session->lazy_stream_msg_init = true;
- } else {
- BT_COMP_LOGI(" stream %" PRIu64 " : %s/%s",
- stream_id, stream.path_name, stream.channel_name);
- live_stream = lttng_live_stream_iterator_create(session,
- ctf_trace_id, stream_id, self_msg_iter);
- if (!live_stream) {
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Error creating stream");
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- }
- }
- }
- status = LTTNG_LIVE_VIEWER_STATUS_OK;
-
-end:
- return status;
-}
-
-BT_HIDDEN
-enum lttng_live_viewer_status lttng_live_session_attach(
- struct lttng_live_session *session,
- bt_self_message_iterator *self_msg_iter)
-{
- struct lttng_viewer_cmd cmd;
- enum lttng_live_viewer_status status;
- struct lttng_viewer_attach_session_request rq;
- struct lttng_viewer_attach_session_response rp;
- struct lttng_live_msg_iter *lttng_live_msg_iter =
- session->lttng_live_msg_iter;
- struct live_viewer_connection *viewer_connection =
- lttng_live_msg_iter->viewer_connection;
- bt_self_component *self_comp = viewer_connection->self_comp;
- uint64_t session_id = session->id;
- uint32_t streams_count;
- const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq);
- char cmd_buf[cmd_buf_len];
-
- BT_COMP_LOGD("Attaching to session: cmd=%s, session-id=%" PRIu64
- ", seek=%s",
- lttng_viewer_command_string(LTTNG_VIEWER_ATTACH_SESSION),
- session_id,
- lttng_viewer_seek_string(LTTNG_VIEWER_SEEK_LAST));
-
- cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION);
- cmd.data_size = htobe64((uint64_t) sizeof(rq));
- cmd.cmd_version = htobe32(0);
-
- memset(&rq, 0, sizeof(rq));
- rq.session_id = htobe64(session_id);
- // TODO: add cmd line parameter to select seek beginning
- // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING);
- rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST);
-
- /*
- * Merge the cmd and connection request to prevent a write-write
- * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
- * second write to be performed quickly in presence of Nagle's algorithm.
- */
- memcpy(cmd_buf, &cmd, sizeof(cmd));
- memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq));
- status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len);
- if (status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_send_status(self_comp, NULL,
- status, "attach session command");
- goto end;
- }
-
- status = lttng_live_recv(viewer_connection, &rp, sizeof(rp));
- if (status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_recv_status(self_comp, NULL,
- status, "attach session reply");
- goto end;
- }
-
- streams_count = be32toh(rp.streams_count);
- switch(be32toh(rp.status)) {
- case LTTNG_VIEWER_ATTACH_OK:
- break;
- case LTTNG_VIEWER_ATTACH_UNK:
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Session id %" PRIu64 " is unknown", session_id);
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- case LTTNG_VIEWER_ATTACH_ALREADY:
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "There is already a viewer attached to this session");
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- case LTTNG_VIEWER_ATTACH_NOT_LIVE:
- BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Not a live session");
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- case LTTNG_VIEWER_ATTACH_SEEK_ERR:
- BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Wrong seek parameter");
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- default:
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Unknown attach return code %u", be32toh(rp.status));
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- }
-
- /* We receive the initial list of streams. */
- status = receive_streams(session, streams_count, self_msg_iter);
- switch (status) {
- case LTTNG_LIVE_VIEWER_STATUS_OK:
- break;
- case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED:
- goto end;
- case LTTNG_LIVE_VIEWER_STATUS_ERROR:
- BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Error receiving streams");
- goto end;
- default:
- bt_common_abort();
- }
-
- session->attached = true;
- session->new_streams_needed = false;
-
-end:
- return status;
-}
-
-BT_HIDDEN
-enum lttng_live_viewer_status lttng_live_session_detach(
- struct lttng_live_session *session)
-{
- struct lttng_viewer_cmd cmd;
- enum lttng_live_viewer_status status;
- struct lttng_viewer_detach_session_request rq;
- struct lttng_viewer_detach_session_response rp;
- struct lttng_live_msg_iter *lttng_live_msg_iter =
- session->lttng_live_msg_iter;
- bt_self_component *self_comp = session->self_comp;
- struct live_viewer_connection *viewer_connection =
- lttng_live_msg_iter->viewer_connection;
- uint64_t session_id = session->id;
- const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq);
- char cmd_buf[cmd_buf_len];
-
- /*
- * The session might already be detached and the viewer socket might
- * already been closed. This happens when calling this function when
- * tearing down the graph after an error.
- */
- if (!session->attached || viewer_connection->control_sock == BT_INVALID_SOCKET) {
- return 0;
- }
-
- BT_COMP_LOGD("Detaching from session: cmd=%s, session-id=%" PRIu64,
- lttng_viewer_command_string(LTTNG_VIEWER_DETACH_SESSION),
- session_id);
-
- cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION);
- cmd.data_size = htobe64((uint64_t) sizeof(rq));
- cmd.cmd_version = htobe32(0);
-
- memset(&rq, 0, sizeof(rq));
- rq.session_id = htobe64(session_id);
-
- /*
- * Merge the cmd and connection request to prevent a write-write
- * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
- * second write to be performed quickly in presence of Nagle's algorithm.
- */
- memcpy(cmd_buf, &cmd, sizeof(cmd));
- memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq));
- status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len);
- if (status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_send_status(self_comp, NULL,
- status, "detach session command");
- goto end;
- }
-
- status = lttng_live_recv(viewer_connection, &rp, sizeof(rp));
- if (status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_recv_status(self_comp, NULL,
- status, "detach session reply");
- goto end;
- }
-
- switch(be32toh(rp.status)) {
- case LTTNG_VIEWER_DETACH_SESSION_OK:
- break;
- case LTTNG_VIEWER_DETACH_SESSION_UNK:
- BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id);
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- case LTTNG_VIEWER_DETACH_SESSION_ERR:
- BT_COMP_LOGW("Error detaching session id %" PRIu64 "", session_id);
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- default:
- BT_COMP_LOGE("Unknown detach return code %u", be32toh(rp.status));
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto end;
- }
-
- session->attached = false;
-
- status = LTTNG_LIVE_VIEWER_STATUS_OK;
-
-end:
- return status;
-}
-
-BT_HIDDEN
-enum lttng_live_get_one_metadata_status lttng_live_get_one_metadata_packet(
- struct lttng_live_trace *trace, FILE *fp, size_t *reply_len)
-{
- uint64_t len = 0;
- enum lttng_live_get_one_metadata_status status;
- enum lttng_live_viewer_status viewer_status;
- struct lttng_viewer_cmd cmd;
- struct lttng_viewer_get_metadata rq;
- struct lttng_viewer_metadata_packet rp;
- gchar *data = NULL;
- ssize_t writelen;
- struct lttng_live_session *session = trace->session;
- struct lttng_live_msg_iter *lttng_live_msg_iter =
- session->lttng_live_msg_iter;
- struct lttng_live_metadata *metadata = trace->metadata;
- struct live_viewer_connection *viewer_connection =
- lttng_live_msg_iter->viewer_connection;
- bt_self_component *self_comp = viewer_connection->self_comp;
- const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq);
- char cmd_buf[cmd_buf_len];
-
- BT_COMP_LOGD("Requesting new metadata for trace:"
- "cmd=%s, trace-id=%" PRIu64 ", metadata-stream-id=%" PRIu64,
- lttng_viewer_command_string(LTTNG_VIEWER_GET_METADATA),
- trace->id, metadata->stream_id);
-
- rq.stream_id = htobe64(metadata->stream_id);
- cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA);
- cmd.data_size = htobe64((uint64_t) sizeof(rq));
- cmd.cmd_version = htobe32(0);
-
- /*
- * Merge the cmd and connection request to prevent a write-write
- * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
- * second write to be performed quickly in presence of Nagle's algorithm.
- */
- memcpy(cmd_buf, &cmd, sizeof(cmd));
- memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq));
- viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len);
- if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_send_status(self_comp, NULL,
- viewer_status, "get metadata command");
- status = (enum lttng_live_get_one_metadata_status) viewer_status;
- goto end;
- }
-
- viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp));
- if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_recv_status(self_comp, NULL,
- viewer_status, "get metadata reply");
- status = (enum lttng_live_get_one_metadata_status) viewer_status;
- goto end;
- }
-
- switch (be32toh(rp.status)) {
- case LTTNG_VIEWER_METADATA_OK:
- BT_COMP_LOGD("Received get_metadata response: ok");
- break;
- case LTTNG_VIEWER_NO_NEW_METADATA:
- BT_COMP_LOGD("Received get_metadata response: no new");
- status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_END;
- goto end;
- case LTTNG_VIEWER_METADATA_ERR:
- /*
- * The Relayd cannot find this stream id. Maybe its
- * gone already. This can happen in short lived UST app
- * in a per-pid session.
- */
- BT_COMP_LOGD("Received get_metadata response: error");
- status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_CLOSED;
- goto end;
- default:
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Received get_metadata response: unknown");
- status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR;
- goto end;
- }
-
- len = be64toh(rp.len);
- BT_COMP_LOGD("Writing %" PRIu64" bytes to metadata", len);
- if (len <= 0) {
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Erroneous response length");
- status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR;
- goto end;
- }
-
- data = g_new0(gchar, len);
- if (!data) {
- BT_COMP_LOGE_APPEND_CAUSE_ERRNO(self_comp,
- "Failed to allocate data buffer", ".");
- status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR;
- goto end;
- }
-
- viewer_status = lttng_live_recv(viewer_connection, data, len);
- if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_recv_status(self_comp, NULL,
- viewer_status, "get metadata packet");
- status = (enum lttng_live_get_one_metadata_status) viewer_status;
- goto end;
- }
-
- /*
- * Write the metadata to the file handle.
- */
- writelen = fwrite(data, sizeof(uint8_t), len, fp);
- if (writelen != len) {
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Writing in the metadata file stream");
- status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR;
- goto end;
- }
-
- *reply_len = len;
- status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_OK;
-
-end:
- g_free(data);
- return status;
-}
-
-/*
- * Assign the fields from a lttng_viewer_index to a packet_index.
- */
-static
-void lttng_index_to_packet_index(struct lttng_viewer_index *lindex,
- struct packet_index *pindex)
-{
- BT_ASSERT(lindex);
- BT_ASSERT(pindex);
-
- pindex->offset = be64toh(lindex->offset);
- pindex->packet_size = be64toh(lindex->packet_size);
- pindex->content_size = be64toh(lindex->content_size);
- pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin);
- pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end);
- pindex->events_discarded = be64toh(lindex->events_discarded);
-}
-
-static
-void lttng_live_need_new_streams(struct lttng_live_msg_iter *lttng_live_msg_iter)
-{
- uint64_t session_idx;
- struct live_viewer_connection *viewer_connection =
- lttng_live_msg_iter->viewer_connection;
-
- for (session_idx = 0; session_idx < lttng_live_msg_iter->sessions->len;
- session_idx++) {
- struct lttng_live_session *session =
- g_ptr_array_index(lttng_live_msg_iter->sessions, session_idx);
- BT_COMP_LOGD("Marking session as needing new streams: "
- "session-id=%" PRIu64, session->id);
- session->new_streams_needed = true;
- }
-}
-
-BT_HIDDEN
-enum lttng_live_iterator_status lttng_live_get_next_index(
- struct lttng_live_msg_iter *lttng_live_msg_iter,
- struct lttng_live_stream_iterator *stream,
- struct packet_index *index)
-{
- struct lttng_viewer_cmd cmd;
- struct lttng_viewer_get_next_index rq;
- enum lttng_live_viewer_status viewer_status;
- struct lttng_viewer_index rp;
- enum lttng_live_iterator_status status;
- struct live_viewer_connection *viewer_connection =
- lttng_live_msg_iter->viewer_connection;
- bt_self_component *self_comp = viewer_connection->self_comp;
- struct lttng_live_trace *trace = stream->trace;
- const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq);
- char cmd_buf[cmd_buf_len];
- uint32_t flags, rp_status;
-
- BT_COMP_LOGD("Requesting next index for stream: cmd=%s, "
- "viewer-stream-id=%" PRIu64,
- lttng_viewer_command_string(LTTNG_VIEWER_GET_NEXT_INDEX),
- stream->viewer_stream_id);
- cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX);
- cmd.data_size = htobe64((uint64_t) sizeof(rq));
- cmd.cmd_version = htobe32(0);
-
- memset(&rq, 0, sizeof(rq));
- rq.stream_id = htobe64(stream->viewer_stream_id);
-
- /*
- * Merge the cmd and connection request to prevent a write-write
- * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
- * second write to be performed quickly in presence of Nagle's algorithm.
- */
- memcpy(cmd_buf, &cmd, sizeof(cmd));
- memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq));
-
- viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len);
- if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_send_status(self_comp, NULL,
- viewer_status, "get next index command");
- goto error;
- }
-
- viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp));
- if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_recv_status(self_comp, NULL,
- viewer_status, "get next index reply");
- goto error;
- }
-
- flags = be32toh(rp.flags);
- rp_status = be32toh(rp.status);
-
- BT_COMP_LOGD("Received response from relay daemon: cmd=%s, response=%s",
- lttng_viewer_command_string(LTTNG_VIEWER_GET_NEXT_INDEX),
- lttng_viewer_next_index_return_code_string(rp_status));
- switch (rp_status) {
- case LTTNG_VIEWER_INDEX_INACTIVE:
- {
- uint64_t ctf_stream_class_id;
-
- memset(index, 0, sizeof(struct packet_index));
- index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end);
- stream->current_inactivity_ts = index->ts_cycles.timestamp_end;
- ctf_stream_class_id = be64toh(rp.stream_id);
- if (stream->ctf_stream_class_id.is_set) {
- BT_ASSERT(stream->ctf_stream_class_id.value==
- ctf_stream_class_id);
- } else {
- stream->ctf_stream_class_id.value = ctf_stream_class_id;
- stream->ctf_stream_class_id.is_set = true;
- }
- lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_QUIESCENT);
- status = LTTNG_LIVE_ITERATOR_STATUS_OK;
- break;
- }
- case LTTNG_VIEWER_INDEX_OK:
- {
- uint64_t ctf_stream_class_id;
-
- lttng_index_to_packet_index(&rp, index);
- ctf_stream_class_id = be64toh(rp.stream_id);
- if (stream->ctf_stream_class_id.is_set) {
- BT_ASSERT(stream->ctf_stream_class_id.value==
- ctf_stream_class_id);
- } else {
- stream->ctf_stream_class_id.value = ctf_stream_class_id;
- stream->ctf_stream_class_id.is_set = true;
- }
-
- lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_ACTIVE_DATA);
-
- if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) {
- BT_COMP_LOGD("Marking trace as needing new metadata: "
- "response=%s, response-flag=NEW_METADATA, trace-id=%" PRIu64,
- lttng_viewer_next_index_return_code_string(rp_status),
- trace->id);
- trace->metadata_stream_state = LTTNG_LIVE_METADATA_STREAM_STATE_NEEDED;
- }
- if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) {
- BT_COMP_LOGD("Marking all sessions as possibly needing new streams: "
- "response=%s, response-flag=NEW_STREAM",
- lttng_viewer_next_index_return_code_string(rp_status));
- lttng_live_need_new_streams(lttng_live_msg_iter);
- }
- status = LTTNG_LIVE_ITERATOR_STATUS_OK;
- break;
- }
- case LTTNG_VIEWER_INDEX_RETRY:
- memset(index, 0, sizeof(struct packet_index));
- lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_ACTIVE_NO_DATA);
- status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN;
- goto end;
- case LTTNG_VIEWER_INDEX_HUP:
- memset(index, 0, sizeof(struct packet_index));
- index->offset = EOF;
- lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_EOF);
- stream->has_stream_hung_up = true;
- status = LTTNG_LIVE_ITERATOR_STATUS_END;
- break;
- case LTTNG_VIEWER_INDEX_ERR:
- memset(index, 0, sizeof(struct packet_index));
- lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_ACTIVE_NO_DATA);
- status = LTTNG_LIVE_ITERATOR_STATUS_ERROR;
- goto end;
- default:
- BT_COMP_LOGD("Received get_next_index response: unknown value");
- memset(index, 0, sizeof(struct packet_index));
- lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_ACTIVE_NO_DATA);
- status = LTTNG_LIVE_ITERATOR_STATUS_ERROR;
- goto end;
- }
- goto end;
-
-error:
- status = viewer_status_to_live_iterator_status(viewer_status);
-end:
- return status;
-}
-
-BT_HIDDEN
-enum ctf_msg_iter_medium_status lttng_live_get_stream_bytes(
- struct lttng_live_msg_iter *lttng_live_msg_iter,
- struct lttng_live_stream_iterator *stream, uint8_t *buf,
- uint64_t offset, uint64_t req_len, uint64_t *recv_len)
-{
- enum ctf_msg_iter_medium_status status;
- enum lttng_live_viewer_status viewer_status;
- struct lttng_viewer_trace_packet rp;
- struct lttng_viewer_cmd cmd;
- struct lttng_viewer_get_packet rq;
- struct live_viewer_connection *viewer_connection =
- lttng_live_msg_iter->viewer_connection;
- bt_self_component *self_comp = viewer_connection->self_comp;
- struct lttng_live_trace *trace = stream->trace;
- const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq);
- char cmd_buf[cmd_buf_len];
- uint32_t flags, rp_status;
-
- BT_COMP_LOGD("Requesting data from stream: cmd=%s, "
- "offset=%" PRIu64 ", request-len=%" PRIu64,
- lttng_viewer_command_string(LTTNG_VIEWER_GET_PACKET),
- offset, req_len);
-
- cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET);
- cmd.data_size = htobe64((uint64_t) sizeof(rq));
- cmd.cmd_version = htobe32(0);
-
- memset(&rq, 0, sizeof(rq));
- rq.stream_id = htobe64(stream->viewer_stream_id);
- rq.offset = htobe64(offset);
- rq.len = htobe32(req_len);
-
- /*
- * Merge the cmd and connection request to prevent a write-write
- * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
- * second write to be performed quickly in presence of Nagle's algorithm.
- */
- memcpy(cmd_buf, &cmd, sizeof(cmd));
- memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq));
-
- viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len);
- if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_send_status(self_comp, NULL,
- viewer_status, "get data packet command");
- goto error_convert_status;
- }
-
- viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp));
- if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_recv_status(self_comp, NULL,
- viewer_status, "get data packet reply");
- goto error_convert_status;
- }
-
- flags = be32toh(rp.flags);
- rp_status = be32toh(rp.status);
-
- BT_COMP_LOGD("Received response from relay daemon: cmd=%s, response=%s",
- lttng_viewer_command_string(LTTNG_VIEWER_GET_PACKET),
- lttng_viewer_get_packet_return_code_string(rp_status));
- switch (rp_status) {
- case LTTNG_VIEWER_GET_PACKET_OK:
- req_len = be32toh(rp.len);
- BT_COMP_LOGD("Got packet from relay daemon: response=%s, packet-len=%" PRIu64 "",
- lttng_viewer_get_packet_return_code_string(rp_status),
- req_len);
- status = CTF_MSG_ITER_MEDIUM_STATUS_OK;
- break;
- case LTTNG_VIEWER_GET_PACKET_RETRY:
- /* Unimplemented by relay daemon */
- status = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN;
- goto end;
- case LTTNG_VIEWER_GET_PACKET_ERR:
- if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) {
- BT_COMP_LOGD("Marking trace as needing new metadata: "
- "response=%s, response-flag=NEW_METADATA, trace-id=%" PRIu64,
- lttng_viewer_next_index_return_code_string(rp_status),
- trace->id);
- trace->metadata_stream_state = LTTNG_LIVE_METADATA_STREAM_STATE_NEEDED;
- }
- if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) {
- BT_COMP_LOGD("Marking all sessions as possibly needing new streams: "
- "response=%s, response-flag=NEW_STREAM",
- lttng_viewer_next_index_return_code_string(rp_status));
- lttng_live_need_new_streams(lttng_live_msg_iter);
- }
- if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA
- | LTTNG_VIEWER_FLAG_NEW_STREAM)) {
- status = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN;
- BT_COMP_LOGD("Reply with any one flags set means we should retry: response=%s",
- lttng_viewer_get_packet_return_code_string(rp_status));
- goto end;
- }
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Received get_data_packet response: error");
- status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR;
- goto end;
- case LTTNG_VIEWER_GET_PACKET_EOF:
- status = CTF_MSG_ITER_MEDIUM_STATUS_EOF;
- goto end;
- default:
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Received get_data_packet response: unknown (%d)", rp_status);
- status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR;
- goto end;
- }
-
- if (req_len == 0) {
- status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR;
- goto end;
- }
-
- viewer_status = lttng_live_recv(viewer_connection, buf, req_len);
- if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_recv_status(self_comp, NULL,
- viewer_status, "get data packet");
- goto error_convert_status;
- }
- *recv_len = req_len;
-
- status = CTF_MSG_ITER_MEDIUM_STATUS_OK;
- goto end;
-
-error_convert_status:
- status = viewer_status_to_ctf_msg_iter_medium_status(viewer_status);
-end:
- return status;
-}
-
-/*
- * Request new streams for a session.
- */
-BT_HIDDEN
-enum lttng_live_iterator_status lttng_live_session_get_new_streams(
- struct lttng_live_session *session,
- bt_self_message_iterator *self_msg_iter)
-{
- enum lttng_live_iterator_status status =
- LTTNG_LIVE_ITERATOR_STATUS_OK;
- struct lttng_viewer_cmd cmd;
- struct lttng_viewer_new_streams_request rq;
- struct lttng_viewer_new_streams_response rp;
- struct lttng_live_msg_iter *lttng_live_msg_iter =
- session->lttng_live_msg_iter;
- enum lttng_live_viewer_status viewer_status;
- struct live_viewer_connection *viewer_connection =
- lttng_live_msg_iter->viewer_connection;
- bt_self_component *self_comp = viewer_connection->self_comp;
- uint32_t streams_count;
- const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq);
- char cmd_buf[cmd_buf_len];
-
- if (!session->new_streams_needed) {
- status = LTTNG_LIVE_ITERATOR_STATUS_OK;
- goto end;
- }
-
- BT_COMP_LOGD("Requesting new streams for session: cmd=%s, "
- "session-id=%" PRIu64,
- lttng_viewer_command_string(LTTNG_VIEWER_GET_NEW_STREAMS),
- session->id);
-
- cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS);
- cmd.data_size = htobe64((uint64_t) sizeof(rq));
- cmd.cmd_version = htobe32(0);
-
- memset(&rq, 0, sizeof(rq));
- rq.session_id = htobe64(session->id);
-
- /*
- * Merge the cmd and connection request to prevent a write-write
- * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
- * second write to be performed quickly in presence of Nagle's algorithm.
- */
- memcpy(cmd_buf, &cmd, sizeof(cmd));
- memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq));
-
- viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len);
- if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_send_status(self_comp, NULL,
- viewer_status, "get new streams command");
- status = viewer_status_to_live_iterator_status(viewer_status);
- goto end;
- }
-
- viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp));
- if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_recv_status(self_comp, NULL,
- viewer_status, "get new streams reply");
- status = viewer_status_to_live_iterator_status(viewer_status);
- goto end;
- }
-
- streams_count = be32toh(rp.streams_count);
-
- switch(be32toh(rp.status)) {
- case LTTNG_VIEWER_NEW_STREAMS_OK:
- session->new_streams_needed = false;
- break;
- case LTTNG_VIEWER_NEW_STREAMS_NO_NEW:
- session->new_streams_needed = false;
- goto end;
- case LTTNG_VIEWER_NEW_STREAMS_HUP:
- session->new_streams_needed = false;
- session->closed = true;
- status = LTTNG_LIVE_ITERATOR_STATUS_END;
- goto end;
- case LTTNG_VIEWER_NEW_STREAMS_ERR:
- BT_COMP_LOGD("Received get_new_streams response: error");
- status = LTTNG_LIVE_ITERATOR_STATUS_ERROR;
- goto end;
- default:
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Received get_new_streams response: Unknown:"
- "return code %u", be32toh(rp.status));
- status = LTTNG_LIVE_ITERATOR_STATUS_ERROR;
- goto end;
- }
-
- viewer_status = receive_streams(session, streams_count, self_msg_iter);
- if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) {
- viewer_handle_recv_status(self_comp, NULL,
- viewer_status, "new streams");
- status = viewer_status_to_live_iterator_status(viewer_status);
- goto end;
- }
-
- status = LTTNG_LIVE_ITERATOR_STATUS_OK;
-end:
- return status;
-}
-
-BT_HIDDEN
-enum lttng_live_viewer_status live_viewer_connection_create(
- bt_self_component *self_comp,
- bt_self_component_class *self_comp_class,
- bt_logging_level log_level,
- const char *url, bool in_query,
- struct lttng_live_msg_iter *lttng_live_msg_iter,
- struct live_viewer_connection **viewer)
-{
- struct live_viewer_connection *viewer_connection;
- enum lttng_live_viewer_status status;
-
- viewer_connection = g_new0(struct live_viewer_connection, 1);
-
- if (bt_socket_init(log_level) != 0) {
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp,
- self_comp_class, "Failed to init socket");
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto error;
- }
-
- viewer_connection->log_level = log_level;
-
- viewer_connection->self_comp = self_comp;
- viewer_connection->self_comp_class = self_comp_class;
-
- viewer_connection->control_sock = BT_INVALID_SOCKET;
- viewer_connection->port = -1;
- viewer_connection->in_query = in_query;
- viewer_connection->lttng_live_msg_iter = lttng_live_msg_iter;
- viewer_connection->url = g_string_new(url);
- if (!viewer_connection->url) {
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp,
- self_comp_class, "Failed to allocate URL buffer");
- status = LTTNG_LIVE_VIEWER_STATUS_ERROR;
- goto error;
- }
-
- BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class,
- "Establishing connection to url \"%s\"...", url);
- status = lttng_live_connect_viewer(viewer_connection);
- /*
- * Only print error and append cause in case of error. not in case of
- * interruption.
- */
- if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) {
- BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp,
- self_comp_class, "Failed to establish connection: "
- "url=\"%s\"", url);
- goto error;
- } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) {
- goto error;
- }
- BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class,
- "Connection to url \"%s\" is established", url);
-
- *viewer = viewer_connection;
- status = LTTNG_LIVE_VIEWER_STATUS_OK;
- goto end;
-
-error:
- if (viewer_connection) {
- live_viewer_connection_destroy(viewer_connection);
- }
-end:
- return status;
-}
-
-BT_HIDDEN
-void live_viewer_connection_destroy(
- struct live_viewer_connection *viewer_connection)
-{
- bt_self_component *self_comp = viewer_connection->self_comp;
- bt_self_component_class *self_comp_class = viewer_connection->self_comp_class;
-
- if (!viewer_connection) {
- goto end;
- }
-
- BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class,
- "Closing connection to relay:"
- "relay-url=\"%s\"", viewer_connection->url->str);
-
- lttng_live_disconnect_viewer(viewer_connection);
-
- if (viewer_connection->url) {
- g_string_free(viewer_connection->url, true);
- }
-
- if (viewer_connection->relay_hostname) {
- g_string_free(viewer_connection->relay_hostname, true);
- }
-
- if (viewer_connection->target_hostname) {
- g_string_free(viewer_connection->target_hostname, true);
- }
-
- if (viewer_connection->session_name) {
- g_string_free(viewer_connection->session_name, true);
- }
-
- if (viewer_connection->proto) {
- g_string_free(viewer_connection->proto, true);
- }
-
- g_free(viewer_connection);
-
- bt_socket_fini();
-
-end:
- return;
-}
projects / babeltrace.git / blobdiff