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/*
* SPDX-FileCopyrightText: 2013 Julien Desfossez <jdesfossez@efficios.com>
*
* SPDX-License-Identifier: GPL-2.0-only
*
*/
#include <common/common.hpp>
#include <common/compat/endian.hpp>
#include <common/compat/errno.hpp>
#include <common/compat/time.hpp>
#include <common/index/ctf-index.hpp>
#include <lttng/lttng.h>
#include <bin/lttng-relayd/lttng-viewer-abi.hpp>
#include <fcntl.h>
#include <inttypes.h>
#include <netdb.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <tap/tap.h>
#include <unistd.h>
#include <urcu/list.h>
#define SESSION1 "test1"
#define RELAYD_URL "net://localhost"
#define LIVE_TIMER 2000000
/* Number of TAP tests in this file */
#define NUM_TESTS 11
#define mmap_size 524288
#ifdef HAVE_LIBLTTNG_UST_CTL
#include <lttng/lttng-export.h>
#include <lttng/ust-sigbus.h>
LTTNG_EXPORT DEFINE_LTTNG_UST_SIGBUS_STATE();
#endif
namespace {
struct live_session *session;
int control_sock;
int first_packet_offset;
int first_packet_len;
int first_packet_stream_id = -1;
struct viewer_stream {
uint64_t id;
uint64_t ctf_trace_id;
void *mmap_base;
int fd;
int metadata_flag;
int first_read;
char path[PATH_MAX];
};
struct live_session {
struct viewer_stream *streams;
uint64_t live_timer_interval;
uint64_t stream_count;
};
} /* namespace */
static ssize_t lttng_live_recv(int fd, void *buf, size_t len)
{
ssize_t ret;
size_t copied = 0, to_copy = len;
do {
ret = recv(fd, (char *) buf + copied, to_copy, 0);
if (ret > 0) {
LTTNG_ASSERT(ret <= to_copy);
copied += ret;
to_copy -= ret;
}
} while ((ret > 0 && to_copy > 0) || (ret < 0 && errno == EINTR));
if (ret > 0)
ret = copied;
/* ret = 0 means orderly shutdown, ret < 0 is error. */
return ret;
}
static ssize_t lttng_live_send(int fd, const void *buf, size_t len)
{
ssize_t ret;
do {
ret = send(fd, buf, len, MSG_NOSIGNAL);
} while (ret < 0 && errno == EINTR);
return ret;
}
static int connect_viewer(const char *hostname)
{
struct hostent *host;
struct sockaddr_in server_addr;
int ret;
host = gethostbyname(hostname);
if (!host) {
ret = -1;
goto end;
}
if ((control_sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
PERROR("Socket");
ret = -1;
goto end;
}
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(5344);
server_addr.sin_addr = *((struct in_addr *) host->h_addr);
bzero(&(server_addr.sin_zero), 8);
if (connect(control_sock, (struct sockaddr *) &server_addr, sizeof(struct sockaddr)) ==
-1) {
PERROR("Connect");
ret = -1;
goto end;
}
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(5345);
server_addr.sin_addr = *((struct in_addr *) host->h_addr);
bzero(&(server_addr.sin_zero), 8);
ret = 0;
end:
return ret;
}
static int establish_connection()
{
struct lttng_viewer_cmd cmd;
struct lttng_viewer_connect connect;
ssize_t ret_len;
cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT);
cmd.data_size = htobe64(sizeof(connect));
cmd.cmd_version = htobe32(0);
memset(&connect, 0, sizeof(connect));
connect.major = htobe32(VERSION_MAJOR);
connect.minor = htobe32(VERSION_MINOR);
connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND);
ret_len = lttng_live_send(control_sock, &cmd, sizeof(cmd));
if (ret_len < 0) {
diag("Error sending cmd");
goto error;
}
ret_len = lttng_live_send(control_sock, &connect, sizeof(connect));
if (ret_len < 0) {
diag("Error sending version");
goto error;
}
ret_len = lttng_live_recv(control_sock, &connect, sizeof(connect));
if (ret_len == 0) {
diag("[error] Remote side has closed connection");
goto error;
}
if (ret_len < 0) {
diag("Error receiving version");
goto error;
}
return 0;
error:
return -1;
}
/*
* Returns the number of sessions, should be 1 during the unit test.
*/
static int list_sessions(uint64_t *session_id)
{
struct lttng_viewer_cmd cmd;
struct lttng_viewer_list_sessions list;
struct lttng_viewer_session lsession;
int i;
ssize_t ret_len;
int first_session = 0;
cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS);
cmd.data_size = htobe64(0);
cmd.cmd_version = htobe32(0);
ret_len = lttng_live_send(control_sock, &cmd, sizeof(cmd));
if (ret_len < 0) {
diag("Error sending cmd");
goto error;
}
ret_len = lttng_live_recv(control_sock, &list, sizeof(list));
if (ret_len == 0) {
diag("[error] Remote side has closed connection");
goto error;
}
if (ret_len < 0) {
diag("Error receiving session list");
goto error;
}
for (i = 0; i < be32toh(list.sessions_count); i++) {
ret_len = lttng_live_recv(control_sock, &lsession, sizeof(lsession));
if (ret_len < 0) {
diag("Error receiving session");
goto error;
}
if (lsession.streams > 0 && first_session <= 0) {
first_session = be64toh(lsession.id);
*session_id = first_session;
}
}
return be32toh(list.sessions_count);
error:
return -1;
}
static int create_viewer_session()
{
struct lttng_viewer_cmd cmd;
struct lttng_viewer_create_session_response resp;
ssize_t ret_len;
cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION);
cmd.data_size = htobe64(0);
cmd.cmd_version = htobe32(0);
ret_len = lttng_live_send(control_sock, &cmd, sizeof(cmd));
if (ret_len < 0) {
diag("[error] Error sending cmd");
goto error;
}
LTTNG_ASSERT(ret_len == sizeof(cmd));
ret_len = lttng_live_recv(control_sock, &resp, sizeof(resp));
if (ret_len == 0) {
diag("[error] Remote side has closed connection");
goto error;
}
if (ret_len < 0) {
diag("[error] Error receiving create session reply");
goto error;
}
LTTNG_ASSERT(ret_len == sizeof(resp));
if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) {
diag("[error] Error creating viewer session");
goto error;
}
return 0;
error:
return -1;
}
static int attach_session(uint64_t id)
{
struct lttng_viewer_cmd cmd;
struct lttng_viewer_attach_session_request rq;
struct lttng_viewer_attach_session_response rp;
struct lttng_viewer_stream stream;
int i;
ssize_t ret_len;
session = zmalloc<live_session>();
if (!session) {
goto error;
}
cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION);
cmd.data_size = htobe64(sizeof(rq));
cmd.cmd_version = htobe32(0);
memset(&rq, 0, sizeof(rq));
rq.session_id = htobe64(id);
rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING);
ret_len = lttng_live_send(control_sock, &cmd, sizeof(cmd));
if (ret_len < 0) {
diag("Error sending cmd LTTNG_VIEWER_ATTACH_SESSION");
goto error;
}
ret_len = lttng_live_send(control_sock, &rq, sizeof(rq));
if (ret_len < 0) {
diag("Error sending attach request");
goto error;
}
ret_len = lttng_live_recv(control_sock, &rp, sizeof(rp));
if (ret_len == 0) {
diag("[error] Remote side has closed connection");
goto error;
}
if (ret_len < 0) {
diag("Error receiving attach response");
goto error;
}
if (be32toh(rp.status) != LTTNG_VIEWER_ATTACH_OK) {
goto error;
}
session->stream_count = be32toh(rp.streams_count);
if (session->stream_count == 0) {
diag("Got session stream count == 0");
goto error;
}
session->streams = calloc<viewer_stream>(session->stream_count);
if (!session->streams) {
goto error;
}
for (i = 0; i < be32toh(rp.streams_count); i++) {
ret_len = lttng_live_recv(control_sock, &stream, sizeof(stream));
if (ret_len == 0) {
diag("[error] Remote side has closed connection");
goto error;
}
if (ret_len < 0) {
diag("Error receiving stream");
goto error;
}
session->streams[i].id = be64toh(stream.id);
session->streams[i].ctf_trace_id = be64toh(stream.ctf_trace_id);
session->streams[i].first_read = 1;
session->streams[i].mmap_base = mmap(nullptr,
mmap_size,
PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS,
-1,
0);
if (session->streams[i].mmap_base == MAP_FAILED) {
diag("mmap error");
goto error;
}
if (be32toh(stream.metadata_flag)) {
session->streams[i].metadata_flag = 1;
}
}
return session->stream_count;
error:
return -1;
}
static int get_metadata()
{
struct lttng_viewer_cmd cmd;
struct lttng_viewer_get_metadata rq;
struct lttng_viewer_metadata_packet rp;
ssize_t ret_len;
int ret;
uint64_t i;
char *data = nullptr;
uint64_t len = 0;
int metadata_stream_id = -1;
cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA);
cmd.data_size = htobe64(sizeof(rq));
cmd.cmd_version = htobe32(0);
for (i = 0; i < session->stream_count; i++) {
if (session->streams[i].metadata_flag) {
metadata_stream_id = i;
break;
}
}
if (metadata_stream_id < 0) {
diag("No metadata stream found");
goto error;
}
rq.stream_id = htobe64(session->streams[metadata_stream_id].id);
retry:
ret_len = lttng_live_send(control_sock, &cmd, sizeof(cmd));
if (ret_len < 0) {
diag("Error sending cmd");
goto error;
}
ret_len = lttng_live_send(control_sock, &rq, sizeof(rq));
if (ret_len < 0) {
diag("Error sending get_metadata request");
goto error;
}
ret_len = lttng_live_recv(control_sock, &rp, sizeof(rp));
if (ret_len == 0) {
diag("[error] Remote side has closed connection");
goto error;
}
if (ret_len < 0) {
diag("Error receiving metadata response");
goto error;
}
switch (be32toh(rp.status)) {
case LTTNG_VIEWER_METADATA_OK:
break;
case LTTNG_VIEWER_NO_NEW_METADATA:
diag("Got LTTNG_VIEWER_NO_NEW_METADATA:");
usleep(50);
goto retry;
case LTTNG_VIEWER_METADATA_ERR:
diag("Got LTTNG_VIEWER_METADATA_ERR:");
goto error;
default:
diag("Got unknown status during LTTNG_VIEWER_GET_METADATA");
goto error;
}
len = be64toh(rp.len);
if (len <= 0) {
goto error;
}
data = calloc<char>(len);
if (!data) {
PERROR("relay data zmalloc");
goto error;
}
ret_len = lttng_live_recv(control_sock, data, len);
if (ret_len == 0) {
diag("[error] Remote side has closed connection");
goto error_free_data;
}
if (ret_len < 0) {
diag("Error receiving trace packet");
goto error_free_data;
}
free(data);
ret = len;
return ret;
error_free_data:
free(data);
error:
return -1;
}
static int get_next_index()
{
struct lttng_viewer_cmd cmd;
struct lttng_viewer_get_next_index rq;
struct lttng_viewer_index rp;
ssize_t ret_len;
int id;
cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX);
cmd.data_size = htobe64(sizeof(rq));
cmd.cmd_version = htobe32(0);
for (id = 0; id < session->stream_count; id++) {
if (session->streams[id].metadata_flag) {
continue;
}
memset(&rq, 0, sizeof(rq));
rq.stream_id = htobe64(session->streams[id].id);
retry:
ret_len = lttng_live_send(control_sock, &cmd, sizeof(cmd));
if (ret_len < 0) {
diag("Error sending cmd");
goto error;
}
ret_len = lttng_live_send(control_sock, &rq, sizeof(rq));
if (ret_len < 0) {
diag("Error sending get_next_index request");
goto error;
}
ret_len = lttng_live_recv(control_sock, &rp, sizeof(rp));
if (ret_len == 0) {
diag("[error] Remote side has closed connection");
goto error;
}
if (ret_len < 0) {
diag("Error receiving index response");
goto error;
}
rp.flags = be32toh(rp.flags);
switch (be32toh(rp.status)) {
case LTTNG_VIEWER_INDEX_INACTIVE:
/* Skip this stream. */
diag("Got LTTNG_VIEWER_INDEX_INACTIVE");
continue;
case LTTNG_VIEWER_INDEX_OK:
break;
case LTTNG_VIEWER_INDEX_RETRY:
sleep(1);
goto retry;
case LTTNG_VIEWER_INDEX_HUP:
diag("Got LTTNG_VIEWER_INDEX_HUP");
session->streams[id].id = -1ULL;
session->streams[id].fd = -1;
goto error;
case LTTNG_VIEWER_INDEX_ERR:
diag("Got LTTNG_VIEWER_INDEX_ERR");
goto error;
default:
diag("Unknown reply status during LTTNG_VIEWER_GET_NEXT_INDEX (%d)",
be32toh(rp.status));
goto error;
}
if (first_packet_stream_id < 0) {
/*
* Initialize the first packet stream id. That is,
* the first active stream encountered.
*/
first_packet_offset = be64toh(rp.offset);
first_packet_len = be64toh(rp.packet_size) / CHAR_BIT;
first_packet_stream_id = id;
diag("Got first packet index with offset %d and len %d",
first_packet_offset,
first_packet_len);
}
}
return 0;
error:
return -1;
}
static int get_data_packet(int id, uint64_t offset, uint64_t len)
{
struct lttng_viewer_cmd cmd;
struct lttng_viewer_get_packet rq;
struct lttng_viewer_trace_packet rp;
ssize_t ret_len;
cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET);
cmd.data_size = htobe64(sizeof(rq));
cmd.cmd_version = htobe32(0);
memset(&rq, 0, sizeof(rq));
rq.stream_id = htobe64(session->streams[id].id);
/* Already in big endian. */
rq.offset = offset;
rq.len = htobe32(len);
ret_len = lttng_live_send(control_sock, &cmd, sizeof(cmd));
if (ret_len < 0) {
diag("Error sending cmd");
goto error;
}
ret_len = lttng_live_send(control_sock, &rq, sizeof(rq));
if (ret_len < 0) {
diag("Error sending get_data_packet request");
goto error;
}
ret_len = lttng_live_recv(control_sock, &rp, sizeof(rp));
if (ret_len == 0) {
diag("[error] Remote side has closed connection");
goto error;
}
if (ret_len < 0) {
diag("Error receiving data response");
goto error;
}
rp.flags = be32toh(rp.flags);
switch (be32toh(rp.status)) {
case LTTNG_VIEWER_GET_PACKET_OK:
len = be32toh(rp.len);
if (len == 0) {
diag("Got LTTNG_VIEWER_GET_PACKET_OK, but len == 0");
goto error;
}
break;
case LTTNG_VIEWER_GET_PACKET_RETRY:
diag("Got LTTNG_VIEWER_GET_PACKET_RETRY:");
goto error;
case LTTNG_VIEWER_GET_PACKET_ERR:
if (rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA) {
diag("Got LTTNG_VIEWER_GET_PACKET_ERR with NEW_METADATA flag");
goto end;
}
diag("Got LTTNG_VIEWER_GET_PACKET_ERR:");
goto error;
default:
diag("Got unknown status code during LTTNG_VIEWER_GET_PACKET");
goto error;
}
if (len > mmap_size) {
diag("mmap_size not big enough");
goto error;
}
ret_len = lttng_live_recv(control_sock, session->streams[id].mmap_base, len);
if (ret_len == 0) {
diag("[error] Remote side has closed connection");
goto error;
}
if (ret_len < 0) {
diag("Error receiving trace packet");
goto error;
}
end:
return 0;
error:
return -1;
}
static int detach_viewer_session(uint64_t id)
{
struct lttng_viewer_cmd cmd;
struct lttng_viewer_detach_session_response resp;
struct lttng_viewer_detach_session_request rq;
int ret;
ssize_t ret_len;
cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION);
cmd.data_size = htobe64(sizeof(rq));
cmd.cmd_version = htobe32(0);
memset(&rq, 0, sizeof(rq));
rq.session_id = htobe64(id);
ret_len = lttng_live_send(control_sock, &cmd, sizeof(cmd));
if (ret_len < 0) {
fprintf(stderr, "[error] Error sending cmd\n");
ret = ret_len;
goto error;
}
ret_len = lttng_live_send(control_sock, &rq, sizeof(rq));
if (ret_len < 0) {
fprintf(stderr, "Error sending attach request\n");
ret = ret_len;
goto error;
}
ret_len = lttng_live_recv(control_sock, &resp, sizeof(resp));
if (ret_len < 0) {
fprintf(stderr, "[error] Error receiving detach session reply\n");
ret = ret_len;
goto error;
}
if (be32toh(resp.status) != LTTNG_VIEWER_DETACH_SESSION_OK) {
fprintf(stderr, "[error] Error detaching viewer session\n");
ret = -1;
goto error;
}
ret = 0;
error:
return ret;
}
int main()
{
int ret;
uint64_t session_id;
plan_tests(NUM_TESTS);
diag("Live unit tests");
ret = connect_viewer("localhost");
ok(ret == 0, "Connect viewer to relayd");
ret = establish_connection();
ok(ret == 0,
"Established connection and version check with %d.%d",
VERSION_MAJOR,
VERSION_MINOR);
ret = list_sessions(&session_id);
ok(ret > 0, "List sessions : %d session(s)", ret);
if (ret < 0) {
goto end;
}
ret = create_viewer_session();
ok(ret == 0, "Create viewer session");
ret = attach_session(session_id);
ok(ret > 0, "Attach to session, %d stream(s) received", ret);
ret = get_metadata();
ok(ret > 0, "Get metadata, received %d bytes", ret);
ret = get_next_index();
ok(ret == 0, "Get one index per stream");
ret = get_data_packet(first_packet_stream_id, first_packet_offset, first_packet_len);
ok(ret == 0,
"Get one data packet for stream %d, offset %d, len %d",
first_packet_stream_id,
first_packet_offset,
first_packet_len);
ret = detach_viewer_session(session_id);
ok(ret == 0, "Detach viewer session");
ret = list_sessions(&session_id);
ok(ret > 0, "List sessions : %d session(s)", ret);
ret = attach_session(session_id);
ok(ret > 0, "Attach to session, %d streams received", ret);
end:
return exit_status();
}
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