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sink.c
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/*
* Event sink management
*
* Copyright (C) 2000-2019 Willy Tarreau - w@1wt.eu
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, version 2.1
* exclusively.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <import/ist.h>
#include <haproxy/api.h>
#include <haproxy/cfgparse.h>
#include <haproxy/cli.h>
#include <haproxy/errors.h>
#include <haproxy/list.h>
#include <haproxy/log.h>
#include <haproxy/proxy.h>
#include <haproxy/ring.h>
#include <haproxy/signal.h>
#include <haproxy/sink.h>
#include <haproxy/stream_interface.h>
#include <haproxy/time.h>
#include <haproxy/tools.h>
struct list sink_list = LIST_HEAD_INIT(sink_list);
struct sink *cfg_sink;
struct sink *sink_find(const char *name)
{
struct sink *sink;
list_for_each_entry(sink, &sink_list, sink_list)
if (strcmp(sink->name, name) == 0)
return sink;
return NULL;
}
/* creates a new sink and adds it to the list, it's still generic and not fully
* initialized. Returns NULL on allocation failure. If another one already
* exists with the same name, it will be returned. The caller can detect it as
* a newly created one has type SINK_TYPE_NEW.
*/
static struct sink *__sink_new(const char *name, const char *desc, int fmt)
{
struct sink *sink;
sink = sink_find(name);
if (sink)
goto end;
sink = calloc(1, sizeof(*sink));
if (!sink)
goto end;
sink->name = strdup(name);
if (!sink->name)
goto err;
sink->desc = strdup(desc);
if (!sink->desc)
goto err;
sink->fmt = fmt;
sink->type = SINK_TYPE_NEW;
sink->maxlen = BUFSIZE;
/* address will be filled by the caller if needed */
sink->ctx.fd = -1;
sink->ctx.dropped = 0;
HA_RWLOCK_INIT(&sink->ctx.lock);
LIST_APPEND(&sink_list, &sink->sink_list);
end:
return sink;
err:
ha_free(&sink->name);
ha_free(&sink->desc);
ha_free(&sink);
return NULL;
}
/* creates a sink called <name> of type FD associated to fd <fd>, format <fmt>,
* and description <desc>. Returns NULL on allocation failure or conflict.
* Perfect duplicates are merged (same type, fd, and name).
*/
struct sink *sink_new_fd(const char *name, const char *desc, enum log_fmt fmt, int fd)
{
struct sink *sink;
sink = __sink_new(name, desc, fmt);
if (!sink || (sink->type == SINK_TYPE_FD && sink->ctx.fd == fd))
goto end;
if (sink->type != SINK_TYPE_NEW) {
sink = NULL;
goto end;
}
sink->type = SINK_TYPE_FD;
sink->ctx.fd = fd;
end:
return sink;
}
/* creates a sink called <name> of type BUF of size <size>, format <fmt>,
* and description <desc>. Returns NULL on allocation failure or conflict.
* Perfect duplicates are merged (same type and name). If sizes differ, the
* largest one is kept.
*/
struct sink *sink_new_buf(const char *name, const char *desc, enum log_fmt fmt, size_t size)
{
struct sink *sink;
sink = __sink_new(name, desc, fmt);
if (!sink)
goto fail;
if (sink->type == SINK_TYPE_BUFFER) {
/* such a buffer already exists, we may have to resize it */
if (!ring_resize(sink->ctx.ring, size))
goto fail;
goto end;
}
if (sink->type != SINK_TYPE_NEW) {
/* already exists of another type */
goto fail;
}
sink->ctx.ring = ring_new(size);
if (!sink->ctx.ring) {
LIST_DELETE(&sink->sink_list);
free(sink->name);
free(sink->desc);
free(sink);
goto fail;
}
sink->type = SINK_TYPE_BUFFER;
end:
return sink;
fail:
return NULL;
}
/* tries to send <nmsg> message parts (up to 8, ignored above) from message
* array <msg> to sink <sink>. Formatting according to the sink's preference is
* done here. Lost messages are NOT accounted for. It is preferable to call
* sink_write() instead which will also try to emit the number of dropped
* messages when there are any. It returns >0 if it could write anything,
* <=0 otherwise.
*/
ssize_t __sink_write(struct sink *sink, const struct ist msg[], size_t nmsg,
int level, int facility, struct ist *metadata)
{
struct ist *pfx = NULL;
size_t npfx = 0;
if (sink->fmt == LOG_FORMAT_RAW)
goto send;
pfx = build_log_header(sink->fmt, level, facility, metadata, &npfx);
send:
if (sink->type == SINK_TYPE_FD) {
return fd_write_frag_line(sink->ctx.fd, sink->maxlen, pfx, npfx, msg, nmsg, 1);
}
else if (sink->type == SINK_TYPE_BUFFER) {
return ring_write(sink->ctx.ring, sink->maxlen, pfx, npfx, msg, nmsg);
}
return 0;
}
/* Tries to emit a message indicating the number of dropped events. In case of
* success, the amount of drops is reduced by as much. It's supposed to be
* called under an exclusive lock on the sink to avoid multiple produces doing
* the same. On success, >0 is returned, otherwise <=0 on failure.
*/
int sink_announce_dropped(struct sink *sink, int facility)
{
static THREAD_LOCAL struct ist metadata[LOG_META_FIELDS];
static THREAD_LOCAL pid_t curr_pid;
static THREAD_LOCAL char pidstr[16];
unsigned int dropped;
struct buffer msg;
struct ist msgvec[1];
char logbuf[64];
while (unlikely((dropped = sink->ctx.dropped) > 0)) {
chunk_init(&msg, logbuf, sizeof(logbuf));
chunk_printf(&msg, "%u event%s dropped", dropped, dropped > 1 ? "s" : "");
msgvec[0] = ist2(msg.area, msg.data);
if (!metadata[LOG_META_HOST].len) {
if (global.log_send_hostname)
metadata[LOG_META_HOST] = ist2(global.log_send_hostname, strlen(global.log_send_hostname));
}
if (!metadata[LOG_META_TAG].len)
metadata[LOG_META_TAG] = ist2(global.log_tag.area, global.log_tag.data);
if (unlikely(curr_pid != getpid()))
metadata[LOG_META_PID].len = 0;
if (!metadata[LOG_META_PID].len) {
curr_pid = getpid();
ltoa_o(curr_pid, pidstr, sizeof(pidstr));
metadata[LOG_META_PID] = ist2(pidstr, strlen(pidstr));
}
if (__sink_write(sink, msgvec, 1, LOG_NOTICE, facility, metadata) <= 0)
return 0;
/* success! */
HA_ATOMIC_SUB(&sink->ctx.dropped, dropped);
}
return 1;
}
/* parse the "show events" command, returns 1 if a message is returned, otherwise zero */
static int cli_parse_show_events(char **args, char *payload, struct appctx *appctx, void *private)
{
struct sink *sink;
int arg;
args++; // make args[1] the 1st arg
if (!*args[1]) {
/* no arg => report the list of supported sink */
chunk_printf(&trash, "Supported events sinks are listed below. Add -w(wait), -n(new). Any key to stop\n");
list_for_each_entry(sink, &sink_list, sink_list) {
chunk_appendf(&trash, " %-10s : type=%s, %u dropped, %s\n",
sink->name,
sink->type == SINK_TYPE_NEW ? "init" :
sink->type == SINK_TYPE_FD ? "fd" :
sink->type == SINK_TYPE_BUFFER ? "buffer" : "?",
sink->ctx.dropped, sink->desc);
}
trash.area[trash.data] = 0;
return cli_msg(appctx, LOG_WARNING, trash.area);
}
if (!cli_has_level(appctx, ACCESS_LVL_OPER))
return 1;
sink = sink_find(args[1]);
if (!sink)
return cli_err(appctx, "No such event sink");
if (sink->type != SINK_TYPE_BUFFER)
return cli_msg(appctx, LOG_NOTICE, "Nothing to report for this sink");
for (arg = 2; *args[arg]; arg++) {
if (strcmp(args[arg], "-w") == 0)
appctx->ctx.cli.i0 |= 1; // wait mode
else if (strcmp(args[arg], "-n") == 0)
appctx->ctx.cli.i0 |= 2; // seek to new
else if (strcmp(args[arg], "-nw") == 0 || strcmp(args[arg], "-wn") == 0)
appctx->ctx.cli.i0 |= 3; // seek to new + wait
else
return cli_err(appctx, "unknown option");
}
return ring_attach_cli(sink->ctx.ring, appctx);
}
/* Pre-configures a ring proxy to emit connections */
void sink_setup_proxy(struct proxy *px)
{
px->last_change = now.tv_sec;
px->cap = PR_CAP_FE | PR_CAP_BE;
px->maxconn = 0;
px->conn_retries = 1;
px->timeout.server = TICK_ETERNITY;
px->timeout.client = TICK_ETERNITY;
px->timeout.connect = TICK_ETERNITY;
px->accept = NULL;
px->options2 |= PR_O2_INDEPSTR | PR_O2_SMARTCON | PR_O2_SMARTACC;
}
/*
* IO Handler to handle message push to syslog tcp server
*/
static void sink_forward_io_handler(struct appctx *appctx)
{
struct stream_interface *si = appctx->owner;
struct stream *s = si_strm(si);
struct sink *sink = strm_fe(s)->parent;
struct sink_forward_target *sft = appctx->ctx.sft.ptr;
struct ring *ring = sink->ctx.ring;
struct buffer *buf = &ring->buf;
uint64_t msg_len;
size_t len, cnt, ofs;
int ret = 0;
/* if stopping was requested, close immediately */
if (unlikely(stopping))
goto close;
/* for rex because it seems reset to timeout
* and we don't want expire on this case
* with a syslog server
*/
si_oc(si)->rex = TICK_ETERNITY;
/* rto should not change but it seems the case */
si_oc(si)->rto = TICK_ETERNITY;
/* an error was detected */
if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
goto close;
/* con closed by server side */
if ((si_oc(si)->flags & CF_SHUTW))
goto close;
/* if the connection is not established, inform the stream that we want
* to be notified whenever the connection completes.
*/
if (si_opposite(si)->state < SI_ST_EST) {
si_cant_get(si);
si_rx_conn_blk(si);
si_rx_endp_more(si);
return;
}
HA_SPIN_LOCK(SFT_LOCK, &sft->lock);
if (appctx != sft->appctx) {
HA_SPIN_UNLOCK(SFT_LOCK, &sft->lock);
goto close;
}
ofs = sft->ofs;
HA_RWLOCK_WRLOCK(LOGSRV_LOCK, &ring->lock);
LIST_DEL_INIT(&appctx->wait_entry);
HA_RWLOCK_WRUNLOCK(LOGSRV_LOCK, &ring->lock);
HA_RWLOCK_RDLOCK(LOGSRV_LOCK, &ring->lock);
/* explanation for the initialization below: it would be better to do
* this in the parsing function but this would occasionally result in
* dropped events because we'd take a reference on the oldest message
* and keep it while being scheduled. Thus instead let's take it the
* first time we enter here so that we have a chance to pass many
* existing messages before grabbing a reference to a location. This
* value cannot be produced after initialization.
*/
if (unlikely(ofs == ~0)) {
ofs = 0;
HA_ATOMIC_INC(b_peek(buf, ofs));
ofs += ring->ofs;
}
/* in this loop, ofs always points to the counter byte that precedes
* the message so that we can take our reference there if we have to
* stop before the end (ret=0).
*/
if (si_opposite(si)->state == SI_ST_EST) {
/* we were already there, adjust the offset to be relative to
* the buffer's head and remove us from the counter.
*/
ofs -= ring->ofs;
BUG_ON(ofs >= buf->size);
HA_ATOMIC_DEC(b_peek(buf, ofs));
ret = 1;
while (ofs + 1 < b_data(buf)) {
cnt = 1;
len = b_peek_varint(buf, ofs + cnt, &msg_len);
if (!len)
break;
cnt += len;
BUG_ON(msg_len + ofs + cnt + 1 > b_data(buf));
if (unlikely(msg_len + 1 > b_size(&trash))) {
/* too large a message to ever fit, let's skip it */
ofs += cnt + msg_len;
continue;
}
chunk_reset(&trash);
len = b_getblk(buf, trash.area, msg_len, ofs + cnt);
trash.data += len;
trash.area[trash.data++] = '\n';
if (ci_putchk(si_ic(si), &trash) == -1) {
si_rx_room_blk(si);
ret = 0;
break;
}
ofs += cnt + msg_len;
}
HA_ATOMIC_INC(b_peek(buf, ofs));
ofs += ring->ofs;
sft->ofs = ofs;
}
HA_RWLOCK_RDUNLOCK(LOGSRV_LOCK, &ring->lock);
if (ret) {
/* let's be woken up once new data arrive */
HA_RWLOCK_WRLOCK(LOGSRV_LOCK, &ring->lock);
LIST_APPEND(&ring->waiters, &appctx->wait_entry);
HA_RWLOCK_WRUNLOCK(LOGSRV_LOCK, &ring->lock);
si_rx_endp_done(si);
}
HA_SPIN_UNLOCK(SFT_LOCK, &sft->lock);
/* always drain data from server */
co_skip(si_oc(si), si_oc(si)->output);
return;
close:
si_shutw(si);
si_shutr(si);
si_ic(si)->flags |= CF_READ_NULL;
}
/*
* IO Handler to handle message push to syslog tcp server
* using octet counting frames
*/
static void sink_forward_oc_io_handler(struct appctx *appctx)
{
struct stream_interface *si = appctx->owner;
struct stream *s = si_strm(si);
struct sink *sink = strm_fe(s)->parent;
struct sink_forward_target *sft = appctx->ctx.sft.ptr;
struct ring *ring = sink->ctx.ring;
struct buffer *buf = &ring->buf;
uint64_t msg_len;
size_t len, cnt, ofs;
int ret = 0;
char *p;
/* if stopping was requested, close immediately */
if (unlikely(stopping))
goto close;
/* for rex because it seems reset to timeout
* and we don't want expire on this case
* with a syslog server
*/
si_oc(si)->rex = TICK_ETERNITY;
/* rto should not change but it seems the case */
si_oc(si)->rto = TICK_ETERNITY;
/* an error was detected */
if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
goto close;
/* con closed by server side */
if ((si_oc(si)->flags & CF_SHUTW))
goto close;
/* if the connection is not established, inform the stream that we want
* to be notified whenever the connection completes.
*/
if (si_opposite(si)->state < SI_ST_EST) {
si_cant_get(si);
si_rx_conn_blk(si);
si_rx_endp_more(si);
return;
}
HA_SPIN_LOCK(SFT_LOCK, &sft->lock);
if (appctx != sft->appctx) {
HA_SPIN_UNLOCK(SFT_LOCK, &sft->lock);
goto close;
}
ofs = sft->ofs;
HA_RWLOCK_WRLOCK(LOGSRV_LOCK, &ring->lock);
LIST_DEL_INIT(&appctx->wait_entry);
HA_RWLOCK_WRUNLOCK(LOGSRV_LOCK, &ring->lock);
HA_RWLOCK_RDLOCK(LOGSRV_LOCK, &ring->lock);
/* explanation for the initialization below: it would be better to do
* this in the parsing function but this would occasionally result in
* dropped events because we'd take a reference on the oldest message
* and keep it while being scheduled. Thus instead let's take it the
* first time we enter here so that we have a chance to pass many
* existing messages before grabbing a reference to a location. This
* value cannot be produced after initialization.
*/
if (unlikely(ofs == ~0)) {
ofs = 0;
HA_ATOMIC_INC(b_peek(buf, ofs));
ofs += ring->ofs;
}
/* in this loop, ofs always points to the counter byte that precedes
* the message so that we can take our reference there if we have to
* stop before the end (ret=0).
*/
if (si_opposite(si)->state == SI_ST_EST) {
/* we were already there, adjust the offset to be relative to
* the buffer's head and remove us from the counter.
*/
ofs -= ring->ofs;
BUG_ON(ofs >= buf->size);
HA_ATOMIC_DEC(b_peek(buf, ofs));
ret = 1;
while (ofs + 1 < b_data(buf)) {
cnt = 1;
len = b_peek_varint(buf, ofs + cnt, &msg_len);
if (!len)
break;
cnt += len;
BUG_ON(msg_len + ofs + cnt + 1 > b_data(buf));
chunk_reset(&trash);
p = ulltoa(msg_len, trash.area, b_size(&trash));
if (p) {
trash.data = (p - trash.area) + 1;
*p = ' ';
}
if (!p || (trash.data + msg_len > b_size(&trash))) {
/* too large a message to ever fit, let's skip it */
ofs += cnt + msg_len;
continue;
}
trash.data += b_getblk(buf, p + 1, msg_len, ofs + cnt);
if (ci_putchk(si_ic(si), &trash) == -1) {
si_rx_room_blk(si);
ret = 0;
break;
}
ofs += cnt + msg_len;
}
HA_ATOMIC_INC(b_peek(buf, ofs));
ofs += ring->ofs;
sft->ofs = ofs;
}
HA_RWLOCK_RDUNLOCK(LOGSRV_LOCK, &ring->lock);
if (ret) {
/* let's be woken up once new data arrive */
HA_RWLOCK_WRLOCK(LOGSRV_LOCK, &ring->lock);
LIST_APPEND(&ring->waiters, &appctx->wait_entry);
HA_RWLOCK_WRUNLOCK(LOGSRV_LOCK, &ring->lock);
si_rx_endp_done(si);
}
HA_SPIN_UNLOCK(SFT_LOCK, &sft->lock);
/* always drain data from server */
co_skip(si_oc(si), si_oc(si)->output);
return;
close:
si_shutw(si);
si_shutr(si);
si_ic(si)->flags |= CF_READ_NULL;
}
void __sink_forward_session_deinit(struct sink_forward_target *sft)
{
struct stream_interface *si;
struct stream *s;
struct sink *sink;
if (!sft->appctx)
return;
si = sft->appctx->owner;
if (!si)
return;
s = si_strm(si);
if (!s)
return;
sink = strm_fe(s)->parent;
if (!sink)
return;
HA_RWLOCK_WRLOCK(LOGSRV_LOCK, &sink->ctx.ring->lock);
LIST_DEL_INIT(&sft->appctx->wait_entry);
HA_RWLOCK_WRUNLOCK(LOGSRV_LOCK, &sink->ctx.ring->lock);
sft->appctx = NULL;
task_wakeup(sink->forward_task, TASK_WOKEN_MSG);
}
static void sink_forward_session_release(struct appctx *appctx)
{
struct sink_forward_target *sft = appctx->ctx.peers.ptr;
if (!sft)
return;
HA_SPIN_LOCK(SFT_LOCK, &sft->lock);
if (sft->appctx == appctx)
__sink_forward_session_deinit(sft);
HA_SPIN_UNLOCK(SFT_LOCK, &sft->lock);
}
static struct applet sink_forward_applet = {
.obj_type = OBJ_TYPE_APPLET,
.name = "<SINKFWD>", /* used for logging */
.fct = sink_forward_io_handler,
.release = sink_forward_session_release,
};
static struct applet sink_forward_oc_applet = {
.obj_type = OBJ_TYPE_APPLET,
.name = "<SINKFWDOC>", /* used for logging */
.fct = sink_forward_oc_io_handler,
.release = sink_forward_session_release,
};
/*
* Create a new peer session in assigned state (connect will start automatically)
*/
static struct appctx *sink_forward_session_create(struct sink *sink, struct sink_forward_target *sft)
{
struct proxy *p = sink->forward_px;
struct appctx *appctx;
struct session *sess;
struct stream *s;
struct applet *applet = &sink_forward_applet;
if (sft->srv->log_proto == SRV_LOG_PROTO_OCTET_COUNTING)
applet = &sink_forward_oc_applet;
appctx = appctx_new(applet);
if (!appctx)
goto out_close;
appctx->ctx.sft.ptr = (void *)sft;
sess = session_new(p, NULL, &appctx->obj_type);
if (!sess) {
ha_alert("out of memory in peer_session_create().\n");
goto out_free_appctx;
}
if ((s = stream_new(sess, &appctx->obj_type, &BUF_NULL)) == NULL) {
ha_alert("Failed to initialize stream in peer_session_create().\n");
goto out_free_sess;
}
s->target = &sft->srv->obj_type;
if (!sockaddr_alloc(&s->target_addr, &sft->srv->addr, sizeof(sft->srv->addr)))
goto out_free_strm;
s->flags = SF_ASSIGNED|SF_ADDR_SET;
s->si[1].flags |= SI_FL_NOLINGER;
s->do_log = NULL;
s->uniq_id = 0;
s->res.flags |= CF_READ_DONTWAIT;
/* for rto and rex to eternity to not expire on idle recv:
* We are using a syslog server.
*/
s->res.rto = TICK_ETERNITY;
s->res.rex = TICK_ETERNITY;
sft->appctx = appctx;
task_wakeup(s->task, TASK_WOKEN_INIT);
return appctx;
/* Error unrolling */
out_free_strm:
LIST_DELETE(&s->list);
pool_free(pool_head_stream, s);
out_free_sess:
session_free(sess);
out_free_appctx:
appctx_free(appctx);
out_close:
return NULL;
}
/*
* Task to handle connctions to forward servers
*/
static struct task *process_sink_forward(struct task * task, void *context, unsigned int state)
{
struct sink *sink = (struct sink *)context;
struct sink_forward_target *sft = sink->sft;
task->expire = TICK_ETERNITY;
if (!stopping) {
while (sft) {
HA_SPIN_LOCK(SFT_LOCK, &sft->lock);
/* if appctx is NULL, start a new session */
if (!sft->appctx)
sft->appctx = sink_forward_session_create(sink, sft);
HA_SPIN_UNLOCK(SFT_LOCK, &sft->lock);
sft = sft->next;
}
}
else {
while (sft) {
HA_SPIN_LOCK(SFT_LOCK, &sft->lock);
/* awake applet to perform a clean close */
if (sft->appctx)
appctx_wakeup(sft->appctx);
HA_SPIN_UNLOCK(SFT_LOCK, &sft->lock);
sft = sft->next;
}
}
return task;
}
/*
* Init task to manage connctions to forward servers
*
* returns 0 in case of error.
*/
int sink_init_forward(struct sink *sink)
{
sink->forward_task = task_new(MAX_THREADS_MASK);
if (!sink->forward_task)
return 0;
sink->forward_task->process = process_sink_forward;
sink->forward_task->context = (void *)sink;
sink->forward_sighandler = signal_register_task(0, sink->forward_task, 0);
task_wakeup(sink->forward_task, TASK_WOKEN_INIT);
return 1;
}
/*
* Parse "ring" section and create corresponding sink buffer.
*
* The function returns 0 in success case, otherwise, it returns error
* flags.
*/
int cfg_parse_ring(const char *file, int linenum, char **args, int kwm)
{
int err_code = 0;
const char *inv;
size_t size = BUFSIZE;
struct proxy *p;
if (strcmp(args[0], "ring") == 0) { /* new peers section */
if (!*args[1]) {
ha_alert("parsing [%s:%d] : missing ring name.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
inv = invalid_char(args[1]);
if (inv) {
ha_alert("parsing [%s:%d] : invalid ring name '%s' (character '%c' is not permitted).\n", file, linenum, args[1], *inv);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
if (sink_find(args[1])) {
ha_alert("parsing [%s:%d] : sink named '%s' already exists.\n", file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
cfg_sink = sink_new_buf(args[1], args[1], LOG_FORMAT_RAW, size);
if (!cfg_sink || cfg_sink->type != SINK_TYPE_BUFFER) {
ha_alert("parsing [%s:%d] : unable to create a new sink buffer for ring '%s'.\n", file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
/* allocate new proxy to handle forwards */
p = calloc(1, sizeof *p);
if (!p) {
ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
init_new_proxy(p);
sink_setup_proxy(p);
p->parent = cfg_sink;
p->id = strdup(args[1]);
p->conf.args.file = p->conf.file = strdup(file);
p->conf.args.line = p->conf.line = linenum;
cfg_sink->forward_px = p;
}
else if (strcmp(args[0], "size") == 0) {
size = atol(args[1]);
if (!size) {
ha_alert("parsing [%s:%d] : invalid size '%s' for new sink buffer.\n", file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
if (!cfg_sink || (cfg_sink->type != SINK_TYPE_BUFFER)
|| !ring_resize(cfg_sink->ctx.ring, size)) {
ha_alert("parsing [%s:%d] : fail to set sink buffer size '%s'.\n", file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
}
else if (strcmp(args[0],"server") == 0) {
err_code |= parse_server(file, linenum, args, cfg_sink->forward_px, NULL,
SRV_PARSE_PARSE_ADDR|SRV_PARSE_INITIAL_RESOLVE);
}
else if (strcmp(args[0],"timeout") == 0) {
if (!cfg_sink || !cfg_sink->forward_px) {
ha_alert("parsing [%s:%d] : unable to set timeout '%s'.\n", file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
if (strcmp(args[1], "connect") == 0 ||
strcmp(args[1], "server") == 0) {
const char *res;
unsigned int tout;
if (!*args[2]) {
ha_alert("parsing [%s:%d] : '%s %s' expects <time> as argument.\n",
file, linenum, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
res = parse_time_err(args[2], &tout, TIME_UNIT_MS);
if (res == PARSE_TIME_OVER) {
ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s %s>, maximum value is 2147483647 ms (~24.8 days).\n",
file, linenum, args[2], args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
else if (res == PARSE_TIME_UNDER) {
ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s %s>, minimum non-null value is 1 ms.\n",
file, linenum, args[2], args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
else if (res) {
ha_alert("parsing [%s:%d]: unexpected character '%c' in argument to <%s %s>.\n",
file, linenum, *res, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
if (args[1][2] == 'c')
cfg_sink->forward_px->timeout.connect = tout;
else
cfg_sink->forward_px->timeout.server = tout;
}
}
else if (strcmp(args[0],"format") == 0) {
if (!cfg_sink) {
ha_alert("parsing [%s:%d] : unable to set format '%s'.\n", file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
cfg_sink->fmt = get_log_format(args[1]);
if (cfg_sink->fmt == LOG_FORMAT_UNSPEC) {
ha_alert("parsing [%s:%d] : unknown format '%s'.\n", file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
}
else if (strcmp(args[0],"maxlen") == 0) {
if (!cfg_sink) {
ha_alert("parsing [%s:%d] : unable to set event max length '%s'.\n", file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
cfg_sink->maxlen = atol(args[1]);
if (!cfg_sink->maxlen) {
ha_alert("parsing [%s:%d] : invalid size '%s' for new sink buffer.\n", file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
}
else if (strcmp(args[0],"description") == 0) {
if (!cfg_sink) {
ha_alert("parsing [%s:%d] : unable to set description '%s'.\n", file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
if (!*args[1]) {
ha_alert("parsing [%s:%d] : missing ring description text.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
free(cfg_sink->desc);
cfg_sink->desc = strdup(args[1]);
if (!cfg_sink->desc) {
ha_alert("parsing [%s:%d] : fail to set description '%s'.\n", file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
}
else {
ha_alert("parsing [%s:%d] : unknown statement '%s'.\n", file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto err;
}
err:
return err_code;
}
/* Creates an new sink buffer from a log server.
*
* It uses the logsrvaddress to declare a forward
* server for this buffer. And it initializes the
* forwarding.
*
* The function returns a pointer on the
* allocated struct sink if allocate
* and initialize succeed, else if it fails
* it returns NULL.
*
* Note: the sink is created using the name
* specified into logsrv->ring_name
*/
struct sink *sink_new_from_logsrv(struct logsrv *logsrv)
{
struct proxy *p = NULL;
struct sink *sink = NULL;
struct server *srv = NULL;
struct sink_forward_target *sft = NULL;
/* allocate new proxy to handle
* forward to a stream server
*/
p = calloc(1, sizeof *p);
if (!p) {
goto error;
}
init_new_proxy(p);
sink_setup_proxy(p);
p->id = strdup(logsrv->ring_name);
p->conf.args.file = p->conf.file = strdup(logsrv->conf.file);
p->conf.args.line = p->conf.line = logsrv->conf.line;
/* allocate a new server to forward messages
* from ring buffer
*/
srv = new_server(p);
if (!srv)
goto error;
/* init server */
srv->id = strdup(logsrv->ring_name);
srv->conf.file = strdup(logsrv->conf.file);
srv->conf.line = logsrv->conf.line;
srv->addr = logsrv->addr;
srv->svc_port = get_host_port(&logsrv->addr);
HA_SPIN_INIT(&srv->lock);
/* process per thread init */
if (srv_init_per_thr(srv) == -1)
goto error;
/* the servers are linked backwards
* first into proxy
*/
p->srv = srv;
srv->next = p->srv;
/* allocate sink_forward_target descriptor */
sft = calloc(1, sizeof(*sft));
if (!sft)
goto error;
/* init sink_forward_target offset */
sft->srv = srv;
sft->appctx = NULL;
sft->ofs = ~0;
HA_SPIN_INIT(&sft->lock);
/* prepare description for the sink */
chunk_reset(&trash);
chunk_printf(&trash, "created from logserver declared into '%s' at line %d", logsrv->conf.file, logsrv->conf.line);
/* allocate a new sink buffer */
sink = sink_new_buf(logsrv->ring_name, trash.area, logsrv->format, BUFSIZE);
if (!sink || sink->type != SINK_TYPE_BUFFER) {
goto error;