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git01.mediatek.com / haproxy / 3e79479348290d032f468aafe2664fc35e2c283a / . / src / dumpstats.c
blob: 70b96b5af80793893eead5dc6be5aee22a3e3e0a [file] [log] [blame]
/*
* Functions dedicated to statistics output
*
* Copyright 2000-2009 Willy Tarreau <w@1wt.eu>
* Copyright 2007-2009 Krzysztof Piotr Oledzki <ole@ans.pl>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
*/
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pwd.h>
#include <grp.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <common/cfgparse.h>
#include <common/compat.h>
#include <common/config.h>
#include <common/debug.h>
#include <common/memory.h>
#include <common/mini-clist.h>
#include <common/standard.h>
#include <common/ticks.h>
#include <common/time.h>
#include <common/uri_auth.h>
#include <common/version.h>
#include <types/global.h>
#include <proto/backend.h>
#include <proto/buffers.h>
#include <proto/checks.h>
#include <proto/dumpstats.h>
#include <proto/fd.h>
#include <proto/freq_ctr.h>
#include <proto/pipe.h>
#include <proto/proto_uxst.h>
#include <proto/proxy.h>
#include <proto/session.h>
#include <proto/server.h>
#include <proto/stream_interface.h>
#include <proto/task.h>
const char stats_sock_usage_msg[] =
"Unknown command. Please enter one of the following commands only :\n"
" clear counters : clear max statistics counters (add 'all' for all counters)\n"
" help : this message\n"
" prompt : toggle interactive mode with prompt\n"
" quit : disconnect\n"
" show info : report information about the running process\n"
" show stat : report counters for each proxy and server\n"
" show errors : report last request and response errors for each proxy\n"
" show sess : report the list of current sessions\n"
" get weight : report a server's current weight\n"
" set weight : change a server's weight\n"
"";
const char stats_permission_denied_msg[] =
"Permission denied\n"
"";
/* This function parses a "stats" statement in the "global" section. It returns
* -1 if there is any error, otherwise zero. If it returns -1, it may write an
* error message into ther <err> buffer, for at most <errlen> bytes, trailing
* zero included. The trailing '\n' must not be written. The function must be
* called with <args> pointing to the first word after "stats".
*/
static int stats_parse_global(char **args, int section_type, struct proxy *curpx,
struct proxy *defpx, char *err, int errlen)
{
args++;
if (!strcmp(args[0], "socket")) {
struct sockaddr_un su;
int cur_arg;
if (*args[1] == 0) {
snprintf(err, errlen, "'stats socket' in global section expects a path to a UNIX socket");
return -1;
}
if (global.stats_sock.state != LI_NEW) {
snprintf(err, errlen, "'stats socket' already specified in global section");
return -1;
}
su.sun_family = AF_UNIX;
strncpy(su.sun_path, args[1], sizeof(su.sun_path));
su.sun_path[sizeof(su.sun_path) - 1] = 0;
memcpy(&global.stats_sock.addr, &su, sizeof(su)); // guaranteed to fit
if (!global.stats_fe) {
if ((global.stats_fe = (struct proxy *)calloc(1, sizeof(struct proxy))) == NULL) {
snprintf(err, errlen, "out of memory");
return -1;
}
LIST_INIT(&global.stats_fe->pendconns);
LIST_INIT(&global.stats_fe->acl);
LIST_INIT(&global.stats_fe->block_cond);
LIST_INIT(&global.stats_fe->redirect_rules);
LIST_INIT(&global.stats_fe->mon_fail_cond);
LIST_INIT(&global.stats_fe->switching_rules);
LIST_INIT(&global.stats_fe->tcp_req.inspect_rules);
/* Timeouts are defined as -1, so we cannot use the zeroed area
* as a default value.
*/
proxy_reset_timeouts(global.stats_fe);
global.stats_fe->last_change = now.tv_sec;
global.stats_fe->id = strdup("GLOBAL");
global.stats_fe->cap = PR_CAP_FE;
}
global.stats_sock.state = LI_INIT;
global.stats_sock.options = LI_O_NONE;
global.stats_sock.accept = uxst_event_accept;
global.stats_sock.handler = process_session;
global.stats_sock.analysers = 0;
global.stats_sock.nice = -64; /* we want to boost priority for local stats */
global.stats_sock.private = global.stats_fe; /* must point to the frontend */
global.stats_sock.perm.ux.level = ACCESS_LVL_OPER; /* default access level */
global.stats_fe->timeout.client = MS_TO_TICKS(10000); /* default timeout of 10 seconds */
global.stats_sock.timeout = &global.stats_fe->timeout.client;
global.stats_sock.next = global.stats_fe->listen;
global.stats_fe->listen = &global.stats_sock;
cur_arg = 2;
while (*args[cur_arg]) {
if (!strcmp(args[cur_arg], "uid")) {
global.stats_sock.perm.ux.uid = atol(args[cur_arg + 1]);
cur_arg += 2;
}
else if (!strcmp(args[cur_arg], "gid")) {
global.stats_sock.perm.ux.gid = atol(args[cur_arg + 1]);
cur_arg += 2;
}
else if (!strcmp(args[cur_arg], "mode")) {
global.stats_sock.perm.ux.mode = strtol(args[cur_arg + 1], NULL, 8);
cur_arg += 2;
}
else if (!strcmp(args[cur_arg], "user")) {
struct passwd *user;
user = getpwnam(args[cur_arg + 1]);
if (!user) {
snprintf(err, errlen, "unknown user '%s' in 'global' section ('stats user')",
args[cur_arg + 1]);
return -1;
}
global.stats_sock.perm.ux.uid = user->pw_uid;
cur_arg += 2;
}
else if (!strcmp(args[cur_arg], "group")) {
struct group *group;
group = getgrnam(args[cur_arg + 1]);
if (!group) {
snprintf(err, errlen, "unknown group '%s' in 'global' section ('stats group')",
args[cur_arg + 1]);
return -1;
}
global.stats_sock.perm.ux.gid = group->gr_gid;
cur_arg += 2;
}
else if (!strcmp(args[cur_arg], "level")) {
if (!strcmp(args[cur_arg+1], "user"))
global.stats_sock.perm.ux.level = ACCESS_LVL_USER;
else if (!strcmp(args[cur_arg+1], "operator"))
global.stats_sock.perm.ux.level = ACCESS_LVL_OPER;
else if (!strcmp(args[cur_arg+1], "admin"))
global.stats_sock.perm.ux.level = ACCESS_LVL_ADMIN;
else {
snprintf(err, errlen, "'stats socket level' only supports 'user', 'operator', and 'admin'");
return -1;
}
cur_arg += 2;
}
else {
snprintf(err, errlen, "'stats socket' only supports 'user', 'uid', 'group', 'gid', 'level', and 'mode'");
return -1;
}
}
uxst_add_listener(&global.stats_sock);
global.maxsock++;
}
else if (!strcmp(args[0], "timeout")) {
unsigned timeout;
const char *res = parse_time_err(args[1], &timeout, TIME_UNIT_MS);
if (res) {
snprintf(err, errlen, "unexpected character '%c' in 'stats timeout' in 'global' section", *res);
return -1;
}
if (!timeout) {
snprintf(err, errlen, "a positive value is expected for 'stats timeout' in 'global section'");
return -1;
}
global.stats_fe->timeout.client = MS_TO_TICKS(timeout);
}
else if (!strcmp(args[0], "maxconn")) {
int maxconn = atol(args[1]);
if (maxconn <= 0) {
snprintf(err, errlen, "a positive value is expected for 'stats maxconn' in 'global section'");
return -1;
}
global.maxsock -= global.stats_sock.maxconn;
global.stats_sock.maxconn = maxconn;
global.maxsock += global.stats_sock.maxconn;
}
else {
snprintf(err, errlen, "'stats' only supports 'socket', 'maxconn' and 'timeout' in 'global' section");
return -1;
}
return 0;
}
int print_csv_header(struct chunk *msg)
{
return chunk_printf(msg,
"# pxname,svname,"
"qcur,qmax,"
"scur,smax,slim,stot,"
"bin,bout,"
"dreq,dresp,"
"ereq,econ,eresp,"
"wretr,wredis,"
"status,weight,act,bck,"
"chkfail,chkdown,lastchg,downtime,qlimit,"
"pid,iid,sid,throttle,lbtot,tracked,type,"
"rate,rate_lim,rate_max,"
"check_status,check_code,check_duration,"
"hrsp_1xx,hrsp_2xx,hrsp_3xx,hrsp_4xx,hrsp_5xx,hrsp_other,"
"\n");
}
/* Processes the stats interpreter on the statistics socket. This function is
* called from an applet running in a stream interface. The function returns 1
* if the request was understood, otherwise zero. It sets si->st0 to a value
* designating the function which will have to process the request, which can
* also be the print function to display the return message set into cli.msg.
*/
int stats_sock_parse_request(struct stream_interface *si, char *line)
{
struct session *s = si->private;
char *args[MAX_STATS_ARGS + 1];
int arg;
while (isspace((unsigned char)*line))
line++;
arg = 0;
args[arg] = line;
while (*line && arg < MAX_STATS_ARGS) {
if (isspace((unsigned char)*line)) {
*line++ = '\0';
while (isspace((unsigned char)*line))
line++;
args[++arg] = line;
continue;
}
line++;
}
while (++arg <= MAX_STATS_ARGS)
args[arg] = line;
s->data_ctx.stats.flags = 0;
if (strcmp(args[0], "show") == 0) {
if (strcmp(args[1], "stat") == 0) {
if (*args[2] && *args[3] && *args[4]) {
s->data_ctx.stats.flags |= STAT_BOUND;
s->data_ctx.stats.iid = atoi(args[2]);
s->data_ctx.stats.type = atoi(args[3]);
s->data_ctx.stats.sid = atoi(args[4]);
}
s->data_ctx.stats.flags |= STAT_SHOW_STAT;
s->data_ctx.stats.flags |= STAT_FMT_CSV;
s->data_state = DATA_ST_INIT;
si->st0 = STAT_CLI_O_INFO; // stats_dump_raw_to_buffer
}
else if (strcmp(args[1], "info") == 0) {
s->data_ctx.stats.flags |= STAT_SHOW_INFO;
s->data_ctx.stats.flags |= STAT_FMT_CSV;
s->data_state = DATA_ST_INIT;
si->st0 = STAT_CLI_O_INFO; // stats_dump_raw_to_buffer
}
else if (strcmp(args[1], "sess") == 0) {
s->data_state = DATA_ST_INIT;
if (s->listener->perm.ux.level < ACCESS_LVL_OPER) {
s->data_ctx.cli.msg = stats_permission_denied_msg;
si->st0 = STAT_CLI_PRINT;
return 1;
}
si->st0 = STAT_CLI_O_SESS; // stats_dump_sess_to_buffer
}
else if (strcmp(args[1], "errors") == 0) {
if (s->listener->perm.ux.level < ACCESS_LVL_OPER) {
s->data_ctx.cli.msg = stats_permission_denied_msg;
si->st0 = STAT_CLI_PRINT;
return 1;
}
if (*args[2])
s->data_ctx.errors.iid = atoi(args[2]);
else
s->data_ctx.errors.iid = -1;
s->data_ctx.errors.px = NULL;
s->data_state = DATA_ST_INIT;
si->st0 = STAT_CLI_O_ERR; // stats_dump_errors_to_buffer
}
else { /* neither "stat" nor "info" nor "sess" nor "errors"*/
return 0;
}
}
else if (strcmp(args[0], "clear") == 0) {
if (strcmp(args[1], "counters") == 0) {
struct proxy *px;
struct server *sv;
struct listener *li;
int clrall = 0;
if (strcmp(args[2], "all") == 0)
clrall = 1;
/* check permissions */
if (s->listener->perm.ux.level < ACCESS_LVL_OPER ||
(clrall && s->listener->perm.ux.level < ACCESS_LVL_ADMIN)) {
s->data_ctx.cli.msg = stats_permission_denied_msg;
si->st0 = STAT_CLI_PRINT;
return 1;
}
for (px = proxy; px; px = px->next) {
if (clrall)
memset(&px->counters, 0, sizeof(px->counters));
else {
px->counters.feconn_max = 0;
px->counters.beconn_max = 0;
px->counters.fe_sps_max = 0;
px->counters.be_sps_max = 0;
px->counters.nbpend_max = 0;
}
for (sv = px->srv; sv; sv = sv->next)
if (clrall)
memset(&sv->counters, 0, sizeof(sv->counters));
else {
sv->counters.cur_sess_max = 0;
sv->counters.nbpend_max = 0;
sv->counters.sps_max = 0;
}
for (li = px->listen; li; li = li->next)
if (li->counters) {
if (clrall)
memset(li->counters, 0, sizeof(*li->counters));
else
li->counters->conn_max = 0;
}
}
return 1;
}
else {
return 0;
}
}
else if (strcmp(args[0], "get") == 0) {
if (strcmp(args[1], "weight") == 0) {
struct proxy *px;
struct server *sv;
/* split "backend/server" and make <line> point to server */
for (line = args[2]; *line; line++)
if (*line == '/') {
*line++ = '\0';
break;
}
if (!*line) {
s->data_ctx.cli.msg = "Require 'backend/server'.\n";
si->st0 = STAT_CLI_PRINT;
return 1;
}
if (!get_backend_server(args[2], line, &px, &sv)) {
s->data_ctx.cli.msg = px ? "No such server.\n" : "No such backend.\n";
si->st0 = STAT_CLI_PRINT;
return 1;
}
/* return server's effective weight at the moment */
snprintf(trash, sizeof(trash), "%d (initial %d)\n", sv->uweight, sv->iweight);
buffer_feed(si->ib, trash);
return 1;
}
else { /* not "get weight" */
return 0;
}
}
else if (strcmp(args[0], "set") == 0) {
if (strcmp(args[1], "weight") == 0) {
struct proxy *px;
struct server *sv;
int w;
if (s->listener->perm.ux.level < ACCESS_LVL_ADMIN) {
s->data_ctx.cli.msg = stats_permission_denied_msg;
si->st0 = STAT_CLI_PRINT;
return 1;
}
/* split "backend/server" and make <line> point to server */
for (line = args[2]; *line; line++)
if (*line == '/') {
*line++ = '\0';
break;
}
if (!*line || !*args[3]) {
s->data_ctx.cli.msg = "Require 'backend/server' and 'weight' or 'weight%'.\n";
si->st0 = STAT_CLI_PRINT;
return 1;
}
if (!get_backend_server(args[2], line, &px, &sv)) {
s->data_ctx.cli.msg = px ? "No such server.\n" : "No such backend.\n";
si->st0 = STAT_CLI_PRINT;
return 1;
}
/* if the weight is terminated with '%', it is set relative to
* the initial weight, otherwise it is absolute.
*/
w = atoi(args[3]);
if (strchr(args[3], '%') != NULL) {
if (w < 0 || w > 100) {
s->data_ctx.cli.msg = "Relative weight can only be set between 0 and 100% inclusive.\n";
si->st0 = STAT_CLI_PRINT;
return 1;
}
w = sv->iweight * w / 100;
}
else {
if (w < 0 || w > 256) {
s->data_ctx.cli.msg = "Absolute weight can only be between 0 and 256 inclusive.\n";
si->st0 = STAT_CLI_PRINT;
return 1;
}
}
if (w && w != sv->iweight && !(px->lbprm.algo & BE_LB_PROP_DYN)) {
s->data_ctx.cli.msg = "Backend is using a static LB algorithm and only accepts weights '0%' and '100%'.\n";
si->st0 = STAT_CLI_PRINT;
return 1;
}
sv->uweight = w;
if (px->lbprm.algo & BE_LB_PROP_DYN) {
/* we must take care of not pushing the server to full throttle during slow starts */
if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
else
sv->eweight = BE_WEIGHT_SCALE;
sv->eweight *= sv->uweight;
} else {
sv->eweight = sv->uweight;
}
/* static LB algorithms are a bit harder to update */
if (px->lbprm.update_server_eweight)
px->lbprm.update_server_eweight(sv);
else if (sv->eweight)
px->lbprm.set_server_status_up(sv);
else
px->lbprm.set_server_status_down(sv);
return 1;
}
else { /* not "set weight" */
return 0;
}
}
else { /* not "show" nor "clear" nor "get" nor "set" */
return 0;
}
return 1;
}
/* This I/O handler runs as an applet embedded in a stream interface. It is
* used to processes I/O from/to the stats unix socket. The system relies on a
* state machine handling requests and various responses. We read a request,
* then we process it and send the response, and we possibly display a prompt.
* Then we can read again. The state is stored in si->st0 and is one of the
* STAT_CLI_* constants. si->st1 is used to indicate whether prompt is enabled
* or not.
*/
void stats_io_handler(struct stream_interface *si)
{
struct session *s = si->private;
struct buffer *req = si->ob;
struct buffer *res = si->ib;
int reql;
int len;
if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
goto out;
while (1) {
if (si->st0 == STAT_CLI_INIT) {
/* Stats output not initialized yet */
memset(&s->data_ctx.stats, 0, sizeof(s->data_ctx.stats));
s->data_source = DATA_SRC_STATS;
si->st0 = STAT_CLI_GETREQ;
}
else if (si->st0 == STAT_CLI_END) {
/* Let's close for real now. We just close the request
* side, the conditions below will complete if needed.
*/
si->shutw(si);
break;
}
else if (si->st0 == STAT_CLI_GETREQ) {
/* ensure we have some output room left in the event we
* would want to return some info right after parsing.
*/
if (buffer_almost_full(si->ib))
break;
reql = buffer_si_peekline(si->ob, trash, sizeof(trash));
if (reql <= 0) { /* closed or EOL not found */
if (reql == 0)
break;
si->st0 = STAT_CLI_END;
continue;
}
/* seek for a possible semi-colon. If we find one, we
* replace it with an LF and skip only this part.
*/
for (len = 0; len < reql; len++)
if (trash[len] == ';') {
trash[len] = '\n';
reql = len + 1;
break;
}
/* now it is time to check that we have a full line,
* remove the trailing \n and possibly \r, then cut the
* line.
*/
len = reql - 1;
if (trash[len] != '\n') {
si->st0 = STAT_CLI_END;
continue;
}
if (len && trash[len-1] == '\r')
len--;
trash[len] = '\0';
si->st0 = STAT_CLI_PROMPT;
if (len) {
if (strcmp(trash, "quit") == 0) {
si->st0 = STAT_CLI_END;
continue;
}
else if (strcmp(trash, "prompt") == 0)
si->st1 = !si->st1;
else if (strcmp(trash, "help") == 0 ||
!stats_sock_parse_request(si, trash)) {
s->data_ctx.cli.msg = stats_sock_usage_msg;
si->st0 = STAT_CLI_PRINT;
}
/* NB: stats_sock_parse_request() may have put
* another STAT_CLI_O_* into si->st0.
*/
}
else if (!si->st1) {
/* if prompt is disabled, print help on empty lines,
* so that the user at least knows how to enable
* prompt and find help.
*/
s->data_ctx.cli.msg = stats_sock_usage_msg;
si->st0 = STAT_CLI_PRINT;
}
/* re-adjust req buffer */
buffer_skip(si->ob, reql);
req->flags |= BF_READ_DONTWAIT; /* we plan to read small requests */
}
else { /* output functions: first check if the output buffer is closed then abort */
if (res->flags & (BF_SHUTR_NOW|BF_SHUTR)) {
si->st0 = STAT_CLI_END;
continue;
}
switch (si->st0) {
case STAT_CLI_PRINT:
if (buffer_feed(si->ib, s->data_ctx.cli.msg) < 0)
si->st0 = STAT_CLI_PROMPT;
break;
case STAT_CLI_O_INFO:
if (stats_dump_raw_to_buffer(s, res))
si->st0 = STAT_CLI_PROMPT;
break;
case STAT_CLI_O_SESS:
if (stats_dump_sess_to_buffer(s, res))
si->st0 = STAT_CLI_PROMPT;
break;
case STAT_CLI_O_ERR: /* errors dump */
if (stats_dump_errors_to_buffer(s, res))
si->st0 = STAT_CLI_PROMPT;
break;
default: /* abnormal state */
si->st0 = STAT_CLI_PROMPT;
break;
}
/* The post-command prompt is either LF alone or LF + '> ' in interactive mode */
if (si->st0 == STAT_CLI_PROMPT) {
if (buffer_feed(si->ib, si->st1 ? "\n> " : "\n") < 0)
si->st0 = STAT_CLI_GETREQ;
}
/* If the output functions are still there, it means they require more room. */
if (si->st0 >= STAT_CLI_OUTPUT)
break;
/* Now we close the output if one of the writers did so,
* or if we're not in interactive mode and the request
* buffer is empty. This still allows pipelined requests
* to be sent in non-interactive mode.
*/
if ((res->flags & (BF_SHUTW|BF_SHUTW_NOW)) || (!si->st1 && !req->send_max)) {
si->st0 = STAT_CLI_END;
continue;
}
/* switch state back to GETREQ to read next requests */
si->st0 = STAT_CLI_GETREQ;
}
}
if ((res->flags & BF_SHUTR) && (si->state == SI_ST_EST) && (si->st0 != STAT_CLI_GETREQ)) {
DPRINTF(stderr, "%s@%d: si to buf closed. req=%08x, res=%08x, st=%d\n",
__FUNCTION__, __LINE__, req->flags, res->flags, si->state);
/* Other size has closed, let's abort if we have no more processing to do
* and nothing more to consume. This is comparable to a broken pipe, so
* we forward the close to the request side so that it flows upstream to
* the client.
*/
si->shutw(si);
}
if ((req->flags & BF_SHUTW) && (si->state == SI_ST_EST) && (si->st0 < STAT_CLI_OUTPUT)) {
DPRINTF(stderr, "%s@%d: buf to si closed. req=%08x, res=%08x, st=%d\n",
__FUNCTION__, __LINE__, req->flags, res->flags, si->state);
/* We have no more processing to do, and nothing more to send, and
* the client side has closed. So we'll forward this state downstream
* on the response buffer.
*/
si->shutr(si);
res->flags |= BF_READ_NULL;
}
/* update all other flags and resync with the other side */
si->update(si);
/* we don't want to expire timeouts while we're processing requests */
si->ib->rex = TICK_ETERNITY;
si->ob->wex = TICK_ETERNITY;
out:
DPRINTF(stderr, "%s@%d: st=%d, rqf=%x, rpf=%x, rql=%d, rqs=%d, rl=%d, rs=%d\n",
__FUNCTION__, __LINE__,
si->state, req->flags, res->flags, req->l, req->send_max, res->l, res->send_max);
if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO)) {
/* check that we have released everything then unregister */
stream_int_unregister_handler(si);
}
}
/* This function is called to send output to the response buffer.
* It dumps statistics onto the output buffer <rep> owned by session <s>.
* s->data_ctx must have been zeroed first, and the flags properly set.
* It returns 0 as long as it does not complete, non-zero upon completion.
* Some states are not used but it makes the code more similar to other
* functions which handle stats too.
*/
int stats_dump_raw_to_buffer(struct session *s, struct buffer *rep)
{
struct proxy *px;
struct chunk msg;
unsigned int up;
chunk_init(&msg, trash, sizeof(trash));
switch (s->data_state) {
case DATA_ST_INIT:
/* the function had not been called yet */
s->data_state = DATA_ST_HEAD;
/* fall through */
case DATA_ST_HEAD:
if (s->data_ctx.stats.flags & STAT_SHOW_STAT) {
print_csv_header(&msg);
if (buffer_feed_chunk(rep, &msg) >= 0)
return 0;
}
s->data_state = DATA_ST_INFO;
/* fall through */
case DATA_ST_INFO:
up = (now.tv_sec - start_date.tv_sec);
if (s->data_ctx.stats.flags & STAT_SHOW_INFO) {
chunk_printf(&msg,
"Name: " PRODUCT_NAME "\n"
"Version: " HAPROXY_VERSION "\n"
"Release_date: " HAPROXY_DATE "\n"
"Nbproc: %d\n"
"Process_num: %d\n"
"Pid: %d\n"
"Uptime: %dd %dh%02dm%02ds\n"
"Uptime_sec: %d\n"
"Memmax_MB: %d\n"
"Ulimit-n: %d\n"
"Maxsock: %d\n"
"Maxconn: %d\n"
"Maxpipes: %d\n"
"CurrConns: %d\n"
"PipesUsed: %d\n"
"PipesFree: %d\n"
"Tasks: %d\n"
"Run_queue: %d\n"
"node: %s\n"
"description: %s\n"
"",
global.nbproc,
relative_pid,
pid,
up / 86400, (up % 86400) / 3600, (up % 3600) / 60, (up % 60),
up,
global.rlimit_memmax,
global.rlimit_nofile,
global.maxsock, global.maxconn, global.maxpipes,
actconn, pipes_used, pipes_free,
nb_tasks_cur, run_queue_cur,
global.node, global.desc?global.desc:""
);
if (buffer_feed_chunk(rep, &msg) >= 0)
return 0;
}
s->data_ctx.stats.px = proxy;
s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
s->data_ctx.stats.sv = NULL;
s->data_ctx.stats.sv_st = 0;
s->data_state = DATA_ST_LIST;
/* fall through */
case DATA_ST_LIST:
/* dump proxies */
if (s->data_ctx.stats.flags & STAT_SHOW_STAT) {
while (s->data_ctx.stats.px) {
px = s->data_ctx.stats.px;
/* skip the disabled proxies and non-networked ones */
if (px->state != PR_STSTOPPED &&
(px->cap & (PR_CAP_FE | PR_CAP_BE))) {
if (stats_dump_proxy(s, px, NULL) == 0)
return 0;
}
s->data_ctx.stats.px = px->next;
s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
}
/* here, we just have reached the last proxy */
}
s->data_state = DATA_ST_END;
/* fall through */
case DATA_ST_END:
s->data_state = DATA_ST_FIN;
/* fall through */
case DATA_ST_FIN:
return 1;
default:
/* unknown state ! */
s->data_state = DATA_ST_FIN;
return 1;
}
}
/* This I/O handler runs as an applet embedded in a stream interface. It is
* used to send HTTP stats over a TCP socket. The mechanism is very simple.
* si->st0 becomes non-zero once the transfer is finished. The handler
* automatically unregisters itself once transfer is complete.
*/
void http_stats_io_handler(struct stream_interface *si)
{
struct session *s = si->private;
struct buffer *req = si->ob;
struct buffer *res = si->ib;
if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
goto out;
/* check that the output is not closed */
if (res->flags & (BF_SHUTW|BF_SHUTW_NOW))
si->st0 = 1;
if (!si->st0) {
if (stats_dump_http(s, res, s->be->uri_auth)) {
si->st0 = 1;
si->shutw(si);
}
}
if ((res->flags & BF_SHUTR) && (si->state == SI_ST_EST))
si->shutw(si);
if ((req->flags & BF_SHUTW) && (si->state == SI_ST_EST) && si->st0) {
si->shutr(si);
res->flags |= BF_READ_NULL;
}
/* update all other flags and resync with the other side */
si->update(si);
/* we don't want to expire timeouts while we're processing requests */
si->ib->rex = TICK_ETERNITY;
si->ob->wex = TICK_ETERNITY;
out:
if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO)) {
/* check that we have released everything then unregister */
stream_int_unregister_handler(si);
}
}
/*
* Produces statistics data for the session <s>. Expects to be called with
* client socket shut down on input. It stops by itself by unsetting the
* BF_HIJACK flag from the buffer, which it uses to keep on being called
* when there is free space in the buffer, of simply by letting an empty buffer
* upon return.s->data_ctx must have been zeroed before the first call, and the
* flags set. It returns 0 if it had to stop writing data and an I/O is needed,
* 1 if the dump is finished and the session must be closed, or -1 in case of
* any error.
*/
int stats_dump_http(struct session *s, struct buffer *rep, struct uri_auth *uri)
{
struct proxy *px;
struct chunk msg;
unsigned int up;
chunk_init(&msg, trash, sizeof(trash));
switch (s->data_state) {
case DATA_ST_INIT:
chunk_printf(&msg,
"HTTP/1.0 200 OK\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: %s\r\n",
(s->data_ctx.stats.flags & STAT_FMT_CSV) ? "text/plain" : "text/html");
if (uri->refresh > 0 && !(s->data_ctx.stats.flags & STAT_NO_REFRESH))
chunk_printf(&msg, "Refresh: %d\r\n",
uri->refresh);
chunk_printf(&msg, "\r\n");
s->txn.status = 200;
if (buffer_feed_chunk(rep, &msg) >= 0)
return 0;
if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
s->flags |= SN_ERR_PRXCOND; // to mark that it comes from the proxy
if (!(s->flags & SN_FINST_MASK))
s->flags |= SN_FINST_R;
if (s->txn.meth == HTTP_METH_HEAD) {
/* that's all we return in case of HEAD request */
s->data_state = DATA_ST_FIN;
return 1;
}
s->data_state = DATA_ST_HEAD; /* let's start producing data */
/* fall through */
case DATA_ST_HEAD:
if (!(s->data_ctx.stats.flags & STAT_FMT_CSV)) {
/* WARNING! This must fit in the first buffer !!! */
chunk_printf(&msg,
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\"\n"
"\"http://www.w3.org/TR/html4/loose.dtd\">\n"
"<html><head><title>Statistics Report for " PRODUCT_NAME "%s%s</title>\n"
"<meta http-equiv=\"content-type\" content=\"text/html; charset=iso-8859-1\">\n"
"<style type=\"text/css\"><!--\n"
"body {"
" font-family: arial, helvetica, sans-serif;"
" font-size: 12px;"
" font-weight: normal;"
" color: black;"
" background: white;"
"}\n"
"th,td {"
" font-size: 10px;"
"}\n"
"h1 {"
" font-size: x-large;"
" margin-bottom: 0.5em;"
"}\n"
"h2 {"
" font-family: helvetica, arial;"
" font-size: x-large;"
" font-weight: bold;"
" font-style: italic;"
" color: #6020a0;"
" margin-top: 0em;"
" margin-bottom: 0em;"
"}\n"
"h3 {"
" font-family: helvetica, arial;"
" font-size: 16px;"
" font-weight: bold;"
" color: #b00040;"
" background: #e8e8d0;"
" margin-top: 0em;"
" margin-bottom: 0em;"
"}\n"
"li {"
" margin-top: 0.25em;"
" margin-right: 2em;"
"}\n"
".hr {margin-top: 0.25em;"
" border-color: black;"
" border-bottom-style: solid;"
"}\n"
".titre {background: #20D0D0;color: #000000; font-weight: bold; text-align: center;}\n"
".total {background: #20D0D0;color: #ffff80;}\n"
".frontend {background: #e8e8d0;}\n"
".socket {background: #d0d0d0;}\n"
".backend {background: #e8e8d0;}\n"
".active0 {background: #ff9090;}\n"
".active1 {background: #ffd020;}\n"
".active2 {background: #ffffa0;}\n"
".active3 {background: #c0ffc0;}\n"
".active4 {background: #ffffa0;}\n" /* NOLB state shows same as going down */
".active5 {background: #a0e0a0;}\n" /* NOLB state shows darker than up */
".active6 {background: #e0e0e0;}\n"
".backup0 {background: #ff9090;}\n"
".backup1 {background: #ff80ff;}\n"
".backup2 {background: #c060ff;}\n"
".backup3 {background: #b0d0ff;}\n"
".backup4 {background: #c060ff;}\n" /* NOLB state shows same as going down */
".backup5 {background: #90b0e0;}\n" /* NOLB state shows same as going down */
".backup6 {background: #e0e0e0;}\n"
".rls {letter-spacing: 0.2em; margin-right: 1px;}\n" /* right letter spacing (used for grouping digits) */
"\n"
"table.tbl { border-collapse: collapse; border-style: none;}\n"
"table.tbl td { text-align: right; border-width: 1px 1px 1px 1px; border-style: solid solid solid solid; padding: 2px 3px; border-color: gray; white-space: nowrap;}\n"
"table.tbl td.ac { text-align: center;}\n"
"table.tbl th { border-width: 1px; border-style: solid solid solid solid; border-color: gray;}\n"
"table.tbl th.pxname { background: #b00040; color: #ffff40; font-weight: bold; border-style: solid solid none solid; padding: 2px 3px; white-space: nowrap;}\n"
"table.tbl th.empty { border-style: none; empty-cells: hide; background: white;}\n"
"table.tbl th.desc { background: white; border-style: solid solid none solid; text-align: left; padding: 2px 3px;}\n"
"\n"
"table.lgd { border-collapse: collapse; border-width: 1px; border-style: none none none solid; border-color: black;}\n"
"table.lgd td { border-width: 1px; border-style: solid solid solid solid; border-color: gray; padding: 2px;}\n"
"table.lgd td.noborder { border-style: none; padding: 2px; white-space: nowrap;}\n"
"-->\n"
"</style></head>\n",
(uri->flags&ST_SHNODE) ? " on " : "",
(uri->flags&ST_SHNODE) ? (uri->node ? uri->node : global.node) : ""
);
} else {
print_csv_header(&msg);
}
if (buffer_feed_chunk(rep, &msg) >= 0)
return 0;
s->data_state = DATA_ST_INFO;
/* fall through */
case DATA_ST_INFO:
up = (now.tv_sec - start_date.tv_sec);
/* WARNING! this has to fit the first packet too.
* We are around 3.5 kB, add adding entries will
* become tricky if we want to support 4kB buffers !
*/
if (!(s->data_ctx.stats.flags & STAT_FMT_CSV)) {
chunk_printf(&msg,
"<body><h1><a href=\"" PRODUCT_URL "\" style=\"text-decoration: none;\">"
PRODUCT_NAME "%s</a></h1>\n"
"<h2>Statistics Report for pid %d%s%s%s%s</h2>\n"
"<hr width=\"100%%\" class=\"hr\">\n"
"<h3>&gt; General process information</h3>\n"
"<table border=0><tr><td align=\"left\" nowrap width=\"1%%\">\n"
"<p><b>pid = </b> %d (process #%d, nbproc = %d)<br>\n"
"<b>uptime = </b> %dd %dh%02dm%02ds<br>\n"
"<b>system limits:</b> memmax = %s%s; ulimit-n = %d<br>\n"
"<b>maxsock = </b> %d; <b>maxconn = </b> %d; <b>maxpipes = </b> %d<br>\n"
"current conns = %d; current pipes = %d/%d<br>\n"
"Running tasks: %d/%d<br>\n"
"</td><td align=\"center\" nowrap>\n"
"<table class=\"lgd\"><tr>\n"
"<td class=\"active3\">&nbsp;</td><td class=\"noborder\">active UP </td>"
"<td class=\"backup3\">&nbsp;</td><td class=\"noborder\">backup UP </td>"
"</tr><tr>\n"
"<td class=\"active2\"></td><td class=\"noborder\">active UP, going down </td>"
"<td class=\"backup2\"></td><td class=\"noborder\">backup UP, going down </td>"
"</tr><tr>\n"
"<td class=\"active1\"></td><td class=\"noborder\">active DOWN, going up </td>"
"<td class=\"backup1\"></td><td class=\"noborder\">backup DOWN, going up </td>"
"</tr><tr>\n"
"<td class=\"active0\"></td><td class=\"noborder\">active or backup DOWN &nbsp;</td>"
"<td class=\"active6\"></td><td class=\"noborder\">not checked </td>"
"</tr></table>\n"
"Note: UP with load-balancing disabled is reported as \"NOLB\"."
"</td>"
"<td align=\"left\" valign=\"top\" nowrap width=\"1%%\">"
"<b>Display option:</b><ul style=\"margin-top: 0.25em;\">"
"",
(uri->flags&ST_HIDEVER)?"":(STATS_VERSION_STRING),
pid, (uri->flags&ST_SHNODE) ? " on " : "", (uri->flags&ST_SHNODE) ? (uri->node ? uri->node : global.node) : "",
(uri->flags&ST_SHDESC)? ": " : "", (uri->flags&ST_SHDESC) ? (uri->desc ? uri->desc : global.desc) : "",
pid, relative_pid, global.nbproc,
up / 86400, (up % 86400) / 3600,
(up % 3600) / 60, (up % 60),
global.rlimit_memmax ? ultoa(global.rlimit_memmax) : "unlimited",
global.rlimit_memmax ? " MB" : "",
global.rlimit_nofile,
global.maxsock, global.maxconn, global.maxpipes,
actconn, pipes_used, pipes_used+pipes_free,
run_queue_cur, nb_tasks_cur
);
if (s->data_ctx.stats.flags & STAT_HIDE_DOWN)
chunk_printf(&msg,
"<li><a href=\"%s%s%s\">Show all servers</a><br>\n",
uri->uri_prefix,
"",
(s->data_ctx.stats.flags & STAT_NO_REFRESH) ? ";norefresh" : "");
else
chunk_printf(&msg,
"<li><a href=\"%s%s%s\">Hide 'DOWN' servers</a><br>\n",
uri->uri_prefix,
";up",
(s->data_ctx.stats.flags & STAT_NO_REFRESH) ? ";norefresh" : "");
if (uri->refresh > 0) {
if (s->data_ctx.stats.flags & STAT_NO_REFRESH)
chunk_printf(&msg,
"<li><a href=\"%s%s%s\">Enable refresh</a><br>\n",
uri->uri_prefix,
(s->data_ctx.stats.flags & STAT_HIDE_DOWN) ? ";up" : "",
"");
else
chunk_printf(&msg,
"<li><a href=\"%s%s%s\">Disable refresh</a><br>\n",
uri->uri_prefix,
(s->data_ctx.stats.flags & STAT_HIDE_DOWN) ? ";up" : "",
";norefresh");
}
chunk_printf(&msg,
"<li><a href=\"%s%s%s\">Refresh now</a><br>\n",
uri->uri_prefix,
(s->data_ctx.stats.flags & STAT_HIDE_DOWN) ? ";up" : "",
(s->data_ctx.stats.flags & STAT_NO_REFRESH) ? ";norefresh" : "");
chunk_printf(&msg,
"<li><a href=\"%s;csv%s\">CSV export</a><br>\n",
uri->uri_prefix,
(uri->refresh > 0) ? ";norefresh" : "");
chunk_printf(&msg,
"</ul></td>"
"<td align=\"left\" valign=\"top\" nowrap width=\"1%%\">"
"<b>External ressources:</b><ul style=\"margin-top: 0.25em;\">\n"
"<li><a href=\"" PRODUCT_URL "\">Primary site</a><br>\n"
"<li><a href=\"" PRODUCT_URL_UPD "\">Updates (v" PRODUCT_BRANCH ")</a><br>\n"
"<li><a href=\"" PRODUCT_URL_DOC "\">Online manual</a><br>\n"
"</ul>"
"</td>"
"</tr></table>\n"
""
);
if (buffer_feed_chunk(rep, &msg) >= 0)
return 0;
}
s->data_ctx.stats.px = proxy;
s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
s->data_state = DATA_ST_LIST;
/* fall through */
case DATA_ST_LIST:
/* dump proxies */
while (s->data_ctx.stats.px) {
if (buffer_almost_full(rep))
return 0;
px = s->data_ctx.stats.px;
/* skip the disabled proxies and non-networked ones */
if (px->state != PR_STSTOPPED && (px->cap & (PR_CAP_FE | PR_CAP_BE)))
if (stats_dump_proxy(s, px, uri) == 0)
return 0;
s->data_ctx.stats.px = px->next;
s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
}
/* here, we just have reached the last proxy */
s->data_state = DATA_ST_END;
/* fall through */
case DATA_ST_END:
if (!(s->data_ctx.stats.flags & STAT_FMT_CSV)) {
chunk_printf(&msg, "</body></html>\n");
if (buffer_feed_chunk(rep, &msg) >= 0)
return 0;
}
s->data_state = DATA_ST_FIN;
/* fall through */
case DATA_ST_FIN:
return 1;
default:
/* unknown state ! */
s->data_state = DATA_ST_FIN;
return -1;
}
}
/*
* Dumps statistics for a proxy.
* Returns 0 if it had to stop dumping data because of lack of buffer space,
* ot non-zero if everything completed.
*/
int stats_dump_proxy(struct session *s, struct proxy *px, struct uri_auth *uri)
{
struct buffer *rep = s->rep;
struct server *sv, *svs; /* server and server-state, server-state=server or server->tracked */
struct listener *l;
struct chunk msg;
chunk_init(&msg, trash, sizeof(trash));
switch (s->data_ctx.stats.px_st) {
case DATA_ST_PX_INIT:
/* we are on a new proxy */
if (uri && uri->scope) {
/* we have a limited scope, we have to check the proxy name */
struct stat_scope *scope;
int len;
len = strlen(px->id);
scope = uri->scope;
while (scope) {
/* match exact proxy name */
if (scope->px_len == len && !memcmp(px->id, scope->px_id, len))
break;
/* match '.' which means 'self' proxy */
if (!strcmp(scope->px_id, ".") && px == s->be)
break;
scope = scope->next;
}
/* proxy name not found : don't dump anything */
if (scope == NULL)
return 1;
}
if ((s->data_ctx.stats.flags & STAT_BOUND) && (s->data_ctx.stats.iid != -1) &&
(px->uuid != s->data_ctx.stats.iid))
return 1;
s->data_ctx.stats.px_st = DATA_ST_PX_TH;
/* fall through */
case DATA_ST_PX_TH:
if (!(s->data_ctx.stats.flags & STAT_FMT_CSV)) {
/* print a new table */
chunk_printf(&msg,
"<table class=\"tbl\" width=\"100%%\">\n"
"<tr class=\"titre\">"
"<th class=\"pxname\" width=\"10%%\"><a name=\"%s\">%s</a></th>"
"<th class=\"%s\" width=\"90%%\">%s</th>"
"</tr>\n"
"</table>\n"
"<table class=\"tbl\" width=\"100%%\">\n"
"<tr class=\"titre\">"
"<th rowspan=2></th>"
"<th colspan=3>Queue</th>"
"<th colspan=3>Session rate</th><th colspan=5>Sessions</th>"
"<th colspan=2>Bytes</th><th colspan=2>Denied</th>"
"<th colspan=3>Errors</th><th colspan=2>Warnings</th>"
"<th colspan=9>Server</th>"
"</tr>\n"
"<tr class=\"titre\">"
"<th>Cur</th><th>Max</th><th>Limit</th>"
"<th>Cur</th><th>Max</th><th>Limit</th><th>Cur</th><th>Max</th>"
"<th>Limit</th><th>Total</th><th>LbTot</th><th>In</th><th>Out</th>"
"<th>Req</th><th>Resp</th><th>Req</th><th>Conn</th>"
"<th>Resp</th><th>Retr</th><th>Redis</th>"
"<th>Status</th><th>LastChk</th><th>Wght</th><th>Act</th>"
"<th>Bck</th><th>Chk</th><th>Dwn</th><th>Dwntme</th>"
"<th>Thrtle</th>\n"
"</tr>",
px->id, px->id,
px->desc ? "desc" : "empty", px->desc ? px->desc : "");
if (buffer_feed_chunk(rep, &msg) >= 0)
return 0;
}
s->data_ctx.stats.px_st = DATA_ST_PX_FE;
/* fall through */
case DATA_ST_PX_FE:
/* print the frontend */
if ((px->cap & PR_CAP_FE) &&
(!(s->data_ctx.stats.flags & STAT_BOUND) || (s->data_ctx.stats.type & (1 << STATS_TYPE_FE)))) {
if (!(s->data_ctx.stats.flags & STAT_FMT_CSV)) {
chunk_printf(&msg,
/* name, queue */
"<tr class=\"frontend\"><td class=ac>"
"<a name=\"%s/Frontend\">Frontend</a></td><td colspan=3></td>"
/* sessions rate : current, max, limit */
"<td>%s</td><td>%s</td><td>%s</td>"
/* sessions : current, max, limit, total, lbtot */
"<td>%s</td><td>%s</td><td>%s</td>"
"<td>%s</td><td></td>"
/* bytes : in, out */
"<td>%s</td><td>%s</td>"
"",
px->id,
U2H0(read_freq_ctr(&px->fe_sess_per_sec)),
U2H1(px->counters.fe_sps_max), LIM2A2(px->fe_sps_lim, "-"),
U2H3(px->feconn), U2H4(px->counters.feconn_max), U2H5(px->maxconn),
U2H6(px->counters.cum_feconn), U2H7(px->counters.bytes_in), U2H8(px->counters.bytes_out));
chunk_printf(&msg,
/* denied: req, resp */
"<td>%s</td><td>%s</td>"
/* errors : request, connect, response */
"<td>%s</td><td></td><td></td>"
/* warnings: retries, redispatches */
"<td></td><td></td>"
/* server status : reflect frontend status */
"<td class=ac>%s</td>"
/* rest of server: nothing */
"<td class=ac colspan=8></td></tr>"
"",
U2H0(px->counters.denied_req), U2H1(px->counters.denied_resp),
U2H2(px->counters.failed_req),
px->state == PR_STRUN ? "OPEN" :
px->state == PR_STIDLE ? "FULL" : "STOP");
} else {
chunk_printf(&msg,
/* pxid, name, queue cur, queue max, */
"%s,FRONTEND,,,"
/* sessions : current, max, limit, total */
"%d,%d,%d,%lld,"
/* bytes : in, out */
"%lld,%lld,"
/* denied: req, resp */
"%lld,%lld,"
/* errors : request, connect, response */
"%lld,,,"
/* warnings: retries, redispatches */
",,"
/* server status : reflect frontend status */
"%s,"
/* rest of server: nothing */
",,,,,,,,"
/* pid, iid, sid, throttle, lbtot, tracked, type */
"%d,%d,0,,,,%d,"
/* rate, rate_lim, rate_max */
"%u,%u,%u,"
/* check_status, check_code, check_duration */
",,,"
/* http response: 1xx, 2xx, 3xx, 4xx, 5xx, other */
",,,,,,"
"\n",
px->id,
px->feconn, px->counters.feconn_max, px->maxconn, px->counters.cum_feconn,
px->counters.bytes_in, px->counters.bytes_out,
px->counters.denied_req, px->counters.denied_resp,
px->counters.failed_req,
px->state == PR_STRUN ? "OPEN" :
px->state == PR_STIDLE ? "FULL" : "STOP",
relative_pid, px->uuid, STATS_TYPE_FE,
read_freq_ctr(&px->fe_sess_per_sec),
px->fe_sps_lim, px->counters.fe_sps_max);
}
if (buffer_feed_chunk(rep, &msg) >= 0)
return 0;
}
s->data_ctx.stats.l = px->listen; /* may be NULL */
s->data_ctx.stats.px_st = DATA_ST_PX_LI;
/* fall through */
case DATA_ST_PX_LI:
/* stats.l has been initialized above */
for (; s->data_ctx.stats.l != NULL; s->data_ctx.stats.l = l->next) {
if (buffer_almost_full(rep))
return 0;
l = s->data_ctx.stats.l;
if (!l->counters)
continue;
if (s->data_ctx.stats.flags & STAT_BOUND) {
if (!(s->data_ctx.stats.type & (1 << STATS_TYPE_SO)))
break;
if (s->data_ctx.stats.sid != -1 && l->luid != s->data_ctx.stats.sid)
continue;
}
if (!(s->data_ctx.stats.flags & STAT_FMT_CSV)) {
chunk_printf(&msg,
/* name, queue */
"<tr class=socket><td class=ac>%s</td><td colspan=3></td>"
/* sessions rate: current, max, limit */
"<td colspan=3>&nbsp;</td>"
/* sessions: current, max, limit, total, lbtot */
"<td>%s</td><td>%s</td><td>%s</td>"
"<td>%s</td><td>&nbsp;</td>"
/* bytes: in, out */
"<td>%s</td><td>%s</td>"
"",
l->name,
U2H3(l->nbconn), U2H4(l->counters->conn_max), U2H5(l->maxconn),
U2H6(l->counters->cum_conn), U2H7(l->counters->bytes_in), U2H8(l->counters->bytes_out));
chunk_printf(&msg,
/* denied: req, resp */
"<td>%s</td><td>%s</td>"
/* errors: request, connect, response */
"<td>%s</td><td></td><td></td>"
/* warnings: retries, redispatches */
"<td></td><td></td>"
/* server status: reflect listener status */
"<td class=ac>%s</td>"
/* rest of server: nothing */
"<td class=ac colspan=8></td></tr>"
"",
U2H0(l->counters->denied_req), U2H1(l->counters->denied_resp),
U2H2(l->counters->failed_req),
(l->nbconn < l->maxconn) ? "OPEN" : "FULL");
} else {
chunk_printf(&msg,
/* pxid, name, queue cur, queue max, */
"%s,%s,,,"
/* sessions: current, max, limit, total */
"%d,%d,%d,%lld,"
/* bytes: in, out */
"%lld,%lld,"
/* denied: req, resp */
"%lld,%lld,"
/* errors: request, connect, response */
"%lld,,,"
/* warnings: retries, redispatches */
",,"
/* server status: reflect listener status */
"%s,"
/* rest of server: nothing */
",,,,,,,,"
/* pid, iid, sid, throttle, lbtot, tracked, type */
"%d,%d,%d,,,,%d,"
/* rate, rate_lim, rate_max */
",,,"
/* check_status, check_code, check_duration */
",,,"
/* http response: 1xx, 2xx, 3xx, 4xx, 5xx, other */
",,,,,,"
"\n",
px->id, l->name,
l->nbconn, l->counters->conn_max,
l->maxconn, l->counters->cum_conn,
l->counters->bytes_in, l->counters->bytes_out,
l->counters->denied_req, l->counters->denied_resp,
l->counters->failed_req,
(l->nbconn < l->maxconn) ? "OPEN" : "FULL",
relative_pid, px->uuid, l->luid, STATS_TYPE_SO);
}
if (buffer_feed_chunk(rep, &msg) >= 0)
return 0;
}
s->data_ctx.stats.sv = px->srv; /* may be NULL */
s->data_ctx.stats.px_st = DATA_ST_PX_SV;
/* fall through */
case DATA_ST_PX_SV:
/* stats.sv has been initialized above */
for (; s->data_ctx.stats.sv != NULL; s->data_ctx.stats.sv = sv->next) {
int sv_state; /* 0=DOWN, 1=going up, 2=going down, 3=UP, 4,5=NOLB, 6=unchecked */
if (buffer_almost_full(rep))
return 0;
sv = s->data_ctx.stats.sv;
if (s->data_ctx.stats.flags & STAT_BOUND) {
if (!(s->data_ctx.stats.type & (1 << STATS_TYPE_SV)))
break;
if (s->data_ctx.stats.sid != -1 && sv->puid != s->data_ctx.stats.sid)
continue;
}
if (sv->tracked)
svs = sv->tracked;
else
svs = sv;
/* FIXME: produce some small strings for "UP/DOWN x/y &#xxxx;" */
if (!(svs->state & SRV_CHECKED))
sv_state = 6;
else if (svs->state & SRV_RUNNING) {
if (svs->health == svs->rise + svs->fall - 1)
sv_state = 3; /* UP */
else
sv_state = 2; /* going down */
if (svs->state & SRV_GOINGDOWN)
sv_state += 2;
}
else
if (svs->health)
sv_state = 1; /* going up */
else
sv_state = 0; /* DOWN */
if ((sv_state == 0) && (s->data_ctx.stats.flags & STAT_HIDE_DOWN)) {
/* do not report servers which are DOWN */
s->data_ctx.stats.sv = sv->next;
continue;
}
if (!(s->data_ctx.stats.flags & STAT_FMT_CSV)) {
static char *srv_hlt_st[7] = { "DOWN", "DN %d/%d &uarr;",
"UP %d/%d &darr;", "UP",
"NOLB %d/%d &darr;", "NOLB",
"<i>no check</i>" };
chunk_printf(&msg,
/* name */
"<tr class=\"%s%d\"><td class=ac><a name=\"%s/%s\">%s</a></td>"
/* queue : current, max, limit */
"<td>%s</td><td>%s</td><td>%s</td>"
/* sessions rate : current, max, limit */
"<td>%s</td><td>%s</td><td></td>"
/* sessions: current, max, limit */
"<td>%s</td><td>%s</td><td>%s</td>"
"<td"
"",
(sv->state & SRV_BACKUP) ? "backup" : "active",
sv_state, px->id, sv->id, sv->id,
U2H0(sv->nbpend), U2H1(sv->counters.nbpend_max), LIM2A2(sv->maxqueue, "-"),
U2H3(read_freq_ctr(&sv->sess_per_sec)), U2H4(sv->counters.sps_max),
U2H5(sv->cur_sess), U2H6(sv->counters.cur_sess_max), LIM2A7(sv->maxconn, "-"));
/* http response (via td title): 1xx, 2xx, 3xx, 4xx, 5xx, other */
if (px->mode == PR_MODE_HTTP) {
int i;
chunk_printf(&msg, " title=\"rsp codes:");
for (i = 1; i < 6; i++)
chunk_printf(&msg, " %dxx=%lld,", i, sv->counters.p.http.rsp[i]);
chunk_printf(&msg, " other=%lld\"", sv->counters.p.http.rsp[0]);
}
chunk_printf(&msg,
/* sessions: total, lbtot */
">%s</td><td>%s</td>",
U2H0(sv->counters.cum_sess), U2H1(sv->counters.cum_lbconn));
chunk_printf(&msg,
/* bytes : in, out */
"<td>%s</td><td>%s</td>"
/* denied: req, resp */
"<td></td><td>%s</td>"
/* errors : request, connect, response */
"<td></td><td>%s</td><td>%s</td>\n"
/* warnings: retries, redispatches */
"<td>%lld</td><td>%lld</td>"
"",
U2H0(sv->counters.bytes_in), U2H1(sv->counters.bytes_out),
U2H2(sv->counters.failed_secu),
U2H3(sv->counters.failed_conns), U2H4(sv->counters.failed_resp),
sv->counters.retries, sv->counters.redispatches);
/* status, lest check */
chunk_printf(&msg, "<td class=ac>");
if (sv->state & SRV_CHECKED) {
chunk_printf(&msg, "%s ",
human_time(now.tv_sec - sv->last_change, 1));
chunk_printf(&msg,
srv_hlt_st[sv_state],
(svs->state & SRV_RUNNING) ? (svs->health - svs->rise + 1) : (svs->health),
(svs->state & SRV_RUNNING) ? (svs->fall) : (svs->rise));
chunk_printf(&msg, "</td><td class=ac title=\"%s",
get_check_status_description(sv->check_status));
if (*sv->check_desc) {
struct chunk src;
chunk_printf(&msg, ": ");
chunk_initlen(&src, sv->check_desc, 0, strlen(sv->check_desc));
chunk_htmlencode(&msg, &src);
}
chunk_printf(&msg, "\"> %s%s",
tv_iszero(&sv->check_start)?"":"* ",
get_check_status_info(sv->check_status));
if (sv->check_status >= HCHK_STATUS_L57DATA)
chunk_printf(&msg, "/%d", sv->check_code);
if (sv->check_status >= HCHK_STATUS_CHECKED)
chunk_printf(&msg, " in %lums", sv->check_duration);
} else {
chunk_printf(&msg, "</td><td>");
}
chunk_printf(&msg,
/* weight */
"</td><td class=ac>%d</td>"
/* act, bck */
"<td class=ac>%s</td><td class=ac>%s</td>"
"",
(sv->eweight * px->lbprm.wmult + px->lbprm.wdiv - 1) / px->lbprm.wdiv,
(sv->state & SRV_BACKUP) ? "-" : "Y",
(sv->state & SRV_BACKUP) ? "Y" : "-");
/* check failures: unique, fatal, down time */
if (sv->state & SRV_CHECKED)
chunk_printf(&msg,
"<td>%lld</td><td>%lld</td>"
"<td>%s</td>"
"",
svs->counters.failed_checks, svs->counters.down_trans,
human_time(srv_downtime(sv), 1));
else if (sv != svs)
chunk_printf(&msg,
"<td class=ac colspan=3>via %s/%s</td>", svs->proxy->id, svs->id);
else
chunk_printf(&msg,
"<td colspan=3></td>");
/* throttle */
if ((sv->state & SRV_WARMINGUP) &&
now.tv_sec < sv->last_change + sv->slowstart &&
now.tv_sec >= sv->last_change) {
unsigned int ratio;
ratio = MAX(1, 100 * (now.tv_sec - sv->last_change) / sv->slowstart);
chunk_printf(&msg,
"<td class=ac>%d %%</td></tr>\n", ratio);
} else {
chunk_printf(&msg,
"<td class=ac>-</td></tr>\n");
}
} else {
static char *srv_hlt_st[7] = { "DOWN,", "DOWN %d/%d,",
"UP %d/%d,", "UP,",
"NOLB %d/%d,", "NOLB,",
"no check," };
chunk_printf(&msg,
/* pxid, name */
"%s,%s,"
/* queue : current, max */
"%d,%d,"
/* sessions : current, max, limit, total */
"%d,%d,%s,%lld,"
/* bytes : in, out */
"%lld,%lld,"
/* denied: req, resp */
",%lld,"
/* errors : request, connect, response */
",%lld,%lld,"
/* warnings: retries, redispatches */
"%lld,%lld,"
"",
px->id, sv->id,
sv->nbpend, sv->counters.nbpend_max,
sv->cur_sess, sv->counters.cur_sess_max, LIM2A0(sv->maxconn, ""), sv->counters.cum_sess,
sv->counters.bytes_in, sv->counters.bytes_out,
sv->counters.failed_secu,
sv->counters.failed_conns, sv->counters.failed_resp,
sv->counters.retries, sv->counters.redispatches);
/* status */
chunk_printf(&msg,
srv_hlt_st[sv_state],
(sv->state & SRV_RUNNING) ? (sv->health - sv->rise + 1) : (sv->health),
(sv->state & SRV_RUNNING) ? (sv->fall) : (sv->rise));
chunk_printf(&msg,
/* weight, active, backup */
"%d,%d,%d,"
"",
(sv->eweight * px->lbprm.wmult + px->lbprm.wdiv - 1) / px->lbprm.wdiv,
(sv->state & SRV_BACKUP) ? 0 : 1,
(sv->state & SRV_BACKUP) ? 1 : 0);
/* check failures: unique, fatal; last change, total downtime */
if (sv->state & SRV_CHECKED)
chunk_printf(&msg,
"%lld,%lld,%d,%d,",
sv->counters.failed_checks, sv->counters.down_trans,
(int)(now.tv_sec - sv->last_change), srv_downtime(sv));
else
chunk_printf(&msg,
",,,,");
/* queue limit, pid, iid, sid, */
chunk_printf(&msg,
"%s,"
"%d,%d,%d,",
LIM2A0(sv->maxqueue, ""),
relative_pid, px->uuid, sv->puid);
/* throttle */
if ((sv->state & SRV_WARMINGUP) &&
now.tv_sec < sv->last_change + sv->slowstart &&
now.tv_sec >= sv->last_change) {
unsigned int ratio;
ratio = MAX(1, 100 * (now.tv_sec - sv->last_change) / sv->slowstart);
chunk_printf(&msg, "%d", ratio);
}
/* sessions: lbtot */
chunk_printf(&msg, ",%lld,", sv->counters.cum_lbconn);
/* tracked */
if (sv->tracked)
chunk_printf(&msg, "%s/%s,",
sv->tracked->proxy->id, sv->tracked->id);
else
chunk_printf(&msg, ",");
/* type */
chunk_printf(&msg, "%d,", STATS_TYPE_SV);
/* rate */
chunk_printf(&msg, "%u,,%u,",
read_freq_ctr(&sv->sess_per_sec),
sv->counters.sps_max);
if (sv->state & SRV_CHECKED) {
/* check_status */
chunk_printf(&msg, "%s,", get_check_status_info(sv->check_status));
/* check_code */
if (sv->check_status >= HCHK_STATUS_L57DATA)
chunk_printf(&msg, "%u,", sv->check_code);
else
chunk_printf(&msg, ",");
/* check_duration */
if (sv->check_status >= HCHK_STATUS_CHECKED)
chunk_printf(&msg, "%lu,", sv->check_duration);
else
chunk_printf(&msg, ",");
} else {
chunk_printf(&msg, ",,,");
}
/* http response: 1xx, 2xx, 3xx, 4xx, 5xx, other */
if (px->mode == PR_MODE_HTTP) {
int i;
for (i=1; i<6; i++)
chunk_printf(&msg, "%lld,", sv->counters.p.http.rsp[i]);
chunk_printf(&msg, "%lld,", sv->counters.p.http.rsp[0]);
} else {
chunk_printf(&msg, ",,,,,,");
}
/* finish with EOL */
chunk_printf(&msg, "\n");
}
if (buffer_feed_chunk(rep, &msg) >= 0)
return 0;
} /* for sv */
s->data_ctx.stats.px_st = DATA_ST_PX_BE;
/* fall through */
case DATA_ST_PX_BE:
/* print the backend */
if ((px->cap & PR_CAP_BE) &&
(!(s->data_ctx.stats.flags & STAT_BOUND) || (s->data_ctx.stats.type & (1 << STATS_TYPE_BE)))) {
if (!(s->data_ctx.stats.flags & STAT_FMT_CSV)) {
chunk_printf(&msg,
/* name */
"<tr class=\"backend\"><td class=ac>"
"<a name=\"%s/Backend\">Backend</a></td>"
/* queue : current, max */
"<td>%s</td><td>%s</td><td></td>"
/* sessions rate : current, max, limit */
"<td>%s</td><td>%s</td><td></td>"
"",
px->id,
U2H0(px->nbpend) /* or px->totpend ? */, U2H1(px->counters.nbpend_max),
U2H2(read_freq_ctr(&px->be_sess_per_sec)), U2H3(px->counters.be_sps_max));
chunk_printf(&msg,
/* sessions: current, max, limit */
"<td>%s</td><td>%s</td><td>%s</td>"
"<td"
"",
U2H2(px->beconn), U2H3(px->counters.beconn_max), U2H4(px->fullconn));
/* http response (via td title): 1xx, 2xx, 3xx, 4xx, 5xx, other */
if (px->mode == PR_MODE_HTTP) {
int i;
chunk_printf(&msg, " title=\"rsp codes:");
for (i = 1; i < 6; i++)
chunk_printf(&msg, " %dxx=%lld", i, px->counters.p.http.rsp[i]);
chunk_printf(&msg, " other=%lld\"", px->counters.p.http.rsp[0]);
}
chunk_printf(&msg,
/* sessions: total, lbtot */
">%s</td><td>%s</td>"
/* bytes: in, out */
"<td>%s</td><td>%s</td>"
"",
U2H6(px->counters.cum_beconn), U2H7(px->counters.cum_lbconn),
U2H8(px->counters.bytes_in), U2H9(px->counters.bytes_out));
chunk_printf(&msg,
/* denied: req, resp */
"<td>%s</td><td>%s</td>"
/* errors : request, connect, response */
"<td></td><td>%s</td><td>%s</td>\n"
/* warnings: retries, redispatches */
"<td>%lld</td><td>%lld</td>"
/* backend status: reflect backend status (up/down): we display UP
* if the backend has known working servers or if it has no server at
* all (eg: for stats). Then we display the total weight, number of
* active and backups. */
"<td class=ac>%s %s</td><td class=ac>&nbsp;</td><td class=ac>%d</td>"
"<td class=ac>%d</td><td class=ac>%d</td>"
"",
U2H0(px->counters.denied_req), U2H1(px->counters.denied_resp),
U2H2(px->counters.failed_conns), U2H3(px->counters.failed_resp),
px->counters.retries, px->counters.redispatches,
human_time(now.tv_sec - px->last_change, 1),
(px->lbprm.tot_weight > 0 || !px->srv) ? "UP" :
"<font color=\"red\"><b>DOWN</b></font>",
(px->lbprm.tot_weight * px->lbprm.wmult + px->lbprm.wdiv - 1) / px->lbprm.wdiv,
px->srv_act, px->srv_bck);
chunk_printf(&msg,
/* rest of backend: nothing, down transitions, total downtime, throttle */
"<td class=ac>&nbsp;</td><td>%d</td>"
"<td>%s</td>"
"<td></td>"
"</tr>",
px->down_trans,
px->srv?human_time(be_downtime(px), 1):"&nbsp;");
} else {
chunk_printf(&msg,
/* pxid, name */
"%s,BACKEND,"
/* queue : current, max */
"%d,%d,"
/* sessions : current, max, limit, total */
"%d,%d,%d,%lld,"
/* bytes : in, out */
"%lld,%lld,"
/* denied: req, resp */
"%lld,%lld,"
/* errors : request, connect, response */
",%lld,%lld,"
/* warnings: retries, redispatches */
"%lld,%lld,"
/* backend status: reflect backend status (up/down): we display UP
* if the backend has known working servers or if it has no server at
* all (eg: for stats). Then we display the total weight, number of
* active and backups. */
"%s,"
"%d,%d,%d,"
/* rest of backend: nothing, down transitions, last change, total downtime */
",%d,%d,%d,,"
/* pid, iid, sid, throttle, lbtot, tracked, type */
"%d,%d,0,,%lld,,%d,"
/* rate, rate_lim, rate_max, */
"%u,,%u,"
/* check_status, check_code, check_duration */
",,,",
px->id,
px->nbpend /* or px->totpend ? */, px->counters.nbpend_max,
px->beconn, px->counters.beconn_max, px->fullconn, px->counters.cum_beconn,
px->counters.bytes_in, px->counters.bytes_out,
px->counters.denied_req, px->counters.denied_resp,
px->counters.failed_conns, px->counters.failed_resp,
px->counters.retries, px->counters.redispatches,
(px->lbprm.tot_weight > 0 || !px->srv) ? "UP" : "DOWN",
(px->lbprm.tot_weight * px->lbprm.wmult + px->lbprm.wdiv - 1) / px->lbprm.wdiv,
px->srv_act, px->srv_bck,
px->down_trans, (int)(now.tv_sec - px->last_change),
px->srv?be_downtime(px):0,
relative_pid, px->uuid,
px->counters.cum_lbconn, STATS_TYPE_BE,
read_freq_ctr(&px->be_sess_per_sec),
px->counters.be_sps_max);
/* http response: 1xx, 2xx, 3xx, 4xx, 5xx, other */
if (px->mode == PR_MODE_HTTP) {
int i;
for (i=1; i<6; i++)
chunk_printf(&msg, "%lld,", px->counters.p.http.rsp[i]);
chunk_printf(&msg, "%lld,", px->counters.p.http.rsp[0]);
} else {
chunk_printf(&msg, ",,,,,,");
}
/* finish with EOL */
chunk_printf(&msg, "\n");
}
if (buffer_feed_chunk(rep, &msg) >= 0)
return 0;
}
s->data_ctx.stats.px_st = DATA_ST_PX_END;
/* fall through */
case DATA_ST_PX_END:
if (!(s->data_ctx.stats.flags & STAT_FMT_CSV)) {
chunk_printf(&msg, "</table><p>\n");
if (buffer_feed_chunk(rep, &msg) >= 0)
return 0;
}
s->data_ctx.stats.px_st = DATA_ST_PX_FIN;
/* fall through */
case DATA_ST_PX_FIN:
return 1;
default:
/* unknown state, we should put an abort() here ! */
return 1;
}
}
/* This function is called to send output to the response buffer.
* It dumps the sessions states onto the output buffer <rep>.
* Expects to be called with client socket shut down on input.
* s->data_ctx must have been zeroed first, and the flags properly set.
* It returns 0 as long as it does not complete, non-zero upon completion.
*/
int stats_dump_sess_to_buffer(struct session *s, struct buffer *rep)
{
struct chunk msg;
if (unlikely(rep->flags & (BF_WRITE_ERROR|BF_SHUTW))) {
/* If we're forced to shut down, we might have to remove our
* reference to the last session being dumped.
*/
if (s->data_state == DATA_ST_LIST) {
if (!LIST_ISEMPTY(&s->data_ctx.sess.bref.users)) {
LIST_DEL(&s->data_ctx.sess.bref.users);
LIST_INIT(&s->data_ctx.sess.bref.users);
}
}
return 1;
}
chunk_init(&msg, trash, sizeof(trash));
switch (s->data_state) {
case DATA_ST_INIT:
/* the function had not been called yet, let's prepare the
* buffer for a response. We initialize the current session
* pointer to the first in the global list. When a target
* session is being destroyed, it is responsible for updating
* this pointer. We know we have reached the end when this
* pointer points back to the head of the sessions list.
*/
LIST_INIT(&s->data_ctx.sess.bref.users);
s->data_ctx.sess.bref.ref = sessions.n;
s->data_state = DATA_ST_LIST;
/* fall through */
case DATA_ST_LIST:
/* first, let's detach the back-ref from a possible previous session */
if (!LIST_ISEMPTY(&s->data_ctx.sess.bref.users)) {
LIST_DEL(&s->data_ctx.sess.bref.users);
LIST_INIT(&s->data_ctx.sess.bref.users);
}
/* and start from where we stopped */
while (s->data_ctx.sess.bref.ref != &sessions) {
char pn[INET6_ADDRSTRLEN + strlen(":65535")];
struct session *curr_sess;
curr_sess = LIST_ELEM(s->data_ctx.sess.bref.ref, struct session *, list);
chunk_printf(&msg,
"%p: proto=%s",
curr_sess,
curr_sess->listener->proto->name);
switch (curr_sess->listener->proto->sock_family) {
case AF_INET:
inet_ntop(AF_INET,
(const void *)&((struct sockaddr_in *)&curr_sess->cli_addr)->sin_addr,
pn, sizeof(pn));
chunk_printf(&msg,
" src=%s:%d fe=%s be=%s srv=%s",
pn,
ntohs(((struct sockaddr_in *)&curr_sess->cli_addr)->sin_port),
curr_sess->fe->id,
curr_sess->be->id,
curr_sess->srv ? curr_sess->srv->id : "<none>"
);
break;
case AF_INET6:
inet_ntop(AF_INET6,
(const void *)&((struct sockaddr_in6 *)(&curr_sess->cli_addr))->sin6_addr,
pn, sizeof(pn));
chunk_printf(&msg,
" src=%s:%d fe=%s be=%s srv=%s",
pn,
ntohs(((struct sockaddr_in6 *)&curr_sess->cli_addr)->sin6_port),
curr_sess->fe->id,
curr_sess->be->id,
curr_sess->srv ? curr_sess->srv->id : "<none>"
);
break;
case AF_UNIX:
/* no more information to print right now */
break;
}
chunk_printf(&msg,
" ts=%02x age=%s calls=%d",
curr_sess->task->state,
human_time(now.tv_sec - curr_sess->logs.tv_accept.tv_sec, 1),
curr_sess->task->calls);
chunk_printf(&msg,
" rq[f=%06xh,l=%d,an=%02xh,rx=%s",
curr_sess->req->flags,
curr_sess->req->l,
curr_sess->req->analysers,
curr_sess->req->rex ?
human_time(TICKS_TO_MS(curr_sess->req->rex - now_ms),
TICKS_TO_MS(1000)) : "");
chunk_printf(&msg,
",wx=%s",
curr_sess->req->wex ?
human_time(TICKS_TO_MS(curr_sess->req->wex - now_ms),
TICKS_TO_MS(1000)) : "");
chunk_printf(&msg,
",ax=%s]",
curr_sess->req->analyse_exp ?
human_time(TICKS_TO_MS(curr_sess->req->analyse_exp - now_ms),
TICKS_TO_MS(1000)) : "");
chunk_printf(&msg,
" rp[f=%06xh,l=%d,an=%02xh,rx=%s",
curr_sess->rep->flags,
curr_sess->rep->l,
curr_sess->rep->analysers,
curr_sess->rep->rex ?
human_time(TICKS_TO_MS(curr_sess->rep->rex - now_ms),
TICKS_TO_MS(1000)) : "");
chunk_printf(&msg,
",wx=%s",
curr_sess->rep->wex ?
human_time(TICKS_TO_MS(curr_sess->rep->wex - now_ms),
TICKS_TO_MS(1000)) : "");
chunk_printf(&msg,
",ax=%s]",
curr_sess->rep->analyse_exp ?
human_time(TICKS_TO_MS(curr_sess->rep->analyse_exp - now_ms),
TICKS_TO_MS(1000)) : "");
chunk_printf(&msg,
" s0=[%d,%1xh,fd=%d,ex=%s]",
curr_sess->si[0].state,
curr_sess->si[0].flags,
curr_sess->si[0].fd,
curr_sess->si[0].exp ?
human_time(TICKS_TO_MS(curr_sess->si[0].exp - now_ms),
TICKS_TO_MS(1000)) : "");
chunk_printf(&msg,
" s1=[%d,%1xh,fd=%d,ex=%s]",
curr_sess->si[1].state,
curr_sess->si[1].flags,
curr_sess->si[1].fd,
curr_sess->si[1].exp ?
human_time(TICKS_TO_MS(curr_sess->si[1].exp - now_ms),
TICKS_TO_MS(1000)) : "");
chunk_printf(&msg,
" exp=%s",
curr_sess->task->expire ?
human_time(TICKS_TO_MS(curr_sess->task->expire - now_ms),
TICKS_TO_MS(1000)) : "");
if (task_in_rq(curr_sess->task))
chunk_printf(&msg, " run(nice=%d)", curr_sess->task->nice);
chunk_printf(&msg, "\n");
if (buffer_feed_chunk(rep, &msg) >= 0) {
/* let's try again later from this session. We add ourselves into
* this session's users so that it can remove us upon termination.
*/
LIST_ADDQ(&curr_sess->back_refs, &s->data_ctx.sess.bref.users);
return 0;
}
s->data_ctx.sess.bref.ref = curr_sess->list.n;
}
s->data_state = DATA_ST_FIN;
/* fall through */
default:
s->data_state = DATA_ST_FIN;
return 1;
}
}
/* print a line of error buffer (limited to 70 bytes) to <out>. The format is :
* <2 spaces> <offset=5 digits> <space or plus> <space> <70 chars max> <\n>
* which is 60 chars per line. Non-printable chars \t, \n, \r and \e are
* encoded in C format. Other non-printable chars are encoded "\xHH". Original
* lines are respected within the limit of 70 output chars. Lines that are
* continuation of a previous truncated line begin with "+" instead of " "
* after the offset. The new pointer is returned.
*/
static int dump_error_line(struct chunk *out, struct error_snapshot *err,
int *line, int ptr)
{
int end;
unsigned char c;
end = out->len + 80;
if (end > out->size)
return ptr;
chunk_printf(out, " %05d%c ", ptr, (ptr == *line) ? ' ' : '+');
while (ptr < err->len && ptr < sizeof(err->buf)) {
c = err->buf[ptr];
if (isprint(c) && isascii(c) && c != '\\') {
if (out->len > end - 2)
break;
out->str[out->len++] = c;
} else if (c == '\t' || c == '\n' || c == '\r' || c == '\e' || c == '\\') {
if (out->len > end - 3)
break;
out->str[out->len++] = '\\';
switch (c) {
case '\t': c = 't'; break;
case '\n': c = 'n'; break;
case '\r': c = 'r'; break;
case '\e': c = 'e'; break;
case '\\': c = '\\'; break;
}
out->str[out->len++] = c;
} else {
if (out->len > end - 5)
break;
out->str[out->len++] = '\\';
out->str[out->len++] = 'x';
out->str[out->len++] = hextab[(c >> 4) & 0xF];
out->str[out->len++] = hextab[c & 0xF];
}
if (err->buf[ptr++] == '\n') {
/* we had a line break, let's return now */
out->str[out->len++] = '\n';
*line = ptr;
return ptr;
}
}
/* we have an incomplete line, we return it as-is */
out->str[out->len++] = '\n';
return ptr;
}
/* This function is called to send output to the response buffer.
* It dumps the errors logged in proxies onto the output buffer <rep>.
* Expects to be called with client socket shut down on input.
* s->data_ctx must have been zeroed first, and the flags properly set.
* It returns 0 as long as it does not complete, non-zero upon completion.
*/
int stats_dump_errors_to_buffer(struct session *s, struct buffer *rep)
{
extern const char *monthname[12];
struct chunk msg;
if (unlikely(rep->flags & (BF_WRITE_ERROR|BF_SHUTW)))
return 1;
chunk_init(&msg, trash, sizeof(trash));
if (!s->data_ctx.errors.px) {
/* the function had not been called yet, let's prepare the
* buffer for a response.
*/
s->data_ctx.errors.px = proxy;
s->data_ctx.errors.buf = 0;
s->data_ctx.errors.bol = 0;
s->data_ctx.errors.ptr = -1;
}
/* we have two inner loops here, one for the proxy, the other one for
* the buffer.
*/
while (s->data_ctx.errors.px) {
struct error_snapshot *es;
if (s->data_ctx.errors.buf == 0)
es = &s->data_ctx.errors.px->invalid_req;
else
es = &s->data_ctx.errors.px->invalid_rep;
if (!es->when.tv_sec)
goto next;
if (s->data_ctx.errors.iid >= 0 &&
s->data_ctx.errors.px->uuid != s->data_ctx.errors.iid &&
es->oe->uuid != s->data_ctx.errors.iid)
goto next;
if (s->data_ctx.errors.ptr < 0) {
/* just print headers now */
char pn[INET6_ADDRSTRLEN];
struct tm tm;
get_localtime(es->when.tv_sec, &tm);
chunk_printf(&msg, "\n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
if (es->src.ss_family == AF_INET)
inet_ntop(AF_INET,
(const void *)&((struct sockaddr_in *)&es->src)->sin_addr,
pn, sizeof(pn));
else
inet_ntop(AF_INET6,
(const void *)&((struct sockaddr_in6 *)(&es->src))->sin6_addr,
pn, sizeof(pn));
switch (s->data_ctx.errors.buf) {
case 0:
chunk_printf(&msg,
" frontend %s (#%d): invalid request\n"
" src %s, session #%d, backend %s (#%d), server %s (#%d)\n"
" request length %d bytes, error at position %d:\n\n",
s->data_ctx.errors.px->id, s->data_ctx.errors.px->uuid,
pn, es->sid, es->oe->id, es->oe->uuid,
es->srv ? es->srv->id : "<NONE>",
es->srv ? es->srv->puid : -1,
es->len, es->pos);
break;
case 1:
chunk_printf(&msg,
" backend %s (#%d) : invalid response\n"
" src %s, session #%d, frontend %s (#%d), server %s (#%d)\n"
" response length %d bytes, error at position %d:\n\n",
s->data_ctx.errors.px->id, s->data_ctx.errors.px->uuid,
pn, es->sid, es->oe->id, es->oe->uuid,
es->srv ? es->srv->id : "<NONE>",
es->srv ? es->srv->puid : -1,
es->len, es->pos);
break;
}
if (buffer_feed_chunk(rep, &msg) >= 0) {
/* Socket buffer full. Let's try again later from the same point */
return 0;
}
s->data_ctx.errors.ptr = 0;
s->data_ctx.errors.sid = es->sid;
}
if (s->data_ctx.errors.sid != es->sid) {
/* the snapshot changed while we were dumping it */
chunk_printf(&msg,
" WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
if (buffer_feed_chunk(rep, &msg) >= 0)
return 0;
goto next;
}
/* OK, ptr >= 0, so we have to dump the current line */
while (s->data_ctx.errors.ptr < es->len && s->data_ctx.errors.ptr < sizeof(es->buf)) {
int newptr;
int newline;
newline = s->data_ctx.errors.bol;
newptr = dump_error_line(&msg, es, &newline, s->data_ctx.errors.ptr);
if (newptr == s->data_ctx.errors.ptr)
return 0;
if (buffer_feed_chunk(rep, &msg) >= 0) {
/* Socket buffer full. Let's try again later from the same point */
return 0;
}
s->data_ctx.errors.ptr = newptr;
s->data_ctx.errors.bol = newline;
};
next:
s->data_ctx.errors.bol = 0;
s->data_ctx.errors.ptr = -1;
s->data_ctx.errors.buf++;
if (s->data_ctx.errors.buf > 1) {
s->data_ctx.errors.buf = 0;
s->data_ctx.errors.px = s->data_ctx.errors.px->next;
}
}
/* dump complete */
return 1;
}
static struct cfg_kw_list cfg_kws = {{ },{
{ CFG_GLOBAL, "stats", stats_parse_global },
{ 0, NULL, NULL },
}};
__attribute__((constructor))
static void __dumpstats_module_init(void)
{
cfg_register_keywords(&cfg_kws);
}
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/