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haproxy/src/dumpstats.c
Willy Tarreau 2069704492 [MEDIUM] differentiate between generic LB params and map-specific ones 
Since the introduction of server weights, all load balancing algorithms
relied on a pre-computed map. Incidently, quite a bunch of map-specific
parameters were used at random places in order to get the number of
servers or their total weight. It was not architecturally acceptable
that optimizations for the map computation had impact on external parts.
For instance, during this cleanup it was found that a backend weight was
seen as 1 when only the first backup server is used, whatever its weight.

This cleanup consists in differentiating between LB-generic parameters,
such as total weights, number of servers, etc... and map-specific ones.
The struct proxy has been enhanced in order to make it easier to later
support other algorithms. The recount_servers() function now also
updates generic values such as total weights so that it's not needed
anymore to call recalc_server_map() when weights are needed. This
permitted to simplify some code which does not need to know about map
internals anymore.
2007-11-28 14:23:10 +01:00

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/*
* Functions dedicated to statistics output
*
* Copyright 2000-2007 Willy Tarreau <w@1wt.eu>
*
* 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/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/time.h>
#include <common/uri_auth.h>
#include <common/version.h>
#include <types/client.h>
#include <types/global.h>
#include <types/polling.h>
#include <types/proxy.h>
#include <types/server.h>
#include <proto/backend.h>
#include <proto/buffers.h>
#include <proto/dumpstats.h>
#include <proto/fd.h>
#include <proto/proto_uxst.h>
#include <proto/senddata.h>
#include <proto/session.h>
#include <proto/server.h>
/* 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".
*/
int stats_parse_global(const char **args, char *err, int errlen)
{
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
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_uxst_stats;
global.stats_sock.private = NULL;
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 {
snprintf(err, errlen, "'stats socket' only supports 'user', 'uid', 'group', 'gid', and 'mode'");
return -1;
}
}
uxst_add_listener(&global.stats_sock);
global.maxsock++;
}
else if (!strcmp(args[0], "timeout")) {
int timeout = atol(args[1]);
if (timeout <= 0) {
snprintf(err, errlen, "a positive value is expected for 'stats timeout' in 'global section'");
return -1;
}
__tv_from_ms(&global.stats_timeout, 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;
}
/*
* Produces statistics data for the session <s>. Expects to be called with
* s->cli_state == CL_STSHUTR. It *may* make use of informations from <uri>
* and <flags>.
* 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_raw(struct session *s, struct uri_auth *uri, int flags)
{
struct buffer *rep = s->rep;
struct proxy *px;
struct chunk msg;
msg.len = 0;
msg.str = trash;
switch (s->data_state) {
case DATA_ST_INIT:
/* the function had not been called yet, let's prepare the
* buffer for a response.
*/
client_retnclose(s, &msg);
s->data_state = DATA_ST_HEAD;
/* fall through */
case DATA_ST_HEAD:
chunk_printf(&msg, sizeof(trash),
"# 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,"
"\n");
if (buffer_write_chunk(rep, &msg) != 0)
return 0;
s->data_state = DATA_ST_INFO;
/* fall through */
case DATA_ST_INFO:
memset(&s->data_ctx, 0, sizeof(s->data_ctx));
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) {
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) == 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;
return 1;
case DATA_ST_FIN:
return 1;
default:
/* unknown state ! */
return -1;
}
}
/*
* Produces statistics data for the session <s>. Expects to be called with
* s->cli_state == CL_STSHUTR. It stops by itself by unsetting the SN_SELF_GEN
* flag from the session, 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.
* 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 uri_auth *uri, int flags)
{
struct buffer *rep = s->rep;
struct proxy *px;
struct chunk msg;
unsigned int up;
msg.len = 0;
msg.str = trash;
switch (s->data_state) {
case DATA_ST_INIT:
/* the function had not been called yet */
s->flags |= SN_SELF_GEN; // more data will follow
chunk_printf(&msg, sizeof(trash),
"HTTP/1.0 200 OK\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: %s\r\n",
(flags & STAT_FMT_HTML) ? "text/html" : "text/plain");
if (uri->refresh > 0 && !(s->flags & SN_STAT_NORFRSH))
chunk_printf(&msg, sizeof(trash), "Refresh: %d\r\n",
uri->refresh);
chunk_printf(&msg, sizeof(trash), "\r\n");
s->txn.status = 200;
client_retnclose(s, &msg); // send the start of the response.
msg.len = 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;
s->flags &= ~SN_SELF_GEN;
return 1;
}
s->data_state = DATA_ST_HEAD; /* let's start producing data */
/* fall through */
case DATA_ST_HEAD:
if (flags & STAT_FMT_HTML) {
/* WARNING! This must fit in the first buffer !!! */
chunk_printf(&msg, sizeof(trash),
"<html><head><title>Statistics Report for " PRODUCT_NAME "</title>\n"
"<meta http-equiv=\"content-type\" content=\"text/html; charset=iso-8859-1\">\n"
"<style type=\"text/css\"><!--\n"
"body {"
" font-family: helvetica, arial;"
" font-size: 12px;"
" font-weight: normal;"
" color: black;"
" background: white;"
"}\n"
"th,td {"
" font-size: 0.8em;"
" align: center;"
"}\n"
"h1 {"
" font-size: xx-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"
".pxname {background: #b00040;color: #ffff40;font-weight: bold;}\n"
".titre {background: #20D0D0;color: #000000;font-weight: bold;}\n"
".total {background: #20D0D0;color: #ffff80;}\n"
".frontend {background: #e8e8d0;}\n"
".backend {background: #e8e8d0;}\n"
".active0 {background: #ff9090;}\n"
".active1 {background: #ffd020;}\n"
".active2 {background: #ffffa0;}\n"
".active3 {background: #c0ffc0;}\n"
".active4 {background: #e0e0e0;}\n"
".backup0 {background: #ff9090;}\n"
".backup1 {background: #ff80ff;}\n"
".backup2 {background: #c060ff;}\n"
".backup3 {background: #b0d0ff;}\n"
".backup4 {background: #e0e0e0;}\n"
"table.tbl { border-collapse: collapse; border-style: none;}\n"
"table.tbl td { border-width: 1px 1px 1px 1px; border-style: solid solid solid solid; padding: 2px 3px; border-color: gray;}\n"
"table.tbl th { border-width: 1px; border-style: solid solid solid solid; border-color: gray;}\n"
"table.tbl th.empty { border-style: none; empty-cells: hide;}\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");
} else {
chunk_printf(&msg, sizeof(trash),
"# 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,"
"\n");
}
if (buffer_write_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 (flags & STAT_FMT_HTML) {
chunk_printf(&msg, sizeof(trash),
"<body><h1><a href=\"" PRODUCT_URL "\" style=\"text-decoration: none;\">"
PRODUCT_NAME "%s</a></h1>\n"
"<h2>Statistics Report for pid %d</h2>\n"
"<hr width=\"100%%\" class=\"hr\">\n"
"<h3>&gt; General process information</h3>\n"
"<table border=0 cols=4><tr><td align=\"left\" nowrap width=\"1%%\">\n"
"<p><b>pid = </b> %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<br>\n"
"<b>maxconn = </b> %d (current conns = %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=\"active4\"></td><td class=\"noborder\">not checked </td>"
"</tr></table>\n"
"</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, 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,
actconn
);
if (s->flags & SN_STAT_HIDEDWN)
chunk_printf(&msg, sizeof(trash),
"<li><a href=\"%s%s%s\">Show all servers</a><br>\n",
uri->uri_prefix,
"",
(s->flags & SN_STAT_NORFRSH) ? ";norefresh" : "");
else
chunk_printf(&msg, sizeof(trash),
"<li><a href=\"%s%s%s\">Hide 'DOWN' servers</a><br>\n",
uri->uri_prefix,
";up",
(s->flags & SN_STAT_NORFRSH) ? ";norefresh" : "");
if (uri->refresh > 0) {
if (s->flags & SN_STAT_NORFRSH)
chunk_printf(&msg, sizeof(trash),
"<li><a href=\"%s%s%s\">Enable refresh</a><br>\n",
uri->uri_prefix,
(s->flags & SN_STAT_HIDEDWN) ? ";up" : "",
"");
else
chunk_printf(&msg, sizeof(trash),
"<li><a href=\"%s%s%s\">Disable refresh</a><br>\n",
uri->uri_prefix,
(s->flags & SN_STAT_HIDEDWN) ? ";up" : "",
";norefresh");
}
chunk_printf(&msg, sizeof(trash),
"<li><a href=\"%s%s%s\">Refresh now</a><br>\n",
uri->uri_prefix,
(s->flags & SN_STAT_HIDEDWN) ? ";up" : "",
(s->flags & SN_STAT_NORFRSH) ? ";norefresh" : "");
chunk_printf(&msg, sizeof(trash),
"<li><a href=\"%s;csv%s\">CSV export</a><br>\n",
uri->uri_prefix,
(uri->refresh > 0) ? ";norefresh" : "");
chunk_printf(&msg, sizeof(trash),
"</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_write_chunk(rep, &msg) != 0)
return 0;
}
memset(&s->data_ctx, 0, sizeof(s->data_ctx));
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) {
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, flags) == 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 (flags & STAT_FMT_HTML) {
chunk_printf(&msg, sizeof(trash), "</body></html>\n");
if (buffer_write_chunk(rep, &msg) != 0)
return 0;
}
s->data_state = DATA_ST_FIN;
/* fall through */
case DATA_ST_FIN:
s->flags &= ~SN_SELF_GEN;
return 1;
default:
/* unknown state ! */
s->flags &= ~SN_SELF_GEN;
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, int flags)
{
struct buffer *rep = s->rep;
struct server *sv;
struct chunk msg;
msg.len = 0;
msg.str = 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;
}
s->data_ctx.stats.px_st = DATA_ST_PX_TH;
/* fall through */
case DATA_ST_PX_TH:
if (flags & STAT_FMT_HTML) {
/* print a new table */
chunk_printf(&msg, sizeof(trash),
"<table cols=\"24\" class=\"tbl\" width=\"100%%\">\n"
"<tr align=\"center\" class=\"titre\">"
"<th colspan=2 class=\"pxname\">%s</th>"
"<th colspan=21 class=\"empty\"></th>"
"</tr>\n"
"<tr align=\"center\" class=\"titre\">"
"<th rowspan=2></th>"
"<th colspan=3>Queue</th><th colspan=4>Sessions</th>"
"<th colspan=2>Bytes</th><th colspan=2>Denied</th>"
"<th colspan=3>Errors</th><th colspan=2>Warnings</th>"
"<th colspan=7>Server</th>"
"</tr>\n"
"<tr align=\"center\" class=\"titre\">"
"<th>Cur</th><th>Max</th><th>Limit</th><th>Cur</th><th>Max</th>"
"<th>Limit</th><th>Cumul</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>Wght</th><th>Act</th>"
"<th>Bck</th><th>Chk</th><th>Dwn</th><th>Dwntme</th>\n"
"</tr>",
px->id);
if (buffer_write_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) {
if (flags & STAT_FMT_HTML) {
chunk_printf(&msg, sizeof(trash),
/* name, queue */
"<tr align=center class=\"frontend\"><td>Frontend</td><td colspan=3></td>"
/* sessions : current, max, limit, cumul */
"<td align=right>%d</td><td align=right>%d</td>"
"<td align=right>%d</td><td align=right>%d</td>"
/* bytes : in, out */
"<td align=right>%lld</td><td align=right>%lld</td>"
/* denied: req, resp */
"<td align=right>%d</td><td align=right>%d</td>"
/* errors : request, connect, response */
"<td align=right>%d</td><td align=right></td><td align=right></td>"
/* warnings: retries, redispatches */
"<td align=right></td><td align=right></td>"
/* server status : reflect frontend status */
"<td align=center>%s</td>"
/* rest of server: nothing */
"<td align=center colspan=6></td></tr>"
"",
px->feconn, px->feconn_max, px->maxconn, px->cum_feconn,
px->bytes_in, px->bytes_out,
px->denied_req, px->denied_resp,
px->failed_req,
px->state == PR_STRUN ? "OPEN" :
px->state == PR_STIDLE ? "FULL" : "STOP");
} else {
chunk_printf(&msg, sizeof(trash),
/* pxid, name, queue cur, queue max, */
"%s,FRONTEND,,,"
/* sessions : current, max, limit, cumul */
"%d,%d,%d,%d,"
/* bytes : in, out */
"%lld,%lld,"
/* denied: req, resp */
"%d,%d,"
/* errors : request, connect, response */
"%d,,,"
/* warnings: retries, redispatches */
",,"
/* server status : reflect frontend status */
"%s,"
/* rest of server: nothing */
",,,,,,,,"
/* pid, iid, sid, */
"%d,%d,0,"
"\n",
px->id,
px->feconn, px->feconn_max, px->maxconn, px->cum_feconn,
px->bytes_in, px->bytes_out,
px->denied_req, px->denied_resp,
px->failed_req,
px->state == PR_STRUN ? "OPEN" :
px->state == PR_STIDLE ? "FULL" : "STOP",
relative_pid, px->uuid);
}
if (buffer_write_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 */
while (s->data_ctx.stats.sv != NULL) {
int sv_state; /* 0=DOWN, 1=going up, 2=going down, 3=UP, 4=unchecked */
sv = s->data_ctx.stats.sv;
/* FIXME: produce some small strings for "UP/DOWN x/y &#xxxx;" */
if (!(sv->state & SRV_CHECKED))
sv_state = 4;
else if (sv->state & SRV_RUNNING)
if (sv->health == sv->rise + sv->fall - 1)
sv_state = 3; /* UP */
else
sv_state = 2; /* going down */
else
if (sv->health)
sv_state = 1; /* going up */
else
sv_state = 0; /* DOWN */
if ((sv_state == 0) && (s->flags & SN_STAT_HIDEDWN)) {
/* do not report servers which are DOWN */
s->data_ctx.stats.sv = sv->next;
continue;
}
if (flags & STAT_FMT_HTML) {
static char *srv_hlt_st[5] = { "DOWN", "DN %d/%d &uarr;", "UP %d/%d &darr;",
"UP", "<i>no check</i>" };
chunk_printf(&msg, sizeof(trash),
/* name */
"<tr align=\"center\" class=\"%s%d\"><td>%s</td>"
/* queue : current, max, limit */
"<td align=right>%d</td><td align=right>%d</td><td align=right>%s</td>"
/* sessions : current, max, limit, cumul */
"<td align=right>%d</td><td align=right>%d</td>"
"<td align=right>%s</td><td align=right>%d</td>"
/* bytes : in, out */
"<td align=right>%lld</td><td align=right>%lld</td>"
/* denied: req, resp */
"<td align=right></td><td align=right>%d</td>"
/* errors : request, connect, response */
"<td align=right></td><td align=right>%d</td><td align=right>%d</td>\n"
/* warnings: retries, redispatches */
"<td align=right>%d</td><td align=right></td>"
"",
(sv->state & SRV_BACKUP) ? "backup" : "active",
sv_state, sv->id,
sv->nbpend, sv->nbpend_max, LIM2A0(sv->maxqueue, "-"),
sv->cur_sess, sv->cur_sess_max, LIM2A1(sv->maxconn, "-"), sv->cum_sess,
sv->bytes_in, sv->bytes_out,
sv->failed_secu,
sv->failed_conns, sv->failed_resp,
sv->retries);
/* status */
chunk_printf(&msg, sizeof(trash), "<td nowrap>");
if (sv->state & SRV_CHECKED)
chunk_printf(&msg, sizeof(trash), "%s ",
human_time(now.tv_sec - sv->last_change, 1));
chunk_printf(&msg, sizeof(trash),
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, sizeof(trash),
/* weight */
"</td><td>%d</td>"
/* act, bck */
"<td>%s</td><td>%s</td>"
"",
sv->uweight,
(sv->state & SRV_BACKUP) ? "-" : "Y",
(sv->state & SRV_BACKUP) ? "Y" : "-");
/* check failures: unique, fatal, down time */
if (sv->state & SRV_CHECKED)
chunk_printf(&msg, sizeof(trash),
"<td align=right>%d</td><td align=right>%d</td>"
"<td nowrap align=right>%s</td>"
"</tr>\n",
sv->failed_checks, sv->down_trans,
human_time(srv_downtime(sv), 1));
else
chunk_printf(&msg, sizeof(trash),
"<td colspan=3></td></tr>\n");
} else {
static char *srv_hlt_st[5] = { "DOWN,", "DOWN %d/%d,", "UP %d/%d,",
"UP,", "no check," };
chunk_printf(&msg, sizeof(trash),
/* pxid, name */
"%s,%s,"
/* queue : current, max */
"%d,%d,"
/* sessions : current, max, limit, cumul */
"%d,%d,%s,%d,"
/* bytes : in, out */
"%lld,%lld,"
/* denied: req, resp */
",%d,"
/* errors : request, connect, response */
",%d,%d,"
/* warnings: retries, redispatches */
"%d,,"
"",
px->id, sv->id,
sv->nbpend, sv->nbpend_max,
sv->cur_sess, sv->cur_sess_max, LIM2A0(sv->maxconn, ""), sv->cum_sess,
sv->bytes_in, sv->bytes_out,
sv->failed_secu,
sv->failed_conns, sv->failed_resp,
sv->retries);
/* status */
chunk_printf(&msg, sizeof(trash),
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, sizeof(trash),
/* weight, active, backup */
"%d,%d,%d,"
"",
sv->uweight,
(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, sizeof(trash),
"%d,%d,%d,%d,",
sv->failed_checks, sv->down_trans,
now.tv_sec - sv->last_change, srv_downtime(sv));
else
chunk_printf(&msg, sizeof(trash),
",,,,");
/* queue limit, pid, iid, sid and EOL */
chunk_printf(&msg, sizeof(trash),
"%s,"
"%d,%d,%d,"
"\n",
LIM2A0(sv->maxqueue, ""),
relative_pid, px->uuid, sv->puid);
}
if (buffer_write_chunk(rep, &msg) != 0)
return 0;
s->data_ctx.stats.sv = sv->next;
} /* while 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) {
if (flags & STAT_FMT_HTML) {
chunk_printf(&msg, sizeof(trash),
/* name */
"<tr align=center class=\"backend\"><td>Backend</td>"
/* queue : current, max */
"<td align=right>%d</td><td align=right>%d</td><td></td>"
/* sessions : current, max, limit, cumul. */
"<td align=right>%d</td><td align=right>%d</td><td align=right>%d</td><td align=right>%d</td>"
/* bytes : in, out */
"<td align=right>%lld</td><td align=right>%lld</td>"
/* denied: req, resp */
"<td align=right>%d</td><td align=right>%d</td>"
/* errors : request, connect, response */
"<td align=right></td><td align=right>%d</td><td align=right>%d</td>\n"
/* warnings: retries, redispatches */
"<td align=right>%d</td><td align=right>%d</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 align=center nowrap>%s %s</td><td align=center>%d</td>"
"<td align=center>%d</td><td align=center>%d</td>",
px->nbpend /* or px->totpend ? */, px->nbpend_max,
px->beconn, px->beconn_max, px->fullconn, px->cum_beconn,
px->bytes_in, px->bytes_out,
px->denied_req, px->denied_resp,
px->failed_conns, px->failed_resp,
px->retries, px->redispatches,
human_time(now.tv_sec - px->last_change, 1),
(px->lbprm.tot_weight > 0 || !px->srv) ? "UP" : "DOWN",
px->lbprm.tot_weight * px->lbprm.wmult,
px->srv_act, px->srv_bck);
chunk_printf(&msg, sizeof(trash),
/* rest of backend: nothing, down transformations, total downtime */
"<td align=center>&nbsp;</td><td align=\"right\">%d</td>"
"<td align=\"right\" nowrap>%s</td>"
"</tr>",
px->down_trans,
px->srv?human_time(be_downtime(px), 1):"&nbsp;");
} else {
chunk_printf(&msg, sizeof(trash),
/* pxid, name */
"%s,BACKEND,"
/* queue : current, max */
"%d,%d,"
/* sessions : current, max, limit, cumul */
"%d,%d,%d,%d,"
/* bytes : in, out */
"%lld,%lld,"
/* denied: req, resp */
"%d,%d,"
/* errors : request, connect, response */
",%d,%d,"
/* warnings: retries, redispatches */
"%d,%d,"
/* 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 transformations,
* last change, total downtime. */
",%d,%d,%d,,"
/* pid, iid, sid, */
"%d,%d,0,"
"\n",
px->id,
px->nbpend /* or px->totpend ? */, px->nbpend_max,
px->beconn, px->beconn_max, px->fullconn, px->cum_beconn,
px->bytes_in, px->bytes_out,
px->denied_req, px->denied_resp,
px->failed_conns, px->failed_resp,
px->retries, px->redispatches,
(px->lbprm.tot_weight > 0 || !px->srv) ? "UP" : "DOWN",
px->lbprm.tot_weight * px->lbprm.wmult,
px->srv_act, px->srv_bck,
px->down_trans, now.tv_sec - px->last_change,
px->srv?be_downtime(px):0,
relative_pid, px->uuid);
}
if (buffer_write_chunk(rep, &msg) != 0)
return 0;
}
s->data_ctx.stats.px_st = DATA_ST_PX_END;
/* fall through */
case DATA_ST_PX_END:
if (flags & STAT_FMT_HTML) {
chunk_printf(&msg, sizeof(trash), "</table><p>\n");
if (buffer_write_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;
}
}
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/
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