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MINOR: flags/mux-fcgi: Decode FCGI connection and stream flags 

The new functions fconn_show_flags() and fstrm_show_flags() decode the flags
state into a string, and are used by dev/flags:

$ /dev/flags/flags fconn 0x3100
fconn->flags = FCGI_CF_GET_VALUES | FCGI_CF_KEEP_CONN | FCGI_CF_MPXS_CONNS

./dev/flags/flags fstrm  0x3300
fstrm->flags = FCGI_SF_WANT_SHUTW | FCGI_SF_WANT_SHUTR | FCGI_SF_OUTGOING_DATA | FCGI_SF_BEGIN_SENT
This commit is contained in:
Christopher Faulet 2022-10-12 17:00:13 +02:00
parent 3965aa7494
commit c8db114afc
2 changed files with 48 additions and 1 deletions
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7
dev/flags/flags.c
View File

@ -6,6 +6,7 @@
#include <haproxy/fd-t.h>
#include <haproxy/http_ana-t.h>
#include <haproxy/htx-t.h>
#include <haproxy/mux_fcgi-t.h>
#include <haproxy/mux_h2-t.h>
#include <haproxy/mux_h1-t.h>
#include <haproxy/stconn-t.h>
@ -30,10 +31,12 @@
#define SHOW_AS_H2S 0x00004000
#define SHOW_AS_H1C 0x00008000
#define SHOW_AS_H1S 0x00010000
#define SHOW_AS_FCONN 0x00020000
#define SHOW_AS_FSTRM 0x00040000
// command line names, must be in exact same order as the SHOW_AS_* flags above
// so that show_as_words[i] matches flag 1U<<i.
const char *show_as_words[] = { "ana", "chn", "conn", "sc", "stet", "strm", "task", "txn", "sd", "hsl", "htx", "hmsg", "fd", "h2c", "h2s", "h1c", "h1s", };
const char *show_as_words[] = { "ana", "chn", "conn", "sc", "stet", "strm", "task", "txn", "sd", "hsl", "htx", "hmsg", "fd", "h2c", "h2s", "h1c", "h1s", "fconn", "fstrm"};
/* will be sufficient for even largest flag names */
static char buf[4096];
@ -144,6 +147,8 @@ int main(int argc, char **argv)
if (show_as & SHOW_AS_H2S) printf("h2s->flags = %s\n", (h2s_show_flags (buf, bsz, " | ", flags), buf));
if (show_as & SHOW_AS_H1C) printf("h1c->flags = %s\n", (h1c_show_flags (buf, bsz, " | ", flags), buf));
if (show_as & SHOW_AS_H1S) printf("h1s->flags = %s\n", (h1s_show_flags (buf, bsz, " | ", flags), buf));
if (show_as & SHOW_AS_FCONN) printf("fconn->flags = %s\n",(fconn_show_flags (buf, bsz, " | ", flags), buf));
if (show_as & SHOW_AS_FSTRM) printf("fstrm->flags = %s\n",(fstrm_show_flags (buf, bsz, " | ", flags), buf));
}
return 0;
}

42
include/haproxy/mux_fcgi-t.h
View File

@ -23,6 +23,7 @@
#define _HAPROXY_MUX_FCGI_T_H
#include <haproxy/api-t.h>
#include <haproxy/show_flags-t.h>
/**** FCGI connection flags (32 bit), in fcgi_conn->flags ****/
#define FCGI_CF_NONE 0x00000000
@ -53,6 +54,27 @@
#define FCGI_CF_KEEP_CONN 0x00001000 /* HAProxy is responsible to close the connection */
#define FCGI_CF_GET_VALUES 0x00002000 /* retrieve settings */
/* This function is used to report flags in debugging tools. Please reflect
* below any single-bit flag addition above in the same order via the
* __APPEND_FLAG macro. The new end of the buffer is returned.
*/
static forceinline char *fconn_show_flags(char *buf, size_t len, const char *delim, uint flg)
{
#define _(f, ...) __APPEND_FLAG(buf, len, delim, flg, f, #f, __VA_ARGS__)
/* prologue */
_(0);
/* flags */
_(FCGI_CF_MUX_MALLOC, _(FCGI_CF_MUX_MFULL,
_(FCGI_CF_DEM_DALLOC, _(FCGI_CF_DEM_DFULL, _(FCGI_CF_DEM_MROOM,
_(FCGI_CF_DEM_SALLOC, _(FCGI_CF_DEM_SFULL, _(FCGI_CF_DEM_TOOMANY,
_(FCGI_CF_MPXS_CONNS, _(FCGI_CF_ABRTS_SENT, _(FCGI_CF_ABRTS_FAILED,
_(FCGI_CF_WAIT_FOR_HS, _(FCGI_CF_KEEP_CONN, _(FCGI_CF_GET_VALUES))))))))))))));
/* epilogue */
_(~0U);
return buf;
#undef _
}
/**** FCGI stream flags (32 bit), in fcgi_strm->flags ****/
#define FCGI_SF_NONE 0x00000000
#define FCGI_SF_ES_RCVD 0x00000001 /* end-of-stream received (empty STDOUT or EDN_REQUEST record) */
@ -72,6 +94,26 @@
#define FCGI_SF_WANT_SHUTR 0x00001000 /* a stream couldn't shutr() (mux full/busy) */
#define FCGI_SF_WANT_SHUTW 0x00002000 /* a stream couldn't shutw() (mux full/busy) */
/* This function is used to report flags in debugging tools. Please reflect
* below any single-bit flag addition above in the same order via the
* __APPEND_FLAG macro. The new end of the buffer is returned.
*/
static forceinline char *fstrm_show_flags(char *buf, size_t len, const char *delim, uint flg)
{
#define _(f, ...) __APPEND_FLAG(buf, len, delim, flg, f, #f, __VA_ARGS__)
/* prologue */
_(0);
/* flags */
_(FCGI_SF_ES_RCVD, _(FCGI_SF_ES_SENT, _(FCGI_SF_EP_SENT, _(FCGI_SF_ABRT_SENT,
_(FCGI_SF_BLK_MBUSY, _(FCGI_SF_BLK_MROOM,
_(FCGI_SF_BEGIN_SENT, _(FCGI_SF_OUTGOING_DATA, _(FCGI_SF_NOTIFIED,
_(FCGI_SF_WANT_SHUTR, _(FCGI_SF_WANT_SHUTW)))))))))));
/* epilogue */
_(~0U);
return buf;
#undef _
}
/* FCGI connection state (fcgi_conn->state) */
enum fcgi_conn_st {
FCGI_CS_INIT = 0, /* init done, waiting for sending GET_VALUES record */