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MINOR: proxy: create new function cli_find_frontend() to find a frontend

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Several CLI commands require a frontend, so let's have a function to
look this one up and prepare the appropriate error message and the
appctx's state in case of failure.
This commit is contained in:
Willy Tarreau 2016-11-24 12:02:29 +01:00
parent 21b069dca8
commit 960f2cb056
2 changed files with 26 additions and 0 deletions
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2
include/proto/proxy.h
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@ -25,6 +25,7 @@
#include <common/config.h>
#include <common/ticks.h>
#include <common/time.h>
#include <types/applet.h>
#include <types/global.h>
#include <types/proxy.h>
#include <types/listener.h>
@ -56,6 +57,7 @@ int proxy_cfg_ensure_no_http(struct proxy *curproxy);
void init_new_proxy(struct proxy *p);
int get_backend_server(const char *bk_name, const char *sv_name,
struct proxy **bk, struct server **sv);
struct proxy *cli_find_frontend(struct appctx *appctx, const char *arg);
/*
* This function returns a string containing the type of the proxy in a format

24
src/proxy.c
View File

@ -29,6 +29,7 @@
#include <ebistree.h>
#include <types/capture.h>
#include <types/cli.h>
#include <types/global.h>
#include <types/obj_type.h>
#include <types/peers.h>
@ -1216,6 +1217,29 @@ static struct cfg_kw_list cfg_kws = {ILH, {
{ 0, NULL, NULL },
}};
/* Expects to find a frontend named <arg> and returns it, otherwise displays various
* adequate error messages and returns NULL. This function is designed to be used by
* functions requiring a frontend on the CLI.
*/
struct proxy *cli_find_frontend(struct appctx *appctx, const char *arg)
{
struct proxy *px;
if (!*arg) {
appctx->ctx.cli.msg = "A frontend name is expected.\n";
appctx->st0 = STAT_CLI_PRINT;
return NULL;
}
px = proxy_fe_by_name(arg);
if (!px) {
appctx->ctx.cli.msg = "No such frontend.\n";
appctx->st0 = STAT_CLI_PRINT;
return NULL;
}
return px;
}
__attribute__((constructor))
static void __proxy_module_init(void)
{