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MINOR: config: Add failifnotcap() to emit an alert on proxy capabilities

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This function must be used to emit an alert if a proxy does not have at
least one of the requested capabilities. An additional message may be
appended to the alert.
This commit is contained in:
Christopher Faulet 2021-01-13 12:10:00 +01:00
parent 4e36682d51
commit d4a83dd6b3
1 changed files with 25 additions and 0 deletions
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25
include/haproxy/cfgparse.h
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@ -141,6 +141,31 @@ static inline int warnifnotcap(struct proxy *proxy, int cap, const char *file, i
return 0;
}
/*
* Sends an alert if proxy <proxy> does not have at least one of the
* capabilities in <cap>. An optional <hint> may be added at the end
* of the alert to help the user. Returns 1 if an alert was emitted
* or 0 if the condition is valid.
*/
static inline int failifnotcap(struct proxy *proxy, int cap, const char *file, int line, const char *arg, const char *hint)
{
char *msg;
switch (cap) {
case PR_CAP_BE: msg = "no backend"; break;
case PR_CAP_FE: msg = "no frontend"; break;
case PR_CAP_BE|PR_CAP_FE: msg = "neither frontend nor backend"; break;
default: msg = "not enough"; break;
}
if (!(proxy->cap & cap)) {
ha_alert("parsing [%s:%d] : '%s' not allowed because %s '%s' has %s capability.%s\n",
file, line, arg, proxy_type_str(proxy), proxy->id, msg, hint ? hint : "");
return 1;
}
return 0;
}
/* simplified way to define a section parser */
#define REGISTER_CONFIG_SECTION(name, parse, post) \
INITCALL3(STG_REGISTER, cfg_register_section, (name), (parse), (post))