Willy Tarreau 54496a6a5b MINOR: vars: make the vars() sample fetch function support a default value ... It is quite common to see in configurations constructions like the following one: http-request set-var(txn.bodylen) 0 http-request set-var(txn.bodylen) req.hdr(content-length) ... http-request set-header orig-len %[var(txn.bodylen)] The set-var() rules are almost always duplicated when manipulating integers or any other value that is mandatory along operations. This is a problem because it makes the configurations complicated to maintain and slower than needed. And it becomes even more complicated when several conditions may set the same variable because the risk of forgetting to initialize it or to accidentally reset it is high. This patch extends the var() sample fetch function to take an optional argument which contains a default value to be returned if the variable was not set. This way it becomes much simpler to use the variable, just set it where needed, and read it with a fall back to the default value: http-request set-var(txn.bodylen) req.hdr(content-length) ... http-request set-header orig-len %[var(txn.bodylen,0)] The default value is always passed as a string, thus it will experience a cast to the output type. It doesn't seem userful to complicate the configuration to pass an explicit type at this point. The vars.vtc regtest was updated accordingly.		2021-09-03 12:08:54 +02:00
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cook.vtc	REGTESTS: Add sample_fetches/cook.vtc	2020-11-13 19:46:15 +01:00
hashes.vtc	REGTESTS: mark sample_fetches/hashes.vtc as 2.4-only	2021-02-04 18:07:59 +01:00
so_name.vtc	MINOR: listener: add so_name sample fetch	2020-03-29 05:47:29 +02:00
srv_name.vtc
ubase64.vtc	REGTESTS: disable inter-thread idle connection sharing on sensitive tests	2021-05-09 14:41:41 +02:00
vars.vtc	MINOR: vars: make the vars() sample fetch function support a default value	2021-09-03 12:08:54 +02:00