[BUG] no metadata exported if rcpt/from rule exists via settings

[bauerstefan]

Prerequisites

X Put an X between the brackets on this line if you have done all of the following:
Read about bug reporting in general: https://rspamd.com/doc/faq.html#how-to-report-bugs-found-in-rspamd
Enabled relevant debugging logs: https://rspamd.com/doc/faq.html#how-to-debug-some-module-in-rspamd
Checked the FAQs about Core files in case of fatal crash: https://rspamd.com/doc/faq.html#how-to-figure-out-why-rspamd-process-crashed
Tried ASAN package and obtained the ASAN report (if possible): https://rspamd.com/doc/faq.html#asan-builds
Checked that your issue isn't already filed: https://github.com/issues?utf8=%E2%9C%93&q=is%3Aissue+user%3Arspamd
Checked that there is not already an experimental package or master branch

Describe the bug
metadata export to http backend does not export any data if rcpt/from rule exists.
Steps to Reproduce

1.set local.d/metadata_exporter.conf to

rules {

LOG_REMOTE1 {
backend = "http";
url = "https://remot.esite:443/log.php";
selector = "default";
formatter = "json";
}

Reading settings from remote url with
rspamd.conf.override:settings = "https://remote.site/wl_bl.txt"

and content:

V1arAD297w {
from = "@sender.tld";
rcpt = "@recipient.tld";
want_spam = yes;
}

results in no metadata is exported. Not even a call to remote site. Dropping above settings, all is fine and exported.

rspamd just logs:

2020-06-05 12:16:19 #13462(normal) ; task; rspamd_message_parse: loaded message; id: kcEE.pyzgXOsPSjaPL7DxF3Jxqw.gJupWiI71gE@mx1.sender-domain; queue-id: ; size: 5835; checksum: <3fd7074142546428ffc6d346a2e7edd7>
2020-06-05 12:16:19 #13462(normal) ; lua; settings.lua:373: kcEE.pyzgXOsPSjaPL7DxF3Jxqw.gJupWiI71gE@mx1.sender-domain apply settings according to rule V1arAD297w (rcpt,from matched)
2020-06-05 12:16:19 #13462(normal) ; task; rspamd_task_write_log: id: kcEE.pyzgXOsPSjaPL7DxF3Jxqw.gJupWiI71gE@mx1.sender-domain, qid: , ip: remote-ip, from: sender@sender.tld, (default: S (no action): [0.00/500.00] []), len: 5835, time: 18.685ms, dns req: 0, digest: <3fd7074142546428ffc6d346a2e7edd7>, rcpts: stefan@recipient.tld, mime_rcpts: stefan@recipient.tld
2020-06-05 12:20:08 #13462(normal) ; task; rspamd_message_parse: loaded message; id: kcEE.aIYWPGAyTVeRIuh2AE3hLQ.gKWP4iI71gE@mx1.sender-domain; queue-id: <1EE195DC85>; size: 5789; checksum:
2020-06-05 12:20:08 #13462(normal) ; lua; settings.lua:373: kcEE.aIYWPGAyTVeRIuh2AE3hLQ.gKWP4iI71gE@mx1.sender-domain apply settings according to rule V1arAD297w (rcpt,from matched)
2020-06-05 12:20:08 #13462(normal) ; task; rspamd_task_write_log: id: kcEE.aIYWPGAyTVeRIuh2AE3hLQ.gKWP4iI71gE@mx1.sender-domain, qid: <1EE195DC85>, ip: sender-IP, from: sender@sender.tld, (default: S (no action): [0.00/500.00] []), len: 5789, time: 12.115ms, dns req: 0, digest: , rcpts: stefan@recipient.tld, mime_rcpts: <stefan@recipient.tld

Expected behavior

Metadata should be exported.
Versions

2.6-156~buster - Debian 10 64 bit on KVM/VM.

[vstakhov]

Working as intended - when you set want_spam it means that all Rspamd processing is skipped. If that's not what you want then you can use something like symbols_enabled = [] that will turn off all checks with the exception of those that are with flag explicit_disable (and metadata exporter rule has this flag).

[vstakhov]

And yes, that should be reflected in docs to avoid this confusion (and new bug reports similar to this one).

[bauerstefan]

Thank you and sorry for the trouble!

[vstakhov]

I have updated the documentation to avoid this misunderstanding. Thank you for reporting it anyway!