request help: Custom filter performed twice?

[Cheol-Soon-Choi]

Issue description

one request, but custom filter performed twice. my flow is : request > apisix + apisix runner(include custom filter) > my Backend Service A > my Backend Service B. and Service A redirect to service B. in this case, Is it normal for custom filters to work twice? (i guess that's right...)

I want the custom filter to work once regardless of the redirect(1 request -> custom filter work once -> 1 response) What should I do ??

Thank you in advance @tzssangglass

Environment

ubuntu

• your apisix-java-plugin-runner version 0.3.0

[tzssangglass]

how did you config route? like: https://github.com/apache/apisix-java-plugin-runner/blob/d5421c292ef0d0ea93fb484afef668d7e2fc8767/tests/e2e/plugins/plugins_post_with_vars_test.go#L38-L64?

[Cheol-Soon-Choi]

my route is, { "uri": "/*", "name": "test", "methods": [ "GET" ], "plugins": { "ext-plugin-pre-req": { "conf": [ { "name": "HiFilter", "value": "{\"apiCode\":\"apiCode\",\"rejected_code\":\"403\"}" } ] } }, "upstream_id": "99", "status": 1 }

my backend, (serviceA = /test2, serviceB = /test)

my custom filter,

my error log,

Please refer to the above. thanks, @tzssangglass

[tzssangglass]

When you request APISIX once, output TWICE? twice?

[Cheol-Soon-Choi]

When you request APISIX once, output TWICE? twice?

yes.. Need more information? Redirect doesn't seem to matter.

[tzssangglass]

request > apisix + apisix runner(include custom filter) > my Backend Service A > my Backend Service B. and Service A redirect to service B.

can you provide more info about this?

[Cheol-Soon-Choi]

can you provide more info about this?

my demo project git: https://github.com/Cheol-Soon-Choi/demo_runner I think it's because of my project config or filter process?

my backend is

my route, upstream is

when i call (get) localhost:9080/test2 -> logged twice when i call (get) localhost:9080/test -> logged once

As you can see, this demo_runner project is also logged twice.

maybe @tzssangglass can reproduce twice logging like me. Thank you for your review.

[Cheol-Soon-Choi]

Since the url is /* in my router settings, the custom filter works once in the /test2 call, and the custom filter works once more in the redirected /test call, so is it logged twice in total??

[Cheol-Soon-Choi]

Solved the problem. It happened because the router was set to duplicate. I'm sorry I'm not used to it. @tzssangglass

Additionally, When I call apisix gw using resttemplate, the returned result is fine, but the custom filter doesn't seem to work. on the other way, When i call apisix gw directly, the custom filter works fine. Is there anything I missed in this process?

[tzssangglass]

Since the url is /* in my router settings, the custom filter works once in the /test2 call, and the custom filter works once more in the redirected /test call, so is it logged twice in total??

If you are saying that a redirect request occurred on the client side, then yes, APISIX processed the request twice and the java plugin runner will also process it twice.

[tzssangglass]

Additionally, When I call apisix gw using resttemplate, the returned result is fine, but the custom filter doesn't seem to work. on the other way, When i call apisix gw directly, the custom filter works fine.

It looks like the resttemplate sends a different request than the one sent by the direct call.