fix: etcd sync data checker should work

[ronething]

Signed-off-by: ashing axingfly@gmail.com

Description

Fixes #11216

fix part 2 of this issue

Background

the load_full_data function in the file config_etcd.lua(load all exist data from etcd when apisix start), checker does not depend on item_schema to have a value

apisix/apisix/core/config_etcd.lua

Lines 540 to 546 in 507df12

	if data_valid and self.checker then
	data_valid, err = self.checker(item.value)
	if not data_valid then
	log.error("failed to check item data of [", self.key,
	"] err:", err, " ,val: ", json.delay_encode(item.value))
	end
	end

But in the sync_data function (watch new events from etcd when apisix running), checker relies on item_schema should have value.

apisix/apisix/core/config_etcd.lua

Line 668 in 507df12

if data_valid and res.value and self.item_schema then

As a result, the plugin metadata resource cannot reach the checker logic when etcd watch.

apisix/apisix/plugin.lua

Lines 816 to 821 in 507df12

	local plugin_metadatas, err = core.config.new("/plugin_metadata",
	{
	automatic = true,
	checker = check_plugin_metadata
	}
	)

So we need to fix it.

about the test case:

The admin api is not used for the operation, because the admin api will directly fail to verify the schema and cannot go to the etcd checker logic.

error-log-logger-clickhouse.t: The request header sent to clickhouse should be decrypted to be correct.
There was a problem with the previous modification of this PR
https://github.com/apache/apisix/pull/11076/files#diff-2974594095136be865db5d415f3da92d2a435211e30f93f693f1ed46a4a90037

PS: This PR is a partial fork of #11430.

about failed CI

My PR changes have nothing to do with this CI error. The reason for the error is a problem with the image version used by the github runner.

ref: https://github.com/apache/apisix/actions/runs/10193727573/job/28202213850?pr=11457

• The correct github runner image version is as follows,

ref: https://github.com/apache/apisix/actions/runs/10193727573/job/28202215238?pr=11457

Checklist

• I have explained the need for this PR and the problem it solves
• I have explained the changes or the new features added to this PR
• I have added tests corresponding to this change
• I have updated the documentation to reflect this change
• I have verified that this change is backward compatible (If not, please discuss on the APISIX mailing list first)

[shreemaan-abhishek]

I am confused about one thing, in this line:

apisix/apisix/core/config_etcd.lua

Line 532 in 507df12

if data_valid and self.item_schema then

load_full_data validates the item_schema is not falsy.

Then why do you say this:

checker does not depend on item_schema to have a value

[ronething]

checker does not depend on item_schema to have a value

@shreemaan-abhishek What I mean is that the execution of the checker function does not depend on the item_schema having a value.

ref:

apisix/apisix/core/config_etcd.lua

Lines 540 to 541 in 507df12

	if data_valid and self.checker then
	data_valid, err = self.checker(item.value)

[moonming]

@ronething I rerun test cases and passed.

[shreemaan-abhishek]

LGTM

[ronething]

@moonming can you merge it, thanks.