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fix(response-ratelimiting): fix missing usage headers for upstream #13696

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fix(response-ratelimiting): fix missing usage headers for upstream #13696

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f178896
fix(response-ratelimiting): fix missing usage headers for upstream
t-yuki Sep 20, 2024
c8cb101
tests(response-ratelimiting): fix tests
t-yuki Sep 21, 2024
9d4e821
tests(response-ratelimiting): fix tests again
t-yuki Oct 15, 2024
4c3b9cd
Update changelog/unreleased/kong/fix-response-ratelimiting-upstream-h…
t-yuki Nov 19, 2024
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3 changes: 3 additions & 0 deletions changelog/unreleased/kong/fix-response-ratelimiting-upstream-headers.yml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
message: "**response-ratelimiting**: ensure rate-limiting headers are sent upstream."
type: bugfix
scope: Plugin
10 changes: 1 addition & 9 deletions kong/plugins/response-ratelimiting/access.lua
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Original file line number Diff line number Diff line change
@@ -1,6 +1,5 @@
local policies = require "kong.plugins.response-ratelimiting.policies"
local timestamp = require "kong.tools.timestamp"
local pdk_private_rl = require "kong.pdk.private.rate_limiting"


local kong = kong
Expand All @@ -10,10 +9,6 @@ local error = error
local tostring = tostring


local pdk_rl_store_response_header = pdk_private_rl.store_response_header
local pdk_rl_apply_response_headers = pdk_private_rl.apply_response_headers


local EMPTY = require("kong.tools.table").EMPTY
local HTTP_TOO_MANY_REQUESTS = 429
local RATELIMIT_REMAINING = "X-RateLimit-Remaining"
Expand Down Expand Up @@ -89,7 +84,6 @@ function _M.execute(conf)
end

-- Append usage headers to the upstream request. Also checks "block_on_first_violation".
local ngx_ctx = ngx.ctx
for k in pairs(conf.limits) do
local remaining
for _, lv in pairs(usage[k]) do
Expand All @@ -103,11 +97,9 @@ function _M.execute(conf)
end
end

pdk_rl_store_response_header(ngx_ctx, RATELIMIT_REMAINING .. "-" .. k, remaining)
kong.service.request.set_header(RATELIMIT_REMAINING .. "-" .. k, remaining)
end

pdk_rl_apply_response_headers(ngx_ctx)

kong.ctx.plugin.usage = usage -- For later use
end

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