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fix: generalize the http status code returned to nginx when required #86

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fix: generalize the http status code returned to nginx when required #86

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08c3ad3
fix: generalize the http status code returned to nginx when required
Feb 3, 2026
705524b
fix: set application/json for response bodies
Feb 4, 2026
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22 changes: 21 additions & 1 deletion src/lua/api-gateway/validation/validator.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -255,6 +255,25 @@ function BaseValidator:executeTtl(key)
end
end

-- converts a response status to a valid HTTP status code
function BaseValidator:convertToValidHttpStatusCode(response_status)
response_status = tonumber(response_status)
if response_status == nil then
return 500
end
if (response_status >= 100 and response_status <= 599) then
return response_status
end

local http_code_str = string.sub(tostring(response_status), 1, 3)
local http_code_number = tonumber(http_code_str)
if http_code_number ~= nil and http_code_number >= 100 and http_code_number <= 599 then
return http_code_number
end

ngx.log(ngx.DEBUG, "Status code: ", tostring(response_status), " is not in a valid HTTP Status Code format")
return 500
end

-- generic exit function for a validator --
function BaseValidator:exitFn(status, resp_body)
Expand All @@ -269,9 +288,10 @@ function BaseValidator:exitFn(status, resp_body)
end
end

ngx.status = status
ngx.status = self:convertToValidHttpStatusCode(status)

if (ngx.null ~= resp_body) then
ngx.header["Content-Type"] = "application/json"
ngx.say(resp_body)
end

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