✏️ Editing: exit.lua Read Only

-- Copyright (C) Yichun Zhang (agentzh)

local ffi = require "ffi"
local base = require "resty.core.base"

local C = ffi.C
local ffi_string = ffi.string
local ngx = ngx
local error = error
local get_string_buf = base.get_string_buf
local get_size_ptr = base.get_size_ptr
local get_request = base.get_request
local co_yield = coroutine._yield
local subsystem = ngx.config.subsystem

local ngx_lua_ffi_exit

if subsystem == "http" then
    ffi.cdef[[
    int ngx_http_lua_ffi_exit(ngx_http_request_t *r, int status,
                               unsigned char *err, size_t *errlen);
    ]]

ngx_lua_ffi_exit = C.ngx_http_lua_ffi_exit

elseif subsystem == "stream" then
    ffi.cdef[[
    int ngx_stream_lua_ffi_exit(ngx_stream_lua_request_t *r, int status,
                                unsigned char *err, size_t *errlen);
    ]]

ngx_lua_ffi_exit = C.ngx_stream_lua_ffi_exit
end

local ERR_BUF_SIZE = 128
local FFI_DONE = base.FFI_DONE

ngx.exit = function (rc)
    local err = get_string_buf(ERR_BUF_SIZE)
    local errlen = get_size_ptr()
    local r = get_request()
    if r == nil then
        error("no request found")
    end
    errlen[0] = ERR_BUF_SIZE
    rc = ngx_lua_ffi_exit(r, rc, err, errlen)
    if rc == 0 then
        -- print("yielding...")
        return co_yield()
    end
    if rc == FFI_DONE then
        return
    end
    error(ffi_string(err, errlen[0]), 2)
end

return {
    version = base.version
}

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