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clean up nginx cache specific code

This commit is contained in:
Karol Wypchlo 2022-02-23 17:40:57 +01:00
parent 485a8e9b45
commit 9241979ca5
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GPG Key ID: B515DE9EEBE241E1
1 changed files with 47 additions and 41 deletions
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86
docker/nginx/conf.d/include/location-skylink
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@ -25,41 +25,44 @@ set $skynet_proof '';
set $limit_rate 0;
access_by_lua_block {
local httpc = require("resty.http").new()
-- the block below only makes sense if we are using nginx cache
if not ngx.var.skyd_disk_cache_enabled then
local httpc = require("resty.http").new()
-- detect whether requested skylink is v2
local isBase32v2 = string.len(ngx.var.skylink) == 55 and string.sub(ngx.var.skylink, 0, 2) == "04"
local isBase64v2 = string.len(ngx.var.skylink) == 46 and string.sub(ngx.var.skylink, 0, 2) == "AQ"
-- detect whether requested skylink is v2
local isBase32v2 = string.len(ngx.var.skylink) == 55 and string.sub(ngx.var.skylink, 0, 2) == "04"
local isBase64v2 = string.len(ngx.var.skylink) == 46 and string.sub(ngx.var.skylink, 0, 2) == "AQ"
if isBase32v2 or isBase64v2 then
-- 10.10.10.10 points to sia service (alias not available when using resty-http)
local res, err = httpc:request_uri("http://10.10.10.10:9980/skynet/resolve/" .. ngx.var.skylink_v2, {
headers = { ["User-Agent"] = "Sia-Agent" }
})
if isBase32v2 or isBase64v2 then
-- 10.10.10.10 points to sia service (alias not available when using resty-http)
local res, err = httpc:request_uri("http://10.10.10.10:9980/skynet/resolve/" .. ngx.var.skylink_v2, {
headers = { ["User-Agent"] = "Sia-Agent" }
})
-- print error and exit with 500 or exit with response if status is not 200
if err or (res and res.status ~= ngx.HTTP_OK) then
ngx.status = (err and ngx.HTTP_INTERNAL_SERVER_ERROR) or res.status
ngx.header["content-type"] = "text/plain"
ngx.say(err or res.body)
return ngx.exit(ngx.status)
-- print error and exit with 500 or exit with response if status is not 200
if err or (res and res.status ~= ngx.HTTP_OK) then
ngx.status = (err and ngx.HTTP_INTERNAL_SERVER_ERROR) or res.status
ngx.header["content-type"] = "text/plain"
ngx.say(err or res.body)
return ngx.exit(ngx.status)
end
local json = require('cjson')
local resolve = json.decode(res.body)
ngx.var.skylink_v1 = resolve.skylink
ngx.var.skynet_proof = res.headers["Skynet-Proof"]
end
local json = require('cjson')
local resolve = json.decode(res.body)
ngx.var.skylink_v1 = resolve.skylink
ngx.var.skynet_proof = res.headers["Skynet-Proof"]
end
-- check if skylink v1 is present on blocklist (compare hashes)
if require("skynet.blocklist").is_blocked(ngx.var.skylink_v1) then
return require("skynet.blocklist").exit_illegal()
end
-- check if skylink v1 is present on blocklist (compare hashes)
if require("skynet.blocklist").is_blocked(ngx.var.skylink_v1) then
return require("skynet.blocklist").exit_illegal()
end
-- if skylink is found on nocache list then set internal nocache variable
-- to tell nginx that it should not try and cache this file (too large)
if ngx.shared.nocache:get(ngx.var.skylink_v1) then
ngx.var.nocache = "1"
-- if skylink is found on nocache list then set internal nocache variable
-- to tell nginx that it should not try and cache this file (too large)
if ngx.shared.nocache:get(ngx.var.skylink_v1) then
ngx.var.nocache = "1"
end
end
if require("skynet.account").accounts_enabled() then
@ -85,18 +88,21 @@ header_filter_by_lua_block {
ngx.header["Skynet-Portal-Api"] = ngx.var.scheme .. "://" .. os.getenv("PORTAL_DOMAIN")
ngx.header["Skynet-Server-Api"] = ngx.var.scheme .. "://" .. os.getenv("SERVER_DOMAIN")
-- not empty skynet_proof means this is a skylink v2 request
-- so we should replace the Skynet-Proof header with the one
-- we got from /skynet/resolve/ endpoint, otherwise we would
-- be serving cached empty v1 skylink Skynet-Proof header
if ngx.var.skynet_proof and ngx.var.skynet_proof ~= "" then
ngx.header["Skynet-Proof"] = ngx.var.skynet_proof
end
-- the block below only makes sense if we are using nginx cache
if not ngx.var.skyd_disk_cache_enabled then
-- not empty skynet_proof means this is a skylink v2 request
-- so we should replace the Skynet-Proof header with the one
-- we got from /skynet/resolve/ endpoint, otherwise we would
-- be serving cached empty v1 skylink Skynet-Proof header
if ngx.var.skynet_proof and ngx.var.skynet_proof ~= "" then
ngx.header["Skynet-Proof"] = ngx.var.skynet_proof
end
-- add skylink to nocache list if it exceeds 1GB (1e+9 bytes) threshold
-- (content length can be nil for already cached files - we can ignore them)
if ngx.header["Content-Length"] and tonumber(ngx.header["Content-Length"]) > 1e+9 then
ngx.shared.nocache:set(ngx.var.skylink_v1, ngx.header["Content-Length"])
-- add skylink to nocache list if it exceeds 1GB (1e+9 bytes) threshold
-- (content length can be nil for already cached files - we can ignore them)
if ngx.header["Content-Length"] and tonumber(ngx.header["Content-Length"]) > 1e+9 then
ngx.shared.nocache:set(ngx.var.skylink_v1, ngx.header["Content-Length"])
end
end
}