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mod_http_file_share: Collect cache hit/miss statistics for downloads

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This commit is contained in:
Kim Alvefur 2021-02-02 22:16:20 +01:00
parent e45dee37bd
commit cdbb77ccbf
1 changed files with 5 additions and 1 deletions
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6
plugins/mod_http_file_share.lua
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@ -274,6 +274,9 @@ function handle_upload(event, path) -- PUT /upload/:slot
end
local download_cache_hit = module:measure("download_cache_hit", "rate");
local download_cache_miss = module:measure("download_cache_miss", "rate");
function handle_download(event, path) -- GET /uploads/:slot+filename
local request, response = event.request, event.response;
local slot_id = path:match("^[^/]+");
@ -281,7 +284,7 @@ function handle_download(event, path) -- GET /uploads/:slot+filename
local cached = upload_cache:get(slot_id);
if cached then
module:log("debug", "Cache hit");
-- TODO stats (instead of logging?)
download_cache_hit();
basename = cached.name;
filesize = cached.size;
filetype = cached.type;
@ -290,6 +293,7 @@ function handle_download(event, path) -- GET /uploads/:slot+filename
-- TODO cache negative hits?
else
module:log("debug", "Cache miss");
download_cache_miss();
local slot, when = errors.coerce(uploads:get(nil, slot_id));
if not slot then
module:log("debug", "uploads:get(%q) --> not-found, %s", slot_id, when);