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Get the metadata from Redis on a HEAD request

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No need to hit the storage backend, we can set the response headers from
the data in Redis
This commit is contained in:
Greg Karékinian
2018-04-16 22:08:36 +02:00
parent 7bd45543f6
commit 21dad2aba7
3 changed files with 86 additions and 28 deletions
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25
lib/remote_storage/rest_provider.rb
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@@ -36,23 +36,30 @@ module RemoteStorage
end
def get_head(user, directory, key)
url = url_for_key(user, directory, key)
none_match = (server.env["HTTP_IF_NONE_MATCH"] || "").split(",")
.map(&:strip)
.map { |s| s.gsub(/^"?W\//, "") }
metadata = redis.hgetall redis_metadata_object_key(user, directory, key)
res = do_head_request(url)
server.halt 404 if metadata.empty?
set_response_headers(res)
rescue RestClient::ResourceNotFound
server.halt 404
# Set the response headers for a 304 or 200 response
server.headers["ETag"] = %Q("#{metadata["e"]}")
server.headers["Last-Modified"] = Time.at(metadata["m"].to_i / 1000).httpdate
if none_match.include? %Q("#{metadata["e"]}")
server.halt 304
end
end
def get_data(user, directory, key)
none_match = (server.env["HTTP_IF_NONE_MATCH"] || "").split(",")
.map(&:strip)
.map { |s| s.gsub(/^"?W\//, "") }
existing_metadata = redis.hgetall redis_metadata_object_key(user, directory, key)
if none_match.include? %Q("#{existing_metadata["e"]}")
server.headers["ETag"] = %Q("#{existing_metadata["e"]}")
server.headers["Last-Modified"] = Time.at(existing_metadata["m"].to_i / 1000).httpdate
metadata = redis.hgetall redis_metadata_object_key(user, directory, key)
if none_match.include? %Q("#{metadata["e"]}")
server.headers["ETag"] = %Q("#{metadata["e"]}")
server.headers["Last-Modified"] = Time.at(metadata["m"].to_i / 1000).httpdate
server.halt 304
end