Sha256: 622388fbd4c62f5a3862549681235dac4eef9d82e9e59b2206a3f2f615bc65ca
Contents?: true
Size: 1.24 KB
Versions: 8
Compression:
Stored size: 1.24 KB
Contents
require "faraday/middleware"
module ZendeskAPI
module Middleware
module Request
# Request middleware that caches responses based on etags
# can be removed once this is merged: https://github.com/pengwynn/faraday_middleware/pull/42
class EtagCache < Faraday::Middleware
def initialize(app, options = {})
@app = app
@cache = options[:cache] ||
raise("need :cache option e.g. ActiveSupport::Cache::MemoryStore.new")
@cache_key_prefix = options.fetch(:cache_key_prefix, :faraday_etags)
end
def call(env)
return @app.call(env) unless [:get, :head].include?(env[:method])
cache_key = [@cache_key_prefix, env[:url].to_s]
# send known etag
if cached = @cache.read(cache_key)
env[:request_headers]["If-None-Match"] ||= cached[:response_headers]["Etag"]
end
@app.call(env).on_complete do
if cached && env[:status] == 304 # not modified
env[:body] = cached[:body]
end
if env[:status] == 200 && env[:response_headers]["Etag"] # modified and cacheable
@cache.write(cache_key, env)
end
end
end
end
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems