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Added rss caching.

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This commit is contained in:
Martin Edenhofer 2012-05-06 23:36:24 +02:00
parent 06b5b1e166
commit 1adfda5b4f
1 changed files with 25 additions and 12 deletions
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15
app/controllers/rss_controller.rb
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@ -5,6 +5,10 @@ class RssController < ApplicationController
def fetch def fetch
url = params[:url] url = params[:url]
limit = params[:limit] || 10 limit = params[:limit] || 10
cache_key = 'rss::' + url
items = Rails.cache.read( cache_key )
if !items
response = Net::HTTP.get_response( URI.parse(url) ) response = Net::HTTP.get_response( URI.parse(url) )
if response.code.to_s != '200' if response.code.to_s != '200'
render :json => { :message => "failed to fetch #{url}, code: #{response.code}"}, :status => :unprocessable_entity render :json => { :message => "failed to fetch #{url}, code: #{response.code}"}, :status => :unprocessable_entity
@ -14,10 +18,19 @@ class RssController < ApplicationController
items = [] items = []
fetched = 0 fetched = 0
rss.items.each { |item| rss.items.each { |item|
items.push item record = {
:id => item.id,
:title => item.title,
:summary => item.summary,
:link => item.link,
:published => item.published
}
items.push record
fetched += 1 fetched += 1
break item if fetched == limit.to_i break item if fetched == limit.to_i
} }
Rails.cache.write( cache_key, items, :expires_in => 4.hours )
end
render :json => { :items => items } render :json => { :items => items }
end end