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require 'em-http'
require 'json'
module Nickserver; module Couch
class FetchKey
include EM::Deferrable
VIEW = "_design/Identity/_view/pgp_key_by_email"
def initialize(options={})
@timeout = 5
end
def get(uid)
couch_request(uid)
self
end
protected
#
# For example:
# curl "$COUCH/identities/_design/Identity/_view/pgp_key_by_email?key=\"test1@bitmask.net\""
#
def couch_request(uid)
query = {"reduce" => "false", "key" => "\"#{uid}\""}
request = EventMachine::HttpRequest.new(FetchKey.couch_url).get(:timeout => @timeout, :query => query)
request.callback {|http|
if http.response_header.status != 200
self.fail http.response_header.status, 'Unknown Error'
else
self.succeed parse_key_from_response(uid, http.response)
end
}.errback {|http|
self.fail 0, http.error
}
end
def parse_key_from_response(uid, response)
json = JSON.load(response)
if json["rows"].empty?
self.fail 404, "Not Found"
else
return json["rows"].first["value"]
end
rescue Exception
self.fail 0, "Error parsing CouchDB reply"
end
def self.couch_url
@couch_url ||= begin
url = ['http://']
if Config.couch_user
url.push Config.couch_user, ':', Config.couch_password, '@'
end
url.push Config.couch_host, ':', Config.couch_port, '/', Config.couch_database
url.push '/', VIEW
url.join
end
end
end
end; end
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