refactor: use new couch_db classes from fetch_key

This moves all the em_http related stuff into a single adapter.
We're also not using callback and errback inside fetch_key or
server for couch requests anymore.

Changing the interface for hkp to do the same will follow.

1 files changed, 9 insertions, 47 deletions

diff --git a/lib/nickserver/couch/fetch_key.rb b/lib/nickserver/couch/fetch_key.rb
index 3fe2a63..2013bca 100644
--- a/lib/nickserver/couch/fetch_key.rb
+++ b/lib/nickserver/couch/fetch_key.rb
@@ -1,63 +1,25 @@
-require 'em-http'
-require 'json'
+require 'nickserver/couch_db/source'
+require 'nickserver/adapters/em_http'
 
 module Nickserver; module Couch
   class FetchKey
-    include EM::Deferrable
-
-    VIEW = "_design/Identity/_view/pgp_key_by_email"
 
     def initialize(options={})
-      @timeout = 5
+      @source = Nickserver::CouchDB::Source.new(adapter)
     end
 
-    def get(uid)
-      couch_request(uid)
-      self
+    def get(uid, &block)
+      source.query(uid, &block)
     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
+    attr_reader :source
 
-    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"
+    def adapter
+      @adapter ||= Nickserver::Adapters::EmHttp.new
     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
\ No newline at end of file
+end; end