lib,test: replace connection query() method with sync_exec{,_params}.
[mailshears.git] / lib / common / davical_plugin.rb
index 8684cca9e830a5005e98ef82c7ac916f511decf6..06abbfa99e31844b6ae22c5190a828837e59862c 100644 (file)
@@ -14,13 +14,14 @@ module DavicalPlugin
   # @param cfg [Configuration] the configuration for this plugin.
   #
   def initialize(cfg)
-    @db_host = cfg.davical_dbhost
-    @db_port = cfg.davical_dbport
-    @db_opts = cfg.davical_dbopts
-    @db_tty  = cfg.davical_dbtty
-    @db_name = cfg.davical_dbname
-    @db_user = cfg.davical_dbuser
-    @db_pass = cfg.davical_dbpass
+    @db_hash = {
+      :host     => cfg.davical_dbhost,
+      :port     => cfg.davical_dbport,
+      :options  => cfg.davical_dbopts,
+      :tty      => cfg.davical_dbtty,
+      :dbname   => cfg.davical_dbname,
+      :user     => cfg.davical_dbuser,
+      :password => cfg.davical_dbpass }
   end
 
 
@@ -48,18 +49,20 @@ module DavicalPlugin
   def list_users()
     usernames = []
 
-    connection = PGconn.connect(@db_host, @db_port, @db_opts, @db_tty,
-                                @db_name, @db_user, @db_pass)
+    connection = PG::Connection.new(@db_hash)
 
     # User #1 is the super-user, and not tied to an email address.
-    sql_query = 'SELECT username FROM usr WHERE user_no > 1'
+    sql_query = 'SELECT username FROM usr WHERE user_no > 1;'
 
-    connection.query(sql_query) do |result|
-      usernames = result.field_values('username')
+    begin
+      connection.sync_exec(sql_query) do |result|
+        usernames = result.field_values('username')
+      end
+    ensure
+      # Make sure the connection gets closed even if the query explodes.
+      connection.close()
     end
 
-    connection.close()
-
     return usernames.map{ |u| User.new(u) }
   end
 
@@ -77,22 +80,24 @@ module DavicalPlugin
   def get_principal_id(user)
     principal_id = nil
 
-    connection = PGconn.connect(@db_host, @db_port, @db_opts, @db_tty,
-                                @db_name, @db_user, @db_pass)
+    connection = PG::Connection.new(@db_hash)
 
     sql_query =  'SELECT principal.principal_id '
     sql_query += 'FROM (principal INNER JOIN usr '
     sql_query += '      ON principal.user_no = usr.user_no) '
     sql_query += 'WHERE usr.username = $1;'
 
-    connection.query(sql_query, [user.to_s()]) do |result|
-      if result.num_tuples > 0
-        principal_id = result[0]['principal_id']
+    begin
+      connection.sync_exec_params(sql_query, [user.to_s()]) do |result|
+        if result.num_tuples > 0
+          principal_id = result[0]['principal_id']
+        end
       end
+    ensure
+      # Make sure the connection gets closed even if the query explodes.
+      connection.close()
     end
 
-    connection.close()
-
     return principal_id
   end