require 'pg'
-require 'common/plugin'
-require 'rm/rm_plugin'
+require 'common/davical_plugin'
+require 'mv/mv_plugin'
+# Handle moving (renaming) DAViCal users in its database. DAViCal has
+# no concept of domains.
+#
class DavicalMv
- #
- # DAViCal only supports Postgres, so even if we ever are
- # database-agnostic, this plugin can't be.
- #
- include Plugin
+ include DavicalPlugin
include MvPlugin
- def initialize()
- cfg = Configuration.new()
- @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
- end
-
-
- def describe_domain(domain)
- # DAViCal doesn't have a concept of domains.
- return 'N/A'
- end
-
-
- def describe_account(account)
- principal_id = self.get_principal_id(account)
-
- if principal_id.nil?
- return 'User not found'
- else
- return "Principal ID: #{principal_id}"
- end
- end
-
-
- def mv_domain(from, to)
- # DAViCal doesn't have a concept of domains.
- end
-
-
- def mv_account(from, to)
- # Delete the given username. DAViCal uses foreign keys properly
- # and only supports postgres, so we let the ON UPDATE CASCADE
- # trigger handle most of the work.
- sql_queries = ['UPDATE usr SET username = $1 WHERE username = $2']
-
- begin
- connection = PGconn.connect(@db_host,
- @db_port,
- @db_opts,
- @db_tty,
- @db_name,
- @db_user,
- @db_pass)
- sql_queries.each do |sql_query|
- connection.query(sql_query, [to, from])
- end
-
- connection.close()
-
- rescue PGError => e
- # Pretend like we're database-agnostic in case we ever are.
- raise DatabaseError.new(e)
- end
-
- end
-
-
- protected;
+ # Move the user *src* to *dst* within the DAViCal database. This
+ # should "rename" him in _every_ table where he is referenced.
+ # DAViCal uses foreign keys properly, so we let the ON UPDATE
+ # CASCADE trigger handle most of the work.
+ #
+ # This can fail is *src* does not exist, or if *dst* already exists
+ # before the move. It should also be an error if the destination
+ # domain doesn't exist. But DAViCal doesn't know about domains, so
+ # we let that slide.
+ #
+ # @param src [User] the source user to be moved.
+ #
+ # @param dst [User] the destination user being moved to.
+ #
+ def mv_user(src, dst)
+ raise NonexistentUserError.new(src.to_s()) if not user_exists(src)
+ raise UserAlreadyExistsError.new(dst.to_s()) if user_exists(dst)
- def get_principal_id(account)
- principal_id = nil
+ sql_query = 'UPDATE usr SET username = $1 WHERE username = $2;'
+ connection = PG::Connection.new(@db_hash)
begin
- connection = PGconn.connect(@db_host,
- @db_port,
- @db_opts,
- @db_tty,
- @db_name,
- @db_user,
- @db_pass)
-
- 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, [account]) do |result|
- if result.num_tuples > 0
- principal_id = result[0]['principal_id']
- end
- end
-
+ connection.sync_exec_params(sql_query, [dst.to_s(), src.to_s()])
+ ensure
+ # Make sure the connection gets closed even if the query explodes.
connection.close()
-
- rescue PGError => e
- # Pretend like we're database-agnostic in case we ever are.
- raise DatabaseError.new(e)
end
-
- return principal_id
end
end