Allow relative paths to external scripts.

helpers/postgresql.py

@@ -145,7 +145,7 @@ class Postgresql:
 
     def create_replica(self, master_connection, env):
         connstring = self.build_connstring(master_connection)
-        cmd = os.path.abspath(self.config['restore'])
+        cmd = self.config['restore']
         try:
             ret = subprocess.call(shlex.split(cmd) + [self.scope, "replica", self.data_dir, connstring], env=env)
             self.delete_trigger_file()
@@ -168,7 +168,7 @@ class Postgresql:
         """ pick a callback command and call it without waiting for it to finish """
         if not self.callback or cb_name not in self.callback:
             return False
-        cmd = os.path.abspath(self.callback[cb_name])
+        cmd = self.callback[cb_name]
         if is_leader is None:
             try:
                 is_leader = self.is_leader(check_only=True)

postgres0.yml

@@ -46,7 +46,7 @@ postgresql:
     env_dir: /home/postgres/etc/wal-e.d/env
     threshold_megabytes: 10240
     threshold_backup_size_percentage: 30
-  restore: /usr/bin/true
+  restore: "true"
   #recovery_conf:
     #restore_command: cp ../wal_archive/%f %p
   parameters:

tests/test_postgresql.py

@@ -118,9 +118,9 @@ class TestPostgresql(unittest.TestCase):
                                              'password': 'rep-pass',
                                              'network': '127.0.0.1/32'},
                              'parameters': {'foo': 'bar'}, 'recovery_conf': {'foo': 'bar'},
-                             'callbacks': {'on_start': '/usr/bin/true', 'on_stop': '/usr/bin/true',
-                                           'on_restart': '/usr/bin/true', 'on_role_change': '/bin/true',
-                                           'on_reload': '/usr/bin/true'
+                             'callbacks': {'on_start': 'true', 'on_stop': 'true',
+                                           'on_restart': 'true', 'on_role_change': 'true',
+                                           'on_reload': 'true'
                                            },
                              'restore': '/usr/bin/true'})
         psycopg2.connect = psycopg2_connect