netcmd: move method print_json to command base class

This is used in quite a few commands, move to base class.

This ensures the correct encoder class and settings are always used,
and they are only defined in one place.

Signed-off-by: Rob van der Linde <rob@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>

python/samba/netcmd/__init__.py

@@ -16,6 +16,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
+import json
 import optparse
 import sys
 import textwrap
@@ -29,6 +30,7 @@ from samba.getopt import SambaOption, OptionError
 from samba.logger import get_samba_logger
 from samba.samdb import SamDB
 
+from .encoders import JSONEncoder
 from .validators import ValidationError
 
 
@@ -151,6 +153,15 @@ class Command(object):
         return SamDB(ldap_url, credentials=creds,
                      session_info=system_session(lp), lp=lp)
 
+    def print_json(self, data):
+        """Print json on the screen using consistent formatting and sorting.
+
+        A custom JSONEncoder class is used to help with serializing unknown
+        objects such as Dn for example.
+        """
+        json.dump(data, self.outf, cls=JSONEncoder, indent=2, sort_keys=True)
+        self.outf.write("\n")
+
     def show_command_error(self, e):
         """display a command error"""
         if isinstance(e, CommandError):

python/samba/netcmd/domain/auth/base.py

@@ -20,10 +20,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
-import json
-
 from samba.netcmd import Command, CommandError
-from samba.netcmd.encoders import JSONEncoder
 from samba.netcmd.domain.models import AuthenticationPolicy
 
 
@@ -32,15 +29,6 @@ class SiloCommand(Command):
         super().__init__(*args, **kwargs)
         self.ldb = None
 
-    def print_json(self, data):
-        """Print json on the screen using consistent formatting and sorting.
-
-        A custom JSONEncoder class is used to help with serializing unknown
-        objects such as Dn for example.
-        """
-        json.dump(data, self.outf, cls=JSONEncoder, indent=2, sort_keys=True)
-        self.outf.write("\n")
-
     def get_policy(self, name):
         """Helper function to return auth policy or raise CommandError.
 

python/samba/netcmd/domain/claim/base.py

@@ -20,11 +20,8 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
-import json
-
 from ldb import SCOPE_ONELEVEL
 from samba.netcmd import Command
-from samba.netcmd.encoders import JSONEncoder
 
 
 class ClaimCommand(Command):
@@ -34,15 +31,6 @@ class ClaimCommand(Command):
         super().__init__(*args, **kwargs)
         self.ldb = None
 
-    def print_json(self, data):
-        """Print json on the screen using consistent formatting and sorting.
-
-        A custom JSONEncoder class is used to help with serializing unknown
-        objects such as Dn for example.
-        """
-        json.dump(data, self.outf, cls=JSONEncoder, indent=2, sort_keys=True)
-        self.outf.write("\n")
-
     def get_attribute_from_schema(self, name):
         """Find DN by name in attribute schema.