Support for Borg --info via borgmatic command-line (#61).

NEWS

@@ -1,14 +1,15 @@
 1.1.16.dev0
+ * #61: Support for Borg --list option via borgmatic command-line to list all archives.
+ * #61: Support for Borg --info option via borgmatic command-line to display summary information.
+ * #62: Update README to mention other ways of installing borgmatic.
  * Support for Borg --prefix option for consistency checks via "prefix" option in borgmatic's
    consistency configuration.
  * Add introductory screencast link to documentation.
- * Update tox.ini to only assume Python 3.x instead of Python 3.4 specifically.
- * #62: Update README to mention other ways of installing borgmatic.
  * #59: Ignore "check_last" and consistency "prefix" when "archives" not in consistency checks.
  * #60: Add "Persistent" flag to systemd timer example.
  * #63: Support for Borg --nobsdflags option to skip recording bsdflags (e.g. NODUMP, IMMUTABLE) in
    archive.
- * #61: Support for Borg --list option via borgmatic command-line to list all archives.
+ * Update tox.ini to only assume Python 3.x instead of Python 3.4 specifically.
 
 1.1.15
  * Support for Borg BORG_PASSCOMMAND environment variable to read a password from an external file.

borgmatic/borg/info.py

@@ -0,0 +1,29 @@
+import logging
+import subprocess
+
+from borgmatic.verbosity import VERBOSITY_SOME, VERBOSITY_LOTS
+
+
+logger = logging.getLogger(__name__)
+
+
+def display_archives_info(verbosity, repository, storage_config, local_path='borg',
+                          remote_path=None):
+    '''
+    Given a verbosity flag, a local or remote repository path, and a storage config dict,
+    display summary information for Borg archives in the repository.
+    '''
+    lock_wait = storage_config.get('lock_wait', None)
+
+    full_command = (
+        (local_path, 'info', repository)
+        + (('--remote-path', remote_path) if remote_path else ())
+        + (('--lock-wait', str(lock_wait)) if lock_wait else ())
+        + {
+            VERBOSITY_SOME: ('--info',),
+            VERBOSITY_LOTS: ('--debug',),
+        }.get(verbosity, ())
+    )
+
+    logger.debug(' '.join(full_command))
+    subprocess.check_call(full_command)

borgmatic/borg/list.py

@@ -0,0 +1,28 @@
+import logging
+import subprocess
+
+from borgmatic.verbosity import VERBOSITY_SOME, VERBOSITY_LOTS
+
+
+logger = logging.getLogger(__name__)
+
+
+def list_archives(verbosity, repository, storage_config, local_path='borg', remote_path=None):
+    '''
+    Given a verbosity flag, a local or remote repository path, and a storage config dict,
+    list Borg archives in the repository.
+    '''
+    lock_wait = storage_config.get('lock_wait', None)
+
+    full_command = (
+        (local_path, 'list', repository)
+        + (('--remote-path', remote_path) if remote_path else ())
+        + (('--lock-wait', str(lock_wait)) if lock_wait else ())
+        + {
+            VERBOSITY_SOME: ('--info',),
+            VERBOSITY_LOTS: ('--debug',),
+        }.get(verbosity, ())
+    )
+
+    logger.debug(' '.join(full_command))
+    subprocess.check_call(full_command)

borgmatic/commands/borgmatic.py

@@ -6,7 +6,7 @@ from subprocess import CalledProcessError
 import sys
 
 from borgmatic.borg import check as borg_check, create as borg_create, prune as borg_prune, \
-     list as borg_list
+     list as borg_list, info as borg_info
 from borgmatic.commands import hook
 from borgmatic.config import collect, convert, validate
 from borgmatic.signals import configure_signals
@@ -68,6 +68,12 @@ def parse_arguments(*arguments):
         action='store_true',
         help='List archives',
     )
+    parser.add_argument(
+        '-i', '--info',
+        dest='info',
+        action='store_true',
+        help='Display summary information on archives',
+    )
     parser.add_argument(
         '-n', '--dry-run',
         dest='dry_run',
@@ -84,11 +90,12 @@ def parse_arguments(*arguments):
 
     # If any of the action flags are explicitly requested, leave them as-is. Otherwise, assume
     # defaults: Mutate the given arguments to enable the default actions.
-    if not args.prune and not args.create and not args.check and not args.list:
+    if args.prune or args.create or args.check or args.list or args.info:
+        return args
+
     args.prune = True
     args.create = True
     args.check = True
-
     return args
 
 
@@ -154,6 +161,15 @@ def run_configuration(config_filename, args):  # pragma: no cover
                     local_path=local_path,
                     remote_path=remote_path,
                 )
+            if args.info:
+                logger.info('{}: Displaying summary info for archives'.format(repository))
+                borg_info.display_archives_info(
+                    args.verbosity,
+                    repository,
+                    storage,
+                    local_path=local_path,
+                    remote_path=remote_path,
+                )
 
         hook.execute_hook(hooks.get('after_backup'), config_filename, 'post-backup')
     except (OSError, CalledProcessError):

borgmatic/tests/unit/borg/test_info.py

@@ -0,0 +1,77 @@
+from collections import OrderedDict
+
+from flexmock import flexmock
+
+from borgmatic.borg import info as module
+from borgmatic.verbosity import VERBOSITY_SOME, VERBOSITY_LOTS
+
+
+def insert_subprocess_mock(check_call_command, **kwargs):
+    subprocess = flexmock(module.subprocess)
+    subprocess.should_receive('check_call').with_args(check_call_command, **kwargs).once()
+
+
+INFO_COMMAND = ('borg', 'info', 'repo')
+
+
+def test_display_archives_info_calls_borg_with_parameters():
+    insert_subprocess_mock(INFO_COMMAND)
+
+    module.display_archives_info(
+        verbosity=None,
+        repository='repo',
+        storage_config={},
+    )
+
+
+def test_display_archives_info_with_verbosity_some_calls_borg_with_info_parameter():
+    insert_subprocess_mock(INFO_COMMAND + ('--info',))
+
+    module.display_archives_info(
+        repository='repo',
+        storage_config={},
+        verbosity=VERBOSITY_SOME,
+    )
+
+
+def test_display_archives_info_with_verbosity_lots_calls_borg_with_debug_parameter():
+    insert_subprocess_mock(INFO_COMMAND + ('--debug',))
+
+    module.display_archives_info(
+        repository='repo',
+        storage_config={},
+        verbosity=VERBOSITY_LOTS,
+    )
+
+
+def test_display_archives_info_with_local_path_calls_borg_via_local_path():
+    insert_subprocess_mock(('borg1',) + INFO_COMMAND[1:])
+
+    module.display_archives_info(
+        verbosity=None,
+        repository='repo',
+        storage_config={},
+        local_path='borg1',
+    )
+
+
+def test_display_archives_info_with_remote_path_calls_borg_with_remote_path_parameters():
+    insert_subprocess_mock(INFO_COMMAND + ('--remote-path', 'borg1'))
+
+    module.display_archives_info(
+        verbosity=None,
+        repository='repo',
+        storage_config={},
+        remote_path='borg1',
+    )
+
+
+def test_display_archives_info_with_lock_wait_calls_borg_with_lock_wait_parameters():
+    storage_config = {'lock_wait': 5}
+    insert_subprocess_mock(INFO_COMMAND + ('--lock-wait', '5'))
+
+    module.display_archives_info(
+        verbosity=None,
+        repository='repo',
+        storage_config=storage_config,
+    )