Move imports for startup speed

tests/cli/test_config.py

@@ -60,8 +60,7 @@ def test_storage_instance_from_config(monkeypatch):
         assert kw == {'foo': 'bar', 'baz': 1}
         return 'OK'
 
-    import vdirsyncer.storage
+    monkeypatch.setitem(cli.utils.storage_names._storages,
-    monkeypatch.setitem(vdirsyncer.cli.utils.storage_names._storages,
                         'lol', lol)
     config = {'type': 'lol', 'foo': 'bar', 'baz': 1}
     assert cli.utils.storage_instance_from_config(config) == 'OK'
@@ -75,7 +74,7 @@ def test_parse_pairs_args():
         'eins': ('zwei', 'drei', {'ha': True}, {})
     }
     assert sorted(
-        cli.parse_pairs_args(['foo/foocoll', 'one', 'eins'], pairs)
+        cli.utils.parse_pairs_args(['foo/foocoll', 'one', 'eins'], pairs)
     ) == [
         ('eins', set()),
         ('foo', {'foocoll'}),

vdirsyncer/cli/__init__.py

@@ -3,19 +3,38 @@
 import functools
 import sys
 
-from .tasks import discover_collections, repair_collection, sync_pair
-from .utils import CliError, WorkerQueue, cli_logger, handle_cli_error, \
-    load_config, parse_pairs_args
 from .. import __version__, log
 from ..doubleclick import click, ctx
 
 
+cli_logger = log.get(__name__)
+
+
+class CliError(RuntimeError):
+    def __init__(self, msg, problems=None):
+        self.msg = msg
+        self.problems = problems
+        RuntimeError.__init__(self, msg)
+
+    def format_cli(self):
+        msg = self.msg.rstrip(u'.:')
+        if self.problems:
+            msg += u':'
+            if len(self.problems) == 1:
+                msg += u' {}'.format(self.problems[0])
+            else:
+                msg += u'\n' + u'\n  - '.join(self.problems) + u'\n\n'
+
+        return msg
+
+
 def catch_errors(f):
     @functools.wraps(f)
     def inner(*a, **kw):
         try:
             f(*a, **kw)
         except:
+            from .utils import handle_cli_error
             handle_cli_error()
             sys.exit(1)
 
@@ -41,6 +60,7 @@ def app(verbosity):
     '''
     vdirsyncer -- synchronize calendars and contacts
     '''
+    from .utils import load_config
     log.add_handler(log.stdout_handler)
     log.set_level(verbosity)
 
@@ -89,6 +109,8 @@ def sync(pairs, force_delete, max_workers):
     `vdirsyncer sync bob/first_collection` will sync "first_collection" from
     the pair "bob".
     '''
+    from .tasks import sync_pair
+    from .utils import parse_pairs_args, WorkerQueue
     general, all_pairs, all_storages = ctx.obj['config']
 
     cli_logger.debug('Using {} maximal workers.'.format(max_workers))
@@ -114,6 +136,8 @@ def discover(pairs, max_workers):
     '''
     Refresh collection cache for the given pairs.
     '''
+    from .tasks import discover_collections
+    from .utils import WorkerQueue
     general, all_pairs, all_storages = ctx.obj['config']
     cli_logger.debug('Using {} maximal workers.'.format(max_workers))
     wq = WorkerQueue(max_workers)
@@ -151,5 +175,6 @@ def repair(collection):
     Example: `vdirsyncer repair calendars_local/foo` repairs the `foo`
     collection of the `calendars_local` storage.
     '''
+    from .tasks import repair_collection
     general, all_pairs, all_storages = ctx.obj['config']
     repair_collection(general, all_pairs, all_storages, collection)

vdirsyncer/cli/utils.py

@@ -13,7 +13,8 @@ from itertools import chain
 
 from atomicwrites import atomic_write
 
-from .. import DOCS_HOME, PROJECT_HOME, exceptions, log
+from . import cli_logger, CliError
+from .. import DOCS_HOME, PROJECT_HOME, exceptions
 from ..doubleclick import click
 from ..sync import IdentConflict, StorageEmpty, SyncConflict
 from ..utils import expand_path, get_class_init_args
@@ -58,31 +59,11 @@ storage_names = _StorageIndex()
 del _StorageIndex
 
 
-cli_logger = log.get(__name__)
-
 GENERAL_ALL = frozenset(['status_path', 'password_command'])
 GENERAL_REQUIRED = frozenset(['status_path'])
 SECTION_NAME_CHARS = frozenset(chain(string.ascii_letters, string.digits, '_'))
 
 
-class CliError(RuntimeError):
-    def __init__(self, msg, problems=None):
-        self.msg = msg
-        self.problems = problems
-        RuntimeError.__init__(self, msg)
-
-    def format_cli(self):
-        msg = self.msg.rstrip(u'.:')
-        if self.problems:
-            msg += u':'
-            if len(self.problems) == 1:
-                msg += u' {}'.format(self.problems[0])
-            else:
-                msg += u'\n' + u'\n  - '.join(self.problems) + u'\n\n'
-
-        return msg
-
-
 class JobFailed(RuntimeError):
     pass