First crack at MySQL/MariaDB database restore (#228).

borgmatic/commands/borgmatic.py

@@ -18,7 +18,7 @@ from borgmatic.borg import list as borg_list
 from borgmatic.borg import prune as borg_prune
 from borgmatic.commands.arguments import parse_arguments
 from borgmatic.config import checks, collect, convert, validate
-from borgmatic.hooks import command, cronhub, cronitor, healthchecks, mysql, postgresql
+from borgmatic.hooks import command, cronhub, cronitor, dispatch, dump, healthchecks
 from borgmatic.logger import configure_logging, should_do_markup
 from borgmatic.signals import configure_signals
 from borgmatic.verbosity import verbosity_to_log_level
@@ -69,11 +69,12 @@ def run_configuration(config_filename, config, arguments):
                 'pre-backup',
                 global_arguments.dry_run,
             )
-            postgresql.dump_databases(
-                hooks.get('postgresql_databases'), config_filename, global_arguments.dry_run
-            )
-            mysql.dump_databases(
-                hooks.get('mysql_databases'), config_filename, global_arguments.dry_run
+            dispatch.call_hooks(
+                'dump_databases',
+                hooks,
+                config_filename,
+                dump.DATABASE_HOOK_NAMES,
+                global_arguments.dry_run,
             )
         except (OSError, CalledProcessError) as error:
             encountered_error = error
@@ -104,11 +105,12 @@ def run_configuration(config_filename, config, arguments):
 
     if 'create' in arguments and not encountered_error:
         try:
-            postgresql.remove_database_dumps(
-                hooks.get('postgresql_databases'), config_filename, global_arguments.dry_run
-            )
-            mysql.remove_database_dumps(
-                hooks.get('mysql_databases'), config_filename, global_arguments.dry_run
+            dispatch.call_hooks(
+                'remove_database_dumps',
+                hooks,
+                config_filename,
+                dump.DATABASE_HOOK_NAMES,
+                global_arguments.dry_run,
             )
             command.execute_hook(
                 hooks.get('after_backup'),
@@ -260,12 +262,20 @@ def run_actions(
                 restore_names = []
 
             # Extract dumps for the named databases from the archive.
-            dump_patterns = postgresql.make_database_dump_patterns(restore_names)
+            dump_patterns = dispatch.call_hooks(
+                'make_database_dump_patterns',
+                hooks,
+                repository,
+                dump.DATABASE_HOOK_NAMES,
+                restore_names,
+            )
             borg_extract.extract_archive(
                 global_arguments.dry_run,
                 repository,
                 arguments['restore'].archive,
-                postgresql.convert_glob_patterns_to_borg_patterns(dump_patterns),
+                dump.convert_glob_patterns_to_borg_patterns(
+                    [pattern for patterns in dump_patterns.values() for pattern in patterns]
+                ),
                 location,
                 storage,
                 local_path=local_path,
@@ -274,17 +284,35 @@ def run_actions(
                 progress=arguments['restore'].progress,
             )
 
-            # Map the restore names to the corresponding database configurations.
-            databases = list(
-                postgresql.get_database_configurations(
-                    hooks.get('postgresql_databases'),
-                    restore_names or postgresql.get_database_names_from_dumps(dump_patterns),
+            # Map the restore names or detected dumps to the corresponding database configurations.
+            # TODO: Need to filter restore_names by database type? Maybe take a database --type argument to disambiguate.
+            restore_databases = {
+                hook_name: list(
+                    dump.get_database_configurations(
+                        hooks.get(hook_name),
+                        restore_names
+                        or dump.get_database_names_from_dumps(dump_patterns['hook_name']),
+                    )
                 )
-            )
+                for hook_name in dump.DATABASE_HOOK_NAMES
+                if hook_name in hooks
+            }
 
             # Finally, restore the databases and cleanup the dumps.
-            postgresql.restore_database_dumps(databases, repository, global_arguments.dry_run)
-            postgresql.remove_database_dumps(databases, repository, global_arguments.dry_run)
+            dispatch.call_hooks(
+                'restore_database_dumps',
+                restore_databases,
+                repository,
+                dump.DATABASE_HOOK_NAMES,
+                global_arguments.dry_run,
+            )
+            dispatch.call_hooks(
+                'remove_database_dumps',
+                restore_databases,
+                repository,
+                dump.DATABASE_HOOK_NAMES,
+                global_arguments.dry_run,
+            )
     if 'list' in arguments:
         if arguments['list'].repository is None or repository == arguments['list'].repository:
             logger.info('{}: Listing archives'.format(repository))

borgmatic/execute.py

@@ -61,6 +61,7 @@ def execute_command(
     full_command,
     output_log_level=logging.INFO,
     output_file=None,
+    input_file=None,
     shell=False,
     extra_environment=None,
     working_directory=None,
@@ -70,10 +71,11 @@ def execute_command(
     Execute the given command (a sequence of command/argument strings) and log its output at the
     given log level. If output log level is None, instead capture and return the output. If an
     open output file object is given, then write stdout to the file and only log stderr (but only
-    if an output log level is set). If shell is True, execute the command within a shell. If an
-    extra environment dict is given, then use it to augment the current environment, and pass the
-    result into the command. If a working directory is given, use that as the present working
-    directory when running the command.
+    if an output log level is set). If an open input file object is given, then read stdin from the
+    file. If shell is True, execute the command within a shell. If an extra environment dict is
+    given, then use it to augment the current environment, and pass the result into the command. If
+    a working directory is given, use that as the present working directory when running the
+    command.
 
     Raise subprocesses.CalledProcessError if an error occurs while running the command.
     '''
@@ -88,6 +90,7 @@ def execute_command(
     else:
         process = subprocess.Popen(
             full_command,
+            stdin=input_file,
             stdout=output_file or subprocess.PIPE,
             stderr=subprocess.PIPE if output_file else subprocess.STDOUT,
             shell=shell,

borgmatic/hooks/dispatch.py

@@ -0,0 +1,55 @@
+import logging
+
+from borgmatic.hooks import mysql, postgresql
+
+logger = logging.getLogger(__name__)
+
+HOOK_NAME_TO_MODULE = {'postgresql_databases': postgresql, 'mysql_databases': mysql}
+
+
+def call_hook(function_name, hooks, log_prefix, hook_name, *args, **kwargs):
+    '''
+    Given the hooks configuration dict and a prefix to use in log entries, call the requested
+    function of the Python module corresponding to the given hook name. Supply that call with the
+    configuration for this hook, the log prefix, and any given args and kwargs. Return any return
+    value.
+
+    If the hook name is not present in the hooks configuration, then bail without calling anything.
+
+    Raise ValueError if the hook name is unknown.
+    Raise AttributeError if the function name is not found in the module.
+    Raise anything else that the called function raises.
+    '''
+    config = hooks.get(hook_name)
+    if not config:
+        logger.debug('{}: No {} hook configured.'.format(log_prefix, hook_name))
+        return
+
+    try:
+        module = HOOK_NAME_TO_MODULE[hook_name]
+    except KeyError:
+        raise ValueError('Unknown hook name: {}'.format(hook_name))
+
+    logger.debug('{}: Calling {} hook function {}'.format(log_prefix, hook_name, function_name))
+    return getattr(module, function_name)(config, log_prefix, *args, **kwargs)
+
+
+def call_hooks(function_name, hooks, log_prefix, hook_names, *args, **kwargs):
+    '''
+    Given the hooks configuration dict and a prefix to use in log entries, call the requested
+    function of the Python module corresponding to each given hook name. Supply each call with the
+    configuration for that hook, the log prefix, and any given args and kwargs. Collect any return
+    values into a dict from hook name to return value.
+
+    If the hook name is not present in the hooks configuration, then don't call the function for it,
+    and omit it from the return values.
+
+    Raise ValueError if the hook name is unknown.
+    Raise AttributeError if the function name is not found in the module.
+    Raise anything else that a called function raises. An error stops calls to subsequent functions.
+    '''
+    return {
+        hook_name: call_hook(function_name, hooks, log_prefix, hook_name, *args, **kwargs)
+        for hook_name in hook_names
+        if hook_name in hooks
+    }

borgmatic/hooks/dump.py

@@ -1,8 +1,11 @@
+import glob
 import logging
 import os
 
 logger = logging.getLogger(__name__)
 
+DATABASE_HOOK_NAMES = ('postgresql_databases', 'mysql_databases')
+
 
 def make_database_dump_filename(dump_path, name, hostname=None):
     '''
@@ -52,3 +55,48 @@ def remove_database_dumps(dump_path, databases, database_type_name, log_prefix,
 
         if len(os.listdir(dump_path)) == 0:
             os.rmdir(dump_path)
+
+
+def convert_glob_patterns_to_borg_patterns(patterns):
+    '''
+    Convert a sequence of shell glob patterns like "/etc/*" to the corresponding Borg archive
+    patterns like "sh:etc/*".
+    '''
+    return ['sh:{}'.format(pattern.lstrip(os.path.sep)) for pattern in patterns]
+
+
+def get_database_names_from_dumps(patterns):
+    '''
+    Given a sequence of database dump patterns, find the corresponding database dumps on disk and
+    return the database names from their filenames.
+    '''
+    return [os.path.basename(dump_path) for pattern in patterns for dump_path in glob.glob(pattern)]
+
+
+def get_database_configurations(databases, names):
+    '''
+    Given the full database configuration dicts as per the configuration schema, and a sequence of
+    database names, filter down and yield the configuration for just the named databases.
+    Additionally, if a database configuration is named "all", project out that configuration for
+    each named database.
+
+    Raise ValueError if one of the database names cannot be matched to a database in borgmatic's
+    database configuration.
+    '''
+    named_databases = {database['name']: database for database in databases}
+
+    for name in names:
+        database = named_databases.get(name)
+        if database:
+            yield database
+            continue
+
+        if 'all' in named_databases:
+            yield {**named_databases['all'], **{'name': name}}
+            continue
+
+        raise ValueError(
+            'Cannot restore database "{}", as it is not defined in borgmatic\'s configuration'.format(
+                name
+            )
+        )

borgmatic/hooks/mysql.py

@@ -14,10 +14,6 @@ def dump_databases(databases, log_prefix, dry_run):
     dicts, one dict describing each database as per the configuration schema. Use the given log
     prefix in any log entries. If this is a dry run, then don't actually dump anything.
     '''
-    if not databases:
-        logger.debug('{}: No MySQL databases configured'.format(log_prefix))
-        return
-
     dry_run_label = ' (dry run; not actually dumping anything)' if dry_run else ''
 
     logger.info('{}: Dumping MySQL databases{}'.format(log_prefix, dry_run_label))
@@ -48,10 +44,51 @@ def dump_databases(databases, log_prefix, dry_run):
             )
 
 
-def remove_database_dumps(databases, log_prefix, dry_run):
+def remove_database_dumps(databases, log_prefix, dry_run):  # pragma: no cover
     '''
     Remove the database dumps for the given databases. The databases are supplied as a sequence of
     dicts, one dict describing each database as per the configuration schema. Use the log prefix in
     any log entries. If this is a dry run, then don't actually remove anything.
     '''
     dump.remove_database_dumps(DUMP_PATH, databases, 'MySQL', log_prefix, dry_run)
+
+
+def make_database_dump_patterns(databases, log_prefix, names):
+    '''
+    Given a sequence of configurations dicts, a prefix to log with, and a sequence of database
+    names to match, return the corresponding glob patterns to match the database dumps in an
+    archive. An empty sequence of names indicates that the patterns should match all dumps.
+    '''
+    return [
+        dump.make_database_dump_filename(DUMP_PATH, name, hostname='*') for name in (names or ['*'])
+    ]
+
+
+def restore_database_dumps(databases, log_prefix, dry_run):
+    '''
+    Restore the given MySQL/MariaDB databases from disk. The databases are supplied as a sequence of
+    dicts, one dict describing each database as per the configuration schema. Use the given log
+    prefix in any log entries. If this is a dry run, then don't actually restore anything.
+    '''
+    dry_run_label = ' (dry run; not actually restoring anything)' if dry_run else ''
+
+    for database in databases:
+        dump_filename = dump.make_database_dump_filename(
+            DUMP_PATH, database['name'], database.get('hostname')
+        )
+        restore_command = (
+            ('mysql', '--batch')
+            + (('--host', database['hostname']) if 'hostname' in database else ())
+            + (('--port', str(database['port'])) if 'port' in database else ())
+            + (('--protocol', 'tcp') if 'hostname' in database or 'port' in database else ())
+            + (('--user', database['username']) if 'username' in database else ())
+        )
+        extra_environment = {'MYSQL_PWD': database['password']} if 'password' in database else None
+
+        logger.debug(
+            '{}: Restoring MySQL database {}{}'.format(log_prefix, database['name'], dry_run_label)
+        )
+        if not dry_run:
+            execute_command(
+                restore_command, input_file=open(dump_filename), extra_environment=extra_environment
+            )

borgmatic/hooks/postgresql.py

@@ -1,4 +1,3 @@
-import glob
 import logging
 import os
 
@@ -15,10 +14,6 @@ def dump_databases(databases, log_prefix, dry_run):
     one dict describing each database as per the configuration schema. Use the given log prefix in
     any log entries. If this is a dry run, then don't actually dump anything.
     '''
-    if not databases:
-        logger.debug('{}: No PostgreSQL databases configured'.format(log_prefix))
-        return
-
     dry_run_label = ' (dry run; not actually dumping anything)' if dry_run else ''
 
     logger.info('{}: Dumping PostgreSQL databases{}'.format(log_prefix, dry_run_label))
@@ -49,7 +44,7 @@ def dump_databases(databases, log_prefix, dry_run):
             execute_command(command, extra_environment=extra_environment)
 
 
-def remove_database_dumps(databases, log_prefix, dry_run):
+def remove_database_dumps(databases, log_prefix, dry_run):  # pragma: no cover
     '''
     Remove the database dumps for the given databases. The databases are supplied as a sequence of
     dicts, one dict describing each database as per the configuration schema. Use the log prefix in
@@ -58,72 +53,23 @@ def remove_database_dumps(databases, log_prefix, dry_run):
     dump.remove_database_dumps(DUMP_PATH, databases, 'PostgreSQL', log_prefix, dry_run)
 
 
-def make_database_dump_patterns(names):
+def make_database_dump_patterns(databases, log_prefix, names):
     '''
-    Given a sequence of database names, return the corresponding glob patterns to match the database
-    dumps in an archive. An empty sequence of names indicates that the patterns should match all
-    dumps.
+    Given a sequence of configurations dicts, a prefix to log with, and a sequence of database
+    names to match, return the corresponding glob patterns to match the database dumps in an
+    archive. An empty sequence of names indicates that the patterns should match all dumps.
     '''
     return [
         dump.make_database_dump_filename(DUMP_PATH, name, hostname='*') for name in (names or ['*'])
     ]
 
 
-def convert_glob_patterns_to_borg_patterns(patterns):
-    '''
-    Convert a sequence of shell glob patterns like "/etc/*" to the corresponding Borg archive
-    patterns like "sh:etc/*".
-    '''
-    return ['sh:{}'.format(pattern.lstrip(os.path.sep)) for pattern in patterns]
-
-
-def get_database_names_from_dumps(patterns):
-    '''
-    Given a sequence of database dump patterns, find the corresponding database dumps on disk and
-    return the database names from their filenames.
-    '''
-    return [os.path.basename(dump_path) for pattern in patterns for dump_path in glob.glob(pattern)]
-
-
-def get_database_configurations(databases, names):
-    '''
-    Given the full database configuration dicts as per the configuration schema, and a sequence of
-    database names, filter down and yield the configuration for just the named databases.
-    Additionally, if a database configuration is named "all", project out that configuration for
-    each named database.
-
-    Raise ValueError if one of the database names cannot be matched to a database in borgmatic's
-    database configuration.
-    '''
-    named_databases = {database['name']: database for database in databases}
-
-    for name in names:
-        database = named_databases.get(name)
-        if database:
-            yield database
-            continue
-
-        if 'all' in named_databases:
-            yield {**named_databases['all'], **{'name': name}}
-            continue
-
-        raise ValueError(
-            'Cannot restore database "{}", as it is not defined in borgmatic\'s configuration'.format(
-                name
-            )
-        )
-
-
 def restore_database_dumps(databases, log_prefix, dry_run):
     '''
     Restore the given PostgreSQL databases from disk. The databases are supplied as a sequence of
     dicts, one dict describing each database as per the configuration schema. Use the given log
     prefix in any log entries. If this is a dry run, then don't actually restore anything.
     '''
-    if not databases:
-        logger.debug('{}: No PostgreSQL databases configured'.format(log_prefix))
-        return
-
     dry_run_label = ' (dry run; not actually restoring anything)' if dry_run else ''
 
     for database in databases:

tests/unit/commands/test_borgmatic.py

@@ -23,13 +23,10 @@ def test_run_configuration_runs_actions_for_each_repository():
 def test_run_configuration_executes_hooks_for_create_action():
     flexmock(module.borg_environment).should_receive('initialize')
     flexmock(module.command).should_receive('execute_hook').twice()
-    flexmock(module.postgresql).should_receive('dump_databases').once()
-    flexmock(module.mysql).should_receive('dump_databases').once()
+    flexmock(module.dispatch).should_receive('call_hooks').twice()
     flexmock(module.healthchecks).should_receive('ping_healthchecks').twice()
     flexmock(module.cronitor).should_receive('ping_cronitor').twice()
     flexmock(module.cronhub).should_receive('ping_cronhub').twice()
-    flexmock(module.postgresql).should_receive('remove_database_dumps').once()
-    flexmock(module.mysql).should_receive('remove_database_dumps').once()
     flexmock(module).should_receive('run_actions').and_return([])
     config = {'location': {'repositories': ['foo']}}
     arguments = {'global': flexmock(dry_run=False), 'create': flexmock()}
@@ -40,8 +37,7 @@ def test_run_configuration_executes_hooks_for_create_action():
 def test_run_configuration_logs_actions_error():
     flexmock(module.borg_environment).should_receive('initialize')
     flexmock(module.command).should_receive('execute_hook')
-    flexmock(module.postgresql).should_receive('dump_databases')
-    flexmock(module.mysql).should_receive('dump_databases')
+    flexmock(module.dispatch).should_receive('call_hooks')
     flexmock(module.healthchecks).should_receive('ping_healthchecks')
     flexmock(module.cronitor).should_receive('ping_cronitor')
     flexmock(module.cronhub).should_receive('ping_cronhub')
@@ -75,6 +71,10 @@ def test_run_configuration_logs_post_hook_error():
     flexmock(module.command).should_receive('execute_hook').and_return(None).and_raise(
         OSError
     ).and_return(None)
+    flexmock(module.dispatch).should_receive('call_hooks')
+    flexmock(module.healthchecks).should_receive('ping_healthchecks')
+    flexmock(module.cronitor).should_receive('ping_cronitor')
+    flexmock(module.cronhub).should_receive('ping_cronhub')
     expected_results = [flexmock()]
     flexmock(module).should_receive('make_error_log_records').and_return(expected_results)
     flexmock(module).should_receive('run_actions').and_return([])

tests/unit/hooks/test_dispatch.py

@@ -0,0 +1,68 @@
+import sys
+
+import pytest
+from flexmock import flexmock
+
+from borgmatic.hooks import dispatch as module
+
+
+def hook_function(config, log_prefix, thing, value):
+    '''
+    This test function gets mocked out below.
+    '''
+    pass
+
+
+def test_call_hook_invokes_module_function_with_arguments_and_returns_value():
+    hooks = {'super_hook': flexmock(), 'other_hook': flexmock()}
+    expected_return_value = flexmock()
+    test_module = sys.modules[__name__]
+    flexmock(module).HOOK_NAME_TO_MODULE = {'super_hook': test_module}
+    flexmock(test_module).should_receive('hook_function').with_args(
+        hooks['super_hook'], 'prefix', 55, value=66
+    ).and_return(expected_return_value).once()
+
+    return_value = module.call_hook('hook_function', hooks, 'prefix', 'super_hook', 55, value=66)
+
+    assert return_value == expected_return_value
+
+
+def test_call_hook_without_hook_config_skips_call():
+    hooks = {'other_hook': flexmock()}
+    test_module = sys.modules[__name__]
+    flexmock(module).HOOK_NAME_TO_MODULE = {'super_hook': test_module}
+    flexmock(test_module).should_receive('hook_function').never()
+
+    module.call_hook('hook_function', hooks, 'prefix', 'super_hook', 55, value=66)
+
+
+def test_call_hook_without_corresponding_module_raises():
+    hooks = {'super_hook': flexmock(), 'other_hook': flexmock()}
+    test_module = sys.modules[__name__]
+    flexmock(module).HOOK_NAME_TO_MODULE = {'other_hook': test_module}
+    flexmock(test_module).should_receive('hook_function').never()
+
+    with pytest.raises(ValueError):
+        module.call_hook('hook_function', hooks, 'prefix', 'super_hook', 55, value=66)
+
+
+def test_call_hooks_calls_each_hook_and_collects_return_values():
+    hooks = {'super_hook': flexmock(), 'other_hook': flexmock()}
+    expected_return_values = {'super_hook': flexmock(), 'other_hook': flexmock()}
+    flexmock(module).should_receive('call_hook').and_return(
+        expected_return_values['super_hook']
+    ).and_return(expected_return_values['other_hook'])
+
+    return_values = module.call_hooks('do_stuff', hooks, 'prefix', ('super_hook', 'other_hook'), 55)
+
+    assert return_values == expected_return_values
+
+
+def test_call_hooks_calls_skips_return_values_for_unconfigured_hooks():
+    hooks = {'super_hook': flexmock()}
+    expected_return_values = {'super_hook': flexmock()}
+    flexmock(module).should_receive('call_hook').and_return(expected_return_values['super_hook'])
+
+    return_values = module.call_hooks('do_stuff', hooks, 'prefix', ('super_hook', 'other_hook'), 55)
+
+    assert return_values == expected_return_values

tests/unit/hooks/test_dump.py

@@ -52,3 +52,50 @@ def test_remove_database_dumps_with_dry_run_skips_removal():
 
 def test_remove_database_dumps_without_databases_does_not_raise():
     module.remove_database_dumps('databases', [], 'SuperDB', 'test.yaml', dry_run=False)
+
+
+def test_convert_glob_patterns_to_borg_patterns_removes_leading_slash():
+    assert module.convert_glob_patterns_to_borg_patterns(('/etc/foo/bar',)) == ['sh:etc/foo/bar']
+
+
+def test_get_database_names_from_dumps_gets_names_from_filenames_matching_globs():
+    flexmock(module.glob).should_receive('glob').and_return(
+        ('databases/localhost/foo',)
+    ).and_return(('databases/localhost/bar',)).and_return(())
+
+    assert module.get_database_names_from_dumps(
+        ('databases/*/foo', 'databases/*/bar', 'databases/*/baz')
+    ) == ['foo', 'bar']
+
+
+def test_get_database_configurations_only_produces_named_databases():
+    databases = [
+        {'name': 'foo', 'hostname': 'example.org'},
+        {'name': 'bar', 'hostname': 'example.com'},
+        {'name': 'baz', 'hostname': 'example.org'},
+    ]
+
+    assert list(module.get_database_configurations(databases, ('foo', 'baz'))) == [
+        {'name': 'foo', 'hostname': 'example.org'},
+        {'name': 'baz', 'hostname': 'example.org'},
+    ]
+
+
+def test_get_database_configurations_matches_all_database():
+    databases = [
+        {'name': 'foo', 'hostname': 'example.org'},
+        {'name': 'all', 'hostname': 'example.com'},
+    ]
+
+    assert list(module.get_database_configurations(databases, ('foo', 'bar', 'baz'))) == [
+        {'name': 'foo', 'hostname': 'example.org'},
+        {'name': 'bar', 'hostname': 'example.com'},
+        {'name': 'baz', 'hostname': 'example.com'},
+    ]
+
+
+def test_get_database_configurations_with_unknown_database_name_raises():
+    databases = [{'name': 'foo', 'hostname': 'example.org'}]
+
+    with pytest.raises(ValueError):
+        list(module.get_database_configurations(databases, ('foo', 'bar')))

tests/unit/hooks/test_mysql.py

@@ -35,10 +35,6 @@ def test_dump_databases_with_dry_run_skips_mysqldump():
     module.dump_databases(databases, 'test.yaml', dry_run=True)
 
 
-def test_dump_databases_without_databases_does_not_raise():
-    module.dump_databases([], 'test.yaml', dry_run=False)
-
-
 def test_dump_databases_runs_mysqldump_with_hostname_and_port():
     databases = [{'name': 'foo', 'hostname': 'database.example.org', 'port': 5433}]
     output_file = flexmock()

tests/unit/hooks/test_postgresql.py

@@ -1,4 +1,3 @@
-import pytest
 from flexmock import flexmock
 
 from borgmatic.hooks import postgresql as module
@@ -40,10 +39,6 @@ def test_dump_databases_with_dry_run_skips_pg_dump():
     module.dump_databases(databases, 'test.yaml', dry_run=True)
 
 
-def test_dump_databases_without_databases_does_not_raise():
-    module.dump_databases([], 'test.yaml', dry_run=False)
-
-
 def test_dump_databases_runs_pg_dump_with_hostname_and_port():
     databases = [{'name': 'foo', 'hostname': 'database.example.org', 'port': 5433}]
     flexmock(module.dump).should_receive('make_database_dump_filename').and_return(
@@ -167,7 +162,7 @@ def test_make_database_dump_patterns_converts_names_to_glob_paths():
         'databases/*/foo'
     ).and_return('databases/*/bar')
 
-    assert module.make_database_dump_patterns(('foo', 'bar')) == [
+    assert module.make_database_dump_patterns(flexmock(), flexmock(), ('foo', 'bar')) == [
         'databases/*/foo',
         'databases/*/bar',
     ]
@@ -178,54 +173,7 @@ def test_make_database_dump_patterns_treats_empty_names_as_matching_all_database
         module.DUMP_PATH, '*', '*'
     ).and_return('databases/*/*')
 
-    assert module.make_database_dump_patterns(()) == ['databases/*/*']
-
-
-def test_convert_glob_patterns_to_borg_patterns_removes_leading_slash():
-    assert module.convert_glob_patterns_to_borg_patterns(('/etc/foo/bar',)) == ['sh:etc/foo/bar']
-
-
-def test_get_database_names_from_dumps_gets_names_from_filenames_matching_globs():
-    flexmock(module.glob).should_receive('glob').and_return(
-        ('databases/localhost/foo',)
-    ).and_return(('databases/localhost/bar',)).and_return(())
-
-    assert module.get_database_names_from_dumps(
-        ('databases/*/foo', 'databases/*/bar', 'databases/*/baz')
-    ) == ['foo', 'bar']
-
-
-def test_get_database_configurations_only_produces_named_databases():
-    databases = [
-        {'name': 'foo', 'hostname': 'example.org'},
-        {'name': 'bar', 'hostname': 'example.com'},
-        {'name': 'baz', 'hostname': 'example.org'},
-    ]
-
-    assert list(module.get_database_configurations(databases, ('foo', 'baz'))) == [
-        {'name': 'foo', 'hostname': 'example.org'},
-        {'name': 'baz', 'hostname': 'example.org'},
-    ]
-
-
-def test_get_database_configurations_matches_all_database():
-    databases = [
-        {'name': 'foo', 'hostname': 'example.org'},
-        {'name': 'all', 'hostname': 'example.com'},
-    ]
-
-    assert list(module.get_database_configurations(databases, ('foo', 'bar', 'baz'))) == [
-        {'name': 'foo', 'hostname': 'example.org'},
-        {'name': 'bar', 'hostname': 'example.com'},
-        {'name': 'baz', 'hostname': 'example.com'},
-    ]
-
-
-def test_get_database_configurations_with_unknown_database_name_raises():
-    databases = [{'name': 'foo', 'hostname': 'example.org'}]
-
-    with pytest.raises(ValueError):
-        list(module.get_database_configurations(databases, ('foo', 'bar')))
+    assert module.make_database_dump_patterns(flexmock(), flexmock(), ()) == ['databases/*/*']
 
 
 def test_restore_database_dumps_restores_each_database():
@@ -256,10 +204,6 @@ def test_restore_database_dumps_restores_each_database():
     module.restore_database_dumps(databases, 'test.yaml', dry_run=False)
 
 
-def test_restore_database_dumps_without_databases_does_not_raise():
-    module.restore_database_dumps({}, 'test.yaml', dry_run=False)
-
-
 def test_restore_database_dumps_runs_pg_restore_with_hostname_and_port():
     databases = [{'name': 'foo', 'hostname': 'database.example.org', 'port': 5433}]
     flexmock(module.dump).should_receive('make_database_dump_filename').and_return(

tests/unit/test_execute.py

@@ -47,6 +47,7 @@ def test_execute_command_calls_full_command():
     flexmock(module.os, environ={'a': 'b'})
     flexmock(module.subprocess).should_receive('Popen').with_args(
         full_command,
+        stdin=None,
         stdout=module.subprocess.PIPE,
         stderr=module.subprocess.STDOUT,
         shell=False,
@@ -66,6 +67,7 @@ def test_execute_command_calls_full_command_with_output_file():
     flexmock(module.os, environ={'a': 'b'})
     flexmock(module.subprocess).should_receive('Popen').with_args(
         full_command,
+        stdin=None,
         stdout=output_file,
         stderr=module.subprocess.PIPE,
         shell=False,
@@ -79,11 +81,32 @@ def test_execute_command_calls_full_command_with_output_file():
     assert output is None
 
 
+def test_execute_command_calls_full_command_with_input_file():
+    full_command = ['foo', 'bar']
+    input_file = flexmock()
+    flexmock(module.os, environ={'a': 'b'})
+    flexmock(module.subprocess).should_receive('Popen').with_args(
+        full_command,
+        stdin=input_file,
+        stdout=module.subprocess.PIPE,
+        stderr=module.subprocess.STDOUT,
+        shell=False,
+        env=None,
+        cwd=None,
+    ).and_return(flexmock(stdout=None)).once()
+    flexmock(module).should_receive('log_output')
+
+    output = module.execute_command(full_command, input_file=input_file)
+
+    assert output is None
+
+
 def test_execute_command_calls_full_command_with_shell():
     full_command = ['foo', 'bar']
     flexmock(module.os, environ={'a': 'b'})
     flexmock(module.subprocess).should_receive('Popen').with_args(
         full_command,
+        stdin=None,
         stdout=module.subprocess.PIPE,
         stderr=module.subprocess.STDOUT,
         shell=True,
@@ -102,6 +125,7 @@ def test_execute_command_calls_full_command_with_extra_environment():
     flexmock(module.os, environ={'a': 'b'})
     flexmock(module.subprocess).should_receive('Popen').with_args(
         full_command,
+        stdin=None,
         stdout=module.subprocess.PIPE,
         stderr=module.subprocess.STDOUT,
         shell=False,
@@ -120,6 +144,7 @@ def test_execute_command_calls_full_command_with_working_directory():
     flexmock(module.os, environ={'a': 'b'})
     flexmock(module.subprocess).should_receive('Popen').with_args(
         full_command,
+        stdin=None,
         stdout=module.subprocess.PIPE,
         stderr=module.subprocess.STDOUT,
         shell=False,