Remove support for multiple configurations in one file

readthedocs/config/config.py

@@ -36,7 +36,6 @@
     'ConfigError',
     'ConfigOptionNotSupportedError',
     'InvalidConfig',
-    'ProjectConfig',
 )
 
 ALL = 'all'
@@ -110,12 +109,10 @@ class InvalidConfig(ConfigError):
 
     message_template = 'Invalid "{key}": {error}'
 
-    def __init__(self, key, code, error_message, source_file=None,
-                 source_position=None):
+    def __init__(self, key, code, error_message, source_file=None):
         self.key = key
         self.code = code
         self.source_file = source_file
-        self.source_position = source_position
         message = self.message_template.format(
             key=key,
             code=code,
@@ -144,11 +141,10 @@ class BuildConfigBase(object):
 
     version = None
 
-    def __init__(self, env_config, raw_config, source_file, source_position):
+    def __init__(self, env_config, raw_config, source_file):
         self.env_config = env_config
         self.raw_config = raw_config
         self.source_file = source_file
-        self.source_position = source_position
         if os.path.isdir(self.source_file):
             self.base_path = self.source_file
         else:
@@ -160,10 +156,7 @@ def __init__(self, env_config, raw_config, source_file, source_position):
     def error(self, key, message, code):
         """Raise an error related to ``key``."""
         if not os.path.isdir(self.source_file):
-            source = '{file} [{pos}]'.format(
-                file=os.path.relpath(self.source_file, self.base_path),
-                pos=self.source_position,
-            )
+            source = os.path.relpath(self.source_file, self.base_path)
             error_message = '{source}: {message}'.format(
                 source=source,
                 message=message,
@@ -175,7 +168,6 @@ def error(self, key, message, code):
             code=code,
             error_message=error_message,
             source_file=self.source_file,
-            source_position=self.source_position,
         )
 
     @contextmanager
@@ -189,7 +181,6 @@ def catch_validation_error(self, key):
                 code=error.code,
                 error_message=str(error),
                 source_file=self.source_file,
-                source_position=self.source_position,
             )
 
     def pop(self, name, container, default, raise_ex):
@@ -1043,16 +1034,6 @@ def submodules(self):
         return Submodules(**self._config['submodules'])
 
 
-class ProjectConfig(list):
-
-    """Wrapper for multiple build configs."""
-
-    def validate(self):
-        """Validates each configuration build."""
-        for build in self:
-            build.validate()
-
-
 def load(path, env_config):
     """
     Load a project configuration and the top-most build config for a given path.
@@ -1068,10 +1049,9 @@ def load(path, env_config):
             'No configuration file found',
             code=CONFIG_REQUIRED
         )
-    build_configs = []
     with open(filename, 'r') as configuration_file:
         try:
-            configs = parse(configuration_file.read())
+            config = parse(configuration_file.read())
         except ParseError as error:
             raise ConfigError(
                 'Parse error in {filename}: {message}'.format(
@@ -1080,23 +1060,19 @@ def load(path, env_config):
                 ),
                 code=CONFIG_SYNTAX_INVALID,
             )
-        for i, config in enumerate(configs):
-            allow_v2 = env_config.get('allow_v2')
-            if allow_v2:
-                version = config.get('version', 1)
-            else:
-                version = 1
-            build_config = get_configuration_class(version)(
-                env_config,
-                config,
-                source_file=filename,
-                source_position=i,
-            )
-            build_configs.append(build_config)
+        allow_v2 = env_config.get('allow_v2')
+        if allow_v2:
+            version = config.get('version', 1)
+        else:
+            version = 1
+        build_config = get_configuration_class(version)(
+            env_config,
+            config,
+            source_file=filename,
+        )
 
-    project_config = ProjectConfig(build_configs)
-    project_config.validate()
-    return project_config
+    build_config.validate()
+    return build_config
 
 
 def get_configuration_class(version):

readthedocs/config/parser.py

@@ -17,18 +17,17 @@ class ParseError(Exception):
 
 def parse(stream):
     """
-    Take file-like object and return a list of project configurations.
+    Take file-like object and return a project configuration.
 
-    The files need be valid YAML and only contain mappings as documents.
+    The file need be valid YAML and only contain mappings as document.
     Everything else raises a ``ParseError``.
     """
     try:
-        configs = list(yaml.safe_load_all(stream))
+        config = yaml.safe_load(stream)
     except yaml.YAMLError as error:
         raise ParseError('YAML: {message}'.format(message=error))
-    if not configs:
+    if not isinstance(config, dict):
+        raise ParseError('Expected mapping')
+    if not config:
         raise ParseError('Empty config')
-    for config in configs:
-        if not isinstance(config, dict):
-            raise ParseError('Expected mapping')
-    return configs
+    return config

readthedocs/config/tests/test_config.py

@@ -17,7 +17,6 @@
     ConfigError,
     ConfigOptionNotSupportedError,
     InvalidConfig,
-    ProjectConfig,
     load,
 )
 from readthedocs.config.config import (
@@ -81,13 +80,11 @@
 }
 
 
-def get_build_config(config, env_config=None, source_file='readthedocs.yml',
-                     source_position=0):
+def get_build_config(config, env_config=None, source_file='readthedocs.yml'):
     return BuildConfigV1(
         env_config or {},
         config,
         source_file=source_file,
-        source_position=source_position,
     )
 
 
@@ -131,10 +128,7 @@ def test_load_empty_config_file(tmpdir):
 def test_minimal_config(tmpdir):
     apply_fs(tmpdir, minimal_config_dir)
     base = str(tmpdir)
-    config = load(base, env_config)
-    assert isinstance(config, ProjectConfig)
-    assert len(config) == 1
-    build = config[0]
+    build = load(base, env_config)
     assert isinstance(build, BuildConfigV1)
 
 
@@ -145,10 +139,7 @@ def test_load_version1(tmpdir):
         ''')
     })
     base = str(tmpdir)
-    config = load(base, get_env_config({'allow_v2': True}))
-    assert isinstance(config, ProjectConfig)
-    assert len(config) == 1
-    build = config[0]
+    build = load(base, get_env_config({'allow_v2': True}))
     assert isinstance(build, BuildConfigV1)
 
 
@@ -159,10 +150,7 @@ def test_load_version2(tmpdir):
         ''')
     })
     base = str(tmpdir)
-    config = load(base, get_env_config({'allow_v2': True}))
-    assert isinstance(config, ProjectConfig)
-    assert len(config) == 1
-    build = config[0]
+    build = load(base, get_env_config({'allow_v2': True}))
     assert isinstance(build, BuildConfigV2)
 
 
@@ -183,31 +171,18 @@ def test_yaml_extension(tmpdir):
     apply_fs(tmpdir, yaml_extension_config_dir)
     base = str(tmpdir)
     config = load(base, env_config)
-    assert len(config) == 1
+    assert isinstance(config, BuildConfigV1)
 
 
 def test_build_config_has_source_file(tmpdir):
     base = str(apply_fs(tmpdir, minimal_config_dir))
-    build = load(base, env_config)[0]
+    build = load(base, env_config)
     assert build.source_file == os.path.join(base, 'readthedocs.yml')
-    assert build.source_position == 0
-
-
-def test_build_config_has_source_position(tmpdir):
-    base = str(apply_fs(tmpdir, multiple_config_dir))
-    builds = load(base, env_config)
-    assert len(builds) == 2
-    first, second = filter(
-        lambda b: not b.source_file.endswith('nested/readthedocs.yml'),
-        builds,
-    )
-    assert first.source_position == 0
-    assert second.source_position == 1
 
 
 def test_build_config_has_list_with_single_empty_value(tmpdir):
     base = str(apply_fs(tmpdir, config_with_explicit_empty_list))
-    build = load(base, env_config)[0]
+    build = load(base, env_config)
     assert isinstance(build, BuildConfigV1)
     assert build.formats == []
 
@@ -217,7 +192,6 @@ def test_config_requires_name():
         {'output_base': ''},
         {},
         source_file='readthedocs.yml',
-        source_position=0,
     )
     with raises(InvalidConfig) as excinfo:
         build.validate()
@@ -230,7 +204,6 @@ def test_build_requires_valid_name():
         {'output_base': ''},
         {'name': 'with/slashes'},
         source_file='readthedocs.yml',
-        source_position=0,
     )
     with raises(InvalidConfig) as excinfo:
         build.validate()
@@ -554,7 +527,6 @@ def test_valid_build_config():
         env_config,
         minimal_config,
         source_file='readthedocs.yml',
-        source_position=0,
     )
     build.validate()
     assert build.name == 'docs'
@@ -576,7 +548,6 @@ def it_validates_to_abspath(tmpdir):
                 get_env_config(),
                 {'base': '../docs'},
                 source_file=source_file,
-                source_position=0,
             )
             build.validate()
             assert build.base == str(tmpdir.join('docs'))
@@ -597,7 +568,6 @@ def it_fails_if_base_is_not_a_string(tmpdir):
                 get_env_config(),
                 {'base': 1},
                 source_file=str(tmpdir.join('readthedocs.yml')),
-                source_position=0,
             )
             with raises(InvalidConfig) as excinfo:
                 build.validate()
@@ -610,7 +580,6 @@ def it_fails_if_base_does_not_exist(tmpdir):
             get_env_config(),
             {'base': 'docs'},
             source_file=str(tmpdir.join('readthedocs.yml')),
-            source_position=0,
         )
         with raises(InvalidConfig) as excinfo:
             build.validate()
@@ -626,7 +595,6 @@ def it_fails_if_build_is_invalid_option(tmpdir):
             get_env_config(),
             {'build': {'image': 3.0}},
             source_file=str(tmpdir.join('readthedocs.yml')),
-            source_position=0,
         )
         with raises(InvalidConfig) as excinfo:
             build.validate()
@@ -642,7 +610,6 @@ def it_fails_on_python_validation(tmpdir):
                 'python': {'version': '3.3'},
             },
             source_file=str(tmpdir.join('readthedocs.yml')),
-            source_position=0,
         )
         build.validate_build()
         with raises(InvalidConfig) as excinfo:
@@ -659,7 +626,6 @@ def it_works_on_python_validation(tmpdir):
                 'python': {'version': '3.3'},
             },
             source_file=str(tmpdir.join('readthedocs.yml')),
-            source_position=0,
         )
         build.validate_build()
         build.validate_python()
@@ -670,7 +636,6 @@ def it_works(tmpdir):
             get_env_config(),
             {'build': {'image': 'latest'}},
             source_file=str(tmpdir.join('readthedocs.yml')),
-            source_position=0,
         )
         build.validate()
         assert build.build.image == 'readthedocs/build:latest'
@@ -681,7 +646,6 @@ def default(tmpdir):
             get_env_config(),
             {},
             source_file=str(tmpdir.join('readthedocs.yml')),
-            source_position=0,
         )
         build.validate()
         assert build.build.image == 'readthedocs/build:2.0'
@@ -697,7 +661,6 @@ def it_priorities_image_from_env_config(tmpdir, image):
             get_env_config({'defaults': defaults}),
             {'build': {'image': 'latest'}},
             source_file=str(tmpdir.join('readthedocs.yml')),
-            source_position=0,
         )
         build.validate()
         assert build.build.image == image
@@ -787,7 +750,6 @@ def test_build_validate_calls_all_subvalidators(tmpdir):
         {},
         {},
         source_file=str(tmpdir.join('readthedocs.yml')),
-        source_position=0,
     )
     with patch.multiple(
             BuildConfigV1,
@@ -803,20 +765,6 @@ def test_build_validate_calls_all_subvalidators(tmpdir):
         BuildConfigV1.validate_output_base.assert_called_with()
 
 
-def test_validate_project_config():
-    with patch.object(BuildConfigV1, 'validate') as build_validate:
-        project = ProjectConfig([
-            BuildConfigV1(
-                env_config,
-                minimal_config,
-                source_file='readthedocs.yml',
-                source_position=0,
-            ),
-        ])
-        project.validate()
-        assert build_validate.call_count == 1
-
-
 def test_load_calls_validate(tmpdir):
     apply_fs(tmpdir, minimal_config_dir)
     base = str(tmpdir)
@@ -843,13 +791,12 @@ def test_config_filenames_regex(correct_config_filename):
 
 class TestBuildConfigV2(object):
 
-    def get_build_config(self, config, env_config=None,
-                         source_file='readthedocs.yml', source_position=0):
+    def get_build_config(
+            self, config, env_config=None, source_file='readthedocs.yml'):
         return BuildConfigV2(
             env_config or {},
             config,
             source_file=source_file,
-            source_position=source_position,
         )
 
     def test_version(self):