diff options
| -rwxr-xr-x | synapse/app/homeserver.py | 5 | ||||
| -rw-r--r-- | synapse/python_dependencies.py | 80 |
2 files changed, 85 insertions, 0 deletions
diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py index fba43aa2bf..43b5c26144 100755 --- a/synapse/app/homeserver.py +++ b/synapse/app/homeserver.py @@ -18,6 +18,8 @@ from synapse.storage import prepare_database, UpgradeDatabaseException from synapse.server import HomeServer +from synapse.python_dependencies import check_requirements + from twisted.internet import reactor from twisted.enterprise import adbapi from twisted.web.resource import Resource @@ -200,6 +202,8 @@ def setup(): config.setup_logging() + check_requirements() + logger.info("Server hostname: %s", config.server_name) logger.info("Server version: %s", synapse.__version__) @@ -280,6 +284,7 @@ def run(): def main(): with LoggingContext("main"): + check_requirements() setup() diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py new file mode 100644 index 0000000000..b1fae991e0 --- /dev/null +++ b/synapse/python_dependencies.py @@ -0,0 +1,80 @@ +import logging +from distutils.version import LooseVersion + +logger = logging.getLogger(__name__) + +REQUIREMENTS = { + "syutil==0.0.2": ["syutil"], + "matrix_angular_sdk==0.6.0": ["syweb==0.6.0"], + "Twisted>=14.0.0": ["twisted>=14.0.0"], + "service_identity>=1.0.0": ["service_identity>=1.0.0"], + "pyopenssl>=0.14": ["OpenSSL>=0.14"], + "pyyaml": ["yaml"], + "pyasn1": ["pyasn1"], + "pynacl": ["nacl"], + "daemonize": ["daemonize"], + "py-bcrypt": ["bcrypt"], + "frozendict>=0.4": ["frozendict"], + "pillow": ["PIL"], +} + + +class MissingRequirementError(Exception): + pass + + +def check_requirements(): + """Checks that all the modules needed by synapse have been correctly + installed and are at the correct version""" + for dependency, module_requirements in REQUIREMENTS.items(): + for module_requirement in module_requirements: + if ">=" in module_requirement: + module_name, required_version = module_requirement.split(">=") + version_test = ">=" + elif "==" in module_requirement: + module_name, required_version = module_requirement.split("==") + version_test = "==" + else: + module_name = module_requirement + version_test = None + + try: + module = __import__(module_name) + except ImportError: + logging.exception( + "Can't import %r which is part of %r", + module_name, dependency + ) + raise MissingRequirementError( + "Can't import %r which is part of %r" + % (module_name, dependency) + ) + version = getattr(module, "__version__", None) + file_path = getattr(module, "__file__", None) + logger.info( + "Using %r version %r from %r to satisfy %r", + module_name, version, file_path, dependency + ) + + if version_test == ">=": + if version is None: + raise MissingRequirementError( + "Version of %r isn't set as __version__ of module %r" + % (dependency, module_name) + ) + if LooseVersion(version) < LooseVersion(required_version): + raise MissingRequirementError( + "Version of %r in %r is too old. %r < %r" + % (dependency, file_path, version, required_version) + ) + elif version_test == "==": + if version is None: + raise MissingRequirementError( + "Version of %r isn't set as __version__ of module %r" + % (dependency, module_name) + ) + if LooseVersion(version) != LooseVersion(required_version): + raise MissingRequirementError( + "Unexpected version of %r in %r. %r != %r" + % (dependency, file_path, version, required_version) + ) |