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Merge pull request #267 from matrix-org/markjh/missing_requirements

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Print an example "pip install" line for a missing requirement
This commit is contained in:
Mark Haines 2015-09-18 18:52:08 +01:00
commit 0b5c9adeb5
2 changed files with 29 additions and 11 deletions
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17
synapse/app/homeserver.py
View File

@ -16,10 +16,23 @@
import sys import sys
sys.dont_write_bytecode = True sys.dont_write_bytecode = True
from synapse.python_dependencies import check_requirements, DEPENDENCY_LINKS from synapse.python_dependencies import (
check_requirements, DEPENDENCY_LINKS, MissingRequirementError
)
if __name__ == '__main__': if __name__ == '__main__':
check_requirements() try:
check_requirements()
except MissingRequirementError as e:
message = "\n".join([
"Missing Requirement: %s" % (e.message,),
"To install run:",
" pip install --upgrade --force \"%s\"" % (e.dependency,),
"",
])
sys.stderr.writelines(message)
sys.exit(1)
from synapse.storage.engines import create_engine, IncorrectDatabaseSetup from synapse.storage.engines import create_engine, IncorrectDatabaseSetup
from synapse.storage import ( from synapse.storage import (

23
synapse/python_dependencies.py
View File

@ -18,18 +18,18 @@ from distutils.version import LooseVersion
logger = logging.getLogger(__name__) logger = logging.getLogger(__name__)
REQUIREMENTS = { REQUIREMENTS = {
"frozendict>=0.4": ["frozendict"],
"unpaddedbase64>=1.0.1": ["unpaddedbase64>=1.0.1"], "unpaddedbase64>=1.0.1": ["unpaddedbase64>=1.0.1"],
"canonicaljson>=1.0.0": ["canonicaljson>=1.0.0"], "canonicaljson>=1.0.0": ["canonicaljson>=1.0.0"],
"signedjson>=1.0.0": ["signedjson>=1.0.0"], "signedjson>=1.0.0": ["signedjson>=1.0.0"],
"Twisted>=15.1.0": ["twisted>=15.1.0"], "pynacl>=0.3.0": ["nacl>=0.3.0", "nacl.bindings"],
"service_identity>=1.0.0": ["service_identity>=1.0.0"], "service_identity>=1.0.0": ["service_identity>=1.0.0"],
"Twisted>=15.1.0": ["twisted>=15.1.0"],
"pyopenssl>=0.14": ["OpenSSL>=0.14"], "pyopenssl>=0.14": ["OpenSSL>=0.14"],
"pyyaml": ["yaml"], "pyyaml": ["yaml"],
"pyasn1": ["pyasn1"], "pyasn1": ["pyasn1"],
"pynacl>=0.3.0": ["nacl>=0.3.0"],
"daemonize": ["daemonize"], "daemonize": ["daemonize"],
"py-bcrypt": ["bcrypt"], "py-bcrypt": ["bcrypt"],
"frozendict>=0.4": ["frozendict"],
"pillow": ["PIL"], "pillow": ["PIL"],
"pydenticon": ["pydenticon"], "pydenticon": ["pydenticon"],
"ujson": ["ujson"], "ujson": ["ujson"],
@ -60,7 +60,10 @@ DEPENDENCY_LINKS = {
class MissingRequirementError(Exception): class MissingRequirementError(Exception):
pass def __init__(self, message, module_name, dependency):
super(MissingRequirementError, self).__init__(message)
self.module_name = module_name
self.dependency = dependency
def check_requirements(config=None): def check_requirements(config=None):
@ -88,7 +91,7 @@ def check_requirements(config=None):
) )
raise MissingRequirementError( raise MissingRequirementError(
"Can't import %r which is part of %r" "Can't import %r which is part of %r"
% (module_name, dependency) % (module_name, dependency), module_name, dependency
) )
version = getattr(module, "__version__", None) version = getattr(module, "__version__", None)
file_path = getattr(module, "__file__", None) file_path = getattr(module, "__file__", None)
@ -101,23 +104,25 @@ def check_requirements(config=None):
if version is None: if version is None:
raise MissingRequirementError( raise MissingRequirementError(
"Version of %r isn't set as __version__ of module %r" "Version of %r isn't set as __version__ of module %r"
% (dependency, module_name) % (dependency, module_name), module_name, dependency
) )
if LooseVersion(version) < LooseVersion(required_version): if LooseVersion(version) < LooseVersion(required_version):
raise MissingRequirementError( raise MissingRequirementError(
"Version of %r in %r is too old. %r < %r" "Version of %r in %r is too old. %r < %r"
% (dependency, file_path, version, required_version) % (dependency, file_path, version, required_version),
module_name, dependency
) )
elif version_test == "==": elif version_test == "==":
if version is None: if version is None:
raise MissingRequirementError( raise MissingRequirementError(
"Version of %r isn't set as __version__ of module %r" "Version of %r isn't set as __version__ of module %r"
% (dependency, module_name) % (dependency, module_name), module_name, dependency
) )
if LooseVersion(version) != LooseVersion(required_version): if LooseVersion(version) != LooseVersion(required_version):
raise MissingRequirementError( raise MissingRequirementError(
"Unexpected version of %r in %r. %r != %r" "Unexpected version of %r in %r. %r != %r"
% (dependency, file_path, version, required_version) % (dependency, file_path, version, required_version),
module_name, dependency
) )