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![Andrew Morgan](/assets/img/avatar_default.png)
Fixes https://github.com/matrix-org/synapse/issues/5431 `jinja2` was being imported even when it wasn't strictly necessary. This made it required to run Synapse, even if the functionality that required it wasn't enabled. This was causing new Synapse installations to crash on startup. Email modules are now required.
198 lines
6.3 KiB
Python
198 lines
6.3 KiB
Python
# Copyright 2015, 2016 OpenMarket Ltd
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# Copyright 2017 Vector Creations Ltd
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# Copyright 2018 New Vector Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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from pkg_resources import (
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DistributionNotFound,
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Requirement,
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VersionConflict,
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get_provider,
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)
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logger = logging.getLogger(__name__)
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# REQUIREMENTS is a simple list of requirement specifiers[1], and must be
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# installed. It is passed to setup() as install_requires in setup.py.
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#
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# CONDITIONAL_REQUIREMENTS is the optional dependencies, represented as a dict
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# of lists. The dict key is the optional dependency name and can be passed to
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# pip when installing. The list is a series of requirement specifiers[1] to be
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# installed when that optional dependency requirement is specified. It is passed
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# to setup() as extras_require in setup.py
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#
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# [1] https://pip.pypa.io/en/stable/reference/pip_install/#requirement-specifiers.
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REQUIREMENTS = [
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"jsonschema>=2.5.1",
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"frozendict>=1",
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"unpaddedbase64>=1.1.0",
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"canonicaljson>=1.1.3",
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"signedjson>=1.0.0",
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"pynacl>=1.2.1",
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"idna>=2.5",
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# validating SSL certs for IP addresses requires service_identity 18.1.
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"service_identity>=18.1.0",
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# our logcontext handling relies on the ability to cancel inlineCallbacks
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# (https://twistedmatrix.com/trac/ticket/4632) which landed in Twisted 18.7.
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"Twisted>=18.7.0",
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"treq>=15.1",
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# Twisted has required pyopenssl 16.0 since about Twisted 16.6.
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"pyopenssl>=16.0.0",
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"pyyaml>=3.11",
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"pyasn1>=0.1.9",
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"pyasn1-modules>=0.0.7",
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"daemonize>=2.3.1",
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"bcrypt>=3.1.0",
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"pillow>=4.3.0",
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"sortedcontainers>=1.4.4",
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"psutil>=2.0.0",
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"pymacaroons>=0.13.0",
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"msgpack>=0.5.2",
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"phonenumbers>=8.2.0",
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"six>=1.10",
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# prometheus_client 0.4.0 changed the format of counter metrics
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# (cf https://github.com/matrix-org/synapse/issues/4001)
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"prometheus_client>=0.0.18,<0.4.0",
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# we use attr.s(slots), which arrived in 16.0.0
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# Twisted 18.7.0 requires attrs>=17.4.0
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"attrs>=17.4.0",
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"netaddr>=0.7.18",
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"Jinja2>=2.9",
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"bleach>=1.4.3",
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]
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CONDITIONAL_REQUIREMENTS = {
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"matrix-synapse-ldap3": ["matrix-synapse-ldap3>=0.1"],
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# we use execute_batch, which arrived in psycopg 2.7.
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"postgres": ["psycopg2>=2.7"],
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# ConsentResource uses select_autoescape, which arrived in jinja 2.9
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"resources.consent": ["Jinja2>=2.9"],
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# ACME support is required to provision TLS certificates from authorities
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# that use the protocol, such as Let's Encrypt.
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"acme": [
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"txacme>=0.9.2",
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# txacme depends on eliot. Eliot 1.8.0 is incompatible with
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# python 3.5.2, as per https://github.com/itamarst/eliot/issues/418
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'eliot<1.8.0;python_version<"3.5.3"',
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],
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"saml2": ["pysaml2>=4.5.0"],
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"systemd": ["systemd-python>=231"],
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"url_preview": ["lxml>=3.5.0"],
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"test": ["mock>=2.0", "parameterized"],
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"sentry": ["sentry-sdk>=0.7.2"],
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}
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ALL_OPTIONAL_REQUIREMENTS = set()
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for name, optional_deps in CONDITIONAL_REQUIREMENTS.items():
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# Exclude systemd as it's a system-based requirement.
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if name not in ["systemd"]:
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ALL_OPTIONAL_REQUIREMENTS = set(optional_deps) | ALL_OPTIONAL_REQUIREMENTS
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def list_requirements():
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return list(set(REQUIREMENTS) | ALL_OPTIONAL_REQUIREMENTS)
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class DependencyException(Exception):
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@property
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def message(self):
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return "\n".join(
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[
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"Missing Requirements: %s" % (", ".join(self.dependencies),),
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"To install run:",
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" pip install --upgrade --force %s" % (" ".join(self.dependencies),),
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"",
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]
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)
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@property
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def dependencies(self):
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for i in self.args[0]:
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yield "'" + i + "'"
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def check_requirements(for_feature=None):
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deps_needed = []
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errors = []
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if for_feature:
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reqs = CONDITIONAL_REQUIREMENTS[for_feature]
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else:
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reqs = REQUIREMENTS
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for dependency in reqs:
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try:
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_check_requirement(dependency)
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except VersionConflict as e:
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deps_needed.append(dependency)
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errors.append(
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"Needed %s, got %s==%s"
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% (dependency, e.dist.project_name, e.dist.version)
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)
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except DistributionNotFound:
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deps_needed.append(dependency)
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errors.append("Needed %s but it was not installed" % (dependency,))
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if not for_feature:
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# Check the optional dependencies are up to date. We allow them to not be
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# installed.
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OPTS = sum(CONDITIONAL_REQUIREMENTS.values(), [])
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for dependency in OPTS:
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try:
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_check_requirement(dependency)
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except VersionConflict as e:
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deps_needed.append(dependency)
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errors.append(
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"Needed optional %s, got %s==%s"
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% (dependency, e.dist.project_name, e.dist.version)
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)
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except DistributionNotFound:
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# If it's not found, we don't care
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pass
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if deps_needed:
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for e in errors:
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logging.error(e)
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raise DependencyException(deps_needed)
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def _check_requirement(dependency_string):
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"""Parses a dependency string, and checks if the specified requirement is installed
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Raises:
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VersionConflict if the requirement is installed, but with the the wrong version
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DistributionNotFound if nothing is found to provide the requirement
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"""
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req = Requirement.parse(dependency_string)
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# first check if the markers specify that this requirement needs installing
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if req.marker is not None and not req.marker.evaluate():
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# not required for this environment
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return
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get_provider(req)
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if __name__ == "__main__":
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import sys
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sys.stdout.writelines(req + "\n" for req in list_requirements())
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