mirror of
https://github.com/element-hq/synapse
synced 2024-07-02 15:53:30 +00:00
Fix up create_resource_tree
This commit is contained in:
Erik Johnston
parent
f7f07dc517
commit
c42ed47660
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@ -145,109 +145,6 @@ class SynapseHomeServer(HomeServer):
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**self.db_config.get("args", {})
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)
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def create_resource_tree(self, redirect_root_to_web_client):
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"""Create the resource tree for this Home Server.
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This in unduly complicated because Twisted does not support putting
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child resources more than 1 level deep at a time.
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Args:
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web_client (bool): True to enable the web client.
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redirect_root_to_web_client (bool): True to redirect '/' to the
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location of the web client. This does nothing if web_client is not
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True.
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"""
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config = self.get_config()
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web_client = config.web_client
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# list containing (path_str, Resource) e.g:
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# [ ("/aaa/bbb/cc", Resource1), ("/aaa/dummy", Resource2) ]
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desired_tree = [
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(CLIENT_PREFIX, self.get_resource_for_client()),
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(CLIENT_V2_ALPHA_PREFIX, self.get_resource_for_client_v2_alpha()),
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(FEDERATION_PREFIX, self.get_resource_for_federation()),
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(CONTENT_REPO_PREFIX, self.get_resource_for_content_repo()),
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(SERVER_KEY_PREFIX, self.get_resource_for_server_key()),
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(SERVER_KEY_V2_PREFIX, self.get_resource_for_server_key_v2()),
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(MEDIA_PREFIX, self.get_resource_for_media_repository()),
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(STATIC_PREFIX, self.get_resource_for_static_content()),
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]
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if web_client:
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logger.info("Adding the web client.")
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desired_tree.append((WEB_CLIENT_PREFIX,
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self.get_resource_for_web_client()))
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if web_client and redirect_root_to_web_client:
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self.root_resource = RootRedirect(WEB_CLIENT_PREFIX)
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else:
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self.root_resource = Resource()
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metrics_resource = self.get_resource_for_metrics()
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if config.metrics_port is None and metrics_resource is not None:
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desired_tree.append((METRICS_PREFIX, metrics_resource))
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# ideally we'd just use getChild and putChild but getChild doesn't work
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# unless you give it a Request object IN ADDITION to the name :/ So
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# instead, we'll store a copy of this mapping so we can actually add
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# extra resources to existing nodes. See self._resource_id for the key.
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resource_mappings = {}
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for full_path, res in desired_tree:
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logger.info("Attaching %s to path %s", res, full_path)
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last_resource = self.root_resource
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for path_seg in full_path.split('/')[1:-1]:
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if path_seg not in last_resource.listNames():
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# resource doesn't exist, so make a "dummy resource"
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child_resource = Resource()
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last_resource.putChild(path_seg, child_resource)
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res_id = self._resource_id(last_resource, path_seg)
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resource_mappings[res_id] = child_resource
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last_resource = child_resource
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else:
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# we have an existing Resource, use that instead.
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res_id = self._resource_id(last_resource, path_seg)
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last_resource = resource_mappings[res_id]
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# ===========================
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# now attach the actual desired resource
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last_path_seg = full_path.split('/')[-1]
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# if there is already a resource here, thieve its children and
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# replace it
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res_id = self._resource_id(last_resource, last_path_seg)
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if res_id in resource_mappings:
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# there is a dummy resource at this path already, which needs
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# to be replaced with the desired resource.
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existing_dummy_resource = resource_mappings[res_id]
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for child_name in existing_dummy_resource.listNames():
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child_res_id = self._resource_id(existing_dummy_resource,
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child_name)
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child_resource = resource_mappings[child_res_id]
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# steal the children
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res.putChild(child_name, child_resource)
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# finally, insert the desired resource in the right place
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last_resource.putChild(last_path_seg, res)
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res_id = self._resource_id(last_resource, last_path_seg)
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resource_mappings[res_id] = res
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return self.root_resource
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def _resource_id(self, resource, path_seg):
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"""Construct an arbitrary resource ID so you can retrieve the mapping
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later.
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If you want to represent resource A putChild resource B with path C,
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the mapping should looks like _resource_id(A,C) = B.
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Args:
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resource (Resource): The *parent* Resource
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path_seg (str): The name of the child Resource to be attached.
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Returns:
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str: A unique string which can be a key to the child Resource.
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"""
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return "%s-%s" % (resource, path_seg)
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def start_listening(self):
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config = self.get_config()
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@ -447,7 +344,26 @@ def setup(config_options):
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database_engine=database_engine,
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)
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hs.create_resource_tree(
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resources = {
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CLIENT_PREFIX: hs.get_resource_for_client(),
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CLIENT_V2_ALPHA_PREFIX: hs.get_resource_for_client_v2_alpha(),
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FEDERATION_PREFIX: hs.get_resource_for_federation(),
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CONTENT_REPO_PREFIX: hs.get_resource_for_content_repo(),
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SERVER_KEY_PREFIX: hs.get_resource_for_server_key(),
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SERVER_KEY_V2_PREFIX: hs.get_resource_for_server_key_v2(),
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MEDIA_PREFIX: hs.get_resource_for_media_repository(),
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STATIC_PREFIX: hs.get_resource_for_static_content(),
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}
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if config.web_client:
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resources[WEB_CLIENT_PREFIX] = hs.get_resource_for_web_client()
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metrics_resource = hs.get_resource_for_metrics()
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if config.metrics_port is None and metrics_resource is not None:
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resources[METRICS_PREFIX] = metrics_resource
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hs.root_resource = create_resource_tree(
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resources,
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redirect_root_to_web_client=True,
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)
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@ -525,6 +441,86 @@ class SynapseSite(Site):
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self.access_logger.info(line)
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def create_resource_tree(desired_tree, redirect_root_to_web_client=True):
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"""Create the resource tree for this Home Server.
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This in unduly complicated because Twisted does not support putting
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child resources more than 1 level deep at a time.
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Args:
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web_client (bool): True to enable the web client.
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redirect_root_to_web_client (bool): True to redirect '/' to the
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location of the web client. This does nothing if web_client is not
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True.
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"""
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if redirect_root_to_web_client and WEB_CLIENT_PREFIX in desired_tree:
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root_resource = RootRedirect(WEB_CLIENT_PREFIX)
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else:
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root_resource = Resource()
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# ideally we'd just use getChild and putChild but getChild doesn't work
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# unless you give it a Request object IN ADDITION to the name :/ So
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# instead, we'll store a copy of this mapping so we can actually add
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# extra resources to existing nodes. See self._resource_id for the key.
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resource_mappings = {}
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for full_path, res in desired_tree.items():
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logger.info("Attaching %s to path %s", res, full_path)
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last_resource = root_resource
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for path_seg in full_path.split('/')[1:-1]:
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if path_seg not in last_resource.listNames():
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# resource doesn't exist, so make a "dummy resource"
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child_resource = Resource()
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last_resource.putChild(path_seg, child_resource)
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res_id = _resource_id(last_resource, path_seg)
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resource_mappings[res_id] = child_resource
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last_resource = child_resource
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else:
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# we have an existing Resource, use that instead.
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res_id = _resource_id(last_resource, path_seg)
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last_resource = resource_mappings[res_id]
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# ===========================
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# now attach the actual desired resource
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last_path_seg = full_path.split('/')[-1]
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# if there is already a resource here, thieve its children and
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# replace it
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res_id = _resource_id(last_resource, last_path_seg)
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if res_id in resource_mappings:
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# there is a dummy resource at this path already, which needs
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# to be replaced with the desired resource.
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existing_dummy_resource = resource_mappings[res_id]
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for child_name in existing_dummy_resource.listNames():
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child_res_id = _resource_id(existing_dummy_resource,
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child_name)
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child_resource = resource_mappings[child_res_id]
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# steal the children
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res.putChild(child_name, child_resource)
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# finally, insert the desired resource in the right place
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last_resource.putChild(last_path_seg, res)
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res_id = _resource_id(last_resource, last_path_seg)
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resource_mappings[res_id] = res
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return root_resource
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def _resource_id(resource, path_seg):
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"""Construct an arbitrary resource ID so you can retrieve the mapping
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later.
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If you want to represent resource A putChild resource B with path C,
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the mapping should looks like _resource_id(A,C) = B.
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Args:
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resource (Resource): The *parent* Resource
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path_seg (str): The name of the child Resource to be attached.
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Returns:
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str: A unique string which can be a key to the child Resource.
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"""
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return "%s-%s" % (resource, path_seg)
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def run(hs):
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PROFILE_SYNAPSE = False
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if PROFILE_SYNAPSE:
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