def doDistribution(destinationNode, server, sourceUrl, destinationUrl, lock):
# We want to always use the replication filter function to replicate
# only distributable doc and filter out any other type of documents.
# However we don't have any query arguments until we test if there is any filter.
replicationOptions={'filter':ResourceDataModel.REPLICATION_FILTER,
'query_params': None}
# If the destination node is using an filter and is not custom use it
# as the query params for the filter function
if ((destinationNode.filterDescription is not None) and
(destinationNode.filterDescription.custom_filter == False)):
replicationOptions['query_params'] = destinationNode.filterDescription.specData
#if distinationNode['distribute service'] .service_auth["service_authz"] is not None:
#log.info("Destination node '{}' require authentication".format(destinationUrl))
#Try to get the user name and password the url.
credential = sourceLRNode.getDistributeCredentialFor(destinationUrl)
if credential is not None:
parsedUrl = urlparse.urlparse(destinationUrl)
destinationUrl = destinationUrl.replace(parsedUrl.netloc, "{0}:{1}@{2}".format(
credential['username'], credential['password'], parsedUrl.netloc))
log.info("\n\nReplication started\nSource:{0}\nDestionation:{1}\nArgs:{2}".format(
sourceUrl, destinationUrl, str(replicationOptions)))
if replicationOptions['query_params'] is None:
del replicationOptions['query_params']
results = server.replicate(sourceUrl, destinationUrl, **replicationOptions)
log.debug("Replication results: "+str(results))
with lock:
server = couchdb.Server(appConfig['couchdb.url'])
db = server[appConfig['couchdb.db.node']]
doc = db[appConfig['lr.nodestatus.docid']]
doc['last_out_sync'] = h.nowToISO8601Zformat()
doc['out_sync_node'] = destinationNode.nodeDescription.node_name
db[appConfig['lr.nodestatus.docid']] = doc
def _setNodeStatus(self):
nodeStatus = None
nodeStatusId = "node status"
nodeStatus = NodeStatusModel.get(nodeStatusId)
if nodeStatus is None:
nodeStatus = NodeStatusModel()
nodeStatus.active = self.nodeDescription.active
nodeStatus.node_id = self._nodeDescription.node_id
nodeStatus.node_name = self.nodeDescription.node_name
nodeStatus.start_time = h.nowToISO8601Zformat()
nodeStatus.install_time = nodeStatus.start_time
nodeStatus.save(doc_id = nodeStatusId)
else:
nodeStatus = NodeStatusModel(nodeStatus)
nodeStatus.start_time = h.nowToISO8601Zformat()
nodeStatus.update()
self._nodeStatus = nodeStatus
def set_timestamps(self, model, timestamp=None):
if timestamp == None:
timestamp = helpers.nowToISO8601Zformat()
for stamp in ResourceDataHelper.TIME_STAMPS:
if stamp not in model or stamp is 'node_timestamp':
model[stamp] = timestamp
return model
def _getNodeJsonDescription(self):
description = {'timestamp': h.nowToISO8601Zformat()}
description.update(self._communityDescription.descriptionDict)
description.update(self._networkDescription.descriptionDict)
description.update(self._nodeDescription.descriptionDict)
description.update(self._networkPolicyDescription.descriptionDict)
if hasattr(self, '_filterDescription'):
description['filter'] = self._filterDescription.descriptionDict
return json.dumps(description, indent=2)
def _getStatusDescription(self):
count = 0
view = ResourceDataModel._defaultDB.view(appConfig['couchdb.db.resourcecount'],stale=appConfig['couchdb.stale.flag'])
if len(view.rows) > 0:
count = view.rows[0].value
statusData = {'doc_count': count,
'timestamp': h.nowToISO8601Zformat()}
statusData.update(self._nodeStatus.specData)
return statusData
def __init__(self, data=None):
super(ResourceDataModel, self).__init__(data)
# Set the timestamps by default on creation use utc.
timeStamp = h.nowToISO8601Zformat()
# Set the timestap on creation if they are not set.
for stamp in self._TIME_STAMPS:
if stamp not in self._specData.keys():
self.__setattr__(stamp, timeStamp)
# Set the doc is none is provided.
if self._DOC_ID not in self._specData.keys():
doc_id = uuid4().hex
self.__setattr__(self._DOC_ID, doc_id)
def publishResourceData(self, docs):
resourceDatabase = self._server[self._nodeConfig.get("couch_info", "resourcedata")]
for d in docs:
doc = {}
doc.update(d)
# delete any previous revision number for the docs
if "_rev" in doc:
del doc["_rev"]
doc["doc_ID"] = uuid.uuid4().hex
now = h.nowToISO8601Zformat()
doc["node_timestamp"] = now
doc["create_timestamp"] = now
doc["update_timestamp"] = now
resourceDatabase[doc["doc_ID"]] = doc
self.waitOnChangeMonitor()
def load_environment(global_conf, app_conf):
"""Configure the Pylons environment via the ``pylons.config``
object
"""
config = PylonsConfig()
# Pylons paths
root = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
paths = dict(root=root,
controllers=os.path.join(root, 'controllers'),
static_files=os.path.join(root, 'public'),
templates=[os.path.join(root, 'templates')])
try:
logging.config.fileConfig(global_conf['__file__'])
except:
pass#to make unit tests run
# Initialize config with the basic options
config.init_app(global_conf, app_conf, package='lr', paths=paths)
config['routes.map'] = make_map(config)
config['pylons.app_globals'] = app_globals.Globals(config)
config['pylons.h'] = lr.lib.helpers
config['pylons.response_options']['content-type'] = 'application/json'
# Setup cache object as early as possible
import pylons
pylons.cache._push_object(config['pylons.app_globals'].cache)
# Create the Mako TemplateLookup, with the default auto-escaping
config['pylons.app_globals'].mako_lookup = TemplateLookup(
directories=paths['templates'],
error_handler=handle_mako_error,
module_directory=os.path.join(app_conf['cache_dir'], 'templates'),
input_encoding='utf-8', default_filters=['escape'],
imports=['from webhelpers.html import escape'])
# CONFIGURATION OPTIONS HERE (note: all config options will override
# any Pylons config options)
import couchdb
import lr.lib.helpers as helpers
server = couchdb.Server(config['couchdb.url.dbadmin'])
db = server[config['couchdb.db.node']]
doc = db[config['lr.nodestatus.docid']]
doc['start_time'] = helpers.nowToISO8601Zformat()
db.save(doc)
return config
def _getNodeJsonPolicy(self):
policy = {'timestamp': h.nowToISO8601Zformat()}
key="network_description"
if key in self._networkDescription.descriptionDict.keys():
policy[key] = self._networkDescription.descriptionDict[key]
key="network_name"
if key in self._networkDescription.descriptionDict.keys():
policy[key] = self._networkDescription.descriptionDict[key]
key="node_id"
if key in self._nodeDescription.descriptionDict.keys():
policy[key] = self._nodeDescription.descriptionDict[key]
key="node_name"
if key in self._nodeDescription.descriptionDict.keys():
policy[key] = self._nodeDescription.descriptionDict[key]
# policy.update(self._networkPolicyDescription.descriptionDict)
policy.update(self._networkPolicyDescription.specData)
return json.dumps(policy, indent=2)
def handleDocument(newDoc):
should_delete = True
try:
newDoc['node_timestamp'] = h.nowToISO8601Zformat()
rd = ResourceDataModel(newDoc)
rd.save(log_exceptions=False)
except SpecValidationException as e:
log.error(newDoc['_id'] + str(e))
except ResourceConflict:
log.error('conflict')
except Exception as ex:
should_delete = False # don't delete something unexpected happend
log.error(ex)
if should_delete:
try:
del database[newDoc['_id']]
except Exception as ex:
log.error(ex)
def _getNodeJsonPolicy(self):
policy = {'timestamp': h.nowToISO8601Zformat()}
key="network_description"
if key in self._networkDescription.descriptionDict.keys():
policy[key] = self._networkDescription.descriptionDict[key]
key="network_name"
if key in self._networkDescription.descriptionDict.keys():
policy[key] = self._networkDescription.descriptionDict[key]
key="node_id"
if key in self._nodeDescription.descriptionDict.keys():
policy[key] = self._nodeDescription.descriptionDict[key]
key="node_name"
if key in self._nodeDescription.descriptionDict.keys():
policy[key] = self._nodeDescription.descriptionDict[key]
# policy.update(self._networkPolicyDescription.descriptionDict)
policy.update(self._networkPolicyDescription.specData)
return json.dumps(policy, indent=2)
def makeTombstone(replacement_doc, replacement_info, orig_doc_id, orig_doc=None):
tombstone = copy.deepcopy(_TOMBSTONE_TEMPLATE)
tombstone.update({
"doc_ID": orig_doc_id,
"create_timestamp": nowToISO8601Zformat()
})
if orig_doc is not None:
tombstone["resource_locator"] = orig_doc["resource_locator"]
if "replaces" in orig_doc:
tombstone["replaces"] = orig_doc["replaces"]
else:
del tombstone["replaces"]
tombstone["replaced_by"].update({
"doc_ID": replacement_doc["doc_ID"],
"public_key_fingerprint": replacement_info.pubkey_fingerprint,
"public_key_locations": replacement_doc["digital_signature"]["key_location"]
})
return tombstone
def _handle(self, change, database):
should_delete = True
try:
log.debug('got here')
newDoc = change[_DOC]
newDoc['node_timestamp'] = h.nowToISO8601Zformat()
rd = ResourceDataModel(newDoc)
rd.save(log_exceptions=False)
except SpecValidationException:
log.error(str(newDoc) + " Fails Validation" )
except ResourceConflict:
pass #ignore conflicts
except Exception as ex:
should_delete = False # don't delete something unexpected happend
log.error(ex)
if should_delete:
try:
del database[change[_ID]]
except Exception as ex:
log.error(ex)
def _getStatusDescription(self):
statusData = {'doc_count': ResourceDataModel._defaultDB.view(appConfig['couchdb.db.resourcesview'],stale='ok').total_rows,
'timestamp': h.nowToISO8601Zformat()}
statusData.update(self._nodeStatus.specData)
return statusData
def recordChanges():
if self._monitoringChanges == True:
return
self._monitoringChanges = True;
db = ResourceDataModel._defaultDB
while True:
# I have to include the doc since the filter does seems to work. Otherwise
# using the same replication filter to get only resource_data document
# would work been better.
options ={'feed': 'continuous',
'since': self._lastChangeSeq,
'include_docs':True
}
changes = db.changes(**options)
for change in changes:
if 'doc' not in change:
continue
timestamp = h.nowToISO8601Zformat()
# See if the document is of resource_data type if not ignore it.
doc = change['doc']
if ((not 'resource_data' in doc) and
(not 'resource_data_distributable' in doc)):
continue
log.info("Change to handle ....")
# Handle resource_data.
if doc['doc_type'] == 'resource_data':
log.info("\*******Changes to resource_document: "+doc['_id'])
distributableID = doc['_id']+"-distributable"
# Use the ResourceDataModel class to create an object that
# contains only a the resource_data spec data.
distributableDoc = ResourceDataModel(doc)._specData
#remove the node timestamp
del distributableDoc['node_timestamp']
#change thet doc_type
distributableDoc['doc_type']='resource_data_distributable'
log.debug("\n\ndistributable doc:\n{0}\n".format(pprint.pformat(distributableDoc)))
# Check to see if a corresponding distributatable document exist.
# not create a new distribuation document without the
# node_timestamp and _id+distributable.
if not distributableID in db:
try:
log.info('Adding distributable doc...\n')
db[distributableID] = distributableDoc
except Exception as e:
log.error("Cannot save distributable document copy\n")
log.exception(e)
else:
# A distributable copy of the document is in the database. See
# if need be updated.
try:
savedDistributableDoc = db[distributableID]
except Exception as e:
log.error("Cannot get existing distributatable document\n")
log.exception(e)
continue
temp = {}
temp.update(savedDistributableDoc);
# Remove the couchdb generated field so that can compare
# the two document and see it there is a need for update.
for k in _COUCHDB_FIELDS:
if k in temp:
del temp[k]
if distributableDoc != temp:
savedDistributableDoc.update(distributableDoc)
log.info("\n\nUpdate distribuatable doc:\n")
log.debug("\n{0}\n\n".format(pprint.pformat(distributableDoc)))
try:
db.update([savedDistributableDoc])
except Exception as e:
log.error("Failed to update existing distributable doc: {0}".format(
pprint.pformat(savedDistributableDoc)))
log.exception(e)
elif doc['doc_type'] == 'resource_data_distributable':
log.info("\n-------Changes to distributable resource doc: "+doc['_id'])
#check if the document is alredy in the database.
resourceDataID = doc['doc_ID']
# Create a resource_data object from the distributable data.
# the specData will generate a node_timestamp be default
resourceDataDoc = ResourceDataModel(doc)._specData
resourceDataDoc['doc_type'] = 'resource_data'
if resourceDataID not in db:
try:
log.info("Adding new resource_data for distributable")
db[resourceDataID] = resourceDataDoc
except Exception as e:
log.error("\n\nCannot get current document: {0}".format(
pprint.pformat(resourceDataDoc)))
log.exception(e)
else:
# There exist already a resource_data document for the distributable
# get it and see if it needs to be updated.
try:
savedResourceDoc = db[resourceDataID]
except Exception as e:
log.error("\n\nCannot find existing resource_data doc for distributable: \n{0}".format(
pprint.pformat(doc)))
log.exception(e)
continue
#Remove the couchdb generated fields.
temp = {}
temp.update(savedResourceDoc)
for k in _COUCHDB_FIELDS:
if k in temp:
del temp[k]
# Now deleate the node_timestamp field on both document
# before comparing them.
del temp['node_timestamp']
del resourceDataDoc['node_timestamp']
if temp != resourceDataDoc:
savedResourceDoc.update(resourceDataDoc)
try:
log.info("\nUpdate existing resource data from distributable\n")
db.update([savedResourceDoc])
except Exception as e:
log.error("\n\nFailed to udpate existing resource_data doc:\n{0}".format(
pprint.pformat(savedResourceDoc)))
log.exception(e)
# Keep last change sequence.
self._lastChangeSeq = change['seq']
def _getStatusDescription(self):
statusData = {'doc_count': ResourceDataModel._defaultDB.info()['doc_count'],
'timestamp': h.nowToISO8601Zformat()}
statusData.update(self._nodeStatus.specData)
return statusData
