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def get_services(self):
""" Returns a flat list of the service names available from the marketplace for this space. """ |
services = []
for resource in self._get_services()['resources']:
services.append(resource['entity']['label'])
return services |
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def _get_instances(self, page_number=None):
""" Returns the service instances activated in this space. """ |
instances = []
uri = '/v2/spaces/%s/service_instances' % self.guid
json_response = self.api.get(uri)
instances += json_response['resources']
while json_response['next_url'] is not None:
json_response = self.api.get(json_response['next_url'])
instances += json_response['resources']
return instances |
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def get_instances(self):
""" Returns a flat list of the names of services created in this space. """ |
services = []
for resource in self._get_instances():
services.append(resource['entity']['name'])
return services |
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def has_service_of_type(self, service_type):
""" Tests whether a service instance exists for the given service. """ |
summary = self.get_space_summary()
for instance in summary['services']:
if 'service_plan' in instance:
if service_type == instance['service_plan']['service']['label']:
return True
return False |
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def purge(self):
""" Remove all services and apps from the space. Will leave the space itself, call delete_space() if you want to remove that too. Similar to `cf delete-space -f <space-name>`. """ |
logging.warning("Purging all services from space %s" %
(self.name))
service = predix.admin.cf.services.Service()
for service_name in self.get_instances():
service.purge(service_name)
apps = predix.admin.cf.apps.App()
for app_name in self.get_apps():
apps.delete_app(app_name) |
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def create(self, max_wait=300, allocated_storage=None, encryption_at_rest=None, restore_to_time=None, **kwargs):
""" Create an instance of the PostgreSQL service with the typical starting settings. :param max_wait: service is created asynchronously, so will only wait this number of seconds before giving up. :param allocated_storage: int for GBs to be allocated for storage :param encryption_at_rest: boolean for encrypting data that is stored :param restore_to_time: UTC date within recovery period for db backup to be used when initiating """ |
# MAINT: Add these if there is demand for it and validated
if allocated_storage or encryption_at_rest or restore_to_time:
raise NotImplementedError()
# Will need to wait for the service to be provisioned before can add
# service keys and get env details.
self.service.create(async=True, create_keys=False)
while self._create_in_progress() and max_wait > 0:
if max_wait % 5 == 0:
logging.warning('Can take {}s for create to finish.'.format(max_wait))
time.sleep(1)
max_wait -= 1
# Now get the service env (via service keys)
cfg = self.service._get_service_config()
self.service.settings.save(cfg)
hostname = predix.config.get_env_key(self.use_class, 'hostname')
os.environ[hostname] = self.service.settings.data['hostname']
password = predix.config.get_env_key(self.use_class, 'password')
os.environ[password] = self.service.settings.data['password']
port = predix.config.get_env_key(self.use_class, 'port')
os.environ[port] = str(self.service.settings.data['port'])
username = predix.config.get_env_key(self.use_class, 'username')
os.environ[username] = self.service.settings.data['username']
uri = predix.config.get_env_key(self.use_class, 'uri')
os.environ[uri] = self.service.settings.data['uri'] |
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def create(self, asset, timeseries, client_id, client_secret, ui_client_id=None, ui_client_secret=None):
""" Create an instance of the Analytics Framework Service with the typical starting settings. If not provided, will reuse the runtime client for the ui as well. """ |
assert isinstance(asset, predix.admin.asset.Asset), \
"Require an existing predix.admin.asset.Asset instance"
assert isinstance(timeseries, predix.admin.timeseries.TimeSeries), \
"Require an existing predix.admin.timeseries.TimeSeries instance"
parameters = {
'predixAssetZoneId': asset.get_zone_id(),
'predixTimeseriesZoneId': timeseries.get_query_zone_id(),
'runtimeClientId': client_id,
'runtimeClientSecret': client_secret,
'uiClientId': ui_client_id or client_id,
'uiClientSecret': ui_client_secret or client_secret,
'uiDomainPrefix': self.service.name,
}
self.service.create(parameters=parameters) |
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def add_to_manifest(self, manifest):
""" Add to the manifest to make sure it is bound to the application. """ |
manifest.add_service(self.service.name)
manifest.write_manifest() |
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def _get_zone_id(self):
""" Returns the Predix Zone Id for the service that is a required header in service calls. """ |
if 'VCAP_SERVICES' in os.environ:
services = json.loads(os.getenv('VCAP_SERVICES'))
predix_asset = services['predix-asset'][0]['credentials']
return predix_asset['zone']['http-header-value']
else:
return predix.config.get_env_value(self, 'zone_id') |
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def get_collections(self):
""" Returns a flat list of the names of collections in the asset service. .. ['wind-turbines', 'jet-engines'] """ |
collections = []
for result in self._get_collections():
collections.append(result['collection'])
return collections |
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def get_collection(self, collection, filter=None, fields=None, page_size=None):
""" Returns a specific collection from the asset service with the given collection endpoint. - filters such as "name=Vesuvius" following GEL spec - fields such as "uri,description" comma delimited - page_size such as "100" (the default) """ |
params = {}
if filter:
params['filter'] = filter
if fields:
params['fields'] = fields
if page_size:
params['pageSize'] = page_size
uri = self.uri + '/v1' + collection
return self.service._get(uri, params=params) |
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def create_guid(self, collection=None):
""" Returns a new guid for use in posting a new asset to a collection. """ |
guid = str(uuid.uuid4())
if collection:
return str.join('/', [collection, guid])
else:
return guid |
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def post_collection(self, collection, body):
""" Creates a new collection. This is mostly just transport layer and passes collection and body along. It presumes the body already has generated. The collection is *not* expected to have the id. """ |
assert isinstance(body, (list)), "POST requires body to be a list"
assert collection.startswith('/'), "Collections must start with /"
uri = self.uri + '/v1' + collection
return self.service._post(uri, body) |
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def put_collection(self, collection, body):
""" Updates an existing collection. The collection being updated *is* expected to include the id. """ |
uri = self.uri + '/v1' + collection
return self.service._put(uri, body) |
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def delete_collection(self, collection):
""" Deletes an existing collection. The collection being updated *is* expected to include the id. """ |
uri = str.join('/', [self.uri, collection])
return self.service._delete(uri) |
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def patch_collection(self, collection, changes):
""" Will make specific updates to a record based on JSON Patch documentation. https://tools.ietf.org/html/rfc6902 the format of changes is something like:: [{ 'op': 'add', 'path': '/newfield', 'value': 'just added' }] """ |
uri = str.join('/', [self.uri, collection])
return self.service._patch(uri, changes) |
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def save(self, collection):
""" Save an asset collection to the service. """ |
assert isinstance(collection, predix.data.asset.AssetCollection), "Expected AssetCollection"
collection.validate()
self.put_collection(collection.uri, collection.__dict__) |
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def create_manifest_from_space(self):
""" Populate a manifest file generated from details from the cloud foundry space environment. """ |
space = predix.admin.cf.spaces.Space()
summary = space.get_space_summary()
for instance in summary['services']:
service_type = instance['service_plan']['service']['label']
name = instance['name']
if service_type in self.supported:
service = self.supported[service_type](name=name)
service.add_to_manifest(self)
elif service_type == 'us-weather-forecast':
weather = predix.admin.weather.WeatherForecast(name=name)
weather.add_to_manifest(self)
else:
logging.warning("Unsupported service type: %s" % service_type) |
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def lock_to_org_space(self):
""" Lock the manifest to the current organization and space regardless of Cloud Foundry target. """ |
self.add_env_var('PREDIX_ORGANIZATION_GUID', self.space.org.guid)
self.add_env_var('PREDIX_ORGANIZATION_NAME', self.space.org.name)
self.add_env_var('PREDIX_SPACE_GUID', self.space.guid)
self.add_env_var('PREDIX_SPACE_NAME', self.space.name)
self.write_manifest() |
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def create_uaa(self, admin_secret, **kwargs):
""" Creates an instance of UAA Service. :param admin_secret: The secret password for administering the service such as adding clients and users. """ |
uaa = predix.admin.uaa.UserAccountAuthentication(**kwargs)
if not uaa.exists():
uaa.create(admin_secret, **kwargs)
uaa.add_to_manifest(self)
return uaa |
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def create_client(self, client_id=None, client_secret=None, uaa=None):
""" Create a client and add it to the manifest. :param client_id: The client id used to authenticate as a client in UAA. :param client_secret: The secret password used by a client to authenticate and generate a UAA token. :param uaa: The UAA to create client with """ |
if not uaa:
uaa = predix.admin.uaa.UserAccountAuthentication()
# Client id and secret can be generated if not provided as arguments
if not client_id:
client_id = uaa._create_id()
if not client_secret:
client_secret = uaa._create_secret()
uaa.create_client(client_id, client_secret)
uaa.add_client_to_manifest(client_id, client_secret, self) |
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def create_timeseries(self, **kwargs):
""" Creates an instance of the Time Series Service. """ |
ts = predix.admin.timeseries.TimeSeries(**kwargs)
ts.create()
client_id = self.get_client_id()
if client_id:
ts.grant_client(client_id)
ts.add_to_manifest(self)
return ts |
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def create_blobstore(self, **kwargs):
""" Creates an instance of the BlobStore Service. """ |
blobstore = predix.admin.blobstore.BlobStore(**kwargs)
blobstore.create()
blobstore.add_to_manifest(self)
return blobstore |
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def create_logstash(self, **kwargs):
""" Creates an instance of the Logging Service. """ |
logstash = predix.admin.logstash.Logging(**kwargs)
logstash.create()
logstash.add_to_manifest(self)
logging.info('Install Kibana-Me-Logs application by following GitHub instructions')
logging.info('git clone https://github.com/cloudfoundry-community/kibana-me-logs.git')
return logstash |
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def create_cache(self, **kwargs):
""" Creates an instance of the Cache Service. """ |
cache = predix.admin.cache.Cache(**kwargs)
cache.create(**kwargs)
cache.add_to_manifest(self)
return cache |
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def get_service_marketplace(self, available=True, unavailable=False, deprecated=False):
""" Returns a list of service names. Can return all services, just those supported by PredixPy, or just those not yet supported by PredixPy. :param available: Return the services that are available in PredixPy. (Defaults to True) :param unavailable: Return the services that are not yet supported by PredixPy. (Defaults to False) :param deprecated: Return the services that are supported by PredixPy but no longer available. (True) """ |
supported = set(self.supported.keys())
all_services = set(self.space.get_services())
results = set()
if available:
results.update(supported)
if unavailable:
results.update(all_services.difference(supported))
if deprecated:
results.update(supported.difference(all_services))
return list(results) |
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def _auto_authenticate(self):
""" If we are in an app context we can authenticate immediately. """ |
client_id = predix.config.get_env_value(predix.app.Manifest, 'client_id')
client_secret = predix.config.get_env_value(predix.app.Manifest, 'client_secret')
if client_id and client_secret:
logging.info("Automatically authenticated as %s" % (client_id))
self.uaa.authenticate(client_id, client_secret) |
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def _get(self, uri, params=None, headers=None):
""" Simple GET request for a given path. """ |
if not headers:
headers = self._get_headers()
logging.debug("URI=" + str(uri))
logging.debug("HEADERS=" + str(headers))
response = self.session.get(uri, headers=headers, params=params)
logging.debug("STATUS=" + str(response.status_code))
if response.status_code == 200:
return response.json()
else:
logging.error(b"ERROR=" + response.content)
response.raise_for_status() |
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def _post(self, uri, data):
""" Simple POST request for a given path. """ |
headers = self._get_headers()
logging.debug("URI=" + str(uri))
logging.debug("BODY=" + json.dumps(data))
response = self.session.post(uri, headers=headers,
data=json.dumps(data))
if response.status_code in [200, 204]:
try:
return response.json()
except ValueError:
return "{}"
else:
logging.error(response.content)
response.raise_for_status() |
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def _put(self, uri, data):
""" Simple PUT operation for a given path. """ |
headers = self._get_headers()
logging.debug("URI=" + str(uri))
logging.debug("BODY=" + json.dumps(data))
response = self.session.put(uri, headers=headers,
data=json.dumps(data))
if response.status_code in [201, 204]:
return data
else:
logging.error(response.content)
response.raise_for_status() |
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def _delete(self, uri):
""" Simple DELETE operation for a given path. """ |
headers = self._get_headers()
response = self.session.delete(uri, headers=headers)
# Will return a 204 on successful delete
if response.status_code == 204:
return response
else:
logging.error(response.content)
response.raise_for_status() |
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def _patch(self, uri, data):
""" Simple PATCH operation for a given path. The body is expected to list operations to perform to update the data. Operations include: - add - remove - replace - move - copy - test [ { "op": "test", "path": "/a/b/c", "value": "foo" }, ] """ |
headers = self._get_headers()
response = self.session.patch(uri, headers=headers,
data=json.dumps(data))
# Will return a 204 on successful patch
if response.status_code == 204:
return response
else:
logging.error(response.content)
response.raise_for_status() |
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def _get_resource_uri(self, guid=None):
""" Returns the full path that uniquely identifies the resource endpoint. """ |
uri = self.uri + '/v1/resource'
if guid:
uri += '/' + urllib.quote_plus(guid)
return uri |
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def get_resource(self, resource_id):
""" Returns a specific resource by resource id. """ |
# resource_id could be a path such as '/asset/123' so quote
uri = self._get_resource_uri(guid=resource_id)
return self.service._get(uri) |
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def _post_resource(self, body):
""" Create new resources and associated attributes. Example: acs.post_resource([ { "resourceIdentifier": "masaya", "parents": [], "attributes": [ { "issuer": "default", "name": "country", "value": "Nicaragua" } ], } ]) The issuer is effectively a namespace, and in policy evaluations you identify an attribute by a specific namespace. Many examples provide a URL but it could be any arbitrary string. The body is a list, so many resources can be added at the same time. """ |
assert isinstance(body, (list)), "POST for requires body to be a list"
uri = self._get_resource_uri()
return self.service._post(uri, body) |
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def delete_resource(self, resource_id):
""" Remove a specific resource by its identifier. """ |
# resource_id could be a path such as '/asset/123' so quote
uri = self._get_resource_uri(guid=resource_id)
return self.service._delete(uri) |
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def _put_resource(self, resource_id, body):
""" Update a resource for the given resource id. The body is not a list but a dictionary of a single resource. """ |
assert isinstance(body, (dict)), "PUT requires body to be a dict."
# resource_id could be a path such as '/asset/123' so quote
uri = self._get_resource_uri(guid=resource_id)
return self.service._put(uri, body) |
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def add_resource(self, resource_id, attributes, parents=[], issuer='default'):
""" Will add the given resource with a given identifier and attribute dictionary. example/ add_resource('/asset/12', {'id': 12, 'manufacturer': 'GE'}) """ |
# MAINT: consider test to avoid adding duplicate resource id
assert isinstance(attributes, (dict)), "attributes expected to be dict"
attrs = []
for key in attributes.keys():
attrs.append({
'issuer': issuer,
'name': key,
'value': attributes[key]
})
body = {
"resourceIdentifier": resource_id,
"parents": parents,
"attributes": attrs,
}
return self._put_resource(resource_id, body) |
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def get_subject(self, subject_id):
""" Returns a specific subject by subject id. """ |
# subject_id could be a path such as '/user/j12y' so quote
uri = self._get_subject_uri(guid=subject_id)
return self.service._get(uri) |
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def _post_subject(self, body):
""" Create new subjects and associated attributes. Example: acs.post_subject([ { "subjectIdentifier": "/role/evangelist", "parents": [], "attributes": [ { "issuer": "default", "name": "role", "value": "developer evangelist", } ] } ]) The issuer is effectively a namespace, and in policy evaluations you identify an attribute by a specific namespace. Many examples provide a URL but it could be any arbitrary string. The body is a list, so many subjects can be added at the same time. """ |
assert isinstance(body, (list)), "POST requires body to be a list"
uri = self._get_subject_uri()
return self.service._post(uri, body) |
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def delete_subject(self, subject_id):
""" Remove a specific subject by its identifier. """ |
# subject_id could be a path such as '/role/analyst' so quote
uri = self._get_subject_uri(guid=subject_id)
return self.service._delete(uri) |
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def _put_subject(self, subject_id, body):
""" Update a subject for the given subject id. The body is not a list but a dictionary of a single resource. """ |
assert isinstance(body, (dict)), "PUT requires body to be dict."
# subject_id could be a path such as '/asset/123' so quote
uri = self._get_subject_uri(guid=subject_id)
return self.service._put(uri, body) |
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def add_subject(self, subject_id, attributes, parents=[], issuer='default'):
""" Will add the given subject with a given identifier and attribute dictionary. example/ add_subject('/user/j12y', {'username': 'j12y'}) """ |
# MAINT: consider test to avoid adding duplicate subject id
assert isinstance(attributes, (dict)), "attributes expected to be dict"
attrs = []
for key in attributes.keys():
attrs.append({
'issuer': issuer,
'name': key,
'value': attributes[key]
})
body = {
"subjectIdentifier": subject_id,
"parents": parents,
"attributes": attrs,
}
return self._put_subject(subject_id, body) |
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def _get_monitoring_heartbeat(self):
""" Tests whether or not the ACS service being monitored is alive. """ |
target = self.uri + '/monitoring/heartbeat'
response = self.session.get(target)
return response |
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def is_alive(self):
""" Will test whether the ACS service is up and alive. """ |
response = self.get_monitoring_heartbeat()
if response.status_code == 200 and response.content == 'alive':
return True
return False |
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def _put_policy_set(self, policy_set_id, body):
""" Will create or update a policy set for the given path. """ |
assert isinstance(body, (dict)), "PUT requires body to be a dict."
uri = self._get_policy_set_uri(guid=policy_set_id)
return self.service._put(uri, body) |
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def _get_policy_set(self, policy_set_id):
""" Get a specific policy set by id. """ |
uri = self._get_policy_set_uri(guid=policy_set_id)
return self.service._get(uri) |
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def delete_policy_set(self, policy_set_id):
""" Delete a specific policy set by id. Method is idempotent. """ |
uri = self._get_policy_set_uri(guid=policy_set_id)
return self.service._delete(uri) |
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def add_policy(self, name, action, resource, subject, condition, policy_set_id=None, effect='PERMIT'):
""" Will create a new policy set to enforce the given policy details. The name is just a helpful descriptor for the policy. The action maps to a HTTP verb. Policies are evaluated against resources and subjects. They are identified by matching a uriTemplate or attributes. Examples:: resource = { "uriTemplate": "/asset/{id}" } subject: { "attributes": [{ "issuer": "default", "name": "role" }] } The condition is expected to be a string that defines a groovy operation that can be evaluated. Examples:: condition = "match.single(subject.attributes('default', 'role'), 'admin') """ |
# If not given a policy set id will generate one
if not policy_set_id:
policy_set_id = str(uuid.uuid4())
# Only a few operations / actions are supported in policy definitions
if action not in ['GET', 'PUT', 'POST', 'DELETE']:
raise ValueError("Invalid action")
# Defines a single policy to be part of the policy set.
policy = {
"name": name,
"target": {
"resource": resource,
"subject": subject,
"action": action,
},
"conditions": [{
"name": "",
"condition": condition,
}],
"effect": effect,
}
# Body of the request is a list of policies
body = {
"name": policy_set_id,
"policies": [policy],
}
result = self._put_policy_set(policy_set_id, body)
return result |
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def is_allowed(self, subject_id, action, resource_id, policy_sets=[]):
""" Evaluate a policy-set against a subject and resource. example/ is_allowed('/user/j12y', 'GET', '/asset/12') """ |
body = {
"action": action,
"subjectIdentifier": subject_id,
"resourceIdentifier": resource_id,
}
if policy_sets:
body['policySetsEvaluationOrder'] = policy_sets
# Will return a 200 with decision
uri = self.uri + '/v1/policy-evaluation'
logging.debug("URI=" + str(uri))
logging.debug("BODY=" + str(body))
response = self.service._post(uri, body)
if 'effect' in response:
if response['effect'] in ['NOT_APPLICABLE', 'PERMIT']:
return True
return False |
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def download(url, path=None, headers=None, session=None, show_progress=True, resume=True, auto_retry=True, max_rst_retries=5, pass_through_opts=None, cainfo=None, user_agent=None, auth=None):
"""Main download function""" |
hm = Homura(url, path, headers, session, show_progress, resume,
auto_retry, max_rst_retries, pass_through_opts, cainfo,
user_agent, auth)
hm.start() |
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def _fill_in_cainfo(self):
"""Fill in the path of the PEM file containing the CA certificate. The priority is: 1. user provided path, 2. path to the cacert.pem bundle provided by certifi (if installed), 3. let pycurl use the system path where libcurl's cacert bundle is assumed to be stored, as established at libcurl build time. """ |
if self.cainfo:
cainfo = self.cainfo
else:
try:
cainfo = certifi.where()
except AttributeError:
cainfo = None
if cainfo:
self._pycurl.setopt(pycurl.CAINFO, cainfo) |
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def curl(self):
"""Sending a single cURL request to download""" |
c = self._pycurl
# Resume download
if os.path.exists(self.path) and self.resume:
mode = 'ab'
self.downloaded = os.path.getsize(self.path)
c.setopt(pycurl.RESUME_FROM, self.downloaded)
else:
mode = 'wb'
with open(self.path, mode) as f:
c.setopt(c.URL, utf8_encode(self.url))
if self.auth:
c.setopt(c.USERPWD, '%s:%s' % self.auth)
c.setopt(c.USERAGENT, self._user_agent)
c.setopt(c.WRITEDATA, f)
h = self._get_pycurl_headers()
if h is not None:
c.setopt(pycurl.HTTPHEADER, h)
c.setopt(c.NOPROGRESS, 0)
c.setopt(pycurl.FOLLOWLOCATION, 1)
c.setopt(c.PROGRESSFUNCTION, self.progress)
self._fill_in_cainfo()
if self._pass_through_opts:
for key, value in self._pass_through_opts.items():
c.setopt(key, value)
c.perform() |
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def start(self):
""" Start downloading, handling auto retry, download resume and path moving """ |
if not self.auto_retry:
self.curl()
return
while not self.is_finished:
try:
self.curl()
except pycurl.error as e:
# transfer closed with n bytes remaining to read
if e.args[0] == pycurl.E_PARTIAL_FILE:
pass
# HTTP server doesn't seem to support byte ranges.
# Cannot resume.
elif e.args[0] == pycurl.E_HTTP_RANGE_ERROR:
break
# Recv failure: Connection reset by peer
elif e.args[0] == pycurl.E_RECV_ERROR:
if self._rst_retries < self.max_rst_retries:
pass
else:
raise e
self._rst_retries += 1
else:
raise e
self._move_path()
self._done() |
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def create(self, secret, **kwargs):
""" Create a new instance of the UAA service. Requires a secret password for the 'admin' user account. """ |
parameters = {"adminClientSecret": secret}
self.service.create(parameters=parameters)
# Store URI into environment variable
predix.config.set_env_value(self.use_class, 'uri', self._get_uri())
# Once we create it login
self.authenticate() |
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def authenticate(self):
""" Authenticate into the UAA instance as the admin user. """ |
# Make sure we've stored uri for use
predix.config.set_env_value(self.use_class, 'uri', self._get_uri())
self.uaac = predix.security.uaa.UserAccountAuthentication()
self.uaac.authenticate('admin', self._get_admin_secret(),
use_cache=False)
self.is_admin = True |
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def _create_secret(self, length=12):
""" Use a cryptograhically-secure Pseudorandom number generator for picking a combination of letters, digits, and punctuation to be our secret. :param length: how long to make the secret (12 seems ok most of the time) """ |
# Charset will have 64 +- characters
charset = string.digits + string.ascii_letters + '+-'
return "".join(random.SystemRandom().choice(charset) for _ in
range(length)) |
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def create_client(self, client_id, client_secret):
""" Create a new client for use by applications. """ |
assert self.is_admin, "Must authenticate() as admin to create client"
return self.uaac.create_client(client_id, client_secret) |
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def add_client_to_manifest(self, client_id, client_secret, manifest):
""" Add the client credentials to the specified manifest. """ |
assert self.is_admin, "Must authenticate() as admin to create client"
return self.uaac.add_client_to_manifest(client_id, client_secret,
manifest) |
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def _get_uaa_uri(self):
""" Returns the URI endpoint for an instance of a UAA service instance from environment inspection. """ |
if 'VCAP_SERVICES' in os.environ:
services = json.loads(os.getenv('VCAP_SERVICES'))
predix_uaa = services['predix-uaa'][0]['credentials']
return predix_uaa['uri']
else:
return predix.config.get_env_value(self, 'uri') |
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def _authenticate_client(self, client, secret):
""" Returns response of authenticating with the given client and secret. """ |
client_s = str.join(':', [client, secret])
credentials = base64.b64encode(client_s.encode('utf-8')).decode('utf-8')
headers = {
'Content-Type': 'application/x-www-form-urlencoded',
'Cache-Control': 'no-cache',
'Authorization': 'Basic ' + credentials
}
params = {
'client_id': client,
'grant_type': 'client_credentials'
}
uri = self.uri + '/oauth/token'
logging.debug("URI=" + str(uri))
logging.debug("HEADERS=" + str(headers))
logging.debug("BODY=" + str(params))
response = requests.post(uri, headers=headers, params=params)
if response.status_code == 200:
logging.debug("RESPONSE=" + str(response.json()))
return response.json()
else:
logging.warning("Failed to authenticate as %s" % (client))
response.raise_for_status() |
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def _authenticate_user(self, user, password):
""" Returns the response of authenticating with the given user and password. """ |
headers = self._get_headers()
params = {
'username': user,
'password': password,
'grant_type': 'password',
}
uri = self.uri + '/oauth/token'
logging.debug("URI=" + str(uri))
logging.debug("HEADERS=" + str(headers))
logging.debug("BODY=" + str(params))
response = requests.post(uri, headers=headers, params=params)
if response.status_code == 200:
logging.debug("RESPONSE=" + str(response.json()))
return response.json()
else:
logging.warning("Failed to authenticate %s" % (user))
response.raise_for_status() |
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def is_expired_token(self, client):
""" For a given client will test whether or not the token has expired. This is for testing a client object and does not look up from client_id. You can use _get_client_from_cache() to lookup a client from client_id. """ |
if 'expires' not in client:
return True
expires = dateutil.parser.parse(client['expires'])
if expires < datetime.datetime.now():
return True
return False |
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def _initialize_uaa_cache(self):
""" If we don't yet have a uaa cache we need to initialize it. As there may be more than one UAA instance we index by issuer and then store any clients, users, etc. """ |
try:
os.makedirs(os.path.dirname(self._cache_path))
except OSError as exc:
if exc.errno != errno.EEXIST:
raise
data = {}
data[self.uri] = []
return data |
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def _get_client_from_cache(self, client_id):
""" For the given client_id return what is cached. """ |
data = self._read_uaa_cache()
# Only if we've cached any for this issuer
if self.uri not in data:
return
for client in data[self.uri]:
if client['id'] == client_id:
return client |
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def _write_to_uaa_cache(self, new_item):
""" Cache the client details into a cached file on disk. """ |
data = self._read_uaa_cache()
# Initialize client list if first time
if self.uri not in data:
data[self.uri] = []
# Remove existing client record and any expired tokens
for client in data[self.uri]:
if new_item['id'] == client['id']:
data[self.uri].remove(client)
continue
# May have old tokens laying around to be cleaned up
if 'expires' in client:
expires = dateutil.parser.parse(client['expires'])
if expires < datetime.datetime.now():
data[self.uri].remove(client)
continue
data[self.uri].append(new_item)
with open(self._cache_path, 'w') as output:
output.write(json.dumps(data, sort_keys=True, indent=4)) |
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def authenticate(self, client_id, client_secret, use_cache=True):
""" Authenticate the given client against UAA. The resulting token will be cached for reuse. """ |
# We will reuse a token for as long as we have one cached
# and it hasn't expired.
if use_cache:
client = self._get_client_from_cache(client_id)
if (client) and (not self.is_expired_token(client)):
self.authenticated = True
self.client = client
return
# Let's authenticate the client
client = {
'id': client_id,
'secret': client_secret
}
res = self._authenticate_client(client_id, client_secret)
client.update(res)
expires = datetime.datetime.now() + \
datetime.timedelta(seconds=res['expires_in'])
client['expires'] = expires.isoformat()
# Cache it for repeated use until expired
self._write_to_uaa_cache(client)
self.client = client
self.authenticated = True |
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def logout(self):
""" Log currently authenticated user out, invalidating any existing tokens. """ |
# Remove token from local cache
# MAINT: need to expire token on server
data = self._read_uaa_cache()
if self.uri in data:
for client in data[self.uri]:
if client['id'] == self.client['id']:
data[self.uri].remove(client)
with open(self._cache_path, 'w') as output:
output.write(json.dumps(data, sort_keys=True, indent=4)) |
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def _post(self, uri, data, headers=None):
""" Simple POST request for a given uri path. """ |
if not headers:
headers = self._get_headers()
logging.debug("URI=" + str(uri))
logging.debug("HEADERS=" + str(headers))
logging.debug("BODY=" + str(data))
response = self.session.post(uri, headers=headers,
data=json.dumps(data))
logging.debug("STATUS=" + str(response.status_code))
if response.status_code in [200, 201]:
return response.json()
else:
logging.error(b"ERROR=" + response.content)
response.raise_for_status() |
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def get_token(self):
""" Returns the bare access token for the authorized client. """ |
if not self.authenticated:
raise ValueError("Must authenticate() as a client first.")
# If token has expired we'll need to refresh and get a new
# client credential
if self.is_expired_token(self.client):
logging.info("client token expired, will need to refresh token")
self.authenticate(self.client['id'], self.client['secret'],
use_cache=False)
return self.client['access_token'] |
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def get_scopes(self):
""" Returns the scopes for the authenticated client. """ |
if not self.authenticated:
raise ValueError("Must authenticate() as a client first.")
scope = self.client['scope']
return scope.split() |
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def assert_has_permission(self, scope_required):
""" Warn that the required scope is not found in the scopes granted to the currently authenticated user. :: # The admin user should have client admin permissions uaa.assert_has_permission('admin', 'clients.admin') """ |
if not self.authenticated:
raise ValueError("Must first authenticate()")
if scope_required not in self.get_scopes():
logging.warning("Authenticated as %s" % (self.client['id']))
logging.warning("Have scopes: %s" % (str.join(',', self.get_scopes())))
logging.warning("Insufficient scope %s for operation" % (scope_required))
raise ValueError("Client does not have permission.")
return True |
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def grant_client_permissions(self, client_id, admin=False, write=False, read=False, secret=False):
""" Grant the given client_id permissions for managing clients. - clients.admin: super user scope to create, modify, delete - clients.write: scope ot create and modify clients - clients.read: scope to read info about clients - clients.secret: scope to change password of a client """ |
self.assert_has_permission('clients.admin')
perms = []
if admin:
perms.append('clients.admin')
if write or admin:
perms.append('clients.write')
if read or admin:
perms.append('clients.read')
if secret or admin:
perms.append('clients.secret')
if perms:
self.update_client_grants(client_id, scope=perms,
authorities=perms) |
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def get_clients(self):
""" Returns the clients stored in the instance of UAA. """ |
self.assert_has_permission('clients.read')
uri = self.uri + '/oauth/clients'
headers = self.get_authorization_headers()
response = requests.get(uri, headers=headers)
return response.json()['resources'] |
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def get_client(self, client_id):
""" Returns details about a specific client by the client_id. """ |
self.assert_has_permission('clients.read')
uri = self.uri + '/oauth/clients/' + client_id
headers = self.get_authorization_headers()
response = requests.get(uri, headers=headers)
if response.status_code == 200:
return response.json()
else:
# Not found but don't raise
return |
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def update_client_grants(self, client_id, scope=[], authorities=[], grant_types=[], redirect_uri=[], replace=False):
""" Will extend the client with additional scopes or authorities. Any existing scopes and authorities will be left as is unless asked to replace entirely. """ |
self.assert_has_permission('clients.write')
client = self.get_client(client_id)
if not client:
raise ValueError("Must first create client: '%s'" % (client_id))
if replace:
changes = {
'client_id': client_id,
'scope': scope,
'authorities': authorities,
}
else:
changes = {'client_id': client_id}
if scope:
changes['scope'] = client['scope']
changes['scope'].extend(scope)
if authorities:
changes['authorities'] = client['authorities']
changes['authorities'].extend(authorities)
if grant_types:
if 'authorization_code' in grant_types and not redirect_uri:
logging.warning("A redirect_uri is required for authorization_code.")
changes['authorized_grant_types'] = client['authorized_grant_types']
changes['authorized_grant_types'].extend(grant_types)
if redirect_uri:
if 'redirect_uri' in client:
changes['redirect_uri'] = client['redirect_uri']
changes['redirect_uri'].extend(redirect_uri)
else:
changes['redirect_uri'] = redirect_uri
uri = self.uri + '/oauth/clients/' + client_id
headers = {
"pragma": "no-cache",
"Cache-Control": "no-cache",
"Content-Type": "application/json",
"Accepts": "application/json",
"Authorization": "Bearer " + self.get_token()
}
logging.debug("URI=" + str(uri))
logging.debug("HEADERS=" + str(headers))
logging.debug("BODY=" + json.dumps(changes))
response = requests.put(uri, headers=headers, data=json.dumps(changes))
logging.debug("STATUS=" + str(response.status_code))
if response.status_code == 200:
return response
else:
logging.error(response.content)
response.raise_for_status() |
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def create_client(self, client_id, client_secret, manifest=None, client_credentials=True, refresh_token=True, authorization_code=False, redirect_uri=[]):
""" Will create a new client for your application use. - client_credentials: allows client to get access token - refresh_token: can be used to get new access token when expired without re-authenticating - authorization_code: redirection-based flow for user authentication More details about Grant types: - https://github.com/cloudfoundry/uaa/blob/master/docs/UAA-Security.md - https://tools.ietf.org/html/rfc6749 A redirect_uri is required when using authorization_code. See: https://www.predix.io/support/article/KB0013026 """ |
self.assert_has_permission('clients.admin')
if authorization_code and not redirect_uri:
raise ValueError("Must provide a redirect_uri for clients used with authorization_code")
# Check if client already exists
client = self.get_client(client_id)
if client:
return client
uri = self.uri + '/oauth/clients'
headers = {
"pragma": "no-cache",
"Cache-Control": "no-cache",
"Content-Type": "application/json",
"Accepts": "application/json",
"Authorization": "Bearer " + self.get_token()
}
grant_types = []
if client_credentials:
grant_types.append('client_credentials')
if refresh_token:
grant_types.append('refresh_token')
if authorization_code:
grant_types.append('authorization_code')
params = {
"client_id": client_id,
"client_secret": client_secret,
"scope": ["uaa.none"],
"authorized_grant_types": grant_types,
"authorities": ["uaa.none"],
"autoapprove": []
}
if redirect_uri:
params.append(redirect_uri)
response = requests.post(uri, headers=headers, data=json.dumps(params))
if response.status_code == 201:
if manifest:
self.add_client_to_manifest(client_id, client_secret, manifest)
client = {
'id': client_id,
'secret': client_secret
}
self._write_to_uaa_cache(client)
return response
else:
logging.error(response.content)
response.raise_for_status() |
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def create_user(self, username, password, family_name, given_name, primary_email, details={}):
""" Creates a new user account with the required details. :: create_user('j12y', 'my-secret', 'Delancey', 'Jayson', 'volcano@ge.com') """ |
self.assert_has_permission('scim.write')
data = {
'userName': username,
'password': password,
'name': {
'familyName': family_name,
'givenName': given_name,
},
'emails': [{
'value': primary_email,
'primary': True,
}]
}
if details:
data.update(details)
return self._post_user(data) |
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def delete_user(self, id):
""" Delete user with given id. """ |
self.assert_has_permission('scim.write')
uri = self.uri + '/Users/%s' % id
headers = self._get_headers()
logging.debug("URI=" + str(uri))
logging.debug("HEADERS=" + str(headers))
response = self.session.delete(uri, headers=headers)
logging.debug("STATUS=" + str(response.status_code))
if response.status_code == 200:
return response
else:
logging.error(response.content)
response.raise_for_status() |
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def get_user_by_username(self, username):
""" Returns details for user of the given username. If there is more than one match will only return the first. Use get_users() for full result set. """ |
results = self.get_users(filter='username eq "%s"' % (username))
if results['totalResults'] == 0:
logging.warning("Found no matches for given username.")
return
elif results['totalResults'] > 1:
logging.warning("Found %s matches for username %s" %
(results['totalResults'], username))
return results['resources'][0] |
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def get_user_by_email(self, email):
""" Returns details for user with the given email address. If there is more than one match will only return the first. Use get_users() for full result set. """ |
results = self.get_users(filter='email eq "%s"' % (email))
if results['totalResults'] == 0:
logging.warning("Found no matches for given email.")
return
elif results['totalResults'] > 1:
logging.warning("Found %s matches for email %s" %
(results['totalResults'], email))
return results['resources'][0] |
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def get_user(self, id):
""" Returns details about the user for the given id. Use get_user_by_email() or get_user_by_username() for help identifiying the id. """ |
self.assert_has_permission('scim.read')
return self._get(self.uri + '/Users/%s' % (id)) |
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def grant_client(self, client_id, read=True, write=True):
""" Grant the given client id all the scopes and authorities needed to work with the timeseries service. """ |
scopes = ['openid']
authorities = ['uaa.resource']
if write:
for zone in self.service.settings.data['ingest']['zone-token-scopes']:
scopes.append(zone)
authorities.append(zone)
if read:
for zone in self.service.settings.data['query']['zone-token-scopes']:
scopes.append(zone)
authorities.append(zone)
self.service.uaa.uaac.update_client_grants(client_id, scope=scopes,
authorities=authorities)
return self.service.uaa.uaac.get_client(client_id) |
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def get_query_uri(self):
""" Return the uri used for queries on time series data. """ |
# Query URI has extra path we don't want so strip it off here
query_uri = self.service.settings.data['query']['uri']
query_uri = urlparse(query_uri)
return query_uri.scheme + '://' + query_uri.netloc |
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def find_requirements(path):
""" This method tries to determine the requirements of a particular project by inspecting the possible places that they could be defined. It will attempt, in order: 1) to parse setup.py in the root for an install_requires value 2) to read a requirements.txt file or a requirements.pip in the root 3) to read all .txt files in a folder called 'requirements' in the root 4) to read files matching "*requirements*.txt" and "*reqs*.txt" in the root, excluding any starting or ending with 'test' If one of these succeeds, then a list of pkg_resources.Requirement's will be returned. If none can be found, then a RequirementsNotFound will be raised """ |
requirements = []
setup_py = os.path.join(path, 'setup.py')
if os.path.exists(setup_py) and os.path.isfile(setup_py):
try:
requirements = from_setup_py(setup_py)
requirements.sort()
return requirements
except CouldNotParseRequirements:
pass
for reqfile_name in ('requirements.txt', 'requirements.pip'):
reqfile_path = os.path.join(path, reqfile_name)
if os.path.exists(reqfile_path) and os.path.isfile(reqfile_path):
try:
requirements += from_requirements_txt(reqfile_path)
except CouldNotParseRequirements as e:
pass
requirements_dir = os.path.join(path, 'requirements')
if os.path.exists(requirements_dir) and os.path.isdir(requirements_dir):
from_dir = from_requirements_dir(requirements_dir)
if from_dir is not None:
requirements += from_dir
from_blob = from_requirements_blob(path)
if from_blob is not None:
requirements += from_blob
requirements = list(set(requirements))
if len(requirements) > 0:
requirements.sort()
return requirements
raise RequirementsNotFound |
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def get_app_guid(self, app_name):
""" Returns the GUID for the app instance with the given name. """ |
summary = self.space.get_space_summary()
for app in summary['apps']:
if app['name'] == app_name:
return app['guid'] |
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def delete_app(self, app_name):
""" Delete the given app. Will fail intentionally if there are any service bindings. You must delete those first. """ |
if app_name not in self.space.get_apps():
logging.warning("App not found so... succeeded?")
return True
guid = self.get_app_guid(app_name)
self.api.delete("/v2/apps/%s" % (guid)) |
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def _get_service_config(self):
""" Reads in config file of UAA credential information or generates one as a side-effect if not yet initialized. """ |
# Should work for windows, osx, and linux environments
if not os.path.exists(self.config_path):
try:
os.makedirs(os.path.dirname(self.config_path))
except OSError as exc:
if exc.errno != errno.EEXIST:
raise
return {}
with open(self.config_path, 'r') as data:
return json.load(data) |
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def _write_service_config(self):
""" Will write the config out to disk. """ |
with open(self.config_path, 'w') as output:
output.write(json.dumps(self.data, sort_keys=True, indent=4)) |
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def create(self, **kwargs):
""" Create an instance of the Blob Store Service with the typical starting settings. """ |
self.service.create(**kwargs)
predix.config.set_env_value(self.use_class, 'url',
self.service.settings.data['url'])
predix.config.set_env_value(self.use_class, 'access_key_id',
self.service.settings.data['access_key_id'])
predix.config.set_env_value(self.use_class, 'bucket_name',
self.service.settings.data['bucket_name'])
predix.config.set_env_value(self.use_class, 'host',
self.service.settings.data['host'])
predix.config.set_env_value(self.use_class, 'secret_access_key',
self.service.settings.data['secret_access_key']) |
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def _get_assets(self, bbox, size=None, page=None, asset_type=None, device_type=None, event_type=None, media_type=None):
""" Returns the raw results of an asset search for a given bounding box. """ |
uri = self.uri + '/v1/assets/search'
headers = self._get_headers()
params = {
'bbox': bbox,
}
# Query parameters
params['q'] = []
if device_type:
if isinstance(device_type, str):
device_type = [device_type]
for device in device_type:
if device not in self.DEVICE_TYPES:
logging.warning("Invalid device type: %s" % device)
params['q'].append("device-type:%s" % device)
if asset_type:
if isinstance(asset_type, str):
asset_type = [asset_type]
for asset in asset_type:
if asset not in self.ASSET_TYPES:
logging.warning("Invalid asset type: %s" % asset)
params['q'].append("assetType:%s" % asset)
if media_type:
if isinstance(media_type, str):
media_type = [media_type]
for media in media_type:
if media not in self.MEDIA_TYPES:
logging.warning("Invalid media type: %s" % media)
params['q'].append("mediaType:%s" % media)
if event_type:
if isinstance(event_type, str):
event_type = [event_type]
for event in event_type:
if event not in self.EVENT_TYPES:
logging.warning("Invalid event type: %s" % event)
params['q'].append("eventTypes:%s" % event)
# Pagination parameters
if size:
params['size'] = size
if page:
params['page'] = page
return self.service._get(uri, params=params, headers=headers) |
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def get_assets(self, bbox, **kwargs):
""" Query the assets stored in the intelligent environment for a given bounding box and query. Assets can be filtered by type of asset, event, or media available. - device_type=['DATASIM'] - asset_type=['CAMERA'] - event_type=['PKIN'] - media_type=['IMAGE'] Pagination can be controlled with keyword parameters - page=2 - size=100 Returns a list of assets stored in a dictionary that describe their: - asset-id - device-type - device-id - media-type - coordinates - event-type Additionally there are some _links for additional information. """ |
response = self._get_assets(bbox, **kwargs)
# Remove broken HATEOAS _links but identify asset uid first
assets = []
for asset in response['_embedded']['assets']:
asset_url = asset['_links']['self']
uid = asset_url['href'].split('/')[-1]
asset['uid'] = uid
del(asset['_links'])
assets.append(asset)
return assets |
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def _get_asset(self, asset_uid):
""" Returns raw response for an given asset by its unique id. """ |
uri = self.uri + '/v2/assets/' + asset_uid
headers = self._get_headers()
return self.service._get(uri, headers=headers) |
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def label(self, input_grid):
""" Label input grid with hysteresis method. Args: input_grid: 2D array of values. Returns: Labeled output grid. """ |
unset = 0
high_labels, num_labels = label(input_grid > self.high_thresh)
region_ranking = np.argsort(maximum(input_grid, high_labels, index=np.arange(1, num_labels + 1)))[::-1]
output_grid = np.zeros(input_grid.shape, dtype=int)
stack = []
for rank in region_ranking:
label_num = rank + 1
label_i, label_j = np.where(high_labels == label_num)
for i in range(label_i.size):
if output_grid[label_i[i], label_j[i]] == unset:
stack.append((label_i[i], label_j[i]))
while len(stack) > 0:
index = stack.pop()
output_grid[index] = label_num
for i in range(index[0] - 1, index[0] + 2):
for j in range(index[1] - 1, index[1] + 2):
if 0 <= i < output_grid.shape[0] and 0 <= j < output_grid.shape[1]:
if (input_grid[i, j] > self.low_thresh) and (output_grid[i, j] == unset):
stack.append((i, j))
return output_grid |
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def size_filter(labeled_grid, min_size):
""" Remove labeled objects that do not meet size threshold criteria. Args: labeled_grid: 2D output from label method. min_size: minimum size of object in pixels. Returns: labeled grid with smaller objects removed. """ |
out_grid = np.zeros(labeled_grid.shape, dtype=int)
slices = find_objects(labeled_grid)
j = 1
for i, s in enumerate(slices):
box = labeled_grid[s]
size = np.count_nonzero(box.ravel() == (i + 1))
if size >= min_size and box.shape[0] > 1 and box.shape[1] > 1:
out_grid[np.where(labeled_grid == i + 1)] = j
j += 1
return out_grid |
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def get_string(self, prompt, default_str=None) -> str: """Return a string value that the user enters. Raises exception for cancel.""" |
accept_event = threading.Event()
value_ref = [None]
def perform():
def accepted(text):
value_ref[0] = text
accept_event.set()
def rejected():
accept_event.set()
self.__message_column.remove_all()
pose_get_string_message_box(self.ui, self.__message_column, prompt, str(default_str), accepted, rejected)
#self.__message_column.add(self.__make_cancel_row())
with self.__lock:
self.__q.append(perform)
self.document_controller.add_task("ui_" + str(id(self)), self.__handle_output_and_q)
accept_event.wait()
def update_message_column():
self.__message_column.remove_all()
self.__message_column.add(self.__make_cancel_row())
self.document_controller.add_task("ui_" + str(id(self)), update_message_column)
if value_ref[0] is None:
raise Exception("Cancel")
return value_ref[0] |
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| def isfinite(self):
"Test whether the predicted values are finite"
if self._multiple_outputs:
if self.hy_test is not None:
r = [(hy.isfinite() and (hyt is None or hyt.isfinite()))
for hy, hyt in zip(self.hy, self.hy_test)]
else:
r = [hy.isfinite() for hy in self.hy]
return np.all(r)
return self.hy.isfinite() and (self.hy_test is None or
self.hy_test.isfinite()) |
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def value_of_named_argument_in_function(argument_name, function_name, search_str, resolve_varname=False):
""" Parse an arbitrary block of python code to get the value of a named argument from inside a function call """ |
try:
search_str = unicode(search_str)
except NameError:
pass
readline = StringIO(search_str).readline
try:
token_generator = tokenize.generate_tokens(readline)
tokens = [SimplifiedToken(toknum, tokval) for toknum, tokval, _, _, _ in token_generator]
except tokenize.TokenError as e:
raise ValueError('search_str is not parse-able python code: ' + str(e))
in_function = False
is_var = False
for i in range(len(tokens)):
if (
not in_function and
tokens[i].typenum == tokenize.NAME and tokens[i].value == function_name and
tokens[i+1].typenum == tokenize.OP and tokens[i+1].value == '('
):
in_function = True
continue
elif (
in_function and
tokens[i].typenum == tokenize.NAME and tokens[i].value == argument_name and
tokens[i+1].typenum == tokenize.OP and tokens[i+1].value == '='
):
# value is set to another variable which we are going to attempt to resolve
if resolve_varname and tokens[i+2].typenum == 1:
is_var = True
argument_name = tokens[i+2].value
break
# again, for a very specific usecase -- get the whole value and concatenate it
# this will match something like _version.__version__
j = 3
while True:
if tokens[i+j].value in (',', ')') or tokens[i+j].typenum == 58:
break
j += 1
return ''.join([t.value for t in tokens[i+2:i+j]]).strip()
# this is very dumb logic, and only works if the function argument is set to a variable
# which is set to a string value
if is_var:
for i in range(len(tokens)):
if (
tokens[i].typenum == tokenize.NAME and tokens[i].value == argument_name and
tokens[i+1].typenum == tokenize.OP and tokens[i+1].value == '='
):
return tokens[i+2].value.strip()
return None |
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def regex_in_file(regex, filepath, return_match=False):
""" Search for a regex in a file If return_match is True, return the found object instead of a boolean """ |
file_content = get_file_content(filepath)
re_method = funcy.re_find if return_match else funcy.re_test
return re_method(regex, file_content) |
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def regex_in_package_file(regex, filename, package_name, return_match=False):
""" Search for a regex in a file contained within the package directory If return_match is True, return the found object instead of a boolean """ |
filepath = package_file_path(filename, package_name)
return regex_in_file(regex, filepath, return_match=return_match) |
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