class EasyClient(object):
"""Client for simplified communication with Beergarden
This class is intended to be a middle ground between the RestClient and
SystemClient. It provides a 'cleaner' interface to some common Beergarden
operations than is exposed by the lower-level RestClient. On the other hand,
the SystemClient is much better for generating Beergarden Requests.
Keyword Args:
bg_host (str): Beergarden hostname
bg_port (int): Beergarden port
ssl_enabled (Optional[bool]): Whether to use SSL (HTTP vs HTTPS)
api_version (Optional[int]): The REST API version
ca_cert (Optional[str]): Path to CA certificate file
client_cert (Optional[str]): Path to client certificate file
parser (Optional[SchemaParser]): Parser to use
logger (Optional[Logger]): Logger to use
url_prefix (Optional[str]): Beergarden REST API prefix
ca_verify (Optional[bool]): Whether to verify the server cert hostname
username (Optional[str]): Username for authentication
password (Optional[str]): Password for authentication
access_token (Optional[str]): Access token for authentication
refresh_token (Optional[str]): Refresh token for authentication
client_timeout (Optional[float]): Max time to wait for a server response
"""
def __init__(self,
bg_host=None,
bg_port=None,
ssl_enabled=False,
api_version=None,
ca_cert=None,
client_cert=None,
parser=None,
logger=None,
url_prefix=None,
ca_verify=True,
**kwargs):
bg_host = bg_host or kwargs.get("host")
bg_port = bg_port or kwargs.get("port")
self.logger = logger or logging.getLogger(__name__)
self.parser = parser or SchemaParser()
self.client = RestClient(bg_host=bg_host,
bg_port=bg_port,
ssl_enabled=ssl_enabled,
api_version=api_version,
ca_cert=ca_cert,
client_cert=client_cert,
url_prefix=url_prefix,
ca_verify=ca_verify,
**kwargs)
def can_connect(self, **kwargs):
"""Determine if the Beergarden server is responding.
Kwargs:
Arguments passed to the underlying Requests method
Returns:
A bool indicating if the connection attempt was successful. Will
return False only if a ConnectionError is raised during the attempt.
Any other exception will be re-raised.
Raises:
requests.exceptions.RequestException:
The connection attempt resulted in an exception that indicates
something other than a basic connection error. For example,
an error with certificate verification.
"""
try:
self.client.get_config(**kwargs)
except requests.exceptions.ConnectionError as ex:
if type(ex) == requests.exceptions.ConnectionError:
return False
raise
return True
@wrap_response(default_exc=FetchError)
def get_version(self, **kwargs):
"""Get Bartender, Brew-view, and API version information
Args:
**kwargs: Extra parameters
Returns:
dict: Response object with version information in the body
"""
return self.client.get_version(**kwargs)
@wrap_response(parse_method="parse_logging_config",
default_exc=RestConnectionError)
def get_logging_config(self, system_name):
"""Get logging configuration for a System
Args:
system_name (str): The name of the System
Returns:
LoggingConfig: The configuration object
"""
return self.client.get_logging_config(system_name=system_name)
def find_unique_system(self, **kwargs):
"""Find a unique system
.. note::
If 'id' is a given keyword argument then all other parameters will
be ignored.
Args:
**kwargs: Search parameters
Returns:
System, None: The System if found, None otherwise
Raises:
FetchError: More than one matching System was found
"""
if "id" in kwargs:
return self._find_system_by_id(kwargs.pop("id"), **kwargs)
else:
systems = self.find_systems(**kwargs)
if not systems:
return None
if len(systems) > 1:
raise FetchError("More than one matching System found")
return systems[0]
@wrap_response(parse_method="parse_system",
parse_many=True,
default_exc=FetchError)
def find_systems(self, **kwargs):
"""Find Systems using keyword arguments as search parameters
Args:
**kwargs: Search parameters
Returns:
List[System]: List of Systems matching the search parameters
"""
return self.client.get_systems(**kwargs)
@wrap_response(parse_method="parse_system",
parse_many=False,
default_exc=SaveError)
def create_system(self, system):
"""Create a new System
Args:
system (System): The System to create
Returns:
System: The newly-created system
"""
return self.client.post_systems(self.parser.serialize_system(system))
@wrap_response(parse_method="parse_system",
parse_many=False,
default_exc=SaveError)
def update_system(self, system_id, new_commands=None, **kwargs):
"""Update a System
Args:
system_id (str): The System ID
new_commands (Optional[List[Command]]): New System commands
Keyword Args:
metadata (dict): New System metadata
description (str): New System description
display_name (str): New System display name
icon_name (str) The: New System icon name
Returns:
System: The updated system
"""
operations = []
metadata = kwargs.pop("metadata", {})
if new_commands:
commands = self.parser.serialize_command(new_commands,
to_string=False,
many=True)
operations.append(PatchOperation("replace", "/commands", commands))
if metadata:
operations.append(PatchOperation("update", "/metadata", metadata))
for key, value in kwargs.items():
if value is not None:
operations.append(PatchOperation("replace", "/%s" % key,
value))
return self.client.patch_system(
system_id, self.parser.serialize_patch(operations, many=True))
def remove_system(self, **kwargs):
"""Remove a unique System
Args:
**kwargs: Search parameters
Returns:
bool: True if removal was successful
Raises:
FetchError: Couldn't find a System matching given parameters
"""
system = self.find_unique_system(**kwargs)
if system is None:
raise FetchError("No matching System found")
return self._remove_system_by_id(system.id)
@wrap_response(parse_method="parse_instance",
parse_many=False,
default_exc=SaveError)
def initialize_instance(self, instance_id):
"""Start an Instance
Args:
instance_id (str): The Instance ID
Returns:
Instance: The updated Instance
"""
return self.client.patch_instance(
instance_id,
self.parser.serialize_patch(PatchOperation("initialize")))
@wrap_response(parse_method="parse_instance",
parse_many=False,
default_exc=FetchError)
def get_instance(self, instance_id):
"""Get an Instance
Args:
instance_id: The Id
Returns:
The Instance
"""
return self.client.get_instance(instance_id)
def get_instance_status(self, instance_id):
"""Get an Instance
WARNING: This method currently returns the Instance, not the Instance's status.
This behavior will be corrected in 3.0.
To prepare for this change please use get_instance() instead of this method.
Args:
instance_id: The Id
Returns:
The status
"""
warnings.warn(
"This method currently returns the Instance, not the Instance's status. "
"This behavior will be corrected in 3.0. To prepare please use "
"get_instance() instead of this method.",
FutureWarning,
)
return self.get_instance(instance_id)
@wrap_response(parse_method="parse_instance",
parse_many=False,
default_exc=SaveError)
def update_instance_status(self, instance_id, new_status):
"""Update an Instance status
Args:
instance_id (str): The Instance ID
new_status (str): The new status
Returns:
Instance: The updated Instance
"""
return self.client.patch_instance(
instance_id,
self.parser.serialize_patch(
PatchOperation("replace", "/status", new_status)),
)
@wrap_response(return_boolean=True, default_exc=SaveError)
def instance_heartbeat(self, instance_id):
"""Send an Instance heartbeat
Args:
instance_id (str): The Instance ID
Returns:
bool: True if the heartbeat was successful
"""
return self.client.patch_instance(
instance_id,
self.parser.serialize_patch(PatchOperation("heartbeat")))
@wrap_response(return_boolean=True, default_exc=DeleteError)
def remove_instance(self, instance_id):
"""Remove an Instance
Args:
instance_id (str): The Instance ID
Returns:
bool: True if the remove was successful
"""
if instance_id is None:
raise DeleteError("Cannot delete an instance without an id")
return self.client.delete_instance(instance_id)
def find_unique_request(self, **kwargs):
"""Find a unique request
.. note::
If 'id' is a given keyword argument then all other parameters will
be ignored.
Args:
**kwargs: Search parameters
Returns:
Request, None: The Request if found, None otherwise
Raises:
FetchError: More than one matching Request was found
"""
if "id" in kwargs:
return self._find_request_by_id(kwargs.pop("id"))
else:
all_requests = self.find_requests(**kwargs)
if not all_requests:
return None
if len(all_requests) > 1:
raise FetchError("More than one matching Request found")
return all_requests[0]
@wrap_response(parse_method="parse_request",
parse_many=True,
default_exc=FetchError)
def find_requests(self, **kwargs):
"""Find Requests using keyword arguments as search parameters
Args:
**kwargs: Search parameters
Returns:
List[Request]: List of Systems matching the search parameters
"""
return self.client.get_requests(**kwargs)
@wrap_response(parse_method="parse_request",
parse_many=False,
default_exc=SaveError)
def create_request(self, request, **kwargs):
"""Create a new Request
Args:
request: New request definition
kwargs: Extra request parameters
Keyword Args:
blocking (bool): Wait for request to complete before returning
timeout (int): Maximum seconds to wait for completion
Returns:
Request: The newly-created Request
"""
return self.client.post_requests(
self.parser.serialize_request(request), **kwargs)
@wrap_response(parse_method="parse_request",
parse_many=False,
default_exc=SaveError)
def update_request(self,
request_id,
status=None,
output=None,
error_class=None):
"""Update a Request
Args:
request_id (str): The Request ID
status (Optional[str]): New Request status
output (Optional[str]): New Request output
error_class (Optional[str]): New Request error class
Returns:
Response: The updated response
"""
operations = []
if status:
operations.append(PatchOperation("replace", "/status", status))
if output:
operations.append(PatchOperation("replace", "/output", output))
if error_class:
operations.append(
PatchOperation("replace", "/error_class", error_class))
return self.client.patch_request(
request_id, self.parser.serialize_patch(operations, many=True))
@wrap_response(return_boolean=True)
def publish_event(self, *args, **kwargs):
"""Publish a new event
Args:
*args: If a positional argument is given it's assumed to be an
Event and will be used
**kwargs: Will be used to construct a new Event to publish if no
Event is given in the positional arguments
Keyword Args:
_publishers (Optional[List[str]]): List of publisher names.
If given the Event will only be published to the specified
publishers. Otherwise all publishers known to Beergarden will
be used.
Returns:
bool: True if the publish was successful
"""
publishers = kwargs.pop("_publishers", None)
event = args[0] if args else Event(**kwargs)
return self.client.post_event(self.parser.serialize_event(event),
publishers=publishers)
@wrap_response(parse_method="parse_queue", parse_many=True)
def get_queues(self):
"""Retrieve all queue information
:return: The response
"""
return self.client.get_queues()
@wrap_response(return_boolean=True)
def clear_queue(self, queue_name):
"""Cancel and remove all Requests from a message queue
Args:
queue_name (str): The name of the queue to clear
Returns:
bool: True if the clear was successful
"""
return self.client.delete_queue(queue_name)
@wrap_response(return_boolean=True)
def clear_all_queues(self):
"""Cancel and remove all Requests in all queues
Returns:
bool: True if the clear was successful
"""
return self.client.delete_queues()
@wrap_response(parse_method="parse_job",
parse_many=True,
default_exc=FetchError)
def find_jobs(self, **kwargs):
"""Find Jobs using keyword arguments as search parameters
Args:
**kwargs: Search parameters
Returns:
List[Job]: List of Jobs matching the search parameters
"""
return self.client.get_jobs(**kwargs)
@wrap_response(parse_method="parse_job",
parse_many=False,
default_exc=SaveError)
def create_job(self, job):
"""Create a new Job
Args:
job (Job): New Job definition
Returns:
Job: The newly-created Job
"""
return self.client.post_jobs(self.parser.serialize_job(job))
@wrap_response(return_boolean=True, default_exc=DeleteError)
def remove_job(self, job_id):
"""Remove a unique Job
Args:
job_id (str): The Job ID
Returns:
bool: True if removal was successful
Raises:
DeleteError: Couldn't remove Job
"""
return self.client.delete_job(job_id)
def pause_job(self, job_id):
"""Pause a Job
Args:
job_id (str): The Job ID
Returns:
Job: The updated Job
"""
self._patch_job(job_id,
[PatchOperation("update", "/status", "PAUSED")])
def resume_job(self, job_id):
"""Resume a Job
Args:
job_id (str): The Job ID
Returns:
Job: The updated Job
"""
self._patch_job(job_id,
[PatchOperation("update", "/status", "RUNNING")])
@wrap_response(parse_method="parse_principal",
parse_many=False,
default_exc=FetchError)
def get_user(self, user_identifier):
"""Find a user
Args:
user_identifier (str): User ID or username
Returns:
Principal: The User
"""
return self.client.get_user(user_identifier)
def who_am_i(self):
"""Find user using the current set of credentials
Returns:
Principal: The User
"""
return self.get_user(self.client.username or "anonymous")
@wrap_response(
parse_method="parse_system",
parse_many=False,
default_exc=FetchError,
raise_404=False,
)
def _find_system_by_id(self, system_id, **kwargs):
return self.client.get_system(system_id, **kwargs)
@wrap_response(return_boolean=True, default_exc=DeleteError)
def _remove_system_by_id(self, system_id):
if system_id is None:
raise DeleteError("Cannot delete a system without an id")
return self.client.delete_system(system_id)
@wrap_response(
parse_method="parse_request",
parse_many=False,
default_exc=FetchError,
raise_404=False,
)
def _find_request_by_id(self, request_id):
return self.client.get_request(request_id)
@wrap_response(parse_method="parse_job",
parse_many=False,
default_exc=SaveError)
def _patch_job(self, job_id, operations):
return self.client.patch_job(
job_id, self.parser.serialize_patch(operations, many=True))
class EasyClient(object):
"""Client for communicating with beer-garden
This class provides nice wrappers around the functionality provided by a
:py:class:`brewtils.rest.client.RestClient`
:param bg_host: beer-garden REST API hostname.
:param bg_port: beer-garden REST API port.
:param ssl_enabled: Flag indicating whether to use HTTPS when communicating with beer-garden.
:param api_version: The beer-garden REST API version. Will default to the latest version.
:param ca_cert: beer-garden REST API server CA certificate.
:param client_cert: The client certificate to use when making requests.
:param parser: The parser to use. If None will default to an instance of SchemaParser.
:param logger: The logger to use. If None one will be created.
:param url_prefix: beer-garden REST API URL Prefix.
:param ca_verify: Flag indicating whether to verify server certificate when making a request.
:param username: Username for Beergarden authentication
:param password: Password for Beergarden authentication
:param access_token: Access token for Beergarden authentication
:param refresh_token: Refresh token for Beergarden authentication
:param client_timeout: Max time to will wait for server response
"""
def __init__(self,
bg_host=None,
bg_port=None,
ssl_enabled=False,
api_version=None,
ca_cert=None,
client_cert=None,
parser=None,
logger=None,
url_prefix=None,
ca_verify=True,
**kwargs):
bg_host = bg_host or kwargs.get('host')
bg_port = bg_port or kwargs.get('port')
self.logger = logger or logging.getLogger(__name__)
self.parser = parser or SchemaParser()
self.client = RestClient(bg_host=bg_host,
bg_port=bg_port,
ssl_enabled=ssl_enabled,
api_version=api_version,
ca_cert=ca_cert,
client_cert=client_cert,
url_prefix=url_prefix,
ca_verify=ca_verify,
**kwargs)
def can_connect(self, **kwargs):
"""Determine if the Beergarden server is responding.
Kwargs:
Arguments passed to the underlying Requests method
Returns:
A bool indicating if the connection attempt was successful. Will
return False only if a ConnectionError is raised during the attempt.
Any other exception will be re-raised.
Raises:
requests.exceptions.RequestException:
The connection attempt resulted in an exception that indicates
something other than a basic connection error. For example,
an error with certificate verification.
"""
try:
self.client.get_config(**kwargs)
except requests.exceptions.ConnectionError as ex:
if type(ex) == requests.exceptions.ConnectionError:
return False
raise
return True
def get_version(self, **kwargs):
response = self.client.get_version(**kwargs)
if response.ok:
return response
else:
self._handle_response_failure(response, default_exc=FetchError)
def find_unique_system(self, **kwargs):
"""Find a unique system using keyword arguments as search parameters
:param kwargs: Search parameters
:return: One system instance
"""
if 'id' in kwargs:
return self._find_system_by_id(kwargs.pop('id'), **kwargs)
else:
systems = self.find_systems(**kwargs)
if not systems:
return None
if len(systems) > 1:
raise FetchError(
"More than one system found that specifies the given constraints"
)
return systems[0]
def find_systems(self, **kwargs):
"""Find systems using keyword arguments as search parameters
:param kwargs: Search parameters
:return: A list of system instances satisfying the given search parameters
"""
response = self.client.get_systems(**kwargs)
if response.ok:
return self.parser.parse_system(response.json(), many=True)
else:
self._handle_response_failure(response, default_exc=FetchError)
def _find_system_by_id(self, system_id, **kwargs):
"""Finds a system by id, convert JSON to a system object and return it"""
response = self.client.get_system(system_id, **kwargs)
if response.ok:
return self.parser.parse_system(response.json())
else:
self._handle_response_failure(response,
default_exc=FetchError,
raise_404=False)
def create_system(self, system):
"""Create a new system by POSTing
:param system: The system to create
:return: The system creation response
"""
json_system = self.parser.serialize_system(system)
response = self.client.post_systems(json_system)
if response.ok:
return self.parser.parse_system(response.json())
else:
self._handle_response_failure(response, default_exc=SaveError)
def update_system(self, system_id, new_commands=None, **kwargs):
"""Update a system by PATCHing
:param system_id: The ID of the system to update
:param new_commands: The new commands
:Keyword Arguments:
* *metadata* (``dict``) The updated metadata for the system
* *description* (``str``) The updated description for the system
* *display_name* (``str``) The updated display_name for the system
* *icon_name* (``str``) The updated icon_name for the system
:return: The response
"""
operations = []
metadata = kwargs.pop("metadata", {})
if new_commands:
operations.append(
PatchOperation(
'replace', '/commands',
self.parser.serialize_command(new_commands,
to_string=False,
many=True)))
if metadata:
operations.append(PatchOperation('update', '/metadata', metadata))
for attr, value in kwargs.items():
if value is not None:
operations.append(
PatchOperation('replace', '/%s' % attr, value))
response = self.client.patch_system(
system_id, self.parser.serialize_patch(operations, many=True))
if response.ok:
return self.parser.parse_system(response.json())
else:
self._handle_response_failure(response, default_exc=SaveError)
def remove_system(self, **kwargs):
"""Remove a specific system by DELETEing, using keyword arguments as search parameters
:param kwargs: Search parameters
:return: The response
"""
system = self.find_unique_system(**kwargs)
if system is None:
raise FetchError(
"Could not find system matching the given search parameters")
return self._remove_system_by_id(system.id)
def _remove_system_by_id(self, system_id):
if system_id is None:
raise DeleteError("Cannot delete a system without an id")
response = self.client.delete_system(system_id)
if response.ok:
return True
else:
self._handle_response_failure(response, default_exc=DeleteError)
def initialize_instance(self, instance_id):
"""Start an instance by PATCHing
:param instance_id: The ID of the instance to start
:return: The start response
"""
response = self.client.patch_instance(
instance_id,
self.parser.serialize_patch(PatchOperation('initialize')))
if response.ok:
return self.parser.parse_instance(response.json())
else:
self._handle_response_failure(response, default_exc=SaveError)
def get_instance_status(self, instance_id):
"""Get an instance's status
Args:
instance_id: The Id
Returns:
The status
"""
response = self.client.get_instance(instance_id)
if response.ok:
return self.parser.parse_instance(response.json())
else:
self._handle_response_failure(response, default_exc=FetchError)
def update_instance_status(self, instance_id, new_status):
"""Update an instance by PATCHing
:param instance_id: The ID of the instance to start
:param new_status: The updated status
:return: The start response
"""
payload = PatchOperation('replace', '/status', new_status)
response = self.client.patch_instance(
instance_id, self.parser.serialize_patch(payload))
if response.ok:
return self.parser.parse_instance(response.json())
else:
self._handle_response_failure(response, default_exc=SaveError)
def instance_heartbeat(self, instance_id):
"""Send heartbeat for health and status
:param instance_id: The ID of the instance
:return: The response
"""
payload = PatchOperation('heartbeat')
response = self.client.patch_instance(
instance_id, self.parser.serialize_patch(payload))
if response.ok:
return True
else:
self._handle_response_failure(response, default_exc=SaveError)
def remove_instance(self, instance_id):
"""Remove an instance
:param instance_id: The ID of the instance
:return: The response
"""
if instance_id is None:
raise DeleteError("Cannot delete an instance without an id")
response = self.client.delete_instance(instance_id)
if response.ok:
return True
else:
self._handle_response_failure(response, default_exc=DeleteError)
def find_unique_request(self, **kwargs):
"""Find a unique request using keyword arguments as search parameters
.. note::
If 'id' is present in kwargs then all other parameters will be ignored.
:param kwargs: Search parameters
:return: One request instance
"""
if 'id' in kwargs:
return self._find_request_by_id(kwargs.pop('id'))
else:
requests = self.find_requests(**kwargs)
if not requests:
return None
if len(requests) > 1:
raise FetchError("More than one request found that specifies "
"the given constraints")
return requests[0]
def find_requests(self, **kwargs):
"""Find requests using keyword arguments as search parameters
:param kwargs: Search parameters
:return: A list of request instances satisfying the given search parameters
"""
response = self.client.get_requests(**kwargs)
if response.ok:
return self.parser.parse_request(response.json(), many=True)
else:
self._handle_response_failure(response, default_exc=FetchError)
def _find_request_by_id(self, request_id):
"""Finds a request by id, convert JSON to a request object and return it"""
response = self.client.get_request(request_id)
if response.ok:
return self.parser.parse_request(response.json())
else:
self._handle_response_failure(response,
default_exc=FetchError,
raise_404=False)
def create_request(self, request, **kwargs):
"""Create a new request by POSTing
Args:
request: New request definition
kwargs: Extra request parameters
Keyword Args:
blocking: Wait for request to complete
timeout: Maximum seconds to wait
Returns:
Response to the request
"""
json_request = self.parser.serialize_request(request)
response = self.client.post_requests(json_request, **kwargs)
if response.ok:
return self.parser.parse_request(response.json())
else:
self._handle_response_failure(response, default_exc=SaveError)
def update_request(self,
request_id,
status=None,
output=None,
error_class=None):
"""Set various fields on a request by PATCHing
:param request_id: The ID of the request to update
:param status: The new status
:param output: The new output
:param error_class: The new error class
:return: The response
"""
operations = []
if status:
operations.append(PatchOperation('replace', '/status', status))
if output:
operations.append(PatchOperation('replace', '/output', output))
if error_class:
operations.append(
PatchOperation('replace', '/error_class', error_class))
response = self.client.patch_request(
request_id, self.parser.serialize_patch(operations, many=True))
if response.ok:
return self.parser.parse_request(response.json())
else:
self._handle_response_failure(response, default_exc=SaveError)
def get_logging_config(self, system_name):
"""Get the logging configuration for a particular system.
:param system_name: Name of system
:return: LoggingConfig object
"""
response = self.client.get_logging_config(system_name=system_name)
if response.ok:
return self.parser.parse_logging_config(response.json())
else:
self._handle_response_failure(response,
default_exc=RestConnectionError)
def publish_event(self, *args, **kwargs):
"""Publish a new event by POSTing
:param args: The Event to create
:param _publishers: Optional list of specific publishers. If None all publishers will be
used.
:param kwargs: If no Event is given in the *args, on will be constructed from the kwargs
:return: The response
"""
publishers = kwargs.pop('_publishers', None)
json_event = self.parser.serialize_event(args[0] if args else Event(
**kwargs))
response = self.client.post_event(json_event, publishers=publishers)
if response.ok:
return True
else:
self._handle_response_failure(response)
def get_queues(self):
"""Retrieve all queue information
:return: The response
"""
response = self.client.get_queues()
if response.ok:
return self.parser.parse_queue(response.json(), many=True)
else:
self._handle_response_failure(response)
def clear_queue(self, queue_name):
"""Cancel and clear all messages from a queue
:return: The response
"""
response = self.client.delete_queue(queue_name)
if response.ok:
return True
else:
self._handle_response_failure(response)
def clear_all_queues(self):
"""Cancel and clear all messages from all queues
:return: The response
"""
response = self.client.delete_queues()
if response.ok:
return True
else:
self._handle_response_failure(response)
def find_jobs(self, **kwargs):
"""Find jobs using keyword arguments as search parameters
Args:
**kwargs: Search parameters
Returns:
List of jobs.
"""
response = self.client.get_jobs(**kwargs)
if response.ok:
return self.parser.parse_job(response.json(), many=True)
else:
self._handle_response_failure(response, default_exc=FetchError)
def create_job(self, job):
"""Create a new job by POSTing
Args:
job: The job to create
Returns:
The job creation response.
"""
json_job = self.parser.serialize_job(job)
response = self.client.post_jobs(json_job)
if response.ok:
return self.parser.parse_job(response.json())
else:
self._handle_response_failure(response, default_exc=SaveError)
def remove_job(self, job_id):
"""Remove a job by ID.
Args:
job_id: The ID of the job to remove.
Returns:
True if successful, raises an error otherwise.
"""
response = self.client.delete_job(job_id)
if response.ok:
return True
else:
self._handle_response_failure(response, default_exc=DeleteError)
def pause_job(self, job_id):
"""Pause a Job by ID.
Args:
job_id: The ID of the job to pause.
Returns:
A copy of the job.
"""
self._patch_job(job_id,
[PatchOperation('update', '/status', 'PAUSED')])
def _patch_job(self, job_id, operations):
response = self.client.patch_job(
job_id, self.parser.serialize_patch(operations, many=True))
if response.ok:
return self.parser.parse_job(response.json())
else:
self._handle_response_failure(response, default_exc=SaveError)
def resume_job(self, job_id):
"""Resume a job by ID.
Args:
job_id: The ID of the job to resume.
Returns:
A copy of the job.
"""
self._patch_job(job_id,
[PatchOperation('update', '/status', 'RUNNING')])
def who_am_i(self):
"""Find the user represented by the current set of credentials
:return: The current user
"""
return self.get_user(self.client.username or 'anonymous')
def get_user(self, user_identifier):
"""Find a specific user using username or ID
:param user_identifier: ID or username of User
:return: A User
"""
response = self.client.get_user(user_identifier)
if response.ok:
return self.parser.parse_principal(response.json())
else:
self._handle_response_failure(response, default_exc=FetchError)
@staticmethod
def _handle_response_failure(response,
default_exc=RestError,
raise_404=True):
if response.status_code == 404:
if raise_404:
raise NotFoundError(response.json())
else:
return None
elif response.status_code == 408:
raise WaitExceededError(response.json())
elif response.status_code == 409:
raise ConflictError(response.json())
elif 400 <= response.status_code < 500:
raise ValidationError(response.json())
elif response.status_code == 503:
raise RestConnectionError(response.json())
else:
raise default_exc(response.json())
class EasyClient(object):
"""Client for simplified communication with Beergarden
This class is intended to be a middle ground between the RestClient and
SystemClient. It provides a 'cleaner' interface to some common Beergarden
operations than is exposed by the lower-level RestClient. On the other hand,
the SystemClient is much better for generating Beergarden Requests.
Args:
bg_host (str): Beer-garden hostname
bg_port (int): Beer-garden port
bg_url_prefix (str): URL path that will be used as a prefix when communicating
with Beer-garden. Useful if Beer-garden is running on a URL other than '/'.
ssl_enabled (bool): Whether to use SSL for Beer-garden communication
ca_cert (str): Path to certificate file containing the certificate of the
authority that issued the Beer-garden server certificate
ca_verify (bool): Whether to verify Beer-garden server certificate
client_cert (str): Path to client certificate to use when communicating with
Beer-garden
api_version (int): Beer-garden API version to use
client_timeout (int): Max time to wait for Beer-garden server response
username (str): Username for Beer-garden authentication
password (str): Password for Beer-garden authentication
access_token (str): Access token for Beer-garden authentication
refresh_token (str): Refresh token for Beer-garden authentication
"""
_default_file_params = {
"chunk_size": 255 * 1024,
}
def __init__(self, *args, **kwargs):
# This points DeprecationWarnings at the right line
kwargs.setdefault("stacklevel", 4)
self.client = RestClient(*args, **kwargs)
def can_connect(self, **kwargs):
# type: (**Any) -> bool
"""Determine if the Beergarden server is responding.
Args:
**kwargs: Keyword arguments passed to the underlying Requests method
Returns:
A bool indicating if the connection attempt was successful. Will
return False only if a ConnectionError is raised during the attempt.
Any other exception will be re-raised.
Raises:
requests.exceptions.RequestException:
The connection attempt resulted in an exception that indicates
something other than a basic connection error. For example,
an error with certificate verification.
"""
return self.client.can_connect(**kwargs)
@wrap_response(default_exc=FetchError)
def get_version(self, **kwargs):
"""Get Bartender, Brew-view, and API version information
Args:
**kwargs: Extra parameters
Returns:
dict: Response object with version information in the body
"""
return self.client.get_version(**kwargs)
@wrap_response(default_exc=FetchError)
def get_config(self):
"""Get configuration
Returns:
dict: Configuration dictionary
"""
return self.client.get_config()
@wrap_response(default_exc=FetchError)
def get_logging_config(self, system_name=None, local=False):
"""Get a logging configuration
Note that the system_name is not relevant and is only provided for
backward-compatibility.
Args:
system_name (str): UNUSED
Returns:
dict: The configuration object
"""
return self.client.get_logging_config(local=local)
@wrap_response(parse_method="parse_garden",
parse_many=False,
default_exc=FetchError)
def get_garden(self, garden_name):
"""Get a Garden
Args:
garden_name: Name of garden to retrieve
Returns:
The Garden
"""
return self.client.get_garden(garden_name)
@wrap_response(parse_method="parse_garden",
parse_many=True,
default_exc=FetchError)
def get_gardens(self):
"""Get all Gardens.
Returns:
A list of all the Gardens
"""
return self.client.get_gardens()
@wrap_response(parse_method="parse_garden",
parse_many=False,
default_exc=SaveError)
def create_garden(self, garden):
"""Create a new Garden
Args:
garden (Garden): The Garden to create
Returns:
Garden: The newly-created Garden
"""
return self.client.post_gardens(SchemaParser.serialize_garden(garden))
@wrap_response(return_boolean=True, raise_404=True)
def remove_garden(self, garden_name):
"""Remove a unique Garden
Args:
garden_name (String): Name of Garden to remove
Returns:
bool: True if removal was successful
Raises:
NotFoundError: Couldn't find a Garden matching given name
"""
return self.client.delete_garden(garden_name)
@wrap_response(parse_method="parse_garden", default_exc=FetchError)
def update_garden(self, garden):
garden_as_dict = SchemaParser.serialize_garden(garden, to_string=False)
patches = json.dumps([{
"operation": "config",
"path": "",
"value": garden_as_dict,
}])
return self.client.patch_garden(garden.name, patches)
@wrap_response(parse_method="parse_system",
parse_many=False,
default_exc=FetchError)
def get_system(self, system_id):
"""Get a Garden
Args:
system_id: The Id
Returns:
The System
"""
return self.client.get_system(system_id)
def find_unique_system(self, **kwargs):
"""Find a unique system
.. note::
If 'id' is a given keyword argument then all other parameters will
be ignored.
Args:
**kwargs: Search parameters
Returns:
System, None: The System if found, None otherwise
Raises:
FetchError: More than one matching System was found
"""
if "id" in kwargs:
try:
return self.get_system(kwargs.pop("id"), **kwargs)
except NotFoundError:
return None
else:
systems = self.find_systems(**kwargs)
if not systems:
return None
if len(systems) > 1:
raise FetchError("More than one matching System found")
return systems[0]
@wrap_response(parse_method="parse_system",
parse_many=True,
default_exc=FetchError)
def find_systems(self, **kwargs):
"""Find Systems using keyword arguments as search parameters
Args:
**kwargs: Search parameters
Returns:
List[System]: List of Systems matching the search parameters
"""
return self.client.get_systems(**kwargs)
@wrap_response(parse_method="parse_system",
parse_many=False,
default_exc=SaveError)
def create_system(self, system):
"""Create a new System
Args:
system (System): The System to create
Returns:
System: The newly-created system
"""
return self.client.post_systems(SchemaParser.serialize_system(system))
@wrap_response(parse_method="parse_system",
parse_many=False,
default_exc=SaveError)
def update_system(self, system_id, new_commands=None, **kwargs):
"""Update a System
Args:
system_id (str): The System ID
new_commands (Optional[List[Command]]): New System commands
Keyword Args:
add_instance (Instance): An Instance to append
metadata (dict): New System metadata
description (str): New System description
display_name (str): New System display name
icon_name (str): New System icon name
template (str): New System template
Returns:
System: The updated system
"""
operations = []
if new_commands is not None:
commands = SchemaParser.serialize_command(new_commands,
to_string=False,
many=True)
operations.append(PatchOperation("replace", "/commands", commands))
add_instance = kwargs.pop("add_instance", None)
if add_instance:
instance = SchemaParser.serialize_instance(add_instance,
to_string=False)
operations.append(PatchOperation("add", "/instance", instance))
metadata = kwargs.pop("metadata", {})
if metadata:
operations.append(PatchOperation("update", "/metadata", metadata))
# The remaining kwargs are all strings
# Sending an empty string (instead of None) ensures they're actually cleared
for key, value in kwargs.items():
operations.append(
PatchOperation("replace", "/%s" % key, value or ""))
return self.client.patch_system(
system_id, SchemaParser.serialize_patch(operations, many=True))
def remove_system(self, **kwargs):
"""Remove a unique System
Args:
**kwargs: Search parameters
Returns:
bool: True if removal was successful
Raises:
FetchError: Couldn't find a System matching given parameters
"""
system = self.find_unique_system(**kwargs)
if system is None:
raise FetchError("No matching System found")
return self._remove_system_by_id(system.id)
@wrap_response(parse_method="parse_instance",
parse_many=False,
default_exc=SaveError)
def initialize_instance(self, instance_id, runner_id=None):
"""Start an Instance
Args:
instance_id (str): The Instance ID
runner_id (str): The PluginRunner ID, if any
Returns:
Instance: The updated Instance
"""
return self.client.patch_instance(
instance_id,
SchemaParser.serialize_patch(
PatchOperation(operation="initialize",
value={"runner_id": runner_id})),
)
@wrap_response(parse_method="parse_instance",
parse_many=False,
default_exc=FetchError)
def get_instance(self, instance_id):
"""Get an Instance
Args:
instance_id: The Id
Returns:
The Instance
"""
return self.client.get_instance(instance_id)
@wrap_response(parse_method="parse_instance",
parse_many=False,
default_exc=SaveError)
def update_instance(self, instance_id, **kwargs):
"""Update an Instance status
Args:
instance_id (str): The Instance ID
Keyword Args:
new_status (str): The new status
metadata (dict): Will be added to existing instance metadata
Returns:
Instance: The updated Instance
"""
operations = []
new_status = kwargs.pop("new_status", None)
metadata = kwargs.pop("metadata", {})
if new_status:
operations.append(PatchOperation("replace", "/status", new_status))
if metadata:
operations.append(PatchOperation("update", "/metadata", metadata))
return self.client.patch_instance(
instance_id, SchemaParser.serialize_patch(operations, many=True))
def get_instance_status(self, instance_id):
"""
.. deprecated: 3.0
Will be removed in 4.0. Use ``get_instance()`` instead
Get an Instance's status
Args:
instance_id: The Id
Returns:
The Instance's status
"""
_deprecate(
"This method is deprecated and scheduled to be removed in 4.0. "
"Please use get_instance() instead.")
return self.get_instance(instance_id).status
def update_instance_status(self, instance_id, new_status):
"""
.. deprecated: 3.0
Will be removed in 4.0. Use ``update_instance()`` instead
Get an Instance's status
Args:
instance_id (str): The Instance ID
new_status (str): The new status
Returns:
Instance: The updated Instance
"""
_deprecate(
"This method is deprecated and scheduled to be removed in 4.0. "
"Please use update_instance() instead.")
return self.update_instance(instance_id, new_status=new_status)
@wrap_response(return_boolean=True, default_exc=SaveError)
def instance_heartbeat(self, instance_id):
"""Send an Instance heartbeat
Args:
instance_id (str): The Instance ID
Returns:
bool: True if the heartbeat was successful
"""
return self.client.patch_instance(
instance_id,
SchemaParser.serialize_patch(PatchOperation("heartbeat")))
@wrap_response(return_boolean=True, default_exc=DeleteError)
def remove_instance(self, instance_id):
"""Remove an Instance
Args:
instance_id (str): The Instance ID
Returns:
bool: True if the remove was successful
"""
if instance_id is None:
raise DeleteError("Cannot delete an instance without an id")
return self.client.delete_instance(instance_id)
@wrap_response(parse_method="parse_request",
parse_many=False,
default_exc=FetchError)
def get_request(self, request_id):
"""Get a Request
Args:
request_id: The Id
Returns:
The Request
"""
return self.client.get_request(request_id)
def find_unique_request(self, **kwargs):
"""Find a unique request
.. note::
If 'id' is a given keyword argument then all other parameters will
be ignored.
Args:
**kwargs: Search parameters
Returns:
Request, None: The Request if found, None otherwise
Raises:
FetchError: More than one matching Request was found
"""
if "id" in kwargs:
try:
return self.get_request(kwargs.pop("id"))
except NotFoundError:
return None
else:
all_requests = self.find_requests(**kwargs)
if not all_requests:
return None
if len(all_requests) > 1:
raise FetchError("More than one matching Request found")
return all_requests[0]
@wrap_response(parse_method="parse_request",
parse_many=True,
default_exc=FetchError)
def find_requests(self, **kwargs):
"""Find Requests using keyword arguments as search parameters
Args:
**kwargs: Search parameters
Returns:
List[Request]: List of Systems matching the search parameters
"""
return self.client.get_requests(**kwargs)
@wrap_response(parse_method="parse_request",
parse_many=False,
default_exc=SaveError)
def create_request(self, request, **kwargs):
"""Create a new Request
Args:
request: New request definition
**kwargs: Extra request parameters
Keyword Args:
blocking (bool): Wait for request to complete before returning
timeout (int): Maximum seconds to wait for completion
Returns:
Request: The newly-created Request
"""
return self.client.post_requests(
SchemaParser.serialize_request(request), **kwargs)
@wrap_response(parse_method="parse_request",
parse_many=False,
default_exc=SaveError)
def update_request(self,
request_id,
status=None,
output=None,
error_class=None):
"""Update a Request
Args:
request_id (str): The Request ID
status (Optional[str]): New Request status
output (Optional[str]): New Request output
error_class (Optional[str]): New Request error class
Returns:
Response: The updated response
"""
operations = []
if status:
operations.append(PatchOperation("replace", "/status", status))
if output:
operations.append(PatchOperation("replace", "/output", output))
if error_class:
operations.append(
PatchOperation("replace", "/error_class", error_class))
return self.client.patch_request(
request_id, SchemaParser.serialize_patch(operations, many=True))
@wrap_response(return_boolean=True)
def publish_event(self, *args, **kwargs):
"""Publish a new event
Args:
*args: If a positional argument is given it's assumed to be an
Event and will be used
**kwargs: Will be used to construct a new Event to publish if no
Event is given in the positional arguments
Keyword Args:
_publishers (Optional[List[str]]): List of publisher names.
If given the Event will only be published to the specified
publishers. Otherwise all publishers known to Beergarden will
be used.
Returns:
bool: True if the publish was successful
"""
publishers = kwargs.pop("_publishers", None)
event = args[0] if args else Event(**kwargs)
return self.client.post_event(SchemaParser.serialize_event(event),
publishers=publishers)
@wrap_response(parse_method="parse_queue",
parse_many=True,
default_exc=FetchError)
def get_queues(self):
"""Retrieve all queue information
Returns:
List[Queue]: List of all Queues
"""
return self.client.get_queues()
@wrap_response(return_boolean=True, default_exc=DeleteError)
def clear_queue(self, queue_name):
"""Cancel and remove all Requests from a message queue
Args:
queue_name (str): The name of the queue to clear
Returns:
bool: True if the clear was successful
"""
return self.client.delete_queue(queue_name)
@wrap_response(return_boolean=True, default_exc=DeleteError)
def clear_all_queues(self):
"""Cancel and remove all Requests in all queues
Returns:
bool: True if the clear was successful
"""
return self.client.delete_queues()
@wrap_response(parse_method="parse_job",
parse_many=True,
default_exc=FetchError)
def find_jobs(self, **kwargs):
"""Find Jobs using keyword arguments as search parameters
Args:
**kwargs: Search parameters
Returns:
List[Job]: List of Jobs matching the search parameters
"""
return self.client.get_jobs(**kwargs)
@wrap_response(parse_method="parse_job",
parse_many=True,
default_exc=FetchError)
def export_jobs(self, job_id_list=None):
# type: (Optional[List[str]]) -> List[Job]
"""Export jobs from an optional job ID list.
If `job_id_list` is None or empty, definitions for all jobs are returned.
Args:
job_id_list: A list of job IDS, optional
Returns:
A list of job definitions
"""
# we should check that the argument is a list (if it's not None) because the
# call to `len` will otherwise produce an unhelpful error message
if job_id_list is not None and not isinstance(job_id_list, list):
raise TypeError(
"Argument must be a list of job IDs, an empty list or None")
payload = (SchemaParser.serialize_job_ids(job_id_list, many=True) if
job_id_list is not None and len(job_id_list) > 0 else "{}")
return self.client.post_export_jobs(
payload) # noqa # wrapper changes type
@wrap_response(parse_method="parse_job_ids")
def import_jobs(self, job_list):
# type: (List[Job]) -> List[str]
"""Import job definitions from a list of Jobs.
Args:
job_list: A list of jobs to import
Returns:
A list of the job IDs created
"""
return self.client.post_import_jobs( # noqa # wrapper changes type
SchemaParser.serialize_job_for_import(job_list, many=True))
@wrap_response(parse_method="parse_job",
parse_many=False,
default_exc=SaveError)
def create_job(self, job):
"""Create a new Job
Args:
job (Job): New Job definition
Returns:
Job: The newly-created Job
"""
return self.client.post_jobs(SchemaParser.serialize_job(job))
@wrap_response(return_boolean=True, default_exc=DeleteError)
def remove_job(self, job_id):
"""Remove a unique Job
Args:
job_id (str): The Job ID
Returns:
bool: True if removal was successful
Raises:
DeleteError: Couldn't remove Job
"""
return self.client.delete_job(job_id)
def pause_job(self, job_id):
"""Pause a Job
Args:
job_id (str): The Job ID
Returns:
Job: The updated Job
"""
return self._patch_job(job_id,
[PatchOperation("update", "/status", "PAUSED")])
def resume_job(self, job_id):
"""Resume a Job
Args:
job_id (str): The Job ID
Returns:
Job: The updated Job
"""
return self._patch_job(
job_id, [PatchOperation("update", "/status", "RUNNING")])
def execute_job(self, job_id, reset_interval=False):
"""Execute a Job
Args:
job_id (str): The Job ID
reset_interval (bool): Restarts the job's interval time to now if
the job's trigger is an interval
Returns:
Request: The returned request
"""
return self.client.post_execute_job(job_id, reset_interval)
@wrap_response(parse_method="parse_resolvable")
def upload_bytes(self, data):
# type: (bytes) -> Any
"""Upload a file
Args:
data: The bytes to upload
Returns:
The bytes Resolvable
"""
return self.client.post_file(data)
def download_bytes(self, file_id):
# type: (str) -> bytes
"""Download bytes
Args:
file_id: Id of bytes to download
Returns:
The bytes data
"""
return self.client.get_file(file_id).content
@wrap_response(parse_method="parse_resolvable")
def upload_file(self, path):
# type: (Union[str, Path]) -> Any
"""Upload a file
Args:
path: Path to file
Returns:
The file Resolvable
"""
# As of now this just converts the data param to bytes and uses the bytes API
# Ideally this would fail-over to using the chunks API if necessary
with open(path, "rb") as f:
bytes_data = f.read()
return self.client.post_file(bytes_data)
def download_file(self, file_id, path):
# type: (str, Union[str, Path]) -> Union[str, Path]
"""Download a file
Args:
file_id: The File id.
path: Location for downloaded file
Returns:
Path to downloaded file
"""
data = self.download_bytes(file_id)
with open(path, "wb") as f:
f.write(data)
return path
@wrap_response(parse_method="parse_resolvable")
def upload_chunked_file(self,
file_to_upload,
desired_filename=None,
file_params=None):
"""Upload a given file to the Beer Garden server.
Args:
file_to_upload: Can either be an open file descriptor or a path.
desired_filename: The desired filename, if none is provided it
will use the basename of the file_to_upload
file_params: The metadata surrounding the file.
Valid Keys: See brewtils File model
Returns:
A BG file ID.
"""
default_file_params = {}
# Establish the file descriptor
if isinstance(file_to_upload, six.string_types):
try:
fd = open(file_to_upload, "rb")
except Exception:
raise ValidationError(
"Could not open the requested file name.")
require_close = True
else:
fd = file_to_upload
require_close = False
try:
default_file_params["file_name"] = desired_filename or fd.name
except AttributeError:
default_file_params["file_name"] = "no_file_name_provided"
# Determine the file size
cur_cursor = fd.tell()
default_file_params["file_size"] = fd.seek(0, 2) - cur_cursor
fd.seek(cur_cursor)
if file_params is not None:
file_params["file_size"] = default_file_params["file_size"]
# Set the parameters to be sent
file_params = file_params or dict(default_file_params, **
self._default_file_params)
try:
response = self.client.post_chunked_file(
fd, file_params, current_position=cur_cursor)
fd.seek(cur_cursor)
finally:
if require_close:
fd.close()
if not response.ok:
handle_response_failure(response, default_exc=SaveError)
# The file post is best effort; make sure to verify before we let the
# user do anything with it
file_id = response.json()["details"]["file_id"]
valid, meta = self._check_chunked_file_validity(file_id)
if not valid:
# Clean up if you can
self.client.delete_chunked_file(file_id)
raise ValidationError("Error occurred while uploading file %s" %
default_file_params["file_name"])
return response
def download_chunked_file(self, file_id):
"""Download a chunked file from the Beer Garden server.
Args:
file_id: The beer garden-assigned file id.
Returns:
A file object
"""
(valid, meta) = self._check_chunked_file_validity(file_id)
file_obj = BytesIO()
if valid:
for x in range(meta["number_of_chunks"]):
resp = self.client.get_chunked_file(file_id,
params={"chunk": x})
if resp.ok:
data = resp.json()["data"]
file_obj.write(b64decode(data))
else:
raise ValueError("Could not fetch chunk %d" % x)
else:
raise ValidationError("Requested file %s is incomplete." % file_id)
file_obj.seek(0)
return file_obj
def delete_chunked_file(self, file_id):
"""Delete a given file on the Beer Garden server.
Args:
file_id: The beer garden-assigned file id.
Returns:
The API response
"""
return self.client.delete_chunked_file(file_id)
def forward(self, operation, **kwargs):
"""Forwards an Operation
Args:
operation: The Operation to be forwarded
**kwargs: Keyword arguments to pass to Requests session call
Returns:
The API response
"""
return self.client.post_forward(
SchemaParser.serialize_operation(operation), **kwargs)
@wrap_response(parse_method="parse_principal",
parse_many=False,
default_exc=FetchError)
def get_user(self, user_identifier):
"""Find a user
Args:
user_identifier (str): User ID or username
Returns:
Principal: The User
"""
return self.client.get_user(user_identifier)
def who_am_i(self):
"""Find user using the current set of credentials
Returns:
Principal: The User
"""
return self.get_user(self.client.username or "anonymous")
@wrap_response(return_boolean=True)
def rescan(self):
"""Rescan local plugin directory
Returns:
bool: True if rescan was successful
"""
return self.client.patch_admin(payload=SchemaParser.serialize_patch(
PatchOperation(operation="rescan")))
@wrap_response(return_boolean=True, default_exc=DeleteError)
def _remove_system_by_id(self, system_id):
if system_id is None:
raise DeleteError("Cannot delete a system without an id")
return self.client.delete_system(system_id)
@wrap_response(parse_method="parse_job",
parse_many=False,
default_exc=SaveError)
def _patch_job(self, job_id, operations):
return self.client.patch_job(
job_id, SchemaParser.serialize_patch(operations, many=True))
def _check_chunked_file_validity(self, file_id):
"""Verify a chunked file
Args:
file_id: The BG-assigned file id.
Returns:
A tuple containing the result and supporting metadata, if available
"""
response = self.client.get_chunked_file(file_id,
params={"verify": True})
if not response.ok:
return False, None
metadata_json = response.json()
if "valid" in metadata_json and metadata_json["valid"]:
return True, metadata_json
else:
return False, metadata_json
