abstract
AbstractHardwareProperty2
Implement an automomous property.
Source code in daiquiri/core/hardware/abstract/__init__.py
connect_hardware(self, obj)
emit_update(self, value)
To be called by the property itself when the hardware property have changed
read_hardware(self, obj)
HardwareObject
Base HardwareObject from which all inherit
The base hardware object defines the objects procotol, type, its properties and callables schema, and mechanisms to subscribe to property changes
Attributes:
Name | Type | Description |
---|---|---|
_object |
obj |
The instance of the control system object. |
_protocol |
str |
The protocol for this object, i.e. bliss |
_type |
str |
The object type, i.e. motor, shutter |
Source code in daiquiri/core/hardware/abstract/__init__.py
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|
call(self, function, value, **kwargs)
Calls a function on a hardware object
First checks the function is defined in the objects callables schema, then delegates to the local call implementation _call
Parameters:
Name | Type | Description | Default |
---|---|---|---|
function |
str |
The function to call. |
required |
value |
The value to call the function with. |
required |
Returns:
Type | Description |
---|---|
The the result from the object function if the function exists otherwise rasises an exception |
Source code in daiquiri/core/hardware/abstract/__init__.py
def call(self, function, value, **kwargs):
"""Calls a function on a hardware object
First checks the function is defined in the objects
callables schema, then delegates to the local call
implementation _call
Args:
function (str): The function to call.
value: The value to call the function with.
Returns:
The the result from the object function if the function exists
otherwise rasises an exception
"""
if not self._online:
return
if function in self._callables:
value = self._callables.validate(function, value)
# try:
ret = self._call(function, value, **kwargs)
if ret:
return ret
else:
return True
# except Exception as e:
# return e
else:
raise KeyError("Unknown function {fn}".format(fn=function))
get(self, prop)
Get a property from a hardware object
First checks the property is defined in the objects property schema, then delegates to the local getter implementation _get
Parameters:
Name | Type | Description | Default |
---|---|---|---|
prop |
str |
The property to retreive. |
required |
Returns:
Type | Description |
---|---|
The property value if the property exists, otherwise rasises an exception |
Source code in daiquiri/core/hardware/abstract/__init__.py
def get(self, prop: str):
"""Get a property from a hardware object
First checks the property is defined in the objects
property schema, then delegates to the local getter
implementation _get
Arguments:
prop: The property to retreive.
Returns:
The property value if the property exists, otherwise
rasises an exception
"""
if not self._online:
return
if prop in self._properties:
value = self._get(prop)
return value
else:
raise KeyError("Unknown property {p}".format(p=prop))
get_subobject_configs(self)
schema(self)
Returns the schema for the current hardware object
The hardware schema is built from the HardwareObjectBaseSchema
and the object specific _property and _callable schema
(both instances of HardwareSchema
)
Returns:
Type | Description |
---|---|
An instance of a schema |
Source code in daiquiri/core/hardware/abstract/__init__.py
def schema(self):
"""Returns the schema for the current hardware object
The hardware schema is built from the `HardwareObjectBaseSchema`
and the object specific _property and _callable schema
(both instances of `HardwareSchema`)
Returns:
An instance of a schema
"""
schema = type(
f"HW{self.schema_name()}Schema",
(HardwareObjectBaseSchema,),
{
"properties": fields.Nested(self._properties.__class__),
"callables": fields.Nested(self._callables.__class__),
},
)
return schema()
set(self, prop, value)
Set a property on a hardware object
First checks the property is defined in the objects property schema, then delegates to the local setter implementation _set
Parameters:
Name | Type | Description | Default |
---|---|---|---|
prop |
str |
The property to set. |
required |
value |
The property to set. |
required |
Returns:
Type | Description |
---|---|
The the result from the object setter if the property exists otherwise raises an exception |
Source code in daiquiri/core/hardware/abstract/__init__.py
def set(self, prop: str, value):
"""Set a property on a hardware object
First checks the property is defined in the objects
property schema, then delegates to the local setter
implementation _set
Arguments:
prop: The property to set.
value: The property to set.
Returns:
The the result from the object setter if the property exists
otherwise raises an exception
"""
if not self._online:
return
if prop in self._properties:
if self._properties.read_only(prop):
raise AttributeError("Property {p} is read only".format(p=prop))
value = self._properties.validate(prop, value)
return self._set(prop, value)
else:
raise KeyError("Unknown property {p}".format(p=prop))
set_online(self, state)
Set the online state of the device
Sets the state and execute any registered callbacks
Parameters:
Name | Type | Description | Default |
---|---|---|---|
state |
boolean |
Set the online state |
required |
Source code in daiquiri/core/hardware/abstract/__init__.py
state(self, **kwargs)
Gets the current state of a hardware object
Builds a dictionary of the basic info of the object, plus its properties, and callables.
Returns:
Type | Description |
---|---|
A dict of the hardware object status |
Source code in daiquiri/core/hardware/abstract/__init__.py
def state(self, **kwargs):
"""Gets the current state of a hardware object
Builds a dictionary of the basic info of the object, plus its properties, and
callables.
Returns:
A dict of the hardware object status
"""
info = {
k: getattr(self, "_" + k)
for k in ["name", "type", "id", "protocol", "online"]
}
info["callables"] = [k for k in self._callables]
info["errors"] = []
properties = {}
for p in self._properties:
try:
properties[p] = self.get(p)
except Exception as e:
properties[p] = None
info["online"] = False
info["errors"].append(
{
"property": p,
"exception": str(e),
"traceback": "".join(traceback.format_tb(e.__traceback__)),
}
)
logger.exception(f"Couldn't get property `{p}` for `{self.name()}`")
try:
info["properties"] = self._properties.dump(properties)
except Exception:
logger.error(
"Error while serializing %s (%s)",
self._name,
properties,
exc_info=True,
)
info["properties"] = {}
info["online"] = False
try:
info["properties"]["state_ok"] = self.state_ok()
except Exception:
logger.debug(
f"Could not determine `state_ok` for {self._name}", exec_info=True
)
info["require_staff"] = self.require_staff()
info["alias"] = self.alias()
info["user_tags"] = self.user_tags()
return info
state_ok(self)
Returns if the current object state is ok
subscribe(self, prop, fn)
Subscribe to property changes on the hardware object
Add a function to a list of callbacks for when properties on the object change
Parameters:
Name | Type | Description | Default |
---|---|---|---|
prop |
str |
The property to subscribe to. Can pass 'all' to subscribe to all changes |
required |
fn |
(:callable) The function to call when this property changes. |
required |
Source code in daiquiri/core/hardware/abstract/__init__.py
def subscribe(self, prop: str, fn):
"""Subscribe to property changes on the hardware object
Add a function to a list of callbacks for when properties on the object change
Arguments:
prop: The property to subscribe to. Can pass 'all' to subscribe to all changes
fn: (:callable) The function to call when this property changes.
"""
if not callable(fn):
raise AttributeError("Callback function must be callable")
if prop in self._properties or prop == "all":
if not (prop in self._callbacks):
self._callbacks[prop] = []
if not (fn in self._callbacks[prop]):
self._callbacks[prop].append(fn)
else:
raise KeyError(f"No such property: {prop}")
subscribe_online(self, fn)
Subscribe to the online state of the hardware object
Add a function to a list of callbacks for when the online state of the object change
Parameters:
Name | Type | Description | Default |
---|---|---|---|
fn |
(:callable) The function to call when this property changes. |
required |
Source code in daiquiri/core/hardware/abstract/__init__.py
def subscribe_online(self, fn):
"""Subscribe to the online state of the hardware object
Add a function to a list of callbacks for when the online state of the object change
Args:
fn: (:callable) The function to call when this property changes.
"""
if not callable(fn):
raise AttributeError("Callback function must be callable")
if not (fn in self._online_callbacks):
self._online_callbacks.append(fn)
unsubscribe(self, prop, fn)
Unsubscribe from a property change on the hardware object
Parameters:
Name | Type | Description | Default |
---|---|---|---|
prop |
str |
The property to unsubscribe from. |
required |
fn |
(:callable) The function to unsubscribe |
required |
Source code in daiquiri/core/hardware/abstract/__init__.py
def unsubscribe(self, prop: str, fn):
"""Unsubscribe from a property change on the hardware object
Arguments:
prop: The property to unsubscribe from.
fn: (:callable) The function to unsubscribe
"""
if prop in self._callbacks:
if fn in self._callbacks[prop]:
# logger.debug("Unsubscribe from property %s, %s", prop, fn)
self._callbacks[prop].remove(fn)
return True
return False
HardwareProperty
Describe a property from the device controls system.
Provides translation function between the controls system specific nomenclature and the abstract one. This can be overwritten.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
name |
str |
Name used by the controls system |
required |
Source code in daiquiri/core/hardware/abstract/__init__.py
translate_from(self, value)
Translate the value from the controls layer to the abstraction layer i.e for getters
Parameters:
Name | Type | Description | Default |
---|---|---|---|
value |
The property value to translate. |
required |
Returns:
Type | Description |
---|---|
The translated value |
translate_to(self, value)
Translate the value to the controls layer from the abstraction layer i.e for setters
Parameters:
Name | Type | Description | Default |
---|---|---|---|
value |
The property value to translate. |
required |
Returns:
Type | Description |
---|---|
The translated value |
MappedHardwareObject
Hardware object that maps properties via a simple dict
HardwareObject that has a simple map between abstract properties and their actual properties on the object with fallback to a function on the parent
Source code in daiquiri/core/hardware/abstract/__init__.py
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|
ProtocolHandler
A protocol handler instantiates a hardware object from a specific protocol
i.e. initialise a motor object from bliss, or a shutter from tango
Source code in daiquiri/core/hardware/abstract/__init__.py
disconnect(self)
get(self, *args, **kwargs)
Get the specific object from the protocol handler.
This function checks that kwargs conforms to Schema defined for the protocol handler (see core/hardware/bliss/init.py for a concrete example)
Returns:
Type | Description |
---|---|
The hardware object instance for the specific protocol |
Source code in daiquiri/core/hardware/abstract/__init__.py
@abstractmethod
def get(self, *args, **kwargs):
"""Get the specific object from the protocol handler.
This function checks that kwargs conforms to Schema defined for the
protocol handler (see core/hardware/bliss/__init__.py for a concrete example)
Returns:
The hardware object instance for the specific protocol
"""
pass
camera
Camera
Source code in daiquiri/core/hardware/abstract/camera.py
presetmanager
PresetmanagerCallablesSchema
marshmallow-model
scansource
ScanSource
The scan source interface
Source code in daiquiri/core/hardware/abstract/scansource.py
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|
close(self)
get_conversion(self)
Get the mca conversion factors to convert bins to energy
energy = zero + bin * scale
Source code in daiquiri/core/hardware/abstract/scansource.py
get_scan_data(self, scanid, per_page=25, page=1)
Return scan data for the specific scan
Parameters:
Name | Type | Description | Default |
---|---|---|---|
scanid |
int |
The scan id |
required |
per_page |
int |
Number of items to return per page |
25 |
page |
int |
Page of data to return |
1 |
Returns:
Type | Description |
---|---|
data (dict) |
A valid |
Source code in daiquiri/core/hardware/abstract/scansource.py
get_scan_image(self, scanid, node_name, image_no)
Return a scan image for the specific scan
Parameters:
Name | Type | Description | Default |
---|---|---|---|
scanid |
int |
The scan id |
required |
node_name |
str |
The node for the requested image |
required |
image_no |
int |
The image number to return |
required |
Returns:
Type | Description |
---|---|
data (dict) |
A valid |
Source code in daiquiri/core/hardware/abstract/scansource.py
@abstractmethod
def get_scan_image(self, scanid, node_name, image_no):
"""Return a scan image for the specific scan
Args:
scanid (int): The scan id
node_name (str): The node for the requested image
image_no (int): The image number to return
Returns:
data (dict): A valid `ScanDataSchema` dict
"""
pass
get_scan_spectra(self, scanid, point=0, allpoints=False)
Return a scan specific for the specific scan
Parameters:
Name | Type | Description | Default |
---|---|---|---|
scanid |
int |
The scan id |
required |
point |
int |
The image number to return |
0 |
Returns:
Type | Description |
---|---|
data (dict) |
A valid |
Source code in daiquiri/core/hardware/abstract/scansource.py
get_scans(self, scanid=None)
Get a list of scans
Returns a list of scan dicts, can be filtered to only scanid to return details of a specific scan
Parameters:
Name | Type | Description | Default |
---|---|---|---|
scanid |
int |
Scan id to return |
None |
Returns:
Type | Description |
---|---|
scans (list) |
A list of valid |
Source code in daiquiri/core/hardware/abstract/scansource.py
watch_end_scan(self, fn)
Register a callback for a scan ends
Source code in daiquiri/core/hardware/abstract/scansource.py
def watch_end_scan(self, fn):
"""Register a callback for a scan ends"""
if not callable(fn):
raise AttributeError("Callback function must be callable")
if not (fn in self._end_scan_watchers):
self._end_scan_watchers.append(fn)
else:
logger.warning(
"Function {f} is already subscribed to end scan".format(f=fn)
)
watch_new_0d_data(self, fn)
Register a callback for when there is new 0d data for a scan
Source code in daiquiri/core/hardware/abstract/scansource.py
def watch_new_0d_data(self, fn):
"""Register a callback for when there is new 0d data for a scan"""
if not callable(fn):
raise AttributeError("Callback function must be callable")
if not (fn in self._new_0d_data_watchers):
self._new_0d_data_watchers.append(fn)
else:
logger.warning(
"Function {f} is already subscribed to new 0d data".format(f=fn)
)
watch_new_data(self, fn)
Register a callback for when there is new data for a scan
Source code in daiquiri/core/hardware/abstract/scansource.py
def watch_new_data(self, fn):
"""Register a callback for when there is new data for a scan"""
if not callable(fn):
raise AttributeError("Callback function must be callable")
if not (fn in self._new_data_watchers):
self._new_data_watchers.append(fn)
else:
logger.warning(
"Function {f} is already subscribed to new data".format(f=fn)
)
watch_new_scan(self, fn)
Register a callback for when a new scan is started
Source code in daiquiri/core/hardware/abstract/scansource.py
def watch_new_scan(self, fn):
"""Register a callback for when a new scan is started"""
if not callable(fn):
raise AttributeError("Callback function must be callable")
if not (fn in self._new_scan_watchers):
self._new_scan_watchers.append(fn)
else:
logger.warning(
"Function {f} is already subscribed to new scan".format(f=fn)
)
service
ServiceStates
See http://supervisord.org/subprocess.html#process-states