class Temperature(Actor):
"""
Measure temperature. Takes the period of measurements, in seconds, as input.
Outputs:
centigrade : temperature, in centigrade
"""
@manage(['period', 'timer', 'temperature'])
def init(self, period):
self.period = period
self.temperature = calvinsys.open(self, "io.temperature")
self.timer = calvinsys.open(self, "sys.timer.once", period=0)
@stateguard(lambda self: calvinsys.can_read(self.temperature) and calvinsys
.can_write(self.timer))
@condition([], ['centigrade'])
def read_measurement(self):
value = calvinsys.read(self.temperature)
# reset timer
calvinsys.write(self.timer, self.period)
return (value, )
@stateguard(lambda self: calvinsys.can_read(self.timer) and calvinsys.
can_write(self.temperature))
@condition([], [])
def start_measurement(self):
# ack timer
calvinsys.read(self.timer)
# start measurement
calvinsys.write(self.temperature, True)
action_priority = (read_measurement, start_measurement)
requires = ['io.temperature', 'sys.timer.once']
class Distance(Actor):
"""
Measure distance. Takes the frequency of measurements, in Hz, as input.
Outputs:
meters : distance, in meters
"""
@manage(['frequency'])
def init(self, frequency):
self.frequency = frequency
self.setup()
def setup(self):
_log.info("setup")
self._distance = calvinsys.open(self, "io.distance")
self._timer = calvinsys.open(self, "sys.timer.repeating")
calvinsys.write(self._timer, 1.0/self.frequency)
def will_migrate(self):
calvinsys.close(self._distance)
calvinsys.close(self._timer)
self._distance = None
self._timer = None
def did_migrate(self):
self.setup()
def will_end(self):
if self._distance:
calvinsys.close(self._distance)
if self._timer :
calvinsys.close(self._timer)
@stateguard(lambda self: calvinsys.can_read(self._distance))
@condition([], ['meters'])
def read_measurement(self):
distance = calvinsys.read(self._distance)
return (distance,)
@stateguard(lambda self: calvinsys.can_read(self._timer) and calvinsys.can_write(self._distance))
@condition([], [])
def start_measurement(self):
calvinsys.read(self._timer)
calvinsys.write(self._distance, True)
action_priority = (read_measurement, start_measurement)
requires = ['io.distance', 'sys.timer.repeating']
class Knob(Actor):
"""
Read a knob to see which way it turned.
Outputs:
direction: clockwise or anti-clockwise
"""
@manage([])
def init(self):
self.setup()
def setup(self):
self._knob = calvinsys.open(self, "io.knob")
def will_migrate(self):
calvinsys.close(self._knob)
self._knob = None
def will_end(self):
if self._knob:
calvinsys.close(self._knob)
def did_migrate(self):
self.setup()
@stateguard(lambda self: calvinsys.can_read(self._knob))
@condition([], ["direction"])
def trigger(self):
return (calvinsys.read(self._knob), )
action_priority = (trigger, )
requires = ['io.knob']
test_calvinsys = {'io.knob': {'read': [-1, 1, 0, 1]}}
test_set = [{'outports': {'direction': [-1, 1, 0, 1]}}]
class Accelerometer(Actor):
"""
Measure the acceleration. Takes the period of measurements, in microseconds, as input.
Outputs:
acceleration : Acceleration as a dict with the x,y, and z directions.
"""
@manage(['level', 'period'])
def init(self, period):
self.period = period
self.level = calvinsys.open(self,
"io.accelerometer",
period=self.period)
@stateguard(lambda self: calvinsys.can_read(self.level))
@condition([], ['acceleration'])
def read_measurement(self):
level = calvinsys.read(self.level)
return (level, )
action_priority = (read_measurement, )
requires = ['io.accelerometer']
test_kwargs = {'period': 10}
test_calvinsys = {'io.accelerometer': {'read': [10, 12, 0, 5]}}
test_set = [{'outports': {'acceleration': [10, 12, 0, 5]}}]
class LightBreaker(Actor):
"""
React to changes in a sensor.
Output:
open : state true=closed, false=open
"""
@manage(include=[])
def init(self):
self.setup()
def setup(self):
self.sensor = calvinsys.open(self, "io.lightbreaker")
def will_migrate(self):
calvinsys.close(self.sensor)
self.sensor = None
def will_end(self):
if self.sensor:
calvinsys.close(self.sensor)
def did_migrate(self):
self.setup()
@stateguard(lambda self: calvinsys.can_read(self.sensor))
@condition([], ["open"])
def state_change(self):
value = calvinsys.read(self.sensor)
return (True if value else False, )
action_priority = (state_change, )
requires = ['io.lightbreaker']
class HallEffect(Actor):
"""
React to presence of magnetic field.
Output:
state : true if magnetic field present, false otherwise
"""
@manage(include=[])
def init(self):
self.setup()
def setup(self):
self.sensor = calvinsys.open(self, "io.hallswitch")
def will_migrate(self):
calvinsys.close(self.sensor)
self.sensor = None
def will_end(self):
if self.sensor:
calvinsys.close(self.sensor)
def did_migrate(self):
self.setup()
@stateguard(lambda self: calvinsys.can_read(self.sensor))
@condition([], ["state"])
def state_change(self):
value = calvinsys.read(self.sensor)
return (True if value else False, )
action_priority = (state_change, )
requires = ['io.hallswitch']
class Button(Actor):
"""
Handle a button and trigger on state changes.
Output:
state : Button state 1=pressed, 0=not pressed
"""
@manage(include=["text"])
def init(self, text="Button"):
self.button = None
self.text = text
self.setup()
def setup(self):
self.button = calvinsys.open(self, "io.button", text=self.text)
def will_migrate(self):
calvinsys.close(self.button)
def will_end(self):
calvinsys.close(self.button)
def did_migrate(self):
self.setup()
@stateguard(lambda self: self.button and calvinsys.can_read(self.button))
@condition([], ["state"])
def trigger(self):
return (calvinsys.read(self.button), )
action_priority = (trigger, )
requires = ['io.button']
class RecTimer(Actor):
"""
After first token, pass on token once every 'delay' seconds. *Deprecated*
This actor is identical to ClassicDelay.
Input :
token: anything
Outputs:
token: anything
"""
@manage(['timer', 'delay', 'started'])
def init(self, delay):
self.delay = delay
self.timer = calvinsys.open(self, "sys.timer.repeating")
self.started = False
@stateguard(lambda self: not self.started)
@condition(['token'], ['token'])
def start_timer(self, token):
self.started = True
calvinsys.write(self.timer, self.delay)
return (token, )
@stateguard(lambda self: calvinsys.can_read(self.timer))
@condition(['token'], ['token'])
def passthrough(self, token):
calvinsys.read(self.timer)
return (token, )
action_priority = (start_timer, passthrough)
requires = ['sys.timer.repeating']
class SimpleUDPListener(Actor):
"""
Listen for UDP messages on a given port. Address is of the form "ip:port" (note: ip is ipv4)
Output:
data : data in packets received on the UDP port will forwarded as tokens.
"""
@manage(['host', 'port'])
def init(self, address):
self.host, self.port = address.split(':')
try:
self.port = int(self.port)
except ValueError:
self.port = 0
self.setup()
def did_migrate(self):
self.setup()
def setup(self):
self.listener = calvinsys.open(self,
"network.udplistener",
host=self.host,
port=self.port)
@stateguard(
lambda self: self.listener and calvinsys.can_read(self.listener))
@condition(action_output=['data'])
def receive(self):
message = calvinsys.read(self.listener)
return (message["data"], )
action_priority = (receive, )
requires = ['network.udplistener']
class Counter(Actor):
"""
Produce next integer in a sequence 1,2,3,...
Outputs:
integer : Integer
"""
@manage(['count', 'stopped', 'schedule'])
def init(self):
self.count = 0
self.stopped = False
self.schedule = calvinsys.open(self, "sys.schedule")
@stateguard(lambda self: not self.stopped and calvinsys.can_read(self.schedule))
@condition(action_output=['integer'])
def cnt(self):
calvinsys.read(self.schedule) # ack
calvinsys.can_write(self.schedule)
calvinsys.write(self.schedule, 0) #reset
self.count += 1
return (self.count, )
action_priority = (cnt,)
requires = ['sys.schedule']
def report(self, **kwargs):
self.stopped = kwargs.get("stopped", self.stopped)
return self.count
NTOKENS = 10
test_calvinsys = {'sys.schedule': {'read': ["dummy_data_read"]*NTOKENS, 'write': [0]*NTOKENS}}
test_set = [
{'outports': {'integer': list(range(1, NTOKENS+1))}}
]
class Source(Actor):
"""
Data source.
{
"id": "ns=2;s=/Channel/Parameter/rpa[u1,115]",
"tag": "R115",
"type": "Double",
"value": 0.0,
"serverts": "2017-03-20 15:42:41.600000",
"sourcets": "2017-03-20 15:42:41.542000",
"calvints": 1490021096110,
"status": 0
"info": "description given for parameter"
}
Output:
parameter : description of parameter as shown above
"""
@manage([])
def init(self, tags=None):
if isinstance(tags, basestring):
tags = [tags]
self.source = calvinsys.open(self, "data.source", tags=tags)
@stateguard(lambda self: calvinsys.can_read(self.source))
@condition([], ["parameter"])
def send_data(self):
param = calvinsys.read(self.source)
return (param, )
action_priority = (send_data, )
requires = ['data.source']
class RandomDelay(Actor):
"""
Sends input on after a random delay has passed.
Input :
token : anything
Outputs:
token : anything
"""
@manage(['timers'])
def init(self):
self.timers = []
def new_timer(self):
timer = calvinsys.open(self, "sys.timer.once")
rng = calvinlib.use("math.random")
delay = rng.random_integer(lower=0, upper=2)
calvinsys.write(timer, delay)
return timer
@condition(['token'])
def token_available(self, token):
self.timers.append({'token': token, 'timer': self.new_timer()})
@stateguard(lambda self: len(self.timers) > 0 and calvinsys.can_read(
self.timers[0]['timer']))
@condition([], ['token'])
def timeout(self):
item = self.timers.pop(0)
calvinsys.read(item['timer'])
calvinsys.close(item['timer'])
return (item['token'], )
action_priority = (timeout, token_available)
requires = ['sys.timer.once', 'math.random']
class Constant(Actor):
"""
Send predetermined data on output. Never ending sequence.
Outputs:
token : given data
"""
@manage(['data', 'schedule'])
def init(self, data):
self.data = data
self.schedule = calvinsys.open(self, "sys.schedule")
@stateguard(lambda self: calvinsys.can_read(self.schedule))
@condition([], ['token'])
def timeout(self):
calvinsys.read(self.schedule) # ack
calvinsys.can_write(self.schedule)
calvinsys.write(self.schedule, 0) #reset
return (self.data, )
action_priority = (timeout, )
requires = ['sys.schedule']
test_kwargs = {'data': "data_to_forward"}
NTOKENS = 10
test_calvinsys = {
'sys.schedule': {
'read': ["dummy_data_read"] * NTOKENS,
'write': [0] * NTOKENS
}
}
test_set = [{'outports': {'token': ["data_to_forward"] * NTOKENS}}]
class Switch(Actor):
"""
Creates a on/off switch.
Output:
state : 0/1 according to switch state
"""
@manage([])
def init(self):
self.switch = None
self.setup()
def setup(self):
self.switch = calvinsys.open(self, "io.switch")
def will_migrate(self):
calvinsys.close(self.switch)
def did_migrate(self):
self.setup()
def will_end(self):
calvinsys.close(self.switch)
@stateguard(lambda self: self.switch and calvinsys.can_read(self.switch))
@condition([], ["state"])
def action(self):
state = calvinsys.read(self.switch)
return (state, )
action_priority = (action, )
requires = ['io.switch']
class TiltSwitch(Actor):
"""
React to changes in a TiltSwitch.
Output:
open : state true=closed, false=open
"""
@manage(include=[])
def init(self):
self.setup()
def setup(self):
self.switch = calvinsys.open(self, "io.tiltswitch")
def will_migrate(self):
calvinsys.close(self.switch)
self.switch = None
def will_end(self):
if self.switch:
calvinsys.close(self.switch)
def did_migrate(self):
self.setup()
@stateguard(lambda self: calvinsys.can_read(self.switch))
@condition([], ["open"])
def state_change(self):
value = calvinsys.read(self.switch)
return (True if value else False, )
action_priority = (state_change, )
requires = ['io.tiltswitch']
class TriggeredTemperature(Actor):
"""
Measure temperature.
Inputs:
trigger : any token triggers meausurement
Outputs:
centigrade : temperature, in centigrade
"""
@manage(['temperature'])
def init(self):
self.temperature = calvinsys.open(self, "io.temperature")
@stateguard(lambda self: calvinsys.can_read(self.temperature))
@condition([], ['centigrade'])
def read_measurement(self):
data = calvinsys.read(self.temperature)
return (data, )
@stateguard(lambda self: calvinsys.can_write(self.temperature))
@condition(['trigger'], [])
def trigger_measurement(self, _):
calvinsys.write(self.temperature, True)
action_priority = (read_measurement, trigger_measurement)
requires = ['io.temperature']
class TriggeredSoilMoisture(Actor):
"""
Measure the moisture level in the soil.
Inputs:
trigger : any token triggers meausurement
Outputs:
level : moisture level, in percent
"""
@manage(exclude=['level'])
def init(self):
self.setup()
def setup(self):
self.level = calvinsys.open(self, "io.soilmoisture")
def teardown(self):
calvinsys.close(self.level)
def will_migrate(self):
self.teardown()
def did_migrate(self):
self.setup()
def will_end(self):
self.teardown()
@stateguard(lambda self: calvinsys.can_write(self.level))
@condition(['trigger'], [])
def trigger_measurement(self, _):
calvinsys.write(self.level, True)
@stateguard(lambda self: calvinsys.can_read(self.level))
@condition([], ['level'])
def read_measurement(self):
level = calvinsys.read(self.level)
return (level, )
action_priority = (read_measurement, trigger_measurement)
requires = ['io.soilmoisture']
test_calvinsys = {
'io.soilmoisture': {
'read': [50, 40],
'write': [True, True]
}
}
test_set = [{
'inports': {
'trigger': [True, "True"]
},
'outports': {
'level': [50, 40]
}
}]
class HTTPPut(Actor):
"""
Post data to URL
Input:
URL : URL to put to
data : Data to put
params : dictionary with query parameters (optional)
headers: dictionary with headers to include in request (optional)
auth : dictionary with authtype (basic/digest), username and password (optional)
Output:
status: HTTP status of request
headers: dictionary of response headers
data : body of response (only if body is non-empty)
"""
@manage()
def init(self):
self.cmd = calvinsys.open(self, "http.put")
self.response = None
@stateguard(lambda actor: calvinsys.can_write(actor.cmd))
@condition(action_input=['URL', 'data', 'params', 'headers', 'auth'])
def new_request(self, url, data, params, headers, auth):
calvinsys.write(
self.cmd, {
"url": url,
"data": data,
"params": params,
"headers": headers,
"auth": auth
})
@stateguard(lambda actor: calvinsys.can_read(actor.cmd))
@condition()
def handle_reply(self):
self.response = calvinsys.read(self.cmd)
@stateguard(lambda actor: actor.response and actor.response.get("body"))
@condition(action_output=['status', 'headers', 'data'])
def reply_with_body(self):
response = self.response
self.response = None
return (response.get("status"), response.get("headers"),
response.get("body"))
@stateguard(lambda actor: actor.response and not actor.response.get("body")
)
@condition(action_output=['status', 'headers'])
def reply_without_body(self):
response = self.response
self.response = None
return (response.get("status"), response.get("headers"))
action_priority = (new_request, handle_reply, reply_with_body,
reply_without_body)
requires = ['http.put']
class LocationWeather(Actor):
"""
Get current weather at selected destination, given as "city,country code", "city", or ",country code"
Input:
location : location to fetch weather from
Output:
forecast: weather at given city, or null on error
"""
@manage([])
def init(self):
self.setup()
def did_migrate(self):
self.setup()
def setup(self):
self._service = calvinsys.open(self, "weather")
def teardown(self):
calvinsys.close(self._service)
def will_migrate(self):
self.teardown()
def will_end(self):
self.teardown()
@stateguard(
lambda self: self._service and calvinsys.can_write(self._service))
@condition(action_input=['location'])
def start_forecast(self, location):
calvinsys.write(self._service, location)
@stateguard(
lambda self: self._service and calvinsys.can_read(self._service))
@condition(action_output=['forecast'])
def finish_forecast(self):
forecast = calvinsys.read(self._service)
return (forecast, )
action_priority = (
start_forecast,
finish_forecast,
)
requires = ['weather']
test_calvinsys = {'weather': {'read': ["sunny"], 'write': ["Lund"]}}
test_set = [{
'inports': {
'location': ["Lund"]
},
'outports': {
'forecast': ["sunny"]
}
}]
def open_file(self, filename):
obj = calvinsys.open(self, "io.filesize", filename=filename)
if calvinsys.can_read(obj):
self.filelen = calvinsys.read(obj)
calvinsys.close(obj)
self.file = calvinsys.open(self,
"io.filereader",
filename=filename)
if self.file is None:
self.file_not_found = True
class TriggeredDistance(Actor):
"""
Measure distance.
Inputs:
trigger : any token triggers meausurement
Outputs:
meters : distance, in meters
"""
@manage([])
def init(self):
self.setup()
def setup(self):
self._distance = calvinsys.open(self, "io.distance")
def teardown(self):
if self._distance:
calvinsys.close(self._distance)
self._distance = None
def will_migrate(self):
self.teardown()
def did_migrate(self):
self.setup()
def will_end(self):
self.teardown()
@stateguard(lambda self: calvinsys.can_read(self._distance))
@condition([], ['meters'])
def read_measurement(self):
distance = calvinsys.read(self._distance)
return (distance, )
@stateguard(lambda self: calvinsys.can_write(self._distance))
@condition(['trigger'], [])
def trigger_measurement(self, _):
calvinsys.write(self._distance, True)
action_priority = (read_measurement, trigger_measurement)
requires = ['io.distance']
test_calvinsys = {'io.distance': {'read': [10, 12, 0, 5], 'write': [True]}}
test_set = [{
'inports': {
'trigger': [True]
},
'outports': {
'meters': [10, 12, 0, 5]
}
}]
class Distance(Actor):
"""
Measure distance. Takes the period of measurements, in seconds, as input.
Outputs:
meters : distance, in meters
"""
@manage(['period', 'distance', 'timer'])
def init(self, period):
self.period = period
self.distance = calvinsys.open(self, "io.distance")
self.timer = calvinsys.open(self, "sys.timer.repeating", period=period)
@stateguard(lambda self: calvinsys.can_read(self.distance))
@condition([], ['meters'])
def read_measurement(self):
value = calvinsys.read(self.distance)
return (value, )
@stateguard(lambda self: calvinsys.can_read(self.timer) and calvinsys.
can_write(self.distance))
@condition([], [])
def start_measurement(self):
calvinsys.read(self.timer)
calvinsys.write(self.distance, True)
action_priority = (read_measurement, start_measurement)
requires = ['io.distance', 'sys.timer.repeating']
test_kwargs = {'period': 10}
test_calvinsys = {
'io.distance': {
'read': [10, 12, 0, 5],
'write': [True]
},
'sys.timer.repeating': {
'read': ['dummy'],
'write': [10]
}
}
test_set = [{'outports': {'meters': [10, 12, 0, 5]}}]
class LocalWeather(Actor):
"""
Get current weather where runtime is located (or think it is located)
Input:
trigger : start fetching weather on any token
Output:
forecast: weather at preconfigured city, or null on error
"""
@manage([])
def init(self):
self.setup()
def did_migrate(self):
self.setup()
def setup(self):
self._service = calvinsys.open(self, "weather.local")
calvinsys.write(self._service, None)
def teardown(self):
calvinsys.close(self._service)
def will_migrate(self):
self.teardown()
def will_end(self):
self.teardown()
@stateguard(lambda self: self._service and calvinsys.can_write(self._service))
@condition(action_input=['trigger'])
def start_forecast(self, _):
calvinsys.write(self._service, None)
@stateguard(lambda self: self._service and calvinsys.can_read(self._service))
@condition(action_output=['forecast'])
def finish_forecast(self):
forecast = calvinsys.read(self._service)
return (forecast,)
action_priority = (start_forecast, finish_forecast,)
requires = ['weather.local']
test_calvinsys = {'weather.local': {'read': ["sunny"],
'write': [None, None]}}
test_set = [
{
'inports': {'trigger': [True]},
'outports': {'forecast': ["sunny"]}
}
]
class DelayToken(Actor):
"""
Sends input on after a given delay has passed. Preserves time between tokens.
Input :
token : anything
Outputs:
token : anything
"""
@manage(['delay', 'timers'])
def init(self, delay):
self.delay = delay
self.timers = []
def new_timer(self):
timer = calvinsys.open(self, "sys.timer.once", period=self.delay)
return timer
@condition(['token'])
def token_available(self, token):
self.timers.append({'token': token, 'timer': self.new_timer()})
@stateguard(lambda self: len(self.timers) > 0 and calvinsys.can_read(
self.timers[0]['timer']))
@condition([], ['token'])
def timeout(self):
item = self.timers.pop(0)
calvinsys.read(item['timer'])
calvinsys.close(item['timer'])
return (item['token'], )
action_priority = (timeout, token_available)
requires = ['sys.timer.once']
test_kwargs = {'delay': 20}
test_calvinsys = {
'sys.timer.once': {
'read': ["dummy", "dummy", "dummy", "dummy"],
'write': [20, 20, 20, 20]
}
}
test_set = [{
'inports': {
'token': ["a", "b", 1, 1]
},
'outports': {
'token': ["a", "b", 1, 1]
},
}]
class TriggeredRelativeHumidity(Actor):
"""
Read Relative Humidity when told to.
Inputs:
measure: Triggers a temperature reading
Outputs:
percent: The measured humidity in percent
"""
@manage([])
def init(self):
self.relhum = None
self.setup()
def setup(self):
self.relhum = calvinsys.open(self, 'io.humidity')
def did_migrate(self):
self.setup()
def will_end(self):
calvinsys.close(self.relhum)
@stateguard(lambda self: calvinsys.can_write(self.relhum))
@condition(['measure'], [])
def measure(self, _):
calvinsys.write(self.relhum, True)
@stateguard(lambda self: calvinsys.can_read(self.relhum))
@condition([], ['percent'])
def deliver(self):
humidity = calvinsys.read(self.relhum)
return (humidity, )
action_priority = (
deliver,
measure,
)
requires = ['io.humidity']
test_calvinsys = {'io.humidity': {'read': [50, 40], 'write': [True, True]}}
test_set = [{
'inports': {
'measure': [True, "True"]
},
'outports': {
'percent': [50, 40]
}
}]
class ObjectCounter(Actor):
"""
Counts objects in a base64 encoded jpg image
Inputs:
b64image: Image to analyze
Outputs:
objects: number of objects found in image
"""
@manage([])
def init(self):
self.setup()
def setup(self):
self._object_counter = calvinsys.open(self, "image.objectdetection")
def did_migrate(self):
self.setup()
@stateguard(lambda self: calvinsys.can_write(self._object_counter))
@condition(action_input=['b64image'])
def analyze(self, b64image):
calvinsys.write(self._object_counter, b64image)
@stateguard(lambda self: calvinsys.can_read(self._object_counter))
@condition(action_output=['objects'])
def report(self):
objects = calvinsys.read(self._object_counter)
return (objects, )
action_priority = (analyze, report)
requires = ['image.objectdetection']
test_calvinsys = {
'image.objectdetection': {
'read': ["dummy_data_read"],
'write': ["dummy_data_write"]
}
}
test_set = [{
'inports': {
'b64image': ["dummy_data_write"]
},
'outports': {
'objects': ["dummy_data_read"]
}
}]
class ImageSource(Actor):
"""
When token on input, get an image.
Inputs:
trigger: anything
Outputs:
b64image: generated image
"""
@manage(exclude=["_cam"])
def init(self):
self.setup()
def setup(self):
self._cam = calvinsys.open(self, "image.source")
def did_migrate(self):
self.setup()
def will_end(self):
calvinsys.close(self._cam)
@stateguard(lambda self: calvinsys.can_read(self._cam))
@condition(action_output=['b64image'])
def send_image(self):
image = calvinsys.read(self._cam)
return (image, )
@stateguard(lambda self: calvinsys.can_write(self._cam))
@condition(action_input=['trigger'])
def fetch_image(self, trigger):
calvinsys.write(self._cam, None)
action_priority = (fetch_image, send_image)
requires = ['image.source']
test_calvinsys = {'image.source': {'read': [1,0,1,0,0,1,0,1],
'write': [None, None, None, None]}}
test_set = [
{
'inports': {'trigger': [True, 1, "a", 0]},
'outports': {'b64image': [1,0,1,0,0,1,0,1]}
}
]
class FaceFinder(Actor):
"""
Finds and marks faces in a base64 encoded jpg image function
Inputs:
b64image: Image to analyze
Outputs:
b64image: New image with all detected faces marked
"""
@manage([])
def init(self):
self.setup()
def setup(self):
self._object_counter = calvinsys.open(self, "image.facefinding")
def did_migrate(self):
self.setup()
@stateguard(lambda self: calvinsys.can_write(self._object_counter))
@condition(action_input=['b64image'])
def analyze(self, b64image):
calvinsys.write(self._object_counter, b64image)
@stateguard(lambda self: calvinsys.can_read(self._object_counter))
@condition(action_output=['b64image'])
def report(self):
image = calvinsys.read(self._object_counter)
return (image, )
action_priority = (analyze, report)
requires = ['image.facefinding']
test_calvinsys = {
'image.facefinding': {
'read': ["dummy_data_read"],
'write': ["dummy_data_write"]
}
}
test_set = [{
'inports': {
'b64image': ["dummy_data_write"]
},
'outports': {
'b64image': ["dummy_data_read"]
}
}]
class StandardIn(Actor):
"""
Reads from Standard IN, and send each read line as a token on output port
Outputs:
out : Each token is a line of text, or EOSToken.
"""
@manage([])
def init(self):
self.setup()
def setup(self):
self.file = calvinsys.open(self, "io.stdin")
def did_migrate(self):
self.setup()
def will_end(self):
if self.file is not None:
calvinsys.close(self.file)
self.file = None
@stateguard(lambda self: self.file and calvinsys.can_read(self.file))
@condition([], ['out'])
def read(self):
line = calvinsys.read(self.file)
return (line, )
action_priority = (read, )
requires = ['io.stdin']
test_calvinsys = {
'io.stdin': {
'read': [
'the', 'quick', 'brown', 'fox', 'jumped', 'over', 'the',
'lazy', 'dog'
]
}
}
test_set = [{
'outports': {
'out': [
'the', 'quick', 'brown', 'fox', 'jumped', 'over', 'the',
'lazy', 'dog'
]
},
}]
class ClassicDelay(Actor):
"""
After first token, pass on token once every 'delay' seconds.
Input :
token: anything
Outputs:
token: anything
"""
@manage(['timer', 'delay', 'started'])
def init(self, delay):
self.delay = delay
self.timer = calvinsys.open(self, "sys.timer.repeating")
self.started = False
@stateguard(
lambda self: not self.started and calvinsys.can_write(self.timer))
@condition(['token'], ['token'])
def start_timer(self, token):
self.started = True
calvinsys.write(self.timer, self.delay)
return (token, )
@stateguard(lambda self: calvinsys.can_read(self.timer))
@condition(['token'], ['token'])
def passthrough(self, token):
calvinsys.read(self.timer)
return (token, )
action_priority = (start_timer, passthrough)
requires = ['sys.timer.repeating']
test_kwargs = {'delay': 20}
test_calvinsys = {
'sys.timer.repeating': {
'read': ["d", "u", "m", "m", "y"],
'write': [20]
}
}
test_set = [{
'inports': {
'token': ["a", "b", 1]
},
'outports': {
'token': ["a", "b", 1]
}
}]
