Fish factory¶

SimPype features used in this example: Random variables, Resource inline customization, Message next, Log custom message properties.

The scenario of the simulation is a food factory processing fish:

                        /-> |Dry|
                       /
|Fish| -> |Selector| -+---> |Can|
                       \
                        \-> |Grill|

There are three species of fish arriving at the factory: cod, tuna, and calamari. These species need first to be sperated and process accordingly. Cod will be dried, tuna will be cut in chunks and put in a can, calamari will be grilled.

import simpype
import random


# [Mandatory] Create a SimPype simulation object
sim = simpype.Simulation(id = 'fish')
# [Optional] Fix the seed used by the pseudo-random generator
sim.seed = 42
# [Optional] Configure the log directory. 
# [Default] Log are store by default in the 'current working directory/log'
sim.log.dir = 'log'
# [Optional] Disable the logging to file and print to console instead
#sim.log.file = False
#sim.log.print = True
# [Optional] Log custom message properties
sim.log.property('species')
# [Mandatory] Add at least one generator to the simulation
fish = sim.add_generator(id = 'fish')
# [Mandatory] Assign an arrival time
fish.random['arrival'] = {
	0: lambda: random.expovariate(1.0 / 0.1)
}
fish.message.property['species'] = {
	0: lambda: random.choice(['cod', 'tuna', 'calamari'])
}


# [Mandatory] Add at least one resource to the simulation
dry = sim.add_resource(id = 'dry')
dry.random['service'] = {
	0: lambda: 60
}

# Add an additional resource
can = sim.add_resource(id = 'can')
can.random['service'] = {
	0: lambda: random.expovariate(1.0 / 20)
}

# Add an additional resource
grill = sim.add_resource(id = 'grill')
grill.random['service'] = {
	0: lambda: random.expovariate(1.0 / 60)
}

# Add an additional resource
selector = sim.add_resource(id = 'selector')
@simpype.resource.service(selector)
def selector_service(self, message):
	if message.property['species'].value == 'cod':
		message.next = dry
	elif message.property['species'].value == 'tuna':
		message.next = can
	elif message.property['species'].value == 'calamari':
		message.next = grill


# [Mandatory] Add a pipeline connecting the generator and the resource
p0 = sim.add_pipeline(fish, selector)
p1 = sim.add_pipeline(selector, can)
p2 = sim.add_pipeline(selector, grill)
pM = sim.merge_pipeline(p0, p1, p2)

# [Mandatory] Run the simulation e.g. until t=2
sim.run(until = 2)

sim.cfg stored under the log folder contains:

Simulation Seed: 42
Simulation Time: 2.000000000
Execution Time: 0.014687043

sim.log stored under the log folder contains:

timestamp,message,seq_num,resource,event,species
133359267,fish,0,selector,pipe.in,calamari
133359267,fish,0,selector,pipe.out,calamari
133359267,fish,0,selector,resource.serve,calamari
133359267,fish,0,grill,pipe.in,calamari
133359267,fish,0,grill,pipe.out,calamari
268323787,fish,1,selector,pipe.in,calamari
268323787,fish,1,selector,pipe.out,calamari
268323787,fish,1,selector,resource.serve,calamari
268323787,fish,1,grill,pipe.in,calamari
323128403,fish,2,selector,pipe.in,cod
323128403,fish,2,selector,pipe.out,cod
323128403,fish,2,selector,resource.serve,cod
323128403,fish,2,dry,pipe.in,cod
323128403,fish,2,dry,pipe.out,cod
332966368,fish,3,selector,pipe.in,cod
332966368,fish,3,selector,pipe.out,cod
332966368,fish,3,selector,resource.serve,cod
332966368,fish,3,dry,pipe.in,cod
403357921,fish,4,selector,pipe.in,cod
403357921,fish,4,selector,pipe.out,cod
403357921,fish,4,selector,resource.serve,cod
403357921,fish,4,dry,pipe.in,cod
485739346,fish,5,selector,pipe.in,calamari
485739346,fish,5,selector,pipe.out,calamari
485739346,fish,5,selector,resource.serve,calamari
485739346,fish,5,grill,pipe.in,calamari
590688546,fish,6,selector,pipe.in,calamari
590688546,fish,6,selector,pipe.out,calamari
590688546,fish,6,selector,resource.serve,calamari
590688546,fish,6,grill,pipe.in,calamari
645078509,fish,7,selector,pipe.in,tuna
645078509,fish,7,selector,pipe.out,tuna
645078509,fish,7,selector,resource.serve,tuna
645078509,fish,7,can,pipe.in,tuna
645078509,fish,7,can,pipe.out,tuna
734059379,fish,8,selector,pipe.in,cod
734059379,fish,8,selector,pipe.out,cod
734059379,fish,8,selector,resource.serve,cod
734059379,fish,8,dry,pipe.in,cod
876275315,fish,9,selector,pipe.in,cod
876275315,fish,9,selector,pipe.out,cod
876275315,fish,9,selector,resource.serve,cod
876275315,fish,9,dry,pipe.in,cod
996054309,fish,10,selector,pipe.in,tuna
996054309,fish,10,selector,pipe.out,tuna
996054309,fish,10,selector,resource.serve,tuna
996054309,fish,10,can,pipe.in,tuna
028609505,fish,11,selector,pipe.in,cod
028609505,fish,11,selector,pipe.out,cod
028609505,fish,11,selector,resource.serve,cod
028609505,fish,11,dry,pipe.in,cod
343761770,fish,12,selector,pipe.in,tuna
343761770,fish,12,selector,pipe.out,tuna
343761770,fish,12,selector,resource.serve,tuna
343761770,fish,12,can,pipe.in,tuna
354543710,fish,13,selector,pipe.in,tuna
354543710,fish,13,selector,pipe.out,tuna
354543710,fish,13,selector,resource.serve,tuna
354543710,fish,13,can,pipe.in,tuna
364715578,fish,14,selector,pipe.in,tuna
364715578,fish,14,selector,pipe.out,tuna
364715578,fish,14,selector,resource.serve,tuna
364715578,fish,14,can,pipe.in,tuna
457280525,fish,15,selector,pipe.in,cod
457280525,fish,15,selector,pipe.out,cod
457280525,fish,15,selector,resource.serve,cod
457280525,fish,15,dry,pipe.in,cod
588114568,fish,16,selector,pipe.in,calamari
588114568,fish,16,selector,pipe.out,calamari
588114568,fish,16,selector,resource.serve,calamari
588114568,fish,16,grill,pipe.in,calamari
601447842,fish,17,selector,pipe.in,tuna
601447842,fish,17,selector,pipe.out,tuna
601447842,fish,17,selector,resource.serve,tuna
601447842,fish,17,can,pipe.in,tuna
609655675,fish,18,selector,pipe.in,tuna
609655675,fish,18,selector,pipe.out,tuna
609655675,fish,18,selector,resource.serve,tuna
609655675,fish,18,can,pipe.in,tuna
786501773,fish,19,selector,pipe.in,calamari
786501773,fish,19,selector,pipe.out,calamari
786501773,fish,19,selector,resource.serve,calamari
786501773,fish,19,grill,pipe.in,calamari