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nexedi
dream
Commits
c469da69
Commit
c469da69
authored
Mar 26, 2015
by
Georgios Dagkakis
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OperatedMachine removed. It has been long merged to standard Machine
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# ===========================================================================
# Copyright 2013 University of Limerick
#
# This file is part of DREAM.
#
# DREAM is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# DREAM is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with DREAM. If not, see <http://www.gnu.org/licenses/>.
# ===========================================================================
'''
Created on 22 Nov 2012
@author: Ioannis
'''
'''
Models a machine that can also have failures
'''
# XXX
#from SimPy.Simulation import activate, passivate, waituntil, hold, request, release
from
Failure
import
Failure
# from CoreObject import CoreObject
from
Machine
import
Machine
from
OperatedPoolBroker
import
Broker
from
OperatorPool
import
OperatorPool
from
RandomNumberGenerator
import
RandomNumberGenerator
# ===========================================================================
# the Machine object
# ===========================================================================
class
OperatedMachine
(
Machine
):
# =======================================================================
# initialise the id the capacity, of the resource and the distribution
# =======================================================================
def
__init__
(
self
,
id
,
name
,
capacity
=
1
,
processingTime
=
None
,
failureDistribution
=
'No'
,
MTTF
=
0
,
MTTR
=
0
,
availability
=
0
,
repairman
=
'None'
,
\
operatorPool
=
'None'
,
operationType
=
'None'
,
setupTime
=
None
,
loadTime
=
None
):
Machine
.
__init__
(
self
,
id
,
name
,
capacity
=
capacity
,
processingTime
=
processingTime
,
failureDistribution
=
failureDistribution
,
MTTF
=
MTTF
,
MTTR
=
MTTR
,
availability
=
availability
,
repairman
=
repairman
,
operatorPool
=
operatorPool
,
operationType
=
operationType
,
setupTime
=
setupTime
,
loadTime
=
loadTime
,)
# type of the machine
self
.
type
=
"OperatedMachine"
# sets the operator resource of the Machine
# check if the operatorPool is a List or a OperatorPool type Object
# if it is a list then initiate a OperatorPool type object containing
# the list of operators provided
'''
change! if the list is empty create operator pool with empty list
'''
if
(
type
(
operatorPool
)
is
list
):
#and len(operatorPool)>0:
id
=
id
+
'_OP'
name
=
self
.
objName
+
'_operatorPool'
self
.
operatorPool
=
OperatorPool
(
id
,
name
,
operatorsList
=
operatorPool
)
else
:
self
.
operatorPool
=
operatorPool
# update the operatorPool coreObjects list
if
self
.
operatorPool
!=
'None'
:
self
.
operatorPool
.
coreObjectIds
.
append
(
self
.
id
)
self
.
operatorPool
.
coreObjects
.
append
(
self
)
# holds the Operator currently processing the Machine
self
.
currentOperator
=
None
# define if load/setup/removal/processing are performed by the operator
self
.
operationType
=
operationType
# boolean to check weather the machine is being operated
self
.
toBeOperated
=
False
# examine if there are multiple operation types performed by the operator
# there can be Setup/Processing operationType
# or the combination of both (MT-Load-Setup-Processing)
self
.
multOperationTypeList
=
[]
if
self
.
operationType
.
startswith
(
"MT"
):
OTlist
=
operationType
.
split
(
'-'
)
self
.
operationType
=
OTlist
.
pop
(
0
)
self
.
multOperationTypeList
=
OTlist
else
:
self
.
multOperationTypeList
.
append
(
self
.
operationType
)
# lists to hold statistics of multiple runs
self
.
WaitingForOperator
=
[]
self
.
WaitingForLoadOperator
=
[]
self
.
Loading
=
[]
self
.
SettingUp
=
[]
# =======================================================================
# initialize the machine
# =======================================================================
def
initialize
(
self
):
Machine
.
initialize
(
self
)
# initiate the Broker responsible to control the request/release
# initialize the operator pool if any
if
(
self
.
operatorPool
!=
"None"
):
self
.
operatorPool
.
initialize
()
self
.
broker
=
Broker
(
self
)
activate
(
self
.
broker
,
self
.
broker
.
run
())
for
operator
in
self
.
operatorPool
.
operators
:
operator
.
coreObjectIds
.
append
(
self
.
id
)
operator
.
coreObjects
.
append
(
self
)
# the time that the machine started/ended its wait for the operator
self
.
timeWaitForOperatorStarted
=
0
self
.
timeWaitForOperatorEnded
=
0
self
.
totalTimeWaitingForOperator
=
0
# the time that the machine started/ended its wait for the operator
self
.
timeWaitForLoadOperatorStarted
=
0
self
.
timeWaitForLoadOperatorEnded
=
0
self
.
totalTimeWaitingForLoadOperator
=
0
# the time that the operator started/ended loading the machine
self
.
timeLoadStarted
=
0
self
.
timeLoadEnded
=
0
self
.
totalLoadTime
=
0
# the time that the operator started/ended setting-up the machine
self
.
timeSetupStarted
=
0
self
.
timeSetupEnded
=
0
self
.
totalSetupTime
=
0
# Current entity load/setup/loadOperatorwait/operatorWait related times
self
.
operatorWaitTimeCurrentEntity
=
0
# holds the time that the machine was waiting for the operator
self
.
loadOperatorWaitTimeCurrentEntity
=
0
# holds the time that the machine waits for operator to load the it
self
.
loadTimeCurrentEntity
=
0
# holds the time to load the current entity
self
.
setupTimeCurrentEntity
=
0
# holds the time to setup the machine before processing the current entity
# =======================================================================
# the main process of the machine
# =======================================================================
def
run
(
self
):
# execute all through simulation time
while
1
:
# wait until the machine can accept an entity and one predecessor requests it
# canAcceptAndIsRequested is invoked to check when the machine requested to receive an entity
yield
waituntil
,
self
,
self
.
canAcceptAndIsRequested
# here or in the get entity (apart from the loatTimeCurrentEntity)
# in case they are placed inside the getEntity then the initialize of
# the corresponding variables should be moved to the initialize() of the CoreObject
self
.
operatorWaitTimeCurrentEntity
=
0
self
.
loadOperatorWaitTimeCurrentEntity
=
0
self
.
loadTimeCurrentEntity
=
0
self
.
setupTimeCurrentEntity
=
0
# ======= request a resource
if
(
self
.
operatorPool
!=
"None"
)
and
any
(
type
==
'Load'
for
type
in
self
.
multOperationTypeList
):
# when it's ready to accept (canAcceptAndIsRequested) then inform the broker
# machines waits to be operated (waits for the operator)
self
.
requestOperator
()
self
.
timeWaitForLoadOperatorStarted
=
self
.
env
.
now
# wait until the Broker has waited times equal to loadTime (if any)
yield
waituntil
,
self
,
self
.
broker
.
brokerIsSet
self
.
timeWaitForLoadOperatorEnded
=
self
.
env
.
now
self
.
loadOperatorWaitTimeCurrentEntity
+=
self
.
timeWaitForLoadOperatorEnded
-
self
.
timeWaitForLoadOperatorStarted
self
.
totalTimeWaitingForLoadOperator
+=
self
.
loadOperatorWaitTimeCurrentEntity
# ======= Load the machine if the Load is defined as one of the Operators' operation types
if
any
(
type
==
"Load"
for
type
in
self
.
multOperationTypeList
)
and
self
.
isOperated
():
self
.
timeLoadStarted
=
self
.
env
.
now
yield
hold
,
self
,
self
.
calculateLoadTime
()
# if self.interrupted(): There is the issue of failure during the Loading
self
.
timeLoadEnded
=
self
.
env
.
now
self
.
loadTimeCurrentEntity
=
self
.
timeLoadEnded
-
self
.
timeLoadStarted
self
.
totalLoadTime
+=
self
.
loadTimeCurrentEntity
# ======= release a resource if the only operation type is Load
if
(
self
.
operatorPool
!=
"None"
)
\
and
any
(
type
==
"Load"
for
type
in
self
.
multOperationTypeList
)
\
and
not
any
(
type
==
"Processing"
or
type
==
"Setup"
for
type
in
self
.
multOperationTypeList
)
\
and
self
.
isOperated
():
# after getting the entity release the operator
# machine has to release the operator
self
.
releaseOperator
()
# wait until the Broker has finished processing
yield
waituntil
,
self
,
self
.
broker
.
brokerIsSet
# get the entity
# if there was loading time then we must solve the problem of getting an entity
# from an unidentified giver or not getting an entity at all as the giver
# may fall in failure mode
self
.
currentEntity
=
self
.
getEntity
()
# set the currentEntity as the Entity just received and initialize the timer timeLastEntityEntered
self
.
nameLastEntityEntered
=
self
.
currentEntity
.
name
# this holds the name of the last entity that got into Machine
self
.
timeLastEntityEntered
=
self
.
env
.
now
#this holds the last time that an entity got into Machine
# variables dedicated to hold the processing times, the time when the Entity entered,
# and the processing time left
timeEntered
=
self
.
env
.
now
# timeEntered dummy Timer that holds the time the last Entity Entered
# ======= request a resource if it is not already assigned an Operator
if
(
self
.
operatorPool
!=
"None"
)
\
and
any
(
type
==
"Processing"
or
type
==
"Setup"
for
type
in
self
.
multOperationTypeList
)
\
and
not
self
.
isOperated
():
# when it's ready to accept (canAcceptAndIsRequested) then inform the broker
# machines waits to be operated (waits for the operator)
self
.
requestOperator
()
self
.
timeWaitForOperatorStarted
=
self
.
env
.
now
# wait until the Broker has waited times equal to loadTime (if any)
yield
waituntil
,
self
,
self
.
broker
.
brokerIsSet
self
.
timeWaitForOperatorEnded
=
self
.
env
.
now
self
.
operatorWaitTimeCurrentEntity
+=
self
.
timeWaitForOperatorEnded
-
self
.
timeWaitForOperatorStarted
self
.
totalProcessingTimeInCurrentEntity
=
self
.
calculateProcessingTime
()
# get the processing time, tinMStarts holds the processing time of the machine
tinM
=
self
.
totalProcessingTimeInCurrentEntity
# timer to hold the processing time left
# ======= setup the machine if the Setup is defined as one of the Operators' operation types
# in plantSim the setup is performed when the machine has to process a new type of Entity and only once
if
any
(
type
==
"Setup"
for
type
in
self
.
multOperationTypeList
)
and
self
.
isOperated
():
self
.
timeSetupStarted
=
self
.
env
.
now
yield
hold
,
self
,
self
.
calculateSetupTime
()
# if self.interrupted(): There is the issue of failure during the setup
self
.
timeSetupEnded
=
self
.
env
.
now
self
.
setupTimeCurrentEntity
=
self
.
timeSetupEnded
-
self
.
timeSetupStarted
self
.
totalSetupTime
+=
self
.
setupTimeCurrentEntity
# ======= release a resource if the only operation type is Setup
if
(
self
.
operatorPool
!=
"None"
)
\
and
self
.
isOperated
()
\
and
any
(
type
==
"Setup"
or
type
==
"Load"
for
type
in
self
.
multOperationTypeList
)
\
and
not
any
(
type
==
"Processing"
for
type
in
self
.
multOperationTypeList
):
# after getting the entity release the operator
# machine has to release the operator
self
.
releaseOperator
()
# print self.objName, 'operator released', self.env.now
# wait until the Broker has finished processing
yield
waituntil
,
self
,
self
.
broker
.
brokerIsSet
# variables used to flag any interruptions and the end of the processing
interruption
=
False
processingEndedFlag
=
True
# timers to follow up the failure time of the machine while on current Entity
failureTime
=
0
# dummy variable keeping track of the failure time
# might be feasible to avoid it
self
.
downTimeInCurrentEntity
=
0
#holds the total time that the
#object was down while holding current entity
# this loop is repeated until the processing time is expired with no failure
# check when the processingEndedFlag switched to false
while
processingEndedFlag
:
# tBefore : dummy variable to keep track of the time that the processing starts after
# every interruption
tBefore
=
self
.
env
.
now
# wait for the processing time left tinM, if no interruption occurs then change the
# processingEndedFlag and exit loop,
# else (if interrupted()) set interruption flag to true (only if tinM==0),
# and recalculate the processing time left tinM,
# passivate while waiting for repair.
yield
hold
,
self
,
tinM
# getting processed for remaining processing time tinM
if
self
.
interrupted
():
# if a failure occurs while processing the machine is interrupted.
# output to trace that the Machine (self.objName) got interrupted
self
.
outputTrace
(
self
.
getActiveObjectQueue
()[
0
].
name
,
"Interrupted at "
+
self
.
objName
)
# recalculate the processing time left tinM
tinM
=
tinM
-
(
self
.
env
.
now
-
tBefore
)
if
(
tinM
==
0
):
# sometimes the failure may happen exactly at the time that the processing would finish
# this may produce disagreement with the simul8 because in both SimPy and Simul8
# it seems to be random which happens 1st
# this should not appear often to stochastic models though where times are random
interruption
=
True
# passivate the Machine for as long as there is no repair
# start counting the down time at breatTime dummy variable
breakTime
=
self
.
env
.
now
# dummy variable that the interruption happened
# =============== release the operator if there is failure
if
(
self
.
operatorPool
!=
"None"
)
\
and
self
.
isOperated
()
\
and
any
(
type
==
"Processing"
for
type
in
self
.
multOperationTypeList
):
self
.
releaseOperator
()
# print self.objName, 'operator released due to failure', self.env.now
yield
waituntil
,
self
,
self
.
broker
.
brokerIsSet
# if there is a failure in the machine it is passivated
yield
passivate
,
self
# use the timers to count the time that Machine is down and related
self
.
downTimeProcessingCurrentEntity
+=
self
.
env
.
now
-
breakTime
# count the time that Machine is down while processing this Entity
self
.
downTimeInCurrentEntity
+=
self
.
env
.
now
-
breakTime
# count the time that Machine is down while on currentEntity
self
.
timeLastFailureEnded
=
self
.
env
.
now
# set the timeLastFailureEnded
failureTime
+=
self
.
env
.
now
-
breakTime
# dummy variable keeping track of the failure time
# output to trace that the Machine self.objName was passivated for the current failure time
self
.
outputTrace
(
self
.
getActiveObjectQueue
()[
0
].
name
,
"passivated in "
+
self
.
objName
+
" for "
+
str
(
self
.
env
.
now
-
breakTime
))
# =============== request a resource after the repair
if
(
self
.
operatorPool
!=
"None"
)
\
and
any
(
type
==
"Processing"
for
type
in
self
.
multOperationTypeList
)
\
and
not
interruption
:
self
.
timeWaitForOperatorStarted
=
self
.
env
.
now
self
.
requestOperator
()
yield
waituntil
,
self
,
self
.
broker
.
brokerIsSet
self
.
timeWaitForOperatorEnded
=
self
.
env
.
now
self
.
operatorWaitTimeCurrentEntity
+=
self
.
timeWaitForOperatorEnded
-
self
.
timeWaitForOperatorStarted
# if no interruption occurred the processing in M1 is ended
else
:
processingEndedFlag
=
False
# output to trace that the processing in the Machine self.objName ended
self
.
outputTrace
(
self
.
getActiveObjectQueue
()[
0
].
name
,
"ended processing in "
+
self
.
objName
)
# =============== release resource after the end of processing
if
(
self
.
operatorPool
!=
'None'
)
\
and
any
(
type
==
"Processing"
for
type
in
self
.
multOperationTypeList
)
\
and
not
interruption
:
self
.
releaseOperator
()
yield
waituntil
,
self
,
self
.
broker
.
brokerIsSet
# set the variable that flags an Entity is ready to be disposed
self
.
waitToDispose
=
True
# update the total working time
self
.
totalWorkingTime
+=
self
.
totalProcessingTimeInCurrentEntity
# the total processing time for this entity
# is what the distribution initially gave
# update the variables keeping track of Entity related attributes of the machine
self
.
timeLastEntityEnded
=
self
.
env
.
now
# this holds the time that the last entity ended processing in Machine
self
.
nameLastEntityEnded
=
self
.
currentEntity
.
name
# this holds the name of the last entity that ended processing in Machine
self
.
completedJobs
+=
1
# Machine completed one more Job
# re-initialize the downTimeProcessingCurrentEntity.
# a new machine is about to enter
self
.
downTimeProcessingCurrentEntity
=
0
# dummy variable requests the successor object now
reqTime
=
self
.
env
.
now
# entity has ended processing in Machine and requests for the next object
# initialize the timer downTimeInTryingToReleaseCurrentEntity, we have to count how much time
# the Entity will wait for the next successor to be able to accept (canAccept)
self
.
downTimeInTryingToReleaseCurrentEntity
=
0
while
1
:
# wait until the next Object is available or machine has failure
yield
waituntil
,
self
,
self
.
ifCanDisposeOrHaveFailure
# if Next object available break
if
self
.
Up
:
break
# if M1 had failure, we want to wait until it is fixed and also count the failure time.
else
:
failTime
=
self
.
env
.
now
# dummy variable holding the time failure happened
# passivate until machine is up
yield
waituntil
,
self
,
self
.
checkIfMachineIsUp
failureTime
+=
self
.
env
.
now
-
failTime
# count the failure while on current entity time with failureTime variable
# calculate the time the Machine was down while trying to dispose the current Entity,
# and the total down time while on current Entity
self
.
downTimeInTryingToReleaseCurrentEntity
+=
self
.
env
.
now
-
failTime
self
.
downTimeInCurrentEntity
+=
self
.
env
.
now
-
failTime
# already updated from failures during processing
# update the timeLastFailureEnded
self
.
timeLastFailureEnded
=
self
.
env
.
now
# dummy variable holding the total time the Entity spent in the Machine
# count the time the Machine was blocked subtracting the failureTime
# and the processing time from the totalTime spent in the Machine
self
.
totalTimeInCurrentEntity
=
self
.
env
.
now
-
timeEntered
# =======================================================================
# checks if the Machine can accept an entity
# it checks also who called it and returns TRUE only to the predecessor
# that will give the entity.
# =======================================================================
def
canAccept
(
self
,
callerObject
=
None
):
# get active and giver objects
activeObject
=
self
.
getActiveObject
()
activeObjectQueue
=
self
.
getActiveObjectQueue
()
giverObject
=
self
.
getGiverObject
()
# if we have only one predecessor just check if there is a place and the machine is up
# this is done to achieve better (cpu) processing time
# then we can also use it as a filter for a yield method
if
(
len
(
activeObject
.
previous
)
==
1
or
callerObject
==
None
):
if
(
activeObject
.
operatorPool
!=
'None'
and
any
(
type
==
'Load'
for
type
in
activeObject
.
multOperationTypeList
)):
return
activeObject
.
operatorPool
.
checkIfResourceIsAvailable
()
\
and
activeObject
.
Up
\
and
len
(
activeObjectQueue
)
<
activeObject
.
capacity
else
:
return
activeObject
.
Up
and
len
(
activeObjectQueue
)
<
activeObject
.
capacity
\
thecaller
=
callerObject
# return True ONLY if the length of the activeOjbectQue is smaller than
# the object capacity, and the callerObject is not None but the giverObject
if
(
activeObject
.
operatorPool
!=
'None'
and
any
(
type
==
'Load'
for
type
in
activeObject
.
multOperationTypeList
)):
return
activeObject
.
operatorPool
.
checkIfResourceIsAvailable
()
\
and
activeObject
.
Up
\
and
len
(
activeObjectQueue
)
<
activeObject
.
capacity
else
:
# the operator doesn't have to be present for the loading of the machine as the load operation
# is not assigned to operators
return
activeObject
.
Up
and
len
(
activeObjectQueue
)
<
activeObject
.
capacity
# while if the set up is performed before the (automatic) loading of the machine then the availability of the
# operator is requested
# return (activeObject.operatorPool=='None' or activeObject.operatorPool.checkIfResourceIsAvailable())\
# and activeObject.Up and len(activeObjectQueue)<activeObject.capacity
# =======================================================================
# checks if the Machine can accept an entity and there is an entity in
# some possible giver waiting for it
# also updates the giver to the one that is to be taken
# =======================================================================
def
canAcceptAndIsRequested
(
self
):
# get active and giver objects
activeObject
=
self
.
getActiveObject
()
activeObjectQueue
=
self
.
getActiveObjectQueue
()
giverObject
=
self
.
getGiverObject
()
# if we have only one predecessor just check if there is a place,
# the machine is up and the predecessor has an entity to dispose
# if the machine has to compete for an Operator that loads the entities onto it
# check if the predecessor if blocked by an other Machine
# if not then the machine has to block the predecessor giverObject to avoid conflicts
# with other competing machines
if
(
len
(
activeObject
.
previous
)
==
1
):
if
(
activeObject
.
operatorPool
!=
'None'
and
any
(
type
==
'Load'
for
type
in
activeObject
.
multOperationTypeList
)):
if
activeObject
.
operatorPool
.
checkIfResourceIsAvailable
()
\
and
activeObject
.
Up
and
len
(
activeObjectQueue
)
<
activeObject
.
capacity
\
and
giverObject
.
haveToDispose
(
activeObject
)
and
not
giverObject
.
exitIsAssigned
():
activeObject
.
giver
.
assignExit
()
return
True
else
:
return
False
else
:
# the operator performs no load and the entity is received by the machine while there is
# no need for operators presence. The operator needs to be present only where the load Type
# operation is assigned
return
activeObject
.
Up
and
len
(
activeObjectQueue
)
<
activeObject
.
capacity
\
and
giverObject
.
haveToDispose
(
activeObject
)
# if the set-up performance needs be first performed before the transfer of the entity to
# the machine then the presence of an operator to setup the machine before the getEntity()
# is requested
# return (activeObject.operatorPool=='None'\
# or activeObject.operatorPool.checkIfResourceIsAvailable())\
# and activeObject.Up and len(activeObjectQueue)<activeObject.capacity\
# and giverObject.haveToDispose()
# dummy variables that help prioritise the objects requesting to give objects to the Machine (activeObject)
isRequested
=
False
# is requested is dummyVariable checking if it is requested to accept an item
maxTimeWaiting
=
0
# dummy variable counting the time a predecessor is blocked
# loop through the possible givers to see which have to dispose and which is the one blocked for longer
for
object
in
activeObject
.
previous
:
if
(
object
.
haveToDispose
(
activeObject
)):
# and not object.exitIsAssigned()):
isRequested
=
True
# if the possible giver has entities to dispose of
if
(
object
.
downTimeInTryingToReleaseCurrentEntity
>
0
):
# and the possible giver has been down while trying to give away the Entity
timeWaiting
=
self
.
env
.
now
-
object
.
timeLastFailureEnded
# the timeWaiting dummy variable counts the time end of the last failure of the giver object
else
:
timeWaiting
=
self
.
env
.
now
-
object
.
timeLastEntityEnded
# in any other case, it holds the time since the end of the Entity processing
#if more than one possible givers have to dispose take the part from the one that is blocked longer
if
(
timeWaiting
>=
maxTimeWaiting
):
activeObject
.
giver
=
object
# set the giver
maxTimeWaiting
=
timeWaiting
if
(
activeObject
.
operatorPool
!=
'None'
and
any
(
type
==
'Load'
for
type
in
activeObject
.
multOperationTypeList
)):
if
activeObject
.
operatorPool
.
checkIfResourceIsAvailable
()
\
and
activeObject
.
Up
and
len
(
activeObjectQueue
)
<
activeObject
.
capacity
\
and
isRequested
and
not
activeObject
.
giver
.
exitIsAssigned
():
activeObject
.
giver
.
assignExit
()
return
True
else
:
return
False
else
:
# the operator doesn't have to be present for the loading of the machine as the load operation
# is not assigned to operators
return
activeObject
.
Up
and
len
(
activeObjectQueue
)
<
activeObject
.
capacity
and
isRequested
# while if the set up is performed before the (automatic) loading of the machine then the availability of the
# operator is requested
# return (activeObject.operatorPool=='None' or activeObject.operatorPool.checkIfResourceIsAvailable())\
# and activeObject.Up and len(activeObjectQueue)<activeObject.capacity and isRequested
# =======================================================================
# calculates the setup time
# =======================================================================
def
calculateSetupTime
(
self
):
return
self
.
stpRng
.
generateNumber
()
# =======================================================================
# calculates the Load time
# =======================================================================
def
calculateLoadTime
(
self
):
return
self
.
loadRng
.
generateNumber
()
# =======================================================================
# prepare the machine to be operated
# =======================================================================
def
requestOperator
(
self
):
self
.
broker
.
invokeBroker
()
self
.
toBeOperated
=
True
# =======================================================================
# prepare the machine to be released
# =======================================================================
def
releaseOperator
(
self
):
self
.
broker
.
invokeBroker
()
self
.
toBeOperated
=
False
# =======================================================================
# check if the machine is currently operated by an operator
# =======================================================================
def
isOperated
(
self
):
return
self
.
toBeOperated
# =======================================================================
# check if the machine is already set-up
# =======================================================================
def
isSetUp
(
self
):
return
self
.
setUp
# =======================================================================
# request that the machine is set-up by an operator
# =======================================================================
def
requestSetup
(
self
):
self
.
setUp
=
False
# =======================================================================
# actions to be taken after the simulation ends
# =======================================================================
def
postProcessing
(
self
,
MaxSimtime
=
None
):
if
MaxSimtime
==
None
:
from
Globals
import
G
MaxSimtime
=
G
.
maxSimTime
activeObject
=
self
.
getActiveObject
()
activeObjectQueue
=
self
.
getActiveObjectQueue
()
alreadyAdded
=
False
# a flag that shows if the blockage time has already been added
# checks all the successors. If no one can accept an Entity then the machine might be blocked
mightBeBlocked
=
True
for
nextObject
in
self
.
next
:
if
nextObject
.
canAccept
():
mightBeBlocked
=
False
# if there is an entity that finished processing in a Machine but did not get to reach
# the following Object till the end of simulation,
# we have to add this blockage to the percentage of blockage in Machine
# we should exclude the failure time in current entity though!
# if (len(self.Res.activeQ)>0) and (len(self.next[0].Res.activeQ)>0) and ((self.nameLastEntityEntered == self.nameLastEntityEnded)):
if
(
len
(
activeObjectQueue
)
>
0
)
and
(
mightBeBlocked
)
\
and
((
activeObject
.
nameLastEntityEntered
==
activeObject
.
nameLastEntityEnded
)):
# be careful here, might have to reconsider
activeObject
.
totalBlockageTime
+=
self
.
env
.
now
-
(
activeObject
.
timeLastEntityEnded
+
activeObject
.
downTimeInTryingToReleaseCurrentEntity
)
if
activeObject
.
Up
==
False
:
activeObject
.
totalBlockageTime
-=
self
.
env
.
now
-
activeObject
.
timeLastFailure
alreadyAdded
=
True
#if Machine is currently processing an entity we should count this working time
if
(
len
(
activeObject
.
getActiveObjectQueue
())
>
0
)
\
and
(
not
(
activeObject
.
nameLastEntityEnded
==
activeObject
.
nameLastEntityEntered
))
\
and
(
not
(
activeObject
.
operationType
==
'Processing'
and
(
activeObject
.
currentOperator
==
None
))):
#if Machine is down we should add this last failure time to the time that it has been down in current entity
if
self
.
Up
==
False
:
# if(len(activeObjectQueue)>0) and (self.Up==False):
activeObject
.
downTimeProcessingCurrentEntity
+=
self
.
env
.
now
-
activeObject
.
timeLastFailure
activeObject
.
totalWorkingTime
+=
self
.
env
.
now
-
activeObject
.
timeLastEntityEntered
\
-
activeObject
.
downTimeProcessingCurrentEntity
\
-
activeObject
.
operatorWaitTimeCurrentEntity
\
-
activeObject
.
setupTimeCurrentEntity
activeObject
.
totalTimeWaitingForOperator
+=
activeObject
.
operatorWaitTimeCurrentEntity
elif
(
len
(
activeObject
.
getActiveObjectQueue
())
>
0
)
\
and
(
not
(
activeObject
.
nameLastEntityEnded
==
activeObject
.
nameLastEntityEntered
))
\
and
(
activeObject
.
currentOperator
==
None
):
# needs further research as the time of failure while waiting for operator is not counted yet
if
self
.
Up
==
False
:
activeObject
.
downTimeProcessingCurrentEntity
+=
self
.
env
.
now
-
activeObject
.
timeLastFailure
activeObject
.
totalTimeWaitingForOperator
+=
self
.
env
.
now
-
activeObject
.
timeWaitForOperatorStarted
\
-
activeObject
.
downTimeProcessingCurrentEntity
# if Machine is down we have to add this failure time to its total failure time
# we also need to add the last blocking time to total blockage time
if
(
activeObject
.
Up
==
False
):
activeObject
.
totalFailureTime
+=
self
.
env
.
now
-
activeObject
.
timeLastFailure
# we add the value only if it hasn't already been added
#if((len(self.next[0].Res.activeQ)>0) and (self.nameLastEntityEnded==self.nameLastEntityEntered) and (not alreadyAdded)):
if
((
mightBeBlocked
)
and
(
activeObject
.
nameLastEntityEnded
==
activeObject
.
nameLastEntityEntered
)
and
(
not
alreadyAdded
)):
activeObject
.
totalBlockageTime
+=
(
self
.
env
.
now
-
activeObject
.
timeLastEntityEnded
)
-
(
self
.
env
.
now
-
activeObject
.
timeLastFailure
)
-
activeObject
.
downTimeInTryingToReleaseCurrentEntity
#Machine was idle when it was not in any other state
activeObject
.
totalWaitingTime
=
MaxSimtime
-
activeObject
.
totalWorkingTime
-
activeObject
.
totalBlockageTime
-
activeObject
.
totalFailureTime
if
activeObject
.
totalBlockageTime
<
0
and
activeObject
.
totalBlockageTime
>-
0.00001
:
#to avoid some effects of getting negative cause of rounding precision
self
.
totalBlockageTime
=
0
if
activeObject
.
totalWaitingTime
<
0
and
activeObject
.
totalWaitingTime
>-
0.00001
:
#to avoid some effects of getting negative cause of rounding precision
self
.
totalWaitingTime
=
0
activeObject
.
Failure
.
append
(
100
*
self
.
totalFailureTime
/
MaxSimtime
)
activeObject
.
Blockage
.
append
(
100
*
self
.
totalBlockageTime
/
MaxSimtime
)
activeObject
.
Waiting
.
append
(
100
*
self
.
totalWaitingTime
/
MaxSimtime
)
activeObject
.
Working
.
append
(
100
*
self
.
totalWorkingTime
/
MaxSimtime
)
activeObject
.
WaitingForOperator
.
append
(
100
*
self
.
totalTimeWaitingForOperator
/
MaxSimtime
)
activeObject
.
WaitingForLoadOperator
.
append
(
100
*
self
.
totalTimeWaitingForLoadOperator
/
MaxSimtime
)
activeObject
.
Loading
.
append
(
100
*
self
.
totalLoadTime
/
MaxSimtime
)
activeObject
.
SettingUp
.
append
(
100
*
self
.
totalSetupTime
/
MaxSimtime
)
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