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commands.py
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commands.py
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#
# Copyright (C) 2007-2017 by frePPLe bv
#
# This library is free software; you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License as published
# by the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This library 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 Affero
# General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with this program. If not, see <http://www.gnu.org/licenses/>.
#
from datetime import datetime
import os
import logging
from django.db import DEFAULT_DB_ALIAS
from django.utils.translation import gettext_lazy as _
from freppledb.common.commands import PlanTaskRegistry, PlanTask
from freppledb.common.models import Parameter, Bucket
logger = logging.getLogger(__name__)
@PlanTaskRegistry.register
class CheckBuckets(PlanTask):
description = "Generation of time buckets"
sequence = 3
@classmethod
def getWeight(cls, database=DEFAULT_DB_ALIAS, **kwargs):
if Bucket.objects.all().using(database).exists():
return -1
else:
return 1
@classmethod
def run(cls, database=DEFAULT_DB_ALIAS, **kwargs):
from django.core import management
management.call_command("createbuckets", database=database, task=-1)
@PlanTaskRegistry.register
class MakePlanFeasible(PlanTask):
description = "Initial plan problems"
sequence = 199
@classmethod
def getWeight(cls, **kwargs):
if "supply" in os.environ:
return 1
else:
return -1
@classmethod
def run(cls, database=DEFAULT_DB_ALIAS, **kwargs):
import frepple
# Determine log level
loglevel = int(Parameter.getValue("plan.loglevel", database, 0))
# Propagate the operationplan status
logger.info("Propagating work-in-progress status information")
frepple.solver_propagateStatus(loglevel=loglevel).solve()
# Update the feasibility flag of all operationplans
for oper in frepple.operations():
for opplan in oper.operationplans:
opplan.updateFeasible()
# Report the result
print("Initial problems:")
probs = {}
for i in frepple.problems():
if i.name in probs:
probs[i.name] += 1
else:
probs[i.name] = 1
for i in sorted(probs.keys()):
print(" %s: %s" % (i, probs[i]))
@PlanTaskRegistry.register
class SupplyPlanning(PlanTask):
description = "Generate supply plan"
sequence = 200
label = ("supply", _("Generate supply plan"))
@classmethod
def getWeight(cls, **kwargs):
if "supply" in os.environ:
return 1
else:
return -1
# Auxiliary functions for debugging
# Rename to activate
@classmethod
def DISABLED_debugResource(cls, res, mode):
# if res.name != 'my favorite resource': return
print("=> Situation on resource %s" % res.name)
for j in res.loadplans:
print(
"=> %s %s %s %s %s %s %s"
% (
j.quantity,
j.onhand,
j.startdate,
j.enddate,
j.operation.name,
j.operationplan.quantity,
j.setup,
)
)
# Auxiliary functions for debugging
# Rename to activate
@classmethod
def DISABLED_debugDemand(cls, dem, mode):
if dem.name == "my favorite demand":
print("=> Starting to plan demand %s" % dem.name)
cls.solver.loglevel = 2
else:
cls.solver.loglevel = 0
# Auxiliary functions for debugging
# Rename to activate
@classmethod
def DISABLED_nextDemand(cls, cluster):
# Build the list of demands to plan when accessed for the first time
if not hasattr(cls, "demandlist"):
import frepple
cls.demandlist = {}
for d in frepple.demands():
if d.quantity > 0 and d.status in ("open", "quote"):
if d.cluster in cls.demandlist:
cls.demandlist[d.cluster].append(d)
else:
cls.demandlist[d.cluster] = [d]
for cl in cls.demandlist:
cls.demandlist[cl].sort(
key=lambda d: (d.priority, d.due, d.quantity, d.name)
)
for d in cls.demandlist[cl]:
print("sorted", cl, d.priority, d.due, d.quantity, d.name)
# Pop a demand from the list on every call
print("asked next demand for", cls.demandlist[cluster])
if cls.demandlist.get(cluster, None):
return cls.demandlist[cluster].pop(0)
else:
return None
# Auxiliary functions for debugging
# Rename to activate
@classmethod
def DISABLED_debugOperation(cls, oper, mode):
return
@classmethod
def run(cls, database=DEFAULT_DB_ALIAS, **kwargs):
import frepple
# Determine log level
loglevel = int(Parameter.getValue("plan.loglevel", database, 0))
# Create a solver where the plan type are defined by an environment variable
try:
plantype = int(os.environ["FREPPLE_PLANTYPE"])
except Exception:
plantype = 1 # Default is a constrained plan
try:
constraint = int(os.environ["FREPPLE_CONSTRAINT"])
except Exception:
constraint = 15 # Default is with all constraints enabled
cls.solver = frepple.solver_mrp(
constraints=constraint,
plantype=plantype,
loglevel=loglevel,
lazydelay=int(Parameter.getValue("lazydelay", database, "86400")),
allowsplits=(
Parameter.getValue("allowsplits", database, "true").lower() == "true"
),
minimumdelay=int(Parameter.getValue("plan.minimumdelay", database, "3600")),
rotateresources=(
Parameter.getValue("plan.rotateResources", database, "true").lower()
== "true"
),
plansafetystockfirst=(
Parameter.getValue(
"plan.planSafetyStockFirst", database, "false"
).lower()
!= "false"
),
iterationmax=int(Parameter.getValue("plan.iterationmax", database, "0")),
resourceiterationmax=int(
Parameter.getValue("plan.resourceiterationmax", database, "500")
),
administrativeleadtime=86400
* float(Parameter.getValue("plan.administrativeLeadtime", database, "0")),
autofence=86400
* float(Parameter.getValue("plan.autoFenceOperations", database, "0")),
)
if hasattr(cls, "debugResource"):
cls.solver.userexit_resource = cls.debugResource
if hasattr(cls, "debugDemand"):
cls.solver.userexit_demand = cls.debugDemand
if hasattr(cls, "debugOperation"):
cls.solver.userexit_operation = cls.debugOperation
if hasattr(cls, "nextDemand"):
cls.solver.userexit_nextdemand = cls.nextDemand
logger.info("Plan type: %s" % plantype)
logger.info("Constraints: %s" % constraint)
cls.solver.solve()
frepple.printsize()
@PlanTaskRegistry.register
class EraseModel(PlanTask):
description = "Erase model"
sequence = 700
@classmethod
def getWeight(cls, database=DEFAULT_DB_ALIAS, **kwargs):
# Task not active!
return -1
@classmethod
def run(cls, database=DEFAULT_DB_ALIAS, **kwargs):
import frepple
frepple.erase(True)
frepple.printsize()