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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# Loan approval service implementation
import uuid
import sys
from util import *
from loan import *
loansId = ("loans", "1234")
# Return the list of loans
def loans(cache):
l = cache("get", loansId)
if l is None:
return ()
return l
# Post a new loan request
def post(collection, item, cache):
id = str(uuid.uuid1())
loans = cons(cons(id, cdr(item)), loans(cache))
cache("put", loansId, loans)
return (id,)
# Return the person currently processing a loan request
def processor(l):
if approver(l) is not None:
return approver(l)
return assessor(l)
# Return a list of loans that match a given criteria
def get(r, cache):
# All the loans
if r == ():
return loans(cache)
# Loans that need approval
if car(r) == "needApproval":
return filter(lambda l: (amount(l) >= 10000 or risk(l) == "high") and approval(l) is None, loans(cache))
# Loans that need a risk assessment
if car(r) == "needAssessment":
return filter(lambda : amount(l) < 10000 and risk(l) is None, loans(cache))
# Loans currently under approval
if car(r) == "underApproval":
return filter(lambda l: approver(l) is not None, loans(cache))
# Loans currently under assessment
if car(r) == "underAssessment":
return filter(lambda l: assessor(l) is not None, loans(cache))
# Loan requests that are unassigned
if car(r) == "unassigned":
return filter(lambda l: processor(l) is None, loans(cache))
# Loan requests that are assigned and getting processed
if car(r) == "assigned":
return filter(lambda l: processor(l) == cadr(r), loans(cache))
# Approved loans
if car(r) == "approved":
return filter(lambda l: approval(l) == true, loans(cache))
# Denied loans
if car(r) == "denied":
return filter(lambda l: approval(l) == false, loans(cache))
# A particular loan
return filter(lambda l: id(l) == r, loans(cache))
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