正在请求simpy python中的第一个可用资源
我想创建一个模拟模型,模拟一个有3个计数器的银行。我希望有一个客户队列,如果任何一个柜台可用,它将为柜台服务一段时间。每个柜台都有自己的simpy资源(我无法使用一个容量为3的资源),我需要知道哪个柜台为客户服务。我在实现这一点上遇到了困难 我发现这篇文章似乎是关于同样的问题,但仍然不知道确切的实现 我假设我需要一个yield simpy.AnyOf(env,list_of_resources)来请求第一个可用的计数器,但我不知道如何正确设置,而且如果同时有多个资源可用,我想用某种方法检查一下,以便我可以选择哪个计数器更适合客户 我正在运行python版本2.7,simpy版本3.0.4 编辑添加代码,显示我正在尝试做什么以及它现在如何不工作正在请求simpy python中的第一个可用资源,python,python-2.7,simulation,simpy,Python,Python 2.7,Simulation,Simpy,我想创建一个模拟模型,模拟一个有3个计数器的银行。我希望有一个客户队列,如果任何一个柜台可用,它将为柜台服务一段时间。每个柜台都有自己的simpy资源(我无法使用一个容量为3的资源),我需要知道哪个柜台为客户服务。我在实现这一点上遇到了困难 我发现这篇文章似乎是关于同样的问题,但仍然不知道确切的实现 我假设我需要一个yield simpy.AnyOf(env,list_of_resources)来请求第一个可用的计数器,但我不知道如何正确设置,而且如果同时有多个资源可用,我想用某种方法检查一下,
import simpy
import random
LENGTH_SIM = 200.0
class Customer(object):
def __init__(self, arrive_time, num):
self.arrive_time = arrive_time
self.start_service_time = -1.0
self.finish_service_time = -1.0
self.served_by = -1.0
self.num = num
def print_attributes(self):
format_string = "#%3d Arrive: %6.1f Start Service: %6.1f "\
+ " End Service: %6.1f" + " Served By: %3d"
print format_string %(self.num, self.arrive_time,
self.start_service_time,
self.finish_service_time, self.served_by)
class Counter(object):
def __init__(self, number):
self.number = number
self.name = "Counter " + str(number)
self.start_times = []
self.end_times = []
class Bank(object):
def __init__(self, env, num_counters):
self.counters = [Counter(x+1) for x in range(num_counters)]
self.num_counters = num_counters
self.counters_resources = [simpy.Resource(env, capacity=1)
for x in range(num_counters)]
def generate_customers(env, customers):
count = 1
while 1:
wait_time = random.randint(8, 12)
yield env.timeout(wait_time)
customers.append(Customer(env.now, count))
print "Generated Customer: ", count
count += 1
def select_counter(env, bank):
'''choose a counter for the customer'''
for x in range(len(bank.counters)):
if bank.counters_resources[len(bank.counters) - 1 - x].count == 0:
print "Counter Selected: ", len(bank.counters) - 1 - x
print bank.counters[len(bank.counters) - 1 - x].number
print bank.counters_resources[len(bank.counters) - 1 - x].users
return len(bank.counters) - 1 - x
return -2.0
def gen_service_time():
return random.random() * 20.0 + 21.0
def handle_customer(env, bank, customer, customers, num_process):
'''handles customer'''
print "Process ", num_process, " started at:", env.now
counter = select_counter(env, bank)
print "Process ", num_process, " after counter select:", env.now
if counter != -2.0:
with bank.counters_resources[counter].request() as req:
yield req
print "Process ", num_process, "Time", env.now, "In if"
bank.counters[counter].start_times.append(env.now)
service_time = gen_service_time()
customer.start_service_time = env.now
customer.finish_service_time = env.now + service_time
bank.counters[counter].end_times.append(env.now + service_time)
customer.served_by = counter + 1
yield env.timeout(service_time)
else:
reqs = []
for x in range(len(bank.counters)):
reqs.append(bank.counters_resources[x].request())
counter_used = yield simpy.events.AnyOf(env, reqs)
for x in range(len(reqs)):
if counter_used.keys()[0] != reqs[x]:
print "True"
bank.counters_resources[x].release(reqs[x])
print "Process ", num_process, "Time", env.now, "In else"
bank.counters[0].start_times.append(env.now)
service_time = gen_service_time()
customer.start_service_time = env.now
customer.finish_service_time = env.now + service_time
bank.counters[0].end_times.append(env.now + service_time)
customer.served_by = 1
yield env.timeout(service_time)
for x in range(len(reqs)):
## if counter_used.keys()[0] == reqs[x]:
if 1:
bank.counters_resources[x].release(reqs[x])
def run_bank(env, bank, customers):
while 1:
min_time = -1.0
min_customer = -1.0
for x in xrange(len(customers)):
if customers[x].arrive_time < min_time or min_time == -1.0:
if customers[x].arrive_time > env.now:
min_time = customers[x].arrive_time
min_customer = x
else:
continue
if min_time == -1.0:
yield env.timeout(LENGTH_SIM - env.now)
yield env.timeout(min_time - env.now)
print "Calling Process: ", min_customer, "At time:", env.now
env.process(handle_customer(env,bank,customers[min_customer],customers,
min_customer + 1))
def run_sim():
env = simpy.Environment()
customers = []
env.process(generate_customers(env, customers))
env.run(until=LENGTH_SIM)
env2 = simpy.Environment()
bank = Bank(env2, 3)
env2.process(run_bank(env2, bank, customers))
env2.run(until = LENGTH_SIM)
for x in range(len(customers)):
customers[x].print_attributes()
if __name__ == '__main__':
run_sim()
导入simpy
随机输入
长度=200.0
类别客户(对象):
定义初始值(self,到达时间,num):
self.arrival\u time=到达时间
self.start\u service\u time=-1.0
self.finish\u service\u time=-1.0
self.served_by=-1.0
self.num=num
def打印_属性(自身):
format_string=“#%3d到达:%6.1f启动服务:%6.1f”\
+“结束服务:%6.1f”+“由%3d提供服务”
打印格式\u字符串%(self.num、self.arrival\u时间、,
自启动\服务\时间,
自助完成服务时间,自助服务人)
类计数器(对象):
定义初始化(自身,编号):
self.number=number
self.name=“Counter”+str(编号)
self.start_times=[]
self.end_times=[]
类别库(对象):
定义初始化计数器(自身、环境、数量计数器):
self.counters=[范围内x的计数器(x+1)(num_计数器)]
self.num\u计数器=num\u计数器
self.counters\u resources=[simpy.Resource(环境,容量=1)
对于范围内的x(计数器数量)]
def生成_客户(环境、客户):
计数=1
而1:
wait_time=random.randint(8,12)
产量环境超时(等待时间)
customers.append(Customer(env.now,count))
打印“生成的客户:”,计数
计数+=1
def选择_计数器(环境、银行):
''为客户选择一个柜台''
对于范围内的x(长度(银行柜台)):
如果bank.counters\u资源[len(bank.counters)-1-x].count==0:
打印“所选计数器:”,len(银行计数器)-1-x
打印bank.counters[len(bank.counters)-1-x]。编号
打印bank.counters\u资源[len(bank.counters)-1-x]。用户
返回长度(银行柜台)-1-x
返回-2.0
def gen_服务时间():
返回random.random()*20.0+21.0
def处理客户(环境、银行、客户、客户、数量流程):
“处理客户”
打印“进程”,num_进程,开始于:,env.now
计数器=选择计数器(环境、银行)
在计数器选择:,env.now之后打印“进程”,num_进程
如果计数器!=-2.0:
使用bank.counters\u资源[counter].request()作为请求:
产量需求
打印“进程”,num_进程,“时间”,env.now,“如果”
bank.counters[counter].start\u times.append(env.now)
服务时间=发电服务时间()
customer.start\u service\u time=env.now
customer.finish\u service\u time=env.now+service\u time
bank.counters[counter].end\u times.append(env.now+service\u time)
customer.served_by=柜台+1
产量环境超时(服务时间)
其他:
需求=[]
对于范围内的x(长度(银行柜台)):
请求追加(银行计数器资源[x].request())
使用的计数器=产生简单事件任意(环境、需求)
对于范围内的x(透镜(要求)):
如果使用计数器_。键()[0]!=需求[x]:
打印“真”
bank.counters\u资源[x].发布(需求[x])
打印“进程”,num_进程,“时间”,env.now,“以其他方式”
bank.counters[0]。开始\u次。追加(env.now)
服务时间=发电服务时间()
customer.start\u service\u time=env.now
customer.finish\u service\u time=env.now+service\u time
bank.counters[0]。结束时间。追加(env.now+服务时间)
customer.served_by=1
产量环境超时(服务时间)
对于范围内的x(透镜(要求)):
##如果使用了计数器,则.keys()[0]==reqs[x]:
如果1:
bank.counters\u资源[x].发布(需求[x])
def运行银行(环境、银行、客户):
而1:
最小时间=-1.0
最小客户=-1.0
对于x范围内的x(len(客户)):
如果客户[x]。到达时间环境现在:
最小时间=客户[x]。到达时间
最小客户=x
其他:
持续
如果最小时间==-1.0:
屈服环境超时(长度\u SIM-env.now)
产生环境超时(最小时间-环境现在)
打印“呼叫流程:”,min_客户,“时间:”,env.now
环境流程(处理客户(环境、银行、客户[最小客户]、客户、,
最小(客户+1))
def run_sim():
env=simpy.Environment()
客户=[]
环境流程(生成_客户(环境,客户))
环境运行(直到=长度)
env2=simpy.Environment()
银行=银行(环境2,3)
环境2.流程(运行银行(环境2、银行、客户))
env2.运行(直到=长度\u SIM)
对于范围内的x(len(客户)):
客户[x]。打印属性()
如果uuuu name uuuuuu='\uuuuuuu main\uuuuuuu':
运行_sim()
如果你真的不能使用一个容量为3的普通资源,他可能会
import simpy
class Counter:
usages = 0
def customer(env, counters):
counter = yield counters.get()
yield env.timeout(1)
counter.usages += 1
yield counters.put(counter)
env = simpy.Environment()
counters = simpy.Store(env, capacity=3)
counters.items = [Counter() for i in range(counters.capacity)]
for i in range(10):
env.process(customer(env, counters))
env.run()
for counter in counters.items:
print(counter.usages)
import simpy
import random
LENGTH_SIM = 100.0
class Customer(object):
def __init__(self, arrive_time, num):
self.arrive_time = arrive_time
self.start_service_time = -1.0
self.finish_service_time = -1.0
self.served_by = -1.0
self.num = num
def print_attributes(self):
format_string = "#%3d Arrive: %6.1f Start Service: %6.1f "\
+ " End Service: %6.1f" + " Served By: %3d"
print format_string %(self.num, self.arrive_time,
self.start_service_time,
self.finish_service_time, self.served_by)
class Counter(object):
def __init__(self, number):
self.number = number
self.name = "Counter " + str(number)
self.start_times = []
self.end_times = []
class Bank(object):
def __init__(self, env, num_counters):
self.counters = [Counter(x+1) for x in range(num_counters)]
self.num_counters = num_counters
self.counters_resources = [simpy.Resource(env, capacity=1)
for x in range(num_counters)]
def generate_customers(env, customers):
count = 1
while 1:
## wait_time = random.randint(8, 12)
wait_time = 2
yield env.timeout(wait_time)
customers.append(Customer(env.now, count))
print "Generated Customer: ", count
count += 1
def select_counter(env, bank):
'''choose a counter for the customer'''
for x in range(len(bank.counters)):
if bank.counters_resources[len(bank.counters) - 1 - x].count == 0 and\
bank.counters_resources[len(bank.counters) - 1 - x].queue == []:
print "Counter Selected: ", len(bank.counters) - 1 - x
return len(bank.counters) - 1 - x
return -2.0
def gen_service_time():
## return random.random() * 20.0 + 19.0
return random.randint(4, 8)
def wait_til_available(env, bank, temp_list):
while 1:
yield env.timeout(0.0001)
for x in range(len(bank.counters)):
if bank.counters_resources[x].count == 0:
req = bank.counters_resources[x].request()
temp_list[0] = x
temp_list[1] = req
return
def handle_customer(env, bank, customer, customers, num_process):
'''handles customer'''
print "Process ", num_process, " started at:", env.now
counter = select_counter(env, bank)
if counter != -2.0:
with bank.counters_resources[counter].request() as req:
yield req
bank.counters[counter].start_times.append(env.now)
service_time = gen_service_time()
customer.start_service_time = env.now
customer.finish_service_time = env.now + service_time
bank.counters[counter].end_times.append(env.now + service_time)
customer.served_by = counter + 1
yield env.timeout(service_time)
else:
reqs = []
got_counter = 0
for x in range(len(bank.counters)):
reqs.append(bank.counters_resources[x].request())
good_req = yield simpy.events.AnyOf(env, reqs)
req = good_req.keys()[0]
for x in range(len(bank.counters)):
if req != reqs[x]:
bank.counters_resources[x].release(reqs[x])
reqs[x].cancel(None, None, None)
else:
got_counter = x
bank.counters[got_counter].start_times.append(env.now)
service_time = gen_service_time()
customer.start_service_time = env.now
customer.finish_service_time = env.now + service_time
bank.counters[got_counter].end_times.append(env.now + service_time)
customer.served_by = got_counter + 1
yield env.timeout(service_time)
print "Process ", num_process, " finished at:", env.now
bank.counters_resources[got_counter].release(req)
def run_bank(env, bank, customers):
while 1:
min_time = -1.0
min_customer = -1.0
for x in xrange(len(customers)):
if customers[x].arrive_time < min_time or min_time == -1.0:
if customers[x].arrive_time > env.now:
min_time = customers[x].arrive_time
min_customer = x
else:
continue
if min_time == -1.0:
yield env.timeout(LENGTH_SIM - env.now)
yield env.timeout(min_time - env.now)
print "Calling Process: ", min_customer+1, "At time:", env.now
env.process(handle_customer(env,bank,customers[min_customer],customers,
min_customer + 1))
def run_sim():
env = simpy.Environment()
customers = []
env.process(generate_customers(env, customers))
env.run(until=LENGTH_SIM)
env2 = simpy.Environment()
bank = Bank(env2, 3)
env2.process(run_bank(env2, bank, customers))
env2.run(until = LENGTH_SIM)
for x in range(len(customers)):
customers[x].print_attributes()
if __name__ == '__main__':
run_sim()