day05.2-一个文件的增删改查实例

一. 测试程序

 #INFO.txt源文件内容

 global

         log 127.0.1 local2

         daemon

         maxconn 256

         log 127.0.0.1 local2 info

 default

         log global

         mode http

         timeout connect 5000ms

         timeout client 50000ms

         timeout server 50000ms

         option dontlognull

 listen stats: 8888

         stats enable

         stats uri        /admin

         stats auth       admin:1234

 frontend oldboy.org

         bind 0.0.0.0:80

         option httplog

         option httpclose

         option forwardfor

         log global

         acl www hdr_reg(host) -i www.oldboy.org

         use_backend www.oldboy.org if www

 backend www.oldboy1.org

         server 100.1000.7.9 100.1000.7.9 weight 20 maxconn 30

         server 10.10.0.10 10.10.0.10 weight 9999 maxconn 33333333333

         server 10.10.10.1 10.10.10.1 weight 22 maxconn 2000

         server 2.2.2.4 2.2.2.4 weight 20 maxconn 3000

 backend www.oldboy2.org

         server 3.3.3.3 3.3.3.3 weight 20 maxconn 3000

 backend www.oldboy20.org

         server 10.10.0.10 10.10.0.10 weight 9999 maxconn 33333333333

 #bin.py

 """

 功能：查询文件中是否存在输入标签对应的信息，并打印查询结果

 输入：标签信息{"backend":"","inform":{"server":"","weight":"","maxconn":""}}

 返回：True----文件中存在标签对应的信息       False----文件中不存在标签对应的信息

 """

 def fetch(record):

     record = eval(record)

     tag1 = False

     tag2 = False

     sub_record = "server "+str(record["inform"]["server"])+" "+str(record["inform"]["server"])+" weight "+str(record["inform"]["weight"])+" maxconn "+str(record["inform"]["maxconn"])

     with open("INFO.txt","r") as file:

         for item in file:

             if item.strip()=="backend "+record["backend"]:

                 tag1 = True

             if tag1 and item.strip()==sub_record:

                 tag2 = True

                 break

         file.close()

     if tag1 and tag2:

         return True

     else:

         return False

 """

 功能：添加标签信息，

       如果要添加信息的backend存在，则在backend对应的子标签末尾添加inform对应信息

       如果要添加信息的backend不存在，则在文件末尾添加backend以及inform对应信息

 输入：要添加的标签信息{"backend":"","inform":{"server":"","weight":"","maxconn":""}}

 """

 def add(record):

     record = eval(record)

     sub_record = "server "+str(record["inform"]["server"])+" "+str(record["inform"]["server"])+" weight "+str(record["inform"]["weight"])+" maxconn "+str(record["inform"]["maxconn"])

     tag1 = False

     tag2 = False

     with open("INFO.txt","r") as file,\

         open("INFO_new.txt","w") as file_new:

         for item in file:

             if not tag1:

                 file_new.write(item)

             if item.strip()=="backend "+record["backend"]:

                 tag1 = True

                 continue

             if tag1 and item.startswith(" "):

                 file_new.write(item)

             if tag1 and not item.startswith(" "):

                 file_new.write(" "*8+sub_record+"\n")

                 file_new.write(item)

                 tag2 = True

                 tag1 = False

         if not tag2:

             file_new.write("\nbackend "+record["backend"])

             file_new.write("\n"+" "*8+sub_record+"\n")

         file.close()

         file_new.close()

 """

 功能：删除标签信息，

       如果要删除的标签信息存在，则删除对于标签，原文件中该标签之后的信息逐行上移一行

       如果要删除的标签信息不存在，则显示提示信息

 输入：要删除的标签信息{"backend":"","inform":{"server":"","weight":"","maxconn":""}}

 """

 def delete(record):

     res = fetch(record)

     if not res:

         print("要删除的标签信息不存在")

         return

     else:

         tag1 = False

         record = eval(record)

         sub_record = "server "+str(record["inform"]["server"])+" "+str(record["inform"]["server"])+" weight "+str(record["inform"]["weight"])+" maxconn "+str(record["inform"]["maxconn"])

         with open("INFO.txt","r") as file,\

             open("INFO_new.txt","w") as file_new:

             for item in file:

                 if not tag1:

                     file_new.write(item)

                 if item.strip() == "backend " + record["backend"]:

                     tag1 = True

                 if tag1 and item.strip()!=sub_record:

                     file_new.write(item)

                 if tag1 and item.strip()==sub_record:

                     tag1 = False

                     continue

             file.close()

             file_new.close()

 """

 功能：修改标签信息，

       如果要修改的标签信息存在，则将原文件中该标签信息修改

       如果要修改的标签信息不存在，则显示提示信息

 输入：要修改的标签信息{"backend":"","inform":{"server":"","weight":"","maxconn":""}}

       修改后标签信息{"backend":"","inform":{"server":"","weight":"","maxconn":""}}

 """

 def modify(recorded,record):

     res = fetch(recorded)

     if not res:

         print("要修改的标签信息不存在")

         return

     else:

         recorded = eval(recorded)

         sub_recorded = "server "+str(recorded["inform"]["server"])+" "+str(recorded["inform"]["server"])+" weight "+str(recorded["inform"]["weight"])+" maxconn "+str(recorded["inform"]["maxconn"])

         record = eval(record)

         sub_record = "server "+str(record["inform"]["server"])+" "+str(record["inform"]["server"])+" weight "+str(record["inform"]["weight"])+" maxconn "+str(record["inform"]["maxconn"])

         if recorded["backend"]!=record["backend"]:

             print("输入有误")

             return

         else:

             tag1 = False

             tag2 = False

             with open("INFO.txt", "r") as file, \

                 open("INFO_new.txt", "w") as file_new:

                 for item in file:

                     if item.strip()=="backend "+recorded["backend"]:

                         tag1 = True

                     elif tag1 and item.strip()==sub_recorded:

                         tag2 = True

                     if tag2:

                         file_new.write(" "*8+sub_record+"\n")

                         tag1 = False

                         tag2 = False

                         continue

                     elif not tag2:

                         file_new.write(item)

                 file.close()

                 file_new.close()

 Menu_msg = {"":fetch,"":add,"":delete,"":modify}           #功能函数字典

 menu_msg = ["1:  fetch","2:  add","3:  delete","4:  modify","5:  exit"]

 while(True):

     print("*"*20)

     for item in menu_msg:

         print("   " + item)

     print("*"*20)

     opration = input("请输入您的操作：").strip()

     if opration=="":

         record = input("请输入查询信息").strip()

         res=Menu_msg[opration](record)

         print(res)

     elif opration=="":

         record = input("请输入要添加的信息").strip()

         Menu_msg[opration](record)

     elif opration=="":

         record = input("请输入要删除的信息").strip()

         Menu_msg[opration](record)

     elif opration=="":

         recorded = input("请输入要修改的信息").strip()

         record = input("请输入修改后信息").strip()

         Menu_msg[opration](recorded,record)

     elif opration=="":

         break

     elif opration not in Menu_msg.keys():

         continue

二. 功能测试

查询

#程序运行过程

********************

   1:  fetch

   2:  add

   3:  delete

   4:  modify

   5:  exit

********************

请输入您的操作：>? 1

请输入查询信息>? {"backend":"www.oldboy1.org","inform":{"server":"100.1000.7.9","weight":20,"maxconn":30}}

True

添加

1. 添加子标签

#程序运行过程

********************

   1:  fetch

   2:  add

   3:  delete

   4:  modify

   5:  exit

********************

请输入您的操作：>? 2

请输入要添加的信息>? {"backend":"www.oldboy1.org","inform":{"server":"100.1000.7.9","weight":11,"maxconn":30}}

#INFO_new.txt修改后文件内容

global

        log 127.0.1 local2

        daemon

        maxconn 256

        log 127.0.0.1 local2 info

default

        log global

        mode http

        timeout connect 5000ms

        timeout client 50000ms

        timeout server 50000ms

        option dontlognull

listen stats: 8888

        stats enable

        stats uri        /admin

        stats auth       admin:1234

frontend oldboy.org

        bind 0.0.0.0:80

        option httplog

        option httpclose

        option forwardfor

        log global

        acl www hdr_reg(host) -i www.oldboy.org

        use_backend www.oldboy.org if www

backend www.oldboy1.org

        server 100.1000.7.9 100.1000.7.9 weight 20 maxconn 30

        server 10.10.0.10 10.10.0.10 weight 9999 maxconn 33333333333

        server 10.10.10.1 10.10.10.1 weight 22 maxconn 2000

        server 2.2.2.4 2.2.2.4 weight 20 maxconn 3000

        server 100.1000.7.9 100.1000.7.9 weight 11 maxconn 30

backend www.oldboy2.org

        server 3.3.3.3 3.3.3.3 weight 20 maxconn 3000

backend www.oldboy20.org

        server 10.10.0.10 10.10.0.10 weight 9999 maxconn 33333333333

2. 添加新标签

#程序运行过程

********************

   1:  fetch

   2:  add

   3:  delete

   4:  modify

   5:  exit

********************

请输入您的操作：>? 2

请输入要添加的信息>? {"backend":"www.oldboy3.org","inform":{"server":"100.1000.7.9","weight":20,"maxconn":30}}

#INFO_new.txt修改后文件内容

global

        log 127.0.1 local2

        daemon

        maxconn 256

        log 127.0.0.1 local2 info

default

        log global

        mode http

        timeout connect 5000ms

        timeout client 50000ms

        timeout server 50000ms

        option dontlognull

listen stats: 8888

        stats enable

        stats uri        /admin

        stats auth       admin:1234

frontend oldboy.org

        bind 0.0.0.0:80

        option httplog

        option httpclose

        option forwardfor

        log global

        acl www hdr_reg(host) -i www.oldboy.org

        use_backend www.oldboy.org if www

backend www.oldboy1.org

        server 100.1000.7.9 100.1000.7.9 weight 20 maxconn 30

        server 10.10.0.10 10.10.0.10 weight 9999 maxconn 33333333333

        server 10.10.10.1 10.10.10.1 weight 22 maxconn 2000

        server 2.2.2.4 2.2.2.4 weight 20 maxconn 3000

backend www.oldboy2.org

        server 3.3.3.3 3.3.3.3 weight 20 maxconn 3000

backend www.oldboy20.org

        server 10.10.0.10 10.10.0.10 weight 9999 maxconn 33333333333

backend www.oldboy3.org

        server 100.1000.7.9 100.1000.7.9 weight 20 maxconn 30

删除

#程序运行过程

********************

   1:  fetch

   2:  add

   3:  delete

   4:  modify

   5:  exit

********************

请输入您的操作：>? 3

请输入要删除的信息>? {"backend":"www.oldboy1.org","inform":{"server":"10.10.0.10","weight":9999,"maxconn":33333333333}}

#INFO_new修改后文件内容

global

        log 127.0.1 local2

        daemon

        maxconn 256

        log 127.0.0.1 local2 info

default

        log global

        mode http

        timeout connect 5000ms

        timeout client 50000ms

        timeout server 50000ms

        option dontlognull

listen stats: 8888

        stats enable

        stats uri        /admin

        stats auth       admin:1234

frontend oldboy.org

        bind 0.0.0.0:80

        option httplog

        option httpclose

        option forwardfor

        log global

        acl www hdr_reg(host) -i www.oldboy.org

        use_backend www.oldboy.org if www

backend www.oldboy1.org

backend www.oldboy1.org

        server 100.1000.7.9 100.1000.7.9 weight 20 maxconn 30

        server 10.10.10.1 10.10.10.1 weight 22 maxconn 2000

        server 2.2.2.4 2.2.2.4 weight 20 maxconn 3000

backend www.oldboy2.org

        server 3.3.3.3 3.3.3.3 weight 20 maxconn 3000

backend www.oldboy20.org

        server 10.10.0.10 10.10.0.10 weight 9999 maxconn 33333333333

修改

#程序运行过程

********************

   1:  fetch

   2:  add

   3:  delete

   4:  modify

   5:  exit

********************

请输入您的操作：>? 4

请输入要修改的信息>? {"backend":"www.oldboy1.org","inform":{"server":"10.10.0.10","weight":9999,"maxconn":33333333333}}

请输入修改后信息>? {"backend":"www.oldboy1.org","inform":{"server":"10.10.0.10","weight":9999,"maxconn":1111}}

#INFO_new.txt文件修改后内容

global

        log 127.0.1 local2

        daemon

        maxconn 256

        log 127.0.0.1 local2 info

default

        log global

        mode http

        timeout connect 5000ms

        timeout client 50000ms

        timeout server 50000ms

        option dontlognull

listen stats: 8888

        stats enable

        stats uri        /admin

        stats auth       admin:1234

frontend oldboy.org

        bind 0.0.0.0:80

        option httplog

        option httpclose

        option forwardfor

        log global

        acl www hdr_reg(host) -i www.oldboy.org

        use_backend www.oldboy.org if www

backend www.oldboy1.org

        server 100.1000.7.9 100.1000.7.9 weight 20 maxconn 30

        server 10.10.0.10 10.10.0.10 weight 9999 maxconn 1111

        server 10.10.10.1 10.10.10.1 weight 22 maxconn 2000

        server 2.2.2.4 2.2.2.4 weight 20 maxconn 3000

backend www.oldboy2.org

        server 3.3.3.3 3.3.3.3 weight 20 maxconn 3000

backend www.oldboy20.org

        server 10.10.0.10 10.10.0.10 weight 9999 maxconn 33333333333

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day05.2-一个文件的增删改查实例

一. 测试程序

二. 功能测试

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