day05.2-一个文件的增删改查实例
一. 测试程序
1 #INFO.txt源文件内容 2 global 3 log 127.0.1 local2 4 daemon 5 maxconn 256 6 log 127.0.0.1 local2 info 7 default 8 log global 9 mode http 10 timeout connect 5000ms 11 timeout client 50000ms 12 timeout server 50000ms 13 option dontlognull 14 listen stats: 8888 15 stats enable 16 stats uri /admin 17 stats auth admin:1234 18 frontend oldboy.org 19 bind 0.0.0.0:80 20 option httplog 21 option httpclose 22 option forwardfor 23 log global 24 acl www hdr_reg(host) -i www.oldboy.org 25 use_backend www.oldboy.org if www 26 backend www.oldboy1.org 27 server 100.1000.7.9 100.1000.7.9 weight 20 maxconn 30 28 server 10.10.0.10 10.10.0.10 weight 9999 maxconn 33333333333 29 server 10.10.10.1 10.10.10.1 weight 22 maxconn 2000 30 server 2.2.2.4 2.2.2.4 weight 20 maxconn 3000 31 backend www.oldboy2.org 32 server 3.3.3.3 3.3.3.3 weight 20 maxconn 3000 33 backend www.oldboy20.org 34 server 10.10.0.10 10.10.0.10 weight 9999 maxconn 33333333333
1 #bin.py 2 3 """ 4 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 5 输入：标签信息{"backend":"","inform":{"server":"","weight":"","maxconn":""}} 6 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 7 """ 8 def fetch(record): 9 record = eval(record) 10 tag1 = False 11 tag2 = False 12 sub_record = "server "+str(record["inform"]["server"])+" "+str(record["inform"]["server"])+" weight "+str(record["inform"]["weight"])+" maxconn "+str(record["inform"]["maxconn"]) 13 with open("INFO.txt","r") as file: 14 for item in file: 15 if item.strip()=="backend "+record["backend"]: 16 tag1 = True 17 if tag1 and item.strip()==sub_record: 18 tag2 = True 19 break 20 file.close() 21 if tag1 and tag2: 22 return True 23 else: 24 return False 25 26 """ 27 功能：添加标签信息， 28 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 29 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 30 输入：要添加的标签信息{"backend":"","inform":{"server":"","weight":"","maxconn":""}} 31 """ 32 def add(record): 33 record = eval(record) 34 sub_record = "server "+str(record["inform"]["server"])+" "+str(record["inform"]["server"])+" weight "+str(record["inform"]["weight"])+" maxconn "+str(record["inform"]["maxconn"]) 35 tag1 = False 36 tag2 = False 37 with open("INFO.txt","r") as file,\ 38 open("INFO_new.txt","w") as file_new: 39 for item in file: 40 if not tag1: 41 file_new.write(item) 42 if item.strip()=="backend "+record["backend"]: 43 tag1 = True 44 continue 45 if tag1 and item.startswith(" "): 46 file_new.write(item) 47 if tag1 and not item.startswith(" "): 48 file_new.write(" "*8+sub_record+"\n") 49 file_new.write(item) 50 tag2 = True 51 tag1 = False 52 if not tag2: 53 file_new.write("\nbackend "+record["backend"]) 54 file_new.write("\n"+" "*8+sub_record+"\n") 55 file.close() 56 file_new.close() 57 58 """ 59 功能：删除标签信息， 60 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 61 如果要删除的标签信息不存在，则显示提示信息 62 输入：要删除的标签信息{"backend":"","inform":{"server":"","weight":"","maxconn":""}} 63 """ 64 def delete(record): 65 res = fetch(record) 66 if not res: 67 print("要删除的标签信息不存在") 68 return 69 else: 70 tag1 = False 71 record = eval(record) 72 sub_record = "server "+str(record["inform"]["server"])+" "+str(record["inform"]["server"])+" weight "+str(record["inform"]["weight"])+" maxconn "+str(record["inform"]["maxconn"]) 73 with open("INFO.txt","r") as file,\ 74 open("INFO_new.txt","w") as file_new: 75 for item in file: 76 if not tag1: 77 file_new.write(item) 78 if item.strip() == "backend " + record["backend"]: 79 tag1 = True 80 if tag1 and item.strip()!=sub_record: 81 file_new.write(item) 82 if tag1 and item.strip()==sub_record: 83 tag1 = False 84 continue 85 file.close() 86 file_new.close() 87 88 """ 89 功能：修改标签信息， 90 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 91 如果要修改的标签信息不存在，则显示提示信息 92 输入：要修改的标签信息{"backend":"","inform":{"server":"","weight":"","maxconn":""}} 93 修改后标签信息{"backend":"","inform":{"server":"","weight":"","maxconn":""}} 94 """ 95 def modify(recorded,record): 96 res = fetch(recorded) 97 if not res: 98 print("要修改的标签信息不存在") 99 return 100 else: 101 recorded = eval(recorded) 102 sub_recorded = "server "+str(recorded["inform"]["server"])+" "+str(recorded["inform"]["server"])+" weight "+str(recorded["inform"]["weight"])+" maxconn "+str(recorded["inform"]["maxconn"]) 103 record = eval(record) 104 sub_record = "server "+str(record["inform"]["server"])+" "+str(record["inform"]["server"])+" weight "+str(record["inform"]["weight"])+" maxconn "+str(record["inform"]["maxconn"]) 105 if recorded["backend"]!=record["backend"]: 106 print("输入有误") 107 return 108 else: 109 tag1 = False 110 tag2 = False 111 with open("INFO.txt", "r") as file, \ 112 open("INFO_new.txt", "w") as file_new: 113 for item in file: 114 if item.strip()=="backend "+recorded["backend"]: 115 tag1 = True 116 elif tag1 and item.strip()==sub_recorded: 117 tag2 = True 118 if tag2: 119 file_new.write(" "*8+sub_record+"\n") 120 tag1 = False 121 tag2 = False 122 continue 123 elif not tag2: 124 file_new.write(item) 125 file.close() 126 file_new.close() 127 128 Menu_msg = {"1":fetch,"2":add,"3":delete,"4":modify} #功能函数字典 129 menu_msg = ["1: fetch","2: add","3: delete","4: modify","5: exit"] 130 131 while(True): 132 print("*"*20) 133 for item in menu_msg: 134 print(" " + item) 135 print("*"*20) 136 opration = input("请输入您的操作：").strip() 137 if opration=="1": 138 record = input("请输入查询信息").strip() 139 res=Menu_msg[opration](record) 140 print(res) 141 elif opration=="2": 142 record = input("请输入要添加的信息").strip() 143 Menu_msg[opration](record) 144 elif opration=="3": 145 record = input("请输入要删除的信息").strip() 146 Menu_msg[opration](record) 147 elif opration=="4": 148 recorded = input("请输入要修改的信息").strip() 149 record = input("请输入修改后信息").strip() 150 Menu_msg[opration](recorded,record) 151 elif opration=="5": 152 break 153 elif opration not in Menu_msg.keys(): 154 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
