1 import select
 2 import socket
 3 import sys
 4 import queue
 5 
 6 
 7 server = socket.socket()
 8 server.setblocking(0)
 9 
10 server_addr = (‘localhost‘,10000)
11 
12 print(‘starting up on %s port %s‘ % server_addr)
13 server.bind(server_addr)
14 
15 server.listen(5)
16 
17 
18 inputs = [server, ] #自己也要监测呀,因为server本身也是个fd
19 outputs = []
20 
21 message_queues = {}
22 
23 while True:
24     print("waiting for next event...")
25 
26     readable, writeable, exeptional = select.select(inputs,outputs,inputs) #如果没有任何fd就绪,那程序就会一直阻塞在这里
27 
28     for s in readable: #每个s就是一个socket
29 
30         if s is server: #别忘记,上面我们server自己也当做一个fd放在了inputs列表里,传给了select,如果这个s是server,代表server这个fd就绪了,
31             #就是有活动了, 什么情况下它才有活动? 当然 是有新连接进来的时候 呀
32             #新连接进来了,接受这个连接
33             conn, client_addr = s.accept()
34             print("new connection from",client_addr)
35             conn.setblocking(0)
36             inputs.append(conn) #为了不阻塞整个程序,我们不会立刻在这里开始接收客户端发来的数据, 把它放到inputs里, 下一次loop时,这个新连接
37             #就会被交给select去监听,如果这个连接的客户端发来了数据 ,那这个连接的fd在server端就会变成就续的,select就会把这个连接返回,返回到
38             #readable 列表里,然后你就可以loop readable列表,取出这个连接,开始接收数据了, 下面就是这么干 的
39 
40             message_queues[conn] = queue.Queue() #接收到客户端的数据后,不立刻返回 ,暂存在队列里,以后发送
41 
42         else: #s不是server的话,那就只能是一个 与客户端建立的连接的fd了
43             #客户端的数据过来了,在这接收
44             data = s.recv(1024)
45             if data:
46                 print("收到来自[%s]的数据:" % s.getpeername()[0], data)
47                 message_queues[s].put(data) #收到的数据先放到queue里,一会返回给客户端
48                 if s not  in outputs:
49                     outputs.append(s) #为了不影响处理与其它客户端的连接 , 这里不立刻返回数据给客户端
50 
51 
52             else:#如果收不到data代表什么呢? 代表客户端断开了呀
53                 print("客户端断开了",s)
54 
55                 if s in outputs:
56                     outputs.remove(s) #清理已断开的连接
57 
58                 inputs.remove(s) #清理已断开的连接
59 
60                 del message_queues[s] ##清理已断开的连接
61 
62 
63     for s in writeable:
64         try :
65             next_msg = message_queues[s].get_nowait()
66 
67         except queue.Empty:
68             print("client [%s]" %s.getpeername()[0], "queue is empty..")
69             outputs.remove(s)
70 
71         else:
72             print("sending msg to [%s]"%s.getpeername()[0], next_msg)
73             s.send(next_msg.upper())
74 
75 
76     for s in exeptional:
77         print("handling exception for ",s.getpeername())
78         inputs.remove(s)
79         if s in outputs:
80             outputs.remove(s)
81         s.close()
82 
83         del message_queues[s]

 1 import socket
 2 import sys
 3 
 4 messages = [ b‘This is the message. ‘,
 5              b‘It will be sent ‘,
 6              b‘in parts.‘,
 7              ]
 8 server_address = (‘localhost‘, 10000)
 9 
10 # Create a TCP/IP socket
11 socks = [ socket.socket(socket.AF_INET, socket.SOCK_STREAM),
12           socket.socket(socket.AF_INET, socket.SOCK_STREAM),
13           ]
14 
15 # Connect the socket to the port where the server is listening
16 print(‘connecting to %s port %s‘ % server_address)
17 for s in socks:
18     s.connect(server_address)
19 
20 for message in messages:
21 
22     # Send messages on both sockets
23     for s in socks:
24         print(‘%s: sending "%s"‘ % (s.getsockname(), message) )
25         s.send(message)
26 
27     # Read responses on both sockets
28     for s in socks:
29         data = s.recv(1024)
30         print( ‘%s: received "%s"‘ % (s.getsockname(), data) )
31         if not data:
32             print(sys.stderr, ‘closing socket‘, s.getsockname() )

 1 import selectors
 2 import socket
 3  
 4 sel = selectors.DefaultSelector()
 5  
 6 def accept(sock, mask):
 7     conn, addr = sock.accept()  # Should be ready
 8     print(‘accepted‘, conn, ‘from‘, addr)
 9     conn.setblocking(False)
10     sel.register(conn, selectors.EVENT_READ, read)
11  
12 def read(conn, mask):
13     data = conn.recv(1000)  # Should be ready
14     if data:
15         print(‘echoing‘, repr(data), ‘to‘, conn)
16         conn.send(data)  # Hope it won‘t block
17     else:
18         print(‘closing‘, conn)
19         sel.unregister(conn)
20         conn.close()
21  
22 sock = socket.socket()
23 sock.bind((‘localhost‘, 10000))
24 sock.listen(100)
25 sock.setblocking(False)
26 sel.register(sock, selectors.EVENT_READ, accept)
27  
28 while True:
29     events = sel.select()
30     for key, mask in events:
31         callback = key.data
32         callback(key.fileobj, mask)

 1 import paramiko
 2 
 3 private_key = paramiko.RSAKey.from_private_key_file(‘/home/auto/.ssh/id_rsa‘)
 4 
 5 transport = paramiko.Transport((‘hostname‘, 22))
 6 transport.connect(username=‘wupeiqi‘, pkey=private_key)
 7 
 8 ssh = paramiko.SSHClient()
 9 ssh._transport = transport
10 
11 stdin, stdout, stderr = ssh.exec_command(‘df‘)
12 
13 transport.close()

 1 import paramiko
 2 from io import StringIO
 3 
 4 key_str = """-----BEGIN RSA PRIVATE KEY-----
 5 MIIEpQIBAAKCAQEAq7gLsqYArAFco02/55IgNg0r7NXOtEM3qXpb/dabJ5Uyky/8
 6 NEHhFiQ7deHIRIuTW5Zb0kD6h6EBbVlUMBmwJrC2oSzySLU1w+ZNfH0PE6W6fans
 7 H80whhuc/YgP+fjiO+VR/gFcqib8Rll5UfYzf5H8uuOnDeIXGCVgyHQSmt8if1+e
 8 7hn1MVO1Lrm9Fco8ABI7dyv8/ZEwoSfh2C9rGYgA58LT1FkBRkOePbHD43xNfAYC
 9 tfLvz6LErMnwdOW4sNMEWWAWv1fsTB35PAm5CazfKzmam9n5IQXhmUNcNvmaZtvP
10 c4f4g59mdsaWNtNaY96UjOfx83Om86gmdkKcnwIDAQABAoIBAQCnDBGFJuv8aA7A
11 ZkBLe+GN815JtOyye7lIS1n2I7En3oImoUWNaJEYwwJ8+LmjxMwDCtAkR0XwbvY+
12 c+nsKPEtkjb3sAu6I148RmwWsGncSRqUaJrljOypaW9dS+GO4Ujjz3/lw1lrxSUh
13 IqVc0E7kyRW8kP3QCaNBwArYteHreZFFp6XmtKMtXaEA3saJYILxaaXlYkoRi4k8
14 S2/K8aw3ZMR4tDCOfB4o47JaeiA/e185RK3A+mLn9xTDhTdZqTQpv17/YRPcgmwz
15 zu30fhVXQT/SuI0sO+bzCO4YGoEwoBX718AWhdLJFoFq1B7k2ZEzXTAtjEXQEWm6
16 01ndU/jhAasdfasdasdfasdfa3eraszxqwefasdfadasdffsFIfAsjQb4HdkmHuC
17 OeJrJOd+CYvdEeqJJNnF6AbHyYHIECkj0Qq1kEfLOEsqzd5nDbtkKBte6M1trbjl
18 HtJ2Yb8w6o/q/6Sbj7wf/cW3LIYEdeVCjScozVcQ9R83ea05J+QOAr4nAoGBAMaq
19 UzLJfLNWZ5Qosmir2oHStFlZpxspax/ln7DlWLW4wPB4YJalSVovF2Buo8hr8X65
20 lnPiE41M+G0Z7icEXiFyDBFDCtzx0x/RmaBokLathrFtI81UCx4gQPLaSVNMlvQA
21 539GsubSrO4LpHRNGg/weZ6EqQOXvHvkUkm2bDDJAoGATytFNxen6GtC0ZT3SRQM
22 WYfasdf3xbtuykmnluiofasd2sfmjnljkt7khghmghdasSDFGQfgaFoKfaawoYeH
23 C2XasVUsVviBn8kPSLSVBPX4JUfQmA6h8HsajeVahxN1U9e0nYJ0sYDQFUMTS2t8
24 RT57+WK/0ONwTWHdu+KnaJECgYEAid/ta8LQC3p82iNAZkpWlGDSD2yb/8rH8NQg
25 9tjEryFwrbMtfX9qn+8srx06B796U3OjifstjJQNmVI0qNlsJpQK8fPwVxRxbJS/
26 pMbNICrf3sUa4sZgDOFfkeuSlgACh4cVIozDXlR59Z8Y3CoiW0uObEgvMDIfenAj
27 98pl3ZkCgYEAj/UCSni0dwX4pnKNPm6LUgiS7QvIgM3H9piyt8aipQuzBi5LUKWw
28 DlQC4Zb73nHgdREtQYYXTu7p27Bl0Gizz1sW2eSgxFU8eTh+ucfVwOXKAXKU5SeI
29 +MbuBfUYQ4if2N/BXn47+/ecf3A4KgB37Le5SbLDddwCNxGlBzbpBa0=
30 -----END RSA PRIVATE KEY-----"""
31 
32 private_key = paramiko.RSAKey(file_obj=StringIO(key_str))
33 transport = paramiko.Transport((‘10.0.1.40‘, 22))
34 transport.connect(username=‘wupeiqi‘, pkey=private_key)
35 
36 ssh = paramiko.SSHClient()
37 ssh._transport = transport
38 
39 stdin, stdout, stderr = ssh.exec_command(‘df‘)
40 result = stdout.read()
41 
42 transport.close()
43 
44 print(result)

 1 import pika
 2 connection = pika.BlockingConnection(pika.ConnectionParameters(
 3         host=‘localhost‘))
 4 channel = connection.channel()
 5  
 6 channel.queue_declare(queue=‘hello‘)
 7  
 8 channel.basic_publish(exchange=‘‘,
 9                       routing_key=‘hello‘,
10                       body=‘Hello World!‘)
11 print(" [x] Sent ‘Hello World!‘")
12 connection.close()

 1 import pika
 2 connection = pika.BlockingConnection(pika.ConnectionParameters(
 3         host=‘localhost‘))
 4 channel = connection.channel()
 5  
 6 channel.queue_declare(queue=‘hello‘)
 7  
 8 def callback(ch, method, properties, body):
 9     print(" [x] Received %r" % body)
10  
11 channel.basic_consume(callback,
12                       queue=‘hello‘,
13                       no_ack=True)
14  
15 print(‘ [*] Waiting for messages. To exit press CTRL+C‘)
16 channel.start_consuming()

 1 import pika
 2 
 3 connection = pika.BlockingConnection(pika.ConnectionParameters(
 4         host=‘10.211.55.4‘))
 5 channel = connection.channel()
 6 
 7 channel.queue_declare(queue=‘hello‘)
 8 
 9 def callback(ch, method, properties, body):
10     print(" [x] Received %r" % body)
11     import time
12     time.sleep(10)
13     print ‘ok‘
14     ch.basic_ack(delivery_tag = method.delivery_tag)
15 
16 channel.basic_consume(callback,
17                       queue=‘hello‘,
18                       no_ack=False)
19 
20 print(‘ [*] Waiting for messages. To exit press CTRL+C‘)
21 channel.start_consuming()

import pika

connection = pika.BlockingConnection(pika.ConnectionParameters(host=‘10.211.55.4‘))
channel = connection.channel()

# make message persistent
channel.queue_declare(queue=‘hello‘, durable=True)

channel.basic_publish(exchange=‘‘,
                      routing_key=‘hello‘,
                      body=‘Hello World!‘,
                      properties=pika.BasicProperties(
                          delivery_mode=2, # make message persistent
                      ))
print(" [x] Sent ‘Hello World!‘")
connection.close()

 1 import pika
 2 
 3 connection = pika.BlockingConnection(pika.ConnectionParameters(host=‘10.211.55.4‘))
 4 channel = connection.channel()
 5 
 6 # make message persistent
 7 channel.queue_declare(queue=‘hello‘, durable=True)
 8 
 9 
10 def callback(ch, method, properties, body):
11     print(" [x] Received %r" % body)
12     import time
13     time.sleep(10)
14     print ‘ok‘
15     ch.basic_ack(delivery_tag = method.delivery_tag)
16 
17 channel.basic_consume(callback,
18                       queue=‘hello‘,
19                       no_ack=False)
20 
21 print(‘ [*] Waiting for messages. To exit press CTRL+C‘)
22 channel.start_consuming()

import pika

connection = pika.BlockingConnection(pika.ConnectionParameters(host=‘10.211.55.4‘))
channel = connection.channel()

# make message persistent
channel.queue_declare(queue=‘hello‘)


def callback(ch, method, properties, body):
    print(" [x] Received %r" % body)
    import time
    time.sleep(10)
    print ‘ok‘
    ch.basic_ack(delivery_tag = method.delivery_tag)

channel.basic_qos(prefetch_count=1)

channel.basic_consume(callback,
                      queue=‘hello‘,
                      no_ack=False)

print(‘ [*] Waiting for messages. To exit press CTRL+C‘)
channel.start_consuming()

 1 import pika
 2 import sys
 3 
 4 connection = pika.BlockingConnection(pika.ConnectionParameters(
 5         host=‘localhost‘))
 6 channel = connection.channel()
 7 
 8 channel.exchange_declare(exchange=‘logs‘,
 9                          type=‘fanout‘)
10 
11 message = ‘ ‘.join(sys.argv[1:]) or "info: Hello World!"
12 channel.basic_publish(exchange=‘logs‘,
13                       routing_key=‘‘,
14                       body=message)
15 print(" [x] Sent %r" % message)
16 connection.close()

import pika

connection = pika.BlockingConnection(pika.ConnectionParameters(
        host=‘localhost‘))
channel = connection.channel()

channel.exchange_declare(exchange=‘logs‘,
                         type=‘fanout‘)

result = channel.queue_declare(exclusive=True)
queue_name = result.method.queue

channel.queue_bind(exchange=‘logs‘,
                   queue=queue_name)

print(‘ [*] Waiting for logs. To exit press CTRL+C‘)

def callback(ch, method, properties, body):
    print(" [x] %r" % body)

channel.basic_consume(callback,
                      queue=queue_name,
                      no_ack=True)

channel.start_consuming()

 1 import pika
 2 import sys
 3 
 4 connection = pika.BlockingConnection(pika.ConnectionParameters(
 5         host=‘localhost‘))
 6 channel = connection.channel()
 7 
 8 channel.exchange_declare(exchange=‘direct_logs‘,
 9                          type=‘direct‘)
10 
11 result = channel.queue_declare(exclusive=True)
12 queue_name = result.method.queue
13 
14 severities = sys.argv[1:]
15 if not severities:
16     sys.stderr.write("Usage: %s [info] [warning] [error]\n" % sys.argv[0])
17     sys.exit(1)
18 
19 for severity in severities:
20     channel.queue_bind(exchange=‘direct_logs‘,
21                        queue=queue_name,
22                        routing_key=severity)
23 
24 print(‘ [*] Waiting for logs. To exit press CTRL+C‘)
25 
26 def callback(ch, method, properties, body):
27     print(" [x] %r:%r" % (method.routing_key, body))
28 
29 channel.basic_consume(callback,
30                       queue=queue_name,
31                       no_ack=True)
32 
33 channel.start_consuming()

 1 import pika
 2 import sys
 3 
 4 connection = pika.BlockingConnection(pika.ConnectionParameters(
 5         host=‘localhost‘))
 6 channel = connection.channel()
 7 
 8 channel.exchange_declare(exchange=‘direct_logs‘,
 9                          type=‘direct‘)
10 
11 severity = sys.argv[1] if len(sys.argv) > 1 else ‘info‘
12 message = ‘ ‘.join(sys.argv[2:]) or ‘Hello World!‘
13 channel.basic_publish(exchange=‘direct_logs‘,
14                       routing_key=severity,
15                       body=message)
16 print(" [x] Sent %r:%r" % (severity, message))
17 connection.close()