1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
// $Id$
#include "Logging_Handler.h"
#include "Reactor_Singleton.h"
// Default constructor.
Logging_Handler::Logging_Handler (void)
{
}
Logging_Handler::~Logging_Handler (void)
{
REACTOR::instance ()->cancel_timer (this);
this->cli_stream_.close ();
}
// Extract the underlying ACE_SOCK_Stream (e.g., for purposes of
// accept()).
Logging_Handler::operator ACE_SOCK_Stream &()
{
return this->cli_stream_;
}
int
Logging_Handler::handle_timeout (const ACE_Time_Value &,
const void *arg)
{
ACE_ASSERT (arg == this);
ACE_DEBUG ((LM_DEBUG, "(%P|%t) handling timeout from this = %u\n", this));
return 0;
}
// Perform the logging record receive.
int
Logging_Handler::handle_input (ACE_HANDLE)
{
ssize_t n;
size_t len;
// Perform two recv's to emulate record-oriented semantics. Note
// that this code is not entirely portable since it relies on the
// fact that sizeof (ssize_t) is the same on both the sender and
// receiver side. To correctly handle this is painful, and we leave
// it as an exercise for the reader ;-).
switch (n = this->cli_stream_.recv ((void *) &len, sizeof len))
{
case -1:
ACE_ERROR_RETURN ((LM_ERROR, "(%P|%t) %p at host %s\n",
"client logger", this->host_name_), -1);
/* NOTREACHED */
case 0:
ACE_ERROR_RETURN ((LM_ERROR, "(%P|%t) closing log daemon at host %s (fd = %d)\n",
this->host_name_, this->get_handle ()), -1);
/* NOTREACHED */
case sizeof (size_t):
{
ACE_Log_Record lp;
len = ntohl (len);
n = this->cli_stream_.recv_n ((void *) &lp, len);
if (n != len)
ACE_ERROR_RETURN ((LM_ERROR, "(%P|%t) %p at host %s\n",
"client logger", this->host_name_), -1);
/* NOTREACHED */
lp.decode ();
if (lp.length () == n)
{
ACE_DEBUG ((LM_DEBUG, "(%P|%t) "));
lp.print (this->host_name_, 1, cerr);
}
else
ACE_ERROR ((LM_ERROR, "(%P|%t) error, lp.length = %d, n = %d\n",
lp.length (), n));
break;
}
default:
ACE_ERROR_RETURN ((LM_ERROR, "(%P|%t) %p at host %s\n",
"client logger", this->host_name_), -1);
/* NOTREACHED */
}
return 0;
}
// Extract underlying device descriptor.
ACE_HANDLE
Logging_Handler::get_handle (void) const
{
return this->cli_stream_.get_handle ();
}
int
Logging_Handler::open (void)
{
ACE_INET_Addr addr;
if (this->cli_stream_.get_remote_addr (addr) == -1)
return -1;
else
{
ACE_OS::strncpy (this->host_name_, addr.get_host_name (), MAXHOSTNAMELEN + 1);
if (REACTOR::instance ()->register_handler
(this, ACE_Event_Handler::READ_MASK) == -1)
ACE_ERROR_RETURN ((LM_ERROR, "(%P|%t) can't register with reactor\n"), -1);
else if (REACTOR::instance ()->schedule_timer
(this, (const void *) this, ACE_Time_Value (2), ACE_Time_Value (2)) == -1)
ACE_ERROR_RETURN ((LM_ERROR, "can'(%P|%t) t register with reactor\n"), -1);
else
ACE_DEBUG ((LM_DEBUG, "(%P|%t) connected with %s\n", this->host_name_));
return 0;
}
}
// Perform termination activities when deregistered from the ACE_Reactor.
int
Logging_Handler::handle_close (ACE_HANDLE, ACE_Reactor_Mask)
{
// Must be allocated dynamically!
delete this;
return 0;
}
// Perform termination activities when close fails.
int
Logging_Handler::close (void)
{
return this->handle_close (ACE_INVALID_HANDLE,
ACE_Event_Handler::RWE_MASK);
}
|
