1 | # @author Donnie Cameron (macnod)
|
---|
2 | # @url https://github.com/macnod/DcServer
|
---|
3 | # @readme http://donnieknows.com/blog/perl-sockets-swimming-thread-pool
|
---|
4 |
|
---|
5 | package SocketsSwimmingThreadPoolServer;
|
---|
6 |
|
---|
7 | use lib '.';
|
---|
8 | use threads;
|
---|
9 | use threads::shared;
|
---|
10 | use Thread::Queue;
|
---|
11 | use IO::Socket;
|
---|
12 | use Time::HiRes qw/sleep/;
|
---|
13 | use strict;
|
---|
14 | use warnings;
|
---|
15 |
|
---|
16 | my $stop :shared;
|
---|
17 | my $accept_queue = Thread::Queue->new;
|
---|
18 | my $closed_queue = Thread::Queue->new;
|
---|
19 |
|
---|
20 | sub new {
|
---|
21 | # Params: host, port, thread_count, eom_marker, main_yield, main_cb,
|
---|
22 | # done_cb, processor_cb
|
---|
23 | my ($proto, %param)= @_;
|
---|
24 | my $class= ref($proto) || $proto;
|
---|
25 | bless +{
|
---|
26 | socket_defaults => +{
|
---|
27 | LocalHost => $param{host} || 'localhost',
|
---|
28 | LocalPort => $param{port} || 8191},
|
---|
29 | thread_count => $param{thread_count} || 10,
|
---|
30 | main_yield => $param{main_yield} || 5,
|
---|
31 | main_cb => $param{main_cb} || sub {},
|
---|
32 | done_cb => $param{done_cb} || sub {},
|
---|
33 | processor_cb => $param{processor_cb} || \&processor,
|
---|
34 | eom_marker => $param{eom_marker} || "\\n\\.\\n",
|
---|
35 | thread_pool => undef
|
---|
36 | } => $class;
|
---|
37 | }
|
---|
38 |
|
---|
39 | # This callback (for processor_cb) simply explains no other processor function
|
---|
40 | # defined.
|
---|
41 | sub processor
|
---|
42 | {
|
---|
43 | my ($data, $ip, $tid, $fnstop)= @_;
|
---|
44 | return "[tid=$tid; ip=$ip] No function implemented";
|
---|
45 | }
|
---|
46 |
|
---|
47 | sub start
|
---|
48 | {
|
---|
49 | my $self= shift;
|
---|
50 |
|
---|
51 | # Start a thread to dispatch incoming requests
|
---|
52 | threads->create(sub {$self->accept_requests})->detach;
|
---|
53 |
|
---|
54 | # Start the thread pool to handle dispatched requests
|
---|
55 | for (1 .. $self->{thread_count})
|
---|
56 | {
|
---|
57 | threads->create(sub {$self->request_handler})->detach;
|
---|
58 | }
|
---|
59 |
|
---|
60 | # Start a loop for performing tasks in the background, while
|
---|
61 | # handling requests
|
---|
62 | $self->main_loop;
|
---|
63 |
|
---|
64 | $self->{done_cb}->();
|
---|
65 | }
|
---|
66 |
|
---|
67 | sub stop
|
---|
68 | {
|
---|
69 | my $self= shift;
|
---|
70 | $stop= 1;
|
---|
71 | }
|
---|
72 |
|
---|
73 | sub main_loop {
|
---|
74 | my $self= shift;
|
---|
75 | my $counter= 1;
|
---|
76 | until($stop) {
|
---|
77 | $self->{main_cb}->($counter++, sub {$self->stop});
|
---|
78 | sleep $self->{main_yield};
|
---|
79 | }
|
---|
80 | }
|
---|
81 |
|
---|
82 | sub accept_requests {
|
---|
83 | my $self= shift;
|
---|
84 | my ($csocket, $n, %socket);
|
---|
85 | my $lsocket= new IO::Socket::INET(
|
---|
86 | %{$self->{socket_defaults}},
|
---|
87 | Proto => 'tcp',
|
---|
88 | Listen => 1,
|
---|
89 | Reuse => 1);
|
---|
90 | die "Can't create listerner socket. Server can't start. $!." unless $lsocket;
|
---|
91 | until($stop) {
|
---|
92 | $csocket= $lsocket->accept;
|
---|
93 | $n= fileno $csocket;
|
---|
94 | $socket{$n}= $csocket;
|
---|
95 | $accept_queue->enqueue($n . ' ' . inet_ntoa($csocket->peeraddr));
|
---|
96 | while($n= $closed_queue->dequeue_nb) {
|
---|
97 | $socket{$n}->shutdown(2);
|
---|
98 | delete $socket{$n}}}
|
---|
99 | $lsocket->shutdown(2);
|
---|
100 | }
|
---|
101 |
|
---|
102 | sub request_handler
|
---|
103 | {
|
---|
104 | my $self= shift;
|
---|
105 | my ($n, $ip, $data);
|
---|
106 | my ($receive_time, $process_time, $send_time);
|
---|
107 | until($stop)
|
---|
108 | {
|
---|
109 | ($n, $ip)= split / /, $accept_queue->dequeue;
|
---|
110 | next unless $n;
|
---|
111 | open my $socket, '+<&=' . $n or die $!;
|
---|
112 | if(defined($data = $self->receive_client_request($socket)))
|
---|
113 | {
|
---|
114 | my $result = $self->{processor_cb}->($data, $ip, threads->tid, sub {$self->stop});
|
---|
115 | print $socket $result, "\n.\n";
|
---|
116 | }
|
---|
117 | close $socket;
|
---|
118 | $closed_queue->enqueue($n);
|
---|
119 | }
|
---|
120 | }
|
---|
121 |
|
---|
122 | sub receive_client_request
|
---|
123 | {
|
---|
124 | my ($self, $socket)= @_;
|
---|
125 | my ($eom, $buffer, $data)= $self->{eom_marker};
|
---|
126 | while($buffer= <$socket>)
|
---|
127 | {
|
---|
128 | $data.= $buffer;
|
---|
129 | last if $data =~ s/$eom$//;
|
---|
130 | }
|
---|
131 | return $data;
|
---|
132 | }
|
---|
133 |
|
---|
134 | 1;
|
---|