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
|
require 'breakpoint'
require 'optparse'
options = {
:ClientURI => nil,
:ServerURI => "druby://localhost:42531",
:RetryDelay => 10
}
ARGV.options do |opts|
script_name = File.basename($0)
opts.banner = [
"Usage: ruby #{script_name} [options] [server uri]",
"",
"This tool lets you connect to a breakpoint service ",
"which was started via Breakpoint.activate_drb.",
"",
"The server uri defaults to druby://localhost:42531"
].join("\n")
opts.separator ""
opts.on("-c", "--client-uri=uri",
"Run the client on the specified uri.",
"This can be used to specify the port",
"that the client uses to allow for back",
"connections from the server.",
"Default: Find a good URI automatically.",
"Example: -c druby://localhost:12345"
) { |options[:ClientURI]| }
opts.on("-s", "--server-uri=uri",
"Connect to the server specified at the",
"specified uri.",
"Default: druby://localhost:42531"
) { |options[:ServerURI]| }
opts.on("-R", "--retry-delay=delay", Integer,
"Automatically try to reconnect to the",
"server after delay seconds when the",
"connection failed or timed out.",
"A value of 0 disables automatical",
"reconnecting completely.",
"Default: 10"
) { |options[:RetryDelay]| }
opts.separator ""
opts.on("-h", "--help",
"Show this help message."
) { puts opts; exit }
opts.parse!
end
options[:ServerURI] = ARGV[0] if ARGV[0]
DRb.start_service(options[:ClientURI])
begin
service = DRbObject.new(nil, options[:ServerURI])
begin
service.register_eval_handler do |code|
result = eval(code, TOPLEVEL_BINDING)
result.extend(DRb::DRbUndumped) rescue nil
result
end
service.register_collision_handler do
msg = [
" *** Breakpoint service collision ***",
" Another Breakpoint service tried to use the",
" port already occupied by this one. It will",
" keep waiting until this Breakpoint service",
" is shut down.",
" ",
" If you are using the Breakpoint library for",
" debugging a Rails or other CGI application",
" this likely means that this Breakpoint",
" session belongs to an earlier, outdated",
" request and should be shut down via 'exit'."
].join("\n")
if RUBY_PLATFORM["win"] then
# This sucks. Sorry, I'm not doing this because
# I like funky message boxes -- I need to do this
# because on Windows I have no way of displaying
# my notification via puts() when gets() is still
# being performed on STDIN. I have not found a
# better solution.
begin
require 'tk'
root = TkRoot.new { withdraw }
Tk.messageBox('message' => msg, 'type' => 'ok')
root.destroy
rescue Exception
puts "", msg, ""
end
else
puts "", msg, ""
end
end
service.register_handler do |workspace, message|
puts message
IRB.start(nil, nil, workspace)
end
loop do
begin
service.ping
rescue DRb::DRbConnError => error
puts "Server exited. Exiting..."
exit!
end
sleep(0.5)
end
ensure
service.unregister_handler
end
rescue Exception => error
if options[:RetryDelay] > 0 then
puts "No connection to breakpoint service at #{options[:ServerURI]}:",
" (#{error})",
" Reconnecting in #{options[:RetryDelay]} seconds..."
sleep options[:RetryDelay]
retry
else
raise
end
end
|
