/
client.rb
204 lines (157 loc) · 4.98 KB
/
client.rb
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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
module Qrack
class ClientTimeout < Timeout::Error; end
class ConnectionTimeout < Timeout::Error; end
# Client ancestor class
class Client
CONNECT_TIMEOUT = 5.0
RETRY_DELAY = 10.0
attr_reader :status, :host, :vhost, :port, :logging, :spec, :heartbeat
attr_accessor :channel, :logfile, :exchanges, :queues, :channels, :message_in, :message_out,
:connecting
def initialize(opts = {})
@host = opts[:host] || 'localhost'
@user = opts[:user] || 'guest'
@pass = opts[:pass] || 'guest'
@vhost = opts[:vhost] || '/'
@logfile = opts[:logfile] || nil
@logging = opts[:logging] || false
@ssl = opts[:ssl] || false
@verify_ssl = opts[:verify_ssl].nil? || opts[:verify_ssl]
@status = :not_connected
@frame_max = opts[:frame_max] || 131072
@channel_max = opts[:channel_max] || 0
@heartbeat = opts[:heartbeat] || 0
@connect_timeout = opts[:timeout] || CONNECT_TIMEOUT
@logger = nil
create_logger if @logging
@message_in = false
@message_out = false
@connecting = false
@channels ||= []
# Create channel 0
@channel = create_channel()
@exchanges ||= {}
@queues ||= {}
end
=begin rdoc
=== DESCRIPTION:
Closes all active communication channels and connection. If an error occurs a
_Bunny_::_ProtocolError_ is raised. If successful, _Client_._status_ is set to <tt>:not_connected</tt>.
==== RETURNS:
<tt>:not_connected</tt> if successful.
=end
def close
# Close all active channels
channels.each do |c|
c.close if c.open?
end
# Close connection to AMQP server
close_connection
# Close TCP Socket
close_socket
end
alias stop close
def connected?
status == :connected
end
def connecting?
connecting
end
def logging=(bool)
@logging = bool
create_logger if @logging
end
def next_payload(options = {})
next_frame(options).payload
end
alias next_method next_payload
def read(*args)
send_command(:read, *args)
end
=begin rdoc
=== DESCRIPTION:
Checks to see whether or not an undeliverable message has been returned as a result of a publish
with the <tt>:immediate</tt> or <tt>:mandatory</tt> options.
==== OPTIONS:
* <tt>:timeout => number of seconds (default = 0.1) - The method will wait for a return
message until this timeout interval is reached.
==== RETURNS:
<tt>{:header => nil, :payload => :no_return, :return_details => nil}</tt> if message is
not returned before timeout.
<tt>{:header, :return_details, :payload}</tt> if message is returned. <tt>:return_details</tt> is
a hash <tt>{:reply_code, :reply_text, :exchange, :routing_key}</tt>.
=end
def returned_message(opts = {})
begin
frame = next_frame(:timeout => opts[:timeout] || 0.1)
rescue Qrack::ClientTimeout
return {:header => nil, :payload => :no_return, :return_details => nil}
end
method = frame.payload
header = next_payload
# If maximum frame size is smaller than message payload body then message
# will have a message header and several message bodies
msg = ''
while msg.length < header.size
msg += next_payload
end
# Return the message and related info
{:header => header, :payload => msg, :return_details => method.arguments}
end
def switch_channel(chann)
if (0...channels.size).include? chann
@channel = channels[chann]
chann
else
raise RuntimeError, "Invalid channel number - #{chann}"
end
end
def write(*args)
send_command(:write, *args)
end
private
def close_socket(reason=nil)
# Close the socket. The server is not considered dead.
@socket.close if @socket and not @socket.closed?
@socket = nil
@status = :not_connected
end
def create_logger
@logfile ? @logger = Logger.new("#{logfile}") : @logger = Logger.new(STDOUT)
@logger.level = Logger::INFO
@logger.datetime_format = "%Y-%m-%d %H:%M:%S"
end
def send_command(cmd, *args)
begin
raise Bunny::ConnectionError, 'No connection - socket has not been created' if !@socket
@socket.__send__(cmd, *args)
rescue Errno::EPIPE, IOError => e
raise Bunny::ServerDownError, e.message
end
end
def socket
return @socket if @socket and (@status == :connected) and not @socket.closed?
begin
# Attempt to connect.
@socket = timeout(@connect_timeout, ConnectionTimeout) do
TCPSocket.new(host, port)
end
if Socket.constants.include? 'TCP_NODELAY'
@socket.setsockopt Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1
end
if @ssl
require 'openssl' unless defined? OpenSSL::SSL
@socket = OpenSSL::SSL::SSLSocket.new(@socket)
@socket.sync_close = true
@socket.connect
@socket.post_connection_check(host) if @verify_ssl
@socket
end
rescue => e
@status = :not_connected
raise Bunny::ServerDownError, e.message
end
@socket
end
end
end