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 | |
package ca.uhn.hl7v2.app; |
28 | |
|
29 | |
import java.io.IOException; |
30 | |
import java.net.InetAddress; |
31 | |
import java.util.concurrent.ExecutorService; |
32 | |
import java.util.concurrent.TimeUnit; |
33 | |
|
34 | |
import ca.uhn.hl7v2.HL7Exception; |
35 | |
import ca.uhn.hl7v2.llp.LLPException; |
36 | |
import ca.uhn.hl7v2.model.Message; |
37 | |
|
38 | |
|
39 | |
|
40 | |
|
41 | |
|
42 | |
|
43 | |
|
44 | |
public class LazyConnection implements Connection { |
45 | |
|
46 | |
private ConnectionData data; |
47 | |
private ExecutorService executor; |
48 | |
private Connection activeConnection; |
49 | |
private LazyInitiator initiator; |
50 | |
|
51 | 15 | public LazyConnection(ConnectionData data, ExecutorService executor) { |
52 | 15 | this.data = data; |
53 | 15 | this.executor = executor; |
54 | 15 | this.initiator = new LazyInitiator(this); |
55 | 15 | } |
56 | |
|
57 | |
public void activate() { |
58 | 0 | if (isEstablished()) activeConnection.activate(); |
59 | 0 | } |
60 | |
|
61 | |
public Initiator getInitiator() { |
62 | 40 | if (isEstablished()) return activeConnection.getInitiator(); |
63 | 10 | return initiator; |
64 | |
} |
65 | |
|
66 | |
public void close() { |
67 | 25 | if (isEstablished()) { |
68 | 15 | activeConnection.close(); |
69 | 15 | activeConnection = null; |
70 | |
} |
71 | 25 | } |
72 | |
|
73 | |
public boolean isOpen() { |
74 | 15 | return isEstablished() && activeConnection.isOpen(); |
75 | |
} |
76 | |
|
77 | |
public ExecutorService getExecutorService() { |
78 | 0 | if (isEstablished()) return activeConnection.getExecutorService(); |
79 | 0 | return executor; |
80 | |
} |
81 | |
|
82 | |
public InetAddress getRemoteAddress() { |
83 | 5 | if (isEstablished()) |
84 | 0 | return activeConnection.getRemoteAddress(); |
85 | 5 | return null; |
86 | |
} |
87 | |
|
88 | |
public Integer getRemotePort() { |
89 | 0 | if (isEstablished()) { |
90 | 0 | return activeConnection.getRemotePort(); |
91 | |
} |
92 | 0 | return null; |
93 | |
} |
94 | |
|
95 | |
boolean isEstablished() { |
96 | 140 | return activeConnection != null && activeConnection.isOpen(); |
97 | |
} |
98 | |
|
99 | |
void establishConnection() throws HL7Exception { |
100 | |
try { |
101 | 15 | activeConnection = ConnectionFactory.openEagerly(data, executor); |
102 | 0 | } catch (Exception e) { |
103 | 0 | throw new HL7Exception(e); |
104 | 15 | } |
105 | 15 | } |
106 | |
|
107 | |
|
108 | |
static class LazyInitiator implements Initiator { |
109 | |
|
110 | |
private LazyConnection connection; |
111 | 15 | private long timeoutMillis = 10000; |
112 | |
|
113 | 15 | LazyInitiator(LazyConnection connection) { |
114 | 15 | this.connection = connection; |
115 | 15 | } |
116 | |
|
117 | |
public synchronized Message sendAndReceive(Message out) throws HL7Exception, LLPException, IOException { |
118 | 15 | if (!connection.isEstablished()) { |
119 | 15 | connection.establishConnection(); |
120 | 15 | setTimeout(timeoutMillis, TimeUnit.MILLISECONDS); |
121 | |
} |
122 | 15 | return connection.getInitiator().sendAndReceive(out); |
123 | |
} |
124 | |
|
125 | |
public synchronized void setTimeout(long timeout, TimeUnit timeunit) { |
126 | 15 | if (connection.isEstablished()) |
127 | 15 | connection.getInitiator().setTimeout(timeout, timeunit); |
128 | |
else |
129 | 0 | this.timeoutMillis = timeunit.toMillis(timeout); |
130 | 15 | } |
131 | |
|
132 | |
public void setTimeoutMillis(int timeout) { |
133 | 0 | setTimeout(timeout, TimeUnit.MILLISECONDS); |
134 | 0 | } |
135 | |
} |
136 | |
|
137 | |
} |