source: WorldVistAEHR/trunk/r/HEALTH_LEVEL_SEVEN-HL/HLCSTCP2.m@ 1259

Last change on this file since 1259 was 623, checked in by George Lilly, 15 years ago

revised back to 6/30/08 version

File size: 9.2 KB
Line 
1HLCSTCP2 ;SFIRMFO/RSD - BI-DIRECTIONAL TCP ;09/13/2006
2 ;;1.6;HEALTH LEVEL SEVEN;**19,43,49,57,63,64,66,67,76,77,87,109,133**;Oct 13,1995;Build 13
3 ;Per VHA Directive 2004-038, this routine should not be modified.
4 ;Sender
5 ;Request connection, send outbound message(s) delimited by MLLP
6 ;Input : HLDP=Logical Link to use
7 ; Set up error trap
8 N $ETRAP,$ESTACK S $ETRAP="D ERROR^HLCSTCP2"
9 N HLMSG,HLPORT,HLRETRY,HLRETMG,HLTCPO,POP
10 ;HLRETRY=number of retranmission for this link,HLRETMG=alert sent
11 S HLTCPO=HLDP,HLMSG="",(HLRETRY,HLRETMG)=0
12 ;
13 ;set IO(0) to the null device
14 S IO(0)=$S(^%ZOSF("OS")["OpenM":$S($$OS^%ZOSV()["VMS":"_NLA0:",$$OS^%ZOSV()["UNIX":"/dev/null",1:$P),^%ZOSF("OS")["DSM":"_NLA0:",1:$P)
15 O IO(0) U IO(0)
16 ;
17 ;persistent conection, open connection first, HLPORT=open port
18 I $G(HLTCPLNK)["Y" F Q:$$OPEN G EXIT:$$STOP^HLCSTCP H 1
19 F D QUE Q:$$STOP^HLCSTCP D:'HLMSG Q:$G(HLCSOUT)
20 . ;no messages to send
21 . D MON^HLCSTCP("Idle") H 3
22 . ;persistent connection, no retention
23 . Q:$G(HLTCPLNK)["Y"
24 . D MON^HLCSTCP("Retention")
25 . N % I 0
26 . ;if message comes in or ask to stop
27 . F %=1:1:HLTCPRET H 1 I $$STOP^HLCSTCP!$O(^HLMA("AC","O",HLDP,0)) Q
28 . E S HLCSOUT=2 Q
29 . Q:$$STOP^HLCSTCP
30 . D MON^HLCSTCP("Idle")
31 ;Close port
32 I $D(HLPORT) D CLOSE^%ZISTCP K HLPORT
33EXIT Q
34 ;
35QUE ; -- Check "OUT" queue for processing IF there is a message do it
36 ; and then check the link if it open or not
37 N HL,HLN,HLARR,HLHDR,HLI,HLJ,HLMSA,HLRESP,HLRESLT,HLRETRM,HLTCP,HLTCPI,X,Z,HLREREAD
38 D MON^HLCSTCP("Check out")
39 ;HLMSG=next msg, set at tag DONE
40 I 'HLMSG S HLMSG=+$O(^HLMA("AC","O",HLDP,0)),HLRETRY=0 Q:'HLMSG
41 ;
42 ;**109**
43 ;Temporarily lock ^HLMA to flush buffer and ensure edits are complete
44 ;L +^HLMA(HLMSG):1 I '$T S HLMSG=0 Q
45 ;L -^HLMA(HLMSG)
46 ;
47 S HLI=+$G(^HLMA(HLMSG,0)),HLJ=$O(^("MSH",0)),HLTCP=""
48 ;don't have message text or MSH, kill x-ref and decrement 'to send'
49 I 'HLI!'HLJ K ^HLMA("AC","O",HLDP,HLMSG) D LLCNT^HLCSTCP(HLDP,3,1) S HLMSG=0 Q
50 ;update msg status to 'being transmitted'; if cancelled decrement link and quit
51 I '$$CHKMSG(1.5) D LLCNT^HLCSTCP(HLDP,3,1) S HLMSG=0 Q
52 ;number of retransmissions for message
53 S HLRETRM=+$P(^HLMA(HLMSG,"P"),U,5)
54 ;retries exceeded, HLRETRA:action i=ignore, r=restart, s=shutdown
55 ;quit if restart or shutdown, link is going down
56 I HLRETRY>HLDRETR D Q:"I"'[HLRETRA
57 . D MON^HLCSTCP("Error")
58 . ;only 1 alert per link up time, don't send if restart
59 . D:'HLRETMG&(HLRETRA'="R")
60 .. ;send alert
61 .. N XQA,XQAMSG,XQAOPT,XQAROU,XQAID,Z
62 .. ;get mailgroup from file 869.3
63 .. S HLRETMG=1,Z=$P($$PARAM^HLCS2,U,8) Q:Z=""
64 .. S XQA("G."_Z)="",XQAMSG=$$HTE^XLFDT($H,2)_" HL7 LL "_$P(^HLCS(870,HLDP,0),U)_" exceeded retries. LL will "_$S(HLRETRA="S":"shutdown.",HLRETRA="R":"restart.",1:"keep trying.")
65 .. D SETUP^XQALERT
66 . ;quit if action is ignore
67 . Q:"I"[HLRETRA
68 . ;this will shutdown this link
69 . S HLCSOUT=1
70 . ;action is shutdown, set shutdown flag so LM won't restart
71 . S:HLRETRA="S" $P(^HLCS(870,HLDP,0),U,15)=1
72 . D STATUS^HLTF0(HLMSG,4,103,"LLP Exceeded Retry Param")
73 I '$$OPEN Q
74 D MON^HLCSTCP("Send")
75 ; -- data passed in global array, success=1
76 I $$WRITE(HLMSG)<0 Q
77 S (HLTCP,HLTCPI)=HLMSG,HLRETRY=HLRETRY+1,HLRETRM=HLRETRM+1
78 ;update status to awaiting response, decrement link if cancelled
79 I '$$CHKMSG(1.7) D LLCNT^HLCSTCP(HLDP,3,1) S HLMSG=0 Q
80 ;set transmission count, get ACKTIMEOUT override
81 S $P(^HLMA(HLMSG,"P"),U,5)=HLRETRM I $P(^("P"),U,7) S HLN("ACKTIME")=+$P(^("P"),U,7)
82 ;get header of message just sent
83 K HLJ M HLJ=^HLMA(HLMSG,"MSH")
84 ;first component of sending app.
85 S HLN("ECH")=$$P^HLTPCK2(.HLJ,2),HLN("SAN")=$P($$P^HLTPCK2(.HLJ,3),$E(HLN("ECH")))
86 ;msg type, msg. id, commit ack, and app. ack parameter
87 S HLN("TYPE")=$$P^HLTPCK2(.HLJ,1),HLN("MID")=$$P^HLTPCK2(.HLJ,10),HLN("ACAT")=$$P^HLTPCK2(.HLJ,15),HLN("APAT")=$$P^HLTPCK2(.HLJ,16)
88 ;MSA segment, message is a response, can't have an a. ack.
89 S Z=$$MSA^HLTP3(+^HLMA(HLMSG,0)) I Z]"" S:HLN("ACAT")="" HLN("ACAT")="NE" S HLN("APAT")="NE"
90 ;for batch/file with commit ack, reset c. ack and a. ack variables
91 I "BHS,FHS"[HLN("TYPE") S Z=$E(HLJ(1,0),5),X=$$P^HLTPCK2(.HLJ,9),HLN("ACAT")=$P(X,Z,5),HLN("APAT")=$P(X,Z,6),HLN("MID")=$$P^HLTPCK2(.HLJ,11)
92 ;get event protocol
93 S HLN("EID")=+$P(^HLMA(HLMSG,0),U,8),X=$G(^ORD(101,HLN("EID"),770))
94 ;set link counter to msg sent
95 D LLCNT^HLCSTCP(HLDP,4)
96 ;commit and app. ack is never, update status to complete and hang UNI-DIRECTIONAL WAIT
97 I HLN("ACAT")="NE",HLN("APAT")="NE" D Q
98 .D DONE(3)
99 .;
100 .;
101 .H $G(HLDWAIT)
102 ;
103 ;do structure is to stack error
104 D
105 . N $ETRAP,$ESTACK S $ETRAP="D RDERR^HLCSTCP2"
106 . ;HL*1.6*87: Read acknowledgement.
107 . ;Loop to re-read from buffer when receiving incorrect ack.
108 . F D Q:'+$G(HLREREAD)
109 .. S HLREREAD=1
110 .. ;override ack timeout
111 .. I $G(HLN("ACKTIME")) N HLDBACK S HLDBACK=HLN("ACKTIME")
112 .. ;check for response, quit if no-response, msg will be resent
113 .. ;HLRESP=ien 773^ien 772 for response message
114 .. S HLRESP=$$READ^HLCSTCP1()
115 .. ;if no response, decrement counter and quit
116 .. I 'HLRESP D Q
117 ...D LLCNT^HLCSTCP(HLDP,4,1)
118 ...S HLREREAD="0^No Response"
119 ...;check if the port needs to be closed and re-opened before the next re-transmission attempt
120 ...I $G(HLDRETRY("CLOSE")) D CLOSE^%ZISTCP K HLPORT
121 .. ;X 0=re-read msg, 1=commit ack, 3=app ack success, 4=error
122 .. S X=$$RSP^HLTP31(HLRESP,.HLN)
123 .. ;X=0, re-read msg. Incorrect ack (bad MSH,MSA,msg id,or sending app)
124 .. Q:'X
125 .. ;commit ack - done
126 .. I X=1 D S HLREREAD="0^Commit Ack" Q
127 ... ;don't need app. ack, set status to complete
128 ... I "NE"[HLN("APAT") D Q
129 ....D DONE(3)
130 ....;
131 ... ;response is deferred, set status to awaiting ack
132 ... D DONE(2)
133 ...;
134 .. ;Error, HLRESLT=error number^error message from HLTP3
135 .. I X=4 D Q
136 ... D DONE(4,+$G(HLRESLT),$P($G(HLRESLT),U,2))
137 ...;
138 ... S HLREREAD="0^Error"
139 .. ;app ack was successful
140 .. D DONE(3) S HLREREAD="0^App Ack"
141 ..;
142 Q
143 ;
144DCSEND ;direct connect
145 ; Set up error trap
146 N $ETRAP,$ESTACK S $ETRAP="D ERROR^HLCSTCP2"
147 ;override ack timeout
148 I $G(HLP("ACKTIME")) N HLDBACK S HLDBACK=HLP("ACKTIME")
149 I $$WRITE(HLMSG)<0 D:$G(HLERROR)]"" Q ;HL*1.6*77
150 . D STATUS^HLTF0(HLMSG,4,$P(HLERROR,"^"),$P(HLERROR,"^",2),1) ;HL*1.6*77
151 . D LLCNT^HLCSTCP(HLDP,3,1)
152 D LLCNT^HLCSTCP(HLDP,4)
153 ;do structure is to stack error
154 D
155 . N $ETRAP,$ESTACK S $ETRAP="D RDERR^HLCSTCP2"
156 . ;HLRESP=ien 773^ien 772 for response message
157 . S HLRESP=$$READ^HLCSTCP1()
158 ;
159 D DONE(3):$G(HLRESP),DONE(4,108,$S($G(HLERROR)]"":$P(HLERROR,"^",2),1:"No response")):'$G(HLRESP)
160 I $G(HLERROR)']"" D
161 .D MON^HLCSTCP("Idle")
162 .I '$G(HLRESP) S HLERROR="108^No response"
163 ;Close port
164 I $D(HLPORT) D CLOSE^%ZISTCP K HLPORT
165 Q
166 ;
167DONE(ST,ERR,ERRMSG) ;set status to complete
168 ;ST=status, ERR=error ien, ERRMSG=error msg
169 D STATUS^HLTF0(HLMSG,ST,$G(ERR),$G(ERRMSG),1)
170 ;
171 ;**109**
172 D DEQUE^HLCSREP(HLDP,"O",HLMSG)
173 ;
174 ;check for more msg.
175 I $G(HLPRIO)'="I" S HLMSG=+$O(^HLMA("AC","O",HLDP,0)),HLRETRY=0
176 Q
177 ;
178CHKMSG(HLI) ;check status of message and update if not cancelled
179 ;input: HLI=new status, HLMSG=ien of msg in 773
180 ;returns 1=msg was updated, 0=msg has been canceled
181 N X
182 ;
183 ;**109**
184 ;F L +^HLMA(HLMSG,"P"):1 Q:$T H 1
185 ;
186 ;
187 ; New HL*1.6*77 code starting here...
188 I '$D(^HLMA(HLMSG,"P")) D Q 0
189 . S HLERROR="2^Missing status field"
190 . D STATUS^HLTF0(HLMSG,4,$P(HLERROR,U),$P(HLERROR,U,2),1)
191 .;
192 .;**109**
193 . D DEQUE^HLCSREP(HLDP,"O",HLMSG)
194 .;L -^HLMA(HLMSG,"P")
195 ;**end 109**
196 ;
197 ; End of HL*1.6*77 modifications
198 ;
199 ;get status, quit if msg was cancelled
200 ;
201 ;**109**
202 ;S X=+^HLMA(HLMSG,"P") I X=3 L -^HLMA(HLMSG,"P") Q 0
203 S X=+^HLMA(HLMSG,"P") Q:X=3 0
204 ;
205 ;update status if it is different
206 I $G(HLI),HLI'=X D STATUS^HLTF0(HLMSG,HLI)
207 ;
208 ;**109**
209 ;L -^HLMA(HLMSG,"P")
210 ;
211 Q 1
212 ;
213WRITE(HLDA) ; write message in HL7 format
214 ; HLDA - ien of message in 773
215 ; - start block $C(11)
216 ; - end block $C(28)
217 ; - record separator $C(13)
218 ;Output(s): 1 - Successful
219 ; -1 - Unsuccessful
220 ;
221 N HLDA2,HLAR,HLI,LINENO,X
222 ;set error trap, used when called from HLTP3
223 ;
224 ; New HL*1.6*77 code starts here...
225 N $ETRAP,$ESTACK S $ETRAP="D ERROR^HLCSTCP2"
226 I $G(^HLMA(HLDA,0))'>0 D Q -1
227 . S HLERROR="2^Message Text pointer missing"
228 S HLDA2=+$G(^HLMA(HLDA,0))
229 ; End of HL*1.6*77 modifications...
230 ;
231 Q:'$G(^HLMA(HLDA,0)) -1 ;HL*1.6*77
232 ; header is in ^HLMA(, message is in ^HL(772,
233 S LINENO=1,HLI=0,HLAR="^HLMA(HLDA,""MSH"")"
234 U IO
235 D W $C(13) S HLAR="^HL(772,HLDA2,""IN"")",HLI=0 D
236 . F S HLI=$O(@HLAR@(HLI)) Q:'HLI S X=$G(^(HLI,0)) D
237 .. ;first line, need start block char.
238 .. S:LINENO=1 X=$C(11)_X
239 .. I X]"" W X,!
240 .. ;send CR for blank lines
241 .. I X="" W $C(13)
242 .. S LINENO=LINENO+1
243 ; Sends end block for this message
244 S X=$C(28)_$C(13)
245 U IO W X,!
246 I $G(IO(0))'="",$G(IO(0))'=IO U IO(0) ;switch to null device if opened to prevent 'leakage'
247 Q 1
248 ;
249OPEN() ; -- Open TCP/IP device (Client)
250 ;HLPORT=port, defined only if port is open
251 ;HLPORTA=number of attempted opens
252 I $D(HLPORT) S IO=HLPORT D Q 1
253 . U IO
254 . I HLOS["OpenM" X "U IO:(::""-M"")" ;use packet mode on Cache'
255 N HLDOM,HLI,HLIP,HLPORTA
256 G OPENA^HLCSTCP3
257 ;
258RDERR D RDERR^HLCSTCP4 Q ; Exceeded 10,000 bytes, so split on 12/2/03-LJA
259ERROR D ERROR^HLCSTCP4 Q ; Exceeded 10,000 bytes, so split on 12/2/03-LJA
260 ;
261CC(X) ;cleanup and close
262 D MON^HLCSTCP(X)
263 I $D(HLPORT) D CLOSE^%ZISTCP K HLPORT
264 H 2
265 Q
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