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Routine: HLOSRVR

HLOSRVR.m

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  1. HLOSRVR ;ALB/CJM- Server for receiving messages - 10/4/94 1pm
  1. ;;1.6;HEALTH LEVEL SEVEN;**126,130,131**;Oct 13, 1995;Build 10
  1. ;
  1. GETWORK(WORK) ;
  1. ;GET WORK function for a single server OR Taskman multi-server
  1. N LINK
  1. I '$$CHKSTOP^HLOPROC,$G(WORK("LINK"))]"",$$GETLINK^HLOTLNK(WORK("LINK"),.LINK),+LINK("SERVER") S WORK("PORT")=LINK("PORT") Q 1
  1. Q 0
  1. ;
  1. DOWORKS(WORK) ;
  1. ;DO WORK rtn for a single server (non-concurrent)
  1. D SERVER(WORK("LINK"))
  1. Q
  1. DOWORKM(WORK) ;
  1. ;DO WORK rtn for a Taskman multi-server (Cache systems only)
  1. D LISTEN^%ZISTCPS(WORK("PORT"),"SERVER^HLOSRVR("""_WORK("LINK")_""")")
  1. Q
  1. ;
  1. VMS2(LINKNAME) ;called from a VMS TCP Service once a connection request has been received. This entry point should be used only if an additional VMS TCPIP Services are being created for HLO.
  1. ;Input:
  1. ; LINKNAME - only pass it in if an additional service is being created on a different port
  1. Q:'$L(LINKNAME)
  1. D VMS
  1. Q
  1. ;
  1. VMS ;Called from VMS TCP Service once a connection request has been received. This entry point should be used only by the standard HLO service that runs on the standard HLO port.
  1. Q:$$CHKSTOP^HLOPROC
  1. D
  1. .Q:$L($G(LINKNAME))
  1. .;
  1. .N PROC,NODE
  1. .S PROC=$O(^HLD(779.3,"B","VMS TCP LISTENER",0))
  1. .I PROC S LINKNAME=$P($G(^HLD(779.3,PROC,0)),"^",14) Q:$L(LINKNAME)
  1. .S NODE=$G(^HLD(779.1,1,0)) I $P(NODE,"^",10) S LINKNAME=$P($G(^HLCS(870,$P(NODE,"^",10),0)),"^") Q:$L(LINKNAME)
  1. .S LINKNAME="HLO DEFAULT LISTENER"
  1. ;
  1. D SERVER(LINKNAME,"SYS$NET")
  1. Q
  1. ;
  1. SERVER(LINKNAME,LOGICAL) ; LINKNAME identifies the logical link, which describes the communication channel to be used
  1. N $ETRAP,$ESTACK S $ETRAP="G ERROR^HLOSRVR1"
  1. N HLCSTATE,INQUE
  1. S INQUE=0
  1. Q:'$$CONNECT(.HLCSTATE,LINKNAME,.LOGICAL)
  1. K LINKNAME
  1. F Q:'HLCSTATE("CONNECTED") D Q:$$CHKSTOP^HLOPROC
  1. .N HLMSTATE,SENT
  1. .;
  1. .;read msg and parse the hdr
  1. .;HLMSTATE("MSA",1) is set with type of ack to return
  1. .I $$READMSG^HLOSRVR1(.HLCSTATE,.HLMSTATE) D
  1. ..;
  1. ..;send an ack if required and save the MSA segment
  1. ..I (HLMSTATE("MSA",1)]"") S SENT=$$WRITEACK(.HLCSTATE,.HLMSTATE) D:HLMSTATE("IEN") SAVEACK(.HLMSTATE,SENT)
  1. ..D:HLMSTATE("IEN") UPDATE(.HLMSTATE,.HLCSTATE)
  1. ..D:HLCSTATE("COUNTS")>4 SAVECNTS^HLOSTAT(.HLCSTATE)
  1. .E D INQUE() H:HLCSTATE("CONNECTED") 1
  1. ;
  1. END D CLOSE^HLOT(.HLCSTATE)
  1. D INQUE()
  1. D SAVECNTS^HLOSTAT(.HLCSTATE)
  1. Q
  1. ;
  1. CONNECT(HLCSTATE,LINKNAME,LOGICAL) ;
  1. ;sets up HLCSTATE() and opens a server connection
  1. ;
  1. N LINK,NODE
  1. S HLCSTATE("CONNECTED")=0
  1. Q:'$$GETLINK^HLOTLNK(LINKNAME,.LINK) 0
  1. Q:+LINK("SERVER")'=1 0
  1. S HLCSTATE("SERVER")=LINK("SERVER")
  1. M HLCSTATE("LINK")=LINK
  1. S HLCSTATE("READ TIMEOUT")=20
  1. S HLCSTATE("OPEN TIMEOUT")=30
  1. S HLCSTATE("READ")="" ;buffer for reads
  1. ;
  1. ;HLCSTATE("BUFFER",<seg>,<line>) write buffer
  1. S HLCSTATE("BUFFER","BYTE COUNT")=0 ;count of bytes in buffer
  1. S HLCSTATE("BUFFER","SEGMENT COUNT")=0 ;count of segments in buffer
  1. ;
  1. S HLCSTATE("COUNTS")=0
  1. S HLCSTATE("MESSAGE ENDED")=0 ;end of message flag
  1. S NODE=^%ZOSF("OS")
  1. S HLCSTATE("SYSTEM","OS")=$S(NODE["DSM":"DSM",NODE["OpenM":"CACHE",NODE["G.TM":"G.TM",1:"")
  1. Q:HLCSTATE("SYSTEM","OS")="" 0
  1. D ;get necessary system parameters
  1. .N SYS,SUB
  1. .D SYSPARMS^HLOSITE(.SYS)
  1. .F SUB="MAXSTRING","DOMAIN","STATION","PROCESSING ID","NORMAL PURGE","ERROR PURGE" S HLCSTATE("SYSTEM",SUB)=SYS(SUB)
  1. .S HLCSTATE("SYSTEM","BUFFER")=SYS("HL7 BUFFER")
  1. I HLCSTATE("LINK","LLP")="TCP" D
  1. .D OPEN^HLOTCP(.HLCSTATE,.LOGICAL)
  1. E ;no other LLP implemented
  1. ;
  1. Q HLCSTATE("CONNECTED")
  1. ;
  1. INQUE(MSGIEN,PARMS) ;
  1. ;puts received messages on the incoming queue and sets the B x-refs
  1. I $G(MSGIEN) S INQUE=INQUE+1 M INQUE(MSGIEN)=PARMS
  1. I ('$G(MSGIEN))!(INQUE>20) S MSGIEN=0 D
  1. .F S MSGIEN=$O(INQUE(MSGIEN)) Q:'MSGIEN D
  1. ..S ^HLB("B",INQUE(MSGIEN,"MSGID"),MSGIEN)=""
  1. ..S ^HLA("B",INQUE(MSGIEN,"DT/TM"),INQUE(MSGIEN,"BODY"))=""
  1. ..D:INQUE(MSGIEN,"PASS")
  1. ...N PURGE
  1. ...S PURGE=+$G(INQUE(MSGIEN,"PURGE"))
  1. ...S PURGE("ACKTOIEN")=$G(INQUE(MSGIEN,"ACKTOIEN"))
  1. ...D INQUE^HLOQUE(INQUE(MSGIEN,"FROM"),INQUE(MSGIEN,"QUEUE"),MSGIEN,INQUE(MSGIEN,"ACTION"),.PURGE)
  1. .K INQUE S INQUE=0
  1. Q
  1. ;
  1. SAVEACK(HLMSTATE,SENT) ;
  1. ;Input:
  1. ; SENT - flag = 1 if transmission of ack succeeded, 0 otherwise
  1. ;
  1. N NODE,I
  1. S $P(NODE,"^")=HLMSTATE("MSA","DT/TM OF MESSAGE")
  1. S $P(NODE,"^",2)=HLMSTATE("MSA","MESSAGE CONTROL ID")
  1. S $P(NODE,"^",3)="MSA"
  1. F I=1:1:3 S NODE=NODE_"|"_$G(HLMSTATE("MSA",I))
  1. S ^HLB(HLMSTATE("IEN"),4)=NODE
  1. S:SENT $P(^HLB(HLMSTATE("IEN"),0),"^",$S($E(HLMSTATE("MSA",1))="A":18,1:17))=1
  1. Q
  1. ;
  1. UPDATE(HLMSTATE,HLCSTATE) ;
  1. ;Updates status and purge date when appropriate
  1. ;Also, sets the "B" xrefs, files 777,778, and places message on the incoming queue
  1. ;
  1. N PARMS,PURGE,WAIT
  1. S PARMS("PASS")=0
  1. I HLMSTATE("STATUS","ACTION")]"",HLMSTATE("STATUS")'="SE" S PARMS("PASS")=1,$P(^HLB(HLMSTATE("IEN"),0),"^",6)=HLMSTATE("STATUS","QUEUE")
  1. D:'PARMS("PASS") ;if not passing to the app, set the purge date
  1. .I HLMSTATE("STATUS")="" S HLMSTATE("STATUS")="SU"
  1. .S:HLMSTATE("BATCH") WAIT=HLCSTATE("SYSTEM","ERROR PURGE")
  1. .S:'HLMSTATE("BATCH") WAIT=$S(HLMSTATE("STATUS")="SE":24*HLCSTATE("SYSTEM","ERROR PURGE"),1:HLCSTATE("SYSTEM","NORMAL PURGE"))
  1. .S PURGE=$$FMADD^XLFDT($$NOW^XLFDT,,WAIT)
  1. .S $P(^HLB(HLMSTATE("IEN"),0),"^",9)=PURGE
  1. .S ^HLB("AD","IN",PURGE,HLMSTATE("IEN"))=""
  1. .;if this is an app ack, purge the original message at the same time
  1. .I $G(HLMSTATE("ACK TO","IEN")),'HLMSTATE("BATCH") D
  1. ..S $P(^HLB(+HLMSTATE("ACK TO","IEN"),0),"^",9)=PURGE
  1. ..S ^HLB("AD","IN",PURGE,+HLMSTATE("ACK TO","IEN"))=""
  1. ;
  1. ;if not waiting for an application ack, set the status now even if passing to the app - but don't set the purge until the infiler passes the message
  1. I HLMSTATE("STATUS")="",HLMSTATE("HDR","APP ACK TYPE")'="AL" S HLMSTATE("STATUS")="SU"
  1. I HLMSTATE("STATUS")'="" S $P(^HLB(HLMSTATE("IEN"),0),"^",20)=HLMSTATE("STATUS") S:$G(HLMSTATE("MSA",3))]"" $P(^HLB(HLMSTATE("IEN"),0),"^",21)=HLMSTATE("MSA",3) D:HLMSTATE("STATUS")="SE"
  1. .N APP
  1. .S APP=HLMSTATE("HDR","RECEIVING APPLICATION") S:APP="" APP="UNKNOWN" S ^HLB("ERRORS","SE",APP,HLMSTATE("DT/TM"),HLMSTATE("IEN"))=""
  1. ;
  1. ;set the necessary parms for passing the msg to the app via the infiler
  1. D:PARMS("PASS")
  1. .N I,FROM
  1. .S FROM=HLMSTATE("HDR","SENDING FACILITY",1)
  1. .I HLMSTATE("HDR","SENDING FACILITY",2)]"" S FROM=FROM_"~"_HLMSTATE("HDR","SENDING FACILITY",2)_"~"_HLMSTATE("HDR","SENDING FACILITY",3)
  1. .I FROM="" S FROM="UNKNOWN SENDING FACILITY"
  1. .S PARMS("FROM")=FROM,PARMS("QUEUE")=HLMSTATE("STATUS","QUEUE"),PARMS("ACTION")=HLMSTATE("STATUS","ACTION")
  1. .I HLMSTATE("STATUS")'="" S PARMS("PURGE")=1
  1. .S:$G(HLMSTATE("ACK TO","IEN")) PARMS("ACKTOIEN")=HLMSTATE("ACK TO","IEN") ;to insure that the infiler will know to set the purge date at the same time as the initial message
  1. ;
  1. S PARMS("BODY")=HLMSTATE("BODY")
  1. S PARMS("DT/TM")=HLMSTATE("DT/TM")
  1. S PARMS("MSGID")=HLMSTATE("ID")
  1. D INQUE(HLMSTATE("IEN"),.PARMS)
  1. Q
  1. ;
  1. WRITEACK(HLCSTATE,HLMSTATE) ;
  1. ;Sends an accept ack
  1. ;
  1. ;Input:
  1. ; HLCSTATE (pass by reference) defines the communication channel
  1. ; HLMSTATE (pass by reference) the message being acked
  1. ; ("MSA",1) - value for MSA-1
  1. ; ("MSA",2) - value for MSA-2
  1. ; ("MSA",3) - value for MSA-3
  1. ; ("HDR") - parsed values for the message being ack'd
  1. ;Output:
  1. ; Function returns 1 if successful, 0 otherwise
  1. ; HLMSTATE("MSA","MESSAGE CONTROL ID") - the msg id of the ack
  1. ; HLMSTATE(,"MSA","DT/TM OF MESSAGE") - from the ack header
  1. ;
  1. N HDR,SUB,FS,CS,MSA,ACKID,TIME
  1. ;Hard-code the delimiters, the standard requires that the receiving system accept the delimiters listed in the header
  1. S FS="|"
  1. S CS="^"
  1. S TIME=$$NOW^XLFDT
  1. S HLMSTATE("MSA","DT/TM OF MESSAGE")=TIME
  1. S ACKID=HLCSTATE("SYSTEM","STATION")_" "_$$NEWIEN^HLOF778A("OUT")
  1. S HLMSTATE("MSA","MESSAGE CONTROL ID")=ACKID
  1. ;
  1. S HDR(1)="MSH"_FS_"^~\&"_FS_HLMSTATE("HDR","RECEIVING APPLICATION")_FS_HLCSTATE("SYSTEM","STATION")_CS_HLCSTATE("SYSTEM","DOMAIN")_CS_"DNS"_FS
  1. S HDR(1)=HDR(1)_HLMSTATE("HDR","SENDING APPLICATION")_FS_HLMSTATE("HDR","SENDING FACILITY",1)_CS_HLMSTATE("HDR","SENDING FACILITY",2)_CS_HLMSTATE("HDR","SENDING FACILITY",3)
  1. ;
  1. S HDR(2)=FS_$$HLDATE^HLFNC(TIME,"TS")_FS_FS_"ACK"_FS_ACKID_FS_HLMSTATE("HDR","PROCESSING ID")_FS_"2.4"_FS_FS_FS_"NE"_FS_"NE"
  1. ;
  1. S MSA(1)="MSA"_FS
  1. F SUB=1:1:3 S MSA(1)=MSA(1)_HLMSTATE("MSA",SUB)_FS
  1. I $$WRITEHDR^HLOT(.HLCSTATE,.HDR),$$WRITESEG^HLOT(.HLCSTATE,.MSA),$$ENDMSG^HLOT(.HLCSTATE) S HLCSTATE("COUNTS","ACKS")=$G(HLCSTATE("COUNTS","ACKS"))+1 Q 1
  1. S HLMSTATE("MSA","DT/TM OF MESSAGE")=""
  1. Q 0