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| api exit like amqsaxe in more readable format - resolved |
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| vasilev |
 Posted: Fri Mar 01, 2024 3:45 am Post subject: api exit like amqsaxe in more readable format - resolved |
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Acolyte
Joined: 31 Oct 2014
Posts: 58
Location: Germany
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Hello,
there is a lot information about API Exits and amqsaxe.
I dont find info how to use only the information that is interesting for us - like messagedata, application connected - not in HEX format.
there is mqtracingexit for Instana , that perhaps is doing this, i dont think somebody will provide the source 
This is part of the amqsaxe:
| Code: |
fprintf(fp, "MQPUT\n");
fprintf(fp, TITLE_FORMAT, "BEFORE", buffer1, buffer2);
if (pExitUserArea->Options & OPTIONS_DUMP_PARMS_BEFORE)
DumpParms( fp, pExitParms );
if (pExitUserArea->Options & OPTIONS_DUMP_CONTEXT_BEFORE)
DumpContext( fp, pExitContext );
fprint_hex(fp, "Hconn", pHconn);
fprint_hex(fp, "Hobj" , pHobj);
fprintf(fp, " MsgDesc : %s\n", strptr(ppMsgDesc, "0x%p", buffer1));
DumpHex(fp, *ppMsgDesc, mdSize);
fprintf(fp, " PutMsgOpts : %s\n", strptr(ppPutMsgOpts, "0x%p", buffer1));
DumpHex(fp, *ppPutMsgOpts, pmoSize); |
it is providing such output:
| Code: |
BufferLength : -1116373500
Buffer : 0x0x7ffdbd757df8
0x7ffdbd75a950: 74657374 6D657373 616765 testmessage
AFTER 2024-03-01 12:41:26 1709293286.579304
MsgDesc : 0x0x7ffdbd757e10
0x7ffdbd758620: 4D442020 01000000 00000000 08000000 MD ............
0x7ffdbd758630: FFFFFFFF 00000000 22020000 00000000 ........".......
0x7ffdbd758640: 4D515354 52202020 FFFFFFFF 02000000 MQSTR ........
0x7ffdbd758650: 414D5120 564D5141 50502020 20202020 AMQ VMQAPP
0x7ffdbd758660: DCBEE165 01260040 00000000 00000000 ...e.&.@........
0x7ffdbd758670: 00000000 00000000 00000000 00000000 ................
0x7ffdbd758680: 00000000 00000000 00000000 00000000 ................
0x7ffdbd758690: 00000000 00000000 00000000 00000000 ................
0x7ffdbd7586a0: 00000000 00000000 00000000 00000000 ................
0x7ffdbd7586b0: 00000000 00000000 00000000 00000000 ................
0x7ffdbd7586c0: 00000000 00000000 00000000 00000000 ................
0x7ffdbd7586d0: 00000000 00000000 00000000 00000000 ................
0x7ffdbd7586e0: 00000000 6D716D20 20202020 20202020 ....mqm
0x7ffdbd7586f0: 03393939 00000000 00000000 00000000 .999............
0x7ffdbd758700: 00000000 00000000 00000000 00000006 ................
0x7ffdbd758710: 20202020 20202020 20202020 20202020
0x7ffdbd758720: 20202020 20202020 20202020 20202020
0x7ffdbd758730: 06000000 616D7173 70757420 20202020 ....amqsput
0x7ffdbd758740: 20202020 20202020 20202020 20202020
0x7ffdbd758750: 32303234 30333031 31313431 32363537 2024030111412657 |
Is there any information how to remove all this hex data and return only the readable data on one line ?
like:
2024-03-01 12:41:26 amqsput testmessage
I have started from here (not sure if it is correct), it is writing without hex output:
| Code: |
for (i = 0; (i < 16) && (index < DataLength); i++)
{
if ((i % 4) == 0) pd++;
/* *pd++ = HEX[ *p / 16 ];
*pd++ = HEX[ *p % 16 ]; */
*pa++ = isprint(*p) ? *p : '#';
index++;
p++;
} |
But still - it is writing on different lines. Idea is to return on one line as a variable not to print it on many lines.
| Code: |
MsgDesc : 0x0x7f09500762d0
0x7f0950076a50: MD ############
0x7f0950076a60: ########"#######
0x7f0950076a70: MQPCF ########
0x7f0950076a80: AMQ VMQAPP
0x7f0950076a90: k##e###@########
0x7f0950076aa0: ################
0x7f0950076ab0: ####SYSTEM.BROKE
0x7f0950076ac0: R.INTER.BROKER.C
0x7f0950076ad0: OMMUNICATIONS |
I think it will be good for all to have some more clear output for the api exits.
thank you
_________________
Regards
V.Vasilev
Last edited by vasilev on Sun Mar 03, 2024 11:58 pm; edited 1 time in total |
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| vasilev |
| Posted: Fri Mar 01, 2024 6:25 am Post subject: |
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Acolyte
Joined: 31 Oct 2014
Posts: 58
Location: Germany
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I have experimented with :
char outStr[sizeof(DataLength)];
memcpy(outStr,StringBuffer,sizeof(StringBuffer));
}
fprintf(fp, "%s", outStr);
also tried with return outStr and char * instead of void, but seems something i am missing.
| Code: |
MQPUT
BEFORE 2024-03-01 15:22:17 1709302937.933184
Hconn: (0x7ffed4baea9c) 0x1400006
Hobj: (0x7ffed4baea98) 0x2
MsgDesc :
.... � PutMsgOpts : 0x0x7ffed4baea88
................ W BufferLength : -725947772
Message :
testdata
AFTER 2 |
I have ? symbols, perhaps because of the lenght. not sure how to prevent this
_________________
Regards
V.Vasilev |
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| bruce2359 |
| Posted: Fri Mar 01, 2024 11:48 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9400
Location: US: west coast, almost. Otherwise, enroute.
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I'd strongly suggest leaving the exit in its original and unmodified state, and then write a stand alone app or batch script to read the resulting file excluding what you don't want to see.
In the header info, you are provided with the the buffer address, buffer length, and message content in the usual hex dump format.
0x7ffdbd758620 displays bytes 20-2F displacement of your message
0x7ffdbd758630 displays bytes 30-3f displacement of your message
and so on
| Quote: |
BufferLength : -1116373500
Buffer : 0x0x7ffdbd757df8
0x7ffdbd75a950: 74657374 6D657373 616765 testmessage
AFTER 2024-03-01 12:41:26 1709293286.579304
MsgDesc : 0x0x7ffdbd757e10
0x7ffdbd758620: 4D442020 01000000 00000000 08000000 MD ............
0x7ffdbd758630: FFFFFFFF 00000000 22020000 00000000 ........".......
0x7ffdbd758640: 4D515354 52202020 FFFFFFFF 02000000 MQSTR ........ |
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| vasilev |
| Posted: Fri Mar 01, 2024 1:54 pm Post subject: |
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Acolyte
Joined: 31 Oct 2014
Posts: 58
Location: Germany
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I have created another char * function , returning char that concatenate with strcat the buffer .
the idea behind this is to print each exit in json text and put the content to MQ, that is why only the real text is needed so it can be added to the array.
but still getting some ?? and .... chars, not sure if it is possible to trim only the real text.
_________________
Regards
V.Vasilev |
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| hughson |
| Posted: Sat Mar 02, 2024 7:10 pm Post subject: |
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Padawan
Joined: 09 May 2013
Posts: 1916
Location: Bay of Plenty, New Zealand
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What is it you are trying to achieve with this exit? Are you trying to produce some sort of MQ API tracing? Have you considered using Application Activity Trace rather than using an API Exit?
Cheers,
Morag
_________________
Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
Get your IBM MQ training here!
MQGem Software |
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| vasilev |
| Posted: Sat Mar 02, 2024 10:34 pm Post subject: |
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Acolyte
Joined: 31 Oct 2014
Posts: 58
Location: Germany
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hello Morag,
yes, and some sort of message tracking, here i want to limit the string of a message body to 500 chars because i guess if it is not limited it will be a big load and traffic. and another thing is to not write ..... when there is no char, but only the char.
i wanted to use the other way because the solution will be in java if i am not wrong but it is not supported for z/os :
https://www.ibm.com/docs/en/ibm-mq/9.3?topic=network-application-activity-trace
the idea to make json in the end with all structure that i get is because it is easy to be parsed.
_________________
Regards
V.Vasilev |
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| hughson |
| Posted: Sat Mar 02, 2024 11:22 pm Post subject: |
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Padawan
Joined: 09 May 2013
Posts: 1916
Location: Bay of Plenty, New Zealand
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I hear you say that you want a solution that will work on z/OS, and that is why you cannot use Application Activity Trace, but the API Exit you were mentioning at the start of this thread is also not available on z/OS.
What is your plan for z/OS?
| vasilev wrote: |
| ...and some sort of message tracking ... |
Are you actually making changes to your message data then? Not just writing out trace?
Cheers,
Morag
_________________
Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
Get your IBM MQ training here!
MQGem Software |
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| vasilev |
| Posted: Sun Mar 03, 2024 1:09 am Post subject: |
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Acolyte
Joined: 31 Oct 2014
Posts: 58
Location: Germany
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Morag, thanks.
I have read your pdf instruction, also found an idea of how to output the trace to JSON - with amqsevt (same I am using for monitoring) and this is what I need.
_________________
Regards
V.Vasilev |
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