perfSONAR User Q&A and Other Discussion

[Jerome Durand <>]

Hi all,

This case was submitted initially on December the 22nd. Seems that there 
was no answer at all, certainly due to a long festive period you all 
appreciated hopefully!

Is that possible that someone answers Barney's question, or maybe just 
ask him needed clarification of his problem? Please cc 
 list so that we have tracking of all 
submitted cases.

It's maybe the first email sent to that list, we need to show how much 
responsive we are!

Thanks !

Jerome

-------- Original Message --------
Subject: Parse errors in request for rrd AVERAGE data
Date: Thu, 22 Dec 2005 09:21:43 -0500 (EST)
From: 

To: 


Hi I've been trying to set up a perfsonar MA and I've been running into 
problems.

I've tried both the CVS and packaged version of the java service and 
have had more luck with the cvs version.

If I use the MATestClient I eventually get an error indicating a problem 
connecting with the service.  I'm not really a Java export but Looking 
at the source code I believe that this test client will never work as 
the documentation indicates it should.  It appears to always connect to 
http://mu.dante.org.uk:8090/axis/services/MeasurementArchiveService and 
also always creates its own request file rather than taking it from an 
argument in the client-run-target.xml file.
If I use the CVS version there is a SOAPClient that appears to work as 
the documentation indicates.  When I get it to send a metadata request 
the service replies appropriately.

If I request all the data in the rrd using the following request the 
service responds correctly :
<?xml version="1.0" encoding="UTF-8"?>

<nmwg:message type="SetupDataRequest"
                   id="datarq1-1"
                   xmlns="http://ggf.org/ns/nmwg/tools/org/perfsonar/1.0/";

xmlns:perfsonar="http://ggf.org/ns/nmwg/tools/org/perfsonar/1.0/";
                   xmlns:nmwg="http://ggf.org/ns/nmwg/base/2.0/";
                   xmlns:nmtm="http://ggf.org/ns/nmwg/time/2.0/";
                   xmlns:nmwgt="http://ggf.org/ns/nmwg/topology/2.0/";>
  <!-- <nmtm:time type="unix" value="1107492095" /> -->

  <nmwg:parameters id="msgparam1">
    <nmwg:parameter name="authToken">UCL</nmwg:parameter>
  </nmwg:parameters>

  <!-- The previous fully qualified metadata *could* be
       included in the message, but it should not be necessary
       since the key's should fully define the selection
       of data wanted. -->

  <nmwg:metadata id="meta1">
    <nmwg:key>
      <nmwg:parameters id="param1">
        <nmwg:parameter 
name="file">/var/local/rrd/UCL-FNAL_CDF.rrd</nmwg:parameter>
        <nmwg:parameter name="dataSource">in</nmwg:parameter>
      </nmwg:parameters>
    </nmwg:key>
  </nmwg:metadata>

  <nmwg:metadata id="meta2">
    <nmwg:key>
      <nmwg:parameters id="param1">
        <nmwg:parameter 
name="file">/var/local/rrd/UCL-FNAL_CDF.rrd</nmwg:parameter>
        <nmwg:parameter name="dataSource">out</nmwg:parameter>
      </nmwg:parameters>
    </nmwg:key>
  </nmwg:metadata>

  <!-- triggers to indicate head of chains -->
  <nmwg:data id="data1" metadataIdRef="meta1" />
  <nmwg:data id="data2" metadataIdRef="meta2" />

</nmwg:message>


however when I try and get some "Filtered" data using the following 
request I get an error :

<nmwg:message id="msg5"
                   type="SetupDataRequest"

xmlns:perfsonar="http://ggf.org/ns/nmwg/tools/org/perfsonar/1.0/";
                   xmlns:nmwg="http://ggf.org/ns/nmwg/base/2.0/";
                   xmlns:nmwgt="http://ggf.org/ns/nmwg/topology/2.0/";
                   xmlns:select="http://ggf.org/ns/nmwg/ops/select/2.0/";>
  <!-- <nmtm:time type="unix" value="1127250480" /> -->

  <nmwg:parameters id="msgparam1">
    <nmwg:parameter name="authToken">UCL</nmwg:parameter>
    <nmwg:parameter name="timeValue">11351774850</nmwg:parameter>
    <nmwg:parameter name="timeType">unix</nmwg:parameter>
  </nmwg:parameters>

  <!-- Consider situation 3, wherein we are sending down a cookedup 
key, this
       would be the most compact representation, and we should get back the
       same data as the previous 2 cases. -->

  <nmwg:metadata id="meta1">
    <nmwg:key>
      <nmwg:parameters id="param1">
        <nmwg:parameter 
name="file">/var/local/rrd/UCL-FNAL_CDF.rrd</nmwg:parameter>
        <nmwg:parameter name="dataSource">out</nmwg:parameter>
                        <!-- Whether or not the selection parameters make
                        sense depends on the specific backend.  RRD 
tool only
                        supprts these 4 parameters, so anything else will
                        produce an error.  No need for operators like 
in the
                        general select, just a start and end time.
                         -->
        <nmwg:parameter name="startTime">1135173885</nmwg:parameter>
        <nmwg:parameter name="endTime">1135177485</nmwg:parameter>
        <nmwg:parameter 
name="consolidationFunction">AVERAGE</nmwg:parameter>
        <nmwg:parameter name="resolution">60</nmwg:parameter>
      </nmwg:parameters>
    </nmwg:key>
  </nmwg:metadata>

  <!-- trigger to get stuff back -->
  <nmwg:data id="data1" metadataIdRef="meta1"/>

</nmwg:message>

with the error :
     [java] End point: 
http://193.60.252.10:8080/axis/services/MeasurementArchiveService
     [java] Request file: /usr/local/sonar/perfsonar/ant/requestdata.xml
     [java] Response file: /usr/local/sonar/perfsonar/ant/responsedata.xml
     [java] SOAPClient.makeRequest: General exception encountered by client
     [java] AxisFault
     [java]  faultCode: 
{http://schemas.xmlsoap.org/soap/envelope/}Server.userException
     [java]  faultSubcode:
     [java]  faultString: 
org.perfsonar.service.commons.exceptions.SystemException: 
RRDInformationReader.parseInformationFile: Parse error occurred
     [java]  faultActor:
     [java]  faultNode:
     [java]  faultDetail:
     [java] 
{http://xml.apache.org/axis/}hostname:Lonm.hep.rcn.ucl.ac.uk

     [java] org.perfsonar.service.commons.exceptions.SystemException: 
RRDInformationReader.parseInformationFile: Parse error occurred.

Also when I try using the perfsonar UI the debug log shows :

2005-12-22 14:02:09,812 [Thread-8] DEBUG org.perfsonar.client.MARequest 
- <nmwg:message type="MetadataKeyRequest" 
xmlns:nmwg="http://ggf.org/ns/nmwg/base/2.0/"; 
xmlns:nmwgt="http://ggf.org/ns/nmwg/topology/2.0/"; 
xmlns:perfsonar="http://ggf.org/ns/nmwg/tools/org/perfsonar/1.0/"; 
xmlns:select="http://ggf.org/ns/nmwg/ops/select/2.0/";><nmwg:metadata 
id="meta1"><perfsonar:subject 
id="iusub1"><nmwgt:interface/></perfsonar:subject><nmwg:eventType>utilization</nmwg:eventType></nmwg:metadata><nmwg:data 
id="data1" metadataIdRef="meta1"/></nmwg:message>
2005-12-22 14:02:10,109 [Thread-8] ERROR org.perfsonar.client.MARequest 
- Problem contacting service...org.xml.sax.SAXParseException: The markup 
in the document preceding the root element must be well-formed.
2005-12-22 14:02:10,109 [Thread-8] DEBUG org.perfsonar.client.MARequest -
Sent query using AXIS...
2005-12-22 14:02:10,109 [Thread-8] DEBUG org.perfsonar.client.MARequest -
Received answer (?)...
2005-12-22 14:02:10,109 [Thread-8] ERROR org.perfsonar.client.MARequest 
- General exception encountered by clientjava.lang.NullPointerException
2005-12-22 14:02:10,109 [Thread-8] INFO  org.perfsonar.client.MARequest 
- Client exiting

If anyone can help me I would greatly appreciate it.

Many Thanks

Barney Garrett