[eml-dev] [Bug 5428] New: Leading whitespace in data URL causes download to hang

[bugzilla-daemon at ecoinformatics.org]

http://bugzilla.ecoinformatics.org/show_bug.cgi?id=5428

           Summary: Leading whitespace in data URL causes download to hang
           Product: EML
           Version: 2.1.0
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: P2
         Component: datamanager
        AssignedTo: tao at nceas.ucsb.edu
        ReportedBy: dcosta at lternet.edu
         QAContact: eml-dev at ecoinformatics.org
   Estimated Hours: 0.0


Leading whitespace in a data URL has been demonstrated to cause the Data
Manager to hang during its download operation. A data package that demonstrates
this behavior is:

  http://metacat.lternet.edu/knb/metacat/knb-lter-sbc.10.15

One of the two data table entities in the above data package contains leading
white space:

"\n 
http://sbc.lternet.edu/external/Ocean/Data/Monthly_Water_Sampling/LTER_monthly_bottledata.txt"

The fix for this bug would be for the Data Manager to trim leading and trailing
whitespace from the data URL.

A secondary enhancement would be for the Data Manager to produce a warning in
the form of a quality check whenever it finds that the trimmed URL is different
from the original URL. However, this secondary enhancement should be
implemented in the DATAMANAGER_QUALITY branch rather than in the 'eml' trunk.

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