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Re: [tor-bugs] #22279 [Metrics/metrics-lib]: simplify and avoid repetition in ParserHelper methods

#22279: simplify and avoid repetition in ParserHelper methods
---------------------------------+-----------------------------------
 Reporter:  iwakeh               |          Owner:  karsten
     Type:  enhancement          |         Status:  needs_review
 Priority:  Medium               |      Milestone:  metrics-lib 1.8.0
Component:  Metrics/metrics-lib  |        Version:
 Severity:  Normal               |     Resolution:
 Keywords:                       |  Actual Points:
Parent ID:                       |         Points:
 Reviewer:                       |        Sponsor:
---------------------------------+-----------------------------------

Comment (by iwakeh):

 I only added a RuntimeException in a code part that according to its
 comment shouldn't be reached:
 {{{
 --- a/src/main/java/org/torproject/descriptor/impl/ParseHelper.java
 +++ b/src/main/java/org/torproject/descriptor/impl/ParseHelper.java
 @@ -333,6 +333,8 @@ public class ParseHelper {
            new String[]{ validatedString }, 0, 0, ",", Integer.class,
 result);
      } catch (DescriptorParseException e) {
 -      /* Should have caught in earlier validation step. */
 +      throw new RuntimeException("Should have been caught in earlier
 validation "
 +          + "step, but wasn't. ", e);
      }
      return result;
    }
 }}}

 and made the tests fail:
 {{{
 ...
    [junit] Testcase: testDirreqStatsValid took 0.009 sec
     [junit]     Caused an ERROR
     [junit] Should have caught in earlier validation step, but wasn't.
     [junit] java.lang.RuntimeException: Should have been caught in earlier
 validation step, but wasn't.
     [junit]     at
 org.torproject.descriptor.impl.ParseHelper.convertCommaSeparatedKeyIntegerValueList(ParseHelper.java:336)
     [junit]     at
 org.torproject.descriptor.impl.ExtraInfoDescriptorImpl.getDirreqV2Ips(ExtraInfoDescriptorImpl.java:1005)
     [junit]     at
 org.torproject.descriptor.impl.ExtraInfoDescriptorImplTest.testDirreqStatsValid(ExtraInfoDescriptorImplTest.java:1307)
     [junit] Caused by: org.torproject.descriptor.DescriptorParseException:
 Line '' contains an illegal key in list element ''.
     [junit]     at
 org.torproject.descriptor.impl.ParseHelper.parseStringKeyTValueList(ParseHelper.java:436)
     [junit]     at
 org.torproject.descriptor.impl.ParseHelper.convertCommaSeparatedKeyIntegerValueList(ParseHelper.java:332)
     [junit]
 ...
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22279#comment:7>
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