[tor-bugs] #13574 [Onionoo]: Tweak memory usage of hourly cronjob

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#13574: Tweak memory usage of hourly cronjob
-----------------------------+--------------------------
     Reporter:  karsten      |      Owner:
         Type:  enhancement  |     Status:  needs_review
     Priority:  normal       |  Milestone:
    Component:  Onionoo      |    Version:
   Resolution:               |   Keywords:
Actual Points:               |  Parent ID:
       Points:               |
-----------------------------+--------------------------

Comment (by karsten):

 Here's another stack trace:

 {{{
 Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
         at java.util.Arrays.copyOf(Arrays.java:2367)
         at
 java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:130)
         at
 java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:114)
         at
 java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:415)
         at java.lang.StringBuffer.append(StringBuffer.java:237)
         at java.io.StringWriter.write(StringWriter.java:101)
         at
 org.apache.commons.lang.StringEscapeUtils.escapeJavaStyleString(StringEscapeUtils.java:196)
         at
 org.apache.commons.lang.StringEscapeUtils.escapeJavaStyleString(StringEscapeUtils.java:164)
         at
 org.apache.commons.lang.StringEscapeUtils.escapeJavaScript(StringEscapeUtils.java:131)
         at
 org.torproject.onionoo.docs.DetailsDocument.escapeJSON(DetailsDocument.java:21)
         at
 org.torproject.onionoo.docs.DetailsDocument.setContact(DetailsDocument.java:267)
         at
 org.torproject.onionoo.writer.DetailsDocumentWriter.updateRelayDetailsFiles(DetailsDocumentWriter.java:158)
         at
 org.torproject.onionoo.writer.DetailsDocumentWriter.writeDocuments(DetailsDocumentWriter.java:72)
         at
 org.torproject.onionoo.writer.DocumentWriterRunner.writeDocuments(DocumentWriterRunner.java:29)
         at org.torproject.onionoo.cron.Main.main(Main.java:55)
 }}}

 Added another commit to that branch that avoids `String.replaceAll()` and
 uses `StringUtils.replace()` instead.  Trying out that patch right now.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13574#comment:2>
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