++ed by:

1 PAUSE user(s)
2 non-PAUSE user(s).

Andrew Johnson
and 1 contributors


  • Helios::Tutorial - a tutorial for getting started with Helios
  • helios.pl - Launch a daemon to service jobs in the Helios job processing system
  • helios_job_submit.pl - Submit a job to the Helios job processing system from the cmd line
  • helios_log_clean.pl - Clean old log and history entries from the Helios database
  • submitJob.pl - CGI script to receive jobs for Helios via HTTP POST



Changes for version 2.40

  • -NEW Extensible logging subsystem (Helios::Logger) -NEW Helios::Error::BaseError exception class; acts as parent for entire Helios::Error:: hierarchy -NEW Helios::Service->metarun() method to modularize metajob handling and provide for extensible metajob support -NEW service run() and metarun() methods now run in an eval block as a process safety measure to catch uncaught exceptions. -NEW MP3IndexerService example application including in eg/ directory (StubService also rewritten for clarity) -REVISED Helios::Service->work() method no longer pays attention to return value of run() method (this feature was under- documented, misunderstood, and caused problems with eval {} and Try::Tiny exception handling -REWRITTEN submitJob.pl CGI script; supports sending XML stream in addition to form encoding, no longer dependent on HELIOS_CLASS_MAP -REWRITTEN Helios::TestService; more modern Perl and easier to understand -REWRITTEN install instructions, including specific instructions for Red Hat- and Ubuntu-based systems, and including CPAN install
  • bundles (still experimental)
  • -REWRITTEN Helios::Tutorial -Helios::Service: fixed MaxRetries() and RetryInterval() retry job methods -Helios::Job: changed failed() and failedNoRetry() to limit the char length of the error recorded to 254 chars. That's one less than the default size of the db field in the ERROR table, so it should prevent long errors like stack traces from unexpectedly blowing up worker processes and potentially losing jobs. -Revised dependencies: DBI 1.52 (shipped with RHEL/CentOS 5) XML::Simple 2.14 (shipped with RHEL/CentOS 5) Removed XML::SAX dependency (unnecessary) Removed XML::Namespace dependency (unnecessary) Removed XML::Parser dependency (unnecessary) -Removed deprecated classes, methods, and other files: Helios::Service->parseArgXML() (deprecated since 2.00) Helios::Worker (deprecated since 2.00) sql/helios_schema_20upgrade.sql -Updated copyright notices -Switch to "Linux-style" versioning: odd minor version == development version even minor version == stable version second minor number == patch level (we're still also using Perl-style _ for devel versions too)