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From "Leo Simons (JIRA)" <gene...@gump.apache.org>
Subject [jira] Created: (GUMP-105) design a way to build against the last-successful-dependency-build
Date Sun, 27 Mar 2005 22:31:31 GMT
design a way to build against the last-successful-dependency-build
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         Key: GUMP-105
         URL: http://issues.apache.org/jira/browse/GUMP-105
     Project: Gump
        Type: Task
  Components: Python-based Gump  
    Versions: Gump3-beta    
    Reporter: Leo Simons
     Fix For: Gump3-beta


The first algorithm to get right is GUMP-104, where we bail out of building at all if a dependency
dies. The next step to tackle is to build against the last version of the dependency that
/was/ built successfully.

This requires gump to become time-aware beyond a single build run, saving off previous successes
into a repository and knowing about them. It requires a significant extension of the model
where, for example

class BuildFailureRecoveryPlugin(AbstractPlugin):
  visit_project(p):
    if p.state <= FAILED:
      successful_p = historyutil.lookup_last_successful_build(p)
      modelutil.replace(p, succesful_p)
      p.failed_project = p
      p.state == RECOVERED

stages are inserted to keep most of the plugins blissfully unaware of the intelligence going
on. If we get this right that'll be where the staged plugin model will really start to shine,
as the graph theory people can design smart new algorithms (As long as they're compatible
with the basic topsort we're doing in some way), and the build tool people can just, well,
build stuff.

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