Package hudson.init

Logic for Hudson startup.

See: Description

Package hudson.init Description

Logic for Hudson startup.

Hudson's start up is based on the same idea as the modern Unix init mechanism like initng/upstart/SMF. It first builds a set of Tasks that are units of the initialization work, and have them declare dependencies among themselves. For example, jobs are only loaded after all the plugins are initialized, and restoring the build queue requires all the jobs to be loaded.

Such micro-scopic dependencies are organized into a bigger directed acyclic graph, which is then executed via Session. During execution of the reactor, additional tasks can be discovered and added to the DAG. We use this additional indirection to:

  1. Perform initialization in parallel where possible.
  2. Provide progress report on where we are in the initialization.
  3. Collect status of the initialization and their failures.

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