org.neo4j.server.preflight
Class PreFlightTasks

java.lang.Object
  org.neo4j.server.preflight.PreFlightTasks

public class PreFlightTasks
extends Object

These are tasks that are run on server startup that may take a long time to execute, such as recovery, upgrades and so on. This implementation still needs some work, because of some of the refactoring done regarding the NeoServer. Specifically, some of these tasks verify that properties files exist and are valid. Other preflight tasks we might want to add could be auto-generating config files if they don't exist and creating required directories. All of these (including auto-generating neo4j.properties and creating directories) except validating and potentially generating neo4j-server.properties depend on having the server configuration available. Eg. we can't both ensure that file exists within these tests, while at the same time depending on that file existing. The validation is not a problem, because we will refactor the server config to use the new configuration system from the kernel, which automatically validates itself. Ensuring the config file exists (and potentially auto-generating it) is a problem. Either this need to be split into tasks that have dependencies, and tasks that don't. Although, it seems it is only this one edge case, so perhaps accepting that and adding code to the bootstrapper to ensure the config file exists is acceptable.

Constructor Summary

PreFlightTasks(org.neo4j.kernel.logging.Logging logging, PreflightTask... tasks)

Method Summary

PreflightTask	failedTask()
boolean	run()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PreFlightTasks

public PreFlightTasks(org.neo4j.kernel.logging.Logging logging,
                      PreflightTask... tasks)

Method Detail

run

public boolean run()

failedTask

public PreflightTask failedTask()