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ENT-1716 Documentation for hot cold ha (#628)

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cburlinchon 2018-03-28 11:44:07 +01:00 committed by GitHub
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11
docs/source/high-availablility.rst
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@ -42,6 +42,17 @@ The configuration snippet below shows the relevant settings.
} }
} }
Fields
------
:on: Whether hot cold high availability is turned on, defaulted to ``false``.
:machineName: Unique name for node.
:updateInterval: Rate(milliseconds) at which the running node updates the mutual exclusion lease.
:waitInterval: Amount of time(milliseconds) to wait since last mutual exclusion lease update before being able to become the master node. This has to be greater than updateInterval.
Hot Warm Hot Warm
~~~~~~~~ ~~~~~~~~

5
node/src/main/kotlin/net/corda/node/services/persistence/RunOnceService.kt
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@ -35,10 +35,11 @@ const val VERSION = "version"
* Makes sure only one node is able to write to database. * Makes sure only one node is able to write to database.
* Running node updates row whilst running. When a node starts up, it checks no one has updated row within a specified time frame. * Running node updates row whilst running. When a node starts up, it checks no one has updated row within a specified time frame.
* *
* @property pid process id * @property machineName unique name for node.
* @property pid process id.
* @property updateInterval rate(milliseconds) at which the running node updates row. * @property updateInterval rate(milliseconds) at which the running node updates row.
* @property waitInterval amount of time(milliseconds) to wait since last row update before being able to become the master node. * @property waitInterval amount of time(milliseconds) to wait since last row update before being able to become the master node.
* @property updateExecutor runs a row update every [updateInterval] milliseconds * @property updateExecutor runs a row update every [updateInterval] milliseconds.
*/ */
class RunOnceService(private val database: CordaPersistence, private val machineName: String, private val pid: String, class RunOnceService(private val database: CordaPersistence, private val machineName: String, private val pid: String,
private val updateInterval: Long, private val waitInterval: Long, private val updateInterval: Long, private val waitInterval: Long,