SimplePlacementFactory.SimplePlacementPlugin (Solr 9.0.0 core API)

java.lang.Object
- org.apache.solr.cluster.placement.plugins.SimplePlacementFactory.SimplePlacementPlugin

All Implemented Interfaces:: PlacementPlugin

Enclosing class:: SimplePlacementFactory

public static class SimplePlacementFactory.SimplePlacementPlugin
extends Object
implements PlacementPlugin

Constructor Summary

Constructors
Constructor Description

SimplePlacementPlugin()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`List<PlacementPlan>`	`computePlacements(Collection<PlacementRequest> requests, PlacementContext placementContext)`	Request from plugin code to compute multiple placements.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.solr.cluster.placement.PlacementPlugin
computePlacement, verifyAllowedModification

- Constructor Detail
  - SimplePlacementPlugin
```
public SimplePlacementPlugin()
```
- Method Detail
  - computePlacements
```
public List<PlacementPlan> computePlacements(Collection<PlacementRequest> requests,
                                             PlacementContext placementContext)
                                      throws PlacementException
```
    Description copied from interface: PlacementPlugin
    
    Request from plugin code to compute multiple placements. If multiple placements are requested, then the PlacementPlan computed for each PlacementRequest will be used to affect the starting state for each subsequent PlacementRequest in the list. This means that each PlacementRequest is computed in the context of the previous PlacementRequest's already having been implemented. Note this method must be reentrant as a plugin instance may (read will) get multiple such calls in parallel.
    Configuration is passed upon creation of a new instance of this class by PlacementPluginFactory.createPluginInstance().
    
    Specified by:
    
    computePlacements in interface PlacementPlugin
    
    Parameters:
    
    requests - requests for placing new replicas or moving existing replicas on the cluster.
    
    Returns:
    
    plan satisfying all placement requests.
    
    Throws:
    
    PlacementException