PriorityComparator (elasticsearch-extend 3.2 API)

java.lang.Object
- org.elasticsearch.gateway.PriorityComparator

All Implemented Interfaces:

Comparator<ShardRouting>
```
public abstract class PriorityComparator
extends Object
implements Comparator<ShardRouting>
```
A comparator that compares ShardRouting based on it's indexes priority (index.priority), it's creation date (index.creation_date), or eventually by it's index name in reverse order. We try to recover first shards from an index with the highest priority, if that's the same we try to compare the timestamp the index is created and pick the newer first (time-based indices, here the newer indices matter more). If even that is the same, we compare the index name which is useful if the date is baked into the index name. ie logstash-2015.05.03.

Constructor Summary

Constructors
Constructor Description

PriorityComparator()

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`compare(ShardRouting o1, ShardRouting o2)`
`static PriorityComparator`	`getAllocationComparator(RoutingAllocation allocation)`	Returns a PriorityComparator that uses the RoutingAllocation index metadata to access the index setting per index.
`protected abstract Settings`	`getIndexSettings(Index index)`

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

Methods inherited from interface java.util.Comparator
equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail
- PriorityComparator
```
public PriorityComparator()
```

Method Detail

compare

public final int compare(ShardRouting o1,
                         ShardRouting o2)

Specified by:: compare in interface Comparator<ShardRouting>

getIndexSettings

protected abstract Settings getIndexSettings(Index index)

getAllocationComparator
```
public static PriorityComparator getAllocationComparator(RoutingAllocation allocation)
```
Returns a PriorityComparator that uses the RoutingAllocation index metadata to access the index setting per index.