package com.fasterxml.clustermate.service.cfg;
import javax.validation.constraints.Max;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;
import com.fasterxml.storemate.shared.IpAndPort;
/**
* Configuration settings for a single cluster node. Exact usage of
* fields depends on {@link KeyRangeAllocationStrategy} used for
* cluster handling, but all strategies at least use end point
* definition.
*<p>
* Note that two alternate representations are accepted: either "full"
* one with multiple fields, represented by JSON Object; or "simple",
* a String that only contains {@link #ipAndPort}. Latter is useful
* for dynamic configurations.
*/
public class NodeConfig
{
/**
* Ip name (or number) and port that this node instance listens to.
* Usually used in conjunction with node index (which is either
* initialized externally or defined via {@link KeyRangeAllocationStrategy})
* to match incoming configuration settings and stored node state
* information.
*/
@NotNull
public IpAndPort ipAndPort;
/**
* Start offset of they key range this node covers.
* Only used with
* {@link KeyRangeAllocationStrategy#STATIC}; ignored with
* other strategies.
*/
@Min(0)
@Max(Integer.MAX_VALUE)
public int keyRangeStart = 0;
/**
* Length of they key range this node covers.
* Only used with
* {@link KeyRangeAllocationStrategy#STATIC}; ignored with
* other strategies.
*/
@Min(0)
@Max(Integer.MAX_VALUE)
public int keyRangeLength = 0;
// Default ctor used by deserializer when binding from JSON Object
protected NodeConfig() { }
// Alternate internal ctor used when deserializing from simple String
public NodeConfig(String str) throws IllegalArgumentException
{
try {
ipAndPort = new IpAndPort(str);
} catch (Exception e) {
throw new IllegalArgumentException("Invalid endpoint definition for constructing NodeConfig: \""
+str+"\"");
}
}
// yet another constructor for tests, to use with non-static range settings
public NodeConfig(IpAndPort endpoint) {
this(endpoint, 0, 0);
}
// constructor for unit tests
public NodeConfig(String endpoint, int keyStart, int keyLength)
{
this(new IpAndPort(endpoint), keyStart, keyLength);
}
public NodeConfig(IpAndPort endpoint, int keyStart, int keyLength)
{
ipAndPort = endpoint;
keyRangeStart = keyStart;
keyRangeLength = keyLength;
}
}