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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.model.content;
import java.util.ArrayList;
import java.util.List;
/**
* Represents the dispatch setup for a content cluster.
* This EITHER has a number of dispatch groups OR a an explicit list of groups.
*
* @author geirst
*/
public class DispatchSpec {
private final Integer numDispatchGroups;
private final List<Group> groups;
private DispatchSpec(Builder builder) {
numDispatchGroups = builder.numDispatchGroups;
groups = builder.groups;
}
public Integer getNumDispatchGroups() { return numDispatchGroups; }
public List<Group> getGroups() {
return groups;
}
public boolean valid() {
return numDispatchGroups != null || groups != null;
}
/**
* Reference to a node which is contained in a dispatch group.
*/
public static class Node {
private final int distributionKey;
public Node(int distributionKey) {
this.distributionKey = distributionKey;
}
public int getDistributionKey() {
return distributionKey;
}
}
/**
* A dispatch group with a list of nodes contained in that group.
*/
public static class Group {
private final List<Node> nodes = new ArrayList<>();
public Group() {
}
public Group addNode(Node node) {
nodes.add(node);
return this;
}
public List<Node> getNodes() {
return nodes;
}
}
public static class Builder {
private Integer numDispatchGroups;
private List<Group> groups;
public DispatchSpec build() {
return new DispatchSpec(this);
}
public Builder setNumDispatchGroups(Integer numDispatchGroups) {
this.numDispatchGroups = numDispatchGroups;
return this;
}
public Builder setGroups(List<Group> groups) {
this.groups = groups;
return this;
}
}
}
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