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// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.provision.lb;
import com.google.common.collect.ImmutableSortedSet;
import com.yahoo.config.provision.HostName;
import com.yahoo.vespa.hosted.provision.maintenance.LoadBalancerExpirer;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import java.util.Set;
/**
* Represents a load balancer for an application.
*
* @author mpolden
*/
public class LoadBalancer {
private final LoadBalancerId id;
private final HostName hostname;
private final Set<Integer> ports;
private final Set<String> networks;
private final Set<Real> reals;
private final boolean inactive;
// TODO: Remove this when no longer used by internal code
public LoadBalancer(LoadBalancerId id, HostName hostname, List<Integer> ports, List<Real> reals, boolean inactive) {
this(id, hostname, ImmutableSortedSet.copyOf(ports), Collections.emptySet(), ImmutableSortedSet.copyOf(reals), inactive);
}
public LoadBalancer(LoadBalancerId id, HostName hostname, Set<Integer> ports, Set<String> networks, Set<Real> reals, boolean inactive) {
this.id = Objects.requireNonNull(id, "id must be non-null");
this.hostname = Objects.requireNonNull(hostname, "hostname must be non-null");
this.ports = ImmutableSortedSet.copyOf(requirePorts(ports));
this.networks = ImmutableSortedSet.copyOf(Objects.requireNonNull(networks, "networks must be non-null"));
this.reals = ImmutableSortedSet.copyOf(Objects.requireNonNull(reals, "targets must be non-null"));
this.inactive = inactive;
}
/** An identifier for this load balancer. The ID is unique inside the zone */
public LoadBalancerId id() {
return id;
}
/** Fully-qualified domain name of this load balancer. This hostname can be used for query and feed */
public HostName hostname() {
return hostname;
}
/** Listening port(s) of this load balancer */
public Set<Integer> ports() {
return ports;
}
/** Networks (CIDR blocks) of this load balancer */
public Set<String> networks() {
return networks;
}
/** Real servers behind this load balancer */
public Set<Real> reals() {
return reals;
}
/**
* Returns whether this load balancer is inactive. Inactive load balancers cannot be re-activated, and are
* eventually removed by {@link LoadBalancerExpirer}.
*/
public boolean inactive() {
return inactive;
}
/** Return a copy of this that is set inactive */
public LoadBalancer deactivate() {
return new LoadBalancer(id, hostname, ports, networks, reals, true);
}
private static Set<Integer> requirePorts(Set<Integer> ports) {
Objects.requireNonNull(ports, "ports must be non-null");
if (ports.isEmpty()) {
throw new IllegalArgumentException("ports must be non-empty");
}
if (!ports.stream().allMatch(port -> port >= 1 && port <= 65535)) {
throw new IllegalArgumentException("all ports must be >= 1 and <= 65535");
}
return ports;
}
}
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