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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.config.provision.zone;
import com.yahoo.config.provision.CloudName;
import com.yahoo.config.provision.Environment;
import com.yahoo.config.provision.RegionName;
import com.yahoo.config.provision.SystemName;
import java.util.Objects;
/**
* Unique identifier for a Zone; use when referencing them.
*
* Serialised form is 'environment.region'.
*
* @author jonmv
*/
public class ZoneId {
// TODO: Replace usages of environment + region with usages of this.
// TODO: Remove static factory methods not specifying cloud and system
private final Environment environment;
private final RegionName region;
private final CloudName cloud;
private final SystemName system;
private ZoneId(Environment environment, RegionName region, CloudName cloud, SystemName system) {
this.environment = Objects.requireNonNull(environment, "environment must be non-null");
this.region = Objects.requireNonNull(region, "region must be non-null");
this.cloud = Objects.requireNonNull(cloud, "cloud must be non-null");
this.system = Objects.requireNonNull(system, "system must be non-null");
}
private ZoneId(Environment environment, RegionName region) {
this(environment, region, CloudName.defaultName(), SystemName.defaultSystem());
}
public static ZoneId from(Environment environment, RegionName region) {
return new ZoneId(environment, region);
}
public static ZoneId from(SystemName system, Environment environment, RegionName region) {
return new ZoneId(environment, region, CloudName.defaultName(), system);
}
public static ZoneId from(Environment environment, RegionName region, CloudName cloud, SystemName system) {
return new ZoneId(environment, region, cloud, system);
}
public static ZoneId from(String environment, String region) {
return from(Environment.from(environment), RegionName.from(region));
}
/** Create from a serialised ZoneId. Inverse of {@code ZoneId.value()}. */
public static ZoneId from(String value) {
String[] parts = value.split("\\.");
switch (parts.length) {
case 2:
return from(parts[0], parts[1]);
case 4:
return from(parts[2], parts[3], parts[0], parts[1]);
default:
throw new IllegalArgumentException("Cannot deserialize zone id '" + value + "'");
}
}
public static ZoneId from(Environment environment, RegionName region, CloudName cloud) {
return new ZoneId(environment, region, cloud, SystemName.defaultSystem());
}
public static ZoneId from(String environment, String region, String cloud) {
return new ZoneId(Environment.from(environment), RegionName.from(region), CloudName.from(cloud), SystemName.defaultSystem());
}
public static ZoneId from(String environment, String region, String cloud, String system) {
return new ZoneId(Environment.from(environment), RegionName.from(region), CloudName.from(cloud), SystemName.from(system));
}
public static ZoneId defaultId() {
return new ZoneId(Environment.defaultEnvironment(), RegionName.defaultName());
}
public Environment environment() {
return environment;
}
public RegionName region() {
return region;
}
public CloudName cloud() {
return cloud;
}
public SystemName system() {
return system;
}
/** Returns the serialised value of this. Inverse of {@code ZoneId.from(String value)}. */
public String value() {
return environment + "." + region;
// TODO: Change to the below when there only methods use constructor including cloud and system are used and
// all serialized values contain cloud and system
// return cloud + "." + system + "." + environment + "." + region;
}
@Override
public String toString() {
return "zone " + value() + " in " + cloud;
// TODO: Use the below (need to fix some use of toString() in tests first)
//return "zone " + cloud + "." + system + "." + environment + "." + region;
}
@Override
// TODO: Update to check cloud and system when everyone use methods that specify cloud and system
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
ZoneId zoneId = (ZoneId) o;
return environment == zoneId.environment &&
Objects.equals(region, zoneId.region);
}
@Override
public int hashCode() {
return Objects.hash(environment, region);
}
}
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