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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.controller.api.role;
import com.yahoo.config.provision.ApplicationName;
import com.yahoo.config.provision.InstanceName;
import com.yahoo.config.provision.TenantName;
import java.util.Objects;
import java.util.Optional;
/**
* The context in which a role is valid. This is immutable.
*
* @author mpolden
*/
class Context {
private final Optional<TenantName> tenant;
private final Optional<ApplicationName> application;
private final Optional<InstanceName> instance;
private Context(Optional<TenantName> tenant, Optional<ApplicationName> application, Optional<InstanceName> instance) {
this.tenant = Objects.requireNonNull(tenant, "tenant must be non-null");
this.application = Objects.requireNonNull(application, "application must be non-null");
this.instance = Objects.requireNonNull(instance, "instance must be non-null");
}
/** A specific tenant this is valid for, if any */
Optional<TenantName> tenant() {
return tenant;
}
/** A specific application this is valid for, if any */
Optional<ApplicationName> application() {
return application;
}
/** A specific instance this is valid for, if any */
Optional<InstanceName> instance() {
return instance;
}
/** Returns a context that has no restrictions on tenant or application */
static Context unlimited() {
return new Context(Optional.empty(), Optional.empty(), Optional.empty());
}
/** Returns a context that is limited to given tenant */
static Context limitedTo(TenantName tenant) {
return new Context(Optional.of(tenant), Optional.empty(), Optional.empty());
}
/** Returns a context that is limited to given tenant and application */
static Context limitedTo(TenantName tenant, ApplicationName application) {
return new Context(Optional.of(tenant), Optional.of(application), Optional.empty());
}
/** Returns a context that is limited to given tenant, application, and instance */
static Context limitedTo(TenantName tenant, ApplicationName application, InstanceName instance) {
return new Context(Optional.of(tenant), Optional.of(application), Optional.of(instance));
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Context context = (Context) o;
return tenant.equals(context.tenant) &&
application.equals(context.application) &&
instance.equals(context.instance);
}
@Override
public int hashCode() {
return Objects.hash(tenant, application, instance);
}
@Override
public String toString() {
return "tenant " + tenant.map(TenantName::value).orElse("[none]") + ", "
+ "application " + application.map(ApplicationName::value).orElse("[none]") + ", "
+ "instance " + instance.map(InstanceName::value).orElse("[none]");
}
}
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