com.hazelcast.jet.config.ResourceConfig Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2018, Hazelcast, Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.jet.config;
import javax.annotation.Nonnull;
import java.io.Serializable;
import java.net.URL;
import static com.hazelcast.util.Preconditions.checkNotNull;
import static com.hazelcast.util.Preconditions.checkTrue;
/**
* Describes a single resource to deploy to the Jet cluster.
*/
public class ResourceConfig implements Serializable {
private final URL url;
private final String id;
private final boolean isArchive;
/**
* Creates a resource config with the given properties.
*
* @param url url of the resource
* @param id id of the resource
* @param isArchive true, if this is an JAR archive with many entries
*/
ResourceConfig(@Nonnull URL url, String id, boolean isArchive) {
checkTrue(isArchive ^ id != null, "Either isArchive == true, or id != null, exclusively");
this.url = url;
this.id = id;
this.isArchive = isArchive;
}
/**
* Creates a config for a class to be deployed. Derives the config
* properties automatically.
*
* @param clazz the class to deploy
*/
ResourceConfig(Class clazz) {
id = clazz.getName().replace('.', '/') + ".class";
url = clazz.getClassLoader().getResource(id);
checkNotNull(this.url, "Couldn't derive URL from class " + clazz);
isArchive = false;
}
/**
* Returns the URL at which the resource will be available.
*/
public URL getUrl() {
return url;
}
/**
* The ID of the resource, null for {@link #isArchive() archives}.
*/
public String getId() {
return id;
}
/**
* Whether this entry is an Jar archive or a single resource element.
*/
public boolean isArchive() {
return isArchive;
}
@Override
public String toString() {
return "ResourceConfig{url=" + url + ", id='" + id + '\'' + ", isArchive=" + isArchive + '}';
}
}