/**
* This file is part of CloudML [ http://cloudml.org ]
*
* Copyright (C) 2012 - SINTEF ICT
* Contact: Franck Chauvel <franck.chauvel@sintef.no>
*
* Module: root
*
* CloudML is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* CloudML is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with CloudML. If not, see
* <http://www.gnu.org/licenses/>.
*/
package org.cloudml.core;
import java.util.Collection;
import org.cloudml.core.util.OwnedBy;
import java.util.LinkedList;
import java.util.List;
import org.cloudml.core.collections.ComponentInstanceGroup;
import org.cloudml.core.collections.ProvidedExecutionPlatformGroup;
import org.cloudml.core.collections.ProvidedPortGroup;
import org.cloudml.core.validation.Report;
public abstract class Component extends WithResources implements DeploymentElement, OwnedBy<Deployment> {
private final OptionalOwner<Deployment> owner;
private final LocalProvidedPortGroup providedPorts;
private final LocalProvidedExecutionPlatformGroup providedExecutionPlatforms;
public Component(String name) {
this(name, new LinkedList<ProvidedPort>(), new LinkedList<ProvidedExecutionPlatform>());
}
public Component(String name, List<ProvidedPort> providedPorts, List<ProvidedExecutionPlatform> providedExecutionPlatforms) {
super(name);
this.owner = new OptionalOwner<Deployment>();
this.providedPorts = new LocalProvidedPortGroup(providedPorts);
this.providedExecutionPlatforms = new LocalProvidedExecutionPlatformGroup(providedExecutionPlatforms);
}
/**
* @return true if this component type has the given provided port, false otherwise
* @param port the port whose existence is to be asserted
*/
public boolean canProvide(ProvidedPort port) {
for (ProvidedPort eachPort: providedPorts) {
if (eachPort.equals(port)) {
return true;
}
}
return false;
}
public boolean canHost(InternalComponent component) {
return providedExecutionPlatforms.firstMatchFor(component) != null;
}
@Override
public void validate(Report report) {
if (owner.isUndefined()) {
final String error = String.format("Component '%s' has no owner", getQualifiedName());
report.addError(error);
}
}
/**
* @return true if this component provides at least one execution platform,
* false otherwise.
*/
public boolean isExecutionPlatform() {
return !providedExecutionPlatforms.isEmpty();
}
public boolean isUsed() {
return !instances().isEmpty();
}
public final ComponentInstanceGroup<ComponentInstance<? extends Component>> instances() {
if (owner.isUndefined()) {
return new ComponentInstanceGroup<ComponentInstance<? extends Component>>();
}
return getDeployment().getComponentInstances().ofType(getName());
}
public abstract boolean isInternal();
public final InternalComponent asInternal() {
if (isExternal()) {
throw new IllegalStateException("Cannot cast an external component into an internal one!");
}
return (InternalComponent) this;
}
public final boolean isExternal() {
return !isInternal();
}
public final ExternalComponent asExternal() {
if (isInternal()) {
throw new IllegalStateException("Cannot cast an internal component into an external one!");
}
return (ExternalComponent) this;
}
@Override
public final Deployment getDeployment() {
return getOwner().get();
}
@Override
public final OptionalOwner<Deployment> getOwner() {
return this.owner;
}
@Override
public String getQualifiedName() {
return owner.getName() + "::" + getName();
}
public ProvidedPortGroup getProvidedPorts() {
return this.providedPorts;
}
public ProvidedExecutionPlatformGroup getProvidedExecutionPlatforms() {
return this.providedExecutionPlatforms;
}
public void setProvidedExecutionPlatforms(List<ProvidedExecutionPlatform> providedExecutionPlatforms) {
this.providedExecutionPlatforms.clear();
this.providedExecutionPlatforms.addAll(providedExecutionPlatforms);
}
public void addProvidedExecutionPlatforms(ProvidedExecutionPlatform... platforms) {
for (ProvidedExecutionPlatform platform: platforms) {
unlessNewAndValidPlatform(platform);
this.providedExecutionPlatforms.add(platform);
}
}
private void unlessNewAndValidPlatform(ProvidedExecutionPlatform platform) {
if (platform == null) {
throw new IllegalArgumentException("The given provided executon platform is null");
}
if (platform.getName() == null) {
throw new IllegalArgumentException("Illegal platform without name!");
}
if (getProvidedExecutionPlatformByName(platform.getName()) != null) {
throw new IllegalArgumentException("Duplicated provided execution platform name: '" + platform.getName() + "'");
}
}
public ProvidedExecutionPlatform getProvidedExecutionPlatformByName(String name) {
for (ProvidedExecutionPlatform platform: providedExecutionPlatforms) {
if (platform.getName().equals(name)) {
return platform;
}
}
return null;
}
@Override
public boolean equals(Object that) {
if (that == null) {
return false;
}
if (that instanceof Component) {
Component other = (Component) that;
if (other.getOwner().isDefined() && getOwner().isDefined()) {
return other.getOwner().get().equals(getOwner().get()) && other.isNamed(getName());
}
}
return false;
}
@Override
public int hashCode() {
int hash = 5;
hash = 31 * hash + (this.owner.isDefined() ? this.owner.get().hashCode() : 0);
hash = 31 * hash + (this.providedPorts != null ? this.providedPorts.hashCode() : 0);
hash = 31 * hash + (this.providedExecutionPlatforms != null ? this.providedExecutionPlatforms.hashCode() : 0);
return hash;
}
private class LocalProvidedPortGroup extends ProvidedPortGroup {
public LocalProvidedPortGroup() {
}
public LocalProvidedPortGroup(Collection<ProvidedPort> content) {
super(content);
}
@Override
public boolean add(ProvidedPort e) {
e.getOwner().set(Component.this);
return super.add(e);
}
@Override
public boolean remove(Object o) {
if (o instanceof ProvidedPort) {
ProvidedPort port = (ProvidedPort) o;
port.getOwner().discard();
}
return super.remove(o);
}
@Override
public void clear() {
for (ProvidedPort port: this) {
port.getOwner().discard();
}
super.clear();
}
}
private class LocalProvidedExecutionPlatformGroup extends ProvidedExecutionPlatformGroup {
public LocalProvidedExecutionPlatformGroup() {
}
public LocalProvidedExecutionPlatformGroup(Collection<ProvidedExecutionPlatform> content) {
super(content);
}
@Override
public boolean add(ProvidedExecutionPlatform e) {
e.getOwner().set(Component.this);
return super.add(e);
}
@Override
public boolean remove(Object o) {
if (o instanceof ProvidedExecutionPlatform) {
ProvidedExecutionPlatform platform = (ProvidedExecutionPlatform) o;
platform.getOwner().discard();
}
return super.remove(o);
}
@Override
public void clear() {
for (ProvidedExecutionPlatform platform: this) {
platform.getOwner().discard();
}
super.clear();
}
}
}