/**
* Copyright 2005-2014 Red Hat, Inc.
*
* Red Hat licenses this file to you 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 io.fabric8.service;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.Map;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Properties;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.Service;
import io.fabric8.api.Container;
import io.fabric8.api.FabricService;
import io.fabric8.api.Profile;
import io.fabric8.api.jcip.ThreadSafe;
import io.fabric8.api.scr.Validatable;
import io.fabric8.api.scr.ValidatingReference;
import io.fabric8.api.scr.ValidationSupport;
import org.jboss.gravia.utils.IllegalStateAssertion;
import org.osgi.service.url.AbstractURLStreamHandlerService;
import org.osgi.service.url.URLStreamHandlerService;
@ThreadSafe
@Component(name = "io.fabric8.profile.urlhandler", label = "Fabric8 Profile URL Handler", immediate = true, metatype = false)
@Service(URLStreamHandlerService.class)
@Properties({
@Property(name = "url.handler.protocol", value = "profile")
})
public final class ProfileUrlHandler extends AbstractURLStreamHandlerService implements Validatable {
private static final String SYNTAX = "profile:<resource name>";
@Reference(referenceInterface = FabricService.class)
private final ValidatingReference<FabricService> fabricService = new ValidatingReference<FabricService>();
private final ValidationSupport active = new ValidationSupport();
@Activate
void activate() {
active.setValid();
}
@Deactivate
void deactivate() {
active.setInvalid();;
}
@Override
public boolean isValid() {
return active.isValid();
}
@Override
public void assertValid() {
active.assertValid();
}
@Override
public URLConnection openConnection(URL url) throws IOException {
assertValid();
return new Connection(url);
}
private class Connection extends URLConnection {
public Connection(URL url) throws MalformedURLException {
super(url);
if (url.getPath() == null || url.getPath().trim().length() == 0) {
throw new MalformedURLException("Path can not be null or empty. Syntax: " + SYNTAX);
}
if ((url.getHost() != null && url.getHost().length() > 0) || url.getPort() != -1) {
throw new MalformedURLException("Unsupported host/port in profile url");
}
if (url.getQuery() != null && url.getQuery().length() > 0) {
throw new MalformedURLException("Unsupported query in profile url");
}
}
@Override
public void connect() throws IOException {
assertValid();
}
@Override
public InputStream getInputStream() throws IOException {
assertValid();
String path = url.getPath();
Container container = fabricService.get().getCurrentContainer();
Profile overlayProfile = container.getOverlayProfile();
byte[] bytes = overlayProfile.getFileConfiguration(path);
IllegalStateAssertion.assertNotNull(bytes, "Resource " + path + " does not exist in the profile overlay.");
return new ByteArrayInputStream(bytes);
}
}
void bindFabricService(FabricService fabricService) {
this.fabricService.bind(fabricService);
}
void unbindFabricService(FabricService fabricService) {
this.fabricService.unbind(fabricService);
}
}