/*
* Copyright 2013 the original author or authors.
*
* 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 ratpack.remote.internal;
import io.remotecontrol.groovy.ContentType;
import io.remotecontrol.server.Receiver;
import ratpack.handling.Context;
import ratpack.handling.Handler;
import ratpack.registry.Registries;
import ratpack.registry.Registry;
import ratpack.registry.RegistryBuilder;
import java.io.ByteArrayOutputStream;
import java.util.concurrent.atomic.AtomicReference;
import static ratpack.handling.Handlers.*;
public class RemoteControlHandler implements Handler {
private final Registry registry;
private final Handler rest;
private final AtomicReference<Registry> registryReference = new AtomicReference<>();
private final Handler handler;
public RemoteControlHandler(String endpointPath, Registry registry, Handler rest) {
this.registry = registry;
this.rest = rest;
this.handler = chain(
path(
endpointPath,
chain(
post(),
contentTypes(ContentType.COMMAND.getValue()),
accepts(ContentType.RESULT.getValue()),
new CommandHandler()
)
),
new InsertHandler()
);
}
private class InsertHandler implements Handler {
@Override
public void handle(Context context) throws Exception {
Registry registryInjection = registryReference.get();
if (registryInjection == null) {
rest.handle(context);
} else {
context.insert(registryInjection, rest);
}
}
}
private class CommandHandler implements Handler {
@Override
public void handle(Context context) throws Exception {
final Registry commandRegistry = context.join(registry);
final RegistryBuilder registryBuilder = Registries.registry();
Receiver receiver = new RatpackReceiver(chain -> new DelegatingCommandDelegate(registryBuilder, commandRegistry) {
@Override
public void clearRegistry() {
registryReference.set(null);
}
});
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
receiver.execute(context.getRequest().getBody().getInputStream(), outputStream);
if (registryBuilder.size() > 0) {
Registry newRegistry = registryBuilder.build();
registryReference.set(newRegistry);
}
context.getResponse().send(ContentType.RESULT.getValue(), outputStream.toByteArray());
}
}
@Override
public void handle(final Context context) throws Exception {
handler.handle(context);
}
}