/*
* Copyright 2013 Netflix, Inc.
*
* 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 autobind;
import com.google.common.collect.Lists;
import com.google.inject.Injector;
import com.google.inject.TypeLiteral;
import com.netflix.governator.annotations.AutoBind;
import com.netflix.governator.guice.AutoBindProvider;
import com.netflix.governator.guice.BootstrapBinder;
import com.netflix.governator.guice.BootstrapModule;
import com.netflix.governator.guice.LifecycleInjector;
import com.netflix.governator.lifecycle.LifecycleManager;
import java.util.List;
public class AutoBindExample
{
public static void main(String[] args) throws Exception
{
// This Governator feature tells the CLASSPATH scanner
// to ignore listed classes. So, even though ExampleService
// is annotated with @AutoBindSingleton it will not
// get created in this example
List<Class<?>> ignore = Lists.newArrayList();
ignore.add(ExampleService.class);
// Always get the Guice injector from Governator
Injector injector = LifecycleInjector
.builder()
.usingBasePackages("autobind")
.ignoringAutoBindClasses(ignore) // tell Governator's CLASSPATH scanner to ignore listed classes
.withBootstrapModule
(
new BootstrapModule()
{
@Override
public void configure(BootstrapBinder binder)
{
// bind an AutoBindProvider for @AutoBind annotated fields/arguments
TypeLiteral<AutoBindProvider<AutoBind>> typeLiteral = new TypeLiteral<AutoBindProvider<AutoBind>>(){};
binder.bind(typeLiteral).to(ExampleAutoBindProvider.class).asEagerSingleton();
}
}
)
.createInjector();
LifecycleManager manager = injector.getInstance(LifecycleManager.class);
// Always start the Lifecycle Manager
manager.start();
System.out.println(injector.getInstance(ExampleObjectA.class).getValue());
System.out.println(injector.getInstance(ExampleObjectB.class).getValue());
System.out.println(injector.getInstance(ExampleObjectC.class).getValue());
/*
Console will output:
letter A - 1
letter B - 2
letter C - 3
*/
// your app would execute here
// Always close the Lifecycle Manager at app end
manager.close();
}
}