/*
* Druid - a distributed column store.
* Copyright (C) 2012, 2013 Metamarkets Group Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package io.druid.guice;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.introspect.AnnotationIntrospectorPair;
import com.fasterxml.jackson.databind.introspect.GuiceAnnotationIntrospector;
import com.fasterxml.jackson.databind.introspect.GuiceInjectableValues;
import com.google.inject.Binder;
import com.google.inject.Inject;
import com.google.inject.Injector;
import com.google.inject.Key;
import com.google.inject.Module;
import com.google.inject.Provides;
import io.druid.guice.annotations.Json;
import io.druid.guice.annotations.Smile;
import org.skife.config.ConfigurationObjectFactory;
import javax.validation.Validator;
import java.util.Properties;
/**
*/
public class DruidSecondaryModule implements Module
{
private final Properties properties;
private final ConfigurationObjectFactory factory;
private final ObjectMapper jsonMapper;
private final ObjectMapper smileMapper;
private final Validator validator;
private final JsonConfigurator jsonConfigurator;
@Inject
public DruidSecondaryModule(
Properties properties,
ConfigurationObjectFactory factory,
@Json ObjectMapper jsonMapper,
@Smile ObjectMapper smileMapper,
Validator validator,
JsonConfigurator jsonConfigurator
)
{
this.properties = properties;
this.factory = factory;
this.jsonMapper = jsonMapper;
this.smileMapper = smileMapper;
this.validator = validator;
this.jsonConfigurator = jsonConfigurator;
}
@Override
public void configure(Binder binder)
{
binder.install(new DruidGuiceExtensions());
binder.bind(Properties.class).toInstance(properties);
binder.bind(ConfigurationObjectFactory.class).toInstance(factory);
// make objectMapper eager to ensure jackson gets setup with guice injection for JsonConfigurator
binder.bind(ObjectMapper.class).to(Key.get(ObjectMapper.class, Json.class)).asEagerSingleton();
binder.bind(Validator.class).toInstance(validator);
binder.bind(JsonConfigurator.class).toInstance(jsonConfigurator);
}
@Provides @LazySingleton @Json
public ObjectMapper getJsonMapper(final Injector injector)
{
setupJackson(injector, jsonMapper);
return jsonMapper;
}
@Provides @LazySingleton @Smile
public ObjectMapper getSmileMapper(Injector injector)
{
setupJackson(injector, smileMapper);
return smileMapper;
}
private void setupJackson(Injector injector, final ObjectMapper mapper) {
final GuiceAnnotationIntrospector guiceIntrospector = new GuiceAnnotationIntrospector();
mapper.setInjectableValues(new GuiceInjectableValues(injector));
mapper.setAnnotationIntrospectors(
new AnnotationIntrospectorPair(
guiceIntrospector, mapper.getSerializationConfig().getAnnotationIntrospector()
),
new AnnotationIntrospectorPair(
guiceIntrospector, mapper.getDeserializationConfig().getAnnotationIntrospector()
)
);
}
}