/
BackupModule.java
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/
BackupModule.java
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/*
* 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 com.facebook.presto.raptor.backup;
import com.facebook.presto.raptor.RaptorConnectorId;
import com.google.common.collect.ImmutableMap;
import com.google.inject.Binder;
import com.google.inject.Module;
import com.google.inject.Provides;
import com.google.inject.Scopes;
import com.google.inject.util.Providers;
import io.airlift.bootstrap.LifeCycleManager;
import io.airlift.configuration.AbstractConfigurationAwareModule;
import javax.annotation.Nullable;
import javax.inject.Singleton;
import java.util.Map;
import java.util.Optional;
import static io.airlift.configuration.ConfigBinder.configBinder;
public class BackupModule
extends AbstractConfigurationAwareModule
{
private final Map<String, Module> providers;
public BackupModule(Map<String, Module> providers)
{
this.providers = ImmutableMap.<String, Module>builder()
.put("file", new FileBackupModule())
.putAll(providers)
.build();
}
@Override
protected void setup(Binder binder)
{
configBinder(binder).bindConfig(BackupConfig.class);
String provider = buildConfigObject(BackupConfig.class).getProvider();
if (provider == null) {
binder.bind(BackupStore.class).toProvider(Providers.of(null));
}
else {
Module module = providers.get(provider);
if (module == null) {
binder.addError("Unknown backup provider: %s", provider);
}
else {
binder.install(module);
}
}
binder.bind(BackupService.class).to(BackupServiceManager.class).in(Scopes.SINGLETON);
}
@Provides
@Singleton
private static Optional<BackupStore> createBackupStore(
@Nullable BackupStore store,
LifeCycleManager lifeCycleManager,
RaptorConnectorId connectorId,
BackupConfig config)
throws Exception
{
if (store == null) {
return Optional.empty();
}
BackupStore proxy = new TimeoutBackupStore(store, connectorId.toString(), config.getTimeout());
lifeCycleManager.addInstance(proxy);
return Optional.of(proxy);
}
}