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Trino - Legacy HDFS file system support

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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 io.trino.hdfs;

import com.google.inject.Binder;
import com.google.inject.Module;
import com.google.inject.Scopes;
import io.trino.hdfs.gcs.GcsStorageFactory;

import static com.google.inject.multibindings.Multibinder.newSetBinder;
import static com.google.inject.multibindings.OptionalBinder.newOptionalBinder;
import static io.airlift.configuration.ConfigBinder.configBinder;
import static org.weakref.jmx.guice.ExportBinder.newExporter;

public class HdfsModule
        implements Module
{
    @Override
    public void configure(Binder binder)
    {
        configBinder(binder).bindConfig(HdfsConfig.class);

        binder.bind(HdfsConfiguration.class).to(DynamicHdfsConfiguration.class).in(Scopes.SINGLETON);
        binder.bind(HdfsEnvironment.class).in(Scopes.SINGLETON);

        binder.bind(TrinoFileSystemCacheStats.class).toInstance(TrinoFileSystemCacheStats.instance());
        newExporter(binder).export(TrinoFileSystemCacheStats.class).withGeneratedName();

        binder.bind(HdfsConfigurationInitializer.class).in(Scopes.SINGLETON);
        newSetBinder(binder, ConfigurationInitializer.class);
        newSetBinder(binder, DynamicConfigurationProvider.class);

        newOptionalBinder(binder, GcsStorageFactory.class);
    }
}