NodeTtlFetcherManagerModule.java

/*
 * 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.ttl.nodettlfetchermanagers;

import com.facebook.airlift.configuration.AbstractConfigurationAwareModule;
import com.google.inject.Binder;
import com.google.inject.Scopes;

import static com.facebook.airlift.configuration.ConfigBinder.configBinder;
import static org.weakref.jmx.guice.ExportBinder.newExporter;

public class NodeTtlFetcherManagerModule
        extends AbstractConfigurationAwareModule
{
    @Override
    protected void setup(Binder binder)
    {
        NodeTtlFetcherManagerConfig config = buildConfigObject(NodeTtlFetcherManagerConfig.class);
        configBinder(binder).bindConfig(NodeTtlFetcherManagerConfig.class);
        switch (config.getNodeTtlFetcherManagerType()) {
            case THROWING:
                binder.bind(NodeTtlFetcherManager.class).to(ThrowingNodeTtlFetcherManager.class).in(Scopes.SINGLETON);
                break;
            case CONFIDENCE:
                binder.bind(NodeTtlFetcherManager.class).to(ConfidenceBasedNodeTtlFetcherManager.class).in(Scopes.SINGLETON);
                break;
            default:
                throw new UnsupportedOperationException("Unknown Node Ttl Fetcher Manager: " + config.getNodeTtlFetcherManagerType());
        }
        newExporter(binder).export(NodeTtlFetcherManager.class).withGeneratedName();
    }
}