com.github.petruki.switcher.client.utils.SnapshotLoader Maven / Gradle / Ivy

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Switcher Client for working with Switcher API

There is a newer version: 1.0.6

package com.github.petruki.switcher.client.utils;

import java.io.FileNotFoundException;
import java.io.FileReader;

import org.apache.log4j.Logger;

import com.github.petruki.switcher.client.domain.criteria.Criteria;
import com.github.petruki.switcher.client.domain.criteria.Domain;
import com.github.petruki.switcher.client.exception.SwitcherSnapshotLoadException;
import com.google.gson.Gson;
import com.google.gson.JsonIOException;
import com.google.gson.JsonSyntaxException;

/**
 * @author rogerio
 * @since 2019-12-24
 */
public class SnapshotLoader {
	
	private static final Logger logger = Logger.getLogger(SnapshotLoader.class);

	public static Domain loadSnapshot(final String snapshotLocation) throws SwitcherSnapshotLoadException {
		
		final Gson gson = new Gson();

		try {
			final Data data = gson.fromJson(new FileReader(snapshotLocation), Data.class);
			return data.getDomain();
		} catch (JsonSyntaxException | JsonIOException | FileNotFoundException e) {
			logger.error(e);
			throw new SwitcherSnapshotLoadException(snapshotLocation, e);
		}
	}
	
	class Data {
		
		private Criteria data;
		
		public Domain getDomain() {
			return data.getDomain();
		}
		
	}

}