net.meku.chameleon.persist.FilePersistResolver Maven / Gradle / Ivy

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A light-weight library to manage the configurations

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package net.meku.chameleon.persist;

import net.meku.chameleon.core.Configable;
import net.meku.chameleon.spi.ConfigPersistResolver;
import net.meku.chameleon.util.ChameleonUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;

import java.io.IOException;
import java.util.List;
import java.util.Map;

/**
 * A resolver to persist configurations to a json file.
 */
public class FilePersistResolver implements ConfigPersistResolver {

    private static final Log LOGGER = LogFactory.getLog(JsonFileHandler.class);

    @Autowired
    private JsonFileHandler jsonFileHandler;

    @Override
    public List load() {
        Map map = jsonFileHandler.read();
        return ChameleonUtils.fromMap(map);
    }

    @Override
    public Configable save(Configable configable) {
        try {
            jsonFileHandler.write(configable.getKey(), configable.getValue());
        } catch (IOException e) {
            LOGGER.error("Failed to save config" + configable.getKey(), e);
        }
        return configable;
    }
}