com.mapr.data.sputnik.config.JSONConfigReader.java Source code

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Here is the source code for com.mapr.data.sputnik.config.JSONConfigReader.java

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package com.mapr.data.sputnik.config;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

/**
 *
 * 
 */
public class JSONConfigReader {
    private static final Logger log = LogManager.getLogger(JSONConfigReader.class);

    public static String getJsonConfig(Object o) {
        ObjectMapper mapper = new ObjectMapper();
        String json = null;
        try {
            json = mapper.writeValueAsString(o);
        } catch (JsonProcessingException ex) {
            log.warn("Error parsing object into json", ex);
        }
        return json;
    }

    public static <T> T readConfig(File input, Class<T> targetClass) throws IOException {
        return readConfig(new FileInputStream(input), targetClass);
    }

    public static <T> T readConfig(InputStream input, Class<T> targetClass) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        return mapper.readValue(input, targetClass);
    }
}