50 lines
1.3 KiB
Java
50 lines
1.3 KiB
Java
package biz.nellemann.svci;
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import com.fasterxml.jackson.databind.util.StdConverter;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* Jackson Converter
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* Converts a "storage capacity" presented as a String with a unit (eg. MB) to a Double value in TB.
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*/
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public class CapacityToDoubleConverter extends StdConverter<String, Double> {
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private final static Logger log = LoggerFactory.getLogger(CapacityToDoubleConverter.class);
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final private Pattern p = Pattern.compile("(^\\d*\\.?\\d*)\\s?(\\D{2})$");
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@Override
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public Double convert(String value) {
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Matcher m = p.matcher(value);
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if(!m.matches()) {
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return null;
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}
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double input = Double.parseDouble(m.group(1));
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String unit = m.group(2);
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log.debug("Input: {} {}", input, unit);
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double output = input;
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if(unit.equals("PB")) {
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output = input * 1000;
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} else if(unit.equals("TB")) {
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output = input;
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} else if(unit.equals("GB")) {
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output = input / 1000;
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} else if(unit.equals("MB")) {
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output = input / 1_000_000;
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} else {
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log.warn("convert() - Unit {} not supported.", unit);
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}
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log.debug("Output: {} TB", output);
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return output;
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}
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}
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