/*
* Copyright (c) 2014, Francis Galiegue (fgaliegue@gmail.com)
*
* This software is dual-licensed under:
*
* - the Lesser General Public License (LGPL) version 3.0 or, at your option, any
* later version;
* - the Apache Software License (ASL) version 2.0.
*
* The text of this file and of both licenses is available at the root of this
* project or, if you have the jar distribution, in directory META-INF/, under
* the names LGPL-3.0.txt and ASL-2.0.txt respectively.
*
* Direct link to the sources:
*
* - LGPL 3.0: https://www.gnu.org/licenses/lgpl-3.0.txt
* - ASL 2.0: http://www.apache.org/licenses/LICENSE-2.0.txt
*/
package com.github.fge.jsonschema.format.draftv3;
import com.fasterxml.jackson.databind.JsonNode;
import com.github.fge.jackson.NodeType;
import com.github.fge.jsonschema.core.exceptions.ProcessingException;
import com.github.fge.jsonschema.core.report.ProcessingReport;
import com.github.fge.jsonschema.format.AbstractFormatAttribute;
import com.github.fge.jsonschema.format.FormatAttribute;
import com.github.fge.jsonschema.processors.data.FullData;
import com.github.fge.msgsimple.bundle.MessageBundle;
import java.math.BigInteger;
/**
* Validator for the {@code utc-millisec} format attribute.
*
* <p>Note that there is no restriction on the number value at all. However,
* this attributes perform extra checks and <b>warns</b> (ie, does not report
* an error) in the following situations:</p>
*
* <ul>
* <li>the number is negative;</li>
* <li>the number, divided by 1000, is greater than 2^31 - 1.</li>
* </ul>
*/
public final class UTCMillisecAttribute
extends AbstractFormatAttribute
{
/**
* The maximum bit length of a Unix timestamp value
*/
private static final int EPOCH_BITLENGTH = 31;
/**
* 1000 as a {@link BigInteger}
*/
private static final BigInteger ONE_THOUSAND = new BigInteger("1000");
private static final FormatAttribute INSTANCE = new UTCMillisecAttribute();
public static FormatAttribute getInstance()
{
return INSTANCE;
}
private UTCMillisecAttribute()
{
super("utc-millisec", NodeType.INTEGER, NodeType.NUMBER);
}
@Override
public void validate(final ProcessingReport report,
final MessageBundle bundle, final FullData data)
throws ProcessingException
{
final JsonNode instance = data.getInstance().getNode();
BigInteger epoch = instance.bigIntegerValue();
if (epoch.signum() == -1) {
report.warn(newMsg(data, bundle, "warn.format.epoch.negative")
.putArgument("value", instance));
return;
}
epoch = epoch.divide(ONE_THOUSAND);
if (epoch.bitLength() > EPOCH_BITLENGTH)
report.warn(newMsg(data, bundle, "warn.format.epoch.overflow")
.putArgument("value", instance));
}
}