src/main/java/org/takes/facets/auth/codecs/CcCompact.java
/*
* The MIT License (MIT)
*
* Copyright (c) 2014-2024 Yegor Bugayenko
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package org.takes.facets.auth.codecs;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import lombok.EqualsAndHashCode;
import org.takes.facets.auth.Identity;
/**
* Compact codec.
*
* <p>The class is immutable and thread-safe.
*
* @since 0.5
*/
@EqualsAndHashCode
public final class CcCompact implements Codec {
@Override
public byte[] encode(final Identity identity) {
final ByteArrayOutputStream data = new ByteArrayOutputStream();
try (DataOutputStream stream = new DataOutputStream(data)) {
stream.writeUTF(identity.urn());
for (final Map.Entry<String, String> ent
: identity.properties().entrySet()) {
stream.writeUTF(ent.getKey());
stream.writeUTF(ent.getValue());
}
} catch (final IOException ex) {
throw new IllegalArgumentException(
"Failed to encode the identity",
ex
);
}
return data.toByteArray();
}
@Override
public Identity decode(final byte[] bytes) {
final Map<String, String> map = new HashMap<>(0);
try (DataInputStream stream = new DataInputStream(
new ByteArrayInputStream(bytes)
)
) {
final String urn = stream.readUTF();
while (stream.available() > 0) {
map.put(stream.readUTF(), stream.readUTF());
}
return new Identity.Simple(urn, map);
} catch (final IOException ex) {
throw new DecodingException(ex);
}
}
}