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/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace DotPulsar.Schemas
{
using DotPulsar.Abstractions;
using DotPulsar.Exceptions;
using System;
using System.Buffers;
using System.Collections.Immutable;
using System.Linq;
using System.Runtime.InteropServices;
/// <summary>
/// Schema definition for Integer (int32) messages.
/// </summary>
public sealed class IntegerSchema : ISchema<int>
{
public IntegerSchema()
=> SchemaInfo = new SchemaInfo("INT32", Array.Empty<byte>(), SchemaType.Int32, ImmutableDictionary<string, string>.Empty);
public SchemaInfo SchemaInfo { get; }
public int Decode(ReadOnlySequence<byte> bytes, byte[]? schemaVersion = null)
{
if (bytes.Length != 4)
throw new SchemaSerializationException($"{nameof(IntegerSchema)} expected to decode 4 bytes, but received {bytes} bytes");
var array = bytes.ToArray();
if (BitConverter.IsLittleEndian)
Array.Reverse(array);
return MemoryMarshal.Read<int>(array);
}
public ReadOnlySequence<byte> Encode(int message)
{
var array = BitConverter.GetBytes(message);
if (BitConverter.IsLittleEndian)
Array.Reverse(array);
return new(array);
}
}
}