blob: 4e8ead0bc4bec2b0fda7b4396c420965a8360e34 [file] [log] [blame]
/*
* 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.Internal.Extensions
{
using PulsarApi;
using System.Buffers;
public static class MessagePackageExtensions
{
public static uint GetMetadataSize(this MessagePackage package)
=> package.Data.ReadUInt32(Constants.MetadataSizeOffset, true);
public static MessageMetadata ExtractMetadata(this MessagePackage package, uint metadataSize)
=> Serializer.Deserialize<MessageMetadata>(package.Data.Slice(Constants.MetadataOffset, metadataSize));
public static ReadOnlySequence<byte> ExtractData(this MessagePackage package, uint metadataSize)
=> package.Data.Slice(Constants.MetadataOffset + metadataSize);
public static bool ValidateMagicNumberAndChecksum(this MessagePackage package)
=> StartsWithMagicNumber(package.Data) && HasValidChecksum(package.Data);
private static bool StartsWithMagicNumber(ReadOnlySequence<byte> input)
=> input.StartsWith(Constants.MagicNumber);
private static bool HasValidChecksum(ReadOnlySequence<byte> input)
=> input.ReadUInt32(Constants.MagicNumber.Length, true) == Crc32C.Calculate(input.Slice(Constants.MetadataSizeOffset));
}
}