public override StreamMetadata Read(ref Utf8JsonReader reader, Type typeToConvert,
JsonSerializerOptions options)
{
int? maxCount = null;
TimeSpan? maxAge = null, cacheControl = null;
StreamRevision?truncateBefore = null;
StreamAcl acl = null;
using var stream = new MemoryStream();
using var customMetadataWriter = new Utf8JsonWriter(stream);
if (reader.TokenType != JsonTokenType.StartObject)
{
throw new InvalidOperationException();
}
customMetadataWriter.WriteStartObject();
while (reader.Read())
{
if (reader.TokenType == JsonTokenType.EndObject)
{
break;
}
if (reader.TokenType != JsonTokenType.PropertyName)
{
throw new InvalidOperationException();
}
switch (reader.GetString())
{
case SystemMetadata.MaxCount:
if (!reader.Read())
{
throw new InvalidOperationException();
}
maxCount = reader.GetInt32();
break;
case SystemMetadata.MaxAge:
if (!reader.Read())
{
throw new InvalidOperationException();
}
var int64 = reader.GetInt64();
maxAge = TimeSpan.FromSeconds(int64);
break;
case SystemMetadata.CacheControl:
if (!reader.Read())
{
throw new InvalidOperationException();
}
cacheControl = TimeSpan.FromSeconds(reader.GetInt64());
break;
case SystemMetadata.TruncateBefore:
if (!reader.Read())
{
throw new InvalidOperationException();
}
var value = reader.GetInt64();
truncateBefore = value == long.MaxValue
? StreamRevision.End
: StreamRevision.FromInt64(value);
break;
case SystemMetadata.Acl:
if (!reader.Read())
{
throw new InvalidOperationException();
}
acl = StreamAclJsonConverter.Instance.Read(ref reader, typeof(StreamAcl), options);
break;
default:
customMetadataWriter.WritePropertyName(reader.GetString());
reader.Read();
switch (reader.TokenType)
{
case JsonTokenType.Comment:
customMetadataWriter.WriteCommentValue(reader.GetComment());
break;
case JsonTokenType.String:
customMetadataWriter.WriteStringValue(reader.GetString());
break;
case JsonTokenType.Number:
customMetadataWriter.WriteNumberValue(reader.GetDouble());
break;
case JsonTokenType.True:
case JsonTokenType.False:
customMetadataWriter.WriteBooleanValue(reader.GetBoolean());
break;
case JsonTokenType.Null:
reader.Read();
customMetadataWriter.WriteNullValue();
break;
default:
throw new ArgumentOutOfRangeException();
}
break;
}
}
customMetadataWriter.WriteEndObject();
customMetadataWriter.Flush();
stream.Position = 0;
return(new StreamMetadata(maxCount, maxAge, truncateBefore, cacheControl, acl,
JsonDocument.Parse(stream)));
}
public void FromInt64ExpectedResult(long value, StreamRevision expected) => Assert.Equal(expected, StreamRevision.FromInt64(value));