private static BlockMetadata ReadBlockMetadata(ref Utf8JsonStreamReader reader)
{
ushort id = 0;
IList <DocumentMetadata> docs = Array.Empty <DocumentMetadata>();
JsonReaderHelper.ReadToken(ref reader, JsonTokenType.StartObject);
while (reader.Read() && reader.TokenType != JsonTokenType.EndObject)
{
var propertyName = reader.GetString();
switch (propertyName)
{
case BlockIdPropertyName:
id = ParseId(JsonReaderHelper.ReadString(ref reader).AsSpan());
break;
case DocumentMetadataListPropertyName:
docs = ReadDocumentsMetadata(ref reader);
break;
default:
throw new InvalidDataException($"Unexpected property at position {reader.Position}: {propertyName}");
}
}
return(new BlockMetadata(id, docs));
}
private static DocumentMetadata ReadDocumentMetadata(ref Utf8JsonStreamReader reader)
{
var id = DocumentId.Zero;
var title = string.Empty;
while (reader.Read() && reader.TokenType == JsonTokenType.PropertyName)
{
var propertyName = reader.GetString();
switch (propertyName)
{
case DocumentIdPropertyName:
id = DocumentId.Parse(JsonReaderHelper.ReadString(ref reader).AsSpan());
break;
case TitlePropertyName:
title = JsonReaderHelper.ReadString(ref reader);
break;
default:
throw new InvalidDataException($"Unexpected property at position {reader.Position}: {propertyName}");
}
}
return(new DocumentMetadata(id, title));
}
private static CorpusZipMetadata ReadCorpusMetadata(ref Utf8JsonStreamReader reader)
{
IReadOnlyList <DocumentId> firstDocumentIdInBlock = Array.Empty <DocumentId>();
H.ReadToken(ref reader, JsonTokenType.StartObject);
while (reader.Read() && reader.TokenType == JsonTokenType.PropertyName)
{
var propertyName = reader.GetString();
switch (propertyName)
{
case FirstDocumentIdInBlockPropertyName:
firstDocumentIdInBlock = ReadFirstDocumentIdInBlock(ref reader);
break;
default:
throw new InvalidDataException($"Unexpected property at position {reader.Position}: {propertyName}");
}
}
if (firstDocumentIdInBlock.Count == 0)
{
throw new InvalidDataException("Mandatory field ReadFirstDocumentIdInBlock was not found");
}
return(new CorpusZipMetadata(firstDocumentIdInBlock));
}
/// <summary>
/// Read the owner from the stream and consume to the end of the payload.
/// </summary>
/// <param name="streamReader">The reader from which to read the id.</param>
/// <returns>The ID read from the payload.</returns>
public static string ReadOwner(ref Utf8JsonStreamReader streamReader)
{
if (streamReader.TokenType != JsonTokenType.StartObject)
{
throw new JsonException("Expected to be at the start of the event payload.");
}
// Read the ID
streamReader.Read();
if (streamReader.TokenType != JsonTokenType.PropertyName || !streamReader.Match(OwnerPropertyString))
{
throw new JsonException($"Expected to find the {OwnerPropertyString}.");
}
streamReader.Read();
if (streamReader.TokenType != JsonTokenType.String)
{
throw new JsonException("Expected to find a string property.");
}
string owner = streamReader.GetString() ?? throw new JsonException("Expected to find an owner.");
// Read to the end of the object
streamReader.Read();
if (streamReader.TokenType != JsonTokenType.EndObject)
{
throw new JsonException("Expected to be at the end of the event payload.");
}
return(owner);
}
private static string ReadString(ref Utf8JsonStreamReader reader)
{
if (reader.Read() && reader.TokenType == JsonTokenType.String)
{
return(reader.GetString());
}
throw new WorkloadManifestFormatException(Strings.ExpectedStringAtOffset, reader.TokenStartIndex);
}
private static string?ReadStringLocalized(ref Utf8JsonStreamReader reader, LocalizationCatalog?localizationCatalog, string id)
{
ConsumeToken(ref reader, JsonTokenType.String);
return(localizationCatalog?.Localize(id) ?? reader.GetString());
}
private static string ReadString(ref Utf8JsonStreamReader reader)
{
ConsumeToken(ref reader, JsonTokenType.String);
return(reader.GetString());
}