public ChangeFeedCrossFeedRangeAsyncEnumerator(
CrossPartitionChangeFeedAsyncEnumerator enumerator,
JsonSerializationFormatOptions jsonSerializationFormatOptions)
{
this.enumerator = enumerator ?? throw new ArgumentNullException(nameof(enumerator));
this.jsonSerializationFormatOptions = jsonSerializationFormatOptions;
}
public static CosmosArray ParseRestFeedResponse(
Stream stream,
ResourceType resourceType,
JsonSerializationFormatOptions jsonSerializationFormatOptions)
{
// Parse out the document from the REST response like this:
// {
// "_rid": "qHVdAImeKAQ=",
// "Documents": [{
// "id": "03230",
// "_rid": "qHVdAImeKAQBAAAAAAAAAA==",
// "_self": "dbs\/qHVdAA==\/colls\/qHVdAImeKAQ=\/docs\/qHVdAImeKAQBAAAAAAAAAA==\/",
// "_etag": "\"410000b0-0000-0000-0000-597916b00000\"",
// "_attachments": "attachments\/",
// "_ts": 1501107886
// }],
// "_count": 1
// }
// You want to create a CosmosElement for each document in "Documents".
ReadOnlyMemory <byte> content = StreamToBytes(stream);
IJsonNavigator jsonNavigator = CreateNavigatorFromContent(content, jsonSerializationFormatOptions);
string arrayKeyName = ResourceTypeToArrayKeyName(resourceType);
return(GetResourceArrayFromNavigator(jsonNavigator, arrayKeyName));
}
public ChangeFeedCrossFeedRangeAsyncEnumerable(
IDocumentContainer documentContainer,
ChangeFeedCrossFeedRangeState state,
ChangeFeedPaginationOptions changeFeedPaginationOptions,
JsonSerializationFormatOptions jsonSerializationFormatOptions = null)
{
this.documentContainer = documentContainer ?? throw new ArgumentNullException(nameof(documentContainer));
this.changeFeedPaginationOptions = changeFeedPaginationOptions ?? ChangeFeedPaginationOptions.Default;
this.state = state;
this.jsonSerializationFormatOptions = jsonSerializationFormatOptions;
}
public async Task TestContentSerializationOptions()
{
{
// Native format
IAsyncEnumerable <TryCatch <ChangeFeedPage> > asyncEnumerable = this.Container.GetChangeFeedAsyncEnumerable(
ChangeFeedCrossFeedRangeState.CreateFromBeginning(),
ChangeFeedMode.Incremental,
new ChangeFeedRequestOptions()
{
JsonSerializationFormatOptions = JsonSerializationFormatOptions.Create(JsonSerializationFormat.Binary)
});
await foreach (TryCatch <ChangeFeedPage> monadicPage in asyncEnumerable)
{
monadicPage.ThrowIfFailed();
if (monadicPage.Result.NotModified)
{
break;
}
}
}
{
// Custom format
IAsyncEnumerable <TryCatch <ChangeFeedPage> > asyncEnumerable = this.Container.GetChangeFeedAsyncEnumerable(
ChangeFeedCrossFeedRangeState.CreateFromBeginning(),
ChangeFeedMode.Incremental,
new ChangeFeedRequestOptions()
{
JsonSerializationFormatOptions = JsonSerializationFormatOptions.Create(
JsonSerializationFormat.Binary,
(content) => JsonNavigator.Create(content))
});
await foreach (TryCatch <ChangeFeedPage> monadicPage in asyncEnumerable)
{
monadicPage.ThrowIfFailed();
if (monadicPage.Result.NotModified)
{
break;
}
}
}
}
private static IJsonNavigator CreateNavigatorFromContent(ReadOnlyMemory <byte> content, JsonSerializationFormatOptions jsonSerializationFormatOptions)
{
IJsonNavigator jsonNavigator;
if (jsonSerializationFormatOptions != null)
{
if (jsonSerializationFormatOptions is JsonSerializationFormatOptions.CustomJsonSerializationFormatOptions customOptions)
{
jsonNavigator = customOptions.createNavigator(content);
if (jsonNavigator == null)
{
throw new InvalidOperationException("The CosmosSerializationOptions did not return a JSON navigator.");
}
}
else if (jsonSerializationFormatOptions is JsonSerializationFormatOptions.NativelySupportedJsonSerializationFormatOptions)
{
jsonNavigator = JsonNavigator.Create(content);
}
else
{
throw new ArgumentOutOfRangeException($"Unknown {nameof(JsonSerializationFormatOptions)} type: {jsonSerializationFormatOptions.GetType()}");
}
}
else
{
jsonNavigator = JsonNavigator.Create(content);
}
return(jsonNavigator);
}
public static CosmosArray ParseRestFeedResponse(
Stream stream,
JsonSerializationFormatOptions jsonSerializationFormatOptions)
{
return(ParseRestFeedResponse(stream, ResourceType.Document, jsonSerializationFormatOptions));
}
