public override async Task Read(
ReadReq request,
IServerStreamWriter <ReadResp> responseStream,
ServerCallContext context)
{
var options = request.Options;
var countOptionsCase = options.CountOptionCase;
var streamOptionsCase = options.StreamOptionCase;
var readDirection = options.ReadDirection;
var filterOptionsCase = options.FilterOptionCase;
var uuidOptionsCase = options.UuidOption.ContentCase;
var user = context.GetHttpContext().User;
var requiresLeader = GetRequiresLeader(context.RequestHeaders);
var op = streamOptionsCase switch {
StreamOptionOneofCase.Stream => ReadOperation.WithParameter(
Authorization.Operations.Streams.Parameters.StreamId(request.Options.Stream.StreamName)),
StreamOptionOneofCase.All => ReadOperation.WithParameter(
Authorization.Operations.Streams.Parameters.StreamId(SystemStreams.AllStream)),
_ => throw new InvalidOperationException()
};
if (!await _provider.CheckAccessAsync(user, op, context.CancellationToken).ConfigureAwait(false))
{
throw AccessDenied();
}
await using var enumerator =
(streamOptionsCase, countOptionsCase, readDirection, filterOptionsCase) switch {
(StreamOptionOneofCase.Stream,
CountOptionOneofCase.Count,
ReadDirection.Forwards,
FilterOptionOneofCase.NoFilter) => (IAsyncEnumerator <ResolvedEvent>)
new Enumerators.ReadStreamForwards(
_publisher,
request.Options.Stream.StreamName,
request.Options.Stream.ToStreamRevision(),
request.Options.Count,
request.Options.ResolveLinks,
user,
requiresLeader,
context.Deadline,
context.CancellationToken),
(StreamOptionOneofCase.Stream,
CountOptionOneofCase.Count,
ReadDirection.Backwards,
FilterOptionOneofCase.NoFilter) => new Enumerators.ReadStreamBackwards(
_publisher,
request.Options.Stream.StreamName,
request.Options.Stream.ToStreamRevision(),
request.Options.Count,
request.Options.ResolveLinks,
user,
requiresLeader,
context.Deadline,
context.CancellationToken),
(StreamOptionOneofCase.All,
CountOptionOneofCase.Count,
ReadDirection.Forwards,
FilterOptionOneofCase.NoFilter) => new Enumerators.ReadAllForwards(
_publisher,
request.Options.All.ToPosition(),
request.Options.Count,
request.Options.ResolveLinks,
user,
requiresLeader,
context.Deadline,
context.CancellationToken),
(StreamOptionOneofCase.All,
CountOptionOneofCase.Count,
ReadDirection.Backwards,
FilterOptionOneofCase.NoFilter) => new Enumerators.ReadAllBackwards(
_publisher,
request.Options.All.ToPosition(),
request.Options.Count,
request.Options.ResolveLinks,
user,
requiresLeader,
context.Deadline,
context.CancellationToken),
(StreamOptionOneofCase.Stream,
CountOptionOneofCase.Subscription,
ReadDirection.Forwards,
FilterOptionOneofCase.NoFilter) => new Enumerators.StreamSubscription(
_publisher,
request.Options.Stream.StreamName,
request.Options.Stream.ToSubscriptionStreamRevision(),
request.Options.ResolveLinks,
user,
requiresLeader,
_readIndex,
context.CancellationToken),
(StreamOptionOneofCase.All,
CountOptionOneofCase.Subscription,
ReadDirection.Forwards,
FilterOptionOneofCase.NoFilter) => new Enumerators.AllSubscription(
_publisher,
request.Options.All.ToSubscriptionPosition(),
request.Options.ResolveLinks,
user,
requiresLeader,
_readIndex,
context.CancellationToken),
(StreamOptionOneofCase.All,
CountOptionOneofCase.Subscription,
ReadDirection.Forwards,
FilterOptionOneofCase.Filter) => new Enumerators.AllSubscriptionFiltered(
_publisher,
request.Options.All.ToSubscriptionPosition(),
request.Options.ResolveLinks,
ConvertToEventFilter(request.Options.Filter),
user,
requiresLeader,
_readIndex,
request.Options.Filter.WindowCase switch {
ReadReq.Types.Options.Types.FilterOptions.WindowOneofCase.Count => null,
ReadReq.Types.Options.Types.FilterOptions.WindowOneofCase.Max => request.Options.Filter.Max,
_ => throw new InvalidOperationException()
},
public override async Task Read(
ReadReq request,
IServerStreamWriter <ReadResp> responseStream,
ServerCallContext context)
{
var options = request.Options;
var countOptionsCase = options.CountOptionCase;
var streamOptionsCase = options.StreamOptionCase;
var readDirection = options.ReadDirection;
var filterOptionsCase = options.FilterOptionCase;
var uuidOptionsCase = options.UuidOption.ContentCase;
var user = context.GetHttpContext().User;
await using var enumerator =
(streamOptionsCase, countOptionsCase, readDirection, filterOptionsCase) switch {
(StreamOptionOneofCase.Stream,
CountOptionOneofCase.Count,
ReadDirection.Forwards,
FilterOptionOneofCase.NoFilter) => (IAsyncEnumerator <ResolvedEvent>)
new Enumerators.ReadStreamForwards(
_queue,
request.Options.Stream.StreamName,
request.Options.Stream.ToStreamRevision(),
request.Options.Count,
request.Options.ResolveLinks,
user,
context.Deadline,
context.CancellationToken),
(StreamOptionOneofCase.Stream,
CountOptionOneofCase.Count,
ReadDirection.Backwards,
FilterOptionOneofCase.NoFilter) => new Enumerators.ReadStreamBackwards(
_queue,
request.Options.Stream.StreamName,
request.Options.Stream.ToStreamRevision(),
request.Options.Count,
request.Options.ResolveLinks,
user,
context.Deadline,
context.CancellationToken),
(StreamOptionOneofCase.All,
CountOptionOneofCase.Count,
ReadDirection.Forwards,
FilterOptionOneofCase.NoFilter) => new Enumerators.ReadAllForwards(
_queue,
request.Options.All.ToPosition(),
request.Options.Count,
request.Options.ResolveLinks,
user,
context.Deadline,
context.CancellationToken),
(StreamOptionOneofCase.All,
CountOptionOneofCase.Count,
ReadDirection.Forwards,
FilterOptionOneofCase.Filter) => new Enumerators.ReadAllForwardsFiltered(
_queue,
request.Options.All.ToPosition(),
request.Options.Count,
request.Options.ResolveLinks,
ConvertToEventFilter(request.Options.Filter),
request.Options.Filter.WindowCase switch {
ReadReq.Types.Options.Types.FilterOptions.WindowOneofCase.Count => null,
ReadReq.Types.Options.Types.FilterOptions.WindowOneofCase.Max => request.Options.Filter.Max,
_ => throw new InvalidOperationException()
},
