public async Task <StreamMetadataResult> GetStreamMetadata(
string streamId,
CancellationToken cancellationToken = default)
{
var client = CreateClient(new Resource
{
Links =
{
new Link
{
Href = LinkFormatter.Stream(streamId)
}
}
});
client = await client.GetAsync(client.Current.First(), null);
if (client.StatusCode != HttpStatusCode.NotFound)
{
ThrowOnError(client);
}
client = await client.GetAsync(client.Current.First(), Constants.Relations.Metadata);
var resource = client.Current.First();
return(resource.Data <HalStreamMetadataResult>());
}
public async Task DeleteStream(
StreamId streamId,
int expectedVersion = ExpectedVersion.Any,
CancellationToken cancellationToken = default)
{
Ensure.That(expectedVersion, nameof(expectedVersion)).IsGte(ExpectedVersion.Any);
GuardAgainstDisposed();
var client = CreateClient(new Resource
{
Links =
{
new Link
{
Href = LinkFormatter.Stream(streamId),
Rel = Constants.Relations.DeleteStream
}
}
});
client = await client.Delete(
Constants.Relations.DeleteStream,
null,
null,
new Dictionary <string, string[]>
{
[Constants.Headers.ExpectedVersion] = new[] { $"{expectedVersion}" }
},
cancellationToken);
ThrowOnError(client);
}
public async Task DeleteStream(
StreamId streamId,
int expectedVersion = ExpectedVersion.Any,
CancellationToken cancellationToken = default)
{
var client = CreateClient(new Resource
{
Links =
{
new Link
{
Href = LinkFormatter.Stream(streamId),
Rel = Constants.Relations.AppendToStream
}
}
});
client = await client.Delete(
Constants.Relations.AppendToStream,
null,
null,
new Dictionary <string, string[]>
{
[Constants.Headers.ExpectedVersion] = new[] { $"{expectedVersion}" }
},
cancellationToken);
ThrowOnError(client);
}
public async Task <AppendResult> AppendToStream(
StreamId streamId,
int expectedVersion,
NewStreamMessage[] messages,
CancellationToken cancellationToken = default)
{
var client = CreateClient(new Resource
{
Links =
{
new Link
{
Href = LinkFormatter.Stream(streamId),
Rel = Constants.Relations.AppendToStream
}
}
});
client = await client.Post(
Constants.Relations.AppendToStream,
messages,
null,
null,
new Dictionary <string, string[]>
{
[Constants.Headers.ExpectedVersion] = new[] { $"{expectedVersion}" }
},
cancellationToken);
ThrowOnError(client);
var resource = client.Current.First();
return(resource.Data <HalAppendResult>());
}
public async Task SetStreamMetadata(
StreamId streamId,
int expectedStreamMetadataVersion = ExpectedVersion.Any,
int?maxAge = null,
int?maxCount = null,
string metadataJson = null,
CancellationToken cancellationToken = default)
{
GuardAgainstDisposed();
var client = CreateClient(new Resource
{
Links =
{
new Link
{
Href = LinkFormatter.Stream(streamId)
}
}
});
client = await client.GetAsync(client.Current.First(), null);
if (client.StatusCode != HttpStatusCode.NotFound)
{
ThrowOnError(client);
}
client = await client.GetAsync(client.Current.First(), Constants.Relations.Metadata);
if (client.StatusCode != HttpStatusCode.NotFound)
{
ThrowOnError(client);
}
var metadata = new Dictionary <string, object>
{
["maxAge"] = maxAge,
["maxCount"] = maxCount
};
if (!string.IsNullOrEmpty(metadataJson))
{
metadata["metadataJson"] = TryParseMetadataJson(metadataJson);
}
client = await client.Post(
Constants.Relations.Self,
metadata,
null,
null,
new Dictionary <string, string[]>
{
[Constants.Headers.ExpectedVersion] = new[] { $"{expectedStreamMetadataVersion}" }
},
cancellationToken);
ThrowOnError(client);
}