/// <inheritdoc />
public async IAsyncEnumerable <ChangesFeedResponseResult <TSource> > GetContinuousChangesAsync(ChangesFeedOptions options, ChangesFeedFilter filter,
[EnumeratorCancellation] CancellationToken cancellationToken)
{
var infiniteTimeout = TimeSpan.FromMilliseconds(Timeout.Infinite);
IFlurlRequest request = NewRequest()
.WithTimeout(infiniteTimeout)
.AppendPathSegment("_changes")
.SetQueryParam("feed", "continuous");
if (options != null)
{
request = request.ApplyQueryParametersOptions(options);
}
await using Stream stream = filter == null
? await request.GetStreamAsync(cancellationToken, HttpCompletionOption.ResponseHeadersRead)
.ConfigureAwait(false)
: await request.QueryContinuousWithFilterAsync <TSource>(_queryProvider, filter, cancellationToken)
.ConfigureAwait(false);
await foreach (var line in stream.ReadLinesAsync(cancellationToken))
{
if (string.IsNullOrEmpty(line))
{
continue;
}
ChangesFeedResponseResult <TSource> result = JsonConvert.DeserializeObject <ChangesFeedResponseResult <TSource> >(line);
yield return(result);
}
}
/// <inheritdoc />
public async Task <IList <CouchDocumentInfo> > GetAsync(LocalDocumentsOptions?options = null,
CancellationToken cancellationToken = default)
{
IFlurlRequest request = NewRequest();
if (options != null)
{
request = request.ApplyQueryParametersOptions(options);
}
LocalDocumentsResult result = await request
.AppendPathSegments("_local_docs")
.GetJsonAsync <LocalDocumentsResult>(cancellationToken)
.SendRequestAsync()
.ConfigureAwait(false);
return(result.Rows);
}
/// <inheritdoc />
public async Task <IList <CouchDocumentInfo> > GetAsync(IReadOnlyCollection <string> keys,
LocalDocumentsOptions?options = null, CancellationToken cancellationToken = default)
{
IFlurlRequest request = NewRequest();
if (options != null)
{
request = request.ApplyQueryParametersOptions(options);
}
LocalDocumentsResult result = await request
.AppendPathSegments("_local_docs")
.PostJsonAsync(new { keys }, cancellationToken)
.SendRequestAsync()
.ReceiveJson <LocalDocumentsResult>()
.ConfigureAwait(false);
return(result.Rows);
}
/// <inheritdoc />
public async Task <ChangesFeedResponse <TSource> > GetChangesAsync(ChangesFeedOptions?options = null, ChangesFeedFilter?filter = null, CancellationToken cancellationToken = default)
{
IFlurlRequest request = NewRequest()
.AppendPathSegment("_changes");
if (options?.LongPoll == true)
{
_ = request.SetQueryParam("feed", "longpoll");
}
if (options != null)
{
request = request.ApplyQueryParametersOptions(options);
}
return(filter == null
? await request.GetJsonAsync <ChangesFeedResponse <TSource> >(cancellationToken)
.ConfigureAwait(false)
: await request.QueryWithFilterAsync <TSource>(_queryProvider, filter, cancellationToken)
.ConfigureAwait(false));
}
/// <inheritdoc />
public async IAsyncEnumerable <ChangesFeedResponseResult <TSource> > GetContinuousChangesAsync(ChangesFeedOptions?options, ChangesFeedFilter?filter,
[EnumeratorCancellation] CancellationToken cancellationToken)
{
var infiniteTimeout = TimeSpan.FromMilliseconds(Timeout.Infinite);
IFlurlRequest request = NewRequest()
.WithTimeout(infiniteTimeout)
.AppendPathSegment("_changes")
.SetQueryParam("feed", "continuous");
if (options != null)
{
request = request.ApplyQueryParametersOptions(options);
}
await using Stream stream = filter == null
? await request.GetStreamAsync(cancellationToken, HttpCompletionOption.ResponseHeadersRead)
.ConfigureAwait(false)
: await request.QueryContinuousWithFilterAsync <TSource>(_queryProvider, filter, cancellationToken)
.ConfigureAwait(false);
await foreach (var line in stream.ReadLinesAsync(cancellationToken))
{
if (string.IsNullOrEmpty(line))
{
continue;
}
MatchCollection matches = _feedChangeLineStartPattern.Matches(line);
for (var i = 0; i < matches.Count; i++)
{
var startIndex = matches[i].Index;
var endIndex = i < matches.Count - 1 ? matches[i + 1].Index : line.Length;
var lineLength = endIndex - startIndex;
var substring = line.Substring(startIndex, lineLength);
yield return(JsonConvert.DeserializeObject <ChangesFeedResponseResult <TSource> >(substring));
}
}
}