public static void AddPaginationHeaders <T>(this IHeaderDictionary headers, PagedListResponse <T> response) where T : class, IDto
{
headers.Add("Pagination-CurrentPage", response.CurrentPage.ToString());
headers.Add("Pagination-TotalPages", response.TotalPages.ToString());
headers.Add("Pagination-PageSize", response.PageSize.ToString());
headers.Add("Pagination-TotalCount", response.TotalCount.ToString());
}
public static async Task <FlushResult> RenderAsync(IHeaderDictionary headerDictionary, PipeWriter pipeWriter, ReadOnlyMemory <byte> utf8String)
{
headerDictionary.Add(_headerServer);
headerDictionary.Add(_headerContentType);
headerDictionary.Add(new KeyValuePair <string, StringValues>("Content-Length", utf8String.Length.ToString()));
return(await pipeWriter.WriteAsync(utf8String));
}
/// <summary>
/// Adds x-ms-retry-after-ms and Retry-After response headers. The former is used by Cosmos DB and is expressed in ms, the latter is the W3C standard header and expressed in
/// seconds. The seconds will be >= 1 unless the timespan is really 0.
/// </summary>
/// <param name="responseHeaders">The response headers</param>
/// <param name="retryAfterTimeSpan">The time</param>
public static void AddRetryAfterHeaders(this IHeaderDictionary responseHeaders, TimeSpan retryAfterTimeSpan)
{
responseHeaders.Add(
KnownHeaders.RetryAfterMilliseconds,
((int)retryAfterTimeSpan.TotalMilliseconds).ToString(CultureInfo.InvariantCulture));
int retryAfterSeconds = retryAfterTimeSpan == default ? 0 : Math.Max(1, (int)Math.Round(retryAfterTimeSpan.TotalSeconds));
responseHeaders.Add(
KnownHeaders.RetryAfter,
retryAfterSeconds.ToString(CultureInfo.InvariantCulture));
}
protected void AddToHeader(string header, string value, IHeaderDictionary headerList)
{
if (!headerList.ContainsKey(header))
{
headerList.Add(header, value);
}
}
public static void AddPaging(
this IHeaderDictionary header,
CollectionQueryParameters queryParameters,
int totalCount,
int maxPages = 500)
{
var skip = queryParameters.Skip ?? 0;
var pageSize = queryParameters.Top ?? maxPages;
int currentPage = (skip / pageSize) + 1;
int totalPages = totalCount > 0
? (int)Math.Ceiling(totalCount / (double)pageSize)
: 0;
var paginationHeader = new
{
currentPage,
pageSize,
totalCount,
totalPages
};
header.Add("X-Pagination", JsonConvert.SerializeObject(paginationHeader));
}
public static void AddHeaderIfNotInDict(this IHeaderDictionary headerDict, string key, string value)
{
if (!headerDict.ContainsKey(key))
{
headerDict.Add(key, value);
}
}
private static void SetHeaderIfNotAlreadyPresent(IHeaderDictionary headers, string headerName, string[] headerValues)
{
if (!headers.ContainsKey(headerName))
{
headers.Add(headerName, headerValues);
}
}