/// <summary>
/// 获取 HTTP 内容。
/// </summary>
/// <param name="endpointOptions">给定的 <see cref="HttpEndpointOptions"/>。</param>
/// <returns>返回 <see cref="HttpContent"/>。</returns>
protected virtual HttpContent?GetHttpContent(HttpEndpointOptions endpointOptions)
{
var parameters = endpointOptions.GetParameters();
if (parameters is null)
{
return(null);
}
switch (endpointOptions.ContentType)
{
case HttpClientContentTypes.FormUrlEncoded:
{
_logger.LogInformation($"Use 'application/x-www-form-urlencoded' content type: {endpointOptions.Parameters}");
return(new FormUrlEncodedContent(parameters));
}
case HttpClientContentTypes.MultipartFormData:
{
_logger.LogInformation($"Use 'multipart/form-data' content type: {endpointOptions.Parameters}");
var content = new MultipartFormDataContent();
foreach (var pair in parameters)
{
if (File.Exists(pair.Value))
{
_logger.LogInformation($"Add file: {pair.Key}={pair.Value}");
content.Add(new StreamContent(File.Open(pair.Value, FileMode.Open)), pair.Key, pair.Value);
}
else
{
_logger.LogInformation($"Add name: {pair.Key}={pair.Value}");
content.Add(new StringContent(pair.Value, Encoding), pair.Key);
}
}
return(content);
}
case HttpClientContentTypes.Json:
{
_logger.LogInformation($"Use 'application/json' content type: {endpointOptions.Parameters}");
var json = JsonSerializer.Serialize(parameters);
return(new StringContent(json, Encoding));
}
case HttpClientContentTypes.Stream:
{
_logger.LogInformation($"Use 'binary' content type: {endpointOptions.Parameters}");
return(new ByteArrayContent(endpointOptions.Parameters !.FromBase64String()));
}
default:
goto case HttpClientContentTypes.Json;
}
}
/// <summary>
/// 异步获取 HTTP 响应消息。
/// </summary>
/// <param name="client">给定的 <see cref="HttpClient"/>。</param>
/// <param name="uri">给定的 <see cref="Uri"/> 请求。</param>
/// <param name="endpointOptions">给定的 <see cref="HttpEndpointOptions"/>。</param>
/// <param name="cancellationToken">给定的 <see cref="CancellationToken"/>。</param>
/// <returns>返回包含 <see cref="HttpRequestMessage"/> 的异步操作。</returns>
protected virtual Task <HttpResponseMessage> GetHttpResponseMessageAsync(HttpClient client, Uri uri,
HttpEndpointOptions endpointOptions, CancellationToken cancellationToken)
{
Task <HttpResponseMessage> response;
switch (endpointOptions.Method)
{
case HttpClientMethods.Get:
{
_logger.LogInformation($"Starting get the endpoint request: {uri}");
response = client.GetAsync(uri, cancellationToken);
}
break;
case HttpClientMethods.Delete:
{
_logger.LogInformation($"Starting delete the endpoint request: {uri}");
response = client.DeleteAsync(uri, cancellationToken);
}
break;
case HttpClientMethods.Post:
{
_logger.LogInformation($"Starting post the endpoint request: {uri}");
response = client.PostAsync(uri, GetHttpContent(endpointOptions), cancellationToken);
}
break;
case HttpClientMethods.Put:
{
_logger.LogInformation($"Starting post the endpoint request: {uri}");
response = client.PutAsync(uri, GetHttpContent(endpointOptions), cancellationToken);
}
break;
case HttpClientMethods.Patch:
{
_logger.LogInformation($"Starting post the endpoint request: {uri}");
response = client.PatchAsync(uri, GetHttpContent(endpointOptions), cancellationToken);
}
break;
default:
goto case HttpClientMethods.Get;
}
if (!string.IsNullOrEmpty(endpointOptions.WaitTimeout))
{
_logger.LogInformation($"Set wait timeout: {endpointOptions.WaitTimeout}");
response = response.WaitAsync(TimeSpan.Parse(endpointOptions.WaitTimeout), cancellationToken);
}
return(response);
}
