101 lines
3.5 KiB
C#
101 lines
3.5 KiB
C#
namespace ASC.Webhooks.Service;
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[Singletone]
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public class WebhookSender
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{
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private readonly int? _repeatCount;
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private static readonly HttpClient httpClient = new HttpClient();
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private readonly IServiceScopeFactory _scopeFactory;
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private readonly ILog _log;
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public WebhookSender(IOptionsMonitor<ILog> options, IServiceScopeFactory scopeFactory, Settings settings)
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{
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_log = options.Get("ASC.Webhooks.Core");
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_scopeFactory = scopeFactory;
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_repeatCount = settings.RepeatCount;
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}
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public async Task Send(WebhookRequest webhookRequest, CancellationToken cancellationToken)
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{
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using var scope = _scopeFactory.CreateScope();
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var dbWorker = scope.ServiceProvider.GetService<DbWorker>();
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var entry = dbWorker.ReadFromJournal(webhookRequest.Id);
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var id = entry.Id;
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var requestURI = entry.Uri;
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var secretKey = entry.SecretKey;
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var data = entry.Payload;
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HttpResponseMessage response = new HttpResponseMessage();
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HttpRequestMessage request = new HttpRequestMessage();
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for (int i = 0; i < _repeatCount; i++)
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{
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try
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{
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request = new HttpRequestMessage(HttpMethod.Post, requestURI);
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request.Headers.Add("Accept", "*/*");
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request.Headers.Add("Secret", "SHA256=" + GetSecretHash(secretKey, data));
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request.Content = new StringContent(
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data,
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Encoding.UTF8,
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"application/json");
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response = await httpClient.SendAsync(request, cancellationToken);
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if (response.IsSuccessStatusCode)
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{
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UpdateDb(dbWorker, id, response, request, ProcessStatus.Success);
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_log.Debug("Response: " + response);
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break;
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}
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else if (i == _repeatCount - 1)
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{
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UpdateDb(dbWorker, id, response, request, ProcessStatus.Failed);
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_log.Debug("Response: " + response);
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}
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}
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catch (Exception ex)
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{
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if (i == _repeatCount - 1)
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{
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UpdateDb(dbWorker, id, response, request, ProcessStatus.Failed);
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}
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_log.Error(ex.Message);
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continue;
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}
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}
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}
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private string GetSecretHash(string secretKey, string body)
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{
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string computedSignature;
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var secretBytes = Encoding.UTF8.GetBytes(secretKey);
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using (var hasher = new HMACSHA256(secretBytes))
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{
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var data = Encoding.UTF8.GetBytes(body);
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computedSignature = BitConverter.ToString(hasher.ComputeHash(data));
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}
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return computedSignature;
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}
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private void UpdateDb(DbWorker dbWorker, int id, HttpResponseMessage response, HttpRequestMessage request, ProcessStatus status)
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{
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var responseHeaders = JsonSerializer.Serialize(response.Headers.ToDictionary(r => r.Key, v => v.Value));
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var requestHeaders = JsonSerializer.Serialize(request.Headers.ToDictionary(r => r.Key , v => v.Value));
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string responsePayload;
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using (var streamReader = new StreamReader(response.Content.ReadAsStream()))
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{
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var responseContent = streamReader.ReadToEnd();
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responsePayload = JsonSerializer.Serialize(responseContent);
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}
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dbWorker.UpdateWebhookJournal(id, status, responsePayload, responseHeaders, requestHeaders);
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}
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}
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