123 lines
4.4 KiB
C#
123 lines
4.4 KiB
C#
using System;
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using System.IO;
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using System.Linq;
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using System.Net.Http;
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using System.Security.Cryptography;
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using System.Text;
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using System.Text.Json;
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using System.Threading;
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using System.Threading.Tasks;
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using ASC.Common;
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using ASC.Common.Logging;
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using ASC.Web.Webhooks;
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using ASC.Webhooks.Core;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Options;
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namespace ASC.Webhooks.Service
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{
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[Singletone]
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public class WebhookSender
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{
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public int? RepeatCount { get; }
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private readonly IHttpClientFactory _httpClientFactory;
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private IServiceProvider ServiceProvider { get; }
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private ILog Log { get; }
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public WebhookSender(IOptionsMonitor<ILog> options, IServiceProvider serviceProvider, Settings settings, IHttpClientFactory httpClientFactory)
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{
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Log = options.Get("ASC.Webhooks.Core");
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ServiceProvider = serviceProvider;
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_httpClientFactory = httpClientFactory;
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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 = ServiceProvider.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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var httpClient = _httpClientFactory.CreateClient();
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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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}
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