76 lines
2.9 KiB
C#
76 lines
2.9 KiB
C#
using System.Net;
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using System.Net.Mail;
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namespace WpywMail.Native;
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public sealed class DeliveryQueue
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{
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private readonly AppConfig config;
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private readonly FileStore store;
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private readonly DirectSmtpDelivery direct;
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public DeliveryQueue(AppConfig config, FileStore store)
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{
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this.config = config;
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this.store = store;
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direct = new DirectSmtpDelivery(config, store);
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}
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public async Task RunAsync(CancellationToken token)
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{
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AppLog.Info($"[发送] 投递模式：{(config.DeliveryMode.Equals("relay", StringComparison.OrdinalIgnoreCase) ? "SMTP 中继" : "按 MX 直接投递")}");
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while (!token.IsCancellationRequested)
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{
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foreach (var job in store.TakeDueQueue(10))
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{
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try
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{
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var message = store.GetById(job.MessageId) ?? throw new InvalidOperationException("发送队列中的邮件不存在。");
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await Deliver(message, job.Recipients, token);
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store.CompleteQueue(job);
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AppLog.Info($"[发送] 投递成功：{string.Join(", ", job.Recipients)}");
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}
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catch (Exception ex)
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{
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store.FailQueue(job, ex);
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AppLog.Error($"[发送队列] {job.MessageId} → {string.Join(", ", job.Recipients)}：{ex.Message}");
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}
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}
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await Task.Delay(TimeSpan.FromSeconds(5), token).ContinueWith(_ => { });
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}
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}
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private async Task Deliver(MailMessage message, string[] recipients, CancellationToken token)
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{
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if (config.DeliveryMode.Equals("relay", StringComparison.OrdinalIgnoreCase))
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{
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await DeliverThroughRelay(message, recipients, token);
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return;
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}
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await direct.DeliverAsync(message, recipients, token);
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}
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private async Task DeliverThroughRelay(MailMessage message, string[] recipients, CancellationToken token)
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{
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if (string.IsNullOrWhiteSpace(config.Relay.Host)) throw new InvalidOperationException("DeliveryMode=relay 时必须配置 Relay.Host。");
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using var client = new SmtpClient(config.Relay.Host, config.Relay.Port)
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{
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EnableSsl = config.Relay.EnableSsl,
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DeliveryMethod = SmtpDeliveryMethod.Network,
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Timeout = 60_000
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};
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if (!string.IsNullOrWhiteSpace(config.Relay.User)) client.Credentials = new NetworkCredential(config.Relay.User, config.Relay.Password);
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using var mail = new System.Net.Mail.MailMessage
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{
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From = new MailAddress(message.From),
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Subject = message.Subject,
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Body = message.Text,
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BodyEncoding = System.Text.Encoding.UTF8,
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SubjectEncoding = System.Text.Encoding.UTF8
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};
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foreach (var recipient in recipients) mail.To.Add(recipient);
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await client.SendMailAsync(mail, token);
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}
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}
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