selfpost/internal/web/view/templates/delivery.html

{{/* One message's page. It takes the whole column rather than the reading
     measure (see the "wide" block in layout.html): the two cards below stand
     side by side, and under them are raw mail.log lines, which are long by
     nature and were the reason the send log opted out too. */}}
{{define "wide"}}wide{{end}}

{{define "content"}}
{{/* The subject is the page's name — it is what the message was about, and
     what an operator arriving from the log is holding in their head. The route
     under it is the other half of the identity: who it was from and who it was
     for, with the outcome badged on the end so the answer is on the first line
     of the page rather than somewhere in the cards below. */}}
<h1 class="subject">{{if .Row.Subject}}{{.Row.Subject}}{{else}}(no subject){{end}}</h1>
<p class="route">
  <span class="addr">{{.Row.From}}</span>
  <span class="arrow" aria-hidden="true">&rarr;</span>
  <span class="addr">{{if .Row.To}}{{.Row.To}}{{else}}—{{end}}</span>
  <span class="st st-{{.Level}}">{{.Row.Status}}</span>
</p>

{{template "back_link" (back .BackURL "Back to deliveries")}}

{{/* The two columns: what was recorded on the left, in what order it happened
     on the right. They are a pair — the facts are only worth reading against
     the history and the history only means anything for a known message — so
     they are read together rather than one after the other (.split in
     panel.css lays them down into one column when there is no room). */}}
<div class="split">
  <div class="card" id="message">
    <h2>Message</h2>
    <p class="muted">What the journal recorded as Postfix accepted this
    message. The delivery log lists only what identifies a row at a glance;
    everything the table has no column for is here.</p>

    <div class="facts">
      <div class="fact">
        <span class="fact-label">Domain</span>
        <span class="fact-value">{{if .Row.Domain}}{{.Row.Domain}}{{else}}—{{end}}</span>
      </div>
      <div class="fact">
        <span class="fact-label">Application</span>
        <span class="fact-value">{{if .Row.AppLogin}}{{.Row.AppLogin}}{{else}}—{{end}}</span>
      </div>
      <div class="fact">
        <span class="fact-label">Accepted</span>
        <span class="fact-value">{{.Row.CreatedAt.Format "2006-01-02 15:04:05"}} UTC</span>
      </div>
      <div class="fact">
        <span class="fact-label">Status reported</span>
        <span class="fact-value">{{.Row.UpdatedAt.Format "2006-01-02 15:04:05"}} UTC</span>
      </div>
      {{/* The queue id is monospace because it is an identifier to compare
           character by character against a log line, not a word to read. */}}
      <div class="fact">
        <span class="fact-label">Queue id</span>
        <span class="fact-value mono">{{if .Row.QueueID}}{{.Row.QueueID}}{{else}}—{{end}}</span>
      </div>
      <div class="fact">
        <span class="fact-label">Journal id</span>
        <span class="fact-value mono">{{.Row.ID}}</span>
      </div>
    </div>

    {{if not .Row.QueueID}}
    <p class="muted">A message with no queue id was refused before Postfix
    queued it — under a level-2 rate limit — so it has no delivery attempt to
    show.</p>
    {{end}}
  </div>

  <div class="card" id="history">
    <h2>History</h2>
    <p class="muted">A row is written when the message is accepted and updated
    once when Postfix reports the attempt for this recipient, so these are the
    two moments the journal knows about — not a trace of the SMTP conversation,
    which is in the delivery log below.</p>

    <ol class="timeline">
      {{range .Events}}
      <li class="event lvl-{{.Level}}{{if .At.IsZero}} pending{{end}}">
        <p class="event-time">{{if .At.IsZero}}not yet{{else}}{{.At.Format "2006-01-02 15:04:05"}} UTC{{end}}</p>
        <p class="event-title"><span class="st st-{{.Level}}">{{.Status}}</span> {{.Title}}</p>
        <p class="event-detail muted">{{.Detail}}</p>
      </li>
      {{end}}
    </ol>
  </div>
</div>

{{/* Under both, at the column's full width: what Postfix itself wrote. The
     queue id used to be printed on this page as something to go and search the
     system log for by hand — this is that search, already done. */}}
<div class="card" id="delivery-log">
  <h2>Delivery log</h2>
  <p class="muted">The lines Postfix wrote about this message in
  <code>mail.log</code>, oldest first — the connection to the receiving server,
  its reply, and the status that reply was filed as. Only lines carrying this
  message's queue id are shown; the whole log is on the
  <a href="/system-log">System log</a> page.</p>

  {{if .LogRows}}
  {{/* Two columns, the way the send log itself is a table: the times down one
       edge are what the message's pace is read off — the seconds between the
       connection and the reply — and lining them up is what makes that
       readable. A line whose head was not a timestamp keeps its whole text in
       the second column and leaves the first empty. */}}
  <table class="log">
    <thead>
      <tr><th>Time</th><th>Message</th></tr>
    </thead>
    <tbody>
      {{range .LogRows}}
      <tr>
        <td class="time muted">{{if .Time}}{{.Time}}{{else}}—{{end}}</td>
        <td class="log-text">{{.Text}}</td>
      </tr>
      {{end}}
    </tbody>
  </table>
  {{else}}
  <p class="muted">{{.LogNote}}</p>
  {{end}}
</div>
{{end}}