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05266d9062
Alerts previously showed the raw Proxmox node name (e.g., "on pve") even when users configured a display name (e.g., "SPACEX") via Settings or the host agent --hostname flag. This affected the alert UI, email notifications, and webhook payloads. Add NodeDisplayName field to the alert chain: cache display names in the alert Manager (populated by CheckNode/CheckHost on every poll), resolve them at alert creation via preserveAlertState, refresh on metric updates, and enrich at read time in GetActiveAlerts. Update models.Alert, the syncAlertsToState conversion, email templates, Apprise body text, webhook payloads, and all frontend rendering paths. Related to #1188
432 lines
17 KiB
Go
432 lines
17 KiB
Go
package notifications
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import (
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"fmt"
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"strings"
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"time"
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"unicode"
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"github.com/rcourtman/pulse-go-rewrite/internal/alerts"
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)
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// titleCase capitalizes the first letter of each word (simple ASCII-safe version)
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func titleCase(s string) string {
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var result strings.Builder
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capitalizeNext := true
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for _, r := range s {
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if unicode.IsSpace(r) {
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capitalizeNext = true
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result.WriteRune(r)
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} else if capitalizeNext {
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result.WriteRune(unicode.ToUpper(r))
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capitalizeNext = false
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} else {
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result.WriteRune(unicode.ToLower(r))
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}
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}
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return result.String()
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}
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// alertNodeDisplay returns the display name for an alert's node, falling back
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// to the raw node name if no display name is set.
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func alertNodeDisplay(alert *alerts.Alert) string {
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if alert.NodeDisplayName != "" {
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return alert.NodeDisplayName
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}
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return alert.Node
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}
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// EmailTemplate generates a professional HTML email template for alerts
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func EmailTemplate(alertList []*alerts.Alert, isSingle bool) (subject, htmlBody, textBody string) {
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if isSingle && len(alertList) == 1 {
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return singleAlertTemplate(alertList[0])
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}
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return groupedAlertTemplate(alertList)
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}
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func singleAlertTemplate(alert *alerts.Alert) (subject, htmlBody, textBody string) {
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levelColor := "#ff6b6b"
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levelBg := "#fee"
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if alert.Level == "warning" {
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levelColor = "#ffd93d"
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levelBg = "#fffaeb"
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}
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// Properly format alert type (CPU, Memory, etc.)
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alertType := alert.Type
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switch strings.ToLower(alertType) {
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case "cpu":
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alertType = "CPU"
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case "memory":
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alertType = "Memory"
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case "disk":
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alertType = "Disk"
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case "io":
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alertType = "I/O"
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default:
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alertType = titleCase(alertType)
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}
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subject = fmt.Sprintf("[Pulse Alert] %s: %s on %s",
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titleCase(string(alert.Level)), alertType, alert.ResourceName)
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htmlBody = fmt.Sprintf(`<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<style>
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body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; line-height: 1.6; color: #333; background: #f5f5f5; margin: 0; padding: 0; }
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.container { max-width: 600px; margin: 20px auto; background: #fff; border-radius: 8px; overflow: hidden; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
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.header { background: #1a1a1a; color: #fff; padding: 20px; text-align: center; }
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.header h1 { margin: 0; font-size: 24px; font-weight: 500; }
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.pulse-logo { width: 40px; height: 40px; margin: 0 auto 10px; }
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.content { padding: 30px; }
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.alert-box { background: %s; border-left: 4px solid %s; padding: 20px; margin: 20px 0; border-radius: 4px; }
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.alert-level { color: %s; font-weight: bold; text-transform: uppercase; font-size: 14px; }
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.alert-resource { font-size: 18px; font-weight: 500; margin: 10px 0; color: #1a1a1a; }
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.metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 20px 0; }
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.metric { background: #f8f9fa; padding: 15px; border-radius: 4px; }
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.metric-label { color: #666; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
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.metric-value { font-size: 24px; font-weight: 500; color: #1a1a1a; margin-top: 5px; }
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.details { background: #f8f9fa; padding: 20px; border-radius: 4px; margin: 20px 0; }
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.detail-row { display: flex; justify-content: space-between; align-items: center; margin: 10px 0; padding-bottom: 10px; border-bottom: 1px solid #e9ecef; gap: 20px; }
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.detail-row:last-child { border-bottom: none; padding-bottom: 0; }
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.detail-label { color: #666; min-width: 120px; }
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.detail-value { font-weight: 500; color: #1a1a1a; text-align: right; flex: 1; }
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.footer { background: #f8f9fa; padding: 20px; text-align: center; color: #666; font-size: 12px; }
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.footer a { color: #0066cc; text-decoration: none; }
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@media (max-width: 600px) {
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.metrics { grid-template-columns: 1fr; }
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.container { margin: 0; border-radius: 0; }
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}
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</style>
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</head>
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<body>
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<div class="container">
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<div class="header">
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<svg class="pulse-logo" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
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<path d="M10 50 L30 50 L35 30 L40 70 L45 10 L50 90 L55 30 L60 70 L65 50 L90 50"
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stroke="#4ade80" stroke-width="3" fill="none"/>
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</svg>
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<h1>Pulse Monitoring Alert</h1>
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</div>
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<div class="content">
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<div class="alert-box">
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<div class="alert-level">%s Alert</div>
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<div class="alert-resource">%s</div>
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<div>%s</div>
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</div>
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<div class="metrics">
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<div class="metric">
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<div class="metric-label">Current Value</div>
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<div class="metric-value">%s</div>
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</div>
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<div class="metric">
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<div class="metric-label">Threshold</div>
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<div class="metric-value">%s</div>
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</div>
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</div>
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<div class="details">
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<div class="detail-row">
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<span class="detail-label">Resource ID</span>
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<span class="detail-value">%s</span>
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</div>
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<div class="detail-row">
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<span class="detail-label">Alert Type</span>
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<span class="detail-value">%s</span>
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</div>
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<div class="detail-row">
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<span class="detail-label">Node</span>
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<span class="detail-value">%s</span>
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</div>
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<div class="detail-row">
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<span class="detail-label">Instance</span>
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<span class="detail-value">%s</span>
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</div>
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<div class="detail-row">
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<span class="detail-label">Started</span>
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<span class="detail-value">%s</span>
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</div>
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<div class="detail-row">
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<span class="detail-label">Duration</span>
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<span class="detail-value">%s</span>
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</div>
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</div>
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</div>
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<div class="footer">
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<p>This is an automated notification from Pulse Monitoring</p>
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<p>View alerts and configure settings in your Pulse dashboard</p>
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</div>
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</div>
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</body>
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</html>`,
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levelBg, levelColor, levelColor,
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alert.Level,
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alert.ResourceName,
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alert.Message,
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formatMetricValue(alert.Type, alert.Value),
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formatMetricThreshold(alert.Type, alert.Threshold),
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alert.ResourceID,
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alertType,
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alertNodeDisplay(alert),
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alert.Instance,
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alert.StartTime.Format("Jan 2, 2006 at 3:04 PM"),
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formatDuration(time.Since(alert.StartTime)),
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)
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// Plain text version
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textBody = fmt.Sprintf(`PULSE MONITORING ALERT
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%s ALERT: %s
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Resource: %s (%s)
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Type: %s
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Current Value: %s (Threshold: %s)
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Message: %s
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Details:
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- Node: %s
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- Instance: %s
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- Started: %s
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- Duration: %s
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This is an automated notification from Pulse Monitoring.
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View alerts and configure settings in your Pulse dashboard.`,
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strings.ToUpper(string(alert.Level)),
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alert.ResourceName,
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alert.ResourceName,
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alert.ResourceID,
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alert.Type,
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formatMetricValue(alert.Type, alert.Value),
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formatMetricThreshold(alert.Type, alert.Threshold),
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alert.Message,
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alertNodeDisplay(alert),
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alert.Instance,
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alert.StartTime.Format("Jan 2, 2006 at 3:04 PM"),
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formatDuration(time.Since(alert.StartTime)),
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)
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return subject, htmlBody, textBody
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}
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func groupedAlertTemplate(alertList []*alerts.Alert) (subject, htmlBody, textBody string) {
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critical := 0
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warning := 0
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for _, alert := range alertList {
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if alert.Level == "critical" {
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critical++
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} else {
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warning++
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}
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}
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// Subject line
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if critical > 0 && warning > 0 {
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subject = fmt.Sprintf("[Pulse Alert] %d Critical, %d Warning alerts", critical, warning)
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} else if critical > 0 {
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subject = fmt.Sprintf("[Pulse Alert] %d Critical alert%s", critical, pluralize(critical))
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} else {
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subject = fmt.Sprintf("[Pulse Alert] %d Warning alert%s", warning, pluralize(warning))
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}
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// Build alert rows
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var alertRows strings.Builder
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for _, alert := range alertList {
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levelColor := "#ff6b6b"
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if alert.Level == "warning" {
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levelColor = "#ffd93d"
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}
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alertRows.WriteString(fmt.Sprintf(`
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<tr>
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<td style="padding: 12px; border-bottom: 1px solid #e9ecef;">
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<div style="display: flex; align-items: center;">
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<span style="display: inline-block; width: 8px; height: 8px; background: %s; border-radius: 50%%; margin-right: 10px;"></span>
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<div>
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<div style="font-weight: 500; color: #1a1a1a;">%s</div>
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<div style="font-size: 12px; color: #666; margin-top: 2px;">%s on %s</div>
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</div>
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</div>
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</td>
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<td style="padding: 12px; border-bottom: 1px solid #e9ecef; text-align: center;">
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<span style="color: %s; font-weight: 500; text-transform: uppercase; font-size: 12px;">%s</span>
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</td>
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<td style="padding: 12px; border-bottom: 1px solid #e9ecef; text-align: right;">
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<div style="font-weight: 500;">%s</div>
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<div style="font-size: 12px; color: #666;">of %s</div>
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</td>
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<td style="padding: 12px; border-bottom: 1px solid #e9ecef; text-align: right; color: #666; font-size: 12px;">
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%s ago
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</td>
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</tr>`,
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levelColor,
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alert.ResourceName,
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alert.Type, alertNodeDisplay(alert),
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levelColor, alert.Level,
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formatMetricValue(alert.Type, alert.Value), formatMetricThreshold(alert.Type, alert.Threshold),
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formatDuration(time.Since(alert.StartTime)),
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))
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}
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htmlBody = fmt.Sprintf(`<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<style>
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body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; line-height: 1.6; color: #333; background: #f5f5f5; margin: 0; padding: 0; }
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.container { max-width: 800px; margin: 20px auto; background: #fff; border-radius: 8px; overflow: hidden; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
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.header { background: #1a1a1a; color: #fff; padding: 20px; text-align: center; }
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.header h1 { margin: 0; font-size: 24px; font-weight: 500; }
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.pulse-logo { width: 40px; height: 40px; margin: 0 auto 10px; }
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.content { padding: 30px; }
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.summary { background: #f8f9fa; padding: 20px; border-radius: 4px; margin-bottom: 30px; }
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.summary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 20px; margin-top: 15px; }
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.summary-item { text-align: center; }
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.summary-count { font-size: 32px; font-weight: 500; }
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.critical-count { color: #ff6b6b; }
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.warning-count { color: #ffd93d; }
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.summary-label { color: #666; font-size: 14px; margin-top: 5px; }
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.alerts-table { width: 100%%; margin-top: 20px; border-collapse: collapse; }
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.alerts-table th { text-align: left; padding: 12px; border-bottom: 2px solid #e9ecef; color: #666; font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
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.footer { background: #f8f9fa; padding: 20px; text-align: center; color: #666; font-size: 12px; }
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.footer a { color: #0066cc; text-decoration: none; }
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@media (max-width: 600px) {
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.container { margin: 0; border-radius: 0; }
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.alerts-table { font-size: 14px; }
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}
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</style>
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</head>
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<body>
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<div class="container">
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<div class="header">
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<svg class="pulse-logo" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
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<path d="M10 50 L30 50 L35 30 L40 70 L45 10 L50 90 L55 30 L60 70 L65 50 L90 50"
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stroke="#4ade80" stroke-width="3" fill="none"/>
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</svg>
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<h1>Pulse Monitoring Alert Summary</h1>
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</div>
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<div class="content">
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<div class="summary">
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<h2 style="margin: 0 0 15px 0; font-size: 18px;">%d New Alert%s</h2>
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<div class="summary-grid">`,
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len(alertList), pluralize(len(alertList)))
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if critical > 0 {
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htmlBody += fmt.Sprintf(`
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<div class="summary-item">
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<div class="summary-count critical-count">%d</div>
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<div class="summary-label">Critical</div>
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</div>`, critical)
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}
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if warning > 0 {
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htmlBody += fmt.Sprintf(`
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<div class="summary-item">
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<div class="summary-count warning-count">%d</div>
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<div class="summary-label">Warning</div>
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</div>`, warning)
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}
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htmlBody += fmt.Sprintf(`
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</div>
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</div>
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<table class="alerts-table">
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<thead>
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<tr>
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<th>Resource</th>
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<th style="text-align: center;">Level</th>
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<th style="text-align: right;">Value</th>
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<th style="text-align: right;">Duration</th>
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</tr>
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</thead>
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<tbody>%s
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</tbody>
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</table>
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</div>
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<div class="footer">
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<p>This is an automated notification from Pulse Monitoring</p>
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<p>View alerts and configure settings in your Pulse dashboard</p>
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</div>
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</div>
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</body>
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</html>`, alertRows.String())
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// Plain text version
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var textBuilder strings.Builder
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textBuilder.WriteString("PULSE MONITORING ALERT SUMMARY\n\n")
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textBuilder.WriteString(fmt.Sprintf("%d New Alert%s\n", len(alertList), pluralize(len(alertList))))
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if critical > 0 {
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textBuilder.WriteString(fmt.Sprintf("Critical: %d\n", critical))
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}
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if warning > 0 {
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textBuilder.WriteString(fmt.Sprintf("Warning: %d\n", warning))
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}
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textBuilder.WriteString("\nAlert Details:\n")
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textBuilder.WriteString("─────────────────────────────────────────────────────────────\n")
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for i, alert := range alertList {
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textBuilder.WriteString(fmt.Sprintf("\n%d. %s (%s)\n", i+1, alert.ResourceName, alert.ResourceID))
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textBuilder.WriteString(fmt.Sprintf(" Level: %s | Type: %s\n", strings.ToUpper(string(alert.Level)), alert.Type))
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textBuilder.WriteString(fmt.Sprintf(" Value: %s (Threshold: %s)\n", formatMetricValue(alert.Type, alert.Value), formatMetricThreshold(alert.Type, alert.Threshold)))
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textBuilder.WriteString(fmt.Sprintf(" Node: %s | Started: %s ago\n", alertNodeDisplay(alert), formatDuration(time.Since(alert.StartTime))))
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textBuilder.WriteString(fmt.Sprintf(" Message: %s\n", alert.Message))
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}
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textBuilder.WriteString("\n─────────────────────────────────────────────────────────────\n")
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textBuilder.WriteString("This is an automated notification from Pulse Monitoring.\n")
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textBuilder.WriteString("Configure alert settings in the Pulse dashboard.")
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textBody = textBuilder.String()
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return subject, htmlBody, textBody
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}
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func formatDuration(d time.Duration) string {
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if d < time.Minute {
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return fmt.Sprintf("%d seconds", int(d.Seconds()))
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} else if d < time.Hour {
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return fmt.Sprintf("%d minutes", int(d.Minutes()))
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} else if d < 24*time.Hour {
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return fmt.Sprintf("%.1f hours", d.Hours())
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}
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return fmt.Sprintf("%.1f days", d.Hours()/24)
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}
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func pluralize(count int) string {
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if count == 1 {
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return ""
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}
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return "s"
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}
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// formatMetricValue formats a metric value with the appropriate unit
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func formatMetricValue(metricType string, value float64) string {
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switch strings.ToLower(metricType) {
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case "diskread", "diskwrite", "networkin", "networkout":
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return fmt.Sprintf("%.1f MB/s", value)
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case "temperature":
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return fmt.Sprintf("%.1f°C", value)
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case "cpu", "memory", "disk", "usage":
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return fmt.Sprintf("%.1f%%", value)
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default:
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return fmt.Sprintf("%.1f", value)
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}
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}
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// formatMetricThreshold formats a metric threshold with the appropriate unit
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func formatMetricThreshold(metricType string, threshold float64) string {
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switch strings.ToLower(metricType) {
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case "diskread", "diskwrite", "networkin", "networkout":
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return fmt.Sprintf("%.0f MB/s", threshold)
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case "temperature":
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return fmt.Sprintf("%.0f°C", threshold)
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case "cpu", "memory", "disk", "usage":
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return fmt.Sprintf("%.0f%%", threshold)
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default:
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return fmt.Sprintf("%.0f", threshold)
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}
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}
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