feat: publish standalone worker

Separate worker packaging and service lifecycle from the control plane.

app/models/event.go

@@ -0,0 +1,83 @@
+package models
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/lib/pq"
+	"gorm.io/gorm"
+
+	"rsgit.ru/rsmon/rsmon/app/models/concerns"
+	"rsgit.ru/rsmon/rsmon/internal/util"
+)
+
+// Event provides functionality.
+type Event struct {
+	concerns.Model
+
+	MonitorID int64    `gorm:"type:bigint REFERENCES monitors(id)" json:"monitor_id"`
+	Monitor   *Monitor `json:"monitor,omitempty"`
+
+	StartTime *time.Time `json:"start_time"`
+	EndTime   *time.Time `json:"end_time"`
+	Duration  int        `json:"duration"`
+	Errors    int        `json:"errors"`
+	Oks       int        `json:"oks"`
+	State     string     `gorm:"index" json:"state"`
+	Reason    string     `json:"reason"`
+
+	Messages []Message `json:"messages" gorm:"many2many:event_messages;"`
+
+	ChecksDown pq.StringArray `gorm:"type:varchar(255)[]" json:"checks_down"`
+	Checks     []Check        `json:"-" gorm:"many2many:event_checks;"`
+
+	ExpiresAt *time.Time `json:"-"`
+
+	Audited
+}
+
+// EventScope provides functionality.
+func EventScope(q *gorm.DB) *gorm.DB {
+	return q.Where("state IN ('current', 'ended')").
+		Preload("Checks").
+		Preload("Monitor").
+		Preload("Monitor.Group").
+		Preload("Monitor.Group.Notifications").
+		Preload("Monitor.Group.Notifications.Contacts")
+}
+
+// GetDuration provides functionality.
+func (e *Event) GetDuration(tn time.Time) int64 {
+	endTime := e.EndTime
+	if endTime == nil {
+		endTime = &tn
+	}
+	return int64(endTime.Sub(*e.StartTime) / time.Second)
+}
+
+// FormatDuration provides functionality.
+func (e *Event) FormatDuration() string {
+	d := e.GetDuration(time.Now())
+	return util.FormatDuration(d)
+}
+
+// Inspect provides functionality.
+func (e *Event) Inspect() string {
+	var st, et string
+	if e.StartTime != nil {
+		st = e.StartTime.Format("2006-01-02 15:04:05")
+	}
+	if e.EndTime != nil {
+		et = e.EndTime.Format("2006-01-02 15:04:05")
+	}
+
+	return fmt.Sprintf(
+		"Event<id: %d, monitor_id: %d, start_time: %s, end_time: %s, reason: %s, duration: %d>",
+		e.ID,
+		e.MonitorID,
+		st,
+		et,
+		e.Reason,
+		e.Duration,
+	)
+}