feat: publish standalone worker

Separate worker packaging and service lifecycle from the control plane.

app/models/dns_record.go

@@ -0,0 +1,80 @@
+package models
+
+import (
+	"log"
+
+	"rsgit.ru/rsmon/rsmon/internal/netaddr"
+
+	"rsgit.ru/rsmon/rsmon/app/models/concerns"
+)
+
+// DNSRecord provides functionality.
+type DNSRecord struct {
+	concerns.Model
+	MonitorID int64    `gorm:"type:bigint REFERENCES monitors(id)" json:"monitor_id,omitempty"`
+	Monitor   *Monitor `json:"-"`
+
+	Name  string       `json:"name"`
+	Kind  string       `json:"kind"`
+	Value netaddr.Inet `json:"value" gorm:"type:bytea;"`
+}
+
+// SaveIps provides functionality.
+func SaveIps(m *Monitor, _ Check, ips []NSRecord) { //nolint:gocritic // hugeParam: accepted for interface compatibility
+	// log.Println("save ips for monitor")
+	// spew.Dump(m)
+	var err error
+	tx := DB().Begin()
+
+	currentRecords := make([]DNSRecord, 0)
+	_ = tx.Model(&m).Association("DNSRecords").Find(&currentRecords)
+
+	recordHash := make(map[string]DNSRecord, 0)
+	for _, record := range currentRecords {
+		recordHash[record.Name] = record
+	}
+	nextRecords := make(map[string]bool, 0)
+
+	for _, ip := range ips {
+		if record, ok := recordHash[ip.Name]; ok {
+			// log.Println("old value:", record)
+			record.MonitorID = m.ID
+			record.Value = ip.Value
+			record.Kind = ip.Kind
+			err = tx.Model(&m).Association("DNSRecords").Replace(&record)
+			if err != nil {
+				log.Println("fatal error in saveips", err)
+				return
+			}
+		} else {
+			record = DNSRecord{
+				MonitorID: m.ID,
+				Name:      ip.Name,
+				Kind:      ip.Kind,
+				Value:     ip.Value,
+			}
+			if _, ok := nextRecords[ip.Name]; !ok {
+				nextRecords[ip.Name] = true
+				err = tx.Model(&m).Association("DNSRecords").Append(&record)
+				if err != nil {
+					log.Println("fatal error in saveips", err)
+					return
+				}
+			}
+		}
+	}
+	// spew.Dump(ips_hash)
+
+	err = tx.Commit().Error
+	if err != nil {
+		log.Println("fatal error in saveips", err)
+		return
+	}
+}
+
+// NSRecord provides functionality.
+type NSRecord struct {
+	Name  string
+	Kind  string
+	Value netaddr.Inet
+}