longer record creation

records.go

@@ -0,0 +1,158 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"math"
+	"time"
+
+	"github.com/pocketbase/dbx"
+	"github.com/pocketbase/pocketbase/models"
+	"github.com/pocketbase/pocketbase/tools/types"
+)
+
+func createLongerRecords(shorterRecord *models.Record) {
+	shorterRecordType := shorterRecord.Get("type").(string)
+	systemId := shorterRecord.Get("system").(string)
+	// fmt.Println("create longer records", "recordType", shorterRecordType, "systemId", systemId)
+	var longerRecordType string
+	var timeAgo time.Duration
+	var expectedShorterRecords int
+	switch shorterRecordType {
+	case "1m":
+		longerRecordType = "10m"
+		timeAgo = -10 * time.Minute
+		expectedShorterRecords = 10
+	case "10m":
+		longerRecordType = "20m"
+		timeAgo = -20 * time.Minute
+		expectedShorterRecords = 2
+	case "20m":
+		longerRecordType = "120m"
+		timeAgo = -120 * time.Minute
+		expectedShorterRecords = 6
+	default:
+		longerRecordType = "480m"
+		timeAgo = -480 * time.Minute
+		expectedShorterRecords = 4
+	}
+
+	longerRecordPeriod := time.Now().UTC().Add(timeAgo + 10*time.Second).Format("2006-01-02 15:04:05")
+	// check creation time of last 10m record
+	lastLongerRecord, err := app.Dao().FindFirstRecordByFilter(
+		"system_stats",
+		"type = {:type} && system = {:system} && created > {:created}",
+		dbx.Params{"type": longerRecordType, "system": systemId, "created": longerRecordPeriod},
+	)
+	// return if longer record exists
+	if err == nil || lastLongerRecord != nil {
+		// log.Println("longer record found. returning")
+		return
+	}
+	// get shorter records from the past x minutes
+	// shorterRecordPeriod := time.Now().UTC().Add(timeAgo + time.Second).Format("2006-01-02 15:04:05")
+	allShorterRecords, err := app.Dao().FindRecordsByFilter(
+		"system_stats",
+		"type = {:type} && system = {:system} && created > {:created}",
+		"-created",
+		-1,
+		0,
+		dbx.Params{"type": shorterRecordType, "system": systemId, "created": longerRecordPeriod},
+	)
+	// return if not enough shorter records
+	if err != nil || len(allShorterRecords) < expectedShorterRecords {
+		// log.Println("not enough shorter records. returning")
+		return
+	}
+	// average the shorter records and create 10m record
+	averagedStats := averageSystemStats(allShorterRecords)
+	collection, _ := app.Dao().FindCollectionByNameOrId("system_stats")
+	tenMinRecord := models.NewRecord(collection)
+	tenMinRecord.Set("system", systemId)
+	tenMinRecord.Set("stats", averagedStats)
+	tenMinRecord.Set("type", longerRecordType)
+	if err := app.Dao().SaveRecord(tenMinRecord); err != nil {
+		fmt.Println("failed to save longer record", "err", err.Error())
+	}
+
+}
+
+// func averageSystemStats(records []*models.Record) SystemStats {
+// 	numStats := len(records)
+// 	firstStats := records[0].Get("stats").(SystemStats)
+// 	sum := reflect.New(reflect.TypeOf(firstStats)).Elem()
+
+// 	for _, record := range records {
+// 		stats := record.Get("stats").(SystemStats)
+// 		statValue := reflect.ValueOf(stats)
+// 		for i := 0; i < statValue.NumField(); i++ {
+// 			field := sum.Field(i)
+// 			field.SetFloat(field.Float() + statValue.Field(i).Float())
+// 		}
+// 	}
+
+// 	average := reflect.New(reflect.TypeOf(firstStats)).Elem()
+// 	for i := 0; i < sum.NumField(); i++ {
+// 		average.Field(i).SetFloat(twoDecimals(sum.Field(i).Float() / float64(numStats)))
+// 	}
+
+// 	return average.Interface().(SystemStats)
+// }
+
+func averageSystemStats(records []*models.Record) SystemStats {
+	var sum SystemStats
+	count := float64(len(records))
+
+	for _, record := range records {
+		var stats SystemStats
+		json.Unmarshal([]byte(record.Get("stats").(types.JsonRaw)), &stats)
+		sum.Cpu += stats.Cpu
+		sum.Mem += stats.Mem
+		sum.MemUsed += stats.MemUsed
+		sum.MemPct += stats.MemPct
+		sum.MemBuffCache += stats.MemBuffCache
+		sum.Disk += stats.Disk
+		sum.DiskUsed += stats.DiskUsed
+		sum.DiskPct += stats.DiskPct
+		sum.DiskRead += stats.DiskRead
+		sum.DiskWrite += stats.DiskWrite
+		sum.NetworkSent += stats.NetworkSent
+		sum.NetworkRecv += stats.NetworkRecv
+	}
+
+	return SystemStats{
+		Cpu:          twoDecimals(sum.Cpu / count),
+		Mem:          twoDecimals(sum.Mem / count),
+		MemUsed:      twoDecimals(sum.MemUsed / count),
+		MemPct:       twoDecimals(sum.MemPct / count),
+		MemBuffCache: twoDecimals(sum.MemBuffCache / count),
+		Disk:         twoDecimals(sum.Disk / count),
+		DiskUsed:     twoDecimals(sum.DiskUsed / count),
+		DiskPct:      twoDecimals(sum.DiskPct / count),
+		DiskRead:     twoDecimals(sum.DiskRead / count),
+		DiskWrite:    twoDecimals(sum.DiskWrite / count),
+		NetworkSent:  twoDecimals(sum.NetworkSent / count),
+		NetworkRecv:  twoDecimals(sum.NetworkRecv / count),
+	}
+}
+
+/* Round float to two decimals */
+func twoDecimals(value float64) float64 {
+	return math.Round(value*100) / 100
+}
+
+/* Delete records of specified collection and type that are older than timeLimit */
+func deleteOldRecords(collection string, recordType string, timeLimit time.Duration) {
+	log.Println("Deleting old", recordType, "records...")
+	timeLimitStamp := time.Now().UTC().Add(timeLimit).Format("2006-01-02 15:04:05")
+	records, _ := app.Dao().FindRecordsByExpr(collection,
+		dbx.NewExp("type = {:type}", dbx.Params{"type": recordType}),
+		dbx.NewExp("created < {:created}", dbx.Params{"created": timeLimitStamp}),
+	)
+	for _, record := range records {
+		if err := app.Dao().DeleteRecord(record); err != nil {
+			log.Fatal(err)
+		}
+	}
+}