added timer hooks

logic/timer.go

@@ -0,0 +1,54 @@
+package logic
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/gravitl/netmaker/logger"
+)
+
+// timeHooks - functions to run once a day, functions must take no parameters
+var timeHooks = []interface{}{
+	loggerDump,
+	sendTelemetry,
+}
+
+func loggerDump() {
+	logger.DumpFile(fmt.Sprintf("data/netmaker.log.%s", time.Now().Format(logger.TimeFormatDay)))
+}
+
+// TIMER_HOURS_BETWEEN_RUN - How long to wait before sending telemetry to server (24 hours)
+const TIMER_HOURS_BETWEEN_RUN = 24
+
+// AddHook - adds a hook function to run every 24hrs
+func AddHook(ifaceToAdd interface{}) {
+	timeHooks = append(timeHooks, ifaceToAdd)
+}
+
+// runHooks - runs the functions currently in the timeHooks data structure
+func runHooks() {
+	for _, hook := range timeHooks {
+		hook.(func())()
+	}
+}
+
+// TimerCheckpoint - Checks if 24 hours has passed since telemetry was last sent. If so, sends telemetry data to posthog
+func TimerCheckpoint() error {
+
+	// get the telemetry record in the DB, which contains a timestamp
+	telRecord, err := fetchTelemetryRecord()
+	if err != nil {
+		return err
+	}
+	sendtime := time.Unix(telRecord.LastSend, 0).Add(time.Hour * time.Duration(TIMER_HOURS_BETWEEN_RUN))
+	// can set to 2 minutes for testing
+	// sendtime := time.Unix(telRecord.LastSend, 0).Add(time.Minute * 2)
+	enoughTimeElapsed := time.Now().After(sendtime)
+	// if more than 24 hours has elapsed, send telemetry to posthog
+	if enoughTimeElapsed {
+		// run any time hooks
+		runHooks()
+	}
+	// set telemetry timestamp for server, restarts 24 hour cycle
+	return setTelemetryTimestamp(telRecord.UUID)
+}