[bugfix] update go-cache library to fix critical bug during cache sweep scheduling (#725)

* update go-cache library to fix critical bug regarding cache sweep scheduling

Signed-off-by: kim <grufwub@gmail.com>

* update go-sched

Signed-off-by: kim <grufwub@gmail.com>

vendor/codeberg.org/gruf/go-runners/run.go

@@ -4,8 +4,9 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"sync"
 	"time"
+
+	"codeberg.org/gruf/go-atomics"
 )
 
 // FuncRunner provides a means of managing long-running functions e.g. main logic loops.
@@ -17,9 +18,8 @@ type FuncRunner struct {
 	// provided function. This can be used both for logging, and for error filtering
 	ErrorHandler func(err error) error
 
-	svc Service    // underlying service to manage start/stop
-	err error      // last-set error
-	mu  sync.Mutex // protects err
+	svc Service // underlying service to manage start/stop
+	err atomics.Error
 }
 
 // Go will attempt to run 'fn' asynchronously. The provided context is used to propagate requested
@@ -28,22 +28,20 @@ type FuncRunner struct {
 // time before considering the function as handed off. Returned bool is success state, i.e. returns true
 // if function is successfully handed off or returns within hand off time with nil error.
 func (r *FuncRunner) Go(fn func(ctx context.Context) error) bool {
+	var has bool
+
 	done := make(chan struct{})
 
 	go func() {
 		var cancelled bool
 
-		has := r.svc.Run(func(ctx context.Context) {
+		has = r.svc.Run(func(ctx context.Context) {
 			// reset error
-			r.mu.Lock()
-			r.err = nil
-			r.mu.Unlock()
+			r.err.Store(nil)
 
 			// Run supplied func and set errror if returned
 			if err := Run(func() error { return fn(ctx) }); err != nil {
-				r.mu.Lock()
-				r.err = err
-				r.mu.Unlock()
+				r.err.Store(err)
 			}
 
 			// signal done
@@ -61,19 +59,18 @@ func (r *FuncRunner) Go(fn func(ctx context.Context) error) bool {
 		switch has {
 		// returned after starting
 		case true:
-			r.mu.Lock()
+			// Load set error
+			err := r.err.Load()
 
 			// filter out errors due FuncRunner.Stop() being called
-			if cancelled && errors.Is(r.err, context.Canceled) {
+			if cancelled && errors.Is(err, context.Canceled) {
 				// filter out errors from FuncRunner.Stop() being called
-				r.err = nil
-			} else if r.err != nil && r.ErrorHandler != nil {
+				r.err.Store(nil)
+			} else if err != nil && r.ErrorHandler != nil {
 				// pass any non-nil error to set handler
-				r.err = r.ErrorHandler(r.err)
+				r.err.Store(r.ErrorHandler(err))
 			}
 
-			r.mu.Unlock()
-
 		// already running
 		case false:
 			close(done)
@@ -93,7 +90,7 @@ func (r *FuncRunner) Go(fn func(ctx context.Context) error) bool {
 
 	// 'fn' returned, check error
 	case <-done:
-		return (r.Err() == nil)
+		return has
 	}
 }
 
@@ -104,10 +101,7 @@ func (r *FuncRunner) Stop() bool {
 
 // Err returns the last-set error value.
 func (r *FuncRunner) Err() error {
-	r.mu.Lock()
-	err := r.err
-	r.mu.Unlock()
-	return err
+	return r.err.Load()
 }
 
 // Run will execute the supplied 'fn' catching any panics. Returns either function-returned error or formatted panic.

vendor/codeberg.org/gruf/go-sched/job.go

@@ -1,6 +1,9 @@
 package sched
 
 import (
+	"reflect"
+	"strconv"
+	"strings"
 	"time"
 
 	"codeberg.org/gruf/go-atomics"
@@ -97,3 +100,19 @@ func (job *Job) Run(now time.Time) {
 	}()
 	job.call(now)
 }
+
+// String provides a debuggable string representation of Job including ID, next time and Timing type.
+func (job *Job) String() string {
+	var buf strings.Builder
+	buf.WriteByte('{')
+	buf.WriteString("id=")
+	buf.WriteString(strconv.FormatUint(job.id, 10))
+	buf.WriteByte(' ')
+	buf.WriteString("next=")
+	buf.WriteString(job.next.Load().Format(time.StampMicro))
+	buf.WriteByte(' ')
+	buf.WriteString("timing=")
+	buf.WriteString(reflect.TypeOf(job.timing).String())
+	buf.WriteByte('}')
+	return buf.String()
+}

vendor/codeberg.org/gruf/go-sched/scheduler.go

@@ -132,7 +132,13 @@ func (sch *Scheduler) run(ctx context.Context) {
 			// Get next job time
 			next := sch.jobs[0].Next()
 
-			if until := next.Sub(now); until <= 0 {
+			// If this job is _just_ about to be ready, we
+			// don't bother sleeping. It's wasted cycles only
+			// sleeping for some obscenely tiny amount of time
+			// we can't guarantee precision for.
+			const precision = time.Millisecond
+
+			if until := next.Sub(now); until <= precision/1e3 {
 				// This job is behind schedule,
 				// set timer to always tick
 				tch = alwaysticks
@@ -155,6 +161,10 @@ func (sch *Scheduler) run(ctx context.Context) {
 
 		// Timer ticked, run scheduled
 		case now := <-tch:
+			if !timerset {
+				// alwaysticks returns zero times
+				now = time.Now()
+			}
 			sch.schedule(now)
 
 		// Received update, handle job/id
@@ -213,7 +223,7 @@ func (sch *Scheduler) schedule(now time.Time) {
 		// Run this job async!
 		go job.Run(now)
 
-		if job.Next().IsZero() {
+		if next.IsZero() {
 			// Zero time, this job is done and can be dropped
 			sch.jobs = append(sch.jobs[:i], sch.jobs[i+1:]...)
 			continue