rc: move job expire flags to rc to fix initalization problem

See: https://forum.rclone.org/t/rc-rc-job-expire-interval-bug/11188

rclone was ignoring the --rc-job-expire-duration and --rc-job-interval
flags.  This turned out to be an initialization order problem and was
fixed by moving those flags out of global config into rc config.

fs/config.go

@@ -100,8 +100,6 @@ type ConfigInfo struct {
 	ClientKey              string // Client Side Key
 	MultiThreadCutoff      SizeSuffix
 	MultiThreadStreams     int
-	RcJobExpireDuration    time.Duration
-	RcJobExpireInterval    time.Duration
 }
 
 // NewConfig creates a new config with everything set to the default
@@ -136,8 +134,6 @@ func NewConfig() *ConfigInfo {
 	//	c.StatsOneLineDateFormat = "2006/01/02 15:04:05 - "
 	c.MultiThreadCutoff = SizeSuffix(250 * 1024 * 1024)
 	c.MultiThreadStreams = 4
-	c.RcJobExpireDuration = 60 * time.Second
-	c.RcJobExpireInterval = 10 * time.Second
 
 	return c
 }

fs/config/configflags/configflags.go

@@ -103,8 +103,6 @@ func AddFlags(flagSet *pflag.FlagSet) {
 	flags.StringVarP(flagSet, &fs.Config.ClientKey, "client-key", "", fs.Config.ClientKey, "Client SSL private key (PEM) for mutual TLS auth")
 	flags.FVarP(flagSet, &fs.Config.MultiThreadCutoff, "multi-thread-cutoff", "", "Use multi-thread downloads for files above this size.")
 	flags.IntVarP(flagSet, &fs.Config.MultiThreadStreams, "multi-thread-streams", "", fs.Config.MultiThreadStreams, "Max number of streams to use for multi-thread downloads.")
-	flags.DurationVarP(flagSet, &fs.Config.RcJobExpireDuration, "rc-job-expire-duration", "", fs.Config.RcJobExpireDuration, "expire finished async jobs older than this value")
-	flags.DurationVarP(flagSet, &fs.Config.RcJobExpireInterval, "rc-job-expire-interval", "", fs.Config.RcJobExpireInterval, "interval to check for expired async jobs")
 	flags.BoolVarP(flagSet, &fs.Config.UseJSONLog, "use-json-log", "", fs.Config.UseJSONLog, "Use json log format.")
 }
 

fs/rc/jobs/job.go

@@ -35,10 +35,10 @@ type Job struct {
 
 // Jobs describes a collection of running tasks
 type Jobs struct {
-	mu             sync.RWMutex
-	jobs           map[int64]*Job
-	expireInterval time.Duration
-	expireRunning  bool
+	mu            sync.RWMutex
+	jobs          map[int64]*Job
+	opt           *rc.Options
+	expireRunning bool
 }
 
 var (
@@ -49,17 +49,22 @@ var (
 // newJobs makes a new Jobs structure
 func newJobs() *Jobs {
 	return &Jobs{
-		jobs:           map[int64]*Job{},
-		expireInterval: fs.Config.RcJobExpireInterval,
+		jobs: map[int64]*Job{},
+		opt:  &rc.DefaultOpt,
 	}
 }
 
+// SetOpt sets the options when they are known
+func SetOpt(opt *rc.Options) {
+	running.opt = opt
+}
+
 // kickExpire makes sure Expire is running
 func (jobs *Jobs) kickExpire() {
 	jobs.mu.Lock()
 	defer jobs.mu.Unlock()
 	if !jobs.expireRunning {
-		time.AfterFunc(jobs.expireInterval, jobs.Expire)
+		time.AfterFunc(jobs.opt.JobExpireInterval, jobs.Expire)
 		jobs.expireRunning = true
 	}
 }
@@ -71,13 +76,13 @@ func (jobs *Jobs) Expire() {
 	now := time.Now()
 	for ID, job := range jobs.jobs {
 		job.mu.Lock()
-		if job.Finished && now.Sub(job.EndTime) > fs.Config.RcJobExpireDuration {
+		if job.Finished && now.Sub(job.EndTime) > jobs.opt.JobExpireDuration {
 			delete(jobs.jobs, ID)
 		}
 		job.mu.Unlock()
 	}
 	if len(jobs.jobs) != 0 {
-		time.AfterFunc(jobs.expireInterval, jobs.Expire)
+		time.AfterFunc(jobs.opt.JobExpireInterval, jobs.Expire)
 		jobs.expireRunning = true
 	} else {
 		jobs.expireRunning = false

fs/rc/jobs/job_test.go

@@ -7,8 +7,8 @@ import (
 	"time"
 
 	"github.com/pkg/errors"
-	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/rc"
+	"github.com/rclone/rclone/fs/rc/rcflags"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -20,7 +20,7 @@ func TestNewJobs(t *testing.T) {
 
 func TestJobsKickExpire(t *testing.T) {
 	jobs := newJobs()
-	jobs.expireInterval = time.Millisecond
+	jobs.opt.JobExpireInterval = time.Millisecond
 	assert.Equal(t, false, jobs.expireRunning)
 	jobs.kickExpire()
 	jobs.mu.Lock()
@@ -35,7 +35,7 @@ func TestJobsKickExpire(t *testing.T) {
 func TestJobsExpire(t *testing.T) {
 	wait := make(chan struct{})
 	jobs := newJobs()
-	jobs.expireInterval = time.Millisecond
+	jobs.opt.JobExpireInterval = time.Millisecond
 	assert.Equal(t, false, jobs.expireRunning)
 	job := jobs.NewAsyncJob(func(ctx context.Context, in rc.Params) (rc.Params, error) {
 		defer close(wait)
@@ -47,7 +47,7 @@ func TestJobsExpire(t *testing.T) {
 	assert.Equal(t, 1, len(jobs.jobs))
 	jobs.mu.Lock()
 	job.mu.Lock()
-	job.EndTime = time.Now().Add(-fs.Config.RcJobExpireDuration - 60*time.Second)
+	job.EndTime = time.Now().Add(-rcflags.Opt.JobExpireDuration - 60*time.Second)
 	assert.Equal(t, true, jobs.expireRunning)
 	job.mu.Unlock()
 	jobs.mu.Unlock()

fs/rc/rc.go

@@ -11,6 +11,7 @@ import (
 	"encoding/json"
 	"io"
 	_ "net/http/pprof" // install the pprof http handlers
+	"time"
 
 	"github.com/rclone/rclone/cmd/serve/httplib"
 )
@@ -26,13 +27,16 @@ type Options struct {
 	WebGUIUpdate             bool   // set to download new update
 	WebGUIFetchURL           string // set the default url for fetching webgui
 	AccessControlAllowOrigin string // set the access control for CORS configuration
-
+	JobExpireDuration        time.Duration
+	JobExpireInterval        time.Duration
 }
 
 // DefaultOpt is the default values used for Options
 var DefaultOpt = Options{
-	HTTPOptions: httplib.DefaultOpt,
-	Enabled:     false,
+	HTTPOptions:       httplib.DefaultOpt,
+	Enabled:           false,
+	JobExpireDuration: 60 * time.Second,
+	JobExpireInterval: 10 * time.Second,
 }
 
 func init() {

fs/rc/rcflags/rcflags.go

@@ -24,5 +24,7 @@ func AddFlags(flagSet *pflag.FlagSet) {
 	flags.BoolVarP(flagSet, &Opt.WebGUIUpdate, "rc-web-gui-update", "", false, "Update / Force update to latest version of web gui")
 	flags.StringVarP(flagSet, &Opt.WebGUIFetchURL, "rc-web-fetch-url", "", "https://api.github.com/repos/rclone/rclone-webui-react/releases/latest", "URL to fetch the releases for webgui.")
 	flags.StringVarP(flagSet, &Opt.AccessControlAllowOrigin, "rc-allow-origin", "", "", "Set the allowed origin for CORS.")
+	flags.DurationVarP(flagSet, &Opt.JobExpireDuration, "rc-job-expire-duration", "", Opt.JobExpireDuration, "expire finished async jobs older than this value")
+	flags.DurationVarP(flagSet, &Opt.JobExpireInterval, "rc-job-expire-interval", "", Opt.JobExpireInterval, "interval to check for expired async jobs")
 	httpflags.AddFlagsPrefix(flagSet, "rc-", &Opt.HTTPOptions)
 }

fs/rc/rcserver/rcserver.go

@@ -30,6 +30,7 @@ import (
 //
 // If the server wasn't configured the *Server returned may be nil
 func Start(opt *rc.Options) (*Server, error) {
+	jobs.SetOpt(opt) // set the defaults for jobs
 	if opt.Enabled {
 		// Serve on the DefaultServeMux so can have global registrations appear
 		s := newServer(opt, http.DefaultServeMux)