mirror of https://github.com/docker/cli.git
vendor: golang.org/x/time v0.1.0
The golang.org/x/ projects are now doing tagged releases. full diff: https://github.com/golang/time/compare/1f47c861a9ac...v0.1.0 Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
parent
7b3900145e
commit
57b6ed34cc
|
@ -70,7 +70,7 @@ require (
|
|||
go.etcd.io/etcd/raft/v3 v3.5.2 // indirect
|
||||
golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd // indirect
|
||||
golang.org/x/net v0.0.0-20220906165146-f3363e06e74c // indirect; updated for CVE-2022-27664
|
||||
golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac // indirect
|
||||
golang.org/x/time v0.1.0 // indirect
|
||||
google.golang.org/genproto v0.0.0-20211208223120-3a66f561d7aa // indirect
|
||||
google.golang.org/grpc v1.45.0 // indirect
|
||||
google.golang.org/protobuf v1.27.1 // indirect
|
||||
|
|
|
@ -585,8 +585,8 @@ golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
|
|||
golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
|
||||
golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
|
||||
golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
|
||||
golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac h1:7zkz7BUtwNFFqcowJ+RIgu2MaV/MapERkDIy+mwPyjs=
|
||||
golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
|
||||
golang.org/x/time v0.1.0 h1:xYY+Bajn2a7VBmTM5GikTmnK8ZuX8YgnQCqZpbBNtmA=
|
||||
golang.org/x/time v0.1.0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
|
||||
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
|
||||
golang.org/x/tools v0.0.0-20181030221726-6c7e314b6563/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
|
||||
golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
|
||||
|
|
|
@ -1,3 +0,0 @@
|
|||
# This source code refers to The Go Authors for copyright purposes.
|
||||
# The master list of authors is in the main Go distribution,
|
||||
# visible at http://tip.golang.org/AUTHORS.
|
|
@ -1,3 +0,0 @@
|
|||
# This source code was written by the Go contributors.
|
||||
# The master list of contributors is in the main Go distribution,
|
||||
# visible at http://tip.golang.org/CONTRIBUTORS.
|
|
@ -80,6 +80,19 @@ func (lim *Limiter) Burst() int {
|
|||
return lim.burst
|
||||
}
|
||||
|
||||
// TokensAt returns the number of tokens available at time t.
|
||||
func (lim *Limiter) TokensAt(t time.Time) float64 {
|
||||
lim.mu.Lock()
|
||||
_, _, tokens := lim.advance(t) // does not mutute lim
|
||||
lim.mu.Unlock()
|
||||
return tokens
|
||||
}
|
||||
|
||||
// Tokens returns the number of tokens available now.
|
||||
func (lim *Limiter) Tokens() float64 {
|
||||
return lim.TokensAt(time.Now())
|
||||
}
|
||||
|
||||
// NewLimiter returns a new Limiter that allows events up to rate r and permits
|
||||
// bursts of at most b tokens.
|
||||
func NewLimiter(r Limit, b int) *Limiter {
|
||||
|
@ -89,16 +102,16 @@ func NewLimiter(r Limit, b int) *Limiter {
|
|||
}
|
||||
}
|
||||
|
||||
// Allow is shorthand for AllowN(time.Now(), 1).
|
||||
// Allow reports whether an event may happen now.
|
||||
func (lim *Limiter) Allow() bool {
|
||||
return lim.AllowN(time.Now(), 1)
|
||||
}
|
||||
|
||||
// AllowN reports whether n events may happen at time now.
|
||||
// AllowN reports whether n events may happen at time t.
|
||||
// Use this method if you intend to drop / skip events that exceed the rate limit.
|
||||
// Otherwise use Reserve or Wait.
|
||||
func (lim *Limiter) AllowN(now time.Time, n int) bool {
|
||||
return lim.reserveN(now, n, 0).ok
|
||||
func (lim *Limiter) AllowN(t time.Time, n int) bool {
|
||||
return lim.reserveN(t, n, 0).ok
|
||||
}
|
||||
|
||||
// A Reservation holds information about events that are permitted by a Limiter to happen after a delay.
|
||||
|
@ -125,17 +138,17 @@ func (r *Reservation) Delay() time.Duration {
|
|||
}
|
||||
|
||||
// InfDuration is the duration returned by Delay when a Reservation is not OK.
|
||||
const InfDuration = time.Duration(1<<63 - 1)
|
||||
const InfDuration = time.Duration(math.MaxInt64)
|
||||
|
||||
// DelayFrom returns the duration for which the reservation holder must wait
|
||||
// before taking the reserved action. Zero duration means act immediately.
|
||||
// InfDuration means the limiter cannot grant the tokens requested in this
|
||||
// Reservation within the maximum wait time.
|
||||
func (r *Reservation) DelayFrom(now time.Time) time.Duration {
|
||||
func (r *Reservation) DelayFrom(t time.Time) time.Duration {
|
||||
if !r.ok {
|
||||
return InfDuration
|
||||
}
|
||||
delay := r.timeToAct.Sub(now)
|
||||
delay := r.timeToAct.Sub(t)
|
||||
if delay < 0 {
|
||||
return 0
|
||||
}
|
||||
|
@ -150,7 +163,7 @@ func (r *Reservation) Cancel() {
|
|||
// CancelAt indicates that the reservation holder will not perform the reserved action
|
||||
// and reverses the effects of this Reservation on the rate limit as much as possible,
|
||||
// considering that other reservations may have already been made.
|
||||
func (r *Reservation) CancelAt(now time.Time) {
|
||||
func (r *Reservation) CancelAt(t time.Time) {
|
||||
if !r.ok {
|
||||
return
|
||||
}
|
||||
|
@ -158,7 +171,7 @@ func (r *Reservation) CancelAt(now time.Time) {
|
|||
r.lim.mu.Lock()
|
||||
defer r.lim.mu.Unlock()
|
||||
|
||||
if r.lim.limit == Inf || r.tokens == 0 || r.timeToAct.Before(now) {
|
||||
if r.lim.limit == Inf || r.tokens == 0 || r.timeToAct.Before(t) {
|
||||
return
|
||||
}
|
||||
|
||||
|
@ -170,18 +183,18 @@ func (r *Reservation) CancelAt(now time.Time) {
|
|||
return
|
||||
}
|
||||
// advance time to now
|
||||
now, _, tokens := r.lim.advance(now)
|
||||
t, _, tokens := r.lim.advance(t)
|
||||
// calculate new number of tokens
|
||||
tokens += restoreTokens
|
||||
if burst := float64(r.lim.burst); tokens > burst {
|
||||
tokens = burst
|
||||
}
|
||||
// update state
|
||||
r.lim.last = now
|
||||
r.lim.last = t
|
||||
r.lim.tokens = tokens
|
||||
if r.timeToAct == r.lim.lastEvent {
|
||||
prevEvent := r.timeToAct.Add(r.limit.durationFromTokens(float64(-r.tokens)))
|
||||
if !prevEvent.Before(now) {
|
||||
if !prevEvent.Before(t) {
|
||||
r.lim.lastEvent = prevEvent
|
||||
}
|
||||
}
|
||||
|
@ -196,6 +209,7 @@ func (lim *Limiter) Reserve() *Reservation {
|
|||
// The Limiter takes this Reservation into account when allowing future events.
|
||||
// The returned Reservation’s OK() method returns false if n exceeds the Limiter's burst size.
|
||||
// Usage example:
|
||||
//
|
||||
// r := lim.ReserveN(time.Now(), 1)
|
||||
// if !r.OK() {
|
||||
// // Not allowed to act! Did you remember to set lim.burst to be > 0 ?
|
||||
|
@ -203,11 +217,12 @@ func (lim *Limiter) Reserve() *Reservation {
|
|||
// }
|
||||
// time.Sleep(r.Delay())
|
||||
// Act()
|
||||
//
|
||||
// Use this method if you wish to wait and slow down in accordance with the rate limit without dropping events.
|
||||
// If you need to respect a deadline or cancel the delay, use Wait instead.
|
||||
// To drop or skip events exceeding rate limit, use Allow instead.
|
||||
func (lim *Limiter) ReserveN(now time.Time, n int) *Reservation {
|
||||
r := lim.reserveN(now, n, InfDuration)
|
||||
func (lim *Limiter) ReserveN(t time.Time, n int) *Reservation {
|
||||
r := lim.reserveN(t, n, InfDuration)
|
||||
return &r
|
||||
}
|
||||
|
||||
|
@ -221,6 +236,18 @@ func (lim *Limiter) Wait(ctx context.Context) (err error) {
|
|||
// canceled, or the expected wait time exceeds the Context's Deadline.
|
||||
// The burst limit is ignored if the rate limit is Inf.
|
||||
func (lim *Limiter) WaitN(ctx context.Context, n int) (err error) {
|
||||
// The test code calls lim.wait with a fake timer generator.
|
||||
// This is the real timer generator.
|
||||
newTimer := func(d time.Duration) (<-chan time.Time, func() bool, func()) {
|
||||
timer := time.NewTimer(d)
|
||||
return timer.C, timer.Stop, func() {}
|
||||
}
|
||||
|
||||
return lim.wait(ctx, n, time.Now(), newTimer)
|
||||
}
|
||||
|
||||
// wait is the internal implementation of WaitN.
|
||||
func (lim *Limiter) wait(ctx context.Context, n int, t time.Time, newTimer func(d time.Duration) (<-chan time.Time, func() bool, func())) error {
|
||||
lim.mu.Lock()
|
||||
burst := lim.burst
|
||||
limit := lim.limit
|
||||
|
@ -236,25 +263,25 @@ func (lim *Limiter) WaitN(ctx context.Context, n int) (err error) {
|
|||
default:
|
||||
}
|
||||
// Determine wait limit
|
||||
now := time.Now()
|
||||
waitLimit := InfDuration
|
||||
if deadline, ok := ctx.Deadline(); ok {
|
||||
waitLimit = deadline.Sub(now)
|
||||
waitLimit = deadline.Sub(t)
|
||||
}
|
||||
// Reserve
|
||||
r := lim.reserveN(now, n, waitLimit)
|
||||
r := lim.reserveN(t, n, waitLimit)
|
||||
if !r.ok {
|
||||
return fmt.Errorf("rate: Wait(n=%d) would exceed context deadline", n)
|
||||
}
|
||||
// Wait if necessary
|
||||
delay := r.DelayFrom(now)
|
||||
delay := r.DelayFrom(t)
|
||||
if delay == 0 {
|
||||
return nil
|
||||
}
|
||||
t := time.NewTimer(delay)
|
||||
defer t.Stop()
|
||||
ch, stop, advance := newTimer(delay)
|
||||
defer stop()
|
||||
advance() // only has an effect when testing
|
||||
select {
|
||||
case <-t.C:
|
||||
case <-ch:
|
||||
// We can proceed.
|
||||
return nil
|
||||
case <-ctx.Done():
|
||||
|
@ -273,13 +300,13 @@ func (lim *Limiter) SetLimit(newLimit Limit) {
|
|||
// SetLimitAt sets a new Limit for the limiter. The new Limit, and Burst, may be violated
|
||||
// or underutilized by those which reserved (using Reserve or Wait) but did not yet act
|
||||
// before SetLimitAt was called.
|
||||
func (lim *Limiter) SetLimitAt(now time.Time, newLimit Limit) {
|
||||
func (lim *Limiter) SetLimitAt(t time.Time, newLimit Limit) {
|
||||
lim.mu.Lock()
|
||||
defer lim.mu.Unlock()
|
||||
|
||||
now, _, tokens := lim.advance(now)
|
||||
t, _, tokens := lim.advance(t)
|
||||
|
||||
lim.last = now
|
||||
lim.last = t
|
||||
lim.tokens = tokens
|
||||
lim.limit = newLimit
|
||||
}
|
||||
|
@ -290,13 +317,13 @@ func (lim *Limiter) SetBurst(newBurst int) {
|
|||
}
|
||||
|
||||
// SetBurstAt sets a new burst size for the limiter.
|
||||
func (lim *Limiter) SetBurstAt(now time.Time, newBurst int) {
|
||||
func (lim *Limiter) SetBurstAt(t time.Time, newBurst int) {
|
||||
lim.mu.Lock()
|
||||
defer lim.mu.Unlock()
|
||||
|
||||
now, _, tokens := lim.advance(now)
|
||||
t, _, tokens := lim.advance(t)
|
||||
|
||||
lim.last = now
|
||||
lim.last = t
|
||||
lim.tokens = tokens
|
||||
lim.burst = newBurst
|
||||
}
|
||||
|
@ -304,20 +331,32 @@ func (lim *Limiter) SetBurstAt(now time.Time, newBurst int) {
|
|||
// reserveN is a helper method for AllowN, ReserveN, and WaitN.
|
||||
// maxFutureReserve specifies the maximum reservation wait duration allowed.
|
||||
// reserveN returns Reservation, not *Reservation, to avoid allocation in AllowN and WaitN.
|
||||
func (lim *Limiter) reserveN(now time.Time, n int, maxFutureReserve time.Duration) Reservation {
|
||||
func (lim *Limiter) reserveN(t time.Time, n int, maxFutureReserve time.Duration) Reservation {
|
||||
lim.mu.Lock()
|
||||
defer lim.mu.Unlock()
|
||||
|
||||
if lim.limit == Inf {
|
||||
lim.mu.Unlock()
|
||||
return Reservation{
|
||||
ok: true,
|
||||
lim: lim,
|
||||
tokens: n,
|
||||
timeToAct: now,
|
||||
timeToAct: t,
|
||||
}
|
||||
} else if lim.limit == 0 {
|
||||
var ok bool
|
||||
if lim.burst >= n {
|
||||
ok = true
|
||||
lim.burst -= n
|
||||
}
|
||||
return Reservation{
|
||||
ok: ok,
|
||||
lim: lim,
|
||||
tokens: lim.burst,
|
||||
timeToAct: t,
|
||||
}
|
||||
}
|
||||
|
||||
now, last, tokens := lim.advance(now)
|
||||
t, last, tokens := lim.advance(t)
|
||||
|
||||
// Calculate the remaining number of tokens resulting from the request.
|
||||
tokens -= float64(n)
|
||||
|
@ -339,44 +378,46 @@ func (lim *Limiter) reserveN(now time.Time, n int, maxFutureReserve time.Duratio
|
|||
}
|
||||
if ok {
|
||||
r.tokens = n
|
||||
r.timeToAct = now.Add(waitDuration)
|
||||
r.timeToAct = t.Add(waitDuration)
|
||||
}
|
||||
|
||||
// Update state
|
||||
if ok {
|
||||
lim.last = now
|
||||
lim.last = t
|
||||
lim.tokens = tokens
|
||||
lim.lastEvent = r.timeToAct
|
||||
} else {
|
||||
lim.last = last
|
||||
}
|
||||
|
||||
lim.mu.Unlock()
|
||||
return r
|
||||
}
|
||||
|
||||
// advance calculates and returns an updated state for lim resulting from the passage of time.
|
||||
// lim is not changed.
|
||||
// advance requires that lim.mu is held.
|
||||
func (lim *Limiter) advance(now time.Time) (newNow time.Time, newLast time.Time, newTokens float64) {
|
||||
func (lim *Limiter) advance(t time.Time) (newT time.Time, newLast time.Time, newTokens float64) {
|
||||
last := lim.last
|
||||
if now.Before(last) {
|
||||
last = now
|
||||
if t.Before(last) {
|
||||
last = t
|
||||
}
|
||||
|
||||
// Calculate the new number of tokens, due to time that passed.
|
||||
elapsed := now.Sub(last)
|
||||
elapsed := t.Sub(last)
|
||||
delta := lim.limit.tokensFromDuration(elapsed)
|
||||
tokens := lim.tokens + delta
|
||||
if burst := float64(lim.burst); tokens > burst {
|
||||
tokens = burst
|
||||
}
|
||||
return now, last, tokens
|
||||
return t, last, tokens
|
||||
}
|
||||
|
||||
// durationFromTokens is a unit conversion function from the number of tokens to the duration
|
||||
// of time it takes to accumulate them at a rate of limit tokens per second.
|
||||
func (limit Limit) durationFromTokens(tokens float64) time.Duration {
|
||||
if limit <= 0 {
|
||||
return InfDuration
|
||||
}
|
||||
seconds := tokens / float64(limit)
|
||||
return time.Duration(float64(time.Second) * seconds)
|
||||
}
|
||||
|
@ -384,5 +425,8 @@ func (limit Limit) durationFromTokens(tokens float64) time.Duration {
|
|||
// tokensFromDuration is a unit conversion function from a time duration to the number of tokens
|
||||
// which could be accumulated during that duration at a rate of limit tokens per second.
|
||||
func (limit Limit) tokensFromDuration(d time.Duration) float64 {
|
||||
if limit <= 0 {
|
||||
return 0
|
||||
}
|
||||
return d.Seconds() * float64(limit)
|
||||
}
|
||||
|
|
|
@ -289,7 +289,7 @@ golang.org/x/text/transform
|
|||
golang.org/x/text/unicode/bidi
|
||||
golang.org/x/text/unicode/norm
|
||||
golang.org/x/text/width
|
||||
# golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac
|
||||
# golang.org/x/time v0.1.0
|
||||
## explicit
|
||||
golang.org/x/time/rate
|
||||
# google.golang.org/genproto v0.0.0-20211208223120-3a66f561d7aa
|
||||
|
|
Loading…
Reference in New Issue