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