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update vendor & module

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This commit is contained in:
astaxie
2018-11-28 16:05:15 +08:00
parent 6282747f6d
commit 10729a1fc5
569 changed files with 70 additions and 340522 deletions
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3
vendor/golang.org/x/crypto/AUTHORS generated vendored
View File

@@ -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 https://tip.golang.org/AUTHORS.

3
vendor/golang.org/x/crypto/CONTRIBUTORS generated vendored
View File

@@ -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 https://tip.golang.org/CONTRIBUTORS.

9
vendor/golang.org/x/crypto/acme/acme.go generated vendored
View File

@@ -46,9 +46,8 @@ const (
// ALPNProto is the ALPN protocol name used by a CA server when validating
// tls-alpn-01 challenges.
//
// Package users must ensure their servers can negotiate the ACME ALPN in
// order for tls-alpn-01 challenge verifications to succeed.
// See the crypto/tls package's Config.NextProtos field.
// Package users must ensure their servers can negotiate the ACME ALPN
// in order for tls-alpn-01 challenge verifications to succeed.
ALPNProto = "acme-tls/1"
)
@@ -77,10 +76,6 @@ const (
type Client struct {
// Key is the account key used to register with a CA and sign requests.
// Key.Public() must return a *rsa.PublicKey or *ecdsa.PublicKey.
//
// The following algorithms are supported:
// RS256, ES256, ES384 and ES512.
// See RFC7518 for more details about the algorithms.
Key crypto.Signer
// HTTPClient optionally specifies an HTTP client to use

34
vendor/golang.org/x/crypto/acme/autocert/autocert.go generated vendored
View File

@@ -44,7 +44,7 @@ var createCertRetryAfter = time.Minute
var pseudoRand *lockedMathRand
func init() {
src := mathrand.NewSource(time.Now().UnixNano())
src := mathrand.NewSource(timeNow().UnixNano())
pseudoRand = &lockedMathRand{rnd: mathrand.New(src)}
}
@@ -69,7 +69,7 @@ func HostWhitelist(hosts ...string) HostPolicy {
}
return func(_ context.Context, host string) error {
if !whitelist[host] {
return fmt.Errorf("acme/autocert: host %q not configured in HostWhitelist", host)
return errors.New("acme/autocert: host not configured")
}
return nil
}
@@ -183,9 +183,6 @@ type Manager struct {
// for tls-alpn.
// The entries are stored for the duration of the authorization flow.
certTokens map[string]*tls.Certificate
// nowFunc, if not nil, returns the current time. This may be set for
// testing purposes.
nowFunc func() time.Time
}
// certKey is the key by which certificates are tracked in state, renewal and cache.
@@ -226,11 +223,6 @@ func (m *Manager) TLSConfig() *tls.Config {
// a new cert. A non-nil error returned from m.HostPolicy halts TLS negotiation.
// The error is propagated back to the caller of GetCertificate and is user-visible.
// This does not affect cached certs. See HostPolicy field description for more details.
//
// If GetCertificate is used directly, instead of via Manager.TLSConfig, package users will
// also have to add acme.ALPNProto to NextProtos for tls-alpn-01, or use HTTPHandler
// for http-01. (The tls-sni-* challenges have been deprecated by popular ACME providers
// due to security issues in the ecosystem.)
func (m *Manager) GetCertificate(hello *tls.ClientHelloInfo) (*tls.Certificate, error) {
if m.Prompt == nil {
return nil, errors.New("acme/autocert: Manager.Prompt not set")
@@ -364,8 +356,8 @@ func supportsECDSA(hello *tls.ClientHelloInfo) bool {
// Because the fallback handler is run with unencrypted port 80 requests,
// the fallback should not serve TLS-only requests.
//
// If HTTPHandler is never called, the Manager will only use the "tls-alpn-01"
// challenge for domain verification.
// If HTTPHandler is never called, the Manager will only use TLS SNI
// challenges for domain verification.
func (m *Manager) HTTPHandler(fallback http.Handler) http.Handler {
m.tokensMu.Lock()
defer m.tokensMu.Unlock()
@@ -483,7 +475,7 @@ func (m *Manager) cacheGet(ctx context.Context, ck certKey) (*tls.Certificate, e
}
// verify and create TLS cert
leaf, err := validCert(ck, pubDER, privKey, m.now())
leaf, err := validCert(ck, pubDER, privKey)
if err != nil {
return nil, ErrCacheMiss
}
@@ -578,7 +570,7 @@ func (m *Manager) createCert(ctx context.Context, ck certKey) (*tls.Certificate,
if !ok {
return
}
if _, err := validCert(ck, s.cert, s.key, m.now()); err == nil {
if _, err := validCert(ck, s.cert, s.key); err == nil {
return
}
delete(m.state, ck)
@@ -647,7 +639,7 @@ func (m *Manager) authorizedCert(ctx context.Context, key crypto.Signer, ck cert
if err != nil {
return nil, nil, err
}
leaf, err = validCert(ck, der, key, m.now())
leaf, err = validCert(ck, der, key)
if err != nil {
return nil, nil, err
}
@@ -991,13 +983,6 @@ func (m *Manager) renewBefore() time.Duration {
return 720 * time.Hour // 30 days
}
func (m *Manager) now() time.Time {
if m.nowFunc != nil {
return m.nowFunc()
}
return time.Now()
}
// certState is ready when its mutex is unlocked for reading.
type certState struct {
sync.RWMutex
@@ -1064,7 +1049,7 @@ func parsePrivateKey(der []byte) (crypto.Signer, error) {
// are valid. It doesn't do any revocation checking.
//
// The returned value is the verified leaf cert.
func validCert(ck certKey, der [][]byte, key crypto.Signer, now time.Time) (leaf *x509.Certificate, err error) {
func validCert(ck certKey, der [][]byte, key crypto.Signer) (leaf *x509.Certificate, err error) {
// parse public part(s)
var n int
for _, b := range der {
@@ -1081,6 +1066,7 @@ func validCert(ck certKey, der [][]byte, key crypto.Signer, now time.Time) (leaf
}
// verify the leaf is not expired and matches the domain name
leaf = x509Cert[0]
now := timeNow()
if now.Before(leaf.NotBefore) {
return nil, errors.New("acme/autocert: certificate is not valid yet")
}
@@ -1134,6 +1120,8 @@ func (r *lockedMathRand) int63n(max int64) int64 {
// For easier testing.
var (
timeNow = time.Now
// Called when a state is removed.
testDidRemoveState = func(certKey) {}
)

2
vendor/golang.org/x/crypto/acme/autocert/renewal.go generated vendored
View File

@@ -128,7 +128,7 @@ func (dr *domainRenewal) do(ctx context.Context) (time.Duration, error) {
}
func (dr *domainRenewal) next(expiry time.Time) time.Duration {
d := expiry.Sub(dr.m.now()) - dr.m.renewBefore()
d := expiry.Sub(timeNow()) - dr.m.renewBefore()
// add a bit of randomness to renew deadline
n := pseudoRand.int63n(int64(renewJitter))
d -= time.Duration(n)

29
vendor/golang.org/x/crypto/acme/jws.go generated vendored
View File

@@ -25,7 +25,7 @@ func jwsEncodeJSON(claimset interface{}, key crypto.Signer, nonce string) ([]byt
if err != nil {
return nil, err
}
alg, sha := jwsHasher(key.Public())
alg, sha := jwsHasher(key)
if alg == "" || !sha.Available() {
return nil, ErrUnsupportedKey
}
@@ -97,16 +97,13 @@ func jwkEncode(pub crypto.PublicKey) (string, error) {
}
// jwsSign signs the digest using the given key.
// The hash is unused for ECDSA keys.
//
// Note: non-stdlib crypto.Signer implementations are expected to return
// the signature in the format as specified in RFC7518.
// See https://tools.ietf.org/html/rfc7518 for more details.
// It returns ErrUnsupportedKey if the key type is unknown.
// The hash is used only for RSA keys.
func jwsSign(key crypto.Signer, hash crypto.Hash, digest []byte) ([]byte, error) {
if key, ok := key.(*ecdsa.PrivateKey); ok {
// The key.Sign method of ecdsa returns ASN1-encoded signature.
// So, we use the package Sign function instead
// to get R and S values directly and format the result accordingly.
switch key := key.(type) {
case *rsa.PrivateKey:
return key.Sign(rand.Reader, digest, hash)
case *ecdsa.PrivateKey:
r, s, err := ecdsa.Sign(rand.Reader, key, digest)
if err != nil {
return nil, err
@@ -121,18 +118,18 @@ func jwsSign(key crypto.Signer, hash crypto.Hash, digest []byte) ([]byte, error)
copy(sig[size*2-len(sb):], sb)
return sig, nil
}
return key.Sign(rand.Reader, digest, hash)
return nil, ErrUnsupportedKey
}
// jwsHasher indicates suitable JWS algorithm name and a hash function
// to use for signing a digest with the provided key.
// It returns ("", 0) if the key is not supported.
func jwsHasher(pub crypto.PublicKey) (string, crypto.Hash) {
switch pub := pub.(type) {
case *rsa.PublicKey:
func jwsHasher(key crypto.Signer) (string, crypto.Hash) {
switch key := key.(type) {
case *rsa.PrivateKey:
return "RS256", crypto.SHA256
case *ecdsa.PublicKey:
switch pub.Params().Name {
case *ecdsa.PrivateKey:
switch key.Params().Name {
case "P-256":
return "ES256", crypto.SHA256
case "P-384":

3
vendor/golang.org/x/net/AUTHORS generated vendored
View File

@@ -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.

3
vendor/golang.org/x/net/CONTRIBUTORS generated vendored
View File

@@ -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.

27
vendor/golang.org/x/net/LICENSE generated vendored
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@@ -1,27 +0,0 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

22
vendor/golang.org/x/net/PATENTS generated vendored
View File

@@ -1,22 +0,0 @@
Additional IP Rights Grant (Patents)
"This implementation" means the copyrightable works distributed by
Google as part of the Go project.
Google hereby grants to You a perpetual, worldwide, non-exclusive,
no-charge, royalty-free, irrevocable (except as stated in this section)
patent license to make, have made, use, offer to sell, sell, import,
transfer and otherwise run, modify and propagate the contents of this
implementation of Go, where such license applies only to those patent
claims, both currently owned or controlled by Google and acquired in
the future, licensable by Google that are necessarily infringed by this
implementation of Go. This grant does not include claims that would be
infringed only as a consequence of further modification of this
implementation. If you or your agent or exclusive licensee institute or
order or agree to the institution of patent litigation against any
entity (including a cross-claim or counterclaim in a lawsuit) alleging
that this implementation of Go or any code incorporated within this
implementation of Go constitutes direct or contributory patent
infringement, or inducement of patent infringement, then any patent
rights granted to you under this License for this implementation of Go
shall terminate as of the date such litigation is filed.

56
vendor/golang.org/x/net/context/context.go generated vendored
View File

@@ -1,56 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package context defines the Context type, which carries deadlines,
// cancelation signals, and other request-scoped values across API boundaries
// and between processes.
// As of Go 1.7 this package is available in the standard library under the
// name context. https://golang.org/pkg/context.
//
// Incoming requests to a server should create a Context, and outgoing calls to
// servers should accept a Context. The chain of function calls between must
// propagate the Context, optionally replacing it with a modified copy created
// using WithDeadline, WithTimeout, WithCancel, or WithValue.
//
// Programs that use Contexts should follow these rules to keep interfaces
// consistent across packages and enable static analysis tools to check context
// propagation:
//
// Do not store Contexts inside a struct type; instead, pass a Context
// explicitly to each function that needs it. The Context should be the first
// parameter, typically named ctx:
//
// func DoSomething(ctx context.Context, arg Arg) error {
// // ... use ctx ...
// }
//
// Do not pass a nil Context, even if a function permits it. Pass context.TODO
// if you are unsure about which Context to use.
//
// Use context Values only for request-scoped data that transits processes and
// APIs, not for passing optional parameters to functions.
//
// The same Context may be passed to functions running in different goroutines;
// Contexts are safe for simultaneous use by multiple goroutines.
//
// See http://blog.golang.org/context for example code for a server that uses
// Contexts.
package context // import "golang.org/x/net/context"
// Background returns a non-nil, empty Context. It is never canceled, has no
// values, and has no deadline. It is typically used by the main function,
// initialization, and tests, and as the top-level Context for incoming
// requests.
func Background() Context {
return background
}
// TODO returns a non-nil, empty Context. Code should use context.TODO when
// it's unclear which Context to use or it is not yet available (because the
// surrounding function has not yet been extended to accept a Context
// parameter). TODO is recognized by static analysis tools that determine
// whether Contexts are propagated correctly in a program.
func TODO() Context {
return todo
}

72
vendor/golang.org/x/net/context/go17.go generated vendored
View File

@@ -1,72 +0,0 @@
// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build go1.7
package context
import (
"context" // standard library's context, as of Go 1.7
"time"
)
var (
todo = context.TODO()
background = context.Background()
)
// Canceled is the error returned by Context.Err when the context is canceled.
var Canceled = context.Canceled
// DeadlineExceeded is the error returned by Context.Err when the context's
// deadline passes.
var DeadlineExceeded = context.DeadlineExceeded
// WithCancel returns a copy of parent with a new Done channel. The returned
// context's Done channel is closed when the returned cancel function is called
// or when the parent context's Done channel is closed, whichever happens first.
//
// Canceling this context releases resources associated with it, so code should
// call cancel as soon as the operations running in this Context complete.
func WithCancel(parent Context) (ctx Context, cancel CancelFunc) {
ctx, f := context.WithCancel(parent)
return ctx, CancelFunc(f)
}
// WithDeadline returns a copy of the parent context with the deadline adjusted
// to be no later than d. If the parent's deadline is already earlier than d,
// WithDeadline(parent, d) is semantically equivalent to parent. The returned
// context's Done channel is closed when the deadline expires, when the returned
// cancel function is called, or when the parent context's Done channel is
// closed, whichever happens first.
//
// Canceling this context releases resources associated with it, so code should
// call cancel as soon as the operations running in this Context complete.
func WithDeadline(parent Context, deadline time.Time) (Context, CancelFunc) {
ctx, f := context.WithDeadline(parent, deadline)
return ctx, CancelFunc(f)
}
// WithTimeout returns WithDeadline(parent, time.Now().Add(timeout)).
//
// Canceling this context releases resources associated with it, so code should
// call cancel as soon as the operations running in this Context complete:
//
// func slowOperationWithTimeout(ctx context.Context) (Result, error) {
// ctx, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
// defer cancel() // releases resources if slowOperation completes before timeout elapses
// return slowOperation(ctx)
// }
func WithTimeout(parent Context, timeout time.Duration) (Context, CancelFunc) {
return WithDeadline(parent, time.Now().Add(timeout))
}
// WithValue returns a copy of parent in which the value associated with key is
// val.
//
// Use context Values only for request-scoped data that transits processes and
// APIs, not for passing optional parameters to functions.
func WithValue(parent Context, key interface{}, val interface{}) Context {
return context.WithValue(parent, key, val)
}

20
vendor/golang.org/x/net/context/go19.go generated vendored
View File

@@ -1,20 +0,0 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build go1.9
package context
import "context" // standard library's context, as of Go 1.7
// A Context carries a deadline, a cancelation signal, and other values across
// API boundaries.
//
// Context's methods may be called by multiple goroutines simultaneously.
type Context = context.Context
// A CancelFunc tells an operation to abandon its work.
// A CancelFunc does not wait for the work to stop.
// After the first call, subsequent calls to a CancelFunc do nothing.
type CancelFunc = context.CancelFunc

300
vendor/golang.org/x/net/context/pre_go17.go generated vendored
View File

@@ -1,300 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !go1.7
package context
import (
"errors"
"fmt"
"sync"
"time"
)
// An emptyCtx is never canceled, has no values, and has no deadline. It is not
// struct{}, since vars of this type must have distinct addresses.
type emptyCtx int
func (*emptyCtx) Deadline() (deadline time.Time, ok bool) {
return
}
func (*emptyCtx) Done() <-chan struct{} {
return nil
}
func (*emptyCtx) Err() error {
return nil
}
func (*emptyCtx) Value(key interface{}) interface{} {
return nil
}
func (e *emptyCtx) String() string {
switch e {
case background:
return "context.Background"
case todo:
return "context.TODO"
}
return "unknown empty Context"
}
var (
background = new(emptyCtx)
todo = new(emptyCtx)
)
// Canceled is the error returned by Context.Err when the context is canceled.
var Canceled = errors.New("context canceled")
// DeadlineExceeded is the error returned by Context.Err when the context's
// deadline passes.
var DeadlineExceeded = errors.New("context deadline exceeded")
// WithCancel returns a copy of parent with a new Done channel. The returned
// context's Done channel is closed when the returned cancel function is called
// or when the parent context's Done channel is closed, whichever happens first.
//
// Canceling this context releases resources associated with it, so code should
// call cancel as soon as the operations running in this Context complete.
func WithCancel(parent Context) (ctx Context, cancel CancelFunc) {
c := newCancelCtx(parent)
propagateCancel(parent, c)
return c, func() { c.cancel(true, Canceled) }
}
// newCancelCtx returns an initialized cancelCtx.
func newCancelCtx(parent Context) *cancelCtx {
return &cancelCtx{
Context: parent,
done: make(chan struct{}),
}
}
// propagateCancel arranges for child to be canceled when parent is.
func propagateCancel(parent Context, child canceler) {
if parent.Done() == nil {
return // parent is never canceled
}
if p, ok := parentCancelCtx(parent); ok {
p.mu.Lock()
if p.err != nil {
// parent has already been canceled
child.cancel(false, p.err)
} else {
if p.children == nil {
p.children = make(map[canceler]bool)
}
p.children[child] = true
}
p.mu.Unlock()
} else {
go func() {
select {
case <-parent.Done():
child.cancel(false, parent.Err())
case <-child.Done():
}
}()
}
}
// parentCancelCtx follows a chain of parent references until it finds a
// *cancelCtx. This function understands how each of the concrete types in this
// package represents its parent.
func parentCancelCtx(parent Context) (*cancelCtx, bool) {
for {
switch c := parent.(type) {
case *cancelCtx:
return c, true
case *timerCtx:
return c.cancelCtx, true
case *valueCtx:
parent = c.Context
default:
return nil, false
}
}
}
// removeChild removes a context from its parent.
func removeChild(parent Context, child canceler) {
p, ok := parentCancelCtx(parent)
if !ok {
return
}
p.mu.Lock()
if p.children != nil {
delete(p.children, child)
}
p.mu.Unlock()
}
// A canceler is a context type that can be canceled directly. The
// implementations are *cancelCtx and *timerCtx.
type canceler interface {
cancel(removeFromParent bool, err error)
Done() <-chan struct{}
}
// A cancelCtx can be canceled. When canceled, it also cancels any children
// that implement canceler.
type cancelCtx struct {
Context
done chan struct{} // closed by the first cancel call.
mu sync.Mutex
children map[canceler]bool // set to nil by the first cancel call
err error // set to non-nil by the first cancel call
}
func (c *cancelCtx) Done() <-chan struct{} {
return c.done
}
func (c *cancelCtx) Err() error {
c.mu.Lock()
defer c.mu.Unlock()
return c.err
}
func (c *cancelCtx) String() string {
return fmt.Sprintf("%v.WithCancel", c.Context)
}
// cancel closes c.done, cancels each of c's children, and, if
// removeFromParent is true, removes c from its parent's children.
func (c *cancelCtx) cancel(removeFromParent bool, err error) {
if err == nil {
panic("context: internal error: missing cancel error")
}
c.mu.Lock()
if c.err != nil {
c.mu.Unlock()
return // already canceled
}
c.err = err
close(c.done)
for child := range c.children {
// NOTE: acquiring the child's lock while holding parent's lock.
child.cancel(false, err)
}
c.children = nil
c.mu.Unlock()
if removeFromParent {
removeChild(c.Context, c)
}
}
// WithDeadline returns a copy of the parent context with the deadline adjusted
// to be no later than d. If the parent's deadline is already earlier than d,
// WithDeadline(parent, d) is semantically equivalent to parent. The returned
// context's Done channel is closed when the deadline expires, when the returned
// cancel function is called, or when the parent context's Done channel is
// closed, whichever happens first.
//
// Canceling this context releases resources associated with it, so code should
// call cancel as soon as the operations running in this Context complete.
func WithDeadline(parent Context, deadline time.Time) (Context, CancelFunc) {
if cur, ok := parent.Deadline(); ok && cur.Before(deadline) {
// The current deadline is already sooner than the new one.
return WithCancel(parent)
}
c := &timerCtx{
cancelCtx: newCancelCtx(parent),
deadline: deadline,
}
propagateCancel(parent, c)
d := deadline.Sub(time.Now())
if d <= 0 {
c.cancel(true, DeadlineExceeded) // deadline has already passed
return c, func() { c.cancel(true, Canceled) }
}
c.mu.Lock()
defer c.mu.Unlock()
if c.err == nil {
c.timer = time.AfterFunc(d, func() {
c.cancel(true, DeadlineExceeded)
})
}
return c, func() { c.cancel(true, Canceled) }
}
// A timerCtx carries a timer and a deadline. It embeds a cancelCtx to
// implement Done and Err. It implements cancel by stopping its timer then
// delegating to cancelCtx.cancel.
type timerCtx struct {
*cancelCtx
timer *time.Timer // Under cancelCtx.mu.
deadline time.Time
}
func (c *timerCtx) Deadline() (deadline time.Time, ok bool) {
return c.deadline, true
}
func (c *timerCtx) String() string {
return fmt.Sprintf("%v.WithDeadline(%s [%s])", c.cancelCtx.Context, c.deadline, c.deadline.Sub(time.Now()))
}
func (c *timerCtx) cancel(removeFromParent bool, err error) {
c.cancelCtx.cancel(false, err)
if removeFromParent {
// Remove this timerCtx from its parent cancelCtx's children.
removeChild(c.cancelCtx.Context, c)
}
c.mu.Lock()
if c.timer != nil {
c.timer.Stop()
c.timer = nil
}
c.mu.Unlock()
}
// WithTimeout returns WithDeadline(parent, time.Now().Add(timeout)).
//
// Canceling this context releases resources associated with it, so code should
// call cancel as soon as the operations running in this Context complete:
//
// func slowOperationWithTimeout(ctx context.Context) (Result, error) {
// ctx, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
// defer cancel() // releases resources if slowOperation completes before timeout elapses
// return slowOperation(ctx)
// }
func WithTimeout(parent Context, timeout time.Duration) (Context, CancelFunc) {
return WithDeadline(parent, time.Now().Add(timeout))
}
// WithValue returns a copy of parent in which the value associated with key is
// val.
//
// Use context Values only for request-scoped data that transits processes and
// APIs, not for passing optional parameters to functions.
func WithValue(parent Context, key interface{}, val interface{}) Context {
return &valueCtx{parent, key, val}
}
// A valueCtx carries a key-value pair. It implements Value for that key and
// delegates all other calls to the embedded Context.
type valueCtx struct {
Context
key, val interface{}
}
func (c *valueCtx) String() string {
return fmt.Sprintf("%v.WithValue(%#v, %#v)", c.Context, c.key, c.val)
}
func (c *valueCtx) Value(key interface{}) interface{} {
if c.key == key {
return c.val
}
return c.Context.Value(key)
}

109
vendor/golang.org/x/net/context/pre_go19.go generated vendored
View File

@@ -1,109 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !go1.9
package context
import "time"
// A Context carries a deadline, a cancelation signal, and other values across
// API boundaries.
//
// Context's methods may be called by multiple goroutines simultaneously.
type Context interface {
// Deadline returns the time when work done on behalf of this context
// should be canceled. Deadline returns ok==false when no deadline is
// set. Successive calls to Deadline return the same results.
Deadline() (deadline time.Time, ok bool)
// Done returns a channel that's closed when work done on behalf of this
// context should be canceled. Done may return nil if this context can
// never be canceled. Successive calls to Done return the same value.
//
// WithCancel arranges for Done to be closed when cancel is called;
// WithDeadline arranges for Done to be closed when the deadline
// expires; WithTimeout arranges for Done to be closed when the timeout
// elapses.
//
// Done is provided for use in select statements:
//
// // Stream generates values with DoSomething and sends them to out
// // until DoSomething returns an error or ctx.Done is closed.
// func Stream(ctx context.Context, out chan<- Value) error {
// for {
// v, err := DoSomething(ctx)
// if err != nil {
// return err
// }
// select {
// case <-ctx.Done():
// return ctx.Err()
// case out <- v:
// }
// }
// }
//
// See http://blog.golang.org/pipelines for more examples of how to use
// a Done channel for cancelation.
Done() <-chan struct{}
// Err returns a non-nil error value after Done is closed. Err returns
// Canceled if the context was canceled or DeadlineExceeded if the
// context's deadline passed. No other values for Err are defined.
// After Done is closed, successive calls to Err return the same value.
Err() error
// Value returns the value associated with this context for key, or nil
// if no value is associated with key. Successive calls to Value with
// the same key returns the same result.
//
// Use context values only for request-scoped data that transits
// processes and API boundaries, not for passing optional parameters to
// functions.
//
// A key identifies a specific value in a Context. Functions that wish
// to store values in Context typically allocate a key in a global
// variable then use that key as the argument to context.WithValue and
// Context.Value. A key can be any type that supports equality;
// packages should define keys as an unexported type to avoid
// collisions.
//
// Packages that define a Context key should provide type-safe accessors
// for the values stores using that key:
//
// // Package user defines a User type that's stored in Contexts.
// package user
//
// import "golang.org/x/net/context"
//
// // User is the type of value stored in the Contexts.
// type User struct {...}
//
// // key is an unexported type for keys defined in this package.
// // This prevents collisions with keys defined in other packages.
// type key int
//
// // userKey is the key for user.User values in Contexts. It is
// // unexported; clients use user.NewContext and user.FromContext
// // instead of using this key directly.
// var userKey key = 0
//
// // NewContext returns a new Context that carries value u.
// func NewContext(ctx context.Context, u *User) context.Context {
// return context.WithValue(ctx, userKey, u)
// }
//
// // FromContext returns the User value stored in ctx, if any.
// func FromContext(ctx context.Context) (*User, bool) {
// u, ok := ctx.Value(userKey).(*User)
// return u, ok
// }
Value(key interface{}) interface{}
}
// A CancelFunc tells an operation to abandon its work.
// A CancelFunc does not wait for the work to stop.
// After the first call, subsequent calls to a CancelFunc do nothing.
type CancelFunc func()