mirror of
https://github.com/Luzifer/elb-instance-status.git
synced 2024-12-23 03:11:20 +00:00
refresh godeps
This commit is contained in:
parent
0058936b56
commit
17e3b6b599
6 changed files with 533 additions and 4 deletions
12
Godeps/Godeps.json
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12
Godeps/Godeps.json
generated
|
@ -1,7 +1,7 @@
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{
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{
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"ImportPath": "github.com/Luzifer/elb-instance-status",
|
"ImportPath": "github.com/Jimdo/elb-instance-status",
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"GoVersion": "go1.6",
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"GoVersion": "go1.6",
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"GodepVersion": "v62",
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"GodepVersion": "v74",
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"Deps": [
|
"Deps": [
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{
|
{
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"ImportPath": "bitbucket.org/ww/goautoneg",
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"ImportPath": "bitbucket.org/ww/goautoneg",
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@ -10,8 +10,8 @@
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},
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},
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{
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{
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"ImportPath": "github.com/Luzifer/rconfig",
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"ImportPath": "github.com/Luzifer/rconfig",
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"Comment": "v1.0.3-2-g2677653",
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"Comment": "v1.1.0",
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"Rev": "26776536e61487fdffbd3ce87f827177a5903f98"
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"Rev": "c27bd3a64b5b19556914d9fec69922cf3852d585"
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},
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},
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{
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{
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"ImportPath": "github.com/beorn7/perks/quantile",
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"ImportPath": "github.com/beorn7/perks/quantile",
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@ -64,6 +64,10 @@
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"ImportPath": "github.com/spf13/pflag",
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"ImportPath": "github.com/spf13/pflag",
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"Rev": "b084184666e02084b8ccb9b704bf0d79c466eb1d"
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"Rev": "b084184666e02084b8ccb9b704bf0d79c466eb1d"
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},
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},
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{
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"ImportPath": "golang.org/x/net/context",
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"Rev": "fa33dc7b893a6db61a44637ced689a85ee5208c4"
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},
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{
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{
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"ImportPath": "gopkg.in/yaml.v2",
|
"ImportPath": "gopkg.in/yaml.v2",
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"Rev": "53feefa2559fb8dfa8d81baad31be332c97d6c77"
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"Rev": "53feefa2559fb8dfa8d81baad31be332c97d6c77"
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5
vendor/github.com/Luzifer/rconfig/History.md
generated
vendored
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5
vendor/github.com/Luzifer/rconfig/History.md
generated
vendored
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@ -0,0 +1,5 @@
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# 1.1.0 / 2016-06-28
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|
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* Support time.Duration config parameters
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* Added goreportcard badge
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* Added testcase for using bool with ENV and default
|
24
vendor/github.com/Luzifer/rconfig/config.go
generated
vendored
24
vendor/github.com/Luzifer/rconfig/config.go
generated
vendored
|
@ -10,6 +10,7 @@ import (
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"reflect"
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"reflect"
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"strconv"
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"strconv"
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"strings"
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"strings"
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"time"
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|
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"github.com/spf13/pflag"
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"github.com/spf13/pflag"
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)
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)
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@ -100,6 +101,29 @@ func execTags(in interface{}, fs *pflag.FlagSet) error {
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value = envDefault(typeField.Tag.Get("env"), value)
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value = envDefault(typeField.Tag.Get("env"), value)
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parts := strings.Split(typeField.Tag.Get("flag"), ",")
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parts := strings.Split(typeField.Tag.Get("flag"), ",")
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switch typeField.Type {
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case reflect.TypeOf(time.Duration(0)):
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|
v, err := time.ParseDuration(value)
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|
if err != nil {
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if value == "" {
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v = time.Duration(0)
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} else {
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return err
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}
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}
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if typeField.Tag.Get("flag") != "" {
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|
if len(parts) == 1 {
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fs.DurationVar(valField.Addr().Interface().(*time.Duration), parts[0], v, typeField.Tag.Get("description"))
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|
} else {
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fs.DurationVarP(valField.Addr().Interface().(*time.Duration), parts[0], parts[1], v, typeField.Tag.Get("description"))
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|
}
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|
} else {
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|
valField.Set(reflect.ValueOf(v))
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|
}
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|
continue
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|
}
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|
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switch typeField.Type.Kind() {
|
switch typeField.Type.Kind() {
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case reflect.String:
|
case reflect.String:
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if typeField.Tag.Get("flag") != "" {
|
if typeField.Tag.Get("flag") != "" {
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|
|
27
vendor/golang.org/x/net/LICENSE
generated
vendored
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27
vendor/golang.org/x/net/LICENSE
generated
vendored
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|
@ -0,0 +1,27 @@
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|
Copyright (c) 2009 The Go Authors. All rights reserved.
|
||||||
|
|
||||||
|
Redistribution and use in source and binary forms, with or without
|
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|
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
|
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|
distribution.
|
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|
* 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
|
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|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
22
vendor/golang.org/x/net/PATENTS
generated
vendored
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22
vendor/golang.org/x/net/PATENTS
generated
vendored
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|
@ -0,0 +1,22 @@
|
||||||
|
Additional IP Rights Grant (Patents)
|
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|
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|
"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.
|
447
vendor/golang.org/x/net/context/context.go
generated
vendored
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447
vendor/golang.org/x/net/context/context.go
generated
vendored
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|
@ -0,0 +1,447 @@
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|
// Copyright 2014 The Go Authors. All rights reserved.
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||||||
|
// Use of this source code is governed by a BSD-style
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|
// license that can be found in the LICENSE file.
|
||||||
|
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|
// Package context defines the Context type, which carries deadlines,
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|
// cancelation signals, and other request-scoped values across API boundaries
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|
// and between processes.
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||||||
|
//
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|
// Incoming requests to a server should create a Context, and outgoing calls to
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|
// servers should accept a Context. The chain of function calls between must
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|
// propagate the Context, optionally replacing it with a modified copy created
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|
// using WithDeadline, WithTimeout, WithCancel, or WithValue.
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|
//
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||||||
|
// Programs that use Contexts should follow these rules to keep interfaces
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||||||
|
// consistent across packages and enable static analysis tools to check context
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|
// propagation:
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||||||
|
//
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||||||
|
// Do not store Contexts inside a struct type; instead, pass a Context
|
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|
// explicitly to each function that needs it. The Context should be the first
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||||||
|
// parameter, typically named ctx:
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|
//
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|
// func DoSomething(ctx context.Context, arg Arg) error {
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|
// // ... use ctx ...
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|
// }
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|
//
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|
// Do not pass a nil Context, even if a function permits it. Pass context.TODO
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||||||
|
// if you are unsure about which Context to use.
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|
//
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||||||
|
// Use context Values only for request-scoped data that transits processes and
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||||||
|
// APIs, not for passing optional parameters to functions.
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||||||
|
//
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|
// The same Context may be passed to functions running in different goroutines;
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|
// Contexts are safe for simultaneous use by multiple goroutines.
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||||||
|
//
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||||||
|
// See http://blog.golang.org/context for example code for a server that uses
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|
// Contexts.
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|
package context
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|
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|
import (
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|
"errors"
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||||||
|
"fmt"
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||||||
|
"sync"
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|
"time"
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|
)
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|
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|
// A Context carries a deadline, a cancelation signal, and other values across
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|
// API boundaries.
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||||||
|
//
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||||||
|
// Context's methods may be called by multiple goroutines simultaneously.
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||||||
|
type Context interface {
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|
// Deadline returns the time when work done on behalf of this context
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|
// should be canceled. Deadline returns ok==false when no deadline is
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||||||
|
// set. Successive calls to Deadline return the same results.
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|
Deadline() (deadline time.Time, ok bool)
|
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|
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||||||
|
// Done returns a channel that's closed when work done on behalf of this
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||||||
|
// context should be canceled. Done may return nil if this context can
|
||||||
|
// never be canceled. Successive calls to Done return the same value.
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||||||
|
//
|
||||||
|
// 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{}
|
||||||
|
}
|
||||||
|
|
||||||
|
// 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")
|
||||||
|
|
||||||
|
// 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)
|
||||||
|
)
|
||||||
|
|
||||||
|
// 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
|
||||||
|
}
|
||||||
|
|
||||||
|
// 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()
|
||||||
|
|
||||||
|
// 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)
|
||||||
|
}
|
Loading…
Reference in a new issue