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-rw-r--r--vendor/github.com/go-stack/stack/LICENSE.md13
-rw-r--r--vendor/github.com/go-stack/stack/README.md38
-rw-r--r--vendor/github.com/go-stack/stack/stack.go349
-rw-r--r--vendor/vendor.json6
4 files changed, 406 insertions, 0 deletions
diff --git a/vendor/github.com/go-stack/stack/LICENSE.md b/vendor/github.com/go-stack/stack/LICENSE.md
new file mode 100644
index 000000000..c8ca66c5e
--- /dev/null
+++ b/vendor/github.com/go-stack/stack/LICENSE.md
@@ -0,0 +1,13 @@
+Copyright 2014 Chris Hines
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
diff --git a/vendor/github.com/go-stack/stack/README.md b/vendor/github.com/go-stack/stack/README.md
new file mode 100644
index 000000000..f11ccccaa
--- /dev/null
+++ b/vendor/github.com/go-stack/stack/README.md
@@ -0,0 +1,38 @@
+[![GoDoc](https://godoc.org/github.com/go-stack/stack?status.svg)](https://godoc.org/github.com/go-stack/stack)
+[![Go Report Card](https://goreportcard.com/badge/go-stack/stack)](https://goreportcard.com/report/go-stack/stack)
+[![TravisCI](https://travis-ci.org/go-stack/stack.svg?branch=master)](https://travis-ci.org/go-stack/stack)
+[![Coverage Status](https://coveralls.io/repos/github/go-stack/stack/badge.svg?branch=master)](https://coveralls.io/github/go-stack/stack?branch=master)
+
+# stack
+
+Package stack implements utilities to capture, manipulate, and format call
+stacks. It provides a simpler API than package runtime.
+
+The implementation takes care of the minutia and special cases of interpreting
+the program counter (pc) values returned by runtime.Callers.
+
+## Versioning
+
+Package stack publishes releases via [semver](http://semver.org/) compatible Git
+tags prefixed with a single 'v'. The master branch always contains the latest
+release. The develop branch contains unreleased commits.
+
+## Formatting
+
+Package stack's types implement fmt.Formatter, which provides a simple and
+flexible way to declaratively configure formatting when used with logging or
+error tracking packages.
+
+```go
+func DoTheThing() {
+ c := stack.Caller(0)
+ log.Print(c) // "source.go:10"
+ log.Printf("%+v", c) // "pkg/path/source.go:10"
+ log.Printf("%n", c) // "DoTheThing"
+
+ s := stack.Trace().TrimRuntime()
+ log.Print(s) // "[source.go:15 caller.go:42 main.go:14]"
+}
+```
+
+See the docs for all of the supported formatting options.
diff --git a/vendor/github.com/go-stack/stack/stack.go b/vendor/github.com/go-stack/stack/stack.go
new file mode 100644
index 000000000..a614eeebf
--- /dev/null
+++ b/vendor/github.com/go-stack/stack/stack.go
@@ -0,0 +1,349 @@
+// Package stack implements utilities to capture, manipulate, and format call
+// stacks. It provides a simpler API than package runtime.
+//
+// The implementation takes care of the minutia and special cases of
+// interpreting the program counter (pc) values returned by runtime.Callers.
+//
+// Package stack's types implement fmt.Formatter, which provides a simple and
+// flexible way to declaratively configure formatting when used with logging
+// or error tracking packages.
+package stack
+
+import (
+ "bytes"
+ "errors"
+ "fmt"
+ "io"
+ "runtime"
+ "strconv"
+ "strings"
+)
+
+// Call records a single function invocation from a goroutine stack.
+type Call struct {
+ fn *runtime.Func
+ pc uintptr
+}
+
+// Caller returns a Call from the stack of the current goroutine. The argument
+// skip is the number of stack frames to ascend, with 0 identifying the
+// calling function.
+func Caller(skip int) Call {
+ var pcs [2]uintptr
+ n := runtime.Callers(skip+1, pcs[:])
+
+ var c Call
+
+ if n < 2 {
+ return c
+ }
+
+ c.pc = pcs[1]
+ if runtime.FuncForPC(pcs[0]) != sigpanic {
+ c.pc--
+ }
+ c.fn = runtime.FuncForPC(c.pc)
+ return c
+}
+
+// String implements fmt.Stinger. It is equivalent to fmt.Sprintf("%v", c).
+func (c Call) String() string {
+ return fmt.Sprint(c)
+}
+
+// MarshalText implements encoding.TextMarshaler. It formats the Call the same
+// as fmt.Sprintf("%v", c).
+func (c Call) MarshalText() ([]byte, error) {
+ if c.fn == nil {
+ return nil, ErrNoFunc
+ }
+ buf := bytes.Buffer{}
+ fmt.Fprint(&buf, c)
+ return buf.Bytes(), nil
+}
+
+// ErrNoFunc means that the Call has a nil *runtime.Func. The most likely
+// cause is a Call with the zero value.
+var ErrNoFunc = errors.New("no call stack information")
+
+// Format implements fmt.Formatter with support for the following verbs.
+//
+// %s source file
+// %d line number
+// %n function name
+// %v equivalent to %s:%d
+//
+// It accepts the '+' and '#' flags for most of the verbs as follows.
+//
+// %+s path of source file relative to the compile time GOPATH
+// %#s full path of source file
+// %+n import path qualified function name
+// %+v equivalent to %+s:%d
+// %#v equivalent to %#s:%d
+func (c Call) Format(s fmt.State, verb rune) {
+ if c.fn == nil {
+ fmt.Fprintf(s, "%%!%c(NOFUNC)", verb)
+ return
+ }
+
+ switch verb {
+ case 's', 'v':
+ file, line := c.fn.FileLine(c.pc)
+ switch {
+ case s.Flag('#'):
+ // done
+ case s.Flag('+'):
+ file = file[pkgIndex(file, c.fn.Name()):]
+ default:
+ const sep = "/"
+ if i := strings.LastIndex(file, sep); i != -1 {
+ file = file[i+len(sep):]
+ }
+ }
+ io.WriteString(s, file)
+ if verb == 'v' {
+ buf := [7]byte{':'}
+ s.Write(strconv.AppendInt(buf[:1], int64(line), 10))
+ }
+
+ case 'd':
+ _, line := c.fn.FileLine(c.pc)
+ buf := [6]byte{}
+ s.Write(strconv.AppendInt(buf[:0], int64(line), 10))
+
+ case 'n':
+ name := c.fn.Name()
+ if !s.Flag('+') {
+ const pathSep = "/"
+ if i := strings.LastIndex(name, pathSep); i != -1 {
+ name = name[i+len(pathSep):]
+ }
+ const pkgSep = "."
+ if i := strings.Index(name, pkgSep); i != -1 {
+ name = name[i+len(pkgSep):]
+ }
+ }
+ io.WriteString(s, name)
+ }
+}
+
+// PC returns the program counter for this call frame; multiple frames may
+// have the same PC value.
+func (c Call) PC() uintptr {
+ return c.pc
+}
+
+// name returns the import path qualified name of the function containing the
+// call.
+func (c Call) name() string {
+ if c.fn == nil {
+ return "???"
+ }
+ return c.fn.Name()
+}
+
+func (c Call) file() string {
+ if c.fn == nil {
+ return "???"
+ }
+ file, _ := c.fn.FileLine(c.pc)
+ return file
+}
+
+func (c Call) line() int {
+ if c.fn == nil {
+ return 0
+ }
+ _, line := c.fn.FileLine(c.pc)
+ return line
+}
+
+// CallStack records a sequence of function invocations from a goroutine
+// stack.
+type CallStack []Call
+
+// String implements fmt.Stinger. It is equivalent to fmt.Sprintf("%v", cs).
+func (cs CallStack) String() string {
+ return fmt.Sprint(cs)
+}
+
+var (
+ openBracketBytes = []byte("[")
+ closeBracketBytes = []byte("]")
+ spaceBytes = []byte(" ")
+)
+
+// MarshalText implements encoding.TextMarshaler. It formats the CallStack the
+// same as fmt.Sprintf("%v", cs).
+func (cs CallStack) MarshalText() ([]byte, error) {
+ buf := bytes.Buffer{}
+ buf.Write(openBracketBytes)
+ for i, pc := range cs {
+ if pc.fn == nil {
+ return nil, ErrNoFunc
+ }
+ if i > 0 {
+ buf.Write(spaceBytes)
+ }
+ fmt.Fprint(&buf, pc)
+ }
+ buf.Write(closeBracketBytes)
+ return buf.Bytes(), nil
+}
+
+// Format implements fmt.Formatter by printing the CallStack as square brackets
+// ([, ]) surrounding a space separated list of Calls each formatted with the
+// supplied verb and options.
+func (cs CallStack) Format(s fmt.State, verb rune) {
+ s.Write(openBracketBytes)
+ for i, pc := range cs {
+ if i > 0 {
+ s.Write(spaceBytes)
+ }
+ pc.Format(s, verb)
+ }
+ s.Write(closeBracketBytes)
+}
+
+// findSigpanic intentionally executes faulting code to generate a stack trace
+// containing an entry for runtime.sigpanic.
+func findSigpanic() *runtime.Func {
+ var fn *runtime.Func
+ var p *int
+ func() int {
+ defer func() {
+ if p := recover(); p != nil {
+ var pcs [512]uintptr
+ n := runtime.Callers(2, pcs[:])
+ for _, pc := range pcs[:n] {
+ f := runtime.FuncForPC(pc)
+ if f.Name() == "runtime.sigpanic" {
+ fn = f
+ break
+ }
+ }
+ }
+ }()
+ // intentional nil pointer dereference to trigger sigpanic
+ return *p
+ }()
+ return fn
+}
+
+var sigpanic = findSigpanic()
+
+// Trace returns a CallStack for the current goroutine with element 0
+// identifying the calling function.
+func Trace() CallStack {
+ var pcs [512]uintptr
+ n := runtime.Callers(2, pcs[:])
+ cs := make([]Call, n)
+
+ for i, pc := range pcs[:n] {
+ pcFix := pc
+ if i > 0 && cs[i-1].fn != sigpanic {
+ pcFix--
+ }
+ cs[i] = Call{
+ fn: runtime.FuncForPC(pcFix),
+ pc: pcFix,
+ }
+ }
+
+ return cs
+}
+
+// TrimBelow returns a slice of the CallStack with all entries below c
+// removed.
+func (cs CallStack) TrimBelow(c Call) CallStack {
+ for len(cs) > 0 && cs[0].pc != c.pc {
+ cs = cs[1:]
+ }
+ return cs
+}
+
+// TrimAbove returns a slice of the CallStack with all entries above c
+// removed.
+func (cs CallStack) TrimAbove(c Call) CallStack {
+ for len(cs) > 0 && cs[len(cs)-1].pc != c.pc {
+ cs = cs[:len(cs)-1]
+ }
+ return cs
+}
+
+// pkgIndex returns the index that results in file[index:] being the path of
+// file relative to the compile time GOPATH, and file[:index] being the
+// $GOPATH/src/ portion of file. funcName must be the name of a function in
+// file as returned by runtime.Func.Name.
+func pkgIndex(file, funcName string) int {
+ // As of Go 1.6.2 there is no direct way to know the compile time GOPATH
+ // at runtime, but we can infer the number of path segments in the GOPATH.
+ // We note that runtime.Func.Name() returns the function name qualified by
+ // the import path, which does not include the GOPATH. Thus we can trim
+ // segments from the beginning of the file path until the number of path
+ // separators remaining is one more than the number of path separators in
+ // the function name. For example, given:
+ //
+ // GOPATH /home/user
+ // file /home/user/src/pkg/sub/file.go
+ // fn.Name() pkg/sub.Type.Method
+ //
+ // We want to produce:
+ //
+ // file[:idx] == /home/user/src/
+ // file[idx:] == pkg/sub/file.go
+ //
+ // From this we can easily see that fn.Name() has one less path separator
+ // than our desired result for file[idx:]. We count separators from the
+ // end of the file path until it finds two more than in the function name
+ // and then move one character forward to preserve the initial path
+ // segment without a leading separator.
+ const sep = "/"
+ i := len(file)
+ for n := strings.Count(funcName, sep) + 2; n > 0; n-- {
+ i = strings.LastIndex(file[:i], sep)
+ if i == -1 {
+ i = -len(sep)
+ break
+ }
+ }
+ // get back to 0 or trim the leading separator
+ return i + len(sep)
+}
+
+var runtimePath string
+
+func init() {
+ var pcs [1]uintptr
+ runtime.Callers(0, pcs[:])
+ fn := runtime.FuncForPC(pcs[0])
+ file, _ := fn.FileLine(pcs[0])
+
+ idx := pkgIndex(file, fn.Name())
+
+ runtimePath = file[:idx]
+ if runtime.GOOS == "windows" {
+ runtimePath = strings.ToLower(runtimePath)
+ }
+}
+
+func inGoroot(c Call) bool {
+ file := c.file()
+ if len(file) == 0 || file[0] == '?' {
+ return true
+ }
+ if runtime.GOOS == "windows" {
+ file = strings.ToLower(file)
+ }
+ return strings.HasPrefix(file, runtimePath) || strings.HasSuffix(file, "/_testmain.go")
+}
+
+// TrimRuntime returns a slice of the CallStack with the topmost entries from
+// the go runtime removed. It considers any calls originating from unknown
+// files, files under GOROOT, or _testmain.go as part of the runtime.
+func (cs CallStack) TrimRuntime() CallStack {
+ for len(cs) > 0 && inGoroot(cs[len(cs)-1]) {
+ cs = cs[:len(cs)-1]
+ }
+ return cs
+}
diff --git a/vendor/vendor.json b/vendor/vendor.json
index e19d011f1..eda007745 100644
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@@ -53,6 +53,12 @@
"revisionTime": "2017-01-17T22:23:42Z"
},
{
+ "checksumSHA1": "2sj/DbXoXdnPAfjAEyhS0Jj5QL0=",
+ "path": "github.com/go-stack/stack",
+ "revision": "100eb0c0a9c5b306ca2fb4f165df21d80ada4b82",
+ "revisionTime": "2016-05-14T03:44:11Z"
+ },
+ {
"checksumSHA1": "p/8vSviYF91gFflhrt5vkyksroo=",
"path": "github.com/golang/snappy",
"revision": "553a641470496b2327abcac10b36396bd98e45c9",