Update weaveworks/common to latest version

```
$ gvt delete github.com/weaveworks/common
$ gvt fetch --revision 4d96fd8dcf2c7b417912c6219b310112cb4a4626 github.com/weaveworks/common
2018/07/23 15:31:11 Fetching: github.com/weaveworks/common
2018/07/23 15:31:14 · Skipping (existing): github.com/golang/protobuf/ptypes/any
2018/07/23 15:31:14 · Fetching recursive dependency: github.com/pkg/errors
2018/07/23 15:31:16 · Skipping (existing): github.com/aws/aws-sdk-go/aws
2018/07/23 15:31:16 · Fetching recursive dependency: github.com/sirupsen/logrus
2018/07/23 15:31:18 ·· Skipping (existing): golang.org/x/sys/unix
2018/07/23 15:31:18 ·· Skipping (existing): golang.org/x/crypto/ssh/terminal
2018/07/23 15:31:18 · Skipping (existing): google.golang.org/grpc/status
2018/07/23 15:31:18 · Skipping (existing): github.com/gorilla/mux
2018/07/23 15:31:18 · Fetching recursive dependency: github.com/opentracing-contrib/go-stdlib/nethttp
2018/07/23 15:31:20 ·· Skipping (existing): github.com/opentracing/opentracing-go/ext
2018/07/23 15:31:20 ·· Skipping (existing): github.com/opentracing/opentracing-go/log
2018/07/23 15:31:20 ·· Skipping (existing): github.com/opentracing/opentracing-go
2018/07/23 15:31:20 · Skipping (existing): github.com/prometheus/client_golang/prometheus
2018/07/23 15:31:20 · Skipping (existing): google.golang.org/grpc
2018/07/23 15:31:20 · Skipping (existing): github.com/pmezard/go-difflib/difflib
2018/07/23 15:31:20 · Fetching recursive dependency: github.com/go-kit/kit/log
2018/07/23 15:31:23 ·· Fetching recursive dependency: github.com/go-logfmt/logfmt
2018/07/23 15:31:25 ··· Fetching recursive dependency: github.com/kr/logfmt
2018/07/23 15:31:27 ·· Fetching recursive dependency: github.com/go-stack/stack
2018/07/23 15:31:29 · Fetching recursive dependency: google.golang.org/genproto/googleapis/rpc/status
2018/07/23 15:31:37 ·· Skipping (existing): github.com/golang/protobuf/proto
2018/07/23 15:31:37 ·· Skipping (existing): github.com/golang/protobuf/ptypes/any
2018/07/23 15:31:37 · Skipping (existing): github.com/opentracing/opentracing-go/log
2018/07/23 15:31:37 · Fetching recursive dependency: github.com/sercand/kuberesolver
2018/07/23 15:31:39 ·· Skipping (existing): google.golang.org/grpc/grpclog
2018/07/23 15:31:39 ·· Skipping (existing): google.golang.org/grpc/resolver
2018/07/23 15:31:39 ·· Skipping (existing): golang.org/x/net/context
2018/07/23 15:31:39 · Skipping (existing): google.golang.org/grpc/metadata
2018/07/23 15:31:39 · Skipping (existing): github.com/opentracing/opentracing-go/ext
2018/07/23 15:31:39 · Skipping (existing): github.com/armon/go-socks5
2018/07/23 15:31:39 · Skipping (existing): github.com/opentracing/opentracing-go
2018/07/23 15:31:39 · Skipping (existing): github.com/davecgh/go-spew/spew
2018/07/23 15:31:39 · Skipping (existing): github.com/golang/protobuf/ptypes
2018/07/23 15:31:39 · Skipping (existing): github.com/golang/protobuf/proto
2018/07/23 15:31:39 · Fetching recursive dependency: github.com/grpc-ecosystem/grpc-opentracing/go/otgrpc
2018/07/23 15:31:41 ·· Skipping (existing): github.com/opentracing/opentracing-go/log
2018/07/23 15:31:41 ·· Skipping (existing): golang.org/x/net/context
2018/07/23 15:31:41 ·· Skipping (existing): google.golang.org/grpc/codes
2018/07/23 15:31:41 ·· Skipping (existing): github.com/golang/protobuf/proto
2018/07/23 15:31:41 ·· Skipping (existing): github.com/opentracing/opentracing-go
2018/07/23 15:31:41 ·· Skipping (existing): github.com/opentracing/opentracing-go/ext
2018/07/23 15:31:41 ·· Skipping (existing): google.golang.org/grpc
2018/07/23 15:31:41 ·· Skipping (existing): google.golang.org/grpc/metadata
2018/07/23 15:31:41 ·· Skipping (existing): google.golang.org/grpc/status
2018/07/23 15:31:41 · Fetching recursive dependency: github.com/uber/jaeger-client-go/config
2018/07/23 15:31:44 ·· Fetching recursive dependency: github.com/uber/jaeger-client-go/internal/throttler/remote
2018/07/23 15:31:44 ··· Fetching recursive dependency: github.com/uber/jaeger-client-go/utils
2018/07/23 15:31:44 ···· Fetching recursive dependency: github.com/uber/jaeger-client-go/thrift
2018/07/23 15:31:44 ···· Fetching recursive dependency: github.com/uber/jaeger-client-go/thrift-gen/agent
2018/07/23 15:31:44 ····· Fetching recursive dependency: github.com/uber/jaeger-client-go/thrift-gen/jaeger
2018/07/23 15:31:44 ····· Fetching recursive dependency: github.com/uber/jaeger-client-go/thrift-gen/zipkincore
2018/07/23 15:31:44 ··· Fetching recursive dependency: github.com/uber/jaeger-client-go
2018/07/23 15:31:44 ···· Fetching recursive dependency: github.com/crossdock/crossdock-go
2018/07/23 15:31:46 ····· Skipping (existing): github.com/davecgh/go-spew/spew
2018/07/23 15:31:46 ····· Skipping (existing): golang.org/x/net/context/ctxhttp
2018/07/23 15:31:46 ····· Skipping (existing): golang.org/x/net/context
2018/07/23 15:31:46 ····· Skipping (existing): github.com/pmezard/go-difflib/difflib
2018/07/23 15:31:46 ···· Skipping (existing): github.com/opentracing/opentracing-go/log
2018/07/23 15:31:46 ···· Fetching recursive dependency: go.uber.org/zap/zapcore
2018/07/23 15:31:49 ····· Fetching recursive dependency: go.uber.org/atomic
2018/07/23 15:31:51 ····· Fetching recursive dependency: go.uber.org/zap/internal/bufferpool
2018/07/23 15:31:51 ······ Fetching recursive dependency: go.uber.org/zap/buffer
2018/07/23 15:31:51 ····· Fetching recursive dependency: go.uber.org/multierr
2018/07/23 15:31:54 ····· Fetching recursive dependency: go.uber.org/zap/internal/exit
2018/07/23 15:31:54 ····· Fetching recursive dependency: go.uber.org/zap/internal/color
2018/07/23 15:31:54 ···· Fetching recursive dependency: go.uber.org/zap
2018/07/23 15:31:54 ···· Skipping (existing): github.com/opentracing/opentracing-go
2018/07/23 15:31:54 ···· Skipping (existing): github.com/opentracing/opentracing-go/ext
2018/07/23 15:31:54 ···· Fetching recursive dependency: github.com/uber/jaeger-lib/metrics
2018/07/23 15:31:56 ····· Fetching recursive dependency: github.com/uber-go/tally
2018/07/23 15:31:58 ······ Fetching recursive dependency: github.com/m3db/prometheus_client_golang/prometheus/promhttp
2018/07/23 15:32:00 ······· Skipping (existing): github.com/prometheus/client_golang/prometheus
2018/07/23 15:32:00 ······· Skipping (existing): github.com/prometheus/common/expfmt
2018/07/23 15:32:00 ······· Skipping (existing): github.com/prometheus/client_model/go
2018/07/23 15:32:00 ······ Fetching recursive dependency: gopkg.in/validator.v2
2018/07/23 15:32:06 ······ Fetching recursive dependency: github.com/cactus/go-statsd-client/statsd
2018/07/23 15:32:08 ······ Skipping (existing): gopkg.in/yaml.v2
2018/07/23 15:32:08 ······ Fetching recursive dependency: github.com/m3db/prometheus_client_golang/prometheus
2018/07/23 15:32:08 ······· Skipping (existing): github.com/prometheus/procfs
2018/07/23 15:32:08 ······· Skipping (existing): github.com/prometheus/client_model/go
2018/07/23 15:32:08 ······· Skipping (existing): github.com/prometheus/common/expfmt
2018/07/23 15:32:08 ······· Skipping (existing): golang.org/x/net/context
2018/07/23 15:32:08 ······· Skipping (existing): github.com/beorn7/perks/quantile
2018/07/23 15:32:08 ······· Skipping (existing): github.com/golang/protobuf/proto
2018/07/23 15:32:08 ······· Skipping (existing): github.com/prometheus/common/model
2018/07/23 15:32:08 ······· Skipping (existing): github.com/prometheus/client_golang/prometheus
2018/07/23 15:32:08 ······ Fetching recursive dependency: github.com/apache/thrift/lib/go/thrift
2018/07/23 15:32:13 ····· Skipping (existing): github.com/stretchr/testify/assert
2018/07/23 15:32:13 ····· Fetching recursive dependency: github.com/go-kit/kit/metrics/influx
2018/07/23 15:32:13 ······ Fetching recursive dependency: github.com/influxdata/influxdb/client/v2
2018/07/23 15:32:17 ······· Fetching recursive dependency: github.com/influxdata/influxdb/models
2018/07/23 15:32:17 ········ Fetching recursive dependency: github.com/influxdata/influxdb/pkg/escape
2018/07/23 15:32:17 ······ Fetching recursive dependency: github.com/go-kit/kit/metrics
2018/07/23 15:32:17 ······· Fetching recursive dependency: github.com/performancecopilot/speed
2018/07/23 15:32:19 ······· Fetching recursive dependency: github.com/aws/aws-sdk-go-v2/aws
2018/07/23 15:32:28 ········ Fetching recursive dependency: github.com/aws/aws-sdk-go-v2/internal/sdk
2018/07/23 15:32:28 ········ Skipping (existing): github.com/go-ini/ini
2018/07/23 15:32:28 ········ Fetching recursive dependency: github.com/aws/aws-sdk-go-v2/service/sts
2018/07/23 15:32:28 ········· Fetching recursive dependency: github.com/aws/aws-sdk-go-v2/private/protocol/query
2018/07/23 15:32:28 ·········· Fetching recursive dependency: github.com/aws/aws-sdk-go-v2/private/protocol
2018/07/23 15:32:28 ········· Fetching recursive dependency: github.com/aws/aws-sdk-go-v2/internal/awsutil
2018/07/23 15:32:28 ·········· Skipping (existing): github.com/jmespath/go-jmespath
2018/07/23 15:32:28 ······· Fetching recursive dependency: github.com/aws/aws-sdk-go-v2/service/cloudwatch
2018/07/23 15:32:29 ······· Skipping (existing): github.com/aws/aws-sdk-go/aws
2018/07/23 15:32:29 ······· Skipping (existing): github.com/prometheus/client_golang/prometheus
2018/07/23 15:32:29 ······· Skipping (existing): github.com/aws/aws-sdk-go/service/cloudwatch
2018/07/23 15:32:29 ······· Skipping (existing): github.com/aws/aws-sdk-go/service/cloudwatch/cloudwatchiface
2018/07/23 15:32:29 ······· Fetching recursive dependency: golang.org/x/sync/errgroup
2018/07/23 15:32:31 ········ Skipping (existing): golang.org/x/net/context
2018/07/23 15:32:31 ······· Fetching recursive dependency: github.com/go-kit/kit/util/conn
2018/07/23 15:32:31 ······· Fetching recursive dependency: github.com/VividCortex/gohistogram
2018/07/23 15:32:33 ····· Skipping (existing): github.com/prometheus/client_golang/prometheus
2018/07/23 15:32:33 ····· Fetching recursive dependency: github.com/codahale/hdrhistogram
2018/07/23 15:32:35 ·· Skipping (existing): github.com/opentracing/opentracing-go
2018/07/23 15:32:35 · Fetching recursive dependency: github.com/mwitkow/go-grpc-middleware
2018/07/23 15:32:37 ·· Fetching recursive dependency: github.com/grpc-ecosystem/go-grpc-middleware/logging
2018/07/23 15:32:39 ··· Fetching recursive dependency: github.com/grpc-ecosystem/go-grpc-middleware
2018/07/23 15:32:39 ···· Fetching recursive dependency: github.com/golang/protobuf/jsonpb
2018/07/23 15:32:42 ····· Skipping (existing): github.com/golang/protobuf/ptypes/timestamp
2018/07/23 15:32:42 ····· Skipping (existing): github.com/golang/protobuf/proto
2018/07/23 15:32:42 ····· Skipping (existing): github.com/golang/protobuf/ptypes/duration
2018/07/23 15:32:42 ····· Skipping (existing): github.com/golang/protobuf/ptypes/any
2018/07/23 15:32:42 ····· Skipping (existing): github.com/golang/protobuf/ptypes/struct
2018/07/23 15:32:42 ····· Skipping (existing): github.com/golang/protobuf/ptypes/wrappers
2018/07/23 15:32:42 ···· Skipping (existing): google.golang.org/grpc/metadata
2018/07/23 15:32:42 ···· Fetching recursive dependency: github.com/stretchr/testify/suite
2018/07/23 15:32:45 ····· Skipping (existing): github.com/stretchr/testify/assert
2018/07/23 15:32:45 ····· Fetching recursive dependency: github.com/stretchr/testify/require
2018/07/23 15:32:45 ······ Skipping (existing): github.com/stretchr/testify/assert
2018/07/23 15:32:45 ···· Skipping (existing): google.golang.org/grpc/peer
2018/07/23 15:32:45 ···· Skipping (existing): golang.org/x/net/context
2018/07/23 15:32:45 ···· Skipping (existing): golang.org/x/net/trace
2018/07/23 15:32:45 ···· Fetching recursive dependency: github.com/gogo/protobuf/gogoproto
2018/07/23 15:32:48 ····· Fetching recursive dependency: github.com/gogo/protobuf/protoc-gen-gogo/descriptor
2018/07/23 15:32:48 ······ Skipping (existing): github.com/gogo/protobuf/proto
2018/07/23 15:32:48 ····· Skipping (existing): github.com/gogo/protobuf/proto
2018/07/23 15:32:48 ···· Skipping (existing): google.golang.org/grpc/credentials
2018/07/23 15:32:48 ···· Skipping (existing): google.golang.org/grpc
2018/07/23 15:32:48 ···· Skipping (existing): github.com/opentracing/opentracing-go
2018/07/23 15:32:48 ···· Skipping (existing): google.golang.org/grpc/codes
2018/07/23 15:32:48 ···· Skipping (existing): github.com/golang/protobuf/proto
2018/07/23 15:32:48 ···· Skipping (existing): google.golang.org/grpc/grpclog
2018/07/23 15:32:48 ···· Skipping (existing): github.com/opentracing/opentracing-go/ext
2018/07/23 15:32:48 ···· Skipping (existing): github.com/opentracing/opentracing-go/log
2018/07/23 15:32:48 ··· Skipping (existing): golang.org/x/net/context
2018/07/23 15:32:48 ··· Skipping (existing): google.golang.org/grpc
2018/07/23 15:32:48 ··· Skipping (existing): google.golang.org/grpc/grpclog
2018/07/23 15:32:48 ··· Skipping (existing): google.golang.org/grpc/codes
2018/07/23 15:32:48 ··· Skipping (existing): github.com/golang/protobuf/proto
2018/07/23 15:32:48 ·· Skipping (existing): github.com/opentracing/opentracing-go
2018/07/23 15:32:48 ·· Skipping (existing): google.golang.org/grpc
2018/07/23 15:32:48 ·· Skipping (existing): golang.org/x/net/context
2018/07/23 15:32:48 ·· Skipping (existing): google.golang.org/grpc/codes
2018/07/23 15:32:48 ·· Skipping (existing): google.golang.org/grpc/grpclog
2018/07/23 15:32:48 ·· Skipping (existing): github.com/opentracing/opentracing-go/log
2018/07/23 15:32:48 ·· Skipping (existing): google.golang.org/grpc/metadata
2018/07/23 15:32:48 ·· Skipping (existing): google.golang.org/grpc/peer
2018/07/23 15:32:48 ·· Skipping (existing): google.golang.org/grpc/credentials
2018/07/23 15:32:48 ·· Skipping (existing): github.com/golang/protobuf/proto
2018/07/23 15:32:48 ·· Skipping (existing): golang.org/x/net/trace
2018/07/23 15:32:48 ·· Skipping (existing): github.com/opentracing/opentracing-go/ext
2018/07/23 15:32:48 · Fetching recursive dependency: github.com/weaveworks/promrus
2018/07/23 15:32:53 ·· Skipping (existing): gopkg.in/yaml.v2
2018/07/23 15:32:53 ·· Skipping (existing): golang.org/x/net/context/ctxhttp
2018/07/23 15:32:53 ·· Fetching recursive dependency: github.com/stretchr/objx
2018/07/23 15:32:55 ·· Fetching recursive dependency: gopkg.in/alecthomas/kingpin.v2
2018/07/23 15:32:58 ··· Fetching recursive dependency: github.com/alecthomas/units
2018/07/23 15:33:00 ··· Fetching recursive dependency: github.com/alecthomas/template
2018/07/23 15:33:02 ·· Fetching recursive dependency: github.com/julienschmidt/httprouter
2018/07/23 15:33:05 ·· Skipping (existing): golang.org/x/net/context
2018/07/23 15:33:05 · Skipping (existing): github.com/aws/aws-sdk-go/aws/credentials
2018/07/23 15:33:05 · Skipping (existing): github.com/golang/protobuf/ptypes/empty
2018/07/23 15:33:05 · Skipping (existing): golang.org/x/net/context
2018/07/23 15:33:05 · Skipping (existing): golang.org/x/tools/cover
2018/07/23 15:33:05 · Skipping (existing): github.com/mgutz/ansi
```
This commit is contained in:
Marc Carré
2018-07-23 15:33:58 +02:00
parent 0153f016d3
commit 652cc90f98
1466 changed files with 394515 additions and 359 deletions

21
vendor/github.com/go-stack/stack/LICENSE.md generated vendored Normal file
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@@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2014 Chris Hines
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

324
vendor/github.com/go-stack/stack/stack.go generated vendored Normal file
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// +build go1.7
// 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 {
frame runtime.Frame
}
// 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 {
// As of Go 1.9 we need room for up to three PC entries.
//
// 0. An entry for the stack frame prior to the target to check for
// special handling needed if that prior entry is runtime.sigpanic.
// 1. A possible second entry to hold metadata about skipped inlined
// functions. If inline functions were not skipped the target frame
// PC will be here.
// 2. A third entry for the target frame PC when the second entry
// is used for skipped inline functions.
var pcs [3]uintptr
n := runtime.Callers(skip+1, pcs[:])
frames := runtime.CallersFrames(pcs[:n])
frame, _ := frames.Next()
frame, _ = frames.Next()
return Call{
frame: frame,
}
}
// 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.frame == (runtime.Frame{}) {
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
// %k last segment of the package path
// %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
// %+k full package path
// %+v equivalent to %+s:%d
// %#v equivalent to %#s:%d
func (c Call) Format(s fmt.State, verb rune) {
if c.frame == (runtime.Frame{}) {
fmt.Fprintf(s, "%%!%c(NOFUNC)", verb)
return
}
switch verb {
case 's', 'v':
file := c.frame.File
switch {
case s.Flag('#'):
// done
case s.Flag('+'):
file = file[pkgIndex(file, c.frame.Function):]
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(c.frame.Line), 10))
}
case 'd':
buf := [6]byte{}
s.Write(strconv.AppendInt(buf[:0], int64(c.frame.Line), 10))
case 'k':
name := c.frame.Function
const pathSep = "/"
start, end := 0, len(name)
if i := strings.LastIndex(name, pathSep); i != -1 {
start = i + len(pathSep)
}
const pkgSep = "."
if i := strings.Index(name[start:], pkgSep); i != -1 {
end = start + i
}
if s.Flag('+') {
start = 0
}
io.WriteString(s, name[start:end])
case 'n':
name := c.frame.Function
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)
}
}
// Frame returns the call frame infomation for the Call.
func (c Call) Frame() runtime.Frame {
return c.frame
}
// PC returns the program counter for this call frame; multiple frames may
// have the same PC value.
//
// Deprecated: Use Call.Frame instead.
func (c Call) PC() uintptr {
return c.frame.PC
}
// 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 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)
}
// 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(1, pcs[:])
frames := runtime.CallersFrames(pcs[:n])
cs := make(CallStack, 0, n)
// Skip extra frame retrieved just to make sure the runtime.sigpanic
// special case is handled.
frame, more := frames.Next()
for more {
frame, more = frames.Next()
cs = append(cs, Call{frame: frame})
}
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] != c {
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] != c {
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 [3]uintptr
runtime.Callers(0, pcs[:])
frames := runtime.CallersFrames(pcs[:])
frame, _ := frames.Next()
file := frame.File
idx := pkgIndex(frame.File, frame.Function)
runtimePath = file[:idx]
if runtime.GOOS == "windows" {
runtimePath = strings.ToLower(runtimePath)
}
}
func inGoroot(c Call) bool {
file := c.frame.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
}