Checking in vendor folder for ease of using go get.

vendor/github.com/mitchellh/mapstructure/.travis.yml

@@ -0,0 +1,8 @@
+language: go
+
+go:
+  - "1.11.x"
+  - tip
+
+script:
+  - go test

vendor/github.com/mitchellh/mapstructure/CHANGELOG.md

@@ -0,0 +1,21 @@
+## 1.1.2
+
+* Fix error when decode hook decodes interface implementation into interface
+  type. [GH-140]
+
+## 1.1.1
+
+* Fix panic that can happen in `decodePtr`
+
+## 1.1.0
+
+* Added `StringToIPHookFunc` to convert `string` to `net.IP` and `net.IPNet` [GH-133]
+* Support struct to struct decoding [GH-137]
+* If source map value is nil, then destination map value is nil (instead of empty)
+* If source slice value is nil, then destination slice value is nil (instead of empty)
+* If source pointer is nil, then destination pointer is set to nil (instead of
+  allocated zero value of type)
+
+## 1.0.0
+
+* Initial tagged stable release.

vendor/github.com/mitchellh/mapstructure/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 Mitchell Hashimoto
+
+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.

vendor/github.com/mitchellh/mapstructure/README.md

@@ -0,0 +1,46 @@
+# mapstructure [![Godoc](https://godoc.org/github.com/mitchellh/mapstructure?status.svg)](https://godoc.org/github.com/mitchellh/mapstructure)
+
+mapstructure is a Go library for decoding generic map values to structures
+and vice versa, while providing helpful error handling.
+
+This library is most useful when decoding values from some data stream (JSON,
+Gob, etc.) where you don't _quite_ know the structure of the underlying data
+until you read a part of it. You can therefore read a `map[string]interface{}`
+and use this library to decode it into the proper underlying native Go
+structure.
+
+## Installation
+
+Standard `go get`:
+
+```
+$ go get github.com/mitchellh/mapstructure
+```
+
+## Usage & Example
+
+For usage and examples see the [Godoc](http://godoc.org/github.com/mitchellh/mapstructure).
+
+The `Decode` function has examples associated with it there.
+
+## But Why?!
+
+Go offers fantastic standard libraries for decoding formats such as JSON.
+The standard method is to have a struct pre-created, and populate that struct
+from the bytes of the encoded format. This is great, but the problem is if
+you have configuration or an encoding that changes slightly depending on
+specific fields. For example, consider this JSON:
+
+```json
+{
+  "type": "person",
+  "name": "Mitchell"
+}
+```
+
+Perhaps we can't populate a specific structure without first reading
+the "type" field from the JSON. We could always do two passes over the
+decoding of the JSON (reading the "type" first, and the rest later).
+However, it is much simpler to just decode this into a `map[string]interface{}`
+structure, read the "type" key, then use something like this library
+to decode it into the proper structure.

vendor/github.com/mitchellh/mapstructure/decode_hooks.go

@@ -0,0 +1,217 @@
+package mapstructure
+
+import (
+	"errors"
+	"fmt"
+	"net"
+	"reflect"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// typedDecodeHook takes a raw DecodeHookFunc (an interface{}) and turns
+// it into the proper DecodeHookFunc type, such as DecodeHookFuncType.
+func typedDecodeHook(h DecodeHookFunc) DecodeHookFunc {
+	// Create variables here so we can reference them with the reflect pkg
+	var f1 DecodeHookFuncType
+	var f2 DecodeHookFuncKind
+
+	// Fill in the variables into this interface and the rest is done
+	// automatically using the reflect package.
+	potential := []interface{}{f1, f2}
+
+	v := reflect.ValueOf(h)
+	vt := v.Type()
+	for _, raw := range potential {
+		pt := reflect.ValueOf(raw).Type()
+		if vt.ConvertibleTo(pt) {
+			return v.Convert(pt).Interface()
+		}
+	}
+
+	return nil
+}
+
+// DecodeHookExec executes the given decode hook. This should be used
+// since it'll naturally degrade to the older backwards compatible DecodeHookFunc
+// that took reflect.Kind instead of reflect.Type.
+func DecodeHookExec(
+	raw DecodeHookFunc,
+	from reflect.Type, to reflect.Type,
+	data interface{}) (interface{}, error) {
+	switch f := typedDecodeHook(raw).(type) {
+	case DecodeHookFuncType:
+		return f(from, to, data)
+	case DecodeHookFuncKind:
+		return f(from.Kind(), to.Kind(), data)
+	default:
+		return nil, errors.New("invalid decode hook signature")
+	}
+}
+
+// ComposeDecodeHookFunc creates a single DecodeHookFunc that
+// automatically composes multiple DecodeHookFuncs.
+//
+// The composed funcs are called in order, with the result of the
+// previous transformation.
+func ComposeDecodeHookFunc(fs ...DecodeHookFunc) DecodeHookFunc {
+	return func(
+		f reflect.Type,
+		t reflect.Type,
+		data interface{}) (interface{}, error) {
+		var err error
+		for _, f1 := range fs {
+			data, err = DecodeHookExec(f1, f, t, data)
+			if err != nil {
+				return nil, err
+			}
+
+			// Modify the from kind to be correct with the new data
+			f = nil
+			if val := reflect.ValueOf(data); val.IsValid() {
+				f = val.Type()
+			}
+		}
+
+		return data, nil
+	}
+}
+
+// StringToSliceHookFunc returns a DecodeHookFunc that converts
+// string to []string by splitting on the given sep.
+func StringToSliceHookFunc(sep string) DecodeHookFunc {
+	return func(
+		f reflect.Kind,
+		t reflect.Kind,
+		data interface{}) (interface{}, error) {
+		if f != reflect.String || t != reflect.Slice {
+			return data, nil
+		}
+
+		raw := data.(string)
+		if raw == "" {
+			return []string{}, nil
+		}
+
+		return strings.Split(raw, sep), nil
+	}
+}
+
+// StringToTimeDurationHookFunc returns a DecodeHookFunc that converts
+// strings to time.Duration.
+func StringToTimeDurationHookFunc() DecodeHookFunc {
+	return func(
+		f reflect.Type,
+		t reflect.Type,
+		data interface{}) (interface{}, error) {
+		if f.Kind() != reflect.String {
+			return data, nil
+		}
+		if t != reflect.TypeOf(time.Duration(5)) {
+			return data, nil
+		}
+
+		// Convert it by parsing
+		return time.ParseDuration(data.(string))
+	}
+}
+
+// StringToIPHookFunc returns a DecodeHookFunc that converts
+// strings to net.IP
+func StringToIPHookFunc() DecodeHookFunc {
+	return func(
+		f reflect.Type,
+		t reflect.Type,
+		data interface{}) (interface{}, error) {
+		if f.Kind() != reflect.String {
+			return data, nil
+		}
+		if t != reflect.TypeOf(net.IP{}) {
+			return data, nil
+		}
+
+		// Convert it by parsing
+		ip := net.ParseIP(data.(string))
+		if ip == nil {
+			return net.IP{}, fmt.Errorf("failed parsing ip %v", data)
+		}
+
+		return ip, nil
+	}
+}
+
+// StringToIPNetHookFunc returns a DecodeHookFunc that converts
+// strings to net.IPNet
+func StringToIPNetHookFunc() DecodeHookFunc {
+	return func(
+		f reflect.Type,
+		t reflect.Type,
+		data interface{}) (interface{}, error) {
+		if f.Kind() != reflect.String {
+			return data, nil
+		}
+		if t != reflect.TypeOf(net.IPNet{}) {
+			return data, nil
+		}
+
+		// Convert it by parsing
+		_, net, err := net.ParseCIDR(data.(string))
+		return net, err
+	}
+}
+
+// StringToTimeHookFunc returns a DecodeHookFunc that converts
+// strings to time.Time.
+func StringToTimeHookFunc(layout string) DecodeHookFunc {
+	return func(
+		f reflect.Type,
+		t reflect.Type,
+		data interface{}) (interface{}, error) {
+		if f.Kind() != reflect.String {
+			return data, nil
+		}
+		if t != reflect.TypeOf(time.Time{}) {
+			return data, nil
+		}
+
+		// Convert it by parsing
+		return time.Parse(layout, data.(string))
+	}
+}
+
+// WeaklyTypedHook is a DecodeHookFunc which adds support for weak typing to
+// the decoder.
+//
+// Note that this is significantly different from the WeaklyTypedInput option
+// of the DecoderConfig.
+func WeaklyTypedHook(
+	f reflect.Kind,
+	t reflect.Kind,
+	data interface{}) (interface{}, error) {
+	dataVal := reflect.ValueOf(data)
+	switch t {
+	case reflect.String:
+		switch f {
+		case reflect.Bool:
+			if dataVal.Bool() {
+				return "1", nil
+			}
+			return "0", nil
+		case reflect.Float32:
+			return strconv.FormatFloat(dataVal.Float(), 'f', -1, 64), nil
+		case reflect.Int:
+			return strconv.FormatInt(dataVal.Int(), 10), nil
+		case reflect.Slice:
+			dataType := dataVal.Type()
+			elemKind := dataType.Elem().Kind()
+			if elemKind == reflect.Uint8 {
+				return string(dataVal.Interface().([]uint8)), nil
+			}
+		case reflect.Uint:
+			return strconv.FormatUint(dataVal.Uint(), 10), nil
+		}
+	}
+
+	return data, nil
+}

vendor/github.com/mitchellh/mapstructure/decode_hooks_test.go

@@ -0,0 +1,323 @@
+package mapstructure
+
+import (
+	"errors"
+	"net"
+	"reflect"
+	"testing"
+	"time"
+)
+
+func TestComposeDecodeHookFunc(t *testing.T) {
+	f1 := func(
+		f reflect.Kind,
+		t reflect.Kind,
+		data interface{}) (interface{}, error) {
+		return data.(string) + "foo", nil
+	}
+
+	f2 := func(
+		f reflect.Kind,
+		t reflect.Kind,
+		data interface{}) (interface{}, error) {
+		return data.(string) + "bar", nil
+	}
+
+	f := ComposeDecodeHookFunc(f1, f2)
+
+	result, err := DecodeHookExec(
+		f, reflect.TypeOf(""), reflect.TypeOf([]byte("")), "")
+	if err != nil {
+		t.Fatalf("bad: %s", err)
+	}
+	if result.(string) != "foobar" {
+		t.Fatalf("bad: %#v", result)
+	}
+}
+
+func TestComposeDecodeHookFunc_err(t *testing.T) {
+	f1 := func(reflect.Kind, reflect.Kind, interface{}) (interface{}, error) {
+		return nil, errors.New("foo")
+	}
+
+	f2 := func(reflect.Kind, reflect.Kind, interface{}) (interface{}, error) {
+		panic("NOPE")
+	}
+
+	f := ComposeDecodeHookFunc(f1, f2)
+
+	_, err := DecodeHookExec(
+		f, reflect.TypeOf(""), reflect.TypeOf([]byte("")), 42)
+	if err.Error() != "foo" {
+		t.Fatalf("bad: %s", err)
+	}
+}
+
+func TestComposeDecodeHookFunc_kinds(t *testing.T) {
+	var f2From reflect.Kind
+
+	f1 := func(
+		f reflect.Kind,
+		t reflect.Kind,
+		data interface{}) (interface{}, error) {
+		return int(42), nil
+	}
+
+	f2 := func(
+		f reflect.Kind,
+		t reflect.Kind,
+		data interface{}) (interface{}, error) {
+		f2From = f
+		return data, nil
+	}
+
+	f := ComposeDecodeHookFunc(f1, f2)
+
+	_, err := DecodeHookExec(
+		f, reflect.TypeOf(""), reflect.TypeOf([]byte("")), "")
+	if err != nil {
+		t.Fatalf("bad: %s", err)
+	}
+	if f2From != reflect.Int {
+		t.Fatalf("bad: %#v", f2From)
+	}
+}
+
+func TestStringToSliceHookFunc(t *testing.T) {
+	f := StringToSliceHookFunc(",")
+
+	strType := reflect.TypeOf("")
+	sliceType := reflect.TypeOf([]byte(""))
+	cases := []struct {
+		f, t   reflect.Type
+		data   interface{}
+		result interface{}
+		err    bool
+	}{
+		{sliceType, sliceType, 42, 42, false},
+		{strType, strType, 42, 42, false},
+		{
+			strType,
+			sliceType,
+			"foo,bar,baz",
+			[]string{"foo", "bar", "baz"},
+			false,
+		},
+		{
+			strType,
+			sliceType,
+			"",
+			[]string{},
+			false,
+		},
+	}
+
+	for i, tc := range cases {
+		actual, err := DecodeHookExec(f, tc.f, tc.t, tc.data)
+		if tc.err != (err != nil) {
+			t.Fatalf("case %d: expected err %#v", i, tc.err)
+		}
+		if !reflect.DeepEqual(actual, tc.result) {
+			t.Fatalf(
+				"case %d: expected %#v, got %#v",
+				i, tc.result, actual)
+		}
+	}
+}
+
+func TestStringToTimeDurationHookFunc(t *testing.T) {
+	f := StringToTimeDurationHookFunc()
+
+	strType := reflect.TypeOf("")
+	timeType := reflect.TypeOf(time.Duration(5))
+	cases := []struct {
+		f, t   reflect.Type
+		data   interface{}
+		result interface{}
+		err    bool
+	}{
+		{strType, timeType, "5s", 5 * time.Second, false},
+		{strType, timeType, "5", time.Duration(0), true},
+		{strType, strType, "5", "5", false},
+	}
+
+	for i, tc := range cases {
+		actual, err := DecodeHookExec(f, tc.f, tc.t, tc.data)
+		if tc.err != (err != nil) {
+			t.Fatalf("case %d: expected err %#v", i, tc.err)
+		}
+		if !reflect.DeepEqual(actual, tc.result) {
+			t.Fatalf(
+				"case %d: expected %#v, got %#v",
+				i, tc.result, actual)
+		}
+	}
+}
+
+func TestStringToTimeHookFunc(t *testing.T) {
+	strType := reflect.TypeOf("")
+	timeType := reflect.TypeOf(time.Time{})
+	cases := []struct {
+		f, t   reflect.Type
+		layout string
+		data   interface{}
+		result interface{}
+		err    bool
+	}{
+		{strType, timeType, time.RFC3339, "2006-01-02T15:04:05Z",
+			time.Date(2006, 1, 2, 15, 4, 5, 0, time.UTC), false},
+		{strType, timeType, time.RFC3339, "5", time.Time{}, true},
+		{strType, strType, time.RFC3339, "5", "5", false},
+	}
+
+	for i, tc := range cases {
+		f := StringToTimeHookFunc(tc.layout)
+		actual, err := DecodeHookExec(f, tc.f, tc.t, tc.data)
+		if tc.err != (err != nil) {
+			t.Fatalf("case %d: expected err %#v", i, tc.err)
+		}
+		if !reflect.DeepEqual(actual, tc.result) {
+			t.Fatalf(
+				"case %d: expected %#v, got %#v",
+				i, tc.result, actual)
+		}
+	}
+}
+
+func TestStringToIPHookFunc(t *testing.T) {
+	strType := reflect.TypeOf("")
+	ipType := reflect.TypeOf(net.IP{})
+	cases := []struct {
+		f, t   reflect.Type
+		data   interface{}
+		result interface{}
+		err    bool
+	}{
+		{strType, ipType, "1.2.3.4",
+			net.IPv4(0x01, 0x02, 0x03, 0x04), false},
+		{strType, ipType, "5", net.IP{}, true},
+		{strType, strType, "5", "5", false},
+	}
+
+	for i, tc := range cases {
+		f := StringToIPHookFunc()
+		actual, err := DecodeHookExec(f, tc.f, tc.t, tc.data)
+		if tc.err != (err != nil) {
+			t.Fatalf("case %d: expected err %#v", i, tc.err)
+		}
+		if !reflect.DeepEqual(actual, tc.result) {
+			t.Fatalf(
+				"case %d: expected %#v, got %#v",
+				i, tc.result, actual)
+		}
+	}
+}
+
+func TestStringToIPNetHookFunc(t *testing.T) {
+	strType := reflect.TypeOf("")
+	ipNetType := reflect.TypeOf(net.IPNet{})
+	var nilNet *net.IPNet = nil
+
+	cases := []struct {
+		f, t   reflect.Type
+		data   interface{}
+		result interface{}
+		err    bool
+	}{
+		{strType, ipNetType, "1.2.3.4/24",
+			&net.IPNet{
+				IP:   net.IP{0x01, 0x02, 0x03, 0x00},
+				Mask: net.IPv4Mask(0xff, 0xff, 0xff, 0x00),
+			}, false},
+		{strType, ipNetType, "5", nilNet, true},
+		{strType, strType, "5", "5", false},
+	}
+
+	for i, tc := range cases {
+		f := StringToIPNetHookFunc()
+		actual, err := DecodeHookExec(f, tc.f, tc.t, tc.data)
+		if tc.err != (err != nil) {
+			t.Fatalf("case %d: expected err %#v", i, tc.err)
+		}
+		if !reflect.DeepEqual(actual, tc.result) {
+			t.Fatalf(
+				"case %d: expected %#v, got %#v",
+				i, tc.result, actual)
+		}
+	}
+}
+
+func TestWeaklyTypedHook(t *testing.T) {
+	var f DecodeHookFunc = WeaklyTypedHook
+
+	boolType := reflect.TypeOf(true)
+	strType := reflect.TypeOf("")
+	sliceType := reflect.TypeOf([]byte(""))
+	cases := []struct {
+		f, t   reflect.Type
+		data   interface{}
+		result interface{}
+		err    bool
+	}{
+		// TO STRING
+		{
+			boolType,
+			strType,
+			false,
+			"0",
+			false,
+		},
+
+		{
+			boolType,
+			strType,
+			true,
+			"1",
+			false,
+		},
+
+		{
+			reflect.TypeOf(float32(1)),
+			strType,
+			float32(7),
+			"7",
+			false,
+		},
+
+		{
+			reflect.TypeOf(int(1)),
+			strType,
+			int(7),
+			"7",
+			false,
+		},
+
+		{
+			sliceType,
+			strType,
+			[]uint8("foo"),
+			"foo",
+			false,
+		},
+
+		{
+			reflect.TypeOf(uint(1)),
+			strType,
+			uint(7),
+			"7",
+			false,
+		},
+	}
+
+	for i, tc := range cases {
+		actual, err := DecodeHookExec(f, tc.f, tc.t, tc.data)
+		if tc.err != (err != nil) {
+			t.Fatalf("case %d: expected err %#v", i, tc.err)
+		}
+		if !reflect.DeepEqual(actual, tc.result) {
+			t.Fatalf(
+				"case %d: expected %#v, got %#v",
+				i, tc.result, actual)
+		}
+	}
+}

vendor/github.com/mitchellh/mapstructure/error.go

@@ -0,0 +1,50 @@
+package mapstructure
+
+import (
+	"errors"
+	"fmt"
+	"sort"
+	"strings"
+)
+
+// Error implements the error interface and can represents multiple
+// errors that occur in the course of a single decode.
+type Error struct {
+	Errors []string
+}
+
+func (e *Error) Error() string {
+	points := make([]string, len(e.Errors))
+	for i, err := range e.Errors {
+		points[i] = fmt.Sprintf("* %s", err)
+	}
+
+	sort.Strings(points)
+	return fmt.Sprintf(
+		"%d error(s) decoding:\n\n%s",
+		len(e.Errors), strings.Join(points, "\n"))
+}
+
+// WrappedErrors implements the errwrap.Wrapper interface to make this
+// return value more useful with the errwrap and go-multierror libraries.
+func (e *Error) WrappedErrors() []error {
+	if e == nil {
+		return nil
+	}
+
+	result := make([]error, len(e.Errors))
+	for i, e := range e.Errors {
+		result[i] = errors.New(e)
+	}
+
+	return result
+}
+
+func appendErrors(errors []string, err error) []string {
+	switch e := err.(type) {
+	case *Error:
+		return append(errors, e.Errors...)
+	default:
+		return append(errors, e.Error())
+	}
+}

vendor/github.com/mitchellh/mapstructure/go.mod

@@ -0,0 +1 @@
+module github.com/mitchellh/mapstructure

vendor/github.com/mitchellh/mapstructure/mapstructure_benchmark_test.go

@@ -0,0 +1,279 @@
+package mapstructure
+
+import (
+	"encoding/json"
+	"testing"
+)
+
+func Benchmark_Decode(b *testing.B) {
+	type Person struct {
+		Name   string
+		Age    int
+		Emails []string
+		Extra  map[string]string
+	}
+
+	input := map[string]interface{}{
+		"name":   "Mitchell",
+		"age":    91,
+		"emails": []string{"one", "two", "three"},
+		"extra": map[string]string{
+			"twitter": "mitchellh",
+		},
+	}
+
+	var result Person
+	for i := 0; i < b.N; i++ {
+		Decode(input, &result)
+	}
+}
+
+// decodeViaJSON takes the map data and passes it through encoding/json to convert it into the
+// given Go native structure pointed to by v. v must be a pointer to a struct.
+func decodeViaJSON(data interface{}, v interface{}) error {
+	// Perform the task by simply marshalling the input into JSON,
+	// then unmarshalling it into target native Go struct.
+	b, err := json.Marshal(data)
+	if err != nil {
+		return err
+	}
+	return json.Unmarshal(b, v)
+}
+
+func Benchmark_DecodeViaJSON(b *testing.B) {
+	type Person struct {
+		Name   string
+		Age    int
+		Emails []string
+		Extra  map[string]string
+	}
+
+	input := map[string]interface{}{
+		"name":   "Mitchell",
+		"age":    91,
+		"emails": []string{"one", "two", "three"},
+		"extra": map[string]string{
+			"twitter": "mitchellh",
+		},
+	}
+
+	var result Person
+	for i := 0; i < b.N; i++ {
+		decodeViaJSON(input, &result)
+	}
+}
+
+func Benchmark_DecodeBasic(b *testing.B) {
+	input := map[string]interface{}{
+		"vstring": "foo",
+		"vint":    42,
+		"Vuint":   42,
+		"vbool":   true,
+		"Vfloat":  42.42,
+		"vsilent": true,
+		"vdata":   42,
+	}
+
+	var result Basic
+	for i := 0; i < b.N; i++ {
+		Decode(input, &result)
+	}
+}
+
+func Benchmark_DecodeEmbedded(b *testing.B) {
+	input := map[string]interface{}{
+		"vstring": "foo",
+		"Basic": map[string]interface{}{
+			"vstring": "innerfoo",
+		},
+		"vunique": "bar",
+	}
+
+	var result Embedded
+	for i := 0; i < b.N; i++ {
+		Decode(input, &result)
+	}
+}
+
+func Benchmark_DecodeTypeConversion(b *testing.B) {
+	input := map[string]interface{}{
+		"IntToFloat":    42,
+		"IntToUint":     42,
+		"IntToBool":     1,
+		"IntToString":   42,
+		"UintToInt":     42,
+		"UintToFloat":   42,
+		"UintToBool":    42,
+		"UintToString":  42,
+		"BoolToInt":     true,
+		"BoolToUint":    true,
+		"BoolToFloat":   true,
+		"BoolToString":  true,
+		"FloatToInt":    42.42,
+		"FloatToUint":   42.42,
+		"FloatToBool":   42.42,
+		"FloatToString": 42.42,
+		"StringToInt":   "42",
+		"StringToUint":  "42",
+		"StringToBool":  "1",
+		"StringToFloat": "42.42",
+		"SliceToMap":    []interface{}{},
+		"MapToSlice":    map[string]interface{}{},
+	}
+
+	var resultStrict TypeConversionResult
+	for i := 0; i < b.N; i++ {
+		Decode(input, &resultStrict)
+	}
+}
+
+func Benchmark_DecodeMap(b *testing.B) {
+	input := map[string]interface{}{
+		"vfoo": "foo",
+		"vother": map[interface{}]interface{}{
+			"foo": "foo",
+			"bar": "bar",
+		},
+	}
+
+	var result Map
+	for i := 0; i < b.N; i++ {
+		Decode(input, &result)
+	}
+}
+
+func Benchmark_DecodeMapOfStruct(b *testing.B) {
+	input := map[string]interface{}{
+		"value": map[string]interface{}{
+			"foo": map[string]string{"vstring": "one"},
+			"bar": map[string]string{"vstring": "two"},
+		},
+	}
+
+	var result MapOfStruct
+	for i := 0; i < b.N; i++ {
+		Decode(input, &result)
+	}
+}
+
+func Benchmark_DecodeSlice(b *testing.B) {
+	input := map[string]interface{}{
+		"vfoo": "foo",
+		"vbar": []string{"foo", "bar", "baz"},
+	}
+
+	var result Slice
+	for i := 0; i < b.N; i++ {
+		Decode(input, &result)
+	}
+}
+
+func Benchmark_DecodeSliceOfStruct(b *testing.B) {
+	input := map[string]interface{}{
+		"value": []map[string]interface{}{
+			{"vstring": "one"},
+			{"vstring": "two"},
+		},
+	}
+
+	var result SliceOfStruct
+	for i := 0; i < b.N; i++ {
+		Decode(input, &result)
+	}
+}
+
+func Benchmark_DecodeWeaklyTypedInput(b *testing.B) {
+	type Person struct {
+		Name   string
+		Age    int
+		Emails []string
+	}
+
+	// This input can come from anywhere, but typically comes from
+	// something like decoding JSON, generated by a weakly typed language
+	// such as PHP.
+	input := map[string]interface{}{
+		"name":   123,                      // number => string
+		"age":    "42",                     // string => number
+		"emails": map[string]interface{}{}, // empty map => empty array
+	}
+
+	var result Person
+	config := &DecoderConfig{
+		WeaklyTypedInput: true,
+		Result:           &result,
+	}
+
+	decoder, err := NewDecoder(config)
+	if err != nil {
+		panic(err)
+	}
+
+	for i := 0; i < b.N; i++ {
+		decoder.Decode(input)
+	}
+}
+
+func Benchmark_DecodeMetadata(b *testing.B) {
+	type Person struct {
+		Name string
+		Age  int
+	}
+
+	input := map[string]interface{}{
+		"name":  "Mitchell",
+		"age":   91,
+		"email": "foo@bar.com",
+	}
+
+	var md Metadata
+	var result Person
+	config := &DecoderConfig{
+		Metadata: &md,
+		Result:   &result,
+	}
+
+	decoder, err := NewDecoder(config)
+	if err != nil {
+		panic(err)
+	}
+
+	for i := 0; i < b.N; i++ {
+		decoder.Decode(input)
+	}
+}
+
+func Benchmark_DecodeMetadataEmbedded(b *testing.B) {
+	input := map[string]interface{}{
+		"vstring": "foo",
+		"vunique": "bar",
+	}
+
+	var md Metadata
+	var result EmbeddedSquash
+	config := &DecoderConfig{
+		Metadata: &md,
+		Result:   &result,
+	}
+
+	decoder, err := NewDecoder(config)
+	if err != nil {
+		b.Fatalf("err: %s", err)
+	}
+
+	for i := 0; i < b.N; i++ {
+		decoder.Decode(input)
+	}
+}
+
+func Benchmark_DecodeTagged(b *testing.B) {
+	input := map[string]interface{}{
+		"foo": "bar",
+		"bar": "value",
+	}
+
+	var result Tagged
+	for i := 0; i < b.N; i++ {
+		Decode(input, &result)
+	}
+}

vendor/github.com/mitchellh/mapstructure/mapstructure_bugs_test.go

@@ -0,0 +1,460 @@
+package mapstructure
+
+import (
+	"reflect"
+	"testing"
+)
+
+// GH-1, GH-10, GH-96
+func TestDecode_NilValue(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name       string
+		in         interface{}
+		target     interface{}
+		out        interface{}
+		metaKeys   []string
+		metaUnused []string
+	}{
+		{
+			"all nil",
+			&map[string]interface{}{
+				"vfoo":   nil,
+				"vother": nil,
+			},
+			&Map{Vfoo: "foo", Vother: map[string]string{"foo": "bar"}},
+			&Map{Vfoo: "", Vother: nil},
+			[]string{"Vfoo", "Vother"},
+			[]string{},
+		},
+		{
+			"partial nil",
+			&map[string]interface{}{
+				"vfoo":   "baz",
+				"vother": nil,
+			},
+			&Map{Vfoo: "foo", Vother: map[string]string{"foo": "bar"}},
+			&Map{Vfoo: "baz", Vother: nil},
+			[]string{"Vfoo", "Vother"},
+			[]string{},
+		},
+		{
+			"partial decode",
+			&map[string]interface{}{
+				"vother": nil,
+			},
+			&Map{Vfoo: "foo", Vother: map[string]string{"foo": "bar"}},
+			&Map{Vfoo: "foo", Vother: nil},
+			[]string{"Vother"},
+			[]string{},
+		},
+		{
+			"unused values",
+			&map[string]interface{}{
+				"vbar":   "bar",
+				"vfoo":   nil,
+				"vother": nil,
+			},
+			&Map{Vfoo: "foo", Vother: map[string]string{"foo": "bar"}},
+			&Map{Vfoo: "", Vother: nil},
+			[]string{"Vfoo", "Vother"},
+			[]string{"vbar"},
+		},
+		{
+			"map interface all nil",
+			&map[interface{}]interface{}{
+				"vfoo":   nil,
+				"vother": nil,
+			},
+			&Map{Vfoo: "foo", Vother: map[string]string{"foo": "bar"}},
+			&Map{Vfoo: "", Vother: nil},
+			[]string{"Vfoo", "Vother"},
+			[]string{},
+		},
+		{
+			"map interface partial nil",
+			&map[interface{}]interface{}{
+				"vfoo":   "baz",
+				"vother": nil,
+			},
+			&Map{Vfoo: "foo", Vother: map[string]string{"foo": "bar"}},
+			&Map{Vfoo: "baz", Vother: nil},
+			[]string{"Vfoo", "Vother"},
+			[]string{},
+		},
+		{
+			"map interface partial decode",
+			&map[interface{}]interface{}{
+				"vother": nil,
+			},
+			&Map{Vfoo: "foo", Vother: map[string]string{"foo": "bar"}},
+			&Map{Vfoo: "foo", Vother: nil},
+			[]string{"Vother"},
+			[]string{},
+		},
+		{
+			"map interface unused values",
+			&map[interface{}]interface{}{
+				"vbar":   "bar",
+				"vfoo":   nil,
+				"vother": nil,
+			},
+			&Map{Vfoo: "foo", Vother: map[string]string{"foo": "bar"}},
+			&Map{Vfoo: "", Vother: nil},
+			[]string{"Vfoo", "Vother"},
+			[]string{"vbar"},
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			config := &DecoderConfig{
+				Metadata:   new(Metadata),
+				Result:     tc.target,
+				ZeroFields: true,
+			}
+
+			decoder, err := NewDecoder(config)
+			if err != nil {
+				t.Fatalf("should not error: %s", err)
+			}
+
+			err = decoder.Decode(tc.in)
+			if err != nil {
+				t.Fatalf("should not error: %s", err)
+			}
+
+			if !reflect.DeepEqual(tc.out, tc.target) {
+				t.Fatalf("%q: TestDecode_NilValue() expected: %#v, got: %#v", tc.name, tc.out, tc.target)
+			}
+
+			if !reflect.DeepEqual(tc.metaKeys, config.Metadata.Keys) {
+				t.Fatalf("%q: Metadata.Keys mismatch expected: %#v, got: %#v", tc.name, tc.metaKeys, config.Metadata.Keys)
+			}
+
+			if !reflect.DeepEqual(tc.metaUnused, config.Metadata.Unused) {
+				t.Fatalf("%q: Metadata.Unused mismatch expected: %#v, got: %#v", tc.name, tc.metaUnused, config.Metadata.Unused)
+			}
+		})
+	}
+}
+
+// #48
+func TestNestedTypePointerWithDefaults(t *testing.T) {
+	t.Parallel()
+
+	input := map[string]interface{}{
+		"vfoo": "foo",
+		"vbar": map[string]interface{}{
+			"vstring": "foo",
+			"vint":    42,
+			"vbool":   true,
+		},
+	}
+
+	result := NestedPointer{
+		Vbar: &Basic{
+			Vuint: 42,
+		},
+	}
+	err := Decode(input, &result)
+	if err != nil {
+		t.Fatalf("got an err: %s", err.Error())
+	}
+
+	if result.Vfoo != "foo" {
+		t.Errorf("vfoo value should be 'foo': %#v", result.Vfoo)
+	}
+
+	if result.Vbar.Vstring != "foo" {
+		t.Errorf("vstring value should be 'foo': %#v", result.Vbar.Vstring)
+	}
+
+	if result.Vbar.Vint != 42 {
+		t.Errorf("vint value should be 42: %#v", result.Vbar.Vint)
+	}
+
+	if result.Vbar.Vbool != true {
+		t.Errorf("vbool value should be true: %#v", result.Vbar.Vbool)
+	}
+
+	if result.Vbar.Vextra != "" {
+		t.Errorf("vextra value should be empty: %#v", result.Vbar.Vextra)
+	}
+
+	// this is the error
+	if result.Vbar.Vuint != 42 {
+		t.Errorf("vuint value should be 42: %#v", result.Vbar.Vuint)
+	}
+
+}
+
+type NestedSlice struct {
+	Vfoo   string
+	Vbars  []Basic
+	Vempty []Basic
+}
+
+// #48
+func TestNestedTypeSliceWithDefaults(t *testing.T) {
+	t.Parallel()
+
+	input := map[string]interface{}{
+		"vfoo": "foo",
+		"vbars": []map[string]interface{}{
+			{"vstring": "foo", "vint": 42, "vbool": true},
+			{"vint": 42, "vbool": true},
+		},
+		"vempty": []map[string]interface{}{
+			{"vstring": "foo", "vint": 42, "vbool": true},
+			{"vint": 42, "vbool": true},
+		},
+	}
+
+	result := NestedSlice{
+		Vbars: []Basic{
+			{Vuint: 42},
+			{Vstring: "foo"},
+		},
+	}
+	err := Decode(input, &result)
+	if err != nil {
+		t.Fatalf("got an err: %s", err.Error())
+	}
+
+	if result.Vfoo != "foo" {
+		t.Errorf("vfoo value should be 'foo': %#v", result.Vfoo)
+	}
+
+	if result.Vbars[0].Vstring != "foo" {
+		t.Errorf("vstring value should be 'foo': %#v", result.Vbars[0].Vstring)
+	}
+	// this is the error
+	if result.Vbars[0].Vuint != 42 {
+		t.Errorf("vuint value should be 42: %#v", result.Vbars[0].Vuint)
+	}
+}
+
+// #48 workaround
+func TestNestedTypeWithDefaults(t *testing.T) {
+	t.Parallel()
+
+	input := map[string]interface{}{
+		"vfoo": "foo",
+		"vbar": map[string]interface{}{
+			"vstring": "foo",
+			"vint":    42,
+			"vbool":   true,
+		},
+	}
+
+	result := Nested{
+		Vbar: Basic{
+			Vuint: 42,
+		},
+	}
+	err := Decode(input, &result)
+	if err != nil {
+		t.Fatalf("got an err: %s", err.Error())
+	}
+
+	if result.Vfoo != "foo" {
+		t.Errorf("vfoo value should be 'foo': %#v", result.Vfoo)
+	}
+
+	if result.Vbar.Vstring != "foo" {
+		t.Errorf("vstring value should be 'foo': %#v", result.Vbar.Vstring)
+	}
+
+	if result.Vbar.Vint != 42 {
+		t.Errorf("vint value should be 42: %#v", result.Vbar.Vint)
+	}
+
+	if result.Vbar.Vbool != true {
+		t.Errorf("vbool value should be true: %#v", result.Vbar.Vbool)
+	}
+
+	if result.Vbar.Vextra != "" {
+		t.Errorf("vextra value should be empty: %#v", result.Vbar.Vextra)
+	}
+
+	// this is the error
+	if result.Vbar.Vuint != 42 {
+		t.Errorf("vuint value should be 42: %#v", result.Vbar.Vuint)
+	}
+
+}
+
+// #67 panic() on extending slices (decodeSlice with disabled ZeroValues)
+func TestDecodeSliceToEmptySliceWOZeroing(t *testing.T) {
+	t.Parallel()
+
+	type TestStruct struct {
+		Vfoo []string
+	}
+
+	decode := func(m interface{}, rawVal interface{}) error {
+		config := &DecoderConfig{
+			Metadata:   nil,
+			Result:     rawVal,
+			ZeroFields: false,
+		}
+
+		decoder, err := NewDecoder(config)
+		if err != nil {
+			return err
+		}
+
+		return decoder.Decode(m)
+	}
+
+	{
+		input := map[string]interface{}{
+			"vfoo": []string{"1"},
+		}
+
+		result := &TestStruct{}
+
+		err := decode(input, &result)
+		if err != nil {
+			t.Fatalf("got an err: %s", err.Error())
+		}
+	}
+
+	{
+		input := map[string]interface{}{
+			"vfoo": []string{"1"},
+		}
+
+		result := &TestStruct{
+			Vfoo: []string{},
+		}
+
+		err := decode(input, &result)
+		if err != nil {
+			t.Fatalf("got an err: %s", err.Error())
+		}
+	}
+
+	{
+		input := map[string]interface{}{
+			"vfoo": []string{"2", "3"},
+		}
+
+		result := &TestStruct{
+			Vfoo: []string{"1"},
+		}
+
+		err := decode(input, &result)
+		if err != nil {
+			t.Fatalf("got an err: %s", err.Error())
+		}
+	}
+}
+
+// #70
+func TestNextSquashMapstructure(t *testing.T) {
+	data := &struct {
+		Level1 struct {
+			Level2 struct {
+				Foo string
+			} `mapstructure:",squash"`
+		} `mapstructure:",squash"`
+	}{}
+	err := Decode(map[interface{}]interface{}{"foo": "baz"}, &data)
+	if err != nil {
+		t.Fatalf("should not error: %s", err)
+	}
+	if data.Level1.Level2.Foo != "baz" {
+		t.Fatal("value should be baz")
+	}
+}
+
+type ImplementsInterfacePointerReceiver struct {
+	Name string
+}
+
+func (i *ImplementsInterfacePointerReceiver) DoStuff() {}
+
+type ImplementsInterfaceValueReceiver string
+
+func (i ImplementsInterfaceValueReceiver) DoStuff() {}
+
+// GH-140 Type error when using DecodeHook to decode into interface
+func TestDecode_DecodeHookInterface(t *testing.T) {
+	t.Parallel()
+
+	type Interface interface {
+		DoStuff()
+	}
+	type DecodeIntoInterface struct {
+		Test Interface
+	}
+
+	testData := map[string]string{"test": "test"}
+
+	stringToPointerInterfaceDecodeHook := func(from, to reflect.Type, data interface{}) (interface{}, error) {
+		if from.Kind() != reflect.String {
+			return data, nil
+		}
+
+		if to != reflect.TypeOf((*Interface)(nil)).Elem() {
+			return data, nil
+		}
+		// Ensure interface is satisfied
+		var impl Interface = &ImplementsInterfacePointerReceiver{data.(string)}
+		return impl, nil
+	}
+
+	stringToValueInterfaceDecodeHook := func(from, to reflect.Type, data interface{}) (interface{}, error) {
+		if from.Kind() != reflect.String {
+			return data, nil
+		}
+
+		if to != reflect.TypeOf((*Interface)(nil)).Elem() {
+			return data, nil
+		}
+		// Ensure interface is satisfied
+		var impl Interface = ImplementsInterfaceValueReceiver(data.(string))
+		return impl, nil
+	}
+
+	{
+		decodeInto := new(DecodeIntoInterface)
+
+		decoder, _ := NewDecoder(&DecoderConfig{
+			DecodeHook: stringToPointerInterfaceDecodeHook,
+			Result:     decodeInto,
+		})
+
+		err := decoder.Decode(testData)
+		if err != nil {
+			t.Fatalf("Decode returned error: %s", err)
+		}
+
+		expected := &ImplementsInterfacePointerReceiver{"test"}
+		if !reflect.DeepEqual(decodeInto.Test, expected) {
+			t.Fatalf("expected: %#v (%T), got: %#v (%T)", decodeInto.Test, decodeInto.Test, expected, expected)
+		}
+	}
+
+	{
+		decodeInto := new(DecodeIntoInterface)
+
+		decoder, _ := NewDecoder(&DecoderConfig{
+			DecodeHook: stringToValueInterfaceDecodeHook,
+			Result:     decodeInto,
+		})
+
+		err := decoder.Decode(testData)
+		if err != nil {
+			t.Fatalf("Decode returned error: %s", err)
+		}
+
+		expected := ImplementsInterfaceValueReceiver("test")
+		if !reflect.DeepEqual(decodeInto.Test, expected) {
+			t.Fatalf("expected: %#v (%T), got: %#v (%T)", decodeInto.Test, decodeInto.Test, expected, expected)
+		}
+	}
+}

vendor/github.com/mitchellh/mapstructure/mapstructure_examples_test.go

@@ -0,0 +1,203 @@
+package mapstructure
+
+import (
+	"fmt"
+)
+
+func ExampleDecode() {
+	type Person struct {
+		Name   string
+		Age    int
+		Emails []string
+		Extra  map[string]string
+	}
+
+	// This input can come from anywhere, but typically comes from
+	// something like decoding JSON where we're not quite sure of the
+	// struct initially.
+	input := map[string]interface{}{
+		"name":   "Mitchell",
+		"age":    91,
+		"emails": []string{"one", "two", "three"},
+		"extra": map[string]string{
+			"twitter": "mitchellh",
+		},
+	}
+
+	var result Person
+	err := Decode(input, &result)
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("%#v", result)
+	// Output:
+	// mapstructure.Person{Name:"Mitchell", Age:91, Emails:[]string{"one", "two", "three"}, Extra:map[string]string{"twitter":"mitchellh"}}
+}
+
+func ExampleDecode_errors() {
+	type Person struct {
+		Name   string
+		Age    int
+		Emails []string
+		Extra  map[string]string
+	}
+
+	// This input can come from anywhere, but typically comes from
+	// something like decoding JSON where we're not quite sure of the
+	// struct initially.
+	input := map[string]interface{}{
+		"name":   123,
+		"age":    "bad value",
+		"emails": []int{1, 2, 3},
+	}
+
+	var result Person
+	err := Decode(input, &result)
+	if err == nil {
+		panic("should have an error")
+	}
+
+	fmt.Println(err.Error())
+	// Output:
+	// 5 error(s) decoding:
+	//
+	// * 'Age' expected type 'int', got unconvertible type 'string'
+	// * 'Emails[0]' expected type 'string', got unconvertible type 'int'
+	// * 'Emails[1]' expected type 'string', got unconvertible type 'int'
+	// * 'Emails[2]' expected type 'string', got unconvertible type 'int'
+	// * 'Name' expected type 'string', got unconvertible type 'int'
+}
+
+func ExampleDecode_metadata() {
+	type Person struct {
+		Name string
+		Age  int
+	}
+
+	// This input can come from anywhere, but typically comes from
+	// something like decoding JSON where we're not quite sure of the
+	// struct initially.
+	input := map[string]interface{}{
+		"name":  "Mitchell",
+		"age":   91,
+		"email": "foo@bar.com",
+	}
+
+	// For metadata, we make a more advanced DecoderConfig so we can
+	// more finely configure the decoder that is used. In this case, we
+	// just tell the decoder we want to track metadata.
+	var md Metadata
+	var result Person
+	config := &DecoderConfig{
+		Metadata: &md,
+		Result:   &result,
+	}
+
+	decoder, err := NewDecoder(config)
+	if err != nil {
+		panic(err)
+	}
+
+	if err := decoder.Decode(input); err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("Unused keys: %#v", md.Unused)
+	// Output:
+	// Unused keys: []string{"email"}
+}
+
+func ExampleDecode_weaklyTypedInput() {
+	type Person struct {
+		Name   string
+		Age    int
+		Emails []string
+	}
+
+	// This input can come from anywhere, but typically comes from
+	// something like decoding JSON, generated by a weakly typed language
+	// such as PHP.
+	input := map[string]interface{}{
+		"name":   123,                      // number => string
+		"age":    "42",                     // string => number
+		"emails": map[string]interface{}{}, // empty map => empty array
+	}
+
+	var result Person
+	config := &DecoderConfig{
+		WeaklyTypedInput: true,
+		Result:           &result,
+	}
+
+	decoder, err := NewDecoder(config)
+	if err != nil {
+		panic(err)
+	}
+
+	err = decoder.Decode(input)
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("%#v", result)
+	// Output: mapstructure.Person{Name:"123", Age:42, Emails:[]string{}}
+}
+
+func ExampleDecode_tags() {
+	// Note that the mapstructure tags defined in the struct type
+	// can indicate which fields the values are mapped to.
+	type Person struct {
+		Name string `mapstructure:"person_name"`
+		Age  int    `mapstructure:"person_age"`
+	}
+
+	input := map[string]interface{}{
+		"person_name": "Mitchell",
+		"person_age":  91,
+	}
+
+	var result Person
+	err := Decode(input, &result)
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("%#v", result)
+	// Output:
+	// mapstructure.Person{Name:"Mitchell", Age:91}
+}
+
+func ExampleDecode_embeddedStruct() {
+	// Squashing multiple embedded structs is allowed using the squash tag.
+	// This is demonstrated by creating a composite struct of multiple types
+	// and decoding into it. In this case, a person can carry with it both
+	// a Family and a Location, as well as their own FirstName.
+	type Family struct {
+		LastName string
+	}
+	type Location struct {
+		City string
+	}
+	type Person struct {
+		Family    `mapstructure:",squash"`
+		Location  `mapstructure:",squash"`
+		FirstName string
+	}
+
+	input := map[string]interface{}{
+		"FirstName": "Mitchell",
+		"LastName":  "Hashimoto",
+		"City":      "San Francisco",
+	}
+
+	var result Person
+	err := Decode(input, &result)
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("%s %s, %s", result.FirstName, result.LastName, result.City)
+	// Output:
+	// Mitchell Hashimoto, San Francisco
+}