Upgrade server dependencies, manage them with govendor

This commit is contained in:
Ken-Håvard Lieng 2017-04-18 03:02:51 +02:00
parent ebee2746d6
commit 971278e7e5
1748 changed files with 196165 additions and 194500 deletions

View file

@ -87,7 +87,7 @@ func dirUnix() (string, error) {
cmd := exec.Command("getent", "passwd", strconv.Itoa(os.Getuid()))
cmd.Stdout = &stdout
if err := cmd.Run(); err != nil {
// If "getent" is missing, ignore it
// If the error is ErrNotFound, we ignore it. Otherwise, return it.
if err != exec.ErrNotFound {
return "", err
}
@ -118,6 +118,11 @@ func dirUnix() (string, error) {
}
func dirWindows() (string, error) {
// First prefer the HOME environmental variable
if home := os.Getenv("HOME"); home != "" {
return home, nil
}
drive := os.Getenv("HOMEDRIVE")
path := os.Getenv("HOMEPATH")
home := drive + path

View file

@ -1,112 +0,0 @@
package homedir
import (
"fmt"
"os"
"os/user"
"testing"
)
func patchEnv(key, value string) func() {
bck := os.Getenv(key)
deferFunc := func() {
os.Setenv(key, bck)
}
os.Setenv(key, value)
return deferFunc
}
func BenchmarkDir(b *testing.B) {
// We do this for any "warmups"
for i := 0; i < 10; i++ {
Dir()
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
Dir()
}
}
func TestDir(t *testing.T) {
u, err := user.Current()
if err != nil {
t.Fatalf("err: %s", err)
}
dir, err := Dir()
if err != nil {
t.Fatalf("err: %s", err)
}
if u.HomeDir != dir {
t.Fatalf("%#v != %#v", u.HomeDir, dir)
}
}
func TestExpand(t *testing.T) {
u, err := user.Current()
if err != nil {
t.Fatalf("err: %s", err)
}
cases := []struct {
Input string
Output string
Err bool
}{
{
"/foo",
"/foo",
false,
},
{
"~/foo",
fmt.Sprintf("%s/foo", u.HomeDir),
false,
},
{
"",
"",
false,
},
{
"~",
u.HomeDir,
false,
},
{
"~foo/foo",
"",
true,
},
}
for _, tc := range cases {
actual, err := Expand(tc.Input)
if (err != nil) != tc.Err {
t.Fatalf("Input: %#v\n\nErr: %s", tc.Input, err)
}
if actual != tc.Output {
t.Fatalf("Input: %#v\n\nOutput: %#v", tc.Input, actual)
}
}
DisableCache = true
defer func() { DisableCache = false }()
defer patchEnv("HOME", "/custom/path/")()
expected := "/custom/path/foo/bar"
actual, err := Expand("~/foo/bar")
if err != nil {
t.Errorf("No error is expected, got: %v", err)
} else if actual != "/custom/path/foo/bar" {
t.Errorf("Expected: %v; actual: %v", expected, actual)
}
}

View file

@ -72,7 +72,10 @@ func ComposeDecodeHookFunc(fs ...DecodeHookFunc) DecodeHookFunc {
}
// Modify the from kind to be correct with the new data
f = reflect.ValueOf(data).Type()
f = nil
if val := reflect.ValueOf(data); val.IsValid() {
f = val.Type()
}
}
return data, nil

View file

@ -1,229 +0,0 @@
package mapstructure
import (
"errors"
"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 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)
}
}
}

View file

@ -1,5 +1,5 @@
// The mapstructure package exposes functionality to convert an
// abitrary map[string]interface{} into a native Go structure.
// arbitrary map[string]interface{} into a native Go structure.
//
// The Go structure can be arbitrarily complex, containing slices,
// other structs, etc. and the decoder will properly decode nested
@ -8,6 +8,7 @@
package mapstructure
import (
"encoding/json"
"errors"
"fmt"
"reflect"
@ -68,6 +69,9 @@ type DecoderConfig struct {
// - empty array = empty map and vice versa
// - negative numbers to overflowed uint values (base 10)
// - slice of maps to a merged map
// - single values are converted to slices if required. Each
// element is weakly decoded. For example: "4" can become []int{4}
// if the target type is an int slice.
//
WeaklyTypedInput bool
@ -201,7 +205,7 @@ func (d *Decoder) decode(name string, data interface{}, val reflect.Value) error
d.config.DecodeHook,
dataVal.Type(), val.Type(), data)
if err != nil {
return err
return fmt.Errorf("error decoding '%s': %s", name, err)
}
}
@ -228,6 +232,8 @@ func (d *Decoder) decode(name string, data interface{}, val reflect.Value) error
err = d.decodePtr(name, data, val)
case reflect.Slice:
err = d.decodeSlice(name, data, val)
case reflect.Func:
err = d.decodeFunc(name, data, val)
default:
// If we reached this point then we weren't able to decode it
return fmt.Errorf("%s: unsupported type: %s", name, dataKind)
@ -246,6 +252,10 @@ func (d *Decoder) decode(name string, data interface{}, val reflect.Value) error
// value to "data" of that type.
func (d *Decoder) decodeBasic(name string, data interface{}, val reflect.Value) error {
dataVal := reflect.ValueOf(data)
if !dataVal.IsValid() {
dataVal = reflect.Zero(val.Type())
}
dataValType := dataVal.Type()
if !dataValType.AssignableTo(val.Type()) {
return fmt.Errorf(
@ -302,6 +312,7 @@ func (d *Decoder) decodeString(name string, data interface{}, val reflect.Value)
func (d *Decoder) decodeInt(name string, data interface{}, val reflect.Value) error {
dataVal := reflect.ValueOf(data)
dataKind := getKind(dataVal)
dataType := dataVal.Type()
switch {
case dataKind == reflect.Int:
@ -323,6 +334,14 @@ func (d *Decoder) decodeInt(name string, data interface{}, val reflect.Value) er
} else {
return fmt.Errorf("cannot parse '%s' as int: %s", name, err)
}
case dataType.PkgPath() == "encoding/json" && dataType.Name() == "Number":
jn := data.(json.Number)
i, err := jn.Int64()
if err != nil {
return fmt.Errorf(
"error decoding json.Number into %s: %s", name, err)
}
val.SetInt(i)
default:
return fmt.Errorf(
"'%s' expected type '%s', got unconvertible type '%s'",
@ -409,6 +428,7 @@ func (d *Decoder) decodeBool(name string, data interface{}, val reflect.Value) e
func (d *Decoder) decodeFloat(name string, data interface{}, val reflect.Value) error {
dataVal := reflect.ValueOf(data)
dataKind := getKind(dataVal)
dataType := dataVal.Type()
switch {
case dataKind == reflect.Int:
@ -430,6 +450,14 @@ func (d *Decoder) decodeFloat(name string, data interface{}, val reflect.Value)
} else {
return fmt.Errorf("cannot parse '%s' as float: %s", name, err)
}
case dataType.PkgPath() == "encoding/json" && dataType.Name() == "Number":
jn := data.(json.Number)
i, err := jn.Float64()
if err != nil {
return fmt.Errorf(
"error decoding json.Number into %s: %s", name, err)
}
val.SetFloat(i)
default:
return fmt.Errorf(
"'%s' expected type '%s', got unconvertible type '%s'",
@ -523,7 +551,12 @@ func (d *Decoder) decodePtr(name string, data interface{}, val reflect.Value) er
// into that. Then set the value of the pointer to this type.
valType := val.Type()
valElemType := valType.Elem()
realVal := reflect.New(valElemType)
realVal := val
if realVal.IsNil() || d.config.ZeroFields {
realVal = reflect.New(valElemType)
}
if err := d.decode(name, data, reflect.Indirect(realVal)); err != nil {
return err
}
@ -532,6 +565,19 @@ func (d *Decoder) decodePtr(name string, data interface{}, val reflect.Value) er
return nil
}
func (d *Decoder) decodeFunc(name string, data interface{}, val reflect.Value) error {
// Create an element of the concrete (non pointer) type and decode
// into that. Then set the value of the pointer to this type.
dataVal := reflect.Indirect(reflect.ValueOf(data))
if val.Type() != dataVal.Type() {
return fmt.Errorf(
"'%s' expected type '%s', got unconvertible type '%s'",
name, val.Type(), dataVal.Type())
}
val.Set(dataVal)
return nil
}
func (d *Decoder) decodeSlice(name string, data interface{}, val reflect.Value) error {
dataVal := reflect.Indirect(reflect.ValueOf(data))
dataValKind := dataVal.Kind()
@ -539,26 +585,44 @@ func (d *Decoder) decodeSlice(name string, data interface{}, val reflect.Value)
valElemType := valType.Elem()
sliceType := reflect.SliceOf(valElemType)
// Check input type
if dataValKind != reflect.Array && dataValKind != reflect.Slice {
// Accept empty map instead of array/slice in weakly typed mode
if d.config.WeaklyTypedInput && dataVal.Kind() == reflect.Map && dataVal.Len() == 0 {
val.Set(reflect.MakeSlice(sliceType, 0, 0))
return nil
} else {
valSlice := val
if valSlice.IsNil() || d.config.ZeroFields {
// Check input type
if dataValKind != reflect.Array && dataValKind != reflect.Slice {
if d.config.WeaklyTypedInput {
switch {
// Empty maps turn into empty slices
case dataValKind == reflect.Map:
if dataVal.Len() == 0 {
val.Set(reflect.MakeSlice(sliceType, 0, 0))
return nil
}
// All other types we try to convert to the slice type
// and "lift" it into it. i.e. a string becomes a string slice.
default:
// Just re-try this function with data as a slice.
return d.decodeSlice(name, []interface{}{data}, val)
}
}
return fmt.Errorf(
"'%s': source data must be an array or slice, got %s", name, dataValKind)
}
}
// Make a new slice to hold our result, same size as the original data.
valSlice := reflect.MakeSlice(sliceType, dataVal.Len(), dataVal.Len())
}
// Make a new slice to hold our result, same size as the original data.
valSlice = reflect.MakeSlice(sliceType, dataVal.Len(), dataVal.Len())
}
// Accumulate any errors
errors := make([]string, 0)
for i := 0; i < dataVal.Len(); i++ {
currentData := dataVal.Index(i).Interface()
for valSlice.Len() <= i {
valSlice = reflect.Append(valSlice, reflect.Zero(valElemType))
}
currentField := valSlice.Index(i)
fieldName := fmt.Sprintf("%s[%d]", name, i)
@ -628,14 +692,6 @@ func (d *Decoder) decodeStruct(name string, data interface{}, val reflect.Value)
fieldType := structType.Field(i)
fieldKind := fieldType.Type.Kind()
if fieldType.Anonymous {
if fieldKind != reflect.Struct {
errors = appendErrors(errors,
fmt.Errorf("%s: unsupported type: %s", fieldType.Name, fieldKind))
continue
}
}
// If "squash" is specified in the tag, we squash the field down.
squash := false
tagParts := strings.Split(fieldType.Tag.Get(d.config.TagName), ",")
@ -675,7 +731,7 @@ func (d *Decoder) decodeStruct(name string, data interface{}, val reflect.Value)
if !rawMapVal.IsValid() {
// Do a slower search by iterating over each key and
// doing case-insensitive search.
for dataValKey, _ := range dataValKeys {
for dataValKey := range dataValKeys {
mK, ok := dataValKey.Interface().(string)
if !ok {
// Not a string key
@ -723,7 +779,7 @@ func (d *Decoder) decodeStruct(name string, data interface{}, val reflect.Value)
if d.config.ErrorUnused && len(dataValKeysUnused) > 0 {
keys := make([]string, 0, len(dataValKeysUnused))
for rawKey, _ := range dataValKeysUnused {
for rawKey := range dataValKeysUnused {
keys = append(keys, rawKey.(string))
}
sort.Strings(keys)
@ -738,7 +794,7 @@ func (d *Decoder) decodeStruct(name string, data interface{}, val reflect.Value)
// Add the unused keys to the list of unused keys if we're tracking metadata
if d.config.Metadata != nil {
for rawKey, _ := range dataValKeysUnused {
for rawKey := range dataValKeysUnused {
key := rawKey.(string)
if name != "" {
key = fmt.Sprintf("%s.%s", name, key)

View file

@ -1,279 +0,0 @@
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)
}
}

View file

@ -1,47 +0,0 @@
package mapstructure
import "testing"
// GH-1
func TestDecode_NilValue(t *testing.T) {
input := map[string]interface{}{
"vfoo": nil,
"vother": nil,
}
var result Map
err := Decode(input, &result)
if err != nil {
t.Fatalf("should not error: %s", err)
}
if result.Vfoo != "" {
t.Fatalf("value should be default: %s", result.Vfoo)
}
if result.Vother != nil {
t.Fatalf("Vother should be nil: %s", result.Vother)
}
}
// GH-10
func TestDecode_mapInterfaceInterface(t *testing.T) {
input := map[interface{}]interface{}{
"vfoo": nil,
"vother": nil,
}
var result Map
err := Decode(input, &result)
if err != nil {
t.Fatalf("should not error: %s", err)
}
if result.Vfoo != "" {
t.Fatalf("value should be default: %s", result.Vfoo)
}
if result.Vother != nil {
t.Fatalf("Vother should be nil: %s", result.Vother)
}
}

View file

@ -1,203 +0,0 @@
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
}

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