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[FIX] Issue #202 and #190 #206

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[FIX] Issue #202 and #190 #206

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7674e75
fix(request): ensure the precision isn't lost when decoding numeric v…
quetzyg Apr 5, 2021
1774d8b
tests(request): update an expected ID value to a high value
quetzyg Apr 5, 2021
7ea5e24
tests(request): full coverage of the handleNumeric() function
quetzyg Apr 5, 2021
cb512b4
fix(request): ensure numeric values are all handled as json.Number in…
quetzyg Apr 11, 2021
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119 changes: 57 additions & 62 deletions request.go
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,6 @@ import (
"fmt"
"io"
"reflect"
"strconv"
"strings"
"time"
)
Expand Down Expand Up @@ -95,7 +94,10 @@ func newErrUnsupportedPtrType(rf reflect.Value, t reflect.Type, structField refl
func UnmarshalPayload(in io.Reader, model interface{}) error {
payload := new(OnePayload)

if err := json.NewDecoder(in).Decode(payload); err != nil {
decoder := json.NewDecoder(in)
decoder.UseNumber()

if err := decoder.Decode(payload); err != nil {
return err
}

Expand All @@ -116,7 +118,10 @@ func UnmarshalPayload(in io.Reader, model interface{}) error {
func UnmarshalManyPayload(in io.Reader, t reflect.Type) ([]interface{}, error) {
payload := new(ManyPayload)

if err := json.NewDecoder(in).Decode(payload); err != nil {
decoder := json.NewDecoder(in)
decoder.UseNumber()

if err := decoder.Decode(payload); err != nil {
return nil, err
}

Expand Down Expand Up @@ -209,18 +214,9 @@ func unmarshalNode(data *Node, model reflect.Value, included *map[string]*Node)
continue
}

// Value was not a string... only other supported type was a numeric,
// which would have been sent as a float value.
floatValue, err := strconv.ParseFloat(data.ID, 64)
if err != nil {
// Could not convert the value in the "id" attr to a float
er = ErrBadJSONAPIID
break
}

// Convert the numeric float to one of the supported ID numeric types
// (int[8,16,32,64] or uint[8,16,32,64])
idValue, err := handleNumeric(floatValue, fieldType.Type, fieldValue)
idValue, err := handleNumeric(json.Number(data.ID), fieldType.Type, fieldValue)
if err != nil {
// We had a JSON float (numeric), but our field was not one of the
// allowed numeric types
Expand Down Expand Up @@ -271,7 +267,10 @@ func unmarshalNode(data *Node, model reflect.Value, included *map[string]*Node)
buf := bytes.NewBuffer(nil)

json.NewEncoder(buf).Encode(data.Relationships[args[1]])
json.NewDecoder(buf).Decode(relationship)

decoder := json.NewDecoder(buf)
decoder.UseNumber()
decoder.Decode(relationship)

data := relationship.Data
models := reflect.New(fieldValue.Type()).Elem()
Expand All @@ -298,10 +297,11 @@ func unmarshalNode(data *Node, model reflect.Value, included *map[string]*Node)

buf := bytes.NewBuffer(nil)

json.NewEncoder(buf).Encode(
data.Relationships[args[1]],
)
json.NewDecoder(buf).Decode(relationship)
json.NewEncoder(buf).Encode(data.Relationships[args[1]])

decoder := json.NewDecoder(buf)
decoder.UseNumber()
decoder.Decode(relationship)

/*
http://jsonapi.org/format/#document-resource-object-relationships
Expand Down Expand Up @@ -416,9 +416,12 @@ func unmarshalAttribute(
return
}

// JSON value was a float (numeric)
if value.Kind() == reflect.Float64 {
value, err = handleNumeric(attribute, fieldType, fieldValue)
switch attribute.(type) {
case json.Number:
value, err = handleNumeric(attribute.(json.Number), fieldType, fieldValue)
return
case float64:
value, err = handleNumeric(json.Number(fmt.Sprint(attribute)), fieldType, fieldValue)
return
}

Expand Down Expand Up @@ -495,27 +498,26 @@ func handleTime(attribute interface{}, args []string, fieldValue reflect.Value)
return reflect.ValueOf(t), nil
}

var at int64
switch v.Interface().(type) {
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Contributor Author

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The original logic was kept, since we're still checking the type of the attribute, while the previous/following checks are done to the fieldValue kind.

I wonder if we should check the fieldValue kind here as well for consistency.

case json.Number:
i, err := v.Interface().(json.Number).Int64()
if err == nil {
return reflect.ValueOf(time.Unix(i, 0)), nil
}

if v.Kind() == reflect.Float64 {
at = int64(v.Interface().(float64))
} else if v.Kind() == reflect.Int {
at = v.Int()
} else {
return reflect.ValueOf(time.Now()), ErrInvalidTime
f, err := v.Interface().(json.Number).Float64()
if err == nil {
return reflect.ValueOf(time.Unix(int64(f), 0)), nil
}
}

t := time.Unix(at, 0)

return reflect.ValueOf(t), nil
return reflect.ValueOf(time.Now()), ErrInvalidTime
}

func handleNumeric(
attribute interface{},
attribute json.Number,
fieldType reflect.Type,
fieldValue reflect.Value) (reflect.Value, error) {
v := reflect.ValueOf(attribute)
floatValue := v.Interface().(float64)

var kind reflect.Kind
if fieldValue.Kind() == reflect.Ptr {
Expand All @@ -524,50 +526,41 @@ func handleNumeric(
kind = fieldType.Kind()
}

var numericValue reflect.Value
i, err := attribute.Int64()

switch kind {
case reflect.Int:
n := int(floatValue)
numericValue = reflect.ValueOf(&n)
return reflect.ValueOf(int(i)), err
case reflect.Int8:
n := int8(floatValue)
numericValue = reflect.ValueOf(&n)
return reflect.ValueOf(int8(i)), err
case reflect.Int16:
n := int16(floatValue)
numericValue = reflect.ValueOf(&n)
return reflect.ValueOf(int16(i)), err
case reflect.Int32:
n := int32(floatValue)
numericValue = reflect.ValueOf(&n)
return reflect.ValueOf(int32(i)), err
case reflect.Int64:
n := int64(floatValue)
numericValue = reflect.ValueOf(&n)
return reflect.ValueOf(i), err
case reflect.Uint:
n := uint(floatValue)
numericValue = reflect.ValueOf(&n)
return reflect.ValueOf(uint(i)), err
case reflect.Uint8:
n := uint8(floatValue)
numericValue = reflect.ValueOf(&n)
return reflect.ValueOf(uint8(i)), err
case reflect.Uint16:
n := uint16(floatValue)
numericValue = reflect.ValueOf(&n)
return reflect.ValueOf(uint16(i)), err
case reflect.Uint32:
n := uint32(floatValue)
numericValue = reflect.ValueOf(&n)
return reflect.ValueOf(uint32(i)), err
case reflect.Uint64:
n := uint64(floatValue)
numericValue = reflect.ValueOf(&n)
return reflect.ValueOf(uint64(i)), err
}

f, err := attribute.Float64()

switch kind {
case reflect.Float32:
n := float32(floatValue)
numericValue = reflect.ValueOf(&n)
return reflect.ValueOf(float32(f)), err
case reflect.Float64:
n := floatValue
numericValue = reflect.ValueOf(&n)
default:
return reflect.Value{}, ErrUnknownFieldNumberType
return reflect.ValueOf(f), err
}

return numericValue, nil
return reflect.Value{}, ErrUnknownFieldNumberType
}

func handlePointer(
Expand All @@ -580,6 +573,8 @@ func handlePointer(
var concreteVal reflect.Value

switch cVal := attribute.(type) {
case json.Number:
return handleNumeric(attribute.(json.Number), fieldType, fieldValue)
case string:
concreteVal = reflect.ValueOf(&cVal)
case bool:
Expand Down
4 changes: 2 additions & 2 deletions request_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -303,7 +303,7 @@ func TestUnmarshalSetsID(t *testing.T) {
t.Fatal(err)
}

if out.ID != 2 {
if out.ID != 9223372036854775807 {
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Contributor Author

@quetzyg quetzyg Apr 5, 2021 •
edited
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If we used this value previously, the test would fail;

t.Fatalf("Did not set ID on dst interface")
}
}
Expand Down Expand Up @@ -1070,7 +1070,7 @@ func samplePayload() io.Reader {
func samplePayloadWithID() io.Reader {
payload := &OnePayload{
Data: &Node{
ID: "2",
ID: "9223372036854775807",
Type: "blogs",
Attributes: map[string]interface{}{
"title": "New blog",
Expand Down