Merge pull request #536 from magodo/config_source_consul_support_array
Config source consul support 1st array
This commit is contained in:
commit
5ee7140aa3
@ -1,39 +1,85 @@
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package json
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import (
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"reflect"
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"testing"
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"github.com/micro/go-micro/config/source"
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)
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func TestValues(t *testing.T) {
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data := []byte(`{"foo": "bar", "baz": {"bar": "cat"}}`)
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emptyStr := ""
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testData := []struct {
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csdata []byte
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path []string
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value string
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accepter interface{}
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value interface{}
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}{
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{
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[]byte(`{"foo": "bar", "baz": {"bar": "cat"}}`),
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[]string{"foo"},
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emptyStr,
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"bar",
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},
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{
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[]byte(`{"foo": "bar", "baz": {"bar": "cat"}}`),
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[]string{"baz", "bar"},
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emptyStr,
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"cat",
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},
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}
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for idx, test := range testData {
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values, err := newValues(&source.ChangeSet{
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Data: data,
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Data: test.csdata,
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})
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if err != nil {
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t.Fatal(err)
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}
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for _, test := range testData {
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if v := values.Get(test.path...).String(""); v != test.value {
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t.Fatalf("Expected %s got %s for path %v", test.value, v, test.path)
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err = values.Get(test.path...).Scan(&test.accepter)
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if err != nil {
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t.Fatal(err)
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}
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if test.accepter != test.value {
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t.Fatalf("No.%d Expected %v got %v for path %v", idx, test.value, test.accepter, test.path)
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}
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}
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}
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func TestStructArray(t *testing.T) {
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type T struct {
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Foo string
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}
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emptyTSlice := []T{}
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testData := []struct {
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csdata []byte
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accepter []T
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value []T
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}{
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{
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[]byte(`[{"foo": "bar"}]`),
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emptyTSlice,
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[]T{T{Foo: "bar"}},
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},
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}
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for idx, test := range testData {
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values, err := newValues(&source.ChangeSet{
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Data: test.csdata,
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})
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if err != nil {
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t.Fatal(err)
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}
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err = values.Get().Scan(&test.accepter)
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if err != nil {
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t.Fatal(err)
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}
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if !reflect.DeepEqual(test.accepter, test.value) {
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t.Fatalf("No.%d Expected %v got %v", idx, test.value, test.accepter)
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}
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}
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}
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@ -8,40 +8,80 @@ import (
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"github.com/micro/go-micro/config/encoder"
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)
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type configValue interface {
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Value() interface{}
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Decode(encoder.Encoder, []byte) error
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}
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type configArrayValue struct {
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v []interface{}
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}
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func (a *configArrayValue) Value() interface{} { return a.v }
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func (a *configArrayValue) Decode(e encoder.Encoder, b []byte) error {
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return e.Decode(b, &a.v)
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}
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type configMapValue struct {
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v map[string]interface{}
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}
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func (m *configMapValue) Value() interface{} { return m.v }
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func (m *configMapValue) Decode(e encoder.Encoder, b []byte) error {
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return e.Decode(b, &m.v)
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}
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func makeMap(e encoder.Encoder, kv api.KVPairs, stripPrefix string) (map[string]interface{}, error) {
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data := make(map[string]interface{})
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// consul guarantees lexicographic order, so no need to sort
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for _, v := range kv {
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pathString := strings.TrimPrefix(strings.TrimPrefix(v.Key, strings.TrimPrefix(stripPrefix, "/")), "/")
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var val map[string]interface{}
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if pathString == "" {
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continue
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}
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var val configValue
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var err error
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// ensure a valid value is stored at this location
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if len(v.Value) > 0 {
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if err := e.Decode(v.Value, &val); err != nil {
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// try to decode into map value or array value
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arrayV := &configArrayValue{v: []interface{}{}}
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mapV := &configMapValue{v: map[string]interface{}{}}
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switch {
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case arrayV.Decode(e, v.Value) == nil:
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val = arrayV
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case mapV.Decode(e, v.Value) == nil:
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val = mapV
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default:
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return nil, fmt.Errorf("faild decode value. path: %s, error: %s", pathString, err)
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}
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}
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// set target at the root
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target := data
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// then descend to the target location, creating as we go, if need be
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if pathString != "" {
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path := strings.Split(pathString, "/")
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// find (or create) the location we want to put this value at
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for _, dir := range path {
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// find (or create) the leaf node we want to put this value at
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for _, dir := range path[:len(path)-1] {
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if _, ok := target[dir]; !ok {
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target[dir] = make(map[string]interface{})
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}
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target = target[dir].(map[string]interface{})
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}
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}
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leafDir := path[len(path)-1]
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// copy over the keys from the value
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for k := range val {
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target[k] = val[k]
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switch val.(type) {
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case *configArrayValue:
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target[leafDir] = val.Value()
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case *configMapValue:
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target[leafDir] = make(map[string]interface{})
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target = target[leafDir].(map[string]interface{})
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mapv := val.Value().(map[string]interface{})
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for k := range mapv {
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target[k] = mapv[k]
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}
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}
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}
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