78 lines
1.4 KiB
Go
78 lines
1.4 KiB
Go
// Package yaml provides a yaml codec
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package yaml // import "go.unistack.org/micro-codec-yaml/v3"
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import (
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pb "go.unistack.org/micro-proto/v3/codec"
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"go.unistack.org/micro/v3/codec"
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rutil "go.unistack.org/micro/v3/util/reflect"
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yaml "gopkg.in/yaml.v3"
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)
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type yamlCodec struct {
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opts codec.Options
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}
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var _ codec.Codec = &yamlCodec{}
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func (c *yamlCodec) Marshal(v interface{}, opts ...codec.Option) ([]byte, error) {
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if v == nil {
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return nil, nil
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}
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options := c.opts
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for _, o := range opts {
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o(&options)
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}
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if options.Flatten {
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if nv, nerr := rutil.StructFieldByTag(v, options.TagName, "flatten"); nerr == nil {
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v = nv
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}
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}
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switch m := v.(type) {
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case *codec.Frame:
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return m.Data, nil
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case *pb.Frame:
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return m.Data, nil
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}
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return yaml.Marshal(v)
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}
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func (c *yamlCodec) Unmarshal(b []byte, v interface{}, opts ...codec.Option) error {
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if len(b) == 0 || v == nil {
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return nil
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}
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options := c.opts
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for _, o := range opts {
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o(&options)
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}
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if options.Flatten {
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if nv, nerr := rutil.StructFieldByTag(v, options.TagName, "flatten"); nerr == nil {
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v = nv
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}
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}
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switch m := v.(type) {
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case *codec.Frame:
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m.Data = b
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return nil
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case *pb.Frame:
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m.Data = b
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return nil
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}
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return yaml.Unmarshal(b, v)
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}
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func (c *yamlCodec) String() string {
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return "yaml"
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}
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func NewCodec(opts ...codec.Option) *yamlCodec {
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return &yamlCodec{opts: codec.NewOptions(opts...)}
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}
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