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added TickDataProviderMsgp to encode/decode TickDataProvider interface
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,150 @@ | ||
| package entities | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "reflect" | ||
|
|
||
| "github.com/tinylib/msgp/msgp" | ||
| ) | ||
|
|
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| var ( | ||
| // Mapping from string representation of a TickDataProvider concrete type to the concrete type itself. | ||
| // The string representation is used as type discriminator when encoding/decoding TickDataProvider. | ||
| tickDataProviderImplMap = map[string]reflect.Type{} | ||
| ) | ||
|
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| // RegisterTickDataProviderImpl registers the concrete types of an TickDataProvider. | ||
| // This function is not thread-safe and should be only call in init(). | ||
| func RegisterTickDataProviderImpl(provider TickDataProvider) { | ||
| if _, ok := provider.(msgp.Encodable); !ok { | ||
| panic("expected provider to implement msgp.Encodable") | ||
| } | ||
| if _, ok := provider.(msgp.Decodable); !ok { | ||
| panic("expected provider to implement msgp.Decodable") | ||
| } | ||
| if _, ok := provider.(msgp.Marshaler); !ok { | ||
| panic("expected provider to implement msgp.Marshaler") | ||
| } | ||
| if _, ok := provider.(msgp.Unmarshaler); !ok { | ||
| panic("expected provider to implement msgp.Unmarshaler") | ||
| } | ||
| if _, ok := provider.(msgp.Sizer); !ok { | ||
| panic("expected provider to implement msgp.Sizer") | ||
| } | ||
| typ := reflect.ValueOf(provider).Elem().Type() | ||
| tickDataProviderImplMap[typ.String()] = typ | ||
| } | ||
|
|
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| // TickDataProviderWrapper is a wrapper of TickDataProvider and is implemented msgp.Encodable, msgp.Decodable, msgp.Marshaler, msgp.Unmarshaler, and msgp.Sizer | ||
| type TickDataProviderWrapper struct { | ||
| TickDataProvider | ||
| } | ||
|
|
||
| func NewTickDataProviderWrapper(provider TickDataProvider) *TickDataProviderWrapper { | ||
| if provider == nil { | ||
| return nil | ||
| } | ||
| return &TickDataProviderWrapper{provider} | ||
| } | ||
|
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| // Get the inner TickDataProvider, return nil if TickDataProviderWrapper is nil | ||
| func (p *TickDataProviderWrapper) Get() TickDataProvider { | ||
| if p == nil { | ||
| return nil | ||
| } | ||
| return p.TickDataProvider | ||
| } | ||
|
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| // EncodeMsg implements msgp.Encodable | ||
| func (p *TickDataProviderWrapper) EncodeMsg(en *msgp.Writer) (err error) { | ||
| typ := reflect.ValueOf(p.TickDataProvider).Elem().Type() | ||
| err = en.WriteString(typ.String()) | ||
| if err != nil { | ||
| return | ||
| } | ||
|
|
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| if _, ok := tickDataProviderImplMap[typ.String()]; !ok { | ||
| err = fmt.Errorf("unregistered type %s", typ.String()) | ||
| return | ||
| } | ||
|
|
||
| err = p.TickDataProvider.(msgp.Encodable).EncodeMsg(en) | ||
| if err != nil { | ||
| err = msgp.WrapError(err, "TickDataProvider") | ||
| return | ||
| } | ||
| return | ||
| } | ||
|
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||
| // DecodeMsg implements msgp.Decodable | ||
| func (p *TickDataProviderWrapper) DecodeMsg(dc *msgp.Reader) (err error) { | ||
| var typStr string | ||
| typStr, err = dc.ReadString() | ||
| if err != nil { | ||
| return | ||
| } | ||
|
|
||
| typ, ok := tickDataProviderImplMap[typStr] | ||
| if !ok { | ||
| err = fmt.Errorf("unregistered type %s", typStr) | ||
| return | ||
| } | ||
|
|
||
| providerVal := reflect.New(typ) | ||
| err = providerVal.Interface().(msgp.Decodable).DecodeMsg(dc) | ||
| if err != nil { | ||
| err = msgp.WrapError(err, "TickDataProviderMsgp") | ||
| return | ||
| } | ||
| p.TickDataProvider = providerVal.Interface().(TickDataProvider) | ||
| return | ||
| } | ||
|
|
||
| // MarshalMsg implements msgp.Marshaler | ||
| func (p *TickDataProviderWrapper) MarshalMsg(b []byte) (o []byte, err error) { | ||
| o = msgp.Require(b, p.Msgsize()) | ||
| typ := reflect.ValueOf(p.TickDataProvider).Elem().Type() | ||
| o = msgp.AppendString(o, typ.String()) | ||
|
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| if _, ok := tickDataProviderImplMap[typ.String()]; !ok { | ||
| err = fmt.Errorf("unregistered type %s", typ.String()) | ||
| return | ||
| } | ||
|
|
||
| o, err = p.TickDataProvider.(msgp.Marshaler).MarshalMsg(o) | ||
| if err != nil { | ||
| err = msgp.WrapError(err, "TickDataProvider") | ||
| return | ||
| } | ||
| return | ||
| } | ||
|
|
||
| // UnmarshalMsg implements msgp.Unmarshaler | ||
| func (p *TickDataProviderWrapper) UnmarshalMsg(bts []byte) (o []byte, err error) { | ||
| var typStr string | ||
| typStr, bts, err = msgp.ReadStringBytes(bts) | ||
| if err != nil { | ||
| return | ||
| } | ||
|
|
||
| typ, ok := tickDataProviderImplMap[typStr] | ||
| if !ok { | ||
| err = fmt.Errorf("unregistered type %s", typStr) | ||
| return | ||
| } | ||
|
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||
| providerVal := reflect.New(typ) | ||
| bts, err = providerVal.Interface().(msgp.Unmarshaler).UnmarshalMsg(bts) | ||
| if err != nil { | ||
| err = msgp.WrapError(err, "TickDataProvider") | ||
| return | ||
| } | ||
| p.TickDataProvider = providerVal.Interface().(TickDataProvider) | ||
| return | ||
| } | ||
|
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| // Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message | ||
| func (p *TickDataProviderWrapper) Msgsize() int { | ||
| typ := reflect.ValueOf(p.TickDataProvider).Elem().Type() | ||
| return msgp.StringPrefixSize + len(typ.String()) + p.TickDataProvider.(msgp.Sizer).Msgsize() | ||
| } |
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