terraformDummyRepo2/vendor/github.com/vmihailenco/msgpack/v4/README.md

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2022-04-03 04:07:16 +00:00
# MessagePack encoding for Golang
[![Build Status](https://travis-ci.org/vmihailenco/msgpack.svg?branch=v2)](https://travis-ci.org/vmihailenco/msgpack)
[![GoDoc](https://godoc.org/github.com/vmihailenco/msgpack?status.svg)](https://godoc.org/github.com/vmihailenco/msgpack)
Supports:
- Primitives, arrays, maps, structs, time.Time and interface{}.
- Appengine *datastore.Key and datastore.Cursor.
- [CustomEncoder](https://godoc.org/github.com/vmihailenco/msgpack#example-CustomEncoder)/CustomDecoder interfaces for custom encoding.
- [Extensions](https://godoc.org/github.com/vmihailenco/msgpack#example-RegisterExt) to encode type information.
- Renaming fields via `msgpack:"my_field_name"` and alias via `msgpack:"alias:another_name"`.
- Omitting individual empty fields via `msgpack:",omitempty"` tag or all [empty fields in a struct](https://godoc.org/github.com/vmihailenco/msgpack#example-Marshal--OmitEmpty).
- [Map keys sorting](https://godoc.org/github.com/vmihailenco/msgpack#Encoder.SortMapKeys).
- Encoding/decoding all [structs as arrays](https://godoc.org/github.com/vmihailenco/msgpack#Encoder.UseArrayForStructs) or [individual structs](https://godoc.org/github.com/vmihailenco/msgpack#example-Marshal--AsArray).
- [Encoder.UseJSONTag](https://godoc.org/github.com/vmihailenco/msgpack#Encoder.UseJSONTag) with [Decoder.UseJSONTag](https://godoc.org/github.com/vmihailenco/msgpack#Decoder.UseJSONTag) can turn msgpack into drop-in replacement for JSON.
- Simple but very fast and efficient [queries](https://godoc.org/github.com/vmihailenco/msgpack#example-Decoder-Query).
API docs: https://godoc.org/github.com/vmihailenco/msgpack.
Examples: https://godoc.org/github.com/vmihailenco/msgpack#pkg-examples.
## Installation
This project uses [Go Modules](https://github.com/golang/go/wiki/Modules) and semantic import versioning since v4:
``` shell
go mod init github.com/my/repo
go get github.com/vmihailenco/msgpack/v4
```
## Quickstart
``` go
import "github.com/vmihailenco/msgpack/v4"
func ExampleMarshal() {
type Item struct {
Foo string
}
b, err := msgpack.Marshal(&Item{Foo: "bar"})
if err != nil {
panic(err)
}
var item Item
err = msgpack.Unmarshal(b, &item)
if err != nil {
panic(err)
}
fmt.Println(item.Foo)
// Output: bar
}
```
## Benchmark
```
BenchmarkStructVmihailencoMsgpack-4 200000 12814 ns/op 2128 B/op 26 allocs/op
BenchmarkStructUgorjiGoMsgpack-4 100000 17678 ns/op 3616 B/op 70 allocs/op
BenchmarkStructUgorjiGoCodec-4 100000 19053 ns/op 7346 B/op 23 allocs/op
BenchmarkStructJSON-4 20000 69438 ns/op 7864 B/op 26 allocs/op
BenchmarkStructGOB-4 10000 104331 ns/op 14664 B/op 278 allocs/op
```
## Howto
Please go through [examples](https://godoc.org/github.com/vmihailenco/msgpack#pkg-examples) to get an idea how to use this package.
## See also
- [Golang PostgreSQL ORM](https://github.com/go-pg/pg)
- [Golang message task queue](https://github.com/vmihailenco/taskq)