foreign/go/samples/shared/messages.go

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package sharedDemoContracts

import "encoding/json"

type ISerializableMessage interface {
	ToJson() string
	ToBytes() []byte
}

type Envelope struct {
	MessageType string `json:"message_type"`
	Payload     string `json:"payload"`
}

func (env *Envelope) New(messageType string, payload ISerializableMessage) *Envelope {
	jsonPayload, _ := json.Marshal(payload)
	return &Envelope{
		MessageType: messageType,
		Payload:     string(jsonPayload),
	}
}

type OrderCreated struct {
	Id           int     `json:"id"`
	CurrencyPair string  `json:"currency_pair"`
	Price        float64 `json:"price"`
	Quantity     float64 `json:"quantity"`
	Side         string  `json:"side"`
	Timestamp    uint64  `json:"timestamp"`
}

func (order *OrderCreated) ToJson() string {
	envelope := Envelope{}
	env := envelope.New("order_created", order)
	jsonPayload, _ := json.Marshal(env)
	return string(jsonPayload)
}

func (order *OrderCreated) ToBytes() []byte {
	envelope := Envelope{}
	env := envelope.New("order_created", order)
	jsonPayload, _ := json.Marshal(env)
	return jsonPayload
}

type OrderConfirmed struct {
	Id        int     `json:"id"`
	Price     float64 `json:"price"`
	Timestamp uint64  `json:"timestamp"`
}

func (order *OrderConfirmed) ToJson() string {
	envelope := Envelope{}
	env := envelope.New("order_confirmed", order)
	jsonPayload, _ := json.Marshal(env)
	return string(jsonPayload)
}

func (order *OrderConfirmed) ToBytes() []byte {
	envelope := Envelope{}
	env := envelope.New("order_confirmed", order)
	jsonPayload, _ := json.Marshal(env)
	return jsonPayload
}

type OrderRejected struct {
	Id        int    `json:"id"`
	Timestamp uint64 `json:"timestamp"`
	Reason    string `json:"reason"`
}

func (order *OrderRejected) ToJson() string {
	envelope := Envelope{}
	env := envelope.New("order_rejected", order)
	jsonPayload, _ := json.Marshal(env)
	return string(jsonPayload)
}

func (order *OrderRejected) ToBytes() []byte {
	envelope := Envelope{}
	env := envelope.New("order_rejected", order)
	jsonPayload, _ := json.Marshal(env)
	return jsonPayload
}