51 lines
1.5 KiB
TypeScript
51 lines
1.5 KiB
TypeScript
// MessageDecoder.ts
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import * as pb from './pbExport'
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export class MessageDecoder {
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// 消息ID与消息类的映射表
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private static _messageClasses: Map<number, (buffer: Uint8Array) => any> = new Map()
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/**
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* 注册消息类（启动时调用）
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* @param msgId 消息ID
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* @param decoder 解码函数（如 pb.ReqUserLogin.decode）
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*/
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public static Register<T>(msgId: number, decoder: (buffer: Uint8Array) => T): void {
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this._messageClasses.set(msgId, decoder)
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}
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/**
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* 解码消息（根据ID动态实例化对应消息类）
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* @param msgId 消息ID
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* @param buffer 原始消息（Uint8Array）
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* @returns 解码后的消息对象
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*/
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public static Decode(msgId: number, buffer: Uint8Array): [any, Error] {
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try {
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const decoder = this._messageClasses.get(msgId)
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if (!decoder) {
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return [null, new Error(`未注册的消息ID: ${msgId}`)]
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}
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// 实例化消息类并解码数据
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const instance = decoder(buffer)
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return [instance, null]
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} catch (err) {
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return [null, new Error(`解消息: ${msgId} 失败。err:${err}`)]
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}
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}
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/**
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* 字节流转换成Hex码
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* @param buffer 原始消息（Uint8Array）
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* @returns 字节流转换成Hex码
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*/
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public static Uint8ToHex(buffer: Uint8Array): string {
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return Array.from(buffer)
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.map((byte) => byte.toString(16).padStart(2, '0'))
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.join(' ')
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}
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}
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MessageDecoder.Register(pb.MsgId.ReqUserLoginId, pb.ReqUserLogin.decode)
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MessageDecoder.Register(pb.MsgId.RspUserLoginId, pb.RspUserLogin.decode)
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