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@cross-border-bridge/function-channel

v2.1.0

Published

FunctionChannel for Web application

Downloads

286

Readme

  • FunctionChannelのTypeScript用の実装を提供します
  • Node.jsで利用することを想定しています

Setup

package.json

    "dependencies": {
        "@cross-border-bridge/function-channel": "~2.1.0"
    },

Usage

step 1: import

import * as fc from "@cross-border-bridge/function-channel";

step 2: リモート側から実行できるメソッドを定義したクラスを準備

class MyClassTS {
    foo(a1: string, a2: string, a3: string): string {
        return a1 + a2 + a3;
    }
}

step 3: FunctionChannelを準備

使用するDataChannelインスタンスを指定してFunctionChannelを生成します。

    var functionChannel: fc.FunctionChannel = fc.FunctionChannelFactory.create(dataChannel);

step 4: 準備したクラスの実体をbind

step 2 で準備したクラスの実体を FunctionChannel#bind で登録することで, リモート側からメソッドを呼び出すことができる状態になります。

    var myObject: MyClassTS = new MyClassTS();
    functionChannel.bind("MyClassTS", myObject);

FunctionChannel#unbindbind 状態を解除することができます。

step 5: リモート側のメソッドを実行

FunctionChannel#invoke でリモート側に bind されているオブジェクトのメソッドを実行することができます。

    functionChannel.invoke("MyClassJava", "foo", ["arg1", "arg2", "arg3"], (error?, result?) => {
        if (error) {
            実行に失敗した場合の処理
        } else {
            実行に成功した場合の処理(戻り値が result に格納されている)
        }
    });

実行結果を確認する必要がない場合は, callback の指定を省略してください。

    functionChannel.invoke("MyClassJava", "foo", ["arg1", "arg2", "arg3"]);

callback を省略した場合, FunctionChannel は PUSH で要求を送信するため, 実行が正常にできたのかを確認することができません。

step 6: 破棄

FunctionChannel#destroy で破棄できます

    functionChannel.destroy();

FunctionChannelをdestroyしても下位層(DataChannel, DataBus)のdestroyは行われません。

License