Add docker images auto check and setup support for WAMR-IDE (#1882)

1. Add docker images auto check and setup support for WAMR-IDE
2. Fix bug that the code goes on when user skips install

test-tools/wamr-ide/VSCode-Extension/src/utilities/dockerUtilities.ts

@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ */
+
+import * as vscode from 'vscode';
+import * as cp from 'child_process';
+import * as path from 'path';
+import * as fs from 'fs';
+import { getWAMRExtensionVersion } from './lldbUtilities';
+import { downloadFile, unzipFile } from './directoryUtilities';
+import { SelectionOfPrompt, Status } from '../constants';
+
+const DOCKER_IMAGES_TEM_FOLDER_NAME = 'docker-resource';
+
+type SelectionStatus = SelectionOfPrompt | Status;
+
+const execShell = (cmd: string) =>
+    new Promise<string>((resolve, reject) => {
+        cp.exec(cmd, (error, result) => {
+            if (error) {
+                return reject(error);
+            }
+            return resolve(result);
+        });
+    });
+
+export async function promptSetupDockerImages(
+    context: vscode.ExtensionContext
+): Promise<SelectionStatus> {
+    const extensionPath = context.extensionPath;
+    const response = await vscode.window.showWarningMessage(
+        'Necessary docker images are not found. Setup now?',
+        SelectionOfPrompt.setUp,
+        SelectionOfPrompt.skip
+    );
+
+    if (response === SelectionOfPrompt.skip) {
+        return response;
+    }
+
+    const downloadUrlArray = getDockerImagesDownloadUrl(context);
+
+    const destinationFolder = path.resolve(
+        extensionPath,
+        'resource',
+        DOCKER_IMAGES_TEM_FOLDER_NAME
+    );
+
+    if (!fs.existsSync(destinationFolder)) {
+        fs.mkdirSync(destinationFolder);
+    }
+
+    vscode.window.showInformationMessage(`Downloading Docker Images...`);
+
+    for (const url of downloadUrlArray) {
+        const imageZipName = path.basename(url);
+        const imageStorePath = path.join(destinationFolder, imageZipName);
+        await downloadFile(url, imageStorePath);
+
+        /**
+         * extract docker image tar package to
+         * '${destinationFolder}'
+         */
+        const dockerImageFile = await unzipFile(imageStorePath, filename =>
+            path.join(destinationFolder, filename)
+        );
+        /* give access before loading */
+        dockerImageFile.forEach(file => fs.chmodSync(file, '0775'));
+
+        /**NOTE - load docker image tar package to host
+         *        right now there are just one file
+         *        `docker-image-name.tar` inside so we can
+         *        directly use files[0] here, should be modified
+         *        if the package's files change
+         */
+        await execShell(`docker load -i ${dockerImageFile[0]}`);
+    }
+
+    /* remove the DOCKER_IMAGES_TEM_FOLDER */
+    fs.rmSync(destinationFolder, { recursive: true, force: true });
+
+    vscode.window.showInformationMessage(
+        `Docker images are ready, please run '$docker images' to check.`
+    );
+
+    return Status.done;
+}
+
+export async function checkIfDockerStarted(): Promise<boolean> {
+    try {
+        await execShell('docker images');
+        return true;
+    } catch (e) {
+        vscode.window.showWarningMessage((e as Error).message);
+        return false;
+    }
+}
+
+export async function checkIfDockerImagesExist(
+    context: vscode.ExtensionContext
+): Promise<boolean> {
+    try {
+        /* the tag of images is equal to extension's version */
+        const imageTag = getWAMRExtensionVersion(context);
+        await execShell(
+            `docker image inspect wasm-debug-server:${imageTag} wasm-toolchain:${imageTag}`
+        );
+        return true;
+    } catch (e) {
+        return false;
+    }
+}
+
+function getDockerImagesDownloadUrl(
+    context: vscode.ExtensionContext
+): string[] {
+    const wamrVersion = getWAMRExtensionVersion(context);
+    const wamrReleaseUrl = `https://github.com/bytecodealliance/wasm-micro-runtime/releases/download/WAMR`;
+
+    return [
+        `${wamrReleaseUrl}-${wamrVersion}/wasm-debug-server-${wamrVersion}.zip`,
+        `${wamrReleaseUrl}-${wamrVersion}/wasm-toolchain-${wamrVersion}.zip`,
+    ];
+}