Add another Gulp task to fetch all platform packages

We fetch these from an upstream feed that has authenticated feeds
as upstreams of it; this is an easy way to ensure everything is
cached properly for all platforms.

CONTRIBUTING.md

@@ -49,7 +49,7 @@ VSIXs can be created using the gulp command `gulp vsix:release:package`.  This w
 
 To update the version of the roslyn server used by the extension do the following:
 1.  Find the the Roslyn signed build you want from [here](https://dnceng.visualstudio.com/internal/_build?definitionId=327&_a=summary).  Typically the latest successful build of main is fine.
-2.  In the official build stage, look for the `Publish Assets` step.  In there you will see it publishing the `Microsoft.CodeAnalysis.LanguageServer` package with some version, e.g. `4.6.0-3.23158.4`.  Take note of that version number.
+2.  In the official build stage, look for the `Publish Assets` step.  In there you will see it publishing the `Microsoft.CodeAnalysis.LanguageServer.neutral` package with some version, e.g. `4.6.0-3.23158.4`.  Take note of that version number.
 3.  In the [package.json](package.json) inside the `defaults` section update the `roslyn` key to point to the version number you found above in step 2.
-4.  Build and test the change (make sure to run `gulp installDependencies` to get the new version!).  If everything looks good, submit a PR.
-    * Adding new package versions might require authentication, run with the `--interactive` flag to login.  You may need to install [azure artifacts nuget credential provider](https://github.com/microsoft/artifacts-credprovider#installation-on-windows) to run interactive authentication.
+4.  Ensure that version of the package is in the proper feeds by running `gulp updateRoslynVersion`. Note: you may need to install the [Azure Artifacts NuGet Credential Provider](https://github.com/microsoft/artifacts-credprovider#installation-on-windows) to run interactive authentication.
+5.  Build and test the change. If everything looks good, submit a PR.

tasks/offlinePackagingTasks.ts

@@ -73,8 +73,48 @@ gulp.task('installDependencies', async () => {
     }
 });
 
+gulp.task(
+    'updateRoslynVersion',
+    // Run the fetch of all packages, and then also installDependencies after
+    gulp.series(async () => {
+        const packageJSON = getPackageJSON();
+
+        // Fetch the neutral package that we don't otherwise have in our platform list
+        await acquireRoslyn(packageJSON, undefined, true);
+
+        // And now fetch each platform specific
+        for (const p of platformSpecificPackages) {
+            await acquireRoslyn(packageJSON, p.platformInfo, true);
+        }
+    }, 'installDependencies')
+);
+
 // Install Tasks
 async function installRoslyn(packageJSON: any, platformInfo?: PlatformInformation) {
+    const { packagePath, serverPlatform } = await acquireRoslyn(packageJSON, platformInfo, false);
+
+    // Get the directory containing the server executable for the current platform.
+    const serverExecutableDirectory = path.join(packagePath, 'content', 'LanguageServer', serverPlatform);
+    if (!fs.existsSync(serverExecutableDirectory)) {
+        throw new Error(`Failed to find server executable directory at ${serverExecutableDirectory}`);
+    }
+
+    console.log(`Extracting Roslyn executables from ${serverExecutableDirectory}`);
+
+    // Copy the files to the language server directory.
+    fs.mkdirSync(languageServerDirectory);
+    fsextra.copySync(serverExecutableDirectory, languageServerDirectory);
+    const languageServerDll = path.join(languageServerDirectory, 'Microsoft.CodeAnalysis.LanguageServer.dll');
+    if (!fs.existsSync(languageServerDll)) {
+        throw new Error(`Failed to copy server executable`);
+    }
+}
+
+async function acquireRoslyn(
+    packageJSON: any,
+    platformInfo: PlatformInformation | undefined,
+    interactive: boolean
+): Promise<{ packagePath: string; serverPlatform: string }> {
     const roslynVersion = packageJSON.defaults.roslyn;
 
     // Find the matching server RID for the current platform.
@@ -91,24 +131,10 @@ async function installRoslyn(packageJSON: any, platformInfo?: PlatformInformatio
 
     const packagePath = await acquireNugetPackage(
         `Microsoft.CodeAnalysis.LanguageServer.${serverPlatform}`,
-        roslynVersion
+        roslynVersion,
+        interactive
     );
-
-    // Get the directory containing the server executable for the current platform.
-    const serverExecutableDirectory = path.join(packagePath, 'content', 'LanguageServer', serverPlatform);
-    if (!fs.existsSync(serverExecutableDirectory)) {
-        throw new Error(`Failed to find server executable directory at ${serverExecutableDirectory}`);
-    }
-
-    console.log(`Extracting Roslyn executables from ${serverExecutableDirectory}`);
-
-    // Copy the files to the language server directory.
-    fs.mkdirSync(languageServerDirectory);
-    fsextra.copySync(serverExecutableDirectory, languageServerDirectory);
-    const languageServerDll = path.join(languageServerDirectory, 'Microsoft.CodeAnalysis.LanguageServer.dll');
-    if (!fs.existsSync(languageServerDll)) {
-        throw new Error(`Failed to copy server executable`);
-    }
+    return { packagePath, serverPlatform };
 }
 
 async function installRazor(packageJSON: any, platformInfo: PlatformInformation) {
@@ -142,7 +168,7 @@ async function installPackageJsonDependency(
     }
 }
 
-async function acquireNugetPackage(packageName: string, packageVersion: string): Promise<string> {
+async function acquireNugetPackage(packageName: string, packageVersion: string, interactive: boolean): Promise<string> {
     packageName = packageName.toLocaleLowerCase();
     const packageOutputPath = path.join(nugetTempPath, packageName, packageVersion);
     if (fs.existsSync(packageOutputPath)) {
@@ -157,7 +183,8 @@ async function acquireNugetPackage(packageName: string, packageVersion: string):
         `/p:PackageName=${packageName}`,
         `/p:PackageVersion=${packageVersion}`,
     ];
-    if (argv.interactive) {
+
+    if (interactive) {
         dotnetArgs.push('--interactive');
     }