Merge pull request #270 from snickler/main

Updated dotnet-install scripts to latest version

.github/workflows/check-dist.yml

@@ -0,0 +1,51 @@
+# `dist/index.js` is a special file in Actions.
+# When you reference an action with `uses:` in a workflow,
+# `index.js` is the code that will run.
+# For our project, we generate this file through a build process from other source files.
+# We need to make sure the checked-in `index.js` actually matches what we expect it to be.
+name: Check dist/
+
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    paths-ignore:
+      - '**.md'
+  workflow_dispatch:
+
+jobs:
+  check-dist:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set Node.js 12.x
+        uses: actions/setup-node@v1
+        with:
+          node-version: 12.x
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Rebuild the dist/ directory
+        run: npm run build
+
+      - name: Compare the expected and actual dist/ directories
+        run: |
+          if [ "$(git diff --ignore-space-at-eol dist/ | wc -l)" -gt "0" ]; then
+            echo "Detected uncommitted changes after build.  See status below:"
+            git diff
+            exit 1
+          fi
+        id: diff
+
+      # If index.js was different than expected, upload the expected version as an artifact
+      - uses: actions/upload-artifact@v2
+        if: ${{ failure() && steps.diff.conclusion == 'failure' }}
+        with:
+          name: dist
+          path: dist/

.github/workflows/licensed.yml

@@ -1,8 +1,13 @@
 name: Licensed
 
 on:
-  push: {branches: main}
-  pull_request: {branches: main}
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+  workflow_dispatch:
 
 jobs:
   test:
@@ -14,7 +19,7 @@ jobs:
       - name: Install licensed
         run: |
           cd $RUNNER_TEMP
-          curl -Lfs -o licensed.tar.gz https://github.com/github/licensed/releases/download/2.12.2/licensed-2.12.2-linux-x64.tar.gz
+          curl -Lfs -o licensed.tar.gz https://github.com/github/licensed/releases/download/3.3.1/licensed-3.3.1-linux-x64.tar.gz
           sudo tar -xzf licensed.tar.gz
           sudo mv licensed /usr/local/bin/licensed
-      - run: licensed status
+      - run: licensed status

.github/workflows/workflow.yml

@@ -32,6 +32,29 @@ jobs:
     - name: Verify no unstaged changes
       if: runner.os != 'windows'
       run: __tests__/verify-no-unstaged-changes.sh
+  
+  test-setup-multiple-versions:
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      fail-fast: false
+      matrix:
+        operating-system: [ubuntu-latest, windows-latest, macOS-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Clear toolcache
+        shell: pwsh
+        run: __tests__/clear-toolcache.ps1 ${{ runner.os }}
+      - name: Setup dotnet 2.2.402 and 3.1.404
+        uses: ./
+        with:
+          dotnet-version: |
+             2.2.402
+             3.1.404
+             3.0.x
+      - name: Verify dotnet
+        shell: pwsh
+        run: __tests__/verify-dotnet.ps1 2.2.402 3.1.404 '3.0'
 
   test-setup-full-version:
     runs-on: ${{ matrix.operating-system }}

.licenses/npm/@actions/core.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@actions/core"
-version: 1.2.6
+version: 1.6.0
 type: npm
 summary: Actions core lib
 homepage: https://github.com/actions/toolkit/tree/main/packages/core

.licenses/npm/@actions/http-client-1.0.11.dep.yml

@@ -0,0 +1,32 @@
+---
+name: "@actions/http-client"
+version: 1.0.11
+type: npm
+summary: Actions Http Client
+homepage: https://github.com/actions/http-client#readme
+license: mit
+licenses:
+- sources: LICENSE
+  text: |
+    Actions Http Client for Node.js
+
+    Copyright (c) GitHub, Inc.
+
+    All rights reserved.
+
+    MIT License
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
+    associated documentation files (the "Software"), to deal in the Software without restriction,
+    including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+    subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
+    LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+    NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+    WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+    SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+notices: []

README.md

@@ -4,9 +4,9 @@
   <a href="https://github.com/actions/setup-dotnet"><img alt="GitHub Actions status" src="https://github.com/actions/setup-dotnet/workflows/Main%20workflow/badge.svg"></a>
 </p>
 
-This action sets up a [dotnet core cli](https://github.com/dotnet/cli) environment for use in actions by:
+This action sets up a [.NET CLI](https://github.com/dotnet/sdk) environment for use in actions by:
 
-- optionally downloading and caching a version of dotnet by SDK version and adding to PATH
+- optionally downloading and caching a version(s) of dotnet by SDK version(s) and adding to PATH
 - registering problem matchers for error output
 - setting up authentication to private package sources like GitHub Packages
 
@@ -29,11 +29,24 @@ steps:
     dotnet-version: '3.1.x' # SDK Version to use; x will use the latest version of the 3.1 channel
 - run: dotnet build <my project>
 ```
+Multiple versions:
+> Note: In case multiple versions are installed, the latest .NET version will be used by default unless another version is specified in the `global.json` file.
 
+```yml
+steps:
+- uses: actions/checkout@v2
+- name: Setup dotnet
+  uses: actions/setup-dotnet@v1
+  with:
+    dotnet-version: | 
+      3.1.x
+      5.0.x
+- run: dotnet build <my project>
+```
 Preview version:
 ```yml
 steps:
-- uses: actions@checkout@v2
+- uses: actions/checkout@v2
 - uses: actions/setup-dotnet@v1
   with:
     dotnet-version: '6.0.x'
@@ -118,7 +131,7 @@ steps:
 
 ## Environment Variables to use with dotnet
 
-Some environment variables may be necessary for your particular case or to improve logging. Some examples are listed below, but the full list with complete details can be found here: https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet#environment-variables
+Some environment variables may be necessary for your particular case or to improve logging. Some examples are listed below, but the full list with complete details can be found here: https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet-environment-variables
 
 - DOTNET_NOLOGO - removes logo and telemetry message from first run of dotnet cli (default: false)
 - DOTNET_CLI_TELEMETRY_OPTOUT - opt-out of telemetry being sent to Microsoft (default: false)

__tests__/installer.test.ts

@@ -32,6 +32,27 @@ describe('installer tests', () => {
     }
   }, 30000);
 
+  it('Aquires multiple versions of dotnet', async () => {
+    const versions = ['2.2.207', '3.1.120'];
+
+    for (const version of versions) {
+      await getDotnet(version);
+    }
+    expect(fs.existsSync(path.join(toolDir, 'sdk', '2.2.207'))).toBe(true);
+    expect(fs.existsSync(path.join(toolDir, 'sdk', '3.1.120'))).toBe(true);
+
+    if (IS_WINDOWS) {
+      expect(fs.existsSync(path.join(toolDir, 'dotnet.exe'))).toBe(true);
+    } else {
+      expect(fs.existsSync(path.join(toolDir, 'dotnet'))).toBe(true);
+    }
+
+    expect(process.env.DOTNET_ROOT).toBeDefined;
+    expect(process.env.PATH).toBeDefined;
+    expect(process.env.DOTNET_ROOT).toBe(toolDir);
+    expect(process.env.PATH?.startsWith(toolDir)).toBe(true);
+  }, 600000);
+
   it('Acquires version of dotnet if no matching version is installed', async () => {
     await getDotnet('3.1.201');
     expect(fs.existsSync(path.join(toolDir, 'sdk', '3.1.201'))).toBe(true);
@@ -126,4 +147,5 @@ function normalizeFileContents(contents: string): string {
 async function getDotnet(version: string): Promise<void> {
   const dotnetInstaller = new installer.DotnetCoreInstaller(version);
   await dotnetInstaller.installDotnet();
+  installer.DotnetCoreInstaller.addToPath();
 }

__tests__/sample-csproj/sample.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;netcoreapp2.2</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;netcoreapp3.0;netcoreapp2.2</TargetFrameworks>
     <RootNamespace>sample_csproj</RootNamespace>
 
     <IsPackable>false</IsPackable>

__tests__/setup-dotnet.test.ts

@@ -7,6 +7,7 @@ const toolDir = path.join(__dirname, 'runner', 'tools2');
 const tempDir = path.join(__dirname, 'runner', 'temp2');
 
 import * as setup from '../src/setup-dotnet';
+import * as dotnetInstaller from '../src/installer';
 
 const IS_WINDOWS = process.platform === 'win32';
 
@@ -19,7 +20,7 @@ describe('setup-dotnet tests', () => {
     await io.rmRF(tempDir);
   });
 
-  afterAll(async () => {
+  afterEach(async () => {
     try {
       await io.rmRF(path.join(process.cwd(), 'global.json'));
       await io.rmRF(toolDir);
@@ -44,4 +45,26 @@ describe('setup-dotnet tests', () => {
       expect(fs.existsSync(path.join(toolDir, 'dotnet'))).toBe(true);
     }
   }, 400000);
+
+  it('Acquires version of dotnet from global.json with rollForward option, install the latest patch', async () => {
+    const globalJsonPath = path.join(process.cwd(), 'global.json');
+    const jsonContents = `{${os.EOL}"sdk": {${os.EOL}"version":"3.1.201",${os.EOL}"rollForward":"latestFeature"${os.EOL}}${os.EOL}}`;
+    if (!fs.existsSync(globalJsonPath)) {
+      fs.writeFileSync(globalJsonPath, jsonContents);
+    }
+
+    const version = '3.1';
+    const installer = new dotnetInstaller.DotnetCoreInstaller(version);
+    const patchVersion = await installer.resolveVersion(
+      new dotnetInstaller.DotNetVersionInfo(version)
+    );
+    await setup.run();
+
+    expect(fs.existsSync(path.join(toolDir, 'sdk', patchVersion))).toBe(true);
+    if (IS_WINDOWS) {
+      expect(fs.existsSync(path.join(toolDir, 'dotnet.exe'))).toBe(true);
+    } else {
+      expect(fs.existsSync(path.join(toolDir, 'dotnet'))).toBe(true);
+    }
+  }, 400000);
 });

__tests__/verify-dotnet.ps1

@@ -6,12 +6,15 @@ if (!$args[0])
 $dotnet = Get-Command dotnet | Select-Object -First 1 | ForEach-Object { $_.Path }
 Write-Host "Found '$dotnet'"
 
-$version = & $dotnet --version | Out-String | ForEach-Object { $_.Trim() }
-Write-Host "Version $version"
-if (-not ($version.StartsWith($args[0].ToString())))
+if($args.count -eq 1)
 {
-  Write-Host "PATH='$env:PATH'"
-  throw "Unexpected version"
+  $version = & $dotnet --version | Out-String | ForEach-Object { $_.Trim() }
+  Write-Host "Version $version"
+  if (-not ($version.StartsWith($args[0].ToString())))
+  {
+    Write-Host "PATH='$env:PATH'"
+    throw "Unexpected version"
+  }
 }
 
 if ($args[1])
@@ -19,16 +22,17 @@ if ($args[1])
   # SDKs are listed on multiple lines with the path afterwards in square brackets
   $versions = & $dotnet --list-sdks | ForEach-Object { $_.SubString(0, $_.IndexOf('[')).Trim() }
   Write-Host "Installed versions: $versions"
-  $isInstalledVersion = $false
-  foreach ($version in $versions)
-  {
-    if ($version.StartsWith($args[1].ToString())) 
+  $InstalledVersionCount = 0
+  foreach($arg in $args){
+    foreach ($version in $versions)
     {
-      $isInstalledVersion = $true
-      break
+      if ($version.StartsWith($arg.ToString())) 
+      {
+        $InstalledVersionCount++
+      }
     }
-  }
-  if (-not $isInstalledVersion)
+   }
+  if ( $InstalledVersionCount -ne $args.Count)
   {
     Write-Host "PATH='$env:PATH'"
     throw "Unexpected version"
@@ -53,6 +57,13 @@ if ($args[1])
     throw "Unexpected output"
   }
 }
+if ($args[2])
+{
+  if ($sample_output -notlike "*Test Run Successful.*Test Run Successful.*Test Run Successful.*")
+  {
+    throw "Unexpected output"
+  }
+}
 else
 {
   if ($sample_output -notlike "*Test Run Successful.*")

action.yml

@@ -1,12 +1,12 @@
 name: 'Setup .NET Core SDK'
-description: 'Used to build and publish .NET source. Set up a specific version of the .NET Core CLI in the PATH and set up authentication to a private NuGet repository'
+description: 'Used to build and publish .NET source. Set up a specific version of the .NET and authentication to private NuGet repository'
 author: 'GitHub'
 branding:
   icon: play
   color: green
 inputs:
   dotnet-version:
-    description: 'Optional SDK version to use. If not provided, will install global.json version when available. Examples: 2.2.104, 3.1, 3.1.x'
+    description: 'Optional SDK version(s) to use. If not provided, will install global.json version when available. Examples: 2.2.104, 3.1, 3.1.x'
   source-url:
     description: 'Optional package source for which to set up authentication. Will consult any existing NuGet.config in the root of the repo and provide a temporary NuGet.config using the NUGET_AUTH_TOKEN environment variable as a ClearTextPassword'
   owner:

externals/install-dotnet.sh

@@ -135,6 +135,31 @@ get_legacy_os_name_from_platform() {
     return 1
 }
 
+get_legacy_os_name() {
+    eval $invocation
+
+    local uname=$(uname)
+    if [ "$uname" = "Darwin" ]; then
+        echo "osx"
+        return 0
+    elif [ -n "$runtime_id" ]; then
+        echo $(get_legacy_os_name_from_platform "${runtime_id%-*}" || echo "${runtime_id%-*}")
+        return 0
+    else
+        if [ -e /etc/os-release ]; then
+            . /etc/os-release
+            os=$(get_legacy_os_name_from_platform "$ID${VERSION_ID:+.${VERSION_ID}}" || echo "")
+            if [ -n "$os" ]; then
+                echo "$os"
+                return 0
+            fi
+        fi
+    fi
+
+    say_verbose "Distribution specific OS name and version could not be detected: UName = $uname"
+    return 1
+}
+
 get_linux_platform_name() {
     eval $invocation
 
@@ -174,8 +199,8 @@ get_current_os_name() {
         echo "freebsd"
         return 0
     elif [ "$uname" = "Linux" ]; then
-        local linux_platform_name
-        linux_platform_name="$(get_linux_platform_name)" || { echo "linux" && return 0 ; }
+        local linux_platform_name=""
+        linux_platform_name="$(get_linux_platform_name)" || true
 
         if [ "$linux_platform_name" = "rhel.6" ]; then
             echo $linux_platform_name
@@ -196,39 +221,13 @@ get_current_os_name() {
     return 1
 }
 
-get_legacy_os_name() {
-    eval $invocation
-
-    local uname=$(uname)
-    if [ "$uname" = "Darwin" ]; then
-        echo "osx"
-        return 0
-    elif [ -n "$runtime_id" ]; then
-        echo $(get_legacy_os_name_from_platform "${runtime_id%-*}" || echo "${runtime_id%-*}")
-        return 0
-    else
-        if [ -e /etc/os-release ]; then
-            . /etc/os-release
-            os=$(get_legacy_os_name_from_platform "$ID${VERSION_ID:+.${VERSION_ID}}" || echo "")
-            if [ -n "$os" ]; then
-                echo "$os"
-                return 0
-            fi
-        fi
-    fi
-
-    say_verbose "Distribution specific OS name and version could not be detected: UName = $uname"
-    return 1
-}
-
 machine_has() {
     eval $invocation
 
-    hash "$1" > /dev/null 2>&1
+    command -v "$1" > /dev/null 2>&1
     return $?
 }
 
-
 check_min_reqs() {
     local hasMinimum=false
     if machine_has "curl"; then
@@ -321,11 +320,13 @@ get_normalized_architecture_from_architecture() {
     eval $invocation
 
     local architecture="$(to_lowercase "$1")"
+
+    if [[ $architecture == \<auto\> ]]; then
+        echo "$(get_machine_architecture)"
+        return 0
+    fi
+
     case "$architecture" in
-        \<auto\>)
-            echo "$(get_normalized_architecture_from_architecture "$(get_machine_architecture)")"
-            return 0
-            ;;
         amd64|x64)
             echo "x64"
             return 0
@@ -425,6 +426,7 @@ get_normalized_channel() {
 get_normalized_product() {
     eval $invocation
 
+    local product=""
     local runtime="$(to_lowercase "$1")"
     if [[ "$runtime" == "dotnet" ]]; then
         product="dotnet-runtime"
@@ -446,7 +448,7 @@ get_normalized_product() {
 
 # args:
 # version_text - stdin
-get_version_from_version_info() {
+get_version_from_latestversion_file_content() {
     eval $invocation
 
     cat | tail -n 1 | sed 's/\r$//'
@@ -478,7 +480,7 @@ is_dotnet_package_installed() {
 # azure_feed - $1
 # channel - $2
 # normalized_architecture - $3
-get_latest_version_info() {
+get_version_from_latestversion_file() {
     eval $invocation
 
     local azure_feed="$1"
@@ -487,24 +489,24 @@ get_latest_version_info() {
 
     local version_file_url=null
     if [[ "$runtime" == "dotnet" ]]; then
-        version_file_url="$uncached_feed/Runtime/$channel/latest.version"
+        version_file_url="$azure_feed/Runtime/$channel/latest.version"
     elif [[ "$runtime" == "aspnetcore" ]]; then
-        version_file_url="$uncached_feed/aspnetcore/Runtime/$channel/latest.version"
+        version_file_url="$azure_feed/aspnetcore/Runtime/$channel/latest.version"
     elif [ -z "$runtime" ]; then
-         version_file_url="$uncached_feed/Sdk/$channel/latest.version"
+         version_file_url="$azure_feed/Sdk/$channel/latest.version"
     else
         say_err "Invalid value for \$runtime"
         return 1
     fi
-    say_verbose "get_latest_version_info: latest url: $version_file_url"
+    say_verbose "get_version_from_latestversion_file: latest url: $version_file_url"
 
-    download "$version_file_url"
-    return $?
+    download "$version_file_url" || return $?
+    return 0
 }
 
 # args:
 # json_file - $1
-parse_jsonfile_for_version() {
+parse_globaljson_file_for_version() {
     eval $invocation
 
     local json_file="$1"
@@ -560,9 +562,9 @@ get_specific_version_from_version() {
     if [ -z "$json_file" ]; then
         if [[ "$version" == "latest" ]]; then
             local version_info
-            version_info="$(get_latest_version_info "$azure_feed" "$channel" "$normalized_architecture" false)" || return 1
+            version_info="$(get_version_from_latestversion_file "$azure_feed" "$channel" "$normalized_architecture" false)" || return 1
             say_verbose "get_specific_version_from_version: version_info=$version_info"
-            echo "$version_info" | get_version_from_version_info
+            echo "$version_info" | get_version_from_latestversion_file_content
             return 0
         else
             echo "$version"
@@ -570,7 +572,7 @@ get_specific_version_from_version() {
         fi
     else
         local version_info
-        version_info="$(parse_jsonfile_for_version "$json_file")" || return 1
+        version_info="$(parse_globaljson_file_for_version "$json_file")" || return 1
         echo "$version_info"
         return 0
     fi
@@ -635,14 +637,14 @@ get_specific_product_version() {
 
         if machine_has "curl"
         then
-            specific_product_version=$(curl -s --fail "${download_link}${feed_credential}")
+            specific_product_version=$(curl -s --fail "${download_link}${feed_credential}" 2>&1)
             if [ $? = 0 ]; then
                 echo "${specific_product_version//[$'\t\r\n']}"
                 return 0
             fi
         elif machine_has "wget"
         then
-            specific_product_version=$(wget -qO- "${download_link}${feed_credential}")
+            specific_product_version=$(wget -qO- "${download_link}${feed_credential}" 2>&1)
             if [ $? = 0 ]; then
                 echo "${specific_product_version//[$'\t\r\n']}"
                 return 0
@@ -907,7 +909,7 @@ get_http_header_curl() {
     fi
 
     curl_options="-I -sSL --retry 5 --retry-delay 2 --connect-timeout 15 "
-    curl $curl_options "$remote_path_with_credential" || return 1
+    curl $curl_options "$remote_path_with_credential" 2>&1 || return 1
     return 0
 }
 
@@ -918,15 +920,26 @@ get_http_header_wget() {
     eval $invocation
     local remote_path="$1"
     local disable_feed_credential="$2"
+    local wget_options="-q -S --spider --tries 5 "
+    # Store options that aren't supported on all wget implementations separately.
+    local wget_options_extra="--waitretry 2 --connect-timeout 15 "
+    local wget_result=''
 
     remote_path_with_credential="$remote_path"
     if [ "$disable_feed_credential" = false ]; then
         remote_path_with_credential+="$feed_credential"
     fi
 
-    wget_options="-q -S --spider --tries 5 --waitretry 2 --connect-timeout 15 "
-    wget $wget_options "$remote_path_with_credential" 2>&1 || return 1
-    return 0
+    wget $wget_options $wget_options_extra "$remote_path_with_credential" 2>&1
+    wget_result=$?
+
+    if [[ $wget_result == 2 ]]; then
+        # Parsing of the command has failed. Exclude potentially unrecognized options and retry.
+        wget $wget_options "$remote_path_with_credential" 2>&1
+        return $?
+    fi
+
+    return $wget_result
 }
 
 # args:
@@ -988,9 +1001,9 @@ downloadcurl() {
     local curl_options="--retry 20 --retry-delay 2 --connect-timeout 15 -sSL -f --create-dirs "
     local failed=false
     if [ -z "$out_path" ]; then
-        curl $curl_options "$remote_path_with_credential" || failed=true
+        curl $curl_options "$remote_path_with_credential" 2>&1 || failed=true
     else
-        curl $curl_options -o "$out_path" "$remote_path_with_credential" || failed=true
+        curl $curl_options -o "$out_path" "$remote_path_with_credential" 2>&1 || failed=true
     fi
     if [ "$failed" = true ]; then
         local disable_feed_credential=false
@@ -1016,14 +1029,31 @@ downloadwget() {
     local out_path="${2:-}"
     # Append feed_credential as late as possible before calling wget to avoid logging feed_credential
     local remote_path_with_credential="${remote_path}${feed_credential}"
-    local wget_options="--tries 20 --waitretry 2 --connect-timeout 15 "
-    local failed=false
+    local wget_options="--tries 20 "
+    # Store options that aren't supported on all wget implementations separately.
+    local wget_options_extra="--waitretry 2 --connect-timeout 15 "
+    local wget_result=''
+
     if [ -z "$out_path" ]; then
-        wget -q $wget_options -O - "$remote_path_with_credential" || failed=true
+        wget -q $wget_options $wget_options_extra -O - "$remote_path_with_credential" 2>&1
+        wget_result=$?
     else
-        wget $wget_options -O "$out_path" "$remote_path_with_credential" || failed=true
+        wget $wget_options $wget_options_extra -O "$out_path" "$remote_path_with_credential" 2>&1
+        wget_result=$?
     fi
-    if [ "$failed" = true ]; then
+
+    if [[ $wget_result == 2 ]]; then
+        # Parsing of the command has failed. Exclude potentially unrecognized options and retry.
+        if [ -z "$out_path" ]; then
+            wget -q $wget_options -O - "$remote_path_with_credential" 2>&1
+            wget_result=$?
+        else
+            wget $wget_options -O "$out_path" "$remote_path_with_credential" 2>&1
+            wget_result=$?
+        fi
+    fi
+
+    if [[ $wget_result != 0 ]]; then
         local disable_feed_credential=false
         local response=$(get_http_header_wget $remote_path $disable_feed_credential)
         http_code=$( echo "$response" | awk '/^  HTTP/{print $2}' | tail -1 )
@@ -1034,10 +1064,11 @@ downloadwget() {
         say_verbose "$download_error_msg"
         return 1
     fi
+
     return 0
 }
 
-get_download_link_from_aka_ms() {    
+get_download_link_from_aka_ms() {
     eval $invocation
 
     #quality is not supported for LTS or current channel
@@ -1090,11 +1121,197 @@ get_download_link_from_aka_ms() {
     fi
 }
 
+get_feeds_to_use()
+{
+    feeds=(
+    "https://dotnetcli.azureedge.net/dotnet"
+    "https://dotnetbuilds.azureedge.net/public"
+    )
+
+    if [[ -n "$azure_feed" ]]; then
+        feeds=("$azure_feed")
+    fi
+
+    if [[ "$no_cdn" == "true" ]]; then
+        feeds=(
+        "https://dotnetcli.blob.core.windows.net/dotnet"
+        "https://dotnetbuilds.blob.core.windows.net/public"
+        )
+
+        if [[ -n "$uncached_feed" ]]; then
+            feeds=("$uncached_feed")
+        fi
+    fi
+}
+
+# THIS FUNCTION MAY EXIT (if the determined version is already installed).
+generate_download_links() {
+
+    download_links=()
+    specific_versions=()
+    effective_versions=()
+    link_types=()
+
+    # If generate_akams_links returns false, no fallback to old links. Just terminate.
+    # This function may also 'exit' (if the determined version is already installed).
+    generate_akams_links || return
+
+    # Check other feeds only if we haven't been able to find an aka.ms link.
+    if [[ "${#download_links[@]}" -lt 1 ]]; then
+        for feed in ${feeds[@]}
+        do
+            # generate_regular_links may also 'exit' (if the determined version is already installed).
+            generate_regular_links $feed || return
+        done
+    fi
+
+    if [[ "${#download_links[@]}" -eq 0 ]]; then
+        say_err "Failed to resolve the exact version number."
+        return 1
+    fi
+
+    say_verbose "Generated ${#download_links[@]} links."
+    for link_index in ${!download_links[@]}
+    do
+        say_verbose "Link $link_index: ${link_types[$link_index]}, ${effective_versions[$link_index]}, ${download_links[$link_index]}"
+    done
+}
+
+# THIS FUNCTION MAY EXIT (if the determined version is already installed).
+generate_akams_links() {
+    local valid_aka_ms_link=true;
+
+    normalized_version="$(to_lowercase "$version")"
+    if [[ -n "$json_file" || "$normalized_version" != "latest" ]]; then
+        # aka.ms links are not needed when exact version is specified via command or json file
+        return
+    fi
+
+    get_download_link_from_aka_ms || valid_aka_ms_link=false
+
+    if [[ "$valid_aka_ms_link" == true ]]; then
+        say_verbose "Retrieved primary payload URL from aka.ms link: '$aka_ms_download_link'."
+        say_verbose "Downloading using legacy url will not be attempted."
+
+        download_link=$aka_ms_download_link
+
+        #get version from the path
+        IFS='/'
+        read -ra pathElems <<< "$download_link"
+        count=${#pathElems[@]}
+        specific_version="${pathElems[count-2]}"
+        unset IFS;
+        say_verbose "Version: '$specific_version'."
+
+        #Retrieve effective version
+        effective_version="$(get_specific_product_version "$azure_feed" "$specific_version" "$download_link")"
+
+        # Add link info to arrays
+        download_links+=($download_link)
+        specific_versions+=($specific_version)
+        effective_versions+=($effective_version)
+        link_types+=("aka.ms")
+
+        #  Check if the SDK version is already installed.
+        if [[ "$dry_run" != true ]] && is_dotnet_package_installed "$install_root" "$asset_relative_path" "$effective_version"; then
+            say "$asset_name with version '$effective_version' is already installed."
+            exit 0
+        fi
+
+        return 0
+    fi
+
+    # if quality is specified - exit with error - there is no fallback approach
+    if [ ! -z "$normalized_quality" ]; then
+        say_err "Failed to locate the latest version in the channel '$normalized_channel' with '$normalized_quality' quality for '$normalized_product', os: '$normalized_os', architecture: '$normalized_architecture'."
+        say_err "Refer to: https://aka.ms/dotnet-os-lifecycle for information on .NET Core support."
+        return 1
+    fi
+    say_verbose "Falling back to latest.version file approach."
+}
+
+# THIS FUNCTION MAY EXIT (if the determined version is already installed)
+# args:
+# feed - $1
+generate_regular_links() {
+    local feed="$1"
+    local valid_legacy_download_link=true
+
+    specific_version=$(get_specific_version_from_version "$feed" "$channel" "$normalized_architecture" "$version" "$json_file") || specific_version='0'
+
+    if [[ "$specific_version" == '0' ]]; then
+        say_verbose "Failed to resolve the specific version number using feed '$feed'"
+        return
+    fi
+
+    effective_version="$(get_specific_product_version "$feed" "$specific_version")"
+    say_verbose "specific_version=$specific_version"
+
+    download_link="$(construct_download_link "$feed" "$channel" "$normalized_architecture" "$specific_version" "$normalized_os")"
+    say_verbose "Constructed primary named payload URL: $download_link"
+
+    # Add link info to arrays
+    download_links+=($download_link)
+    specific_versions+=($specific_version)
+    effective_versions+=($effective_version)
+    link_types+=("primary")
+
+    legacy_download_link="$(construct_legacy_download_link "$feed" "$channel" "$normalized_architecture" "$specific_version")" || valid_legacy_download_link=false
+
+    if [ "$valid_legacy_download_link" = true ]; then
+        say_verbose "Constructed legacy named payload URL: $legacy_download_link"
+    
+        download_links+=($legacy_download_link)
+        specific_versions+=($specific_version)
+        effective_versions+=($effective_version)
+        link_types+=("legacy")
+    else
+        legacy_download_link=""
+        say_verbose "Cound not construct a legacy_download_link; omitting..."
+    fi
+
+    #  Check if the SDK version is already installed.
+    if [[ "$dry_run" != true ]] && is_dotnet_package_installed "$install_root" "$asset_relative_path" "$effective_version"; then
+        say "$asset_name with version '$effective_version' is already installed."
+        exit 0
+    fi
+}
+
+print_dry_run() {
+
+    say "Payload URLs:"
+
+    for link_index in "${!download_links[@]}"
+        do
+            say "URL #$link_index - ${link_types[$link_index]}: ${download_links[$link_index]}"
+    done
+
+    resolved_version=${specific_versions[0]}
+    repeatable_command="./$script_name --version "\""$resolved_version"\"" --install-dir "\""$install_root"\"" --architecture "\""$normalized_architecture"\"" --os "\""$normalized_os"\"""
+    
+    if [ ! -z "$normalized_quality" ]; then
+        repeatable_command+=" --quality "\""$normalized_quality"\"""
+    fi
+
+    if [[ "$runtime" == "dotnet" ]]; then
+        repeatable_command+=" --runtime "\""dotnet"\"""
+    elif [[ "$runtime" == "aspnetcore" ]]; then
+        repeatable_command+=" --runtime "\""aspnetcore"\"""
+    fi
+
+    repeatable_command+="$non_dynamic_parameters"
+
+    if [ -n "$feed_credential" ]; then
+        repeatable_command+=" --feed-credential "\""<feed_credential>"\"""
+    fi
+
+    say "Repeatable invocation: $repeatable_command"
+}
+
 calculate_vars() {
     eval $invocation
-    valid_legacy_download_link=true
 
-    #normalize input variables
+    script_name=$(basename "$0")
     normalized_architecture="$(get_normalized_architecture_from_architecture "$architecture")"
     say_verbose "Normalized architecture: '$normalized_architecture'."
     normalized_os="$(get_normalized_os "$user_defined_os")"
@@ -1105,76 +1322,8 @@ calculate_vars() {
     say_verbose "Normalized channel: '$normalized_channel'."
     normalized_product="$(get_normalized_product "$runtime")"
     say_verbose "Normalized product: '$normalized_product'."
-
-    #try to get download location from aka.ms link
-    #not applicable when exact version is specified via command or json file
-    normalized_version="$(to_lowercase "$version")"
-    if [[ -z "$json_file" && "$normalized_version" == "latest" ]]; then
-
-            valid_aka_ms_link=true;
-            get_download_link_from_aka_ms || valid_aka_ms_link=false
-            
-            if [ "$valid_aka_ms_link" == false ]; then
-                # if quality is specified - exit with error - there is no fallback approach
-                if [ ! -z "$normalized_quality" ]; then
-                    say_err "Failed to locate the latest version in the channel '$normalized_channel' with '$normalized_quality' quality for '$normalized_product', os: '$normalized_os', architecture: '$normalized_architecture'."
-                    say_err "Refer to: https://aka.ms/dotnet-os-lifecycle for information on .NET Core support."
-                    return 1
-                fi
-                say_verbose "Falling back to latest.version file approach."
-            else
-                say_verbose "Retrieved primary payload URL from aka.ms link: '$aka_ms_download_link'."
-                download_link=$aka_ms_download_link
-
-                say_verbose "Downloading using legacy url will not be attempted."
-                valid_legacy_download_link=false
-
-                #get version from the path
-                IFS='/'
-                read -ra pathElems <<< "$download_link"
-                count=${#pathElems[@]}
-                specific_version="${pathElems[count-2]}"
-                unset IFS;
-                say_verbose "Version: '$specific_version'."
-
-                #Retrieve product specific version
-                specific_product_version="$(get_specific_product_version "$azure_feed" "$specific_version" "$download_link")"
-                say_verbose "Product specific version: '$specific_product_version'."
-  
-                install_root="$(resolve_installation_path "$install_dir")"
-                say_verbose "InstallRoot: '$install_root'."
-                return 
-            fi
-    fi
-
-    specific_version="$(get_specific_version_from_version "$azure_feed" "$channel" "$normalized_architecture" "$version" "$json_file")"
-    specific_product_version="$(get_specific_product_version "$azure_feed" "$specific_version")"
-    say_verbose "specific_version=$specific_version"
-    if [ -z "$specific_version" ]; then
-        say_err "Could not resolve version information."
-        return 1
-    fi
-
-    download_link="$(construct_download_link "$azure_feed" "$channel" "$normalized_architecture" "$specific_version" "$normalized_os")"
-    say_verbose "Constructed primary named payload URL: $download_link"
-
-    legacy_download_link="$(construct_legacy_download_link "$azure_feed" "$channel" "$normalized_architecture" "$specific_version")" || valid_legacy_download_link=false
-
-    if [ "$valid_legacy_download_link" = true ]; then
-        say_verbose "Constructed legacy named payload URL: $legacy_download_link"
-    else
-        say_verbose "Cound not construct a legacy_download_link; omitting..."
-    fi
-
     install_root="$(resolve_installation_path "$install_dir")"
-    say_verbose "InstallRoot: $install_root"
-}
-
-install_dotnet() {
-    eval $invocation
-    local download_failed=false
-    local asset_name=''
-    local asset_relative_path=''
+    say_verbose "InstallRoot: '$install_root'."
 
     if [[ "$runtime" == "dotnet" ]]; then
         asset_relative_path="shared/Microsoft.NETCore.App"
@@ -1185,84 +1334,52 @@ install_dotnet() {
     elif [ -z "$runtime" ]; then
         asset_relative_path="sdk"
         asset_name=".NET Core SDK"
-    else
-        say_err "Invalid value for \$runtime"
-        return 1
     fi
 
-    #  Check if the SDK version is already installed.
-    if is_dotnet_package_installed "$install_root" "$asset_relative_path" "$specific_version"; then
-        say "$asset_name version $specific_version is already installed."
-        return 0
-    fi
+    get_feeds_to_use
+}
+
+install_dotnet() {
+    eval $invocation
+    local download_failed=false
+    local download_completed=false
 
     mkdir -p "$install_root"
     zip_path="$(mktemp "$temporary_file_template")"
     say_verbose "Zip path: $zip_path"
 
+    for link_index in "${!download_links[@]}"
+    do
+        download_link="${download_links[$link_index]}"
+        specific_version="${specific_versions[$link_index]}"
+        effective_version="${effective_versions[$link_index]}"
+        link_type="${link_types[$link_index]}"
 
-    # Failures are normal in the non-legacy case for ultimately legacy downloads.
-    # Do not output to stderr, since output to stderr is considered an error.
-    say "Downloading primary link $download_link"
+        say "Attempting to download using $link_type link $download_link"
 
-    # The download function will set variables $http_code and $download_error_msg in case of failure.
-    download "$download_link" "$zip_path" 2>&1 || download_failed=true
+        # The download function will set variables $http_code and $download_error_msg in case of failure.
+        download_failed=false
+        download "$download_link" "$zip_path" 2>&1 || download_failed=true
 
-    #  if the download fails, download the legacy_download_link
-    if [ "$download_failed" = true ]; then
-        primary_path_http_code="$http_code"; primary_path_download_error_msg="$download_error_msg"
-        case $primary_path_http_code in
-        404)
-            say "The resource at $download_link is not available."
-            ;;
-        *)
-            say "$primary_path_download_error_msg"
-            ;;
-        esac
-        rm -f "$zip_path" 2>&1 && say_verbose "Temporary zip file $zip_path was removed"
-        if [ "$valid_legacy_download_link" = true ]; then
-            download_failed=false
-            download_link="$legacy_download_link"
-            zip_path="$(mktemp "$temporary_file_template")"
-            say_verbose "Legacy zip path: $zip_path"
-
-            say "Downloading legacy link $download_link"
-
-            # The download function will set variables $http_code and $download_error_msg in case of failure.
-            download "$download_link" "$zip_path" 2>&1 || download_failed=true
-
-            if [ "$download_failed" = true ]; then
-                legacy_path_http_code="$http_code";  legacy_path_download_error_msg="$download_error_msg"
-                case $legacy_path_http_code in
-                404)
-                    say "The resource at $download_link is not available."
-                    ;;
-                *)
-                    say "$legacy_path_download_error_msg"
-                    ;;
-                esac
-                rm -f "$zip_path" 2>&1 && say_verbose "Temporary zip file $zip_path was removed"
-            fi
-        fi
-    fi
-
-    if [ "$download_failed" = true ]; then
-        if [[ "$primary_path_http_code" = "404" && ( "$valid_legacy_download_link" = false || "$legacy_path_http_code" = "404") ]]; then
-            say_err "Could not find \`$asset_name\` with version = $specific_version"
-            say_err "Refer to: https://aka.ms/dotnet-os-lifecycle for information on .NET Core support"
+        if [ "$download_failed" = true ]; then
+            case $http_code in
+            404)
+                say "The resource at $link_type link '$download_link' is not available."
+                ;;
+            *)
+                say "Failed to download $link_type link '$download_link': $download_error_msg"
+                ;;
+            esac
+            rm -f "$zip_path" 2>&1 && say_verbose "Temporary zip file $zip_path was removed"
         else
-            say_err "Could not download: \`$asset_name\` with version = $specific_version"
-            # 404-NotFound is an expected response if it goes from only one of the links, do not show that error.
-            # If primary path is available (not 404-NotFound) then show the primary error else show the legacy error.
-            if [ "$primary_path_http_code" != "404" ]; then
-                say_err "$primary_path_download_error_msg"
-                return 1
-            fi
-            if [[ "$valid_legacy_download_link" = true  && "$legacy_path_http_code" != "404" ]]; then
-                say_err "$legacy_path_download_error_msg"
-                return 1
-            fi
+            download_completed=true
+            break
         fi
+    done
+
+    if [[ "$download_completed" == false ]]; then
+        say_err "Could not find \`$asset_name\` with version = $specific_version"
+        say_err "Refer to: https://aka.ms/dotnet-os-lifecycle for information on .NET Core support"
         return 1
     fi
 
@@ -1283,14 +1400,14 @@ install_dotnet() {
     fi
 
     #  Check if the standard SDK version is installed.
-    say_verbose "Checking installation: version = $specific_product_version"
-    if is_dotnet_package_installed "$install_root" "$asset_relative_path" "$specific_product_version"; then
+    say_verbose "Checking installation: version = $effective_version"
+    if is_dotnet_package_installed "$install_root" "$asset_relative_path" "$effective_version"; then
         return 0
     fi
 
     # Version verification failed. More likely something is wrong either with the downloaded content or with the verification algorithm.
     say_err "Failed to verify the version of installed \`$asset_name\`.\nInstallation source: $download_link.\nInstallation location: $install_root.\nReport the bug at https://github.com/dotnet/install-scripts/issues."
-    say_err "\`$asset_name\` with version = $specific_product_version failed to install with an unknown error."
+    say_err "\`$asset_name\` with version = $effective_version failed to install with an error."
     return 1
 }
 
@@ -1308,8 +1425,8 @@ architecture="<auto>"
 dry_run=false
 no_path=false
 no_cdn=false
-azure_feed="https://dotnetcli.azureedge.net/dotnet"
-uncached_feed="https://dotnetcli.blob.core.windows.net/dotnet"
+azure_feed=""
+uncached_feed=""
 feed_credential=""
 verbose=false
 runtime=""
@@ -1434,7 +1551,7 @@ do
             echo "          - 3-part version in a format A.B.Cxx - represents a specific SDK release"
             echo "              examples: 5.0.1xx, 5.0.2xx."
             echo "              Supported since 5.0 release"
-            echo "          Note: The version parameter overrides the channel parameter when any version other than `latest` is used."
+            echo "          Note: The version parameter overrides the channel parameter when any version other than 'latest' is used."
             echo "  -v,--version <VERSION>         Use specific VERSION, Defaults to \`$version\`."
             echo "      -Version"
             echo "          Possible values:"
@@ -1447,7 +1564,7 @@ do
             echo "          Works only in combination with channel. Not applicable for current and LTS channels and will be ignored if those channels are used." 
             echo "          For SDK use channel in A.B.Cxx format. Using quality for SDK together with channel in A.B format is not supported." 
             echo "          Supported since 5.0 release." 
-            echo "          Note: The version parameter overrides the channel parameter when any version other than `latest` is used, and therefore overrides the quality."
+            echo "          Note: The version parameter overrides the channel parameter when any version other than 'latest' is used, and therefore overrides the quality."
             echo "  --internal,-Internal               Download internal builds. Requires providing credentials via --feed-credential parameter."
             echo "  --feed-credential <FEEDCREDENTIAL> Token to access Azure feed. Used as a query string to append to the Azure feed."
             echo "      -FeedCredential                This parameter typically is not specified."
@@ -1469,8 +1586,12 @@ do
             echo "  --dry-run,-DryRun                  Do not perform installation. Display download link."
             echo "  --no-path, -NoPath                 Do not set PATH for the current process."
             echo "  --verbose,-Verbose                 Display diagnostics information."
-            echo "  --azure-feed,-AzureFeed            Azure feed location. Defaults to $azure_feed, This parameter typically is not changed by the user."
-            echo "  --uncached-feed,-UncachedFeed      Uncached feed location. This parameter typically is not changed by the user."
+            echo "  --azure-feed,-AzureFeed            For internal use only."
+            echo "                                     Allows using a different storage to download SDK archives from."
+            echo "                                     This parameter is only used if --no-cdn is false."
+            echo "  --uncached-feed,-UncachedFeed      For internal use only."
+            echo "                                     Allows using a different storage to download SDK archives from."
+            echo "                                     This parameter is only used if --no-cdn is true."
             echo "  --skip-non-versioned-files         Skips non-versioned files if they already exist, such as the dotnet executable."
             echo "      -SkipNonVersionedFiles"
             echo "  --no-cdn,-NoCdn                    Disable downloading from the Azure CDN, and use the uncached feed directly."
@@ -1478,14 +1599,6 @@ do
             echo "                                     Note: global.json must have a value for 'SDK:Version'"
             echo "  -?,--?,-h,--help,-Help             Shows this help message"
             echo ""
-            echo "Obsolete parameters:"
-            echo "  --shared-runtime                   The recommended alternative is '--runtime dotnet'."
-            echo "                                     This parameter is obsolete and may be removed in a future version of this script."
-            echo "                                     Installs just the shared runtime bits, not the entire SDK."
-            echo "  --runtime-id                       Installs the .NET Tools for the given platform (use linux-x64 for portable linux)."
-            echo "      -RuntimeId"                    The parameter is obsolete and may be removed in a future version of this script. Should be used only for versions below 2.1.
-            echo "                                     For primary links to override OS or/and architecture, use --os and --architecture option instead."
-            echo ""
             echo "Install Location:"
             echo "  Location is chosen in following order:"
             echo "    - --install-dir option"
@@ -1502,10 +1615,6 @@ do
     shift
 done
 
-if [ "$no_cdn" = true ]; then
-    azure_feed="$uncached_feed"
-fi
-
 say "Note that the intended use of this script is for Continuous Integration (CI) scenarios, where:"
 say "- The SDK needs to be installed without user interaction and without admin rights."
 say "- The SDK installation doesn't need to persist across multiple CI runs."
@@ -1523,33 +1632,11 @@ fi
 
 check_min_reqs
 calculate_vars
-script_name=$(basename "$0")
+# generate_regular_links call below will 'exit' if the determined version is already installed.
+generate_download_links
 
-if [ "$dry_run" = true ]; then
-    say "Payload URLs:"
-    say "Primary named payload URL: ${download_link}"
-    if [ "$valid_legacy_download_link" = true ]; then
-        say "Legacy named payload URL: ${legacy_download_link}"
-    fi
-    repeatable_command="./$script_name --version "\""$specific_version"\"" --install-dir "\""$install_root"\"" --architecture "\""$normalized_architecture"\"" --os "\""$normalized_os"\"""
-    
-    if [ ! -z "$normalized_quality" ]; then
-        repeatable_command+=" --quality "\""$normalized_quality"\"""
-    fi
-
-    if [[ "$runtime" == "dotnet" ]]; then
-        repeatable_command+=" --runtime "\""dotnet"\"""
-    elif [[ "$runtime" == "aspnetcore" ]]; then
-        repeatable_command+=" --runtime "\""aspnetcore"\"""
-    fi
-
-    repeatable_command+="$non_dynamic_parameters"
-
-    if [ -n "$feed_credential" ]; then
-        repeatable_command+=" --feed-credential "\""<feed_credential>"\"""
-    fi
-
-    say "Repeatable invocation: $repeatable_command"
+if [[ "$dry_run" = true ]]; then
+    print_dry_run
     exit 0
 fi
 

package.json

@@ -30,7 +30,7 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.2.6",
+    "@actions/core": "^1.6.0",
     "@actions/exec": "^1.0.4",
     "@actions/github": "^1.1.0",
     "@actions/http-client": "^1.0.8",
@@ -40,15 +40,15 @@
     "xmlbuilder": "^13.0.2"
   },
   "devDependencies": {
-    "@types/jest": "^25.2.3",
+    "@types/jest": "^27.0.2",
     "@types/node": "^12.12.62",
     "@types/semver": "^6.2.2",
     "@zeit/ncc": "^0.21.1",
-    "husky": "^4.3.0",
-    "jest": "^26.4.2",
-    "jest-circus": "^26.4.2",
+    "husky": "^7.0.2",
+    "jest": "^27.2.5",
+    "jest-circus": "^27.2.5",
     "prettier": "^1.19.1",
-    "ts-jest": "^26.4.0",
+    "ts-jest": "^27.0.5",
     "typescript": "^3.9.7",
     "wget-improved": "^3.2.1"
   },

src/installer.ts

@@ -165,6 +165,12 @@ export class DotnetCoreInstaller {
       });
     }
 
+    if (resultCode != 0) {
+      throw new Error(`Failed to install dotnet ${resultCode}. ${output}`);
+    }
+  }
+
+  static addToPath() {
     if (process.env['DOTNET_INSTALL_DIR']) {
       core.addPath(process.env['DOTNET_INSTALL_DIR']);
       core.exportVariable('DOTNET_ROOT', process.env['DOTNET_INSTALL_DIR']);
@@ -189,10 +195,6 @@ export class DotnetCoreInstaller {
     }
 
     console.log(process.env['PATH']);
-
-    if (resultCode != 0) {
-      throw new Error(`Failed to install dotnet ${resultCode}. ${output}`);
-    }
   }
 
   // versionInfo - versionInfo of the SDK/Runtime
@@ -283,7 +285,14 @@ export class DotnetCoreInstaller {
       );
     }
 
-    return releasesInfo[0]['releases.json'];
+    const releaseInfo = releasesInfo[0];
+    if (releaseInfo['support-phase'] === 'eol') {
+      core.warning(
+        `${releaseInfo['product']} ${releaseInfo['channel-version']} is no longer supported and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the .NET support policy.`
+      );
+    }
+
+    return releaseInfo['releases.json'];
   }
 
   private version: string;

src/setup-dotnet.ts

@@ -13,32 +13,29 @@ export async function run() {
     // If a valid version still can't be identified, nothing will be installed.
     // Proxy, auth, (etc) are still set up, even if no version is identified
     //
-    let version = core.getInput('dotnet-version');
-    if (!version) {
+    let versions = core.getMultilineInput('dotnet-version');
+    if (!versions.length) {
       // Try to fall back to global.json
       core.debug('No version found, trying to find version from global.json');
       const globalJsonPath = path.join(process.cwd(), 'global.json');
       if (fs.existsSync(globalJsonPath)) {
-        const globalJson = JSON.parse(
-          // .trim() is necessary to strip BOM https://github.com/nodejs/node/issues/20649
-          fs.readFileSync(globalJsonPath, {encoding: 'utf8'}).trim()
-        );
-        if (globalJson.sdk && globalJson.sdk.version) {
-          version = globalJson.sdk.version;
-        }
+        versions.push(getVersionFromGlobalJson(globalJsonPath));
       }
     }
 
-    if (version) {
+    if (versions.length) {
       const includePrerelease: boolean =
         (core.getInput('include-prerelease') || 'false').toLowerCase() ===
         'true';
-
-      const dotnetInstaller = new installer.DotnetCoreInstaller(
-        version,
-        includePrerelease
-      );
-      await dotnetInstaller.installDotnet();
+      let dotnetInstaller!: installer.DotnetCoreInstaller;
+      for (const version of new Set<string>(versions)) {
+        dotnetInstaller = new installer.DotnetCoreInstaller(
+          version,
+          includePrerelease
+        );
+        await dotnetInstaller.installDotnet();
+      }
+      installer.DotnetCoreInstaller.addToPath();
     }
 
     const sourceUrl: string = core.getInput('source-url');
@@ -54,4 +51,21 @@ export async function run() {
   }
 }
 
+function getVersionFromGlobalJson(globalJsonPath: string): string {
+  let version: string = '';
+  const globalJson = JSON.parse(
+    // .trim() is necessary to strip BOM https://github.com/nodejs/node/issues/20649
+    fs.readFileSync(globalJsonPath, {encoding: 'utf8'}).trim()
+  );
+  if (globalJson.sdk && globalJson.sdk.version) {
+    version = globalJson.sdk.version;
+    const rollForward = globalJson.sdk.rollForward;
+    if (rollForward && rollForward === 'latestFeature') {
+      const [major, minor] = version.split('.');
+      version = `${major}.${minor}`;
+    }
+  }
+  return version;
+}
+
 run();