PMGR-9933 -- adds support for an additional Input to the GH Action specifying an alternative tarball to install for the CLI; useful for when 'latest' is hopelessly broken

Author: daveespo

action.yml

@@ -5,6 +5,9 @@ inputs:
   sfdx-auth-url:
     description: Authorize a Salesforce org using an SFDX auth URL
     required: false
+  tarball-url:
+    description: Supply a URL to a XZip'd tarball containing the version of the SFDX CLI to install. If omitted or blank, it will install the "latest" CLI
+    required: false
 runs:
   using: 'node12'
   main: 'index.js'

index.js

@@ -9,9 +9,18 @@ try {
 }
 
 function installSFDX(){
-  var download = 'wget https://developer.salesforce.com/media/salesforce-cli/sfdx/channels/stable/sfdx-linux-x64.tar.xz -q -P /tmp'
+  var tarballBase = 'https://developer.salesforce.com/media/salesforce-cli/sfdx/channels/stable'
+  var tarballFile = 'sfdx-linux-x64.tar.xz'
+
+  var tarballOverride = core.getInput('tarball-url')
+  if(tarballOverride ){
+    tarballBase = tarballOverride.substr(0,tarballOverride.lastIndexOf('/'))
+    tarballFile = tarballOverride.substr(tarballOverride.lastIndexOf('/')+1)
+  }
+
+  var download = 'wget ' + tarballBase + '/' + tarballFile + ' -q -P /tmp'
   var createDir = 'mkdir sfdx'
-  var unzip = 'tar xJf /tmp/sfdx-linux-x64.tar.xz -C sfdx --strip-components 1'
+  var unzip = 'tar xJf /tmp/' + tarballFile + ' -C sfdx --strip-components 1'
   var install = 'echo "`pwd`/sfdx/bin" >> $GITHUB_PATH'
   var version = 'sfdx/bin/sfdx --version && sfdx/bin/sfdx plugins --core'
   exec(download+' && '+createDir+' && '+unzip+' && '+install+' && '+version, function(error, stdout, stderr){