Allow 'use_existing_version_if_available' to signal that an upload on…

…ly action should result in a no-op if the version already exists.

README.md

@@ -29,7 +29,7 @@ jobs:
       run: zip -r deploy.zip . -x '*.git*'
 
     - name: Deploy to EB
-      uses: einaregilsson/beanstalk-deploy@v18
+      uses: einaregilsson/beanstalk-deploy@v19
       with:
         aws_access_key: ${{ secrets.AWS_ACCESS_KEY_ID }}
         aws_secret_key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
@@ -48,7 +48,7 @@ attempt to deploy that. In the example below the action would attempt to deploy
 
 ```yaml
     - name: Deploy to EB
-      uses: einaregilsson/beanstalk-deploy@v18
+      uses: einaregilsson/beanstalk-deploy@v19
       with:
         aws_access_key: ${{ secrets.AWS_ACCESS_KEY_ID }}
         aws_secret_key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}

action.yml

@@ -36,7 +36,7 @@ inputs:
     description: 'Whether the action should skip creating a new bucket and use the given one to upload the deployment package to instead. When omitted the actions will (try to) create a new one during deployment.'
     required: false
   use_existing_version_if_available:
-    description: 'If set to "true" then the action will deploy an existing version with the given version_label if it already exists, but otherwise create the version and deploy it.'
+    description: 'If set to "true" then the action will deploy an existing version with the given version_label if it already exists, but otherwise create the version and deploy it. If set to true for an action with no environment name it will upload a version if it does not exist already, but do nothing if the version already exists.'
     required: false
   wait_for_deployment:
     description: 'Whether the action should wait for the deployment to finish and log status messages during the wait. Default is "true". If set to "false" the action will start the deployment on Beanstalk and then exit.'

beanstalk-deploy.js

@@ -368,8 +368,13 @@ function main() {
         if (versionAlreadyExists) {
 
             if (!environmentName) {
-                console.log(`No environment set, but the version ${versionLabel} was found - exiting successfully with no change`);
-                process.exit(0);
+                if (useExistingVersionIfAvailable) {
+                    console.log(`No environment set, but the version ${versionLabel} was found and "use_existing_version_if_available" is set to "true" - exiting successfully with no change`);
+                    process.exit(0);
+                } else {
+                    console.error(`You have no environment set, so we are trying to only create version ${versionLabel}, but it already exists in Beanstalk and the parameter "use_existing_version_if_available" is not set to "true". If you want this to result in a no-op when the version already exists you must set "use_existing_version_if_available" to "true"`);
+                    process.exit(2);
+                }
             } else if (file && !useExistingVersionIfAvailable) {
                 console.error(`Deployment failed: Version ${versionLabel} already exists. Either remove the "deployment_package" parameter to deploy existing version, or set the "use_existing_version_if_available" parameter to "true" to use existing version if it exists and deployment package if it doesn't.`);
                 process.exit(2);

package.json

@@ -1,6 +1,6 @@
 {
   "name": "beanstalk-deploy",
-  "version": "18.0.0",
+  "version": "19.0.0",
   "description": "GitHub Action + command line tool to deploy to AWS Elastic Beanstalk.",
   "main": "beanstalk-deploy.js",
   "scripts": {