improve deployment job

.github/workflows/crabserverDeployment.yml

@@ -1,26 +1,49 @@
-# This is a workflow that is manually triggered to deploy given crabserver tag to given k8s host
+# This workflow can be used to deploy crabserver to provided environment.
+# workflow requires to enter 2 input parameters: TAG and ENVIRONMENT (allowed values: test2, preprod, prod)
+#Workflow consists of 2 jobs:
+#    1. get-host: job set-up host where crabserver should be deployed,
+#       e.g. if environment is set to 'preprod', crabserver is deployed to 'cmsweb-testbed.cern.ch'
+#    2. deploy: job callS a remote webhook endpoint with a JSON payload.
+#       Read more at: https://github.com/marketplace/actions/workflow-webhook-action
 
 name: CRABServer deployment
 
 on:
   workflow_dispatch:
     inputs:
       tag:
-        description: 'CRABServer tag to deploy:'
+        description: 'TAG:'
+        required: true
+      environment:
+        description: 'ENVIRONMENT:'
         required: true
-      hostName:
-        description: 'Host where given tag should be deployed:'
-        required: true   
         default: preprod
 
 jobs:
-  greet:
+  get-host:
+    runs-on: ubuntu-latest
+    outputs:
+      hostName: ${{ steps.get_environment.outputs.hostName }}
+    steps:
+      - id: get_environment
+        run: |
+          if [ "${{ github.event.inputs.environment }}" = "test2" ]
+          then
+            echo "::set-output name=hostName::cmsweb-test2.cern.ch"
+          elif [ "${{ github.event.inputs.environment }}" = "preprod" ]
+          then
+            echo "::set-output name=hostName::cmsweb-testbed.cern.ch"
+          else
+            exit 1
+          fi
+
+  deploy:
     runs-on: ubuntu-latest
+    needs: [get-host]
     steps:
     - name: Invoke crabserver deployment
       uses: distributhor/workflow-webhook@v1
       env:
         webhook_url: ${{ secrets.WEBHOOK_URL }}
         webhook_secret: ${{ secrets.WEBHOOK_SECRET }}
-        data: '{ "test1": "test1", "test2" : "test2" }'
-
+        data: '{ "hostName": "${{ needs.get-host.outputs.hostName }}", "tag" : "${{ github.event.inputs.tag }}" }'