Improve workflow: fetch release id automatically

Author: hakuzumon

.github/workflows/add-release-archive.yaml

@@ -1,42 +1,41 @@
 # Add a zip built for new ES-version to existing release
 name: Add release archive
 on:
-  workflow_dispatch:
-    inputs:
-      # TODO: detect this automatically from tag name
-      releaseId:
-        required: true
-        type: string
-        description: "Id of the release to update"
-      releaseVersion:
-        required: true
-        type: string
-        description: "Release version to checkout"
-      elasticsearchVersion:
-        required: true
-        type: string
-        description: "Version of target Elasticsearch"
+    workflow_dispatch:
+        inputs:
+            releaseVersion:
+                required: true
+                type: string
+                description: "Release version to checkout"
+            elasticsearchVersion:
+                required: true
+                type: string
+                description: "Version of target Elasticsearch"
 
-# version: ${{ github.event.inputs.version }}
 jobs:
-  # TODO: duplication from build.yaml
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          ref: v${{ github.event.inputs.releaseVersion }}
-      - uses: actions/setup-java@v1
-        with:
-          java-version: 8
-      - uses: gradle/wrapper-validation-action@v1
-      - uses: gradle/gradle-build-action@v2
-        with:
-          arguments: build -DbaseVersion=${{ github.event.inputs.releaseVersion }} -DelasticsearchVersion=${{ github.event.inputs.elasticsearchVersion }}
-      - name: Upload the artifacts
-        uses: skx/github-action-publish-binaries@release-2.0
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          releaseId: ${{ github.event.inputs.releaseId }}
-          args: 'build/distributions/*.zip'
+    # TODO: duplication from build.yaml
+    build:
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v2
+              with:
+                  ref: v${{ github.event.inputs.releaseVersion }}
+            - uses: actions/setup-java@v1
+              with:
+                  java-version: 8
+            - uses: gradle/wrapper-validation-action@v1
+            - uses: gradle/gradle-build-action@v2
+              with:
+                  arguments: build -DbaseVersion=${{ github.event.inputs.releaseVersion }} -DelasticsearchVersion=${{ github.event.inputs.elasticsearchVersion }}
+            - name: Get release ID
+              id: get_release_id
+              run: |
+                  release_id=$(curl -s -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" https://api.github.com/repos/${{ github.repository }}/releases/tags/v${{ github.event.inputs.releaseVersion }} | jq -r '.id')
+                  echo "::set-output name=releaseId::$release_id"
+            - name: Upload the artifacts
+              uses: skx/github-action-publish-binaries@release-2.0
+              env:
+                  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+              with:
+                  releaseId: ${{ steps.get_release_id.outputs.releaseId }}
+                  args: 'build/distributions/*.zip'