From 445fb5522b78fbd6c9129f390cbda9f45242246f Mon Sep 17 00:00:00 2001
From: Joerg Herbel <joerg.herbel@checkmk.com>
Date: Tue, 28 Nov 2023 12:38:01 +0100
Subject: [PATCH] RCC: add caching to GitHub actions workflow

Since we want to use RCC in our system test, we need to build it every
time the test runs. To speed this up, we cache.

CMK-15334
---
 .github/workflows/rcc.yaml | 52 +++++++++++++++++++++++++++++++-------
 1 file changed, 43 insertions(+), 9 deletions(-)

diff --git a/.github/workflows/rcc.yaml b/.github/workflows/rcc.yaml
index 5ccae8c9..fe1f2eca 100644
--- a/.github/workflows/rcc.yaml
+++ b/.github/workflows/rcc.yaml
@@ -2,30 +2,64 @@
 name: "RCC"
 
 on:
-  workflow_call: {}
+  workflow_call:
+    {}
+
+env:
+  RCC_TAG: "v14.15.4"
+  GO_VERSION: "1.20.x"
+  RUBY_VERSION: "2.7"
 
 jobs:
-  build_and_test:
+  check_cache:
     runs-on: ubuntu-latest
+    outputs:
+      cache_hit: ${{ steps.restore-from-cache.outputs.cache-hit }}
+    steps:
+      - id: restore-from-cache
+        uses: actions/cache/restore@v3
+        with:
+          key: rcc-${{ env.RCC_TAG }}-${{ env.GO_VERSION }}-${{ env.RUBY_VERSION }}
+          path: build
+          lookup-only: true
 
+  build_and_cache:
+    runs-on: ubuntu-latest
+    needs:
+      - check_cache
+    if: ${{ needs.check_cache.outputs.cache_hit != 'true' }}
     steps:
       - uses: actions/checkout@v4
         with:
           repository: robocorp/rcc
-          ref: v14.15.4
-
+          ref: ${{ env.RCC_TAG }}
       - uses: actions/setup-go@v3
         with:
-          go-version: '1.20.x'
-
+          go-version: ${{ env.GO_VERSION }}
       - uses: ruby/setup-ruby@v1
         with:
-            ruby-version: '2.7'
-
+            ruby-version: ${{ env.RUBY_VERSION }}
       - run: rake build
-
       - run: rake test
+      - uses: actions/cache/save@v3
+        with:
+          key: rcc-${{ env.RCC_TAG }}-${{ env.GO_VERSION }}-${{ env.RUBY_VERSION }}
+          path: build
 
+  upload:
+    runs-on: ubuntu-latest
+    needs:
+      - build_and_cache
+    # See https://github.com/actions/runner/issues/491 for the following condition
+    if: |
+      always() &&
+      (needs.build_and_cache.result == 'success' || needs.build_and_cache.result == 'skipped')
+    steps:
+      - uses: actions/cache/restore@v3
+        with:
+          path: build
+          key: rcc-${{ env.RCC_TAG }}-${{ env.GO_VERSION }}-${{ env.RUBY_VERSION }}
+          fail-on-cache-miss: true
       - uses: actions/upload-artifact@v3
         with:
           path: build