chore: make the smoke-test workflow usable as go-libddwaf integ test (#…

…2546)

.github/workflows/smoke-tests.yml

@@ -4,9 +4,13 @@ on:
   workflow_call: # allows to reuse this workflow
     inputs:
       ref:
-        description: 'The branch to run the workflow on'
+        description: The branch or tag to run the workflow on
         required: true
         type: string
+      go-libddwaf-ref:
+        description: A git ref to update github.com/DataDog/go-libddwaf/v2 to. No-op if empty.
+        required: false
+        type: string
   push:
     branches:
       - main
@@ -41,9 +45,14 @@ jobs:
           go-version: "stable"
           cache: true
       - name: go get -u
-        run: |
+        run: |-
           go get -u -t $PACKAGES
           go mod tidy
+      - name: Install requested go-libddwaf version
+        if: github.event_name == 'workflow_call' && inputs.go-libddwaf-ref != ''
+        run: |-
+          go get -u -t github.com/DataDog/go-libddwaf/v2@${{ inputs.go-libddwaf-ref }}
+          go mod tidy
       - name: Compile dd-trace-go
         run: go build $PACKAGES
       - name: Test dd-trace-go
@@ -142,5 +151,6 @@ jobs:
             build_with_vendoring=${{ matrix.build-with-vendoring }}
             build_with_cgo=${{ matrix.build-with-cgo }}
             deployment_env=${{ matrix.deployment-env }}
+            go_libddwaf_ref=${{ inputs.go-libddwaf-ref }}
       - name: Test
         run: docker run -p7777:7777 --rm smoke-test

internal/apps/setup-smoke-test/Dockerfile

@@ -42,6 +42,12 @@ RUN set -ex; if [ "$build_env" = "alpine" ] && [ "$build_with_cgo" = "1" ]; then
       apk update && apk add gcc libc-dev; \
     fi
 
+# If requested, upgrade go-libddwaf to the desired release.
+ARG go_libddwaf_ref=""
+RUN if [ "${go_libddwaf_ref}" != "" ]; then \
+    go get -u github.com/DataDog/go-libddwaf/v2@${go_libddwaf_ref}; \
+  fi
+
 RUN go mod tidy
 
 ARG build_with_vendoring