docs: Integration guide for sample-app (#1733)

Co-authored-by: Rakesh Garimella <[email protected]>
Co-authored-by: Nina Hingerl <[email protected]>

.github/workflows/build-image.yml

@@ -72,4 +72,4 @@ jobs:
         with:
           payload-file-path: ".github/workflows/slack-message.json"
         env:
-          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_HUSKIES_NOTIF_WEBHOOK_URL }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}

.github/workflows/build-sample-app-image.yml

@@ -0,0 +1,51 @@
+name: Build Sample App Image
+
+on:
+  pull_request_target:
+    paths:
+      - "docs/user/integration/sample-app/**"
+    types: [ opened, edited, synchronize, reopened, ready_for_review ]
+  push:
+    branches:
+      - main
+      - sample-app
+    paths:
+      - "docs/user/integration/sample-app/**"
+  workflow_dispatch:
+
+jobs:
+  envs:
+    runs-on: ubuntu-latest
+    outputs:
+      tags: ${{ steps.create-tags.outputs.tags }}
+
+    steps:
+      - name: create tags
+        id: create-tags
+        run: |
+          if [[ $GITHUB_EVENT_NAME == 'push' || $GITHUB_EVENT_NAME == 'merge_group' ]]; then
+            echo 'TAGS=latest' >> "$GITHUB_OUTPUT"
+          else
+            {
+              echo 'tags<<TAGS'
+              echo 'PR-${{ github.event.pull_request.number }}'
+              echo '${{ github.event.pull_request.head.sha }}'
+              echo 'TAGS'
+            } >> "$GITHUB_OUTPUT"
+          fi
+
+  build-image:
+    needs: envs
+    uses: kyma-project/test-infra/.github/workflows/image-builder.yml@main
+    with:
+      name: samples/telemetry-sample-app
+      dockerfile: Dockerfile
+      context: docs/user/integration/sample-app
+      tags: ${{ needs.envs.outputs.tags }}
+  list-images:
+    needs: build-image
+    runs-on: ubuntu-latest
+    steps:
+      - name: List images
+        run: |
+          echo "${{ needs.build-image.outputs.images }}"

.github/workflows/build-telemetry-self-monitor-image.yml

@@ -1,4 +1,4 @@
-name: Telemetry Self Monitor Image Builder
+name: Build Telemetry Self Monitor Image
 
 on:
   pull_request_target:

config/samples/telemetry_v1alpha1_metricpipeline.yaml

@@ -99,7 +99,7 @@ spec:
         app: metric-gen
     spec:
       containers:
-      - image: europe-docker.pkg.dev/kyma-project/prod/examples/monitoring-custom-metrics:v20230905-b823fd14
+      - image: europe-docker.pkg.dev/kyma-project/prod/samples/telemetry-sample-app:latest
         imagePullPolicy: IfNotPresent
         name: metric-gen
         ports:

docs/user/03-traces.md

@@ -381,7 +381,7 @@ metadata:
 spec:
   selector:
     matchLabels:
-      kubernetes.io/name: "my-app"
+      app.kubernetes.io/name: "my-app"
   tracing:
   - providers:
     - name: "kyma-traces"

docs/user/integration/sample-app/Dockerfile

@@ -0,0 +1,13 @@
+FROM golang:1.23 AS builder
+RUN mkdir /app
+ADD . /app
+WORKDIR /app
+RUN CGO_ENABLED=0 GOOS=linux go build -o main ./...
+
+FROM scratch
+LABEL [email protected]:kyma-project/telemetry-manager.git
+
+COPY --from=builder /app .
+EXPOSE 8080
+
+CMD ["./main"]

docs/user/integration/sample-app/Gopkg.toml

@@ -0,0 +1,9 @@
+
+
+required = [
+  "golang.org/x/lint/golint"
+]
+
+[[constraint]]
+  version = "v0.9.2"
+  name = "github.com/prometheus/client_golang"

docs/user/integration/sample-app/Makefile

@@ -0,0 +1,15 @@
+APP_NAME = sample-app
+
+build:
+	go mod vendor
+	go generate ./...
+	CGO_ENABLED=0 go build -o ./bin/app $(buildpath)
+
+run: build
+	./bin/app
+
+image:
+	docker build -t $(APP_NAME):latest .
+
+clean:
+	rm -f ./bin/app