Chore/add simple data backend

.github/workflows/build-docker-image.yaml

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+name: Build - Docker image
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'simple-data-backend/**'
+    # trigger events for SemVer like tags
+    tags:
+      - '*.*.*'
+      - '*.*.*-*'
+  pull_request:
+    branches:
+      - main
+    paths:
+      - 'simple-data-backend/**'
+
+env:
+  IMAGE_NAMESPACE: "tractusx"
+  IMAGE_NAME: "simple-data-backend"
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      # Create SemVer or ref tags dependent of trigger event
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            ${{ env.IMAGE_NAMESPACE }}/${{ env.IMAGE_NAME }}
+          # Automatically prepare image tags; See action docs for more examples.
+          # semver patter will generate tags like these for example :1 :1.2 :1.2.3
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}
+            type=semver,pattern={{major}}.{{minor}}
+
+      - name: DockerHub login
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          # Use existing DockerHub credentials present as secrets
+          username: ${{ secrets.DOCKER_HUB_USER }}
+          password: ${{ secrets.DOCKER_HUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: simple-data-backend/
+          # Build image for verification purposes on every trigger event. Only push if event is not a PR
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+      # https://github.com/peter-evans/dockerhub-description
+      # Important step to push image description to DockerHub
+      - name: Update Docker Hub description
+        if: github.event_name != 'pull_request'
+        uses: peter-evans/dockerhub-description@v4
+        with:
+          # readme-filepath defaults to toplevel README.md, Only necessary if you have a dedicated file with your 'Notice for docker images'
+          readme-filepath: ./simple-data-backend/DOCKER_NOTICE.md
+          username: ${{ secrets.DOCKER_HUB_USER }}
+          password: ${{ secrets.DOCKER_HUB_TOKEN }}
+          repository: ${{ env.IMAGE_NAMESPACE }}/${{ env.IMAGE_NAME }}

.github/workflows/eclipse-dash.yml

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+name: "Eclipse DASH IP Check"
+
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - '**/*.md'
+      - '**/*.txt'
+  pull_request:
+    branches:
+      - main
+    paths:
+      - '**/pom.xml'
+      - 'pom.xml'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Cache maven packages
+        uses: actions/cache@v3
+        with:
+          path: ~/.m2
+          key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
+          restore-keys: ${{ runner.os }}-m2
+
+      - name: Build with Maven and check dependencies with dash
+        working-directory: simple-data-backend/
+        run: |
+          mvn --batch-mode verify -Ddash.fail=true -DskipTests
+
+      - name: Ensure DEPENDENCIES file is reflecting the current state
+        working-directory: simple-data-backend/
+        run: |
+          mvn org.eclipse.dash:license-tool-plugin:license-check -Ddash.summary=DEPENDENCIES-gen
+          diff DEPENDENCIES DEPENDENCIES-gen

.github/workflows/java-ci.yml

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+name: Java CI with Maven
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'simple-data-backend/**'
+    # trigger events for SemVer like tags
+    tags:
+      - '*.*.*'
+      - '*.*.*-*'
+  pull_request:
+    branches:
+      - main
+    paths:
+      - 'simple-data-backend/**'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Cache maven packages
+        uses: actions/cache@v3
+        with:
+          path: ~/.m2
+          key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
+          restore-keys: ${{ runner.os }}-m2
+
+      - name: Build with Maven
+        working-directory: simple-data-backend/
+        run: |
+          mvn clean verify --batch-mode

.gitignore

@@ -2,3 +2,5 @@
 .idea/
 **/*.tgz
 Chart.lock
+*.iml
+target/

charts/simple-data-backend/.helmignore

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+# #############################################################################
+# Copyright (c) 2022,2024 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
+# Copyright (c) 2021,2024 Contributors to the Eclipse Foundation
+#
+# See the NOTICE file(s) distributed with this work for additional
+# information regarding copyright ownership.
+#
+# This program and the accompanying materials are made available under the
+# terms of the Apache License, Version 2.0 which is available at
+# https://www.apache.org/licenses/LICENSE-2.0.
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+# #############################################################################
+
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/
+
+# Ignore ENV specific values at release
+values?*.yaml
+values?*.yml

charts/simple-data-backend/Chart.yaml

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+# #############################################################################
+# Copyright (c) 2022,2024 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
+# Copyright (c) 2021,2024 Contributors to the Eclipse Foundation
+#
+# See the NOTICE file(s) distributed with this work for additional
+# information regarding copyright ownership.
+#
+# This program and the accompanying materials are made available under the
+# terms of the Apache License, Version 2.0 which is available at
+# https://www.apache.org/licenses/LICENSE-2.0.
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+# #############################################################################
+---
+apiVersion: v2
+name: simple-data-backend
+description: A Helm chart for Kubernetes
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "0.0.1"

charts/simple-data-backend/templates/NOTES.txt

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+1. Get the application URL by running these commands:
+{{- if .Values.ingress.enabled }}
+{{- range $host := .Values.ingress.hosts }}
+  {{- range .paths }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }}
+  {{- end }}
+{{- end }}
+{{- else if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "simple-data-backend.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "simple-data-backend.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "simple-data-backend.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
+  echo http://$SERVICE_IP:{{ .Values.service.port }}
+{{- else if contains "ClusterIP" .Values.service.type }}
+  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "simple-data-backend.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT
+{{- end }}

charts/simple-data-backend/templates/_helpers.tpl

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+{{/*
+*******************************************************************************
+ * Copyright (c) 2022,2024 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
+ * Copyright (c) 2021,2024 Contributors to the Eclipse Foundation
+ *
+ * See the NOTICE file(s) distributed with this work for additional
+ * information regarding copyright ownership.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Apache License, Version 2.0 which is available at
+ * https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *******************************************************************************
+ */}}
+ {{/*
+Expand the name of the chart.
+*/}}
+{{- define "simple-data-backend.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "simple-data-backend.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "simple-data-backend.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "simple-data-backend.labels" -}}
+helm.sh/chart: {{ include "simple-data-backend.chart" . }}
+{{ include "simple-data-backend.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "simple-data-backend.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "simple-data-backend.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+