MXD Backend Service API

.github/workflows/run-terraform.yml

@@ -44,7 +44,7 @@ jobs:
         uses: helm/kind-action@v1.10.0
         with:
           config: mxd/kind.config.yaml
-
+          cluster_name: mxd
       - name: "Install nginx ingress controller"
         run: |-
           echo "::notice title=nginx ingress on KinD::For details how to run nginx ingress on KinD check https://kind.sigs.k8s.io/docs/user/ingress/#ingress-nginx"
@@ -53,7 +53,15 @@ jobs:
             --for=condition=ready pod \
             --selector=app.kubernetes.io/component=controller \
             --timeout=90s
-
+      - name: Setup JDK 21
+        uses: actions/setup-java@v3.13.0
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+      - name: "Backend-Service Build"
+        working-directory: mxd/backend-service
+        run: |-
+          ./gradlew clean dockerize
       - name: "Terraform init"
         working-directory: mxd
         run: |-

.github/workflows/verify-backend-service.yaml

@@ -0,0 +1,47 @@
+#
+#  Copyright (c) 2024 SAP SE
+#  
+#  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
+#  
+#  SPDX-License-Identifier: Apache-2.0
+#  
+#  Contributors:
+#        SAP SE - initial API and implementation
+
+---
+name: "Run Tests"
+
+on:
+  push:
+    branches:
+      - main
+
+  pull_request:
+    branches:
+      - main
+    paths:
+      - 'mxd/backend-service/**'
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+
+  End-To-End-Tests:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v3
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+
+      - run: ./gradlew test
+        working-directory: mxd/backend-service

.gitignore

@@ -35,4 +35,11 @@ override.tf.json
 terraform.rc
 
 .idea/
-mxd/.terraform.lock.hcl
+mxd/.terraform.lock.hcl
+#Ignore Java Classes and Gradle Build Files
+.class.*
+mxd/backend-service/.gradle
+.lock
+.bin
+mxd/backend-service/build
+*.log

mxd/README.md

@@ -31,6 +31,8 @@ once and are accessible by all participants.
 For the most bare-bones installation of the dataspace, execute the following commands in a shell:
 
 ```shell
+cd <path/of/mxd/backend-service>
+./gradlew clean dockerize
 # firstly go to the folder containing the config files
 cd <path/of/mxd>
 kind create cluster -n mxd --config kind.config.yaml
@@ -41,6 +43,7 @@ kubectl wait --namespace ingress-nginx \
   --for=condition=ready pod \
   --selector=app.kubernetes.io/component=controller \
   --timeout=90s
+kind load docker-image --name mxd backend-service:1.0.0
 terraform init
 terraform apply
 # type "yes" and press enter when prompted to do so 

mxd/backend-service.tf

@@ -0,0 +1,93 @@
+#
+#  Copyright (c) 2023 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
+#
+
+resource "kubernetes_deployment" "backend-service" {
+
+  metadata {
+    name = "backend-service"
+    labels = {
+      App = "backend-service"
+    }
+  }
+
+  spec {
+    replicas = 1
+    selector {
+      match_labels = {
+        App = "backend-service"
+      }
+    }
+    template {
+      metadata {
+        labels = {
+          App = "backend-service"
+        }
+      }
+      spec {
+        container {
+          name              = "backend-service"
+          image             = "backend-service:1.0.0"
+          image_pull_policy = "Never"
+
+          port {
+            container_port = 8080
+            name           = "backend-port"
+          }
+          env {
+            name  = "edc.datasource.backendservice.url"
+            value = "jdbc:postgresql://${local.backendservice-postgres.database-url}/${local.databases.backendservice.database-name}"
+          }
+
+          env {
+            name  = "edc.datasource.backendservice.user"
+            value = local.databases.backendservice.database-username
+          }
+          env {
+            name  = "edc.datasource.backendservice.password"
+            value = local.databases.backendservice.database-password
+          }
+          env {
+            name  = "web.http.port"
+            value = 8080
+          }
+          env {
+            name  = "JAVA_TOOL_OPTIONS"
+            value = "-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=1044"
+          }
+        }
+      }
+    }
+  }
+}
+
+resource "kubernetes_service" "backend-service" {
+  metadata {
+    name = "backend-service"
+  }
+  spec {
+    selector = {
+      App = "backend-service"
+    }
+    port {
+      port = 8080
+      name = "backend-port"
+    }
+  }
+}
+

mxd/backend-service/Dockerfile

@@ -0,0 +1,23 @@
+#
+#  Copyright (c) 2024 SAP SE
+#
+#  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
+#
+#  SPDX-License-Identifier: Apache-2.0
+#
+#  Contributors:
+#       SAP SE - initial API and implementation
+#
+#
+
+FROM eclipse-temurin:21.0.2_13-jre-alpine
+
+WORKDIR /app
+
+COPY backend-service.jar /app/backend-service.jar
+
+EXPOSE 8080
+
+CMD java -jar backend-service.jar

mxd/backend-service/README.md

@@ -0,0 +1,134 @@
+# Tractus-X Backend Service
+
+## API Details Summary
+
+The Backend Service is used to simulate a data source or sink enabling the transfer of data and supporting the validation of the end-to-end process. It has the following APIs:
+- [Contents API](#contents-api)
+- [Transfer API](#transfer-api)
+
+## Contents API
+
+### Generate a random content
+
+- Method: GET
+- URL: http://localhost/backend-service/api/v1/contents/random
+- Sample response:
+
+```json
+{
+  "userId": 718895412,
+  "title": "tmnx",
+  "text": "ivj"
+}
+```
+
+### Save the generated content
+
+- Method: POST
+- URL: http://localhost/backend-service/api/v1/contents
+- Request body:
+
+```json
+{
+  "userId": 718895412,
+  "title": "tmnx",
+  "text": "ivj"
+}
+```
+
+- Sample response containing content id and URL:
+
+```json
+{
+  "id": "3b777103-5e06-461b-90c6-1f99e597f60d",
+  "url": "http://localhost:8080/api/v1/contents/3b777103-5e06-461b-90c6-1f99e597f60d"
+}
+```
+This URL will be used as an endpoint in the transfer API.
+
+### Fetch a content
+
+- Method: GET
+- URL: http://localhost/backend-service/api/v1/contents/{content-id}
+- Sample response:
+
+```json
+{
+  "userId": 718895412,
+  "title": "tmnx",
+  "text": "ivj"
+}
+```
+
+### Fetch all contents
+
+- Method: GET
+- URL: http://localhost/backend-service/api/v1/contents
+- Sample response:
+
+```json
+[
+  {
+    "userId": 1,
+    "id": 1,
+    "title": "delectus aut autem",
+    "completed": false
+  },
+  {
+    "userId": 1,
+    "id": 2,
+    "title": "quis ut nam facilis et officia qui",
+    "completed": false
+  }
+]
+```
+
+## Transfer API
+
+### Accept transfer data
+
+- Method: POST
+- URL: http://localhost/backend-service/api/v1/transfers
+- Request/response:
+
+```json
+{
+  "id": "123456789011",
+  "endpoint": "http://localhost:8080/api/v1/contents/3b777103-5e06-461b-90c6-1f99e597f60d",
+  "authKey": "Authorization",
+  "authCode": "100000",
+  "properties": {}
+}
+```
+
+### Get transfer data with ID
+
+- Method: GET
+- URL: http://localhost/backend-service/api/v1/transfers/{id}
+- Sample response:
+
+```json
+{
+  "id": "123456789011",
+  "endpoint": "http://localhost:8080/api/v1/contents/3b777103-5e06-461b-90c6-1f99e597f60d",
+  "authKey": "Authorization",
+  "authCode": "100000",
+  "properties": {}
+}
+```
+
+### Get transfer content
+Get the content which is stored at the above endpoint:
+- Method: GET
+- URL: http://localhost/backend-service/api/v1/transfers/{id}/contents
+- Sample response:
+
+```json
+{
+  "userId": 718895412,
+  "title": "tmnx",
+  "text": "ivj"
+}
+```
+
+Alternatively, please check out the [Postman collections here](./assets/postman)