Add movies-rest

README.md

@@ -91,8 +91,8 @@ Running various samples requires access to the Kyma environment. There are also
 
 | Name                                                                      | Description                                                                                                 | References                                                                     |
 | ------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------ |
-| [Deploy a Go PostgreSQL API Endpoint in SAP BTP, Kyma Runtime](./api-postgresql-go/README.md)                    | This sample provides a Golang API endpoint for communication with an MS SQL database                        | [Tutorial](https://developers.sap.com/tutorials/cp-kyma-api-mssql-golang.html) |
-| [Use and Seed SAP BTP PostgreSQL in SAP BTP, Kyma Runtime](./database-postgres/README.md)                             | This sample demonstrates how to containerize and deploy an MS SQL database                                   | [Tutorial](https://developers.sap.com/tutorials/cp-kyma-mssql-deployment.html) |
+| [Deploy a Go PostgreSQL API Endpoint in SAP BTP, Kyma Runtime](./api-postgresql-go/README.md)                    | This sample provides a Golang API endpoint for communication with an PostgreSQL database                        | [Tutorial](https://developers.sap.com/tutorials/cp-kyma-api-postgres-golang.html) |
+| [Use and Seed SAP BTP PostgreSQL in SAP BTP, Kyma Runtime](./database-postgres/README.md)                             | This sample demonstrates how to seed the PostgreSQL database with sample schema and data using a Kubernetes Job                                   | [Tutorial](https://developers.sap.com/tutorials/cp-kyma-postgres-seed.html) |
 
 ## Advanced Scenarios
 

movies-rest/.env

@@ -0,0 +1,2 @@
+BPL_JVM_THREAD_COUNT=20
+JAVA_TOOL_OPTIONS=-XX:ReservedCodeCacheSize=40M -XX:MaxMetaspaceSize=80M -Xss512k

movies-rest/README.md

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+# Deploy a Spring Boot Movies REST API in SAP BTP, Kyma Runtime
+
+## Overview
+
+> [!NOTE]
+> This sample is used in the Fast Prototyping in SAP BTP, Kyma Runtime Using App Push tutorial.
+
+This sample provides a Spring Boot REST API that manages movie records stored as JSON objects in an S3-compatible **SAP Object Store** service.
+
+This sample demonstrates how to:
+
+- How to go from source code to a running, externally accessible application on Kyma runtime in a single command
+- How to iterate quickly on a prototype without writing Kubernetes manifests, Dockerfiles, or configuring a container registry
+- How to evolve a local prototype into an automated GitHub Actions CD pipeline
+
+## Architecture
+
+```
+GitHub Actions (CI/CD)
+       │
+       ▼
+Kyma Runtime (Kubernetes)
+  ├── movies-rest Pod (Spring Boot, port 8080)
+  │     └── Istio sidecar (mTLS + ingress)
+  └── SAP Service Operator
+        └── ObjectStore ServiceInstance → S3 bucket
+```
+
+Each movie is stored as a JSON file at `movies/<id>.json` inside the bound S3 bucket. No relational database is required.
+
+## Tech Stack
+
+| Layer | Technology |
+|---|---|
+| Language | Java 21 |
+| Framework | Spring Boot 3.3 |
+| API docs | springdoc-openapi / Swagger UI |
+| Storage | AWS SDK v2 → SAP Object Store (S3-compatible) |
+| Service binding | `java-sap-service-operator` (SAP Cloud Service Binding) |
+| Runtime | SAP BTP Kyma (Kubernetes + Istio) |
+| CI/CD | GitHub Actions + `kyma-project/setup-kyma-cli` |
+
+## API Endpoints
+
+| Method | Path | Description |
+|---|---|---|
+| `GET` | `/movies` | List all movies |
+| `GET` | `/movies/{id}` | Get a movie by ID |
+| `POST` | `/movies` | Create a new movie (ID auto-generated) |
+| `PUT` | `/movies/{id}` | Update an existing movie |
+| `DELETE` | `/movies/{id}` | Delete a movie |
+
+Interactive documentation is available at `/swagger-ui.html` after deployment.
+
+### Movie Resource
+
+```json
+{
+  "id": "4e92e9c6-ebe3-4840-ae3c-2ede35ee4b74",
+  "title": "Blade Runner",
+  "year": 1982,
+  "director": "Ridley Scott",
+  "rating": 8.1
+}
+```

movies-rest/pom.xml

@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.3.0</version>
+    </parent>
+
+    <groupId>com.example</groupId>
+    <artifactId>movies</artifactId>
+    <version>1.0.0</version>
+
+    <properties>
+        <java.version>21</java.version>
+    </properties>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>com.sap.cloud.environment.servicebinding</groupId>
+                <artifactId>java-bom</artifactId>
+                <version>0.10.5</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
+            <version>2.5.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.sap.cloud.environment.servicebinding</groupId>
+            <artifactId>java-sap-service-operator</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>software.amazon.awssdk</groupId>
+            <artifactId>s3</artifactId>
+            <version>2.25.0</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>

movies-rest/src/main/java/com/example/movies/Application.java

@@ -0,0 +1,17 @@
+package com.example.movies;
+
+import io.swagger.v3.oas.annotations.OpenAPIDefinition;
+import io.swagger.v3.oas.annotations.info.Info;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+@OpenAPIDefinition(info = @Info(
+        title = "Movies API",
+        version = "1.0.0",
+        description = "CRUD REST service for movies, backed by SAP BTP Object Store"))
+public class Application {
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+}

movies-rest/src/main/java/com/example/movies/Movie.java

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+package com.example.movies;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+@Schema(description = "Movie resource")
+public record Movie(
+        @Schema(description = "Auto-generated ID", example = "1714900000000", accessMode = Schema.AccessMode.READ_ONLY)
+        String id,
+        @Schema(description = "Movie title", example = "Blade Runner")
+        String title,
+        @Schema(description = "Release year", example = "1982")
+        int year,
+        @Schema(description = "Director name", example = "Ridley Scott")
+        String director,
+        @Schema(description = "Rating out of 10", example = "8.1")
+        Double rating) {
+    public Movie withId(String newId) {
+        return new Movie(newId, title, year, director, rating);
+    }
+}

movies-rest/src/main/java/com/example/movies/MovieController.java

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+package com.example.movies;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.server.ResponseStatusException;
+import software.amazon.awssdk.core.sync.RequestBody;
+import software.amazon.awssdk.services.s3.S3Client;
+import software.amazon.awssdk.services.s3.model.*;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.UUID;
+
+@RestController
+@RequestMapping("/movies")
+@Tag(name = "Movies", description = "CRUD operations for movie resources")
+public class MovieController {
+
+    private final S3Client s3;
+    private final String bucket;
+    private final ObjectMapper mapper = new ObjectMapper();
+
+    public MovieController(S3Client s3, String bucketName) {
+        this.s3 = s3;
+        this.bucket = bucketName;
+    }
+
+    @GetMapping
+    @Operation(summary = "List all movies")
+    public List<Movie> list() throws IOException {
+        ListObjectsV2Request request = ListObjectsV2Request.builder()
+                .bucket(bucket)
+                .prefix("movies/")
+                .build();
+        ListObjectsV2Response response = s3.listObjectsV2(request);
+        return response.contents().stream()
+                .map(obj -> getMovie(obj.key()))
+                .toList();
+    }
+
+    @GetMapping("/{id}")
+    @Operation(summary = "Get a movie by ID")
+    public Movie get(@PathVariable String id) {
+        return getMovie("movies/" + id + ".json");
+    }
+
+    @PostMapping
+    @ResponseStatus(HttpStatus.CREATED)
+    @Operation(summary = "Create a new movie")
+    public Movie create(@org.springframework.web.bind.annotation.RequestBody Movie movie) throws Exception {
+        Movie saved = movie.withId(UUID.randomUUID().toString());
+        putMovie(saved);
+        return saved;
+    }
+
+    @PutMapping("/{id}")
+    @Operation(summary = "Update an existing movie")
+    public Movie update(@PathVariable String id, @org.springframework.web.bind.annotation.RequestBody Movie movie) throws Exception {
+        Movie saved = movie.withId(id);
+        putMovie(saved);
+        return saved;
+    }
+
+    @DeleteMapping("/{id}")
+    @ResponseStatus(HttpStatus.NO_CONTENT)
+    @Operation(summary = "Delete a movie")
+    public void delete(@PathVariable String id) {
+        DeleteObjectRequest request = DeleteObjectRequest.builder()
+                .bucket(bucket)
+                .key("movies/" + id + ".json")
+                .build();
+        s3.deleteObject(request);
+    }
+
+    private void putMovie(Movie movie) throws Exception {
+        byte[] json = mapper.writeValueAsBytes(movie);
+        PutObjectRequest request = PutObjectRequest.builder()
+                .bucket(bucket)
+                .key("movies/" + movie.id() + ".json")
+                .contentType("application/json")
+                .build();
+        s3.putObject(request, software.amazon.awssdk.core.sync.RequestBody.fromBytes(json));
+    }
+
+    private Movie getMovie(String key) {
+        try {
+            GetObjectRequest request = GetObjectRequest.builder()
+                    .bucket(bucket)
+                    .key(key)
+                    .build();
+            byte[] data = s3.getObject(request).readAllBytes();
+            return mapper.readValue(data, Movie.class);
+        } catch (NoSuchKeyException e) {
+            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Movie not found");
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

movies-rest/src/main/java/com/example/movies/ObjectStoreConfig.java

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+package com.example.movies;
+
+import com.sap.cloud.environment.servicebinding.api.DefaultServiceBindingAccessor;
+import com.sap.cloud.environment.servicebinding.api.ServiceBinding;
+import com.sap.cloud.environment.servicebinding.api.ServiceBindingAccessor;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
+import software.amazon.awssdk.auth.credentials.StaticCredentialsProvider;
+import software.amazon.awssdk.regions.Region;
+import software.amazon.awssdk.services.s3.S3Client;
+
+import java.net.URI;
+import java.util.Map;
+
+@Configuration
+public class ObjectStoreConfig {
+
+    @Bean
+    public S3Client s3Client() {
+        ServiceBindingAccessor accessor = DefaultServiceBindingAccessor.getInstance();
+
+        ServiceBinding binding = accessor.getServiceBindings().stream()
+                .filter(b -> "objectstore".equals(b.getServiceName().orElse(null)))
+                .findFirst()
+                .orElseThrow(() -> new IllegalStateException("No matching Object Store binding found"));
+
+        Map<String, Object> creds = binding.getCredentials();
+
+        return S3Client.builder()
+                .region(Region.of((String) creds.get("region")))
+                .endpointOverride(URI.create("https://" + creds.get("host")))
+                .credentialsProvider(StaticCredentialsProvider.create(
+                        AwsBasicCredentials.create(
+                                (String) creds.get("access_key_id"),
+                                (String) creds.get("secret_access_key"))))
+                .build();
+    }
+
+    @Bean
+    public String bucketName() {
+        ServiceBindingAccessor accessor = DefaultServiceBindingAccessor.getInstance();
+        ServiceBinding binding = accessor.getServiceBindings().stream()
+                .filter(b -> "objectstore".equals(b.getServiceName().orElse(null)))
+                .findFirst()
+                .orElseThrow();
+        return (String) binding.getCredentials().get("bucket");
+    }
+}

movies-rest/src/main/resources/application.properties

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+server.port=8080