How To Run GDAL from Spring Boot Application in Docker Container

 

 

 Here is how I run GDAL commands from Spring Boot Java application and create a Docker image.

 To keep it simple, just create a simple spring boot application with web dependencies.

@SpringBootApplication
@RestController
public class GDALonDockerApplication {
    public final Logger LOGGER = LoggerFactory.getLogger(GDALonDockerApplication.class);

    public static void main(String[] args) {
        SpringApplication.run(GDALonDockerApplication.class, args);
    }

    @RequestMapping("/")
    public String executeGdalCommand() {
        String[] commands = "gdal_translate -of GTiff -co -COMPRESS=JPEG -co \"TILED=YES\" C46104A1.TIF output.jpeg".split(" ");
        try {

            Process p = Runtime.getRuntime().exec(commands);
            BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()));
            String line = null;

            try {
                while ((line = input.readLine()) != null) {
                    LOGGER.info(line);
                }
            } catch (IOException e) {
                e.printStackTrace();
            }

            p.getErrorStream().close();
            p.getInputStream().close();
            p.getOutputStream().close();
            p.destroy();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        return "GDAL command executed! Well done!";
    }

    @GetMapping(value = "/output")
    public ResponseEntity<Resource> getOutput() {
        Path path = Paths.get("./");
        try {
            return ResponseEntity.ok().header(HttpHeaders.CONTENT_DISPOSITION,
                    "attachment; filename=\"output.jpeg\"").body(new UrlResource(path.resolve("output.jpeg").toUri()));
        } catch (MalformedURLException e) {
            throw new RuntimeException(e);
        }
    }
}

 To dockerize the app, use this Dockerfile.

FROM openjdk:11-jdk-slim-buster
ARG JAR_FILE=target/*.jar
COPY ${JAR_FILE} app.jar
COPY C46104A1.TIF C46104A1.TIF
RUN apt-get update
RUN apt-get -y install libgdal-dev
RUN apt-get -y install gdal-data
RUN apt-get -y install gdal-bin
RUN gdalinfo --version
ENTRYPOINT ["java","-jar","/app.jar"]