initial release

.gitignore

+
+# Created by https://www.gitignore.io/api/java,maven,macos,linux,eclipse,windows,netbeans,intellij
+# Edit at https://www.gitignore.io/?templates=java,maven,macos,linux,eclipse,windows,netbeans,intellij
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+
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+Servers/
+*.log
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+
+### Eclipse ###
+
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+*~.nib
+local.properties
+.settings/
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+
+# External tool builders
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+
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+
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+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
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+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+
+### Intellij Patch ###
+# Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721
+
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+# .idea/misc.xml
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+
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+
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+
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+
+# Directories potentially created on remote AFP share
+.AppleDB
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+Temporary Items
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+
+### Maven ###
+target/
+pom.xml.tag
+pom.xml.releaseBackup
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+release.properties
+dependency-reduced-pom.xml
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+.mvn/timing.properties
+.mvn/wrapper/maven-wrapper.jar
+
+### NetBeans ###
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+
+### Windows ###
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+
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+[Dd]esktop.ini
+
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+$RECYCLE.BIN/
+
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+*.cab
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+
+# End of https://www.gitignore.io/api/java,maven,macos,linux,eclipse,windows,netbeans,intellij
+/.gradle/
+
+
+### Gradle ###
+.gradle
+**/build/
+!src/**/build/
+
+# Ignore Gradle GUI config
+gradle-app.setting
+
+# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
+!gradle-wrapper.jar
+
+# Avoid ignore Gradle wrappper properties
+!gradle-wrapper.properties
+
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+
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+
+### Gradle Patch ###
+# Java heap dump
+*.hprof
+
+# End of https://www.toptal.com/developers/gitignore/api/gradle
+/CityDoctorWebService/CityDoctorWebService.iml
+/Extensions/CityDoctorWebService/CityDoctorWebService.iml
+/.idea/codeStyles/codeStyleConfig.xml
+/GUISettings.properties
+/.idea/inspectionProfiles/Project_Default.xml

pom.xml

+<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<groupId>de.hft.stuttgart</groupId>
+	<artifactId>ifc-converter-server</artifactId>
+	<version>1.0.0</version>
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter</artifactId>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<version>3.8.1</version>
+				<configuration>
+					<source>17</source>
+					<target>17</target>
+				</configuration>
+			</plugin>
+			<plugin>
+				<groupId>org.codehaus.mojo</groupId>
+				<artifactId>exec-maven-plugin</artifactId>
+				<version>3.0.0</version>
+				<configuration>
+					<mainClass>de.hft.stuttgart.lgl.ifc.ConverterApplication</mainClass>
+				</configuration>
+			</plugin>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<version>2.6.3</version>
+				<configuration>
+					<executable>true</executable>
+				</configuration>
+				<executions>
+					<execution>
+						<goals>
+							<goal>repackage</goal>
+						</goals>
+						<configuration>
+							<finalName>convert</finalName>
+							<classifier>spring-boot</classifier>
+							<mainClass>de.hft.stuttgart.lgl.ifc.ConverterApplication</mainClass>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
+
+	<dependencyManagement>
+		<dependencies>
+			<dependency>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-dependencies</artifactId>
+				<version>2.6.3</version>
+				<scope>import</scope>
+				<type>pom</type>
+			</dependency>
+		</dependencies>
+	</dependencyManagement>
+</project>
\ No newline at end of file

src/main/java/de/hft/stuttgart/lgl/ifc/ConverterApplication.java

+package de.hft.stuttgart.lgl.ifc;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class ConverterApplication {
+	
+	public static void main(String[] args) {
+		SpringApplication.run(ConverterApplication.class, args);
+	}
+
+}

src/main/java/de/hft/stuttgart/lgl/ifc/controller/ConverterEndpoints.java

+package de.hft.stuttgart.lgl.ifc.controller;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+import java.util.concurrent.TimeUnit;
+
+import javax.servlet.http.HttpServletRequest;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.CrossOrigin;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+import org.springframework.web.servlet.mvc.method.annotation.StreamingResponseBody;
+
+@CrossOrigin
+@RestController
+public class ConverterEndpoints {
+
+	@Value("${converter.executable}")
+	private String converterExecutable;
+
+	@Autowired
+	public ConverterEndpoints() {
+		// constructor for injection
+	}
+
+	private static final Logger logger = LoggerFactory.getLogger(ConverterEndpoints.class);
+	
+	@PostMapping(path = "/convert",produces = MediaType.APPLICATION_OCTET_STREAM_VALUE)
+	public ResponseEntity<StreamingResponseBody> checkAddress(@RequestParam("file") MultipartFile file,
+			HttpServletRequest request) {
+		logger.info("Convert request: {}", file.getOriginalFilename());
+		
+		UUID id = UUID.randomUUID();
+		Path workFolder = Paths.get("work");
+		Path ifcFile = workFolder.resolve(id.toString() + ".ifc");
+		Path output = workFolder.resolve(id.toString() + ".glb");
+		try {
+			Files.createDirectories(workFolder);
+			Files.copy(file.getInputStream(), ifcFile);
+			List<String> commands = new ArrayList<>();
+			commands.add(converterExecutable);
+			commands.add(ifcFile.toAbsolutePath().toString());
+			commands.add(output.toAbsolutePath().toString());
+			ProcessBuilder processBuilder = new ProcessBuilder(commands);
+			Process process = processBuilder.start();
+			Thread t = new Thread(() -> {
+				try (BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
+					String line = reader.readLine();
+					while (line != null) {
+						line = reader.readLine();
+					}
+				} catch (IOException e) {
+				}
+			});
+			t.setDaemon(true);
+			t.start();
+			process.waitFor(10, TimeUnit.MINUTES);
+			int exitValue = process.exitValue();
+			logger.info("Converter exit code for file {} is {}", file.getOriginalFilename(), exitValue);
+			Files.delete(ifcFile);
+			String originalFileName = file.getOriginalFilename();
+			if (originalFileName == null) {
+				originalFileName = "converted.ifc";
+			}
+			String outputFileName = originalFileName.substring(0, originalFileName.lastIndexOf('.')) + ".glb";
+			return ResponseEntity.ok().contentType(MediaType.parseMediaType("application/octet-stream"))
+					.header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + outputFileName + "\"")
+					.body(new StreamingResponseBody() {
+						@Override
+						public void writeTo(OutputStream outputStream) throws IOException {
+							try {
+								Files.copy(output, outputStream);
+							} finally {
+								Files.delete(output);
+							}
+						}
+					});
+		} catch (IOException | InterruptedException e) {
+			logger.error("Failed to convert file: {}", file.getOriginalFilename(), e);
+			try {
+				Files.delete(output);
+				Files.delete(ifcFile);
+			} catch (IOException ex) {
+			}
+			return ResponseEntity.internalServerError().build();
+		}
+	}
+
+}

src/main/resources/application-dev.properties

+converter.executable=ifcConvert.exe
+
+server.port=50000
+logging.file.name=backend-converter.log
+logging.level.root=info
+logging.logback.rollingpolicy.file-name-pattern=backend-converter-%d{yyyy-MM-dd}.%i.gz
+logging.logback.rollingpolicy.max-file-size=10MB
+
+# Enable multipart uploads
+spring.servlet.multipart.enabled=true
+# Threshold after which files are written to disk.
+spring.servlet.multipart.file-size-threshold=5MB
+# Max file size.
+spring.servlet.multipart.max-file-size=2000MB
+# Max Request Size
+spring.servlet.multipart.max-request-size=2000MB

src/main/resources/application-prod.properties

+converter.executable=./IfcConvert
+
+server.port=50000
+logging.file.name=backend-converter.log
+logging.level.root=info
+logging.logback.rollingpolicy.file-name-pattern=backend-converter-%d{yyyy-MM-dd}.%i.gz
+logging.logback.rollingpolicy.max-file-size=10MB
+
+# Enable multipart uploads
+spring.servlet.multipart.enabled=true
+# Threshold after which files are written to disk.
+spring.servlet.multipart.file-size-threshold=50MB
+# Max file size.
+spring.servlet.multipart.max-file-size=2000MB
+# Max Request Size
+spring.servlet.multipart.max-request-size=2000MB

src/main/resources/application.properties

+spring.profiles.active=dev
\ No newline at end of file