initial commit

This commit is contained in:
Lee 2024-04-23 00:43:05 +01:00
commit 749135a91f
18 changed files with 571 additions and 0 deletions

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target/
!.mvn/wrapper/maven-wrapper.jar
!**/src/main/**/target/
!**/src/test/**/target/
### IntelliJ IDEA ###
.idea/modules.xml
.idea/jarRepositories.xml
.idea/compiler.xml
.idea/libraries/
*.iws
*.iml
*.ipr
### Eclipse ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache
### NetBeans ###
/nbproject/private/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/
build/
!**/src/main/**/build/
!**/src/test/**/build/
### VS Code ###
.vscode/
### Mac OS ###
.DS_Store

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# Default ignored files
/shelf/
/workspace.xml

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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="VcsDirectoryMappings">
<mapping directory="$PROJECT_DIR$" vcs="Git" />
</component>
</project>

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server:
address: 0.0.0.0
port: 80
servlet:
context-path: /
# Spring Configuration
spring:
# Don't include null properties in JSON
jackson:
default-property-inclusion: non_null
data:
# MongoDB - This is used for general data storage
mongodb:
uri: mongodb://root:root@10.0.50.118:27017/
database: paste
paste:
# The length of the ID for the paste
id-length: 6

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<?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>
<groupId>cc.fascinated</groupId>
<artifactId>Paste-Backend</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>3.2.5</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<!-- Build Steps -->
<build>
<finalName>${project.artifactId}</finalName>
<plugins>
<!-- Spring -->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<id>build-info</id>
<goals>
<goal>build-info</goal>
</goals>
<configuration>
<additionalProperties>
<description>${project.description}</description>
</additionalProperties>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- MongoDB for data storage -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<!-- Libraries -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.32</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.14.0</version>
<scope>compile</scope>
</dependency>
</dependencies>
</project>

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package cc.fascinated;
import lombok.SneakyThrows;
import lombok.extern.log4j.Log4j2;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.StandardCopyOption;
import java.util.Objects;
@Log4j2(topic = "Main")
@SpringBootApplication
public class Main {
@SneakyThrows
public static void main(String[] args) {
File config = new File("application.yml");
if (!config.exists()) { // Saving the default config if it doesn't exist locally
Files.copy(Objects.requireNonNull(Main.class.getResourceAsStream("/application.yml")), config.toPath(), StandardCopyOption.REPLACE_EXISTING);
log.info("Saved the default configuration to '{}', please re-launch the application", // Log the default config being saved
config.getAbsolutePath()
);
return;
}
log.info("Found configuration at '{}'", config.getAbsolutePath()); // Log the found config
SpringApplication.run(Main.class, args); // Start the application
}
}

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package cc.fascinated.controller;
import cc.fascinated.model.Paste;
import cc.fascinated.service.PasteService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import java.util.Map;
@RestController
@RequestMapping(value = "/")
public class PasteController {
private final PasteService pasteService;
@Autowired
public PasteController(PasteService pasteService) {
this.pasteService = pasteService;
}
@GetMapping(value = "/")
public ResponseEntity<?> home() {
return ResponseEntity.ok(Map.of(
"status", "OK"
));
}
@PostMapping(value = "/upload")
public ResponseEntity<?> uploadPaste(@RequestBody String content) {
String id = pasteService.createPaste(content);
return ResponseEntity.ok(Map.of("id", id));
}
@GetMapping(value = "/{id}")
public ResponseEntity<Paste> getPaste(@PathVariable String id) {
Paste paste = pasteService.getPaste(id);
return ResponseEntity.ok(paste);
}
}

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package cc.fascinated.exception;
import cc.fascinated.model.response.ErrorResponse;
import io.micrometer.common.lang.NonNull;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.servlet.resource.NoResourceFoundException;
@ControllerAdvice
public final class ExceptionControllerAdvice {
/**
* Handle a raised exception.
*
* @param ex the raised exception
* @return the error response
*/
@ExceptionHandler(Exception.class)
public ResponseEntity<?> handleException(@NonNull Exception ex) {
HttpStatus status = null; // Get the HTTP status
if (ex instanceof NoResourceFoundException) { // Not found
status = HttpStatus.NOT_FOUND;
} else if (ex instanceof UnsupportedOperationException) { // Not implemented
status = HttpStatus.NOT_IMPLEMENTED;
}
if (ex.getClass().isAnnotationPresent(ResponseStatus.class)) { // Get from the @ResponseStatus annotation
status = ex.getClass().getAnnotation(ResponseStatus.class).value();
}
String message = ex.getLocalizedMessage(); // Get the error message
if (message == null) { // Fallback
message = "An internal error has occurred.";
}
// Print the stack trace if no response status is present
if (status == null) {
ex.printStackTrace();
}
if (status == null) { // Fallback to 500
status = HttpStatus.INTERNAL_SERVER_ERROR;
}
return new ResponseEntity<>(new ErrorResponse(status, message), status);
}
}

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package cc.fascinated.exception.impl;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.ResponseStatus;
@ResponseStatus(HttpStatus.BAD_REQUEST)
public class BadRequestException extends RuntimeException {
public BadRequestException(String message) {
super(message);
}
}

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package cc.fascinated.exception.impl;
import lombok.experimental.StandardException;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.ResponseStatus;
@StandardException
@ResponseStatus(HttpStatus.NOT_FOUND)
public class ResourceNotFoundException extends RuntimeException { }

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package cc.fascinated.model;
import io.micrometer.common.lang.NonNull;
import lombok.AllArgsConstructor;
import lombok.Getter;
import org.springframework.data.annotation.Id;
@AllArgsConstructor
@Getter
public class Paste {
/**
* The id of the paste.
*/
@Id @NonNull
private final String id;
/**
* The content of the paste.
*/
@NonNull
private final String content;
}

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package cc.fascinated.model.response;
import io.micrometer.common.lang.NonNull;
import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.ToString;
import org.springframework.http.HttpStatus;
import java.util.Date;
@Getter @ToString @EqualsAndHashCode
public class ErrorResponse {
/**
* The status code of this error.
*/
@NonNull
private final HttpStatus status;
/**
* The HTTP code of this error.
*/
private final int code;
/**
* The message of this error.
*/
@NonNull private final String message;
/**
* The timestamp this error occurred.
*/
@NonNull private final Date timestamp;
public ErrorResponse(@NonNull HttpStatus status, @NonNull String message) {
this.status = status;
code = status.value();
this.message = message;
timestamp = new Date();
}
}

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package cc.fascinated.repository;
import cc.fascinated.model.Paste;
import org.springframework.data.mongodb.repository.MongoRepository;
/**
* A repository for {@link Paste}s.
*/
public interface PasteRepository extends MongoRepository<Paste, String> { }

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package cc.fascinated.service;
import cc.fascinated.exception.impl.ResourceNotFoundException;
import cc.fascinated.model.Paste;
import cc.fascinated.repository.PasteRepository;
import org.apache.commons.lang3.RandomStringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import java.util.Optional;
@Service
public class PasteService {
/**
* The {@link PasteRepository} instance.
*/
private final PasteRepository pasteRepository;
/**
* The length of the paste id.
*/
@Value("${paste.id-length}")
private int idLength;
@Autowired
public PasteService(PasteRepository pasteRepository) {
this.pasteRepository = pasteRepository;
}
/**
* Creates a new paste with the specified content.
*
* @param content The content of the paste.
* @return The id of the paste.
*/
public String createPaste(String content) {
return pasteRepository.save(new Paste(RandomStringUtils.randomAlphabetic(idLength), content)).getId();
}
/**
* Gets the content of the paste with the specified id.
*
* @param id The id of the paste.
* @return The content of the paste.
*/
public Paste getPaste(String id) {
Optional<Paste> paste = pasteRepository.findById(id);
// The paste does not exist.
if (paste.isEmpty()) {
throw new ResourceNotFoundException("Paste with id '%s' not found".formatted(id));
}
return paste.get();
}
}

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server:
address: 0.0.0.0
port: 80
servlet:
context-path: /
# Spring Configuration
spring:
# Don't include null properties in JSON
jackson:
default-property-inclusion: non_null
data:
# MongoDB - This is used for general data storage
mongodb:
uri: mongodb://localhost:27017
database: test
port: 27017