минимальный функционал maven

может сохранять артефакты;
может отдавать артефакты

build.gradle

@@ -5,26 +5,16 @@ plugins {
 }
 
 group = 'ru.di9'
-version = '0.0.1-SNAPSHOT'
-sourceCompatibility = '11'
-
-configurations {
-	compileOnly {
-		extendsFrom annotationProcessor
-	}
-}
+version = '1.0-SNAPSHOT'
+sourceCompatibility = JavaVersion.VERSION_11
 
 repositories {
 	mavenCentral()
 }
 
 dependencies {
-	implementation 'org.springframework.boot:spring-boot-starter-web'
-	compileOnly 'org.projectlombok:lombok'
-	annotationProcessor 'org.projectlombok:lombok'
-	testImplementation 'org.springframework.boot:spring-boot-starter-test'
-}
+	annotationProcessor('org.projectlombok:lombok')
+	compileOnly('org.projectlombok:lombok')
 
-tasks.named('test') {
-	useJUnitPlatform()
+	implementation('org.springframework.boot:spring-boot-starter-web')
 }

src/main/java/ru/di9/mirror/Application.java

@@ -4,10 +4,10 @@ import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
 @SpringBootApplication
-public class ProjectMirrorApplication {
+public class Application {
 
 	public static void main(String[] args) {
-		SpringApplication.run(ProjectMirrorApplication.class, args);
+		SpringApplication.run(Application.class, args);
 	}
 
 }

src/main/java/ru/di9/mirror/controller/WebController.java

@@ -0,0 +1,74 @@
+package ru.di9.mirror.controller;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.core.io.InputStreamResource;
+import org.springframework.core.io.Resource;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+
+import javax.servlet.http.HttpServletRequest;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+@Slf4j
+@Controller
+@RequestMapping(path = "/maven")
+public class WebController {
+    private final Path storagePath;
+
+    public WebController(@Value("${maven.storage:./storage}") String storagePath) {
+        this.storagePath = Paths.get(storagePath);
+    }
+
+    @RequestMapping(path = "/{*path}")
+    public ResponseEntity<Resource> httpGetFile(@PathVariable("path") String httpPath) throws IOException {
+        ResponseEntity<Resource> responseEntity;
+
+        Path path = resolve(httpPath);
+        if (Files.notExists(path)) {
+            responseEntity = ResponseEntity.notFound().build();
+        } else {
+            long size = Files.size(path);
+
+            responseEntity = ResponseEntity.ok()
+                    .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + path.toFile().getName() + "\"")
+                    .contentType(MediaType.APPLICATION_OCTET_STREAM)
+                    .contentLength(size)
+                    .body(new InputStreamResource(Files.newInputStream(path)));
+        }
+
+        return responseEntity;
+    }
+
+    @RequestMapping(path = "/{*path}", method = RequestMethod.PUT, consumes = MediaType.APPLICATION_OCTET_STREAM_VALUE)
+    public ResponseEntity<?> httpPutFile(@PathVariable("path") String httpPath, HttpServletRequest httpRequest) throws IOException {
+        Path path = resolve(httpPath);
+        Files.createDirectories(path.getParent());
+
+        try (InputStream inputStream = httpRequest.getInputStream();
+             OutputStream outputStream = Files.newOutputStream(path)
+        ) {
+            byte[] buff = new byte[8 * 1024];
+            int len;
+            while ((len = inputStream.read(buff)) > 0) {
+                outputStream.write(buff, 0, len);
+            }
+        }
+
+        return ResponseEntity.noContent().build();
+    }
+
+    private Path resolve(String httpPath) {
+        return storagePath.resolve(httpPath.substring(1));
+    }
+}

src/main/resources/application.yml

@@ -1 +1,8 @@
+server:
+  address: 127.0.0.1
+  port: 8080
 
+debug: false
+
+maven:
+  storage: './storage'

src/test/java/ru/di9/mirror/ProjectMirrorApplicationTests.java

@@ -1,13 +0,0 @@
-package ru.di9.mirror;
-
-import org.junit.jupiter.api.Test;
-import org.springframework.boot.test.context.SpringBootTest;
-
-@SpringBootTest
-class ProjectMirrorApplicationTests {
-
-	@Test
-	void contextLoads() {
-	}
-
-}