Add openrewrite module: Boot 2.7 to 3.5 to 4.0 upgrade with OpenRewrite recipes, leftovers and CI gate

Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01Gth99spB1CzQmBFofXmU4Z
2026-09-28 08:40:08 +00:00
parent e4f927d7af
commit b4b43b94bf
24 changed files with 559 additions and 0 deletions
@@ -0,0 +1,32 @@
+<?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 https://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>2.7.18</version>
+    <relativePath/>
+  </parent>
+  <groupId>com.ankurm</groupId>
+  <artifactId>legacy-app</artifactId>
+  <version>1.0.0</version>
+  <properties>
+    <java.version>17</java.version>
+  </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-data-jpa</artifactId></dependency>
+    <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-validation</artifactId></dependency>
+    <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-security</artifactId></dependency>
+    <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId></dependency>
+    <dependency><groupId>com.h2database</groupId><artifactId>h2</artifactId><scope>runtime</scope></dependency>
+    <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency>
+    <dependency><groupId>org.junit.vintage</groupId><artifactId>junit-vintage-engine</artifactId><scope>test</scope></dependency>
+    <dependency><groupId>org.springframework.security</groupId><artifactId>spring-security-test</artifactId><scope>test</scope></dependency>
+  </dependencies>
+  <build>
+    <plugins>
+      <plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin>
+    </plugins>
+  </build>
+</project>
@@ -0,0 +1,7 @@
+package com.ankurm.legacy;
+
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class AuditAutoConfiguration {
+}
@@ -0,0 +1,26 @@
+package com.ankurm.legacy;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.validation.constraints.Email;
+import javax.validation.constraints.NotBlank;
+
+@Entity
+public class Customer {
+	@Id
+	@GeneratedValue
+	private Long id;
+	@NotBlank
+	private String name;
+	@Email
+	private String email;
+
+	protected Customer() {}
+	public Customer(String name, String email) { this.name = name; this.email = email; }
+	public Long getId() { return id; }
+	public String getName() { return name; }
+	public String getEmail() { return email; }
+	public void setName(String name) { this.name = name; }
+	public void setEmail(String email) { this.email = email; }
+}
@@ -0,0 +1,28 @@
+package com.ankurm.legacy;
+
+import java.util.List;
+import javax.annotation.PostConstruct;
+import javax.validation.Valid;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/customers")
+public class CustomerController {
+
+	private final CustomerRepository repository;
+
+	public CustomerController(CustomerRepository repository) { this.repository = repository; }
+
+	@PostConstruct
+	void seed() {
+		repository.save(new Customer("Ada", "[email protected]"));
+	}
+
+	@GetMapping
+	List<Customer> all() { return repository.findAll(); }
+
+	@PostMapping
+	@ResponseStatus(HttpStatus.CREATED)
+	Customer create(@Valid @RequestBody Customer c) { return repository.save(c); }
+}
@@ -0,0 +1,14 @@
+package com.ankurm.legacy;
+
+import javax.persistence.LockModeType;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Lock;
+import org.springframework.data.jpa.repository.QueryHints;
+import javax.persistence.QueryHint;
+
+public interface CustomerRepository extends JpaRepository<Customer, Long> {
+
+	@Lock(LockModeType.PESSIMISTIC_WRITE)
+	@QueryHints(@QueryHint(name = "javax.persistence.lock.timeout", value = "3000"))
+	Customer findFirstByName(String name);
+}
@@ -0,0 +1,11 @@
+package com.ankurm.legacy;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class LegacyApplication {
+	public static void main(String[] args) {
+		SpringApplication.run(LegacyApplication.class, args);
+	}
+}
@@ -0,0 +1,13 @@
+package com.ankurm.legacy;
+
+import org.springframework.stereotype.Component;
+import org.springframework.web.client.RestTemplate;
+
+@Component
+public class RemoteClient {
+	private final RestTemplate rest = new RestTemplate();
+
+	public String fetch(String url) {
+		return rest.getForObject(url, String.class);
+	}
+}
@@ -0,0 +1,19 @@
+package com.ankurm.legacy;
+
+import java.io.IOException;
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import org.springframework.stereotype.Component;
+import org.springframework.web.filter.OncePerRequestFilter;
+
+@Component
+public class RequestLogFilter extends OncePerRequestFilter {
+	@Override
+	protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
+			throws ServletException, IOException {
+		response.setHeader("X-Seen-By", "RequestLogFilter");
+		chain.doFilter(request, response);
+	}
+}
@@ -0,0 +1,17 @@
+package com.ankurm.legacy;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
+
+@Configuration
+@EnableWebSecurity
+public class SecurityConfig extends WebSecurityConfigurerAdapter {
+	@Override
+	protected void configure(HttpSecurity http) throws Exception {
+		http.csrf().disable()
+			.authorizeRequests().antMatchers("/actuator/health").permitAll()
+			.anyRequest().permitAll();
+	}
+}
@@ -0,0 +1 @@
+org.springframework.boot.autoconfigure.EnableAutoConfiguration=com.ankurm.legacy.AuditAutoConfiguration
@@ -0,0 +1,6 @@
+spring.redis.host=localhost
+spring.redis.port=6379
+management.metrics.export.prometheus.enabled=true
+spring.jpa.hibernate.ddl-auto=create-drop
+server.max-http-header-size=16KB
+spring.jpa.properties.javax.persistence.validation.mode=none
@@ -0,0 +1,26 @@
+package com.ankurm.legacy;
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+@AutoConfigureMockMvc
+public class CustomerControllerTest {
+
+	@Autowired MockMvc mvc;
+
+	@Test
+	public void listsSeededCustomer() throws Exception {
+		mvc.perform(get("/customers")).andExpect(status().isOk()).andExpect(jsonPath("$[0].name").value("Ada"));
+	}
+}
				`@@ -0,0 +1 @@`
				`org.springframework.boot.autoconfigure.EnableAutoConfiguration=com.ankurm.legacy.AuditAutoConfiguration`