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7 changed files with 216 additions and 0 deletions

15
.gitignore vendored Normal file
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target/
*.class
*.jar
*.war
*.ear
*.log
.DS_Store
.idea/
*.iml
*.ipr
*.iws
.vscode/
.mvn/
mvnw
mvnw.cmd

30
Dockerfile Normal file
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# ---- Build stage ----
FROM maven:3.9-eclipse-temurin-17-alpine AS build
WORKDIR /workspace
COPY pom.xml .
RUN mvn dependency:go-offline -q
COPY src ./src
RUN mvn package -DskipTests -q
# ---- Runtime stage ----
FROM eclipse-temurin:17-jre-alpine
WORKDIR /app
# Download OTel Java agent for zero-code auto-instrumentation
RUN wget -q -O /app/otel-agent.jar \
"https://github.com/open-telemetry/opentelemetry-java-instrumentation/releases/download/v2.5.0/opentelemetry-javaagent.jar"
# Non-root user
RUN addgroup -S appgroup && adduser -S appuser -G appgroup
USER appuser
COPY --from=build /workspace/target/*.jar app.jar
EXPOSE 8080
HEALTHCHECK --interval=30s --timeout=5s --start-period=30s --retries=3 \
CMD wget -qO- http://localhost:8080/actuator/health | grep -q '"status":"UP"' || exit 1
ENTRYPOINT ["java", "-javaagent:/app/otel-agent.jar", "-jar", "app.jar"]

57
pom.xml Normal file
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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 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>3.2.4</version>
<relativePath/>
</parent>
<groupId>com.kyndryl.platform</groupId>
<artifactId>test-for-174--011</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>test-for-174--011</name>
<description>Test for issue 174 PR</description>
<properties>
<java.version>17</java.version>
</properties>
<dependencies>
<!-- Web -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- Actuator for health + prometheus metrics -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>io.micrometer</groupId>
<artifactId>micrometer-registry-prometheus</artifactId>
</dependency>
<!-- Test -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-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>

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package com.kyndryl.platform.service;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}

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package com.kyndryl.platform.service;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.*;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicLong;
/**
* A minimal but fully functional CRUD REST API for "items".
*
* Endpoints:
* GET /api/items — list all items
* POST /api/items — create an item { "name": "...", "description": "..." }
* GET /api/items/{id} — get single item
* PUT /api/items/{id} — update item
* DELETE /api/items/{id} — delete item
*
* Health + metrics are exposed via Spring Actuator at /actuator/health and
* /actuator/prometheus (see application.yml).
*/
@RestController
@RequestMapping("/api/items")
public class ItemsController {
record Item(long id, String name, String description) {}
private final Map<Long, Item> store = new ConcurrentHashMap<>();
private final AtomicLong counter = new AtomicLong(1);
@GetMapping
public Collection<Item> list() {
return store.values();
}
@PostMapping
@ResponseStatus(HttpStatus.CREATED)
public Item create(@RequestBody Map<String, String> body) {
long id = counter.getAndIncrement();
Item item = new Item(id,
body.getOrDefault("name", "unnamed"),
body.getOrDefault("description", ""));
store.put(id, item);
return item;
}
@GetMapping("/{id}")
public Item get(@PathVariable long id) {
Item item = store.get(id);
if (item == null) throw new NoSuchElementException("Item not found: " + id);
return item;
}
@PutMapping("/{id}")
public Item update(@PathVariable long id, @RequestBody Map<String, String> body) {
if (!store.containsKey(id)) throw new NoSuchElementException("Item not found: " + id);
Item updated = new Item(id,
body.getOrDefault("name", store.get(id).name()),
body.getOrDefault("description", store.get(id).description()));
store.put(id, updated);
return updated;
}
@DeleteMapping("/{id}")
public Map<String, Object> delete(@PathVariable long id) {
store.remove(id);
return Map.of("deleted", id);
}
}

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server:
port: 8080
spring:
application:
name: test-for-174--011
profiles:
active: ${SPRING_PROFILES_ACTIVE:default}
management:
endpoints:
web:
exposure:
include: health,info,prometheus,metrics
base-path: /actuator
endpoint:
health:
show-details: always
metrics:
tags:
application: test-for-174--011

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package com.kyndryl.platform.service;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest
class ApplicationTests {
@Test
void contextLoads() {
}
}