Update Ruuter to SpringBoot3

Dockerfile

@@ -1,4 +1,4 @@
-FROM eclipse-temurin:17-jdk-alpine as build
+FROM eclipse-temurin:21-jdk-alpine as build
 WORKDIR /workspace/app
 
 COPY gradlew .
@@ -12,7 +12,7 @@ RUN chmod 754 ./gradlew
 RUN ./gradlew -Pprod clean bootJar
 RUN mkdir -p build/libs && (cd build/libs; jar -xf *.jar)
 
-FROM eclipse-temurin:17-jdk-alpine
+FROM eclipse-temurin:21-jdk-alpine
 VOLUME /build/tmp
 
 ARG DEPENDENCY=/workspace/app/build/libs

build.gradle

@@ -1,10 +1,16 @@
+import org.springframework.boot.loader.tools.LoaderImplementation
+
 plugins {
-    id 'org.springframework.boot' version '2.7.0'
+    id 'org.springframework.boot' version '3.2.5'
     id 'io.spring.dependency-management' version '1.1.3'
     id 'java'
     id "org.sonarqube" version "3.5.0.2730"
 }
 
+bootJar {
+    loaderImplementation = LoaderImplementation.CLASSIC
+}
+
 group = 'ee.buerokratt'
 version = '0.0.1-SNAPSHOT'
 
@@ -27,7 +33,13 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-validation'
     implementation 'org.springframework.boot:spring-boot-starter-web'
     implementation 'org.springframework.boot:spring-boot-starter-webflux'
-    implementation 'org.springframework.cloud:spring-cloud-starter-sleuth:3.1.10'
+
+    implementation platform('io.opentelemetry:opentelemetry-bom:1.15.0')
+    implementation 'io.opentelemetry:opentelemetry-api'
+    implementation 'io.opentelemetry:opentelemetry-sdk'
+    implementation 'io.opentelemetry:opentelemetry-context'
+    implementation 'io.opentelemetry:opentelemetry-exporter-logging'
+
     implementation 'com.fasterxml.jackson.dataformat:jackson-dataformat-yaml'
     implementation 'org.graalvm.js:js:23.0.1'
     implementation 'org.graalvm.js:js-scriptengine:23.0.1'
@@ -45,7 +57,7 @@ dependencies {
     testImplementation 'org.mockito:mockito-core:5.6.0'
     testImplementation 'org.mockito:mockito-inline:4.9.0'
     testImplementation 'org.mockito:mockito-junit-jupiter:5.6.0'
-    testImplementation "com.github.tomakehurst:wiremock-jre8:2.35.0"
+    testImplementation 'com.github.tomakehurst:wiremock-jre8:2.35.1'
 }
 
 tasks.named('test') {

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

src/main/java/ee/buerokratt/ruuter/configuration/OpenTelemetryConfig.java

@@ -0,0 +1,32 @@
+package ee.buerokratt.ruuter.configuration;
+
+import io.opentelemetry.api.OpenTelemetry;
+import io.opentelemetry.api.trace.Tracer;
+import io.opentelemetry.sdk.OpenTelemetrySdk;
+import io.opentelemetry.sdk.trace.SdkTracerProvider;
+import io.opentelemetry.sdk.trace.export.BatchSpanProcessor;
+import io.opentelemetry.exporter.logging.LoggingSpanExporter;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class OpenTelemetryConfig {
+
+    @Bean
+    public OpenTelemetry openTelemetry() {
+        // Configure the SDK (feel free to replace the exporter with one that suits your needs)
+        SdkTracerProvider tracerProvider = SdkTracerProvider.builder()
+            .addSpanProcessor(BatchSpanProcessor.builder(new LoggingSpanExporter()).build())
+            .build();
+
+        return OpenTelemetrySdk.builder()
+            .setTracerProvider(tracerProvider)
+            .buildAndRegisterGlobal();
+    }
+
+    @Bean
+    public Tracer tracer() {
+        // This assumes that a default OpenTelemetry has been configured elsewhere
+        return OpenTelemetry.noop().getTracer("ee.buerokratt.ruuter");
+    }
+}

src/main/java/ee/buerokratt/ruuter/controller/DslController.java

@@ -4,9 +4,7 @@
 import ee.buerokratt.ruuter.domain.DslInstance;
 import ee.buerokratt.ruuter.domain.RuuterResponse;
 import ee.buerokratt.ruuter.service.DslService;
-import ee.buerokratt.ruuter.service.exception.StepExecutionException;
 import ee.buerokratt.ruuter.util.LoggingUtils;
-import io.swagger.v3.core.util.Json;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 
@@ -17,13 +15,11 @@
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
 
-import javax.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletRequest;
 
 import java.io.IOException;
-import java.io.InputStreamReader;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
-import java.util.Base64;
 
 import java.util.HashMap;
 import java.util.Map;

src/main/java/ee/buerokratt/ruuter/domain/DslInstance.java

@@ -9,18 +9,18 @@
 import ee.buerokratt.ruuter.service.OpenSearchSender;
 import ee.buerokratt.ruuter.service.exception.StepExecutionException;
 import ee.buerokratt.ruuter.util.LoggingUtils;
+import io.opentelemetry.api.trace.Tracer;
 import lombok.Data;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.cloud.sleuth.Tracer;
+
 import org.springframework.http.HttpStatus;
 
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.function.Function;
-import java.util.logging.Logger;
 import java.util.stream.Collectors;
 @Slf4j
 @Data
@@ -59,7 +59,6 @@ public void execute() {
         recursions = stepNames.stream().collect(Collectors.toMap(Function.identity(), a -> 0));
         try {
             executeStep(stepNames.get(0), stepNames);
-
         } catch (Exception e) {
             LoggingUtils.logError(log, "Error executing DSL: %s".formatted(name), requestOrigin, "", e);
             clearReturnValues();

src/main/java/ee/buerokratt/ruuter/domain/steps/DslStep.java

@@ -9,8 +9,7 @@
 import lombok.Data;
 import lombok.NoArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.cloud.sleuth.Span;
-import org.springframework.cloud.sleuth.Tracer;
+import io.opentelemetry.api.trace.Span;
 import org.springframework.http.HttpStatus;
 import org.springframework.web.client.HttpClientErrorException;
 
@@ -30,10 +29,10 @@ public abstract class DslStep {
     private boolean reloadDsl = false;
 
     public final void execute(DslInstance di) throws StepExecutionException {
-        Span newSpan = di.getTracer().nextSpan().name(name);
+        Span newSpan = di.getTracer().spanBuilder(name).startSpan();
         long startTime = System.currentTimeMillis();
 
-        try (Tracer.SpanInScope ws = di.getTracer().withSpan(newSpan.start())) {
+        try {
             if (sleep != null) {
                 Thread.sleep(sleep);
             }

src/main/java/ee/buerokratt/ruuter/domain/steps/http/HttpStep.java

@@ -67,7 +67,7 @@ protected void executeStepAction(DslInstance di) {
                 setNextStepName(getOnErrorStep());
             }
             else {
-                di.setErrorStatus(response.getStatusCode());
+                di.setErrorStatus(HttpStatus.valueOf(response.getStatusCodeValue()));
                 di.setErrorMessage("HTTP returned with non-OK");
                 throw new IllegalArgumentException();
             }

src/main/java/ee/buerokratt/ruuter/service/DslService.java

@@ -11,7 +11,7 @@
 import io.swagger.v3.oas.models.OpenAPI;
 import io.swagger.v3.core.util.Yaml;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.cloud.sleuth.Tracer;
+import io.opentelemetry.api.trace.Tracer;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Service;

src/main/resources/application.yml

@@ -36,6 +36,15 @@ application:
 #    index: ruuterlog
   httpResponseSizeLimit: 256
 
+management:
+  endpoints:
+    web:
+      exposure:
+        include=prometheus:
+  tracing:
+    enabled:
+      true
+
 spring:
   application:
     name: ruuter