chore(test): Adds swabbie integration tests for docker builds

settings.gradle

@@ -26,6 +26,7 @@ rootProject.name = 'swabbie'
 
 include 'swabbie-test',
   'swabbie-core',
+  'swabbie-integration',
   'swabbie-retrofit',
   'swabbie-redis',
   'swabbie-aws',

swabbie-integration/src/test/java/com/netflix/spinnaker/swabbie/StandaloneContainerTest.java

@@ -0,0 +1,132 @@
+/*
+ * Copyright 2024 Salesforce, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.netflix.spinnaker.swabbie;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assumptions.assumeTrue;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.util.Map;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestInfo;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.testcontainers.containers.GenericContainer;
+import org.testcontainers.containers.Network;
+import org.testcontainers.containers.output.Slf4jLogConsumer;
+import org.testcontainers.containers.wait.strategy.Wait;
+import org.testcontainers.junit.jupiter.Testcontainers;
+import org.testcontainers.utility.DockerImageName;
+
+@Testcontainers
+class StandaloneContainerTest {
+
+  private static final String REDIS_NETWORK_ALIAS = "redisHost";
+
+  private static final int REDIS_PORT = 6379;
+
+  private static final Logger logger = LoggerFactory.getLogger(StandaloneContainerTest.class);
+
+  private static final Network network = Network.newNetwork();
+
+  // Using Valkey due to licensing
+  private static GenericContainer redis =
+      new GenericContainer(DockerImageName.parse("valkey/valkey:7-bookworm"))
+          .withNetwork(network)
+          .withNetworkAliases(REDIS_NETWORK_ALIAS)
+          .withExposedPorts(REDIS_PORT);
+
+  private static GenericContainer swabbieContainer;
+
+  @BeforeAll
+  static void setupOnce() throws Exception {
+    String fullDockerImageName = System.getenv("FULL_DOCKER_IMAGE_NAME");
+
+    // Skip the tests if there's no docker image.  This allows gradlew build to work.
+    assumeTrue(fullDockerImageName != null);
+
+    redis.start();
+
+    DockerImageName dockerImageName = DockerImageName.parse(fullDockerImageName);
+
+    swabbieContainer =
+        new GenericContainer(dockerImageName)
+            .withNetwork(network)
+            .withExposedPorts(8092)
+            .dependsOn(redis)
+            .waitingFor(Wait.forHealthcheck())
+            .withEnv("SPRING_APPLICATION_JSON", getSpringApplicationJson());
+
+    Slf4jLogConsumer logConsumer = new Slf4jLogConsumer(logger);
+    swabbieContainer.start();
+    swabbieContainer.followOutput(logConsumer);
+  }
+
+  private static String getSpringApplicationJson() throws JsonProcessingException {
+    String redisUrl = "redis://" + REDIS_NETWORK_ALIAS + ":" + REDIS_PORT;
+    logger.info("redisUrl: '{}'", redisUrl);
+    Map<String, String> properties = Map.of("redis.connection", redisUrl);
+    ObjectMapper mapper = new ObjectMapper();
+    return mapper.writeValueAsString(properties);
+  }
+
+  @AfterAll
+  static void cleanupOnce() {
+    if (swabbieContainer != null) {
+      swabbieContainer.stop();
+    }
+
+    if (redis != null) {
+      redis.stop();
+    }
+  }
+
+  @BeforeEach
+  void init(TestInfo testInfo) {
+    System.out.println("--------------- Test " + testInfo.getDisplayName());
+  }
+
+  @Test
+  void testHealthCheck() throws Exception {
+    // hit an arbitrary endpoint
+    HttpRequest request =
+        HttpRequest.newBuilder()
+            .uri(
+                new URI(
+                    "http://"
+                        + swabbieContainer.getHost()
+                        + ":"
+                        + swabbieContainer.getFirstMappedPort()
+                        + "/health"))
+            .GET()
+            .build();
+
+    HttpClient client = HttpClient.newHttpClient();
+
+    HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
+    assertThat(response).isNotNull();
+    logger.info("response: {}, {}", response.statusCode(), response.body());
+    assertThat(response.statusCode()).isEqualTo(200);
+  }
+}

swabbie-integration/src/test/resources/logback.xml

@@ -0,0 +1,36 @@
+<!--
+
+    Copyright 2024 Salesforce, Inc.
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+-->
+<configuration>
+
+    <!-- see https://java.testcontainers.org/supported_docker_environment/logging_config/ -->
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <root level="DEBUG">
+        <appender-ref ref="STDOUT" />
+    </root>
+
+    <logger name="org.testcontainers" level="INFO"/>
+    <logger name="tc" level="INFO"/>
+    <logger name="com.github.dockerjava" level="WARN"/>
+    <logger name="com.github.dockerjava.zerodep.shaded.org.apache.hc.client5.http.wire" level="OFF"/>
+
+</configuration>

swabbie-integration/swabbie-integration.gradle

@@ -0,0 +1,24 @@
+dependencies {
+  testImplementation "com.fasterxml.jackson.core:jackson-databind"
+  testImplementation "org.assertj:assertj-core"
+  testImplementation "org.junit.jupiter:junit-jupiter-api"
+  testImplementation "org.slf4j:slf4j-api"
+  testImplementation "org.testcontainers:testcontainers"
+  testImplementation "org.testcontainers:junit-jupiter"
+  testRuntimeOnly "ch.qos.logback:logback-classic"
+}
+
+test.configure {
+  def fullDockerImageName = System.getenv('FULL_DOCKER_IMAGE_NAME')
+  onlyIf("there is a docker image to test") {
+    fullDockerImageName != null && fullDockerImageName.trim() != ''
+  }
+}
+
+test {
+  // So stdout and stderr from the just-built container are available in CI
+  testLogging.showStandardStreams = true
+
+  // Run the tests when the docker image changes
+  inputs.property 'fullDockerImageName', System.getenv('FULL_DOCKER_IMAGE_NAME')
+}