Restore Format and CheckFormat for saml2 Projects

- Update the way that the saml2 projects were dependent
on identity-provider resource files.
- Use TestContainers to simplify runtime dependencies
- Update compose.yml to use Docker-standard interpolation

Closes gh-335

servlet/spring-boot/java/saml2/identity-provider/build.gradle

@@ -13,8 +13,9 @@ repositories {
 
 
 dependencies {
-	implementation 'org.springframework.boot:spring-boot-starter'
-	runtimeOnly "org.springframework.boot:spring-boot-docker-compose"
+	implementation 'org.springframework.boot:spring-boot-starter-test'
+	implementation "org.testcontainers:testcontainers:1.20.3"
+	implementation "org.testcontainers:junit-jupiter:1.20.3"
 }
 
 tasks.withType(Test).configureEach {

servlet/spring-boot/java/saml2/identity-provider/src/main/java/example/ComposeFilePropertyPlaceholderApplicationContextInitializer.java

@@ -1,30 +0,0 @@
-/*
- * Copyright 2002-2021 the original author or authors.
- *
- * 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
- *
- *      https://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 example;
-
-import org.springframework.context.ApplicationContextInitializer;
-import org.springframework.context.ConfigurableApplicationContext;
-
-public class ComposeFilePropertyPlaceholderApplicationContextInitializer
-		implements ApplicationContextInitializer<ConfigurableApplicationContext> {
-
-	@Override
-	public void initialize(ConfigurableApplicationContext context) {
-		DockerProtocolResolver.environment = context.getEnvironment();
-	}
-
-}

servlet/spring-boot/java/saml2/identity-provider/src/main/java/example/DockerProtocolResolver.java

@@ -1,56 +0,0 @@
-/*
- * Copyright 2002-2021 the original author or authors.
- *
- * 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
- *
- *      https://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 example;
-
-import java.io.File;
-import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
-
-import org.springframework.core.env.Environment;
-import org.springframework.core.io.FileSystemResource;
-import org.springframework.core.io.ProtocolResolver;
-import org.springframework.core.io.Resource;
-import org.springframework.core.io.ResourceLoader;
-
-public class DockerProtocolResolver implements ProtocolResolver {
-
-	private static final String PREFIX = "docker:";
-
-	static Environment environment;
-
-	@Override
-	public Resource resolve(String location, ResourceLoader resourceLoader) {
-		if (!location.startsWith(PREFIX)) {
-			return null;
-		}
-		Resource resource = resourceLoader.getResource(location.replace(PREFIX, "classpath:"));
-		try {
-			String content = resource.getContentAsString(StandardCharsets.UTF_8);
-			content = environment.resolvePlaceholders(content);
-			File file = resource.getFile();
-			File tmp = new File(file.getAbsolutePath() + ".tmp");
-			tmp.createNewFile();
-			Files.write(tmp.toPath(), content.getBytes(StandardCharsets.UTF_8));
-			tmp.deleteOnExit();
-			return new FileSystemResource(tmp);
-		}
-		catch (Exception ex) {
-			throw new RuntimeException(ex);
-		}
-	}
-
-}

servlet/spring-boot/java/saml2/identity-provider/src/main/java/example/IdentityProviderTestExecutionListener.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2024 the original author or authors.
+ *
+ * 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
+ *
+ *      https://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 example;
+
+import java.io.IOException;
+import java.net.ServerSocket;
+
+import org.testcontainers.containers.DockerComposeContainer;
+
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.test.context.TestContext;
+import org.springframework.test.context.support.AbstractTestExecutionListener;
+
+public class IdentityProviderTestExecutionListener extends AbstractTestExecutionListener {
+
+	private DockerComposeContainer<?> composed;
+
+	@Override
+	public void beforeTestClass(TestContext testContext) throws Exception {
+		String port = Integer.toString(getRandomPort());
+		System.setProperty("SERVER_PORT", port);
+		System.setProperty("server.port", port);
+		this.composed = new DockerComposeContainer<>("saml2", new ClassPathResource("docker/compose.yml").getFile())
+			.withEnv("SERVER_PORT", port);
+		this.composed.start();
+	}
+
+	@Override
+	public void afterTestClass(TestContext testContext) throws Exception {
+		this.composed.stop();
+	}
+
+	static int getRandomPort() throws IOException {
+		try (ServerSocket serverSocket = new ServerSocket(0)) {
+			return serverSocket.getLocalPort();
+		}
+	}
+
+}

servlet/spring-boot/java/saml2/identity-provider/src/main/resources/META-INF/spring.factories

@@ -1,2 +1 @@
-org.springframework.context.ApplicationContextInitializer=example.ComposeFilePropertyPlaceholderApplicationContextInitializer
-org.springframework.core.io.ProtocolResolver=example.DockerProtocolResolver
+org.springframework.test.context.TestExecutionListener=example.IdentityProviderTestExecutionListener

servlet/spring-boot/java/saml2/identity-provider/src/main/resources/docker/compose.yml

@@ -5,7 +5,7 @@ services:
       - ./metadata/authsources.php:/var/www/simplesamlphp/config/authsources.php
       - ./metadata/one-relyingparties.php:/var/www/simplesamlphp/metadata/saml20-sp-remote.php
     environment:
-      - PORT=${SERVER_PORT:8080}
+      - PORT=${SERVER_PORT:-8080}
       
   idp-two.7f000001.nip.io:
     image: kristophjunge/test-saml-idp:1.15
@@ -13,7 +13,7 @@ services:
       - ./metadata/authsources.php:/var/www/simplesamlphp/config/authsources.php
       - ./metadata/two-relyingparties.php:/var/www/simplesamlphp/metadata/saml20-sp-remote.php
     environment:
-      - PORT=${SERVER_PORT:8080}
+      - PORT=${SERVER_PORT:-8080}
 
   nginx:
     image: nginx:stable