Enhance bomr to handle libraries that use a version property

Closes gh-20478

buildSrc/src/main/java/org/springframework/boot/build/bom/bomr/UpgradeApplicator.java

@@ -0,0 +1,78 @@
+/*
+ * Copyright 2012-2020 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 org.springframework.boot.build.bom.bomr;
+
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * {@code UpgradeApplicator} is used to apply an {@link Upgrade}. Modifies the bom
+ * configuration in the build file or a version property in {@code gradle.properties}.
+ *
+ * @author Andy Wilkinson
+ */
+class UpgradeApplicator {
+
+	private final Path buildFile;
+
+	private final Path gradleProperties;
+
+	UpgradeApplicator(Path buildFile, Path gradleProperties) {
+		this.buildFile = buildFile;
+		this.gradleProperties = gradleProperties;
+	}
+
+	Path apply(Upgrade upgrade) throws IOException {
+		String buildFileContents = new String(Files.readAllBytes(this.buildFile), StandardCharsets.UTF_8);
+		Matcher matcher = Pattern.compile("library\\(\"" + upgrade.getLibrary().getName() + "\", \"(.+)\"\\)")
+				.matcher(buildFileContents);
+		if (!matcher.find()) {
+			throw new IllegalStateException("Failed to find definition for library '" + upgrade.getLibrary().getName()
+					+ "' in bom '" + this.buildFile + "'");
+		}
+		String version = matcher.group(1);
+		if (version.startsWith("${") && version.endsWith("}")) {
+			updateGradleProperties(upgrade, version);
+			return this.gradleProperties;
+		}
+		else {
+			updateBuildFile(upgrade, buildFileContents);
+			return this.buildFile;
+		}
+	}
+
+	private void updateGradleProperties(Upgrade upgrade, String version) throws IOException {
+		String property = version.substring(2, version.length() - 1);
+		String gradlePropertiesContents = new String(Files.readAllBytes(this.gradleProperties), StandardCharsets.UTF_8);
+		String modified = gradlePropertiesContents.replace(property + "=" + upgrade.getLibrary().getVersion(),
+				property + "=" + upgrade.getVersion());
+		Files.write(this.gradleProperties, modified.getBytes(StandardCharsets.UTF_8), StandardOpenOption.CREATE);
+	}
+
+	private void updateBuildFile(Upgrade upgrade, String buildFileContents) throws IOException {
+		String modified = buildFileContents.replace(
+				"library(\"" + upgrade.getLibrary().getName() + "\", \"" + upgrade.getLibrary().getVersion() + "\")",
+				"library(\"" + upgrade.getLibrary().getName() + "\", \"" + upgrade.getVersion() + "\")");
+		Files.write(this.buildFile, modified.getBytes(StandardCharsets.UTF_8), StandardOpenOption.CREATE);
+	}
+
+}

buildSrc/src/main/java/org/springframework/boot/build/bom/bomr/UpgradeBom.java

@@ -20,10 +20,7 @@ import java.io.File;
 import java.io.FileReader;
 import java.io.IOException;
 import java.io.Reader;
-import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
 import java.nio.file.Path;
-import java.nio.file.StandardOpenOption;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
@@ -84,14 +81,16 @@ public class UpgradeBom extends DefaultTask {
 				new MavenMetadataVersionResolver(Arrays.asList("https://repo1.maven.org/maven2/")),
 				this.bom.getUpgrade().getPolicy(), getServices().get(UserInputHandler.class))
 						.resolveUpgrades(this.bom.getLibraries());
+		Path buildFile = getProject().getBuildFile().toPath();
+		Path gradleProperties = new File(getProject().getRootProject().getProjectDir(), "gradle.properties").toPath();
+		UpgradeApplicator upgradeApplicator = new UpgradeApplicator(buildFile, gradleProperties);
 		for (Upgrade upgrade : upgrades) {
 			String title = "Upgrade to " + upgrade.getLibrary().getName() + " " + upgrade.getVersion();
 			System.out.println(title);
 			try {
-				Path buildFile = getProject().getBuildFile().toPath();
-				applyChanges(upgrade, buildFile);
+				Path modified = upgradeApplicator.apply(upgrade);
 				int issueNumber = repository.openIssue(title, issueLabels, milestone);
-				if (new ProcessBuilder().command("git", "add", buildFile.toFile().getAbsolutePath()).start()
+				if (new ProcessBuilder().command("git", "add", modified.toFile().getAbsolutePath()).start()
 						.waitFor() != 0) {
 					throw new IllegalStateException("git add failed");
 				}
@@ -122,14 +121,6 @@ public class UpgradeBom extends DefaultTask {
 		}
 	}
 
-	private void applyChanges(Upgrade upgrade, Path buildFile) throws IOException {
-		String contents = new String(Files.readAllBytes(buildFile), StandardCharsets.UTF_8);
-		String modified = contents.replace(
-				"library(\"" + upgrade.getLibrary().getName() + "\", \"" + upgrade.getLibrary().getVersion() + "\")",
-				"library(\"" + upgrade.getLibrary().getName() + "\", \"" + upgrade.getVersion() + "\")");
-		Files.write(buildFile, modified.getBytes(StandardCharsets.UTF_8), StandardOpenOption.CREATE);
-	}
-
 	private Milestone determineMilestone(GitHubRepository repository) {
 		if (this.milestone == null) {
 			return null;

buildSrc/src/test/java/org/springframework/boot/build/bom/bomr/UpgradeApplicatorTests.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2020 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 org.springframework.boot.build.bom.bomr;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.util.Properties;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+import org.springframework.boot.build.bom.Library;
+import org.springframework.boot.build.bom.bomr.version.DependencyVersion;
+import org.springframework.util.FileCopyUtils;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link UpgradeApplicator}.
+ *
+ * @author Andy Wilkinson
+ */
+class UpgradeApplicatorTests {
+
+	@TempDir
+	File temp;
+
+	@Test
+	void whenUpgradeIsAppliedToLibraryWithVersionThenBomIsUpdated() throws IOException {
+		File bom = new File(this.temp, "bom.gradle");
+		FileCopyUtils.copy(new File("src/test/resources/bom.gradle"), bom);
+		File gradleProperties = new File(this.temp, "gradle.properties");
+		FileCopyUtils.copy(new File("src/test/resources/gradle.properties"), gradleProperties);
+		new UpgradeApplicator(bom.toPath(), gradleProperties.toPath())
+				.apply(new Upgrade(new Library("ActiveMQ", DependencyVersion.parse("5.15.11"), null, null),
+						DependencyVersion.parse("5.16")));
+		String bomContents = new String(Files.readAllBytes(bom.toPath()), StandardCharsets.UTF_8);
+		assertThat(bomContents).contains("library(\"ActiveMQ\", \"5.16\")");
+	}
+
+	@Test
+	void whenUpgradeIsAppliedToLibraryWithVersionPropertyThenGradlePropertiesIsUpdated() throws IOException {
+		File bom = new File(this.temp, "bom.gradle");
+		FileCopyUtils.copy(new File("src/test/resources/bom.gradle"), bom);
+		File gradleProperties = new File(this.temp, "gradle.properties");
+		FileCopyUtils.copy(new File("src/test/resources/gradle.properties"), gradleProperties);
+		new UpgradeApplicator(bom.toPath(), gradleProperties.toPath())
+				.apply(new Upgrade(new Library("Kotlin", DependencyVersion.parse("1.3.70"), null, null),
+						DependencyVersion.parse("1.3.71")));
+		Properties properties = new Properties();
+		try (InputStream in = new FileInputStream(gradleProperties)) {
+			properties.load(in);
+		}
+		assertThat(properties).containsEntry("kotlinVersion", "1.3.71");
+	}
+
+}

buildSrc/src/test/resources/bom.gradle

@@ -0,0 +1,51 @@
+bom {
+	library("ActiveMQ", "5.15.11") {
+		group("org.apache.activemq") {
+			modules = [
+				"activemq-amqp",
+				"activemq-blueprint",
+				"activemq-broker",
+				"activemq-camel",
+				"activemq-client",
+				"activemq-console" {
+					exclude group: "commons-logging", module: "commons-logging"
+				},
+				"activemq-http",
+				"activemq-jaas",
+				"activemq-jdbc-store",
+				"activemq-jms-pool",
+				"activemq-kahadb-store",
+				"activemq-karaf",
+				"activemq-leveldb-store" {
+					exclude group: "commons-logging", module: "commons-logging"
+				},
+				"activemq-log4j-appender",
+				"activemq-mqtt",
+				"activemq-openwire-generator",
+				"activemq-openwire-legacy",
+				"activemq-osgi",
+				"activemq-partition",
+				"activemq-pool",
+				"activemq-ra",
+				"activemq-run",
+				"activemq-runtime-config",
+				"activemq-shiro",
+				"activemq-spring" {
+					exclude group: "commons-logging", module: "commons-logging"
+				},
+				"activemq-stomp",
+				"activemq-web"
+			]
+		}
+	}
+	library("Kotlin", "${kotlinVersion}") {
+		group("org.jetbrains.kotlin") {
+			imports = [
+				"kotlin-bom"
+			]
+			plugins = [
+				"kotlin-maven-plugin"
+			]
+		}
+	}
+}

buildSrc/src/test/resources/gradle.properties

@@ -0,0 +1,4 @@
+a=alpha
+b=bravo
+kotlinVersion=1.3.70
+t=tango