Add support for upgrading specific libraries with Bomr

Closes gh-31909

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

@@ -65,12 +65,12 @@ public final class InteractiveUpgradeResolver implements UpgradeResolver {
 	}
 
 	@Override
-	public List<Upgrade> resolveUpgrades(Collection<Library> libraries) {
+	public List<Upgrade> resolveUpgrades(Collection<Library> librariesToUpgrade, Collection<Library> libraries) {
 		Map<String, Library> librariesByName = new HashMap<>();
 		for (Library library : libraries) {
 			librariesByName.put(library.getName(), library);
 		}
-		return libraries.stream().filter((library) -> !library.getName().equals("Spring Boot"))
+		return librariesToUpgrade.stream().filter((library) -> !library.getName().equals("Spring Boot"))
 				.map((library) -> resolveUpgrade(library, librariesByName)).filter(Objects::nonNull)
 				.collect(Collectors.toList());
 	}

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

@@ -28,6 +28,9 @@ import java.util.List;
 import java.util.Optional;
 import java.util.Properties;
 import java.util.Set;
+import java.util.function.Predicate;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
 
 import javax.inject.Inject;
 
@@ -42,6 +45,7 @@ import org.gradle.api.tasks.TaskExecutionException;
 import org.gradle.api.tasks.options.Option;
 
 import org.springframework.boot.build.bom.BomExtension;
+import org.springframework.boot.build.bom.Library;
 import org.springframework.boot.build.bom.bomr.github.GitHub;
 import org.springframework.boot.build.bom.bomr.github.GitHubRepository;
 import org.springframework.boot.build.bom.bomr.github.Issue;
@@ -61,6 +65,8 @@ public class UpgradeBom extends DefaultTask {
 
 	private String milestone;
 
+	private String libraries;
+
 	@Inject
 	public UpgradeBom(BomExtension bom) {
 		this.bom = bom;
@@ -83,6 +89,17 @@ public class UpgradeBom extends DefaultTask {
 		return this.milestone;
 	}
 
+	@Option(option = "libraries", description = "Regular expression that identifies the libraries to upgrade")
+	public void setLibraries(String libraries) {
+		this.libraries = libraries;
+	}
+
+	@Input
+	@org.gradle.api.tasks.Optional
+	public String getLibraries() {
+		return this.libraries;
+	}
+
 	@TaskAction
 	@SuppressWarnings("deprecation")
 	void upgradeDependencies() {
@@ -100,7 +117,7 @@ public class UpgradeBom extends DefaultTask {
 		List<Issue> existingUpgradeIssues = repository.findIssues(issueLabels, milestone);
 		List<Upgrade> upgrades = new InteractiveUpgradeResolver(new MavenMetadataVersionResolver(this.repositoryUrls),
 				this.bom.getUpgrade().getPolicy(), getServices().get(UserInputHandler.class))
-						.resolveUpgrades(this.bom.getLibraries());
+						.resolveUpgrades(matchingLibraries(this.libraries), this.bom.getLibraries());
 		Path buildFile = getProject().getBuildFile().toPath();
 		Path gradleProperties = new File(getProject().getRootProject().getProjectDir(), "gradle.properties").toPath();
 		UpgradeApplicator upgradeApplicator = new UpgradeApplicator(buildFile, gradleProperties);
@@ -140,6 +157,19 @@ public class UpgradeBom extends DefaultTask {
 		}
 	}
 
+	private List<Library> matchingLibraries(String pattern) {
+		if (pattern == null) {
+			return this.bom.getLibraries();
+		}
+		Predicate<String> libraryPredicate = Pattern.compile(pattern).asPredicate();
+		List<Library> matchingLibraries = this.bom.getLibraries().stream()
+				.filter((library) -> libraryPredicate.test(library.getName())).collect(Collectors.toList());
+		if (matchingLibraries.isEmpty()) {
+			throw new InvalidUserDataException("No libraries matched '" + pattern + "'");
+		}
+		return matchingLibraries;
+	}
+
 	private Issue findExistingUpgradeIssue(List<Issue> existingUpgradeIssues, Upgrade upgrade) {
 		String toMatch = "Upgrade to " + upgrade.getLibrary().getName();
 		for (Issue existingUpgradeIssue : existingUpgradeIssues) {

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2022 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.
@@ -30,9 +30,10 @@ interface UpgradeResolver {
 
 	/**
 	 * Resolves the upgrades to be applied to the given {@code libraries}.
-	 * @param libraries the libraries
+	 * @param librariesToUpgrade the libraries to upgrade
+	 * @param libraries all libraries
 	 * @return the upgrades
 	 */
-	List<Upgrade> resolveUpgrades(Collection<Library> libraries);
+	List<Upgrade> resolveUpgrades(Collection<Library> librariesToUpgrade, Collection<Library> libraries);
 
 }