Ability to download artifacts sources, javadoc, tests and tests sources

vscode-extensions/commons/commons-maven/src/main/java/org/springframework/ide/vscode/commons/maven/MavenBridge.java

@@ -12,9 +12,11 @@
 package org.springframework.ide.vscode.commons.maven;
 
 import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -28,6 +30,7 @@ import java.util.Properties;
 
 import org.apache.maven.DefaultMaven;
 import org.apache.maven.Maven;
+import org.apache.maven.RepositoryUtils;
 import org.apache.maven.artifact.Artifact;
 import org.apache.maven.artifact.InvalidRepositoryException;
 import org.apache.maven.artifact.repository.ArtifactRepository;
@@ -95,6 +98,9 @@ import org.codehaus.plexus.util.IOUtil;
 import org.codehaus.plexus.util.dag.CycleDetectedException;
 import org.eclipse.aether.DefaultRepositorySystemSession;
 import org.eclipse.aether.RepositorySystemSession;
+import org.eclipse.aether.resolution.ArtifactRequest;
+import org.eclipse.aether.resolution.ArtifactResolutionException;
+import org.eclipse.aether.resolution.ArtifactResult;
 import org.slf4j.ILoggerFactory;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -800,5 +806,76 @@ class MavenBridge {
 			}
 		}
 	}
+	
+	public Artifact resolve(String groupId, String artifactId, String version, String type, String classifier,
+			List<ArtifactRepository> remoteRepositories, MavenExecutionRequest request) throws MavenException {
+		Artifact artifact = lookup(RepositorySystem.class).createArtifactWithClassifier(groupId, artifactId, version,
+				type, classifier);
+
+		return resolve(artifact, remoteRepositories, request);
+	}
+
+	public Artifact resolve(final Artifact artifact, List<ArtifactRepository> remoteRepositories,
+			MavenExecutionRequest executionRequest) throws MavenException {
+		if (remoteRepositories == null) {
+			try {
+				remoteRepositories = getArtifactRepositories();
+			} catch (MavenException e) {
+				// we've tried
+				remoteRepositories = Collections.emptyList();
+			}
+		}
+		final List<ArtifactRepository> _remoteRepositories = remoteRepositories;
+
+		org.eclipse.aether.RepositorySystem repoSystem = lookup(org.eclipse.aether.RepositorySystem.class);
+
+		ArtifactRequest request = new ArtifactRequest();
+		request.setArtifact(RepositoryUtils.toArtifact(artifact));
+		request.setRepositories(RepositoryUtils.toRepos(_remoteRepositories));
+
+		ArtifactResult result;
+		try {
+			result = repoSystem.resolveArtifact(createRepositorySession(executionRequest), request);
+		} catch (ArtifactResolutionException ex) {
+			result = ex.getResults().get(0);
+		}
+
+		setLastUpdated(executionRequest.getLocalRepository(), _remoteRepositories, artifact);
+
+		if (result.isResolved()) {
+			artifact.selectVersion(result.getArtifact().getVersion());
+			artifact.setFile(result.getArtifact().getFile());
+			artifact.setResolved(true);
+		} else {
+			throw new MavenException(result.getExceptions().toArray(new Exception[result.getExceptions().size()]));
+		}
+
+		return artifact;
+	}
+
+	/* package */void setLastUpdated(ArtifactRepository localRepository, List<ArtifactRepository> remoteRepositories,
+			Artifact artifact) throws MavenException {
+
+		Properties lastUpdated = loadLastUpdated(localRepository, artifact);
+
+		String timestamp = Long.toString(System.currentTimeMillis());
+
+		for (ArtifactRepository repository : remoteRepositories) {
+			lastUpdated.setProperty(getLastUpdatedKey(repository, artifact), timestamp);
+		}
+
+		File lastUpdatedFile = getLastUpdatedFile(localRepository, artifact);
+		try {
+			lastUpdatedFile.getParentFile().mkdirs();
+			BufferedOutputStream os = new BufferedOutputStream(new FileOutputStream(lastUpdatedFile));
+			try {
+				lastUpdated.store(os, null);
+			} finally {
+				IOUtil.close(os);
+			}
+		} catch (IOException ex) {
+			throw new MavenException(ex);
+		}
+	}
 
 }

vscode-extensions/commons/commons-maven/src/main/java/org/springframework/ide/vscode/commons/maven/MavenCore.java

@@ -65,6 +65,11 @@ import com.google.common.base.Suppliers;
  */
 public class MavenCore {
 	
+	private static final String CLASSIFIER_SOURCES = "sources";
+	private static final String CLASSIFIER_JAVADOC = "javadoc";
+	private static final String CLASSIFIER_TESTS = "tests";
+	private static final String CLASSIFIER_TESTSOURCES = "test-sources";
+	  
 	public static final String JAVA_IO_TMPDIR = "java.io.tmpdir";
 	private static final String JAVA_HOME = "java.home";
 	private static final String JAVA_RUNTIME_VERSION = "java.runtime.version";
@@ -235,6 +240,22 @@ public class MavenCore {
 		return artifacts;
 	}
 	
+	public Artifact getSources(Artifact artifact) throws MavenException {
+		return maven.resolve(artifact.getGroupId(), artifact.getArtifactId(), artifact.getVersion(), artifact.getType(), CLASSIFIER_SOURCES, null, maven.createExecutionRequest());
+	}
+	
+	public Artifact getJavadoc(Artifact artifact) throws MavenException {
+		return maven.resolve(artifact.getGroupId(), artifact.getArtifactId(), artifact.getVersion(), artifact.getType(), CLASSIFIER_JAVADOC, null, maven.createExecutionRequest());
+	}
+	
+	public Artifact getTests(Artifact artifact) throws MavenException {
+		return maven.resolve(artifact.getGroupId(), artifact.getArtifactId(), artifact.getVersion(), artifact.getType(), CLASSIFIER_TESTS, null, maven.createExecutionRequest());
+	}
+	
+	public Artifact getTestSources(Artifact artifact) throws MavenException {
+		return maven.resolve(artifact.getGroupId(), artifact.getArtifactId(), artifact.getVersion(), artifact.getType(), CLASSIFIER_TESTSOURCES, null, maven.createExecutionRequest());
+	}
+ 	
 	public Stream<Path> getJreLibs() throws MavenException {
 		String s = (String) maven.createExecutionRequest().getSystemProperties().get(JAVA_BOOT_CLASS_PATH);
 		return Arrays.stream(s.split(File.pathSeparator)).map(File::new).filter(f -> f.canRead()).map(f -> Paths.get(f.toURI()));

vscode-extensions/commons/commons-maven/src/main/java/org/springframework/ide/vscode/commons/maven/MavenException.java

@@ -10,6 +10,9 @@
  *******************************************************************************/
 package org.springframework.ide.vscode.commons.maven;
 
+import java.util.Arrays;
+import java.util.stream.Collectors;
+
 /**
  * Wrapper for Maven exceptions
  * 
@@ -20,13 +23,13 @@ public class MavenException extends Exception {
 
 	private static final long serialVersionUID = 1L;
 	
-	private Throwable t;
+	private Throwable[] t;
 	
 	public MavenException() {
 		super();
 	}
 	
-	public MavenException(Throwable t) {
+	public MavenException(Throwable... t) {
 		super();
 		this.t = t;
 	}
@@ -34,7 +37,7 @@ public class MavenException extends Exception {
 	@Override
 	public String getMessage() {
 		if (t != null) {
-			return t.getMessage();
+			return String.join("\n", Arrays.stream(t).map(t -> t.getMessage()).collect(Collectors.toList()));
 		}
 		return super.getMessage();
 	}	

vscode-extensions/commons/project-test-harness/.gitignore

@@ -1,2 +1,2 @@
 **/classpath.txt
-
+**/bin/**