Consume lemminx as a bundle from the OSGi runtime

Currently lemminx is embedded into WWD what has some disadvantages:

- the jar gets bigger
- the embedded jar needs to be extracted before it can be used
- version bumps are required for lemminx updates
- lemminx can't be updated independent from WWD

This now adds a require-bundle to the manifest (so we are getting a
certain version we are compatible with) and uses the bundle wiring to
get hold of the bundle and then transform it into a file path.

Signed-off-by: Christoph Läubrich <[email protected]>

Author: laeubi

org.eclipse.wildwebdeveloper.xml/META-INF/MANIFEST.MF

@@ -23,7 +23,8 @@ Require-Bundle: org.eclipse.tm4e.registry;bundle-version="0.3.0",
  org.eclipse.text,
  org.eclipse.jface.text;bundle-version="3.20.100",
  com.google.gson,
- org.eclipse.tm4e.language_pack
+ org.eclipse.tm4e.language_pack,
+ org.eclipse.lemminx.uber-jar;bundle-version="[0.29.0,1.0.0)"
 Bundle-ActivationPolicy: lazy
 Bundle-Activator: org.eclipse.wildwebdeveloper.xml.internal.Activator
 Export-Package: org.eclipse.wildwebdeveloper.xml;x-friends:="org.eclipse.m2e.editor.lemminx",

org.eclipse.wildwebdeveloper.xml/build.properties

@@ -4,7 +4,6 @@ bin.includes = META-INF/,\
                .,\
                plugin.xml,\
                plugin.properties,\
-               language-servers/server/,\
                language-configurations/,\
                grammars/,\
                snippets/,\

org.eclipse.wildwebdeveloper.xml/pom.xml

@@ -23,34 +23,6 @@
 					</filesets>
 				</configuration>
 			</plugin>
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-dependency-plugin</artifactId>
-				<version>3.8.1</version>
-				<executions>
-					<execution>
-						<id>fetch-lemminx</id>
-						<phase>generate-resources</phase>
-						<goals>
-							<goal>copy</goal>
-						</goals>
-						<configuration>
-							<artifactItems>
-								<artifactItem>
-									<groupId>org.eclipse.lemminx</groupId>
-									<artifactId>org.eclipse.lemminx</artifactId>
-									<!-- Bumping to version with API breakage needs to bump bundle version at least by +0.1.0 -->
-									<version>0.29.0</version>
-									<!-- classifier:uber includes all dependencies -->
-									<classifier>uber</classifier>
-								</artifactItem>
-							</artifactItems>
-							<outputDirectory>language-servers/server</outputDirectory>
-							<stripVersion>true</stripVersion>
-						</configuration>
-					</execution>
-				</executions>
-			</plugin>
 			<plugin>
 				<groupId>org.eclipse.tycho</groupId>
 				<artifactId>tycho-packaging-plugin</artifactId>
@@ -62,17 +34,4 @@
 			</plugin>
 		</plugins>
 	</build>
-
-	<repositories>
-		<repository>
-			<id>lemminx-releases</id>
-			<url>https://repo.eclipse.org/content/repositories/lemminx-releases/</url>
-			<snapshots>
-				<enabled>false</enabled>
-			</snapshots>
-			<releases>
-				<enabled>true</enabled>
-			</releases>
-		</repository>
-	</repositories>
 </project>

org.eclipse.wildwebdeveloper.xml/src/org/eclipse/wildwebdeveloper/xml/internal/XMLLanguageServer.java

@@ -16,7 +16,6 @@
 import java.io.File;
 import java.io.IOException;
 import java.net.URI;
-import java.net.URL;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -42,8 +41,12 @@
 import org.eclipse.lsp4e.server.ProcessStreamConnectionProvider;
 import org.eclipse.lsp4j.DidChangeConfigurationParams;
 import org.eclipse.wildwebdeveloper.xml.internal.ui.preferences.XMLPreferenceServerConstants;
+import org.osgi.framework.Bundle;
 import org.osgi.framework.BundleContext;
+import org.osgi.framework.FrameworkUtil;
 import org.osgi.framework.ServiceReference;
+import org.osgi.framework.wiring.BundleWire;
+import org.osgi.framework.wiring.BundleWiring;
 
 @SuppressWarnings("restriction")
 public class XMLLanguageServer extends ProcessStreamConnectionProvider {
@@ -103,21 +106,36 @@ public XMLLanguageServer() {
 		commands.add("-Duser.home=" + System.getProperty("user.home"));
 		commands.add("-classpath");
 		try {
-			URL url = FileLocator
-					.toFileURL(getClass().getResource("/language-servers/server/org.eclipse.lemminx-uber.jar"));
+			Bundle lemminxBundle = getLemminxBundle();
+			File file = FileLocator.getBundleFileLocation(lemminxBundle)
+					.orElseThrow(() -> new IllegalStateException("Can't determine lemminx file location"));
 			List<String> extensionJarPaths = getExtensionJarPaths();
-			String uberJarPath = new java.io.File(url.getPath()).getAbsolutePath();
+			String uberJarPath = file.getAbsolutePath();
 			jarPaths.add(uberJarPath);
 			jarPaths.addAll(extensionJarPaths);
 			commands.add(String.join(System.getProperty("path.separator"), jarPaths));
-			commands.add("org.eclipse.lemminx.XMLServerLauncher");
+			String mainClass = lemminxBundle.getHeaders().get("Main-Class");
+			commands.add(mainClass);
 			setCommands(commands);
 			setWorkingDirectory(System.getProperty("user.dir"));
-		} catch (IOException e) {
+		} catch (RuntimeException e) {
 			ILog.get().error(e.getMessage(), e);
 		}
 	}
 
+	private Bundle getLemminxBundle() {
+		Bundle self = FrameworkUtil.getBundle(getClass());
+		BundleWiring wiring = self.adapt(BundleWiring.class);
+		List<BundleWire> wires = wiring.getRequiredWires("osgi.wiring.bundle");
+		for (BundleWire bundleWire : wires) {
+			Bundle bundle = bundleWire.getProvider().getBundle();
+			if (bundle.getSymbolicName().equals("org.eclipse.lemminx.uber-jar")) {
+				return bundle;
+			}
+		}
+		throw new IllegalStateException("can't find the lemminx bundle!");
+	}
+
 	private Collection<? extends String> getProxySettings() {
 		Map<String, String> res = new HashMap<>();
 		for (Entry<Object, Object> entry : System.getProperties().entrySet()) {

target-platform/target-platform.target

@@ -54,5 +54,22 @@
 			</dependency>
 		</dependencies>
 	</location>
+	<location includeDependencyDepth="none" includeDependencyScopes="compile" label="LemMinX" missingManifest="error" type="Maven">
+		<dependencies>
+			<dependency>
+				<groupId>org.eclipse.lemminx</groupId>
+				<artifactId>org.eclipse.lemminx</artifactId>
+				<version>0.29.0</version>
+				<type>jar</type>
+				<classifier>uber</classifier>
+			</dependency>
+		</dependencies>
+		<repositories>
+			<repository>
+				<id>lemminx-releases</id>
+				<url>https://repo.eclipse.org/content/repositories/lemminx-releases/</url>
+			</repository>
+		</repositories>
+	</location>
 </locations>
-</target>
+</target>