Add log handlers (#1372)

Signed-off-by: Sheng Chen <sheche@microsoft.com>

extension/jdtls.ext/com.microsoft.gradle.bs.importer/src/com/microsoft/gradle/bs/importer/GradleBuildClient.java

@@ -14,6 +14,7 @@ import org.eclipse.jdt.ls.core.internal.JavaClientConnection.JavaLanguageClient;
 import ch.epfl.scala.bsp4j.BuildClient;
 import ch.epfl.scala.bsp4j.DidChangeBuildTarget;
 import ch.epfl.scala.bsp4j.LogMessageParams;
+import ch.epfl.scala.bsp4j.MessageType;
 import ch.epfl.scala.bsp4j.PublishDiagnosticsParams;
 import ch.epfl.scala.bsp4j.ShowMessageParams;
 import ch.epfl.scala.bsp4j.TaskDataKind;
@@ -23,7 +24,21 @@ import ch.epfl.scala.bsp4j.TaskStartParams;
 
 public class GradleBuildClient implements BuildClient {
 
+    /**
+     * Client command to append build logs to the output channel.
+     */
     private static final String CLIENT_APPEND_BUILD_LOG_CMD = "_java.gradle.buildServer.appendBuildLog";
+
+    /**
+     * Client command to append event logs to the output channel.
+     */
+    private static final String CLIENT_BUILD_LOG_CMD = "_java.gradle.buildServer.log";
+
+    /**
+     * Client command to send telemetry data to the LS client.
+     */
+    private static final String CLIENT_BUILD_SEND_TELEMETRY = "_java.gradle.buildServer.sendTelemetry";
+
     private ConcurrentHashMap<String, ProgressReport> taskMap = new ConcurrentHashMap<>();
 
     private final JavaLanguageClient lsClient;
@@ -33,9 +48,10 @@ public class GradleBuildClient implements BuildClient {
     }
 
     @Override
-    public void onBuildLogMessage(LogMessageParams arg0) {
-        // TODO Auto-generated method stub
-        throw new UnsupportedOperationException("Unimplemented method 'onBuildLogMessage'");
+    public void onBuildLogMessage(LogMessageParams params) {
+        MessageType type = params.getType();
+        String cmd = type == MessageType.LOG ? CLIENT_BUILD_SEND_TELEMETRY : CLIENT_BUILD_LOG_CMD;
+        this.lsClient.sendNotification(new ExecuteCommandParams(cmd, Arrays.asList(params.getMessage())));
     }
 
     @Override

extension/src/bs/BuildServerController.ts

@@ -1,13 +1,19 @@
 import { Disposable, ExtensionContext, OutputChannel, commands, languages, window } from "vscode";
 import { GradleBuildLinkProvider } from "./GradleBuildLinkProvider";
+import { sendInfo } from "vscode-extension-telemetry-wrapper";
 
 const APPEND_BUILD_LOG_CMD = "_java.gradle.buildServer.appendBuildLog";
+const LOG_CMD = "_java.gradle.buildServer.log";
+const SEND_TELEMETRY_CMD = "_java.gradle.buildServer.sendTelemetry";
+
 export class BuildServerController implements Disposable {
     private disposable: Disposable;
     private buildOutputChannel: OutputChannel;
+    private logOutputChannel: OutputChannel;
 
     public constructor(readonly context: ExtensionContext) {
         this.buildOutputChannel = window.createOutputChannel("Build Server for Gradle (Build)", "gradle-build");
+        this.logOutputChannel = window.createOutputChannel("Build Server for Gradle (Log)");
         this.disposable = Disposable.from(
             this.buildOutputChannel,
             languages.registerDocumentLinkProvider({ language: "gradle-build", scheme: 'output' }, new GradleBuildLinkProvider()),
@@ -19,6 +25,17 @@ export class BuildServerController implements Disposable {
                     }
                 }
             }),
+
+            this.logOutputChannel,
+            commands.registerCommand(LOG_CMD, (msg: string) => {
+                if (msg) {
+                    this.logOutputChannel.appendLine(msg);
+                }
+            }),
+            commands.registerCommand(SEND_TELEMETRY_CMD, (jsonString: string) => {
+                const log = JSON.parse(jsonString);
+                sendInfo("", log);
+            }),
         );
     }