Send the jvm statistics

.gitignore

@@ -57,6 +57,10 @@ typings/
 # dotenv environment variables file
 .env
 
+# java compiled output
+target/
+server/*.jar
+
 out/
 
 .DS_Store

.vscode/launch.json

@@ -18,6 +18,13 @@
             ],
             "preLaunchTask": "npm: watch"
         },
+        {
+            "type": "java",
+            "name": "Attach to Plugin",
+            "request": "attach",
+            "hostName": "localhost",
+            "port": 1044
+        },
         {
             "name": "Extension Tests",
             "type": "extensionHost",

jdtls.ext/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1 @@
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.0/apache-maven-3.5.0-bin.zip

jdtls.ext/com.microsoft.jdtls.daemon.core/.classpath

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11"/>
+	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
+	<classpathentry kind="src" path="src/"/>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>

jdtls.ext/com.microsoft.jdtls.daemon.core/.project

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>com.microsoft.jdtls.daemon.core</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.ManifestBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.SchemaBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
+		<nature>org.eclipse.pde.PluginNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+	<filteredResources>
+		<filter>
+			<id>1665551209562</id>
+			<name></name>
+			<type>30</type>
+			<matcher>
+				<id>org.eclipse.core.resources.regexFilterMatcher</id>
+				<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
+			</matcher>
+		</filter>
+	</filteredResources>
+</projectDescription>

jdtls.ext/com.microsoft.jdtls.daemon.core/.settings/org.eclipse.core.resources.prefs

@@ -0,0 +1,2 @@
+eclipse.preferences.version=1
+encoding/<project>=UTF-8

jdtls.ext/com.microsoft.jdtls.daemon.core/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,8 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
+org.eclipse.jdt.core.compiler.compliance=11
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.release=disabled
+org.eclipse.jdt.core.compiler.source=11

jdtls.ext/com.microsoft.jdtls.daemon.core/.settings/org.eclipse.m2e.core.prefs

@@ -0,0 +1,4 @@
+activeProfiles=
+eclipse.preferences.version=1
+resolveWorkspaceProjects=true
+version=1

jdtls.ext/com.microsoft.jdtls.daemon.core/META-INF/MANIFEST.MF

@@ -0,0 +1,11 @@
+Manifest-Version: 1.0
+Bundle-ManifestVersion: 2
+Bundle-Name: JDTLS Daemon Core
+Bundle-SymbolicName: com.microsoft.jdtls.daemon.core;singleton:=true
+Bundle-Version: 0.1.0
+Bundle-Activator: com.microsoft.jdtls.daemon.core.Activator
+Bundle-RequiredExecutionEnvironment: JavaSE-11
+Import-Package: org.osgi.framework;version="1.3.0"
+Require-Bundle: org.eclipse.core.runtime,
+ org.eclipse.jdt.ls.core
+Bundle-ClassPath: .

jdtls.ext/com.microsoft.jdtls.daemon.core/build.properties

@@ -0,0 +1,5 @@
+source.. = src/
+output.. = bin/
+bin.includes = META-INF/,\
+               .,\
+               plugin.xml

jdtls.ext/com.microsoft.jdtls.daemon.core/plugin.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<?eclipse version="3.4"?>
+<plugin>
+</plugin>

jdtls.ext/com.microsoft.jdtls.daemon.core/pom.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>com.microsoft.jdtls.daemon</groupId>
+        <artifactId>jdtls-daemon-parent</artifactId>
+        <version>0.1.0</version>
+    </parent>
+    <artifactId>com.microsoft.jdtls.daemon.core</artifactId>
+    <packaging>eclipse-plugin</packaging>
+    <name>${base.name} :: JDTLS Daemon Plugin</name>
+    <properties>
+    </properties>
+</project>

jdtls.ext/com.microsoft.jdtls.daemon.core/src/com/microsoft/jdtls/daemon/core/Activator.java

@@ -0,0 +1,81 @@
+/*******************************************************************************
+ * Copyright (c) 2023 Microsoft Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Microsoft Corporation - initial API and implementation
+ *******************************************************************************/
+package com.microsoft.jdtls.daemon.core;
+
+import java.lang.management.GarbageCollectorMXBean;
+import java.lang.management.ManagementFactory;
+import java.util.List;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+
+import org.eclipse.jdt.ls.core.internal.JavaLanguageServerPlugin;
+import org.osgi.framework.BundleActivator;
+import org.osgi.framework.BundleContext;
+
+import com.sun.management.OperatingSystemMXBean;
+
+import com.microsoft.jdtls.daemon.core.model.JvmReport;
+
+public class Activator implements BundleActivator {
+
+    long startTime;
+
+    private final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
+
+    @Override
+    public void start(BundleContext bundleContext) throws Exception {
+        startTime = System.nanoTime();
+        final Runnable gcSampling = new GcSampling();
+        scheduler.scheduleAtFixedRate(gcSampling, 1, 1, TimeUnit.MINUTES);
+    }
+
+    @Override
+    public void stop(BundleContext bundleContext) throws Exception {
+        scheduler.shutdownNow();
+    }
+
+    private final class GcSampling implements Runnable {
+        private long lastGcTime = 0;
+        private long lastCpuTime = 0;
+
+        @Override
+        public void run() {
+            List<GarbageCollectorMXBean> gcBeans = ManagementFactory.getGarbageCollectorMXBeans();
+            long totalGcTime = gcBeans.stream().collect(Collectors.summingLong(GarbageCollectorMXBean::getCollectionTime));
+            long gcTime = totalGcTime - lastGcTime;
+            lastGcTime = totalGcTime;
+
+            OperatingSystemMXBean osBean = ManagementFactory.getPlatformMXBean(
+                OperatingSystemMXBean.class);
+
+            // get cpu time for process.
+            long totalCpuTime = osBean.getProcessCpuTime();
+            long cpuTime;
+            if (totalCpuTime < 0) {
+                cpuTime = -1;
+            } else {
+                cpuTime = totalCpuTime - lastCpuTime;
+                lastCpuTime = totalCpuTime;
+            }
+            cpuTime = TimeUnit.NANOSECONDS.toMillis(cpuTime);
+
+            // get swap load
+            double swapSize = (double) osBean.getTotalSwapSpaceSize();
+            int swapLoad = (int) (swapSize > 0 ? (1 - osBean.getFreeSwapSpaceSize() / swapSize) * 100 : 0);
+
+            JvmReport report = new JvmReport(gcTime, cpuTime, swapLoad);
+            JavaLanguageServerPlugin.getInstance()
+                .getClientConnection().executeClientCommand("_jdtls.daemon.jvmReport", report);
+        }
+    }
+}

jdtls.ext/com.microsoft.jdtls.daemon.core/src/com/microsoft/jdtls/daemon/core/model/JvmReport.java

@@ -0,0 +1,65 @@
+/*******************************************************************************
+ * Copyright (c) 2023 Microsoft Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Microsoft Corporation - initial API and implementation
+ *******************************************************************************/
+package com.microsoft.jdtls.daemon.core.model;
+
+/**
+ * Basic statistics about JVM status.
+ */
+public class JvmReport {
+    /**
+     * Milliseconds used for GC in one time window.
+     */
+    private long gcTime;
+
+    /**
+     * Milliseconds used for the process CPU time in one time window.
+     */
+    private long cpuTime;
+    /**
+     * Swap load
+     */
+    private int swapLoad;
+
+    public JvmReport(long gcTime, long cpuTime, int swapLoad) {
+        this.gcTime = gcTime;
+        this.cpuTime = cpuTime;
+        this.swapLoad = swapLoad;
+    }
+
+    public long getGcTime() {
+        return gcTime;
+    }
+
+    public void setGcTime(long gcTime) {
+        this.gcTime = gcTime;
+    }
+
+    public long getCpuTime() {
+        return cpuTime;
+    }
+
+    public void setCpuTime(long cpuTime) {
+        this.cpuTime = cpuTime;
+    }
+
+    public int getSwapLoad() {
+        return swapLoad;
+    }
+
+    public void setSwapLoad(int swapLoad) {
+        this.swapLoad = swapLoad;
+    }
+
+    @Override
+    public String toString() {
+        return "JvmReport [thisGcTime=" + gcTime + ", thisCpuTime=" + cpuTime + ", swapLoad=" + swapLoad + "]";
+    }
+}

jdtls.ext/com.microsoft.jdtls.daemon.target/com.microsoft.jdtls.daemon.tp.target

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<?pde version="3.8"?>
+<target name="JDTLS.EXT" sequenceNumber="39">
+    <locations>
+        <location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
+            <unit id="org.apache.commons.lang3" version="3.1.0.v201403281430"/>
+            <repository location="https://download.eclipse.org/tools/orbit/R-builds/R20200529191137/repository"/>
+        </location>
+        <location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
+            <unit id="org.eclipse.equinox.core.feature.feature.group" version="0.0.0"/>
+            <unit id="org.eclipse.equinox.core.sdk.feature.group" version="0.0.0"/>
+            <unit id="org.eclipse.equinox.executable.feature.group" version="0.0.0"/>
+            <unit id="org.eclipse.equinox.p2.core.feature.source.feature.group" version="0.0.0"/>
+            <unit id="org.eclipse.equinox.sdk.feature.group" version="0.0.0"/>
+            <unit id="org.eclipse.jdt.source.feature.group" version="0.0.0"/>
+            <unit id="org.eclipse.sdk.feature.group" version="0.0.0"/>
+            <repository location="https://download.eclipse.org/eclipse/updates/4.27/R-4.27-202303020300"/>
+        </location>
+        <location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
+            <unit id="org.eclipse.xtext.xbase.lib" version="0.0.0"/>
+            <repository location="https://download.eclipse.org/releases/2022-12/"/>
+        </location>
+        <location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
+            <unit id="org.eclipse.jdt.ls.core" version="0.0.0"/>
+            <repository location="https://download.eclipse.org/jdtls/snapshots/repository/latest/"/>
+        </location>
+        <location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
+           <repository location="https://download.eclipse.org/lsp4j/updates/releases/0.20.0/"/>
+           <unit id="org.eclipse.lsp4j.sdk.feature.group" version="0.0.0"/>
+        </location>
+    </locations>
+</target>

jdtls.ext/com.microsoft.jdtls.daemon.target/pom.xml

@@ -0,0 +1,12 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>com.microsoft.jdtls.daemon</groupId>
+		<artifactId>jdtls-daemon-parent</artifactId>
+		<version>0.1.0</version>
+	</parent>
+	<artifactId>com.microsoft.jdtls.daemon.tp</artifactId>
+	<name>${base.name} :: Target Platform</name>
+	<packaging>eclipse-target-definition</packaging>
+</project>