Add telemetry for basic Java system properties

core/src/main/java/jenkins/telemetry/impl/JavaSystemProperties.java

@@ -0,0 +1,92 @@
+/*
+ * The MIT License
+ *
+ * Copyright (c) 2023, Daniel Beck
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package jenkins.telemetry.impl;
+
+import edu.umd.cs.findbugs.annotations.NonNull;
+import hudson.Extension;
+import java.time.LocalDate;
+import java.util.Map;
+import java.util.TreeMap;
+import jenkins.telemetry.Telemetry;
+import net.sf.json.JSONObject;
+import org.kohsuke.accmod.Restricted;
+import org.kohsuke.accmod.restrictions.NoExternalUse;
+
+/**
+ * Collect the value of various Java system properties describing the environment.
+ */
+@Extension
+@Restricted(NoExternalUse.class)
+public class JavaSystemProperties extends Telemetry {
+    private static final String[] PROPERTIES = new String[] {
+            "file.encoding",
+            "file.separator",
+            "java.vm.name",
+            "java.vm.vendor",
+            "java.vm.version",
+            "os.arch",
+            "os.name",
+            "os.version",
+            "user.language"
+    };
+
+    public Map<String, String> getProperties() {
+        Map<String, String> properties = new TreeMap<>();
+        for (String property : PROPERTIES) {
+            final String value = System.getProperty(property);
+            properties.put(property, value);
+        }
+        return properties;
+    }
+
+    @NonNull
+    @Override
+    public String getDisplayName() {
+        return "System Properties";
+    }
+
+    @NonNull
+    @Override
+    public LocalDate getStart() {
+        return LocalDate.of(2023, 12, 17);
+    }
+
+    @NonNull
+    @Override
+    public LocalDate getEnd() {
+        return LocalDate.of(2024, 4, 1);
+    }
+
+    @Override
+    public JSONObject createContent() {
+        JSONObject o = new JSONObject();
+        for (Map.Entry<String, String> entry : getProperties().entrySet()) {
+            final String value = entry.getValue();
+            o = o.element(entry.getKey(), value == null ? "(undefined)" : value);
+        }
+        o.put("components", buildComponentInformation());
+        return o;
+    }
+}

core/src/main/resources/hudson/model/UsageStatistics/help-usageStatisticsCollected.jelly

@@ -48,7 +48,7 @@
                 <j:if test="${not collector.end.isBefore(now)}">
                     <dt>${collector.displayName}</dt>
                     <dd>
-                        <st:include from="${collector}" optional="true" page="description.jelly"/>
+                        <st:include it="${collector}" optional="true" page="description.jelly"/>
                         <p>
                             Start date: ${collector.start}<br/>
                             End date: ${collector.end}

core/src/main/resources/jenkins/telemetry/impl/JavaSystemProperties/description.jelly

@@ -0,0 +1,24 @@
+<?jelly escape-by-default='true'?>
+<j:jelly xmlns:j="jelly:core">
+    <p>
+        ${%blurb}
+    </p>
+    <ul>
+        <j:forEach items="${it.properties.entrySet()}" var="e">
+            <li>
+                <tt>${e.key}</tt>
+                <j:choose>
+                    <j:when test="${e.value == null}">
+                        (current value: <em>undefined</em>)
+                    </j:when>
+                    <j:otherwise>
+                        (current value: <tt>${e.value}</tt>)
+                    </j:otherwise>
+                </j:choose>
+            </li>
+        </j:forEach>
+    </ul>
+    <p>
+        ${%blurb2}
+    </p>
+</j:jelly>

core/src/main/resources/jenkins/telemetry/impl/JavaSystemProperties/description.properties

@@ -0,0 +1,5 @@
+blurb = This trial collects the values of some basic Java system properties, that provide information about basic system configuration \
+  (OS, Java runtime, default language and character set). \
+  The collected system properties and their values are listed below.
+blurb2 = Additionally, this trial collects the list of installed plugins, their version, and the version of Jenkins. \
+  This data will be used to understand the environments that Jenkins is running in.