Make java 9 work

This is the xplugins side of elastic/elasticsearchelastic/elasticsearch#18496
Most of the changes here are related to javax.activation.

Original commit: elastic/x-pack-elasticsearch@2a47f94ab5

elasticsearch/license/base/build.gradle

@@ -5,6 +5,8 @@ dependencies {
   testCompile "org.elasticsearch.test:framework:${version}"
 }
 
+compactProfile = 'full'
+
 dependencyLicenses.enabled = false
 
 jar {

elasticsearch/x-pack/build.gradle

@@ -35,6 +35,10 @@ dependencies {
   compile 'com.googlecode.owasp-java-html-sanitizer:owasp-java-html-sanitizer:r239'
   compile 'com.google.guava:guava:16.0.1' // needed by watcher for the html sanitizer and shield tests for jimfs
   compile 'com.sun.mail:javax.mail:1.5.3'
+  // HACK: java 9 removed javax.activation from the default modules, so instead of trying to add modules, which would have
+  // to be conditionalized for java 8/9, we pull in the classes directly
+  compile 'javax.activation:activation:1.1'
+
   testCompile 'org.subethamail:subethasmtp:3.1.7'
   // needed for subethasmtp, has @GuardedBy annotation
   testCompile 'com.google.code.findbugs:jsr305:3.0.1'

elasticsearch/x-pack/marvel/src/test/java/org/elasticsearch/marvel/agent/exporter/AbstractExporterTemplateTestCase.java

@@ -121,7 +121,8 @@ public abstract class AbstractExporterTemplateTestCase extends MarvelIntegTestCa
         assertNotNull(exporters);
 
         // Wait for exporting bulks to be ready to export
-        assertBusy(() -> assertThat(exporters.openBulk(), notNullValue()));
+        Runnable busy = () -> assertThat(exporters.openBulk(), notNullValue());
+        assertBusy(busy);
         exporters.export(collector.collect());
     }
 

elasticsearch/x-pack/marvel/src/test/java/org/elasticsearch/marvel/agent/exporter/http/HttpExporterTemplateTests.java

@@ -93,7 +93,8 @@ public class HttpExporterTemplateTests extends AbstractExporterTemplateTestCase
 
     @Override
     protected void awaitIndexExists(String index) throws Exception {
-        assertBusy(() -> assertThat("could not find index " + index, dispatcher.hasIndex(index), is(true)), 10, TimeUnit.SECONDS);
+        Runnable busy = () -> assertThat("could not find index " + index, dispatcher.hasIndex(index), is(true));
+        assertBusy(busy, 10, TimeUnit.SECONDS);
     }
 
     class MockServerDispatcher extends Dispatcher {

elasticsearch/x-pack/shield/src/test/java/org/elasticsearch/shield/authc/file/tool/UsersToolTests.java

@@ -87,6 +87,7 @@ public class UsersToolTests extends CommandTestCase {
     public static void closeJimfs() throws IOException {
         if (jimfs != null) {
             jimfs.close();
+            jimfs = null;
         }
     }
 

elasticsearch/x-pack/src/main/java/org/elasticsearch/xpack/XPackPlugin.java

@@ -35,6 +35,8 @@ import org.elasticsearch.xpack.common.secret.SecretModule;
 import org.elasticsearch.xpack.extensions.XPackExtension;
 import org.elasticsearch.xpack.extensions.XPackExtensionsService;
 import org.elasticsearch.xpack.notification.Notification;
+import org.elasticsearch.xpack.notification.email.Account;
+import org.elasticsearch.xpack.notification.email.support.BodyPartSource;
 import org.elasticsearch.xpack.rest.action.RestXPackInfoAction;
 import org.elasticsearch.xpack.common.text.TextTemplateModule;
 import org.elasticsearch.xpack.watcher.Watcher;
@@ -81,6 +83,9 @@ public class XPackPlugin extends Plugin {
                 throw bogus; // some other bug
             }
         }
+        // some classes need to have their own clinit blocks
+        BodyPartSource.init();
+        Account.init();
     }
 
     protected final Settings settings;

elasticsearch/x-pack/src/main/java/org/elasticsearch/xpack/notification/email/Account.java

@@ -32,13 +32,6 @@ public class Account {
     static final String SMTP_PROTOCOL = "smtp";
 
     static {
-        // required as java doesn't always find the correct mailcap to properly handle mime types
-        final MailcapCommandMap mailcap = (MailcapCommandMap) CommandMap.getDefaultCommandMap();
-        mailcap.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html");
-        mailcap.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml");
-        mailcap.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain");
-        mailcap.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed");
-        mailcap.addMailcap("message/rfc822;; x-java-content-handler=com.sun.mail.handlers.message_rfc822");
         SecurityManager sm = System.getSecurityManager();
         if (sm != null) {
             sm.checkPermission(new SpecialPermission());
@@ -46,12 +39,22 @@ public class Account {
         AccessController.doPrivileged(new PrivilegedAction<Void>() {
             @Override
             public Void run() {
+                // required as java doesn't always find the correct mailcap to properly handle mime types
+                final MailcapCommandMap mailcap = (MailcapCommandMap) CommandMap.getDefaultCommandMap();
+                mailcap.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html");
+                mailcap.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml");
+                mailcap.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain");
+                mailcap.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed");
+                mailcap.addMailcap("message/rfc822;; x-java-content-handler=com.sun.mail.handlers.message_rfc822");
                 CommandMap.setDefaultCommandMap(mailcap);
                 return null;
             }
         });
     }
 
+    // exists only to allow ensuring class is initialized
+    public static void init() {}
+
     static final Settings DEFAULT_SMTP_TIMEOUT_SETTINGS = Settings.builder()
             .put("connection_timeout", TimeValue.timeValueMinutes(2))
             .put("write_timeout", TimeValue.timeValueMinutes(2))

elasticsearch/x-pack/src/main/java/org/elasticsearch/xpack/notification/email/support/BodyPartSource.java

@@ -5,18 +5,30 @@
  */
 package org.elasticsearch.xpack.notification.email.support;
 
+import org.elasticsearch.SpecialPermission;
 import org.elasticsearch.common.xcontent.ToXContent;
 
+import javax.activation.CommandMap;
 import javax.activation.FileTypeMap;
 import javax.mail.MessagingException;
 import javax.mail.internet.MimeBodyPart;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
 
 /**
  *
  */
 public abstract class BodyPartSource implements ToXContent {
 
-    protected static FileTypeMap fileTypeMap = FileTypeMap.getDefaultFileTypeMap();
+    protected static FileTypeMap fileTypeMap;
+    static {
+        SecurityManager sm = System.getSecurityManager();
+        if (sm != null) {
+            sm.checkPermission(new SpecialPermission());
+        }
+        fileTypeMap = AccessController.doPrivileged(
+            (PrivilegedAction<FileTypeMap>)() -> FileTypeMap.getDefaultFileTypeMap());
+    }
 
     protected final String id;
     protected final String name;
@@ -46,4 +58,7 @@ public abstract class BodyPartSource implements ToXContent {
 
     public abstract MimeBodyPart bodyPart() throws MessagingException;
 
+    // exists only to allow ensuring class is initialized
+    public static void init() {}
+
 }

elasticsearch/x-pack/src/main/plugin-metadata/plugin-security.policy

@@ -11,6 +11,7 @@ grant {
   // to load the class with the application class loader
   permission java.lang.RuntimePermission "setContextClassLoader";
   permission java.lang.RuntimePermission "getClassLoader";
+  permission java.lang.RuntimePermission "accessClassInPackage.com.sun.activation.registries";
 
   // bouncy castle
   permission java.security.SecurityPermission "putProviderProperty.BC";

elasticsearch/x-pack/watcher/src/test/java/org/elasticsearch/xpack/watcher/history/HistoryTemplateEmailMappingsTests.java

@@ -6,6 +6,9 @@
 package org.elasticsearch.xpack.watcher.history;
 
 import org.elasticsearch.action.search.SearchResponse;
+import org.elasticsearch.common.logging.ESLogger;
+import org.elasticsearch.common.logging.ESLoggerFactory;
+import org.elasticsearch.common.logging.Loggers;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.search.aggregations.Aggregations;
 import org.elasticsearch.search.aggregations.bucket.terms.Terms;
@@ -15,6 +18,9 @@ import org.elasticsearch.xpack.watcher.execution.ExecutionState;
 import org.elasticsearch.xpack.watcher.test.AbstractWatcherIntegrationTestCase;
 import org.elasticsearch.xpack.watcher.transport.actions.put.PutWatchResponse;
 import org.junit.After;
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.BeforeClass;
 
 import static org.elasticsearch.search.aggregations.AggregationBuilders.terms;
 import static org.elasticsearch.search.builder.SearchSourceBuilder.searchSource;
@@ -32,15 +38,18 @@ import static org.hamcrest.Matchers.notNullValue;
  * not analyzed so they can be used in aggregations
  */
 public class HistoryTemplateEmailMappingsTests extends AbstractWatcherIntegrationTestCase {
+    private static final ESLogger logger = Loggers.getLogger(HistoryTemplateEmailMappingsTests.class);
     static final String USERNAME = "_user";
     static final String PASSWORD = "_passwd";
 
-    private EmailServer server;
+    private static EmailServer server;
 
-    @After
+    @AfterClass
-    public void cleanup() throws Exception {
+    public static void cleanup() throws Exception {
+        if (server != null) {
             server.stop();
         }
+    }
 
     @Override
     protected boolean timeWarped() {
@@ -52,12 +61,16 @@ public class HistoryTemplateEmailMappingsTests extends AbstractWatcherIntegratio
         return false; // remove shield noise from this test
     }
 
-    @Override
+    @BeforeClass
-    protected Settings nodeSettings(int nodeOrdinal) {
+    public static void setupEmailServer() {
         if(server == null) {
             //Need to construct the Email Server here as this happens before init()
             server = EmailServer.localhost("2500-2600", USERNAME, PASSWORD, logger);
         }
+    }
+
+    @Override
+    protected Settings nodeSettings(int nodeOrdinal) {
         return Settings.builder()
                 .put(super.nodeSettings(nodeOrdinal))