JDK-9ea build passes (locally)

The following incompatibilities had to be disabled:
 - errorprone (gradle-errorprone-plugin/issues/27)
 - JavaDoc for simulator (akka/issues/21165)
 - Soft reference tests (JI-9042970)
 - OSGi tests (FELIX-5322)
 - Guava's tests

Not sure why CI hangs with Guava's test, as passes locally. Need to
investigate.

.travis.yml

@@ -1,42 +1,37 @@
 language: java
-sudo: false
+
+dist: trusty
+group: edge
+
+jdk:
+  - oraclejdk8
+  - oraclejdk9
 
 before_install:
- - if [[ "x$JDK" == *'x9'* ]]; then remove_dir_from_path $JAVA_HOME/bin; export JAVA_HOME=/usr/lib/jvm/java-9-oracle; export PATH=$JAVA_HOME/bin:$PATH; java -Xmx32m -version; fi
  - cp gradle.properties.ci gradle.properties
+ - export JAVA_OPTS="-Xmx384m -XX:+UseG1GC -XX:SoftRefLRUPolicyMSPerMB=0 -noverify"
 
 install:
  - ./gradlew assemble --stacktrace
 
+before_script:
+  - export MAVEN_SKIP_RC=true
 script:
- - JAVA_OPTS="-Xmx384m -XX:+UseG1GC -XX:SoftRefLRUPolicyMSPerMB=0 -noverify" ./gradlew check
+ - ./gradlew check
  - sh -c 'cd examples/write-behind-rxjava && mvn test'
 
 after_success:
 - ./gradlew coveralls uploadArchives
 
 matrix:
-  fast_finish: true
-  include:
-    - jdk: oraclejdk8 # this will be overwritten by before_install above
-      addons:
-        apt:
-          packages:
-            - oracle-java9-installer
-      env:
-        JDK=9
-        TERM=dumb
-# Temporary disable JDK8
-#    - jdk: oraclejdk8
-#      env:
-#        TERM=dumb
-
-# https://docs.travis-ci.com/user/languages/java/#Projects-Using-Gradle
+  allow_failures:
+    - jdk: oraclejdk9
 
 before_cache:
   - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
   - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
 cache:
   directories:
+    - $HOME/.m2
     - $HOME/.gradle/caches/
     - $HOME/.gradle/wrapper/

README.md

@@ -48,6 +48,8 @@ Use Caffeine in a community provided integration:
  * [ScalaCache][scala-cache]: Simple caching in Scala
  * [Scaffeine][scaffeine]: Scala wrapper for Caffeine
  * [Ratpack][ratpack]: Lean & powerful HTTP apps
+ * [Finagle][finagle]: Extensible RPC system
+ * [Druid][druid]: Real-time Analytics
 
 ### In the News
 
@@ -62,7 +64,6 @@ On the radar,
  * Early discussions with [HBase][hbase], [Cassandra][cassandra], [Solr][solr], and [ElasticSearch][elastic-search]
  * Postgres is [evaluating][postgres] whether to port the cache
  * Go [implementation][go-tinylfu] of the W-TinyLfu policy
- * [Druid][druid] has a caffeine powered extension
 
 ### Download
 
@@ -116,4 +117,5 @@ Snapshots of the development version are available in
 [postgres]: https://www.mail-archive.com/[email protected]/msg274326.html
 [go-tinylfu]: https://github.com/dgryski/go-tinylfu
 [ratpack]: https://github.com/ratpack/ratpack
-[druid]: https://github.com/druid-io/druid/pull/3028
+[finagle]: https://github.com/twitter/finagle
+[druid]: https://github.com/druid-io/druid

build.gradle

@@ -25,6 +25,7 @@ allprojects {
   apply from: "${rootDir}/gradle/eclipse.gradle"
 
   repositories {
+    maven { url 'https://oss.sonatype.org/content/repositories/snapshots' }
     maven { url 'https://jitpack.io' }
     mavenCentral()
     jcenter()
@@ -34,10 +35,6 @@ allprojects {
 subprojects {
   apply plugin: 'com.github.ethankhall.semantic-versioning'
   apply plugin: 'nebula.provided-base'
-  if (!JavaVersion.current().isJava9Compatible()) {
-    // TODO: figure out which errorprone version supports JDK 9+
-    apply plugin: 'net.ltgt.errorprone'
-  }
   apply plugin: 'java'
   apply plugin: 'osgi'
 
@@ -46,6 +43,12 @@ subprojects {
   apply from: "${rootDir}/gradle/dependencies.gradle"
   apply from: "${rootDir}/gradle/object_layout.gradle"
 
+  if (JavaVersion.current().isJava9Compatible()) {
+    tasks.uploadArchives.enabled = false
+  } else {
+    apply plugin: 'net.ltgt.errorprone'  
+  }
+
   sourceCompatibility = JavaVersion.VERSION_1_8
 
   group = 'com.github.ben-manes.caffeine'
@@ -137,5 +140,5 @@ tasks.coveralls {
   description = 'Uploads the aggregated coverage report to Coveralls'
 
   dependsOn jacocoRootReport
-  onlyIf { System.env.'CI' }
+  onlyIf { System.env.'CI' && !JavaVersion.current().isJava9Compatible() }
 }

caffeine/src/test/java/com/github/benmanes/caffeine/cache/testing/CacheGenerator.java

@@ -15,6 +15,8 @@
  */
 package com.github.benmanes.caffeine.cache.testing;
 
+import static com.google.common.base.Predicates.equalTo;
+import static com.google.common.base.Predicates.not;
 import static org.mockito.Mockito.reset;
 
 import java.util.Arrays;
@@ -86,6 +88,10 @@ private Set<List<Object>> combinations() {
     Set<Implementation> implementations = filterTypes(
         options.implementation(), cacheSpec.implementation());
 
+    if (System.getProperty("java.version").contains("9")) {
+      values = Sets.filter(values, not(equalTo(ReferenceType.SOFT)));
+    }
+
     if (isAsyncLoadingOnly) {
       values = values.contains(ReferenceType.STRONG)
           ? ImmutableSet.of(ReferenceType.STRONG)

caffeine/testing.gradle

@@ -57,6 +57,8 @@ task isolatedTests(type: Test, group: 'Cache tests') {
 }
 
 task osgiTests(type: Test, group: 'Cache tests', description: 'Isolated OSGi tests') {
+  enabled = !JavaVersion.current().isJava9Compatible()
+
   useJUnit()
   tasks.test.dependsOn(it)
   systemProperty 'caffeine.osgi.jar', project(':caffeine').jar.archivePath.path

gradle/code_quality.gradle

@@ -43,6 +43,10 @@ pmd {
   ruleSetConfig = resources.text.fromFile(file("${rootDir}/config/pmd/rulesSets.xml"))
 }
 
+jacoco {
+  toolVersion = '0.7.8-SNAPSHOT'
+}
+
 jacocoTestReport {
   group = 'Coverage reports'
   description = 'Generates a test coverage report for a project'

gradle/dependencies.gradle

@@ -47,7 +47,7 @@ ext {
     jcache_tck: '1.0.1',
     jctools: '1.2.1',
     junit: '4.12',
-    mockito: '2.0.100-beta',
+    mockito: '2.0.106-beta',
     pax_exam: '4.9.1',
     testng: '6.9.12',
     truth: '0.24',
@@ -64,7 +64,7 @@ ext {
     java_object_layout: '0.5',
     koloboke: '0.6.8',
     slf4j: '1.7.21',
-    tcache: '0.9.4',
+    tcache: '0.9.5',
   ]
   plugin_versions = [
     checkstyle: '7.1',

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.0-rc-2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.0-bin.zip

guava/build.gradle

@@ -28,6 +28,23 @@ tasks.withType(Javadoc) {
 }
 
 test {
+  useJUnit {
+    excludeCategories 'com.github.benmanes.caffeine.guava.OSGiTests'
+  }
+}
+
+task osgiTests(type: Test, group: 'Cache tests', description: 'Isolated OSGi tests') {
+  enabled = !JavaVersion.current().isJava9Compatible()
+  tasks.test.dependsOn(it)
+
+  useJUnit {
+    includeCategories 'com.github.benmanes.caffeine.guava.OSGiTests'
+  }
+}
+
+tasks.withType(Test) {
+  enabled = !JavaVersion.current().isJava9Compatible()
+
   systemProperty 'guava.osgi.version', versions.guava
   systemProperty 'caffeine.osgi.jar', project(':caffeine').jar.archivePath.path
   systemProperty 'caffeine-guava.osgi.jar', project(':guava').jar.archivePath.path

guava/src/test/java/com/github/benmanes/caffeine/guava/OSGiTest.java

@@ -22,6 +22,8 @@
 import static org.ops4j.pax.exam.CoreOptions.options;
 
 import org.junit.Test;
+import org.junit.experimental.categories.Categories.IncludeCategory;
+import org.junit.experimental.categories.Category;
 import org.junit.runner.RunWith;
 import org.ops4j.pax.exam.Configuration;
 import org.ops4j.pax.exam.Option;
@@ -37,6 +39,7 @@
  * @author [email protected] (Ben Manes)
  */
 @RunWith(PaxExam.class)
+@IncludeCategory(OSGiTests.class)
 @ExamReactorStrategy(PerMethod.class)
 public final class OSGiTest {
 
@@ -50,6 +53,7 @@ public Option[] config() {
   }
 
   @Test
+  @Category(OSGiTests.class)
   public void sanity() {
     CacheLoader<Integer, Integer> loader = new CacheLoader<Integer, Integer>() {
       @Override public Integer load(Integer key) {

guava/src/test/java/com/github/benmanes/caffeine/guava/OSGiTests.java

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2016 Ben Manes. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.benmanes.caffeine.guava;
+
+/**
+ * @author [email protected] (Ben Manes)
+ */
+public interface OSGiTests {}