Move checkstyle configs to its own resources package.

The checkstyle config can read from the resources of a package. It can't
read from the resources of the package it is included in, though (plus
you can't use a jar as a parent, anyway).

See: http://stackoverflow.com/a/19690484/101923

.travis.yml

@@ -15,6 +15,7 @@ language: java
 jdk:
 - oraclejdk7
 - oraclejdk8
+install: cd checkstyle-config && mvn clean install && cd ..
 script: mvn clean verify && cd test && mvn clean verify
 after_success:
 - bash <(curl -s https://codecov.io/bash)

checkstyle-config/pom.xml

@@ -0,0 +1,147 @@
+<!--
+Copyright 2016 Google Inc. 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.
+-->
+<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/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>com.google.cloud.samples</groupId>
+  <artifactId>checkstyle-configuration</artifactId>
+  <version>1.0.0-SNAPSHOT</version>
+  <packaging>jar</packaging>
+
+  <name>${project.groupId}:${project.artifactId}</name>
+  <description>A common checkstyle configuration for Google Cloud samples.</description>
+  <url>https://github.com/GoogleCloudPlatform/java-repo-tools</url>
+
+  <licenses>
+    <license>
+      <name>The Apache License, Version 2.0</name>
+      <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+    </license>
+  </licenses>
+
+  <developers>
+    <developer>
+      <name>Les Vogel</name>
+      <email>lesv@google.com</email>
+      <organization>Google Inc.</organization>
+      <organizationUrl>https://cloud.google.com</organizationUrl>
+    </developer>
+    <developer>
+      <name>Tim Swast</name>
+      <email>swast@google.com</email>
+      <organization>Google Inc.</organization>
+      <organizationUrl>https://cloud.google.com</organizationUrl>
+    </developer>
+  </developers>
+
+  <scm>
+    <url>https://github.com/GoogleCloudPlatform/java-repo-tools</url>
+    <connection>scm:git:https://github.com/GoogleCloudPlatform/java-repo-tools.git</connection>
+    <developerConnection>scm:git:ssh://git@github.com/GoogleCloudPlatform/java-repo-tools.git</developerConnection>
+    <tag>v1.0.0</tag>
+  </scm>
+
+  <distributionManagement>
+    <snapshotRepository>
+      <id>ossrh</id>
+      <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+    </snapshotRepository>
+    <repository>
+      <id>ossrh</id>
+      <url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
+    </repository>
+  </distributionManagement>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+  </properties>
+
+  <prerequisites>
+    <maven>3.1.0</maven>
+  </prerequisites>
+
+  <profiles>
+    <!-- Code signing for release: http://stackoverflow.com/a/14869692/101923 -->
+    <profile>
+      <id>release</id>
+      <build>
+        <plugins>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-gpg-plugin</artifactId>
+            <version>1.6</version>
+            <executions>
+              <execution>
+                <id>sign-artifacts</id>
+                <phase>verify</phase>
+                <goals>
+                  <goal>sign</goal>
+                </goals>
+              </execution>
+            </executions>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
+  </profiles>
+
+  <build>
+    <pluginManagement>
+      <plugins>
+        <!-- Plugins for release. See: http://central.sonatype.org/pages/apache-maven.html -->
+        <plugin>
+          <groupId>org.sonatype.plugins</groupId>
+          <artifactId>nexus-staging-maven-plugin</artifactId>
+          <version>1.6.7</version>
+          <extensions>true</extensions>
+          <configuration>
+            <serverId>ossrh</serverId>
+            <nexusUrl>https://oss.sonatype.org/</nexusUrl>
+            <autoReleaseAfterClose>true</autoReleaseAfterClose>
+            <stagingProfileId>2145015f0f5c04</stagingProfileId>
+          </configuration>
+        </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-release-plugin</artifactId>
+          <version>2.5.3</version>
+          <configuration>
+            <tagBase>scm:git:ssh://git@github.com/GoogleCloudPlatform/java-repo-tools.git</tagBase>
+            <tagNameFormat>v@{project.version}</tagNameFormat>
+            <useReleaseProfile>false</useReleaseProfile>
+            <releaseProfiles>release</releaseProfiles>
+            <goals>deploy</goals>
+          </configuration>
+        </plugin>
+      </plugins>
+    </pluginManagement>
+    <plugins>
+      <!-- Release (not inherited) -->
+      <plugin>
+        <groupId>org.sonatype.plugins</groupId>
+        <artifactId>nexus-staging-maven-plugin</artifactId>
+        <inherited>false</inherited>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-release-plugin</artifactId>
+        <inherited>false</inherited>
+      </plugin>
+    </plugins>
+  </build>
+</project>
+

pom.xml

@@ -167,6 +167,15 @@ limitations under the License.
           <includeTestSourceDirectory>true</includeTestSourceDirectory>
           <suppressionsLocation>suppressions.xml</suppressionsLocation>
         </configuration>
+        <dependencies>
+          <!-- Add a dependency to use bundled resources.
+               See: http://stackoverflow.com/a/19690484/101923 -->
+          <dependency>
+            <groupId>com.google.cloud.samples</groupId>
+            <artifactId>checkstyle-configuration</artifactId>
+            <version>1.0.0-SNAPSHOT</version>
+          </dependency>
+        </dependencies>
         <executions>
           <execution><goals><goal>check</goal></goals></execution>
         </executions>