Hello world plugin example

Initial commit.

Change-Id: I17cb82df2c17c5c827bfacc8c4e58322cffca1c4

pom.xml

diff --git a/pom.xml b/pom.xml
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--- /dev/null
+++ b/pom.xml
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+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+Copyright (C) 2012 The Android Open Source Project
+
+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.gerrit.plugins</groupId>
+  <artifactId>helloworld</artifactId>
+  <packaging>jar</packaging>
+  <version>0.1</version>
+  <properties>
+    <gerrit-version>2.4-rc0-136-g7bf1f93</gerrit-version>
+  </properties>
+  <name>Hello World Gerrit Plugin</name>
+  <url>https://gerrit-review.googlesource.com</url>
+
+  <description>
+    A hello world-type plugin example for Gerrit
+  </description>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <configuration>
+          <source>1.6</source>
+          <target>1.6</target>
+          <encoding>UTF-8</encoding>
+        </configuration>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-jar-plugin</artifactId>
+        <configuration>
+          <archive>
+            <manifestEntries>
+              <Gerrit-Plugin>helloworld</Gerrit-Plugin>
+              <Gerrit-SshModule>com.google.gerrit.plugins.HelloWorldCommandModule</Gerrit-SshModule>
+              <Gerrit-Version>${gerrit-version}</Gerrit-Version>
+            </manifestEntries>
+          </archive>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.google.gerrit</groupId>
+      <artifactId>gerrit-plugin-api</artifactId>
+      <version>${gerrit-version}</version>
+    </dependency>
+  </dependencies>
+
+  <repositories>
+    <repository>
+      <id>gerrit-api-repository</id>
+      <url>https://gerrit-api.commondatastorage.googleapis.com/snapshot/</url>
+    </repository>
+  </repositories>
+
+</project>

src/main/java/com/google/gerrit/plugins/HelloWorldCommandModule.java

diff --git a/src/main/java/com/google/gerrit/plugins/HelloWorldCommandModule.java b/src/main/java/com/google/gerrit/plugins/HelloWorldCommandModule.java
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+++ b/src/main/java/com/google/gerrit/plugins/HelloWorldCommandModule.java
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+// Copyright (C) 2012 The Android Open Source Project
+//
+// 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.google.gerrit.plugins;
+
+import com.google.gerrit.sshd.commands.PluginCommandModule;
+
+public class HelloWorldCommandModule extends PluginCommandModule {
+  public void configureCmds() {
+    command("print").to(PrintHelloWorldCommand.class);
+  }
+}

src/main/java/com/google/gerrit/plugins/PrintHelloWorldCommand.java

diff --git a/src/main/java/com/google/gerrit/plugins/PrintHelloWorldCommand.java b/src/main/java/com/google/gerrit/plugins/PrintHelloWorldCommand.java
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+++ b/src/main/java/com/google/gerrit/plugins/PrintHelloWorldCommand.java
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+// Copyright (C) 2012 The Android Open Source Project
+//
+// 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.google.gerrit.plugins;
+
+import com.google.gerrit.sshd.SshCommand;
+
+public final class PrintHelloWorldCommand extends SshCommand {
+  @Override
+  public void run() throws UnloggedFailure, Failure, Exception {
+    // Note the use of '\n' instead of println to keep platform-agnostic line
+    // terminator.
+    stdout.print("Hello world!\n");
+  }
+}