Generate javadoc for gerrit extension and plugin API

To make the consumption of the gerrit extension and plugin API easier
for plugin developers gerrit-extension-api.jar and
gerrit-plugin-api.jar should be published to Maven central. For this
having javadocs generated is required.

Change-Id: Ibb13fbb61c94c76fe6e2f7041d5a1e269d39d788
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>

gerrit-extension-api/pom.xml

@@ -81,6 +81,49 @@ limitations under the License.
           </execution>
         </executions>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-dependency-plugin</artifactId>
+          <executions>
+            <execution>
+              <id>unpack-artifact-sources</id>
+              <phase>generate-resources</phase>
+              <goals>
+                <goal>unpack</goal>
+              </goals>
+              <configuration>
+                <artifactItems>
+                  <artifactItem>
+                    <groupId>${project.groupId}</groupId>
+                    <artifactId>gerrit-extension-api</artifactId>
+                    <version>${project.version}</version>
+                    <classifier>all-sources</classifier>
+                    <overWrite>true</overWrite>
+                  </artifactItem>
+               </artifactItems>
+             <outputDirectory>${project.build.directory}/unpack_sources</outputDirectory>
+           </configuration>
+         </execution>
+       </executions>
+     </plugin>
+     <plugin>
+       <groupId>org.apache.maven.plugins</groupId>
+       <artifactId>maven-javadoc-plugin</artifactId>
+       <configuration>
+         <sourcepath>${project.build.directory}/unpack_sources</sourcepath>
+         <encoding>ISO-8859-1</encoding>
+         <quiet>true</quiet>
+         <detectOfflineLinks>false</detectOfflineLinks>
+       </configuration>
+       <executions>
+         <execution>
+           <goals>
+             <goal>jar</goal>
+           </goals>
+           <phase>process-resources</phase>
+         </execution>
+       </executions>
+      </plugin>
     </plugins>
   </build>
 </project>

gerrit-plugin-api/pom.xml

@@ -117,6 +117,50 @@ limitations under the License.
           </execution>
         </executions>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-dependency-plugin</artifactId>
+          <executions>
+            <execution>
+              <id>unpack-artifact-sources</id>
+              <phase>generate-resources</phase>
+              <goals>
+                <goal>unpack</goal>
+              </goals>
+              <configuration>
+                <artifactItems>
+                  <artifactItem>
+                    <groupId>${project.groupId}</groupId>
+                    <artifactId>gerrit-plugin-api</artifactId>
+                    <version>${project.version}</version>
+                    <classifier>sources</classifier>
+                    <overWrite>true</overWrite>
+                  </artifactItem>
+               </artifactItems>
+             <outputDirectory>${project.build.directory}/unpack_sources</outputDirectory>
+           </configuration>
+         </execution>
+       </executions>
+     </plugin>
+     <plugin>
+       <groupId>org.apache.maven.plugins</groupId>
+       <artifactId>maven-javadoc-plugin</artifactId>
+       <version>2.7</version>
+       <configuration>
+         <sourcepath>${project.build.directory}/unpack_sources</sourcepath>
+         <encoding>ISO-8859-1</encoding>
+         <quiet>true</quiet>
+         <detectOfflineLinks>false</detectOfflineLinks>
+       </configuration>
+       <executions>
+         <execution>
+           <goals>
+             <goal>jar</goal>
+           </goals>
+           <phase>process-resources</phase>
+         </execution>
+       </executions>
+      </plugin>
     </plugins>
   </build>
 </project>

pom.xml

@@ -355,6 +355,12 @@ limitations under the License.
           <version>2.1.2</version>
         </plugin>
 
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-javadoc-plugin</artifactId>
+         <version>2.9.1</version>
+        </plugin>
+
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-shade-plugin</artifactId>

tools/deploy_api.sh

@@ -38,6 +38,16 @@ mvn deploy:deploy-file \
   -DrepositoryId=gerrit-api-repository \
   -Durl=$URL
 
+mvn deploy:deploy-file \
+  -DgroupId=com.google.gerrit \
+  -DartifactId=gerrit-extension-api \
+  -Dversion=$VER \
+  -Dpackaging=jar \
+  -Dfile=gerrit-extension-api/target/gerrit-extension-api-$VER-javadoc.jar \
+  -Djava-source=false \
+  -DrepositoryId=gerrit-api-repository \
+  -Durl=$URL
+
 
 echo "Deploying $type gerrit-plugin-api $VER"
 mvn deploy:deploy-file \
@@ -58,3 +68,14 @@ mvn deploy:deploy-file \
   -Djava-source=false \
   -DrepositoryId=gerrit-api-repository \
   -Durl=$URL
+
+mvn deploy:deploy-file \
+  -DgroupId=com.google.gerrit \
+  -DartifactId=gerrit-plugin-api \
+  -Dversion=$VER \
+  -Dpackaging=jar \
+  -Dfile=gerrit-plugin-api/target/gerrit-plugin-api-$VER-javadoc.jar \
+  -Djava-source=false \
+  -DrepositoryId=gerrit-api-repository \
+  -Durl=$URL
+