From 2bfdce02f1bddcea9167fdada71f3972c74c1557 Mon Sep 17 00:00:00 2001
From: Prachi Damle <prachi@cloud.com>
Date: Mon, 28 Jan 2013 15:59:10 -0800
Subject: [PATCH] Spring changes in awsapi

---
 awsapi/conf/applicationContext.xml.in         | 53 +++++++++++++++++++
 ....properties => cloud-bridge.properties.in} |  0
 ...e.properties => ec2-service.properties.in} |  0
 awsapi/pom.xml                                | 42 ++++++++++++++-
 .../cloud/bridge/service/EC2MainServlet.java  | 23 +++++++-
 awsapi/web/web.xml                            |  9 ++++
 6 files changed, 125 insertions(+), 2 deletions(-)
 create mode 100644 awsapi/conf/applicationContext.xml.in
 rename awsapi/conf/{cloud-bridge.properties => cloud-bridge.properties.in} (100%)
 rename awsapi/conf/{ec2-service.properties => ec2-service.properties.in} (100%)

diff --git a/awsapi/conf/applicationContext.xml.in b/awsapi/conf/applicationContext.xml.in
new file mode 100644
index 00000000000..0a24df214af
--- /dev/null
+++ b/awsapi/conf/applicationContext.xml.in
@@ -0,0 +1,53 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements. See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership. The ASF licenses this file
+  to you 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.
+-->
+<beans xmlns="http://www.springframework.org/schema/beans"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
+  xmlns:context="http://www.springframework.org/schema/context"
+  xmlns:tx="http://www.springframework.org/schema/tx" 
+  xmlns:aop="http://www.springframework.org/schema/aop"
+  xsi:schemaLocation="http://www.springframework.org/schema/beans
+                      http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
+                      http://www.springframework.org/schema/tx 
+                      http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
+                      http://www.springframework.org/schema/aop
+                      http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
+                      http://www.springframework.org/schema/context
+                      http://www.springframework.org/schema/context/spring-context-3.0.xsd">                     
+
+  <context:annotation-config />
+
+  <context:component-scan base-package="com.amazon, com.cloud" />
+  
+  <!--
+    @DB support
+  -->
+  <aop:config proxy-target-class="true">
+    <aop:aspect id="dbContextBuilder" ref="transactionContextBuilder">
+        <aop:pointcut id="captureAnyMethod"
+            expression="execution(* *(..))" 
+        />
+        
+        <aop:around pointcut-ref="captureAnyMethod" method="AroundAnyMethod"/> 
+    </aop:aspect>
+
+  </aop:config>
+  
+  <bean id="transactionContextBuilder" class="com.cloud.utils.db.TransactionContextBuilder" />
+
+</beans>
diff --git a/awsapi/conf/cloud-bridge.properties b/awsapi/conf/cloud-bridge.properties.in
similarity index 100%
rename from awsapi/conf/cloud-bridge.properties
rename to awsapi/conf/cloud-bridge.properties.in
diff --git a/awsapi/conf/ec2-service.properties b/awsapi/conf/ec2-service.properties.in
similarity index 100%
rename from awsapi/conf/ec2-service.properties
rename to awsapi/conf/ec2-service.properties.in
diff --git a/awsapi/pom.xml b/awsapi/pom.xml
index 3ab595211d4..52b8f8c3306 100644
--- a/awsapi/pom.xml
+++ b/awsapi/pom.xml
@@ -304,6 +304,15 @@
       </resource>
     </resources>
     <plugins>
+	  <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-war-plugin</artifactId>
+        <version>2.3</version>
+        <configuration>
+          <webXml>./web/web.xml</webXml>
+          <warSourceDirectory>./target/generated-webapp</warSourceDirectory>
+        </configuration>
+      </plugin>
       <plugin>
         <groupId>org.mortbay.jetty</groupId>
         <artifactId>maven-jetty-plugin</artifactId>
@@ -319,7 +328,38 @@
           <webXml>${basedir}/web/web.xml</webXml>
           <webAppSourceDirectory>${basedir}/target/cloud-awsapi-${project.version}</webAppSourceDirectory>
         </configuration>
-      </plugin>      
+      </plugin>
+      <plugin>
+        <artifactId>maven-antrun-plugin</artifactId>
+        <version>1.7</version>
+        <executions>
+          <execution>
+            <id>generate-resource</id>
+            <phase>generate-resources</phase>
+            <goals>
+              <goal>run</goal>
+            </goals>
+            <configuration>
+              <target>
+                <copy
+                  todir="${basedir}/target/generated-webapp/WEB-INF/classes">
+                  <fileset dir="${basedir}/conf">
+                    <include name="*.*" />
+                  </fileset>
+				  <globmapper from="*.in" to="*" />
+                  <filterchain>
+                    <filterreader
+                      classname="org.apache.tools.ant.filters.ReplaceTokens">
+                      <param type="propertiesfile"
+                        value="${basedir}/../build/replace.properties" />
+                    </filterreader>
+                  </filterchain>
+                </copy>
+              </target>
+            </configuration>
+          </execution>
+		</executions>
+	  </plugin>
     </plugins>
     <!--
         <plugins>
diff --git a/awsapi/src/com/cloud/bridge/service/EC2MainServlet.java b/awsapi/src/com/cloud/bridge/service/EC2MainServlet.java
index f5a2d21e134..e6f1f1b3d85 100644
--- a/awsapi/src/com/cloud/bridge/service/EC2MainServlet.java
+++ b/awsapi/src/com/cloud/bridge/service/EC2MainServlet.java
@@ -17,9 +17,11 @@
 package com.cloud.bridge.service;
 
 import java.io.IOException;
+
 import java.io.OutputStreamWriter;
 import java.util.UUID;
 
+import javax.annotation.PostConstruct;
 import javax.inject.Inject;
 import javax.servlet.RequestDispatcher;
 import javax.servlet.ServletConfig;
@@ -29,10 +31,13 @@ import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
 import org.apache.log4j.Logger;
+import org.springframework.stereotype.Component;
 
 import com.cloud.bridge.persist.dao.CloudStackConfigurationDao;
 import com.cloud.bridge.util.ConfigurationHelper;
 import com.cloud.utils.db.DB;
+
+@Component("EC2MainServlet")
 @DB
 public class EC2MainServlet extends HttpServlet{
 
@@ -44,7 +49,23 @@ public class EC2MainServlet extends HttpServlet{
     private static boolean isEC2APIEnabled = false;
     public static final Logger logger = Logger.getLogger(EC2MainServlet.class);
     @Inject CloudStackConfigurationDao csDao;
-
+    static CloudStackConfigurationDao s_csDao;
+    
+    public EC2MainServlet() {
+    }
+    
+    @PostConstruct
+    void initComponent() {  
+        // Servlet injection does not always work for servlet container
+        // We use a hacking here to initialize static variables at Spring wiring time
+        if(csDao != null) {
+            s_csDao = csDao;
+        } else {
+            csDao = s_csDao;
+        }
+    }
+    
+    
     /**
      * We build the path to where the keystore holding the WS-Security X509 certificates
      * are stored.
diff --git a/awsapi/web/web.xml b/awsapi/web/web.xml
index a5b02072c3d..923a29bdfb3 100644
--- a/awsapi/web/web.xml
+++ b/awsapi/web/web.xml
@@ -22,6 +22,15 @@
 <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
 
 <web-app>
+
+	<listener>
+  	  <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
+	</listener>
+    <context-param>    
+        <param-name>contextConfigLocation</param-name>    
+        <param-value>classpath:applicationContext.xml</param-value>    
+    </context-param>
+    
     <display-name>CloudBridge</display-name>
     <servlet>
         <servlet-name>EC2MainServlet</servlet-name>