From 030286279cb84c6afcab6c6811c0478e99652678 Mon Sep 17 00:00:00 2001
From: abhishek <abhishek@cloud.com>
Date: Fri, 4 Feb 2011 08:52:25 -0800
Subject: [PATCH] adding a migration util

---
 .../Db22beta4to22GAMigrationUtil.java         | 129 ++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 server/src/com/cloud/migration/Db22beta4to22GAMigrationUtil.java

diff --git a/server/src/com/cloud/migration/Db22beta4to22GAMigrationUtil.java b/server/src/com/cloud/migration/Db22beta4to22GAMigrationUtil.java
new file mode 100644
index 00000000000..fb7c0bd5bd0
--- /dev/null
+++ b/server/src/com/cloud/migration/Db22beta4to22GAMigrationUtil.java
@@ -0,0 +1,129 @@
+/**
+ *  Copyright (C) 2010 Cloud.com, Inc.  All rights reserved.
+ * 
+ * This software is licensed under the GNU General Public License v3 or later.
+ * 
+ * It is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+package com.cloud.migration;
+
+import java.io.File;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
+import org.apache.log4j.xml.DOMConfigurator;
+
+import com.cloud.utils.PropertiesUtil;
+import com.cloud.utils.db.DB;
+import com.cloud.utils.db.Transaction;
+import com.cloud.utils.exception.CloudRuntimeException;
+
+@DB(txn=false)
+public class Db22beta4to22GAMigrationUtil {
+        
+    private Map<Long,Long> pfRuleIdToIpAddressIdMap = new HashMap<Long, Long>();
+    private final String FindPfIdToPublicIpId = "SELECT id,ip_address_id from firewall_rules where is_static_nat=1";
+    private final String FindVmIdPerPfRule = "SELECT instance_id from port_forwarding_rules where id = ?";
+    private final String WriteVmIdToIpAddrTable = "UPDATE user_ip_address set vm_id = ? where id = ?";
+    protected Db22beta4to22GAMigrationUtil() {
+    }
+    
+    @DB
+    //This method gets us a map of pf/firewall id <-> ip address id
+    //Using the keyset, we will iterate over the pf table to find corresponding vm id
+    //When we get the vm id, we will use the val for each key to update the corresponding ip addr row with the vm id
+    public void populateMap(){
+        Long key = null;
+        Long val = null;
+        
+        Transaction txn = Transaction.open(Transaction.CLOUD_DB);
+        
+        StringBuilder sql = new StringBuilder(FindPfIdToPublicIpId);
+
+        PreparedStatement pstmt = null;
+        try {
+            pstmt = txn.prepareAutoCloseStatement(sql.toString());
+
+            ResultSet rs = pstmt.executeQuery();
+            while (rs.next()) {
+                key = rs.getLong("id");
+                val = rs.getLong("ip_address_id");
+                pfRuleIdToIpAddressIdMap.put(key, val);
+            }           
+
+        } catch (SQLException e) {
+            throw new CloudRuntimeException("Unable to execute " + pstmt.toString(), e);
+        }
+
+    }
+    
+    @DB
+    public void updateVmIdForIpAddresses(){
+        Transaction txn = Transaction.open(Transaction.CLOUD_DB);
+        Set<Long> pfIds = pfRuleIdToIpAddressIdMap.keySet();
+        StringBuilder sql = new StringBuilder(FindVmIdPerPfRule);
+        Long vmId = null;
+        Long ipAddressId = null;
+        PreparedStatement pstmt = null;
+        for(Long pfId : pfIds){
+            try {
+                pstmt = txn.prepareAutoCloseStatement(sql.toString());
+                pstmt.setLong(1, pfId);
+                ResultSet rs = pstmt.executeQuery();
+                while(rs.next()) {
+                    vmId = rs.getLong("instance_id");
+                }
+                ipAddressId = pfRuleIdToIpAddressIdMap.get(pfId);
+                finallyUpdate(ipAddressId, vmId, txn);
+            } catch (SQLException e) {
+                throw new CloudRuntimeException("Unable to execute " + pstmt.toString(), e);
+            }
+        }
+    }
+    
+    @DB
+    public void finallyUpdate(Long ipAddressId, Long vmId, Transaction txn){
+
+        StringBuilder sql = new StringBuilder(WriteVmIdToIpAddrTable);
+
+        PreparedStatement pstmt = null;
+        try {
+            pstmt = txn.prepareAutoCloseStatement(sql.toString());
+            pstmt.setLong(1, vmId);
+            pstmt.setLong(2, ipAddressId);
+            int rs = pstmt.executeUpdate();
+        } catch (SQLException e) {
+            throw new CloudRuntimeException("Unable to execute " + pstmt.toString(), e);
+        }
+    }
+    
+    public static void main(String[] args) {
+
+        File file = PropertiesUtil.findConfigFile("log4j-cloud.xml");
+
+        if(file != null) {
+            System.out.println("Log4j configuration from : " + file.getAbsolutePath());
+            DOMConfigurator.configureAndWatch(file.getAbsolutePath(), 10000);
+        } else {
+            System.out.println("Configure log4j with default properties");
+        }
+        
+        Db22beta4to22GAMigrationUtil util = new Db22beta4to22GAMigrationUtil();
+        util.populateMap();
+        util.updateVmIdForIpAddresses();
+    }
+}