From 387339db449c4f1984e0af1fe8d14ee9d9479db5 Mon Sep 17 00:00:00 2001
From: Volker Krause <vkrause@kde.org>
Date: Fri, 15 Jan 2010 15:19:02 +0000
Subject: [PATCH] Run the migrator if needed.

svn path=/branches/work/akonadi-ports/kdepim/; revision=1075120
---
 kmkernel.cpp | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/kmkernel.cpp b/kmkernel.cpp
index 27a3c79d9..89badac1a 100644
--- a/kmkernel.cpp
+++ b/kmkernel.cpp
@@ -60,6 +60,7 @@ using KMail::TemplateParser;
 #include <kdebug.h>
 #include <kio/jobuidelegate.h>
 #include <kio/netaccess.h>
+#include <kprocess.h>
 
 #include <kmime/kmime_message.h>
 #include <kmime/kmime_util.h>
@@ -109,6 +110,37 @@ KMKernel::KMKernel (QObject *parent, const char *name) :
   mIdentityManager(0), mConfigureDialog(0), mMailService(0),
   mContextMenuShown( false )
 {
+  // Akonadi migration
+  KConfig config( "kmail-migratorrc" );
+  KConfigGroup migrationCfg( &config, "Migration" );
+  const bool enabled = migrationCfg.readEntry( "Enabled", false );
+  const int currentVersion = migrationCfg.readEntry( "Version", 0 );
+  const int targetVersion = migrationCfg.readEntry( "TargetVersion", 1 );
+  if ( enabled && currentVersion < targetVersion ) {
+    kDebug() << "Performing Akonadi migration. Good luck!";
+    KProcess proc;
+    QStringList args = QStringList() << "--interactive-on-change";
+    proc.setProgram( "kmail-migrator", args );
+    proc.start();
+    bool result = proc.waitForStarted();
+    if ( result ) {
+      result = proc.waitForFinished();
+    }
+    if ( result && proc.exitCode() == 0 ) {
+      kDebug() << "Akonadi migration has been successful";
+      migrationCfg.writeEntry( "Version", targetVersion );
+      migrationCfg.sync();
+    } else {
+      // exit code 1 means it is already running, so we are probably called by a migrator instance
+      kError() << "Akonadi migration failed!";
+      kError() << "command was: " << proc.program();
+      kError() << "exit code: " << proc.exitCode();
+      kError() << "stdout: " << proc.readAllStandardOutput();
+      kError() << "stderr: " << proc.readAllStandardError();
+      exit( 42 );
+    }
+  }
+
 #ifdef __GNUC__
 #warning Remove before the 4.5 release
 #endif