From 254f9dad6377311b8115221c252b20726acad0c5 Mon Sep 17 00:00:00 2001
From: Christian Mollekopf <chrigi_1@fastmail.fm>
Date: Thu, 11 May 2017 17:47:54 +0200
Subject: Upgrade job that we can eventually use to upgrade the storage

---
 common/store.cpp                       | 13 ++++++++++
 common/store.h                         | 12 +++++++++
 sinksh/CMakeLists.txt                  |  1 +
 sinksh/syntax_modules/sink_upgrade.cpp | 47 ++++++++++++++++++++++++++++++++++
 4 files changed, 73 insertions(+)
 create mode 100644 sinksh/syntax_modules/sink_upgrade.cpp

diff --git a/common/store.cpp b/common/store.cpp
index d266098..0eefe69 100644
--- a/common/store.cpp
+++ b/common/store.cpp
@@ -277,6 +277,19 @@ KAsync::Job<void> Store::removeDataFromDisk(const QByteArray &identifier)
         });
 }
 
+KAsync::Job<void> Store::upgrade()
+{
+    SinkLog() << "Upgrading...";
+    return fetchAll<ApplicationDomain::SinkResource>({})
+        .template each([](const ApplicationDomain::SinkResource::Ptr &resource) -> KAsync::Job<void> {
+            SinkLog() << "Removing caches for " << resource->identifier();
+            return removeDataFromDisk(resource->identifier());
+        })
+        .then([] {
+            SinkLog() << "Upgrade complete.";
+        });
+}
+
 static KAsync::Job<void> synchronize(const QByteArray &resource, const Sink::SyncScope &scope)
 {
     SinkLog() << "Synchronizing " << resource << scope;
diff --git a/common/store.h b/common/store.h
index fae76e5..34e14df 100644
--- a/common/store.h
+++ b/common/store.h
@@ -122,6 +122,18 @@ KAsync::Job<void> SINK_EXPORT synchronize(const Sink::SyncScope &query);
  */
 KAsync::Job<void> SINK_EXPORT removeDataFromDisk(const QByteArray &resourceIdentifier);
 
+/**
+ * Run upgrade jobs.
+ *
+ * Run this to upgrade your local database to a new version.
+ * Note that this may:
+ * * take a while
+ * * remove some/all of your local caches
+ *
+ * Note: The initial implementation simply calls removeDataFromDisk for all resources.
+ */
+KAsync::Job<void> SINK_EXPORT upgrade();
+
 template <class DomainType>
 KAsync::Job<DomainType> SINK_EXPORT fetchOne(const Sink::Query &query);
 
diff --git a/sinksh/CMakeLists.txt b/sinksh/CMakeLists.txt
index 82839ab..bc487c1 100644
--- a/sinksh/CMakeLists.txt
+++ b/sinksh/CMakeLists.txt
@@ -18,6 +18,7 @@ set(sink_cli_SRCS
     syntax_modules/sink_trace.cpp
     syntax_modules/sink_inspect.cpp
     syntax_modules/sink_drop.cpp
+    syntax_modules/sink_upgrade.cpp
     sinksh_utils.cpp
     repl/repl.cpp
     repl/replStates.cpp
diff --git a/sinksh/syntax_modules/sink_upgrade.cpp b/sinksh/syntax_modules/sink_upgrade.cpp
new file mode 100644
index 0000000..c399048
--- /dev/null
+++ b/sinksh/syntax_modules/sink_upgrade.cpp
@@ -0,0 +1,47 @@
+/*
+ *   Copyright (C) 2017 Christian Mollekopf <mollekopf@kolabsys.com>
+ *
+ *   This program 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 2 of the License, or
+ *   (at your option) 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, write to the
+ *   Free Software Foundation, Inc.,
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
+ */
+
+#include <QDebug>
+#include <QObject> // tr()
+#include <QTimer>
+
+#include "common/store.h"
+
+#include "state.h"
+#include "syntaxtree.h"
+
+namespace SinkUpgrade
+{
+
+bool upgrade(const QStringList &args, State &state)
+{
+    state.print(QObject::tr("Upgrading..."));
+    Sink::Store::upgrade().exec().waitForFinished();
+    state.printLine(QObject::tr("done"));
+    return true;
+}
+
+Syntax::List syntax()
+{
+    return Syntax::List() << Syntax{"upgrade", QObject::tr("Upgrades your storage to the latest version (be careful!)"), &SinkUpgrade::upgrade, Syntax::NotInteractive};
+}
+
+REGISTER_SYNTAX(SinkUpgrade)
+
+}
-- 
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