From 7cbf25f2f6d38efa384c7f8e0a5b2b2d274ebb00 Mon Sep 17 00:00:00 2001
From: Christian Mollekopf <chrigi_1@fastmail.fm>
Date: Sun, 30 Nov 2014 17:57:31 +0100
Subject: Moved buffertest to store/test and turned it into a reproducible
 benchmark.

---
 store/test/storagebenchmark.cpp | 132 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 store/test/storagebenchmark.cpp

(limited to 'store/test/storagebenchmark.cpp')

diff --git a/store/test/storagebenchmark.cpp b/store/test/storagebenchmark.cpp
new file mode 100644
index 0000000..939ae0b
--- /dev/null
+++ b/store/test/storagebenchmark.cpp
@@ -0,0 +1,132 @@
+#include <QtTest>
+
+#include "calendar_generated.h"
+#include <iostream>
+#include <fstream>
+#include <QDir>
+#include <QString>
+#include <QTime>
+#include <qdebug.h>
+
+#include "store/database.h"
+
+using namespace Calendar;
+using namespace flatbuffers;
+
+static std::string createEvent()
+{
+    FlatBufferBuilder fbb;
+    {
+        auto summary = fbb.CreateString("summary");
+
+        const int attachmentSize = 1024*2; // 2KB
+        int8_t rawData[attachmentSize];
+        auto data = fbb.CreateVector(rawData, attachmentSize);
+
+        Calendar::EventBuilder eventBuilder(fbb);
+        eventBuilder.add_summary(summary);
+        eventBuilder.add_attachment(data);
+        auto eventLocation = eventBuilder.Finish();
+        FinishEventBuffer(fbb, eventLocation);
+    }
+    return std::string(reinterpret_cast<const char *>(fbb.GetBufferPointer()), fbb.GetSize());
+}
+
+static void readEvent(const std::string &data)
+{
+    auto readEvent = GetEvent(data.c_str());
+    std::cout << readEvent->summary()->c_str() << std::endl;
+}
+
+class StorageBenchmark : public QObject
+{
+    Q_OBJECT
+private:
+    //This should point to a directory on disk and not a ramdisk (since we're measuring performance)
+    QString testDataPath;
+    QString dbPath;
+    QString filePath;
+
+private Q_SLOTS:
+    void initTestCase()
+    {
+        testDataPath = "./";
+        dbPath = testDataPath + "testdb";
+        filePath = testDataPath + "buffer.fb";
+
+        QDir dir(testDataPath);
+        dir.remove("testdb/data.mdb");
+        dir.remove("testdb/lock.mdb");
+        dir.remove(filePath);
+    }
+
+    void testWriteRead_data()
+    {
+        QTest::addColumn<bool>("useDb");
+        QTest::addColumn<int>("count");
+
+        const int count = 50000;
+        QTest::newRow("db, 50k") << true << count;
+        QTest::newRow("file, 50k") << false << count;
+    }
+
+    void testWriteRead()
+    {
+        QFETCH(bool, useDb);
+        QFETCH(int, count);
+
+        Database db(dbPath);
+
+        std::ofstream myfile;
+        myfile.open(filePath.toStdString());
+
+        QTime time;
+        time.start();
+        {
+            auto transaction = db.startTransaction();
+            for (int i = 0; i < count; i++) {
+                const auto key = QString("key%1").arg(i);
+                auto event = createEvent();
+                if (useDb) {
+                    db.write(key.toStdString(), event, transaction);
+                } else {
+                    myfile << event;
+                }
+            }
+            if (useDb) {
+                db.endTransaction(transaction);
+            } else {
+                myfile.close();
+            }
+        }
+        const int writeDuration = time.elapsed();
+        qDebug() << "Writing took[ms]: " << writeDuration;
+
+        time.start();
+        {
+            for (int i = 0; i < count; i++) {
+                const auto key = QString("key%1").arg(i);
+                if (useDb) {
+                    db.read(key.toStdString());
+                }
+            }
+        }
+        const int readDuration = time.elapsed();
+        if (useDb) {
+            qDebug() << "Reading took[ms]: " << readDuration;
+        } else {
+            qDebug() << "File reading is not implemented.";
+        }
+    }
+
+    void testSizes()
+    {
+        QFileInfo dbInfo(dbPath, "data.mdb");
+        QFileInfo fileInfo(filePath);
+        qDebug() << "Database size [kb]: " << dbInfo.size()/1024;
+        qDebug() << "File size [kb]: " << fileInfo.size()/1024;
+    }
+};
+
+QTEST_MAIN(StorageBenchmark)
+#include "storagebenchmark.moc"
-- 
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