public void testDBObjectThrowsAfterDowngradeToReadOnlyAccess()
{
using (hostDB db = new hostDB())
{
bladeDirectorWCF.vmSpec toDB = new bladeDirectorWCF.vmSpec(db.conn, "1.1.1.4", bladeLockType.lockAll, bladeLockType.lockAll);
db.addNode(toDB);
// Lock with write access to a field, and then downgrade to read-only access. Then, try to write to the field we
// originally locked, and expect an exception to be thrown.
using (lockableVMSpec refA = db.getVMByIP("1.1.1.4", bladeLockType.lockNone,
bladeLockType.lockVirtualHW | bladeLockType.lockOwnership))
{
refA.downgradeLocks(
bladeLockType.lockNone | bladeLockType.lockNone,
bladeLockType.lockVirtualHW | bladeLockType.lockOwnership);
// We have released the write lock, so we should be holding the read lock only.
Assert.AreEqual(bladeLockType.lockIPAddresses | bladeLockType.lockOwnership | bladeLockType.lockVirtualHW, refA.spec.permittedAccessRead);
Assert.AreEqual(bladeLockType.lockNone, refA.spec.permittedAccessWrite);
// We should not be permitted to write fields
failIfNoThrow(() => { refA.spec.friendlyName = "test data"; });
failIfNoThrow(() => { refA.spec.currentOwner = "Dave_Lister"; });
// but should be permitted to read them.
failIfThrow(() => { Debug.WriteLine(refA.spec.currentOwner); });
failIfThrow(() => { Debug.WriteLine(refA.spec.friendlyName); });
}
}
}
public void testDBObjectFlushesToDBOnLockDowngrade()
{
using (hostDB db = new hostDB())
{
bladeDirectorWCF.vmSpec toDB = new bladeDirectorWCF.vmSpec(db.conn, "1.1.1.7", bladeLockType.lockAll, bladeLockType.lockAll);
db.addNode(toDB);
ManualResetEvent canCheckRefB = new ManualResetEvent(false);
ManualResetEvent testEnded = new ManualResetEvent(false);
Thread innerThread = new Thread(() =>
{
using (lockableVMSpec refA = db.getVMByIP("1.1.1.7", bladeLockType.lockNone,
bladeLockType.lockVirtualHW | bladeLockType.lockOwnership))
{
// Set some data, and then downgrade to a read-only lock.
// The data should be flushed to the DB at that point, so we set a ManualResetEvent and the main thread
// will check that the data has indeed been flushed, by reading from the DB.
refA.spec.friendlyName = "test data";
refA.spec.currentOwner = "Dave_Lister";
refA.downgradeLocks(
bladeLockType.lockNone | bladeLockType.lockNone,
bladeLockType.lockVirtualHW | bladeLockType.lockOwnership);
Assert.AreEqual(bladeLockType.lockIPAddresses | bladeLockType.lockOwnership | bladeLockType.lockVirtualHW, refA.spec.permittedAccessRead);
Assert.AreEqual(bladeLockType.lockNone, refA.spec.permittedAccessWrite);
canCheckRefB.Set();
testEnded.WaitOne();
}
});
innerThread.Start();
canCheckRefB.WaitOne();
try
{
using (lockableVMSpec refB = db.getVMByIP("1.1.1.7",
bladeLockType.lockVirtualHW | bladeLockType.lockOwnership,
bladeLockType.lockNone))
{
Assert.AreEqual("Dave_Lister", refB.spec.currentOwner);
Assert.AreEqual("test data", refB.spec.friendlyName);
}
}
finally
{
testEnded.Set();
innerThread.Join();
}
}
}
public void testDBObjectThrowsAfterDowngradeToNoAccess()
{
using (hostDB db = new hostDB())
{
bladeDirectorWCF.vmSpec toDB = new bladeDirectorWCF.vmSpec(db.conn, "1.1.1.3", bladeLockType.lockAll, bladeLockType.lockAll);
db.addNode(toDB);
// Lock with write access to a field, and then downgrade to no access. Then, access the field we originally
// locked, and expect an exception to be thrown.
using (lockableVMSpec refA = db.getVMByIP("1.1.1.3", bladeLockType.lockNone,
bladeLockType.lockVirtualHW | bladeLockType.lockOwnership))
{
refA.downgradeLocks(
bladeLockType.lockVirtualHW | bladeLockType.lockOwnership,
bladeLockType.lockVirtualHW | bladeLockType.lockOwnership);
Assert.AreEqual(bladeLockType.lockIPAddresses, refA.spec.permittedAccessRead);
Assert.AreEqual(bladeLockType.lockNone, refA.spec.permittedAccessWrite);
failIfNoThrow(() => { refA.spec.friendlyName = "test data"; });
failIfNoThrow(() => { refA.spec.currentOwner = "Dave_Lister"; });
}
}
}
