public override snapshot createSnapshot(string dataset, string snapshotName)
{
snapshot newVal = uncachedNAS.createSnapshot(dataset, snapshotName);
snapshots.TryAdd(newVal.id, newVal);
return(newVal);
}
public override void rollbackSnapshot(snapshot shotToRestore)
{
lock (events)
{
events.Add(new mockedCall("rollbackSnapshot", "shotToRestore: '" + shotToRestore));
}
}
public override void deleteSnapshot(snapshot toDelete)
{
uncachedNAS.deleteSnapshot(toDelete);
snapshot foo;
snapshots.TryRemove(toDelete.id, out foo);
}
private static snapshot getSnapshot(NASAccess nas, string snapshotFullName)
{
snapshot shotToRestore = nas.getSnapshots().SingleOrDefault(
x => x.fullname.ToLower().Contains("/" + snapshotFullName.ToLower() + "@") || x.id == snapshotFullName);
return(shotToRestore);
}
public override void deleteSnapshot(snapshot toDelete)
{
string name = Uri.EscapeDataString(toDelete.fullname);
string url = "http://" + _serverIp + "/api/v1.0/storage/snapshot/" + name;
doReq(url, "DELETE", HttpStatusCode.NoContent);
}
public override void rollbackSnapshot(snapshot shotToRestore) //, volume parentVolume, volume clone)
{
lock (nonAPIReqLock)
{
// Oh no, FreeNAS doesn't export the 'rollback' command via the API! :( We need to log into the web UI and faff with
// that in order to rollback instead.
//
// First, do an initial GET to / so we can get a CSRF token and some cookies.
DoNonAPIReq("", HttpStatusCode.OK);
//doInitialReq();
// Now we can perform the login.
string url = "account/login/";
string payloadStr = string.Format("username={0}&password={1}", _username, _password);
DoNonAPIReq(url, HttpStatusCode.OK, payloadStr);
// Now we can do the request to rollback the snapshot.
string resp = DoNonAPIReq("storage/snapshot/rollback/" + shotToRestore.fullname + "/", HttpStatusCode.OK,
"");
if (resp.Contains("\"error\": true") || !resp.Contains("Rollback successful."))
{
throw new nasAccessException("Rollback failed: " + resp);
}
}
}
public override void cloneSnapshot(snapshot toClone, string fullCloneName)
{
lock (events)
{
events.Add(new mockedCall("cloneSnapshot", "toClone: '" + toClone + "' fullCloneName: " + fullCloneName));
}
}
private static snapshotObjects getSnapshotObjectsFromNAS(NASAccess nas, string snapshotFullName)
{
snapshot shotToRestore = getSnapshot(nas, snapshotFullName);
if (shotToRestore == null)
{
nas.invalidateSnapshots();
shotToRestore = getSnapshot(nas, snapshotFullName);
if (shotToRestore == null)
{
throw new Exception("Cannot find snapshot " + snapshotFullName);
}
}
// Now find the extent. We'll need to delete it before we can rollback the snapshot.
iscsiExtent extent = getExtent(nas, snapshotFullName);
if (extent == null)
{
nas.invalidateExtents();
extent = getExtent(nas, snapshotFullName);
if (extent == null)
{
throw new Exception("Cannot find extent " + snapshotFullName);
}
}
// Find the 'target to extent' mapping, since this will need to be deleted before we can delete the extent.
iscsiTargetToExtentMapping tgtToExtent = getTgtToExtent(nas, extent);
if (tgtToExtent == null)
{
nas.invalidateTargetToExtents();
tgtToExtent = getTgtToExtent(nas, extent);
if (tgtToExtent == null)
{
throw new Exception("Cannot find target-to-extent mapping with ID " + extent.id + " for snapshot " + shotToRestore.name);
}
}
// We find the target, as well, just to be sure that our cache is correct.
if (nas.getISCSITargets().Count(x => x.id == tgtToExtent.iscsi_target) == 0)
{
nas.invalidateTargets();
if (nas.getISCSITargets().Count(x => x.id == tgtToExtent.iscsi_target) == 0)
{
throw new Exception("Cannot find target for snapshot " + snapshotFullName);
}
}
return(new snapshotObjects()
{
extent = extent,
shotToRestore = shotToRestore,
tgtToExtent = tgtToExtent
});
}
public override void cloneSnapshot(snapshot snapshot, string path)
{
string url = String.Format("http://{0}/api/v1.0/storage/snapshot/{1}/clone/", _serverIp, snapshot.fullname);
string payload = String.Format("{{\"name\": \"{0}\" }}", path);
doReq(url, "POST", HttpStatusCode.Accepted, payload);
// This API function returns a HTTP status of Accepted (202), which should indicate that the operation has been started
// and will continue async. However, after studying the FreeNAS code ("FreeNAS-9.10.1 (d989edd)"), there appears to be
// a shell out to 'zfs clone', which is sync. AFAICT, the call can never return before the clone is complete.
}
public override void deleteSnapshot(snapshot toDelete)
{
lock (events)
{
events.Add(new mockedCall("deleteSnapshot", "toDelete: " + toDelete));
}
lock (snapshots)
{
snapshots.Remove(toDelete.id);
}
}
public void addSnapshot(snapshot baseSnapshot)
{
lock (events)
{
events.Add(new mockedCall("addSnapshot", "baseSnapshot: '" + baseSnapshot + "'"));
}
lock (snapshots)
{
snapshots.Add(baseSnapshot.id, baseSnapshot);
}
}
public override void rollbackSnapshot(snapshot shotToRestore)
{
snapshotsLock.EnterWriteLock();
try
{
uncachedNAS.getSnapshots().Clear();
uncachedNAS.getSnapshots().ForEach(x => snapshots.TryAdd(x.id, x));
}
catch (Exception)
{
snapshots.Clear();
throw;
}
finally
{
snapshotsLock.ExitWriteLock();
}
}
public override snapshot createSnapshot(string dataset, string snapshotName)
{
lock (events)
{
events.Add(new mockedCall("createSnapshot", "dataset: '" + dataset + "' snapshotName: " + snapshotName));
}
lock (snapshots)
{
string newID = idGen.Next().ToString();
snapshot newShot = new snapshot()
{
fullname = "/dev/foo/bar/" + snapshotName,
id = newID,
name = snapshotName,
filesystem = dataset
};
snapshots.Add(newID, newShot);
return(snapshots[newID]);
}
}
public override void cloneSnapshot(snapshot toClone, string fullCloneName)
{
uncachedNAS.cloneSnapshot(toClone, fullCloneName);
}
public abstract void rollbackSnapshot(snapshot shotToRestore);
public abstract void cloneSnapshot(snapshot toClone, string fullCloneName);
public abstract void deleteSnapshot(snapshot toDelete);
