public BandDataAggregator(Band band)
{
this.band = band;
}
private void BalanceBand(Band band, double totalDatabaseWeight, BandData[] bandData)
{
this.logger.Log(MigrationEventType.Information, "Balancing band '{0}' with '{1}' data entries.", new object[]
{
band,
bandData.Count <BandData>()
});
double moveUnitsPerWeight = (double)bandData.Sum((BandData data) => data.TotalWeight) / totalDatabaseWeight;
double num = (band.Profile == Band.BandProfile.SizeBased) ? band.MailboxSizeWeightFactor : 0.0;
double deviation = (double)this.settings.WeightDeviationPercent / 100.0;
ByteQuantifiedSize byteQuantifiedSize = ByteQuantifiedSize.FromGB((ulong)this.settings.MaximumAmountOfDataPerRoundGb);
this.logger.Log(MigrationEventType.Verbose, "Moving with a deviation of '{0}', a minimum delta of '{1}' and a maximum of '{2}' per database.", new object[]
{
deviation,
num,
byteQuantifiedSize
});
List <BandData> list = (from data in bandData
orderby this.GetBandDelta(moveUnitsPerWeight, deviation, data) descending
select data).ToList <BandData>();
foreach (BandData bandData2 in list)
{
double num2 = this.GetBandDelta(moveUnitsPerWeight, deviation, bandData2);
this.logger.Log(MigrationEventType.Verbose, "Attempting to balance band {0} for database {1}, current delta is {2}.", new object[]
{
band,
bandData2.Database,
num2
});
LoadMetric instance = PhysicalSize.Instance;
if (num2 <= num)
{
this.logger.Log(MigrationEventType.Information, "Not balancing band {0} for database {1} because delta {2} is either less than the minimum of {3} or database has no more available space ({4}). We're done.", new object[]
{
band,
bandData2.Database,
num2,
num,
bandData2.Database.AvailableCapacity.GetSizeMetric(instance)
});
break;
}
foreach (BandData bandData3 in from data in bandData
orderby data.TotalWeight
select data)
{
if (!bandData3.Database.CanAcceptBalancingLoad)
{
this.logger.Log(MigrationEventType.Verbose, "Database {0} can not be used as target because it can't take LB load.", new object[]
{
bandData3.Database
});
}
else
{
double num3 = this.GetBandDelta(moveUnitsPerWeight, 0.0 - deviation, bandData3);
this.logger.Log(MigrationEventType.Verbose, "Trying to place weight into {0} (current delta: {1}).", new object[]
{
bandData3.Database,
num3
});
ByteQuantifiedSize sizeMetric = bandData3.Database.AvailableCapacity.GetSizeMetric(instance);
if (0.0 - num3 > sizeMetric.ToMB())
{
this.logger.Log(MigrationEventType.Verbose, "Target delta of {0} is larger than the {1} available space in the database, adjusting.", new object[]
{
num3,
sizeMetric
});
num3 = 0.0 - sizeMetric.ToMB();
this.logger.Log(MigrationEventType.Verbose, "New target delta is {0}.", new object[]
{
num3
});
}
if (num3 >= 0.0)
{
this.logger.Log(MigrationEventType.Verbose, "Target database is above the threshold, skipping as a target.", new object[0]);
}
else
{
ByteQuantifiedSize sizeMetric2 = bandData3.Database.CommittedLoad.GetSizeMetric(instance);
ByteQuantifiedSize byteQuantifiedSize2;
if (sizeMetric2 > byteQuantifiedSize)
{
byteQuantifiedSize2 = ByteQuantifiedSize.Zero;
}
else
{
byteQuantifiedSize2 = byteQuantifiedSize - sizeMetric2;
}
int num4 = (int)Math.Floor(byteQuantifiedSize2.ToMB() / band.MailboxSizeWeightFactor);
if (num4 <= 0)
{
this.logger.Log(MigrationEventType.Verbose, "Target database committed load is {0} which is over the limit of {1}, skipping as a target.", new object[]
{
sizeMetric2,
byteQuantifiedSize
});
}
else
{
int num5 = (int)Math.Min(Math.Round(Math.Min(Math.Abs(num2), Math.Abs(num3))), (double)num4);
this.logger.Log(MigrationEventType.Verbose, "Projected to move {0} units out of {1} and into {2}", new object[]
{
num5,
bandData2.Database,
bandData3.Database
});
if (num5 > 0)
{
ByteQuantifiedSize value = ByteQuantifiedSize.FromMB((ulong)((double)num5 * band.MailboxSizeWeightFactor));
LoadMetricStorage loadMetricStorage = new LoadMetricStorage();
loadMetricStorage[band] = (long)num5;
BandMailboxRebalanceData item = new BandMailboxRebalanceData(bandData2.Database, bandData3.Database, loadMetricStorage);
bandData3.TotalWeight += num5;
LoadMetricStorage committedLoad;
LoadMetric metric;
(committedLoad = bandData3.Database.CommittedLoad)[metric = instance] = committedLoad[metric] + (long)value.ToBytes();
this.totalDataSelectedToMove += value;
bandData2.TotalWeight -= num5;
this.results.Add(item);
num2 -= (double)num5;
}
if (num2 <= num)
{
break;
}
}
}
}
}
}
}
private AnchorXmlSerializableObject <PersistedBandDefinition> GetBandPersistedMessage(Band band)
{
AnchorXmlSerializableObject <PersistedBandDefinition> anchorXmlSerializableObject = this.GetBandDefinitionXmlSerializable().FirstOrDefault((AnchorXmlSerializableObject <PersistedBandDefinition> persisted) => persisted.PersistedObject.Matches(band));
if (anchorXmlSerializableObject == null)
{
throw new BandDefinitionNotFoundException(band.ToString());
}
return(anchorXmlSerializableObject);
}
protected bool Equals(Band other)
{
return(this.MaxSize.Equals(other.MaxSize) && this.MinSize.Equals(other.MinSize) && this.Profile == other.Profile && Math.Abs(this.MailboxSizeWeightFactor - other.MailboxSizeWeightFactor) < 0.5 && this.IncludeOnlyPhysicalMailboxes == other.IncludeOnlyPhysicalMailboxes && object.Equals(this.MaxLastLogonAge, other.MaxLastLogonAge) && object.Equals(this.MinLastLogonAge, other.MinLastLogonAge));
}
public bool IsOverlap(Band band)
{
return(!(this.MaxSize <= band.MinSize) && !(this.MinSize >= band.MaxSize) && !(this.MaxLastLogonAge <= band.MinLastLogonAge) && !(this.MinLastLogonAge >= band.MaxLastLogonAge));
}
public Band(Band.BandProfile bandProfile, ulong minSizeMb, ulong maxSizeMb, double mailboxSizeWeightFactor, bool includeOnlyPhysicalMailboxes = false, TimeSpan?minLastLogonAge = null, TimeSpan?maxLastLogonAge = null) : base(Band.CreateBandName(bandProfile, minSizeMb, maxSizeMb, minLastLogonAge, maxLastLogonAge), true)
{
this.IncludeOnlyPhysicalMailboxes = includeOnlyPhysicalMailboxes;
this.Profile = bandProfile;
this.MailboxSizeWeightFactor = mailboxSizeWeightFactor;
this.MaxSize = ByteQuantifiedSize.FromMB(maxSizeMb);
this.MinSize = ByteQuantifiedSize.FromMB(minSizeMb);
this.MinLastLogonAge = minLastLogonAge;
this.MaxLastLogonAge = maxLastLogonAge;
}
