//XXXIS add more things if we need them?
public EssesFlowCacheContext(Flow flow, UInt64 cacheSizeAllocated, CacheWritePolicy writePolicy, CacheWriteBuffer cacheWrites, string cacheCurvePointsFile, string tenantID)
{
Flow = flow;
this.cacheSizeAllocated = cacheSizeAllocated;
this.writePolicy = writePolicy;
this.cacheWrites = cacheWrites;
this.hitRate = 0.0F;
this.tenantID = tenantID;
this.demandPointsSerializationFile = cacheCurvePointsFile;
if (File.Exists(this.demandPointsSerializationFile))
{
readInCacheCurve();
this.useSerializedCurve = true;
}
else
{
this.cacheDemandCurvePoints = null;
this.cacheDemandFunc = null;
this.useSerializedCurve = false;
}
#if COLLECT_CACHE_CURVE
Console.CancelKeyPress += new ConsoleCancelEventHandler(Controller_CancelKeyPress);
#endif
}
//XXXIS add more things if we need them?
public EssesFlowCacheContext(Flow flow, UInt64 cacheSizeAllocated, CacheWritePolicy writePolicy, CacheWriteBuffer cacheWrites, string cacheCurvePointsFile, string tenantID)
{
Flow = flow;
this.cacheSizeAllocated = cacheSizeAllocated;
this.writePolicy = writePolicy;
this.cacheWrites = cacheWrites;
this.hitRate = 0.0F;
this.tenantID = tenantID;
this.demandPointsSerializationFile = cacheCurvePointsFile;
if (File.Exists(this.demandPointsSerializationFile))
{
readInCacheCurve();
this.useSerializedCurve = true;
}
else
{
this.cacheDemandCurvePoints = null;
this.cacheDemandFunc = null;
this.useSerializedCurve = false;
}
#if COLLECT_CACHE_CURVE
Console.CancelKeyPress += new ConsoleCancelEventHandler(Controller_CancelKeyPress);
#endif
}
/// <summary>
/// Sets the cache write policy
/// </summary>
/// <param name="policy"></param>
public void SetCacheWritePolicy(CacheWritePolicy policy)
{
this.writePolicy = policy;
}
public OktofsPolicyEsses(string configFileName, string topConfigName, int slavePort)
{
shutdownEvent = new ManualResetEvent(false);
//
// initialize rate controller
// parsing the config file defines VM placement and VM ordering within a traffic matrix
//
Random random = new Random();
uint TenantId = (uint)random.Next(1, int.MaxValue); // min P of collision at slaves.
rateController = new OktofsRateController(this, TenantId, slavePort);
InitBandwidthWeights(BWWeightsConfigFile); //initialize the bandwidth weights from the appropriate config file
string[] validInputRecords = new string[] { "D-VM-FILE-VOL", "CD-VM-FILE-VOL", "CH-VM-FILE-VOL", "C-VM-SHARE-VOL", "H-VM-SHARE-VOL", "CH-VM-SHARE-VOL" };
listFlows = rateController.InitListFlows(configFileName, validInputRecords);
fileCaches = new Dictionary <string, EssesFileCacheContext>();
//Initialize some controller-side context about each flow's cache and the file caches they belong to based on the input tokens stored when flows were created
foreach (Flow flow in listFlows)
{
UInt64 fileCacheSize = Convert.ToUInt64(flow.InputTokens[9]);
string flowTenantID = flow.InputTokens[12];
if (!this.fileCaches.ContainsKey(flowTenantID))
{
this.fileCaches.Add(flowTenantID, new EssesFileCacheContext(fileCacheSize));
}
this.fileCaches[flowTenantID].flows.Add(flow); //Add this flow to the context for this file cache
UInt64 flowCacheSizeAllocated = Convert.ToUInt64(flow.InputTokens[5]);
CacheWritePolicy writePolicy = 0;
CacheWriteBuffer cacheWrites = 0;
switch (flow.InputTokens[7])
{
case "write-through":
writePolicy = CacheWritePolicy.WriteThrough;
break;
}
switch (flow.InputTokens[8])
{
case "noCacheWrites":
cacheWrites = CacheWriteBuffer.noCache;
break;
case "CacheWrites":
cacheWrites = CacheWriteBuffer.Cache;
break;
}
EssesFlowCacheContext flowContext = new EssesFlowCacheContext(flow, flowCacheSizeAllocated, writePolicy, cacheWrites, flow.InputTokens[11], flowTenantID);
flow.Context = flowContext;
//flowContext.minFlowGuarantee = Convert.ToUInt64(flow.InputTokens[10]);
flowContext.guaranteedE2EBW = Convert.ToUInt64(flow.InputTokens[13]);
}
//
// ask Rate Controller to create the queues on the remote servers.
//
rateController.InstallFlows();
//
// At this point the Rate Controller is connected to the rate slaves and the
// minifilter drivers are configured with queues. The minifilters will not enforce
// rate limits until we install the RAPs, which is done in the Start() routine.
//
}
/// <summary>
/// Sets the cache write policy
/// </summary>
/// <param name="policy"></param>
public void SetCacheWritePolicy(CacheWritePolicy policy)
{
this.writePolicy = policy;
}
