private void ZExists(int pMessageCount, cTrace.cContext pParentContext)
{
var lContext = pParentContext.NewMethod(nameof(cSelectedMailboxCache), nameof(ZExists), pMessageCount);
if (pMessageCount < mItems.Count)
{
throw new cUnexpectedServerActionException(0, "count should only go up", lContext);
}
int lToAdd = pMessageCount - mItems.Count;
cMessageHandleList lMessageHandles = new cMessageHandleList();
for (int i = 0; i < lToAdd; i++)
{
cItem lItem = new cItem(this, mCacheSequence++);
mItems.Add(lItem);
lMessageHandles.Add(lItem);
}
mUIDNextUnknownCount += lToAdd;
mUnseenUnknownCount += lToAdd;
mSynchroniser.InvokeMailboxMessageDelivery(mMailboxCacheItem, lMessageHandles, lContext);
ZSetMailboxStatus(lContext);
}
internal static cMessageHandleList FromMessages(IEnumerable <cMessage> pMessages)
{
if (pMessages == null)
{
throw new ArgumentNullException(nameof(pMessages));
}
object lMessageCache = null;
cMessageHandleList lMessageHandles = new cMessageHandleList();
foreach (var lMessage in pMessages)
{
if (lMessage == null)
{
throw new ArgumentOutOfRangeException(nameof(pMessages), "contains nulls");
}
if (lMessageCache == null)
{
lMessageCache = lMessage.MessageHandle.MessageCache;
}
else if (!ReferenceEquals(lMessage.MessageHandle.MessageCache, lMessageCache))
{
throw new ArgumentOutOfRangeException(nameof(pMessages), "contains mixed message caches");
}
lMessageHandles.Add(lMessage.MessageHandle);
}
return(new cMessageHandleList(lMessageHandles.Distinct()));
}
public cMessageHandleList SetUnseenCount(int pMessageCount, cUIntList pMSNs, cTrace.cContext pParentContext)
{
var lContext = pParentContext.NewMethod(nameof(cSelectedMailboxCache), nameof(SetUnseenCount), pMSNs);
// the message count is required because messages can be delivered during the search, after the search results are calculated
// it should be the message count that existed when the command was submitted
// corrollary: fetches may arrive during the search that set the flags after the results were calculated
// - that is why this code only changes the unseen == null entries
// (I don't have to worry about expunges, as they are not allowed during a search command)
int lMessageCount = pMessageCount;
cMessageHandleList lMessageHandles = new cMessageHandleList();
bool lSetMailboxStatus = false;
foreach (var lMSN in pMSNs)
{
int lItemIndex = (int)lMSN - 1;
if (lItemIndex >= lMessageCount)
{
lMessageCount = lItemIndex + 1;
}
var lItem = mItems[lItemIndex];
if (lItem.Unseen == null)
{
lItem.Unseen = true;
mUnseenCount++;
mUnseenUnknownCount--;
lSetMailboxStatus = true;
}
lMessageHandles.Add(lItem);
}
if (mUnseenUnknownCount > 0)
{
for (int i = 0; i < lMessageCount; i++)
{
var lItem = mItems[i];
if (lItem.Unseen == null)
{
lItem.Unseen = false;
mUnseenUnknownCount--;
lSetMailboxStatus = true;
}
}
}
if (lSetMailboxStatus)
{
ZSetMailboxStatus(lContext);
}
return(lMessageHandles);
}
internal static cMessageHandleList FromMessageHandle(iMessageHandle pMessageHandle)
{
if (pMessageHandle == null)
{
throw new ArgumentNullException(nameof(pMessageHandle));
}
var lResult = new cMessageHandleList();
lResult.Add(pMessageHandle);
return(lResult);
}
public override void CommandCompleted(cCommandResult pResult, cTrace.cContext pParentContext)
{
var lContext = pParentContext.NewMethod(nameof(cSortCommandHook), nameof(CommandCompleted), pResult);
if (pResult.ResultType != eCommandResultType.ok || mMSNs == null)
{
return;
}
cMessageHandleList lMessageHandles = new cMessageHandleList();
foreach (var lMSN in mMSNs)
{
lMessageHandles.Add(mSelectedMailbox.GetHandle(lMSN));
}
MessageHandles = lMessageHandles;
}
internal cStoreFeedback(IEnumerable <cMessage> pMessages, eStoreOperation pOperation, cStorableFlags pFlags)
{
if (pMessages == null)
{
throw new ArgumentNullException(nameof(pMessages));
}
if (pFlags == null)
{
throw new ArgumentNullException(nameof(pFlags));
}
object lMessageCache = null;
cMessageHandleList lMessageHandles = new cMessageHandleList();
foreach (var lMessage in pMessages)
{
if (lMessage == null)
{
throw new ArgumentOutOfRangeException(nameof(pMessages), "contains nulls");
}
var lMessageHandle = lMessage.MessageHandle;
if (lMessageCache == null)
{
lMessageCache = lMessageHandle.MessageCache;
}
else if (!ReferenceEquals(lMessageHandle.MessageCache, lMessageCache))
{
throw new ArgumentOutOfRangeException(nameof(pMessages), "contains mixed message caches");
}
lMessageHandles.Add(lMessageHandle);
}
mItems = new List <cStoreFeedbackItem>(from lMessageHandle in lMessageHandles.Distinct() select new cStoreFeedbackItem(lMessageHandle));
mOperation = pOperation;
mFlags = pFlags;
}
private async Task ZFetchCacheItemsAsync(cMethodControl pMC, cFetchCacheItemsGroup pGroup, cProgress pProgress, cTrace.cContext pParentContext)
{
var lContext = pParentContext.NewMethod(nameof(cSession), nameof(ZFetchCacheItemsAsync), pMC, pGroup);
if (pGroup.Items.IsEmpty)
{
// the group where we already have everything that we need
pProgress.Increment(pGroup.MessageHandles.Count, lContext);
return;
}
int lExpungedCount;
int lIndex = 0;
cUIDList lUIDs = new cUIDList();
if (pGroup.MSNHandleCount > 0)
{
// this is where we use straight fetch (not UID fetch)
//////////////////////////////////////////////////////
// sort the handles so we might get good sequence sets
pGroup.MessageHandles.SortByCacheSequence();
int lMSNHandleCount = pGroup.MSNHandleCount;
Stopwatch lStopwatch = new Stopwatch();
while (lIndex < pGroup.MessageHandles.Count && lMSNHandleCount != 0)
{
// the number of messages to fetch this time
int lFetchCount = mFetchCacheItemsSizer.Current;
// the number of UID handles we need to fetch to top up the number of handles to the limit
//
int lUIDHandleCount;
if (lFetchCount > lMSNHandleCount)
{
lUIDHandleCount = lFetchCount - lMSNHandleCount;
}
else
{
lUIDHandleCount = 0;
}
// get the handles to fetch this time
lExpungedCount = 0;
cMessageHandleList lMessageHandles = new cMessageHandleList();
while (lIndex < pGroup.MessageHandles.Count && lMessageHandles.Count < lFetchCount)
{
var lMessageHandle = pGroup.MessageHandles[lIndex++];
if (lMessageHandle.Expunged)
{
lExpungedCount++;
}
else
{
if (lMessageHandle.UID == null)
{
lMessageHandles.Add(lMessageHandle);
lMSNHandleCount--;
}
else if (lUIDHandleCount > 0)
{
lMessageHandles.Add(lMessageHandle);
lUIDHandleCount--;
}
else
{
lUIDs.Add(lMessageHandle.UID);
}
}
}
// if other fetching is occurring at the same time (retrieving UIDs) then there mightn't be any
//
if (lMessageHandles.Count > 0)
{
// fetch
lStopwatch.Restart();
await ZFetchCacheItemsAsync(pMC, lMessageHandles, pGroup.Items, lContext).ConfigureAwait(false);
lStopwatch.Stop();
// store the time taken so the next fetch is a better size
mFetchCacheItemsSizer.AddSample(lMessageHandles.Count, lStopwatch.ElapsedMilliseconds);
}
// update progress
if (lExpungedCount > 0 || lMessageHandles.Count > 0)
{
pProgress.Increment(lExpungedCount + lMessageHandles.Count, lContext);
}
}
}
lExpungedCount = 0;
while (lIndex < pGroup.MessageHandles.Count)
{
var lMessageHandle = pGroup.MessageHandles[lIndex++];
if (lMessageHandle.Expunged)
{
lExpungedCount++;
}
else
{
lUIDs.Add(lMessageHandle.UID);
}
}
if (lExpungedCount > 0)
{
pProgress.Increment(lExpungedCount, lContext);
}
if (lUIDs.Count == 0)
{
return;
}
// uid fetch the remainder
var lMailboxHandle = pGroup.MessageHandles[0].MessageCache.MailboxHandle;
await ZUIDFetchCacheItemsAsync(pMC, lMailboxHandle, lUIDs, pGroup.Items, pProgress, lContext).ConfigureAwait(false);
}
public async Task <cMessageHandleList> UIDFetchCacheItemsAsync(cMethodControl pMC, iMailboxHandle pMailboxHandle, cUIDList pUIDs, cMessageCacheItems pItems, cProgress pProgress, cTrace.cContext pParentContext)
{
var lContext = pParentContext.NewMethod(nameof(cSession), nameof(UIDFetchCacheItemsAsync), pMC, pMailboxHandle, pUIDs, pItems);
if (mDisposed)
{
throw new ObjectDisposedException(nameof(cSession));
}
if (_ConnectionState != eConnectionState.selected)
{
throw new InvalidOperationException(kInvalidOperationExceptionMessage.NotSelected);
}
if (pMailboxHandle == null)
{
throw new ArgumentNullException(nameof(pMailboxHandle));
}
if (pUIDs == null)
{
throw new ArgumentNullException(nameof(pUIDs));
}
if (pItems == null)
{
throw new ArgumentNullException(nameof(pItems));
}
if (pProgress == null)
{
throw new ArgumentNullException(nameof(pProgress));
}
if (pUIDs.Count == 0)
{
throw new ArgumentOutOfRangeException(nameof(pUIDs));
}
if (pItems.IsEmpty)
{
throw new ArgumentOutOfRangeException(nameof(pItems));
}
uint lUIDValidity = pUIDs[0].UIDValidity;
mMailboxCache.CheckIsSelectedMailbox(pMailboxHandle, lUIDValidity); // to be repeated inside the select lock
// split the list into those messages I have handles for and those I dont
/////////////////////////////////////////////////////////////////////////
cMessageHandleList lMessageHandles = new cMessageHandleList();
cUIDList lUIDs = new cUIDList();
// check the selected mailbox and resolve uids -> handles whilst blocking select exclusive access
//
using (var lBlock = await mSelectExclusiveAccess.GetBlockAsync(pMC, lContext).ConfigureAwait(false))
{
cSelectedMailbox lSelectedMailbox = mMailboxCache.CheckIsSelectedMailbox(pMailboxHandle, lUIDValidity);
foreach (var lUID in pUIDs)
{
var lMessageHandle = lSelectedMailbox.GetHandle(lUID);
if (lMessageHandle == null)
{
lUIDs.Add(lUID); // don't have a handle
}
else if (lMessageHandle.ContainsNone(pItems))
{
lUIDs.Add(lUID); // have to get all the attributes, may as well fetch them with the ones where I might need all the attributes
}
else
{
lMessageHandles.Add(lMessageHandle);
}
}
}
// for the messages I have handles for, fetch the missing attributes
////////////////////////////////////////////////////////////////////
if (lMessageHandles.Count > 0)
{
// split the handles into groups based on what attributes need to be retrieved, for each group do the retrieval
foreach (var lGroup in ZFetchCacheItemsGroups(lMessageHandles, pItems))
{
await ZFetchCacheItemsAsync(pMC, lGroup, pProgress, lContext).ConfigureAwait(false);
}
}
// for the messages only identified by UID or where I have to get all the items
////////////////////////////////////////////////////////////////////////////////////
if (lUIDs.Count > 0)
{
await ZUIDFetchCacheItemsAsync(pMC, pMailboxHandle, lUIDs, pItems, pProgress, lContext).ConfigureAwait(false);
// resolve uids -> handles whilst blocking select exclusive access
//
using (var lBlock = await mSelectExclusiveAccess.GetBlockAsync(pMC, lContext).ConfigureAwait(false))
{
cSelectedMailbox lSelectedMailbox = mMailboxCache.CheckIsSelectedMailbox(pMailboxHandle, lUIDValidity);
foreach (var lUID in lUIDs)
{
var lMessageHandle = lSelectedMailbox.GetHandle(lUID);
if (lMessageHandle != null)
{
lMessageHandles.Add(lMessageHandle);
}
}
}
}
return(lMessageHandles);
}