/// <summary>
/// 获取路径节点
/// </summary>
/// <param name="IsSavePrev">ture 当前点为第一个节点时，当前点就为第一个节点</param>
public PathData GetPathData(PathAccess Access, bool IsSavePrev = false)
{
int index = 0;
if (Access == PathAccess.Prev)
{
index = m_Index - 1;
if (index < 0 && IsSavePrev == true)
{
index = 0;
}
return(GetPathData(index));
}
else if (Access == PathAccess.Cur)
{
index = m_Index;
return(GetPathData(index));
}
else if (Access == PathAccess.Next)
{
index = m_Index + 1;
return(GetPathData(index));
}
return(null);
}
/// <summary>
/// 获取路径节点
/// </summary>
public PathData GetPathData(PathAccess Access, int index)
{
if (Access == PathAccess.Cur)
{
return(GetPathData(index));
}
else if (Access == PathAccess.Prev)
{
return(GetPathData(index - 1));
}
else if (Access == PathAccess.Next)
{
return(GetPathData(index + 1));
}
return(null);
}
protected override PathAccess FetchPathAccess(string pathName)
{
PathAccess access;
if (!pathAccessMap.TryGetValue(pathName, out access)) {
string pathTypeName;
if (!pathTypes.TryGetValue(pathName, out pathTypeName))
throw new ApplicationException("Path '" + pathName + "' not found input this root service.");
if (deletedPaths.Contains(pathName))
throw new ApplicationException("Path '" + pathName + "' did exist but was deleted.");
access = new PathAccess(new MemoryStream(), pathName, pathTypeName);
pathAccessMap[pathName] = access;
}
return access;
}
private bool SynchronizePathInfoData(PathAccess pathFile, IServiceAddress rootServer)
{
// Get the last entry,
PathRecordEntry lastEntry = pathFile.GetLastEntry();
long uid;
DataAddress daddr;
if (lastEntry == null) {
uid = 0;
daddr = null;
} else {
uid = lastEntry.Uid;
daddr = lastEntry.Address;
}
while (true) {
// Fetch a bundle for the path from the root server,
MessageStream outputStream = new MessageStream();
outputStream.AddMessage(new Message("internalFetchPathDataBundle", pathFile.PathName, uid, daddr));
// Send the command
IMessageProcessor processor = connector.Connect(rootServer, ServiceType.Root);
IEnumerable<Message> result = processor.Process(outputStream);
long[] uids = null;
DataAddress[] dataAddrs = null;
foreach (Message m in result) {
if (m.HasError) {
// If it's a connection fault, report the error and return false
if (ReplicatedValueStore.IsConnectionFault(m)) {
serviceTracker.ReportServiceDownClientReport(rootServer, ServiceType.Root);
return false;
}
throw new ApplicationException(m.ErrorMessage);
}
uids = (long[]) m.Arguments[0].Value;
dataAddrs = (DataAddress[]) m.Arguments[1].Value;
}
// If it's empty, we reached the end so return,
if (uids == null || uids.Length == 0) {
break;
}
// Insert the data
pathFile.AddPathDataEntries(uids, dataAddrs);
// The last,
uid = uids[uids.Length - 1];
daddr = dataAddrs[dataAddrs.Length - 1];
}
return true;
}