Applied-Energistics-2-tiler.../me/storage/NetworkInventoryHandler.java

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package appeng.me.storage;
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import java.util.ArrayList;
import java.util.Comparator;
import java.util.Iterator;
import java.util.LinkedList;
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import java.util.List;
import java.util.TreeMap;
import appeng.api.config.AccessRestriction;
import appeng.api.config.Actionable;
import appeng.api.config.SecurityPermissions;
import appeng.api.networking.IGrid;
import appeng.api.networking.IGridNode;
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import appeng.api.networking.security.BaseActionSource;
import appeng.api.networking.security.ISecurityGrid;
import appeng.api.networking.security.MachineSource;
import appeng.api.networking.security.PlayerSource;
import appeng.api.storage.IMEInventoryHandler;
import appeng.api.storage.StorageChannel;
import appeng.api.storage.data.IAEStack;
import appeng.api.storage.data.IItemList;
import appeng.me.cache.SecurityCache;
public class NetworkInventoryHandler<T extends IAEStack<T>> implements IMEInventoryHandler<T>
{
private final static Comparator prioritySorter = new Comparator<Integer>() {
@Override
public int compare(Integer o1, Integer o2)
{
return o2 - o1;
}
};
final StorageChannel myChannel;
final SecurityCache security;
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// final TreeMultimap<Integer, IMEInventoryHandler<T>> prorityInventory;
final TreeMap<Integer, List<IMEInventoryHandler<T>>> prorityInventory;
public NetworkInventoryHandler(StorageChannel chan, SecurityCache security) {
myChannel = chan;
this.security = security;
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prorityInventory = new TreeMap( prioritySorter ); // TreeMultimap.create( prioritySorter, hashSorter );
}
public void addNewStorage(IMEInventoryHandler<T> h)
{
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int priority = h.getPriority();
List<IMEInventoryHandler<T>> list = prorityInventory.get( priority );
if ( list == null )
prorityInventory.put( priority, list = new ArrayList() );
list.add( h );
}
static int currentPass = 0;
int myPass = 0;
static final ThreadLocal<LinkedList> depth = new ThreadLocal<LinkedList>();
private LinkedList getDepth()
{
LinkedList s = depth.get();
if ( s == null )
depth.set( s = new LinkedList() );
return s;
}
private boolean diveList(NetworkInventoryHandler<T> networkInventoryHandler)
{
LinkedList cDepth = getDepth();
if ( cDepth.contains( networkInventoryHandler ) )
return true;
cDepth.push( this );
return false;
}
private boolean diveIteration(NetworkInventoryHandler<T> networkInventoryHandler)
{
if ( getDepth().isEmpty() )
{
currentPass++;
myPass = currentPass;
}
else
{
if ( currentPass == myPass )
return true;
else
myPass = currentPass;
}
getDepth().push( this );
return false;
}
private void surface(NetworkInventoryHandler<T> networkInventoryHandler)
{
if ( getDepth().pop() != this )
throw new RuntimeException( "Invalid Access to Networked Storage API detected." );
}
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private boolean testPermission(BaseActionSource src, SecurityPermissions permission)
{
if ( src.isPlayer() )
{
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if ( !security.hasPermission( ((PlayerSource) src).player, permission ) )
return true;
}
else if ( src.isMachine() )
{
if ( security.isAvailable() )
{
IGridNode n = ((MachineSource) src).via.getActionableNode();
if ( n == null )
return true;
IGrid gn = n.getGrid();
if ( gn != security.myGrid )
{
int playerID = -1;
ISecurityGrid sg = gn.getCache( ISecurityGrid.class );
playerID = sg.getOwner();
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if ( !security.hasPermission( playerID, permission ) )
return true;
}
}
}
return false;
}
@Override
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public T injectItems(T input, Actionable type, BaseActionSource src)
{
if ( diveList( this ) )
return input;
if ( testPermission( src, SecurityPermissions.INJECT ) )
{
surface( this );
return input;
}
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Iterator<List<IMEInventoryHandler<T>>> i = prorityInventory.values().iterator();// asMap().entrySet().iterator();
while (i.hasNext())
{
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List<IMEInventoryHandler<T>> invList = i.next();
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Iterator<IMEInventoryHandler<T>> ii = invList.iterator();
while (ii.hasNext() && input != null)
{
IMEInventoryHandler<T> inv = ii.next();
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if ( inv.canAccept( input ) && (inv.extractItems( input, Actionable.SIMULATE, src ) != null || inv.isPrioritized( input )) )
input = inv.injectItems( input, type, src );
}
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ii = invList.iterator();
while (ii.hasNext() && input != null)
{
IMEInventoryHandler<T> inv = ii.next();
if ( inv.canAccept( input ) )
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input = inv.injectItems( input, type, src );
}
}
surface( this );
return input;
}
@Override
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public T extractItems(T request, Actionable mode, BaseActionSource src)
{
if ( diveList( this ) )
return null;
if ( testPermission( src, SecurityPermissions.EXTRACT ) )
{
surface( this );
return null;
}
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Iterator<List<IMEInventoryHandler<T>>> i = prorityInventory.descendingMap().values().iterator();// prorityInventory.asMap().descendingMap().entrySet().iterator();
T output = request.copy();
request = request.copy();
output.setStackSize( 0 );
long req = request.getStackSize();
while (i.hasNext())
{
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List<IMEInventoryHandler<T>> invList = i.next();
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Iterator<IMEInventoryHandler<T>> ii = invList.iterator();
while (ii.hasNext() && output.getStackSize() < req)
{
IMEInventoryHandler<T> inv = ii.next();
request.setStackSize( req - output.getStackSize() );
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output.add( inv.extractItems( request, mode, src ) );
}
}
surface( this );
if ( output.getStackSize() <= 0 )
return null;
return output;
}
@Override
public IItemList<T> getAvailableItems(IItemList out)
{
if ( diveIteration( this ) )
return out;
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// for (Entry<Integer, IMEInventoryHandler<T>> h : prorityInventory.entries())
for (List<IMEInventoryHandler<T>> i : prorityInventory.values())
for (IMEInventoryHandler<T> j : i)
out = j.getAvailableItems( out );
surface( this );
return out;
}
@Override
public StorageChannel getChannel()
{
return myChannel;
}
@Override
public AccessRestriction getAccess()
{
return AccessRestriction.READ_WRITE;
}
@Override
public boolean isPrioritized(T input)
{
return false;
}
@Override
public boolean canAccept(T input)
{
return true;
}
@Override
public int getPriority()
{
return 0;
}
@Override
public int getSlot()
{
return 0;
}
@Override
public boolean validForPass(int i)
{
return true;
}
}