| package net.onrc.onos.ofcontroller.flowmanager; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.CompletionService; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ExecutorCompletionService; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.Future; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import net.onrc.onos.datagrid.IDatagridService; |
| import net.onrc.onos.graph.GraphDBOperation; |
| import net.onrc.onos.ofcontroller.core.INetMapTopologyObjects.IFlowPath; |
| import net.onrc.onos.ofcontroller.util.Dpid; |
| import net.onrc.onos.ofcontroller.util.FlowId; |
| import net.onrc.onos.ofcontroller.util.FlowPath; |
| |
| public class ParallelFlowDatabaseOperation extends FlowDatabaseOperation { |
| private final static Logger log = LoggerFactory.getLogger(FlowDatabaseOperation.class); |
| |
| private final static int numThreads = 20; |
| private final static ExecutorService executor = Executors.newFixedThreadPool(numThreads); |
| |
| static ArrayList<FlowPath> getAllFlows(GraphDBOperation dbHandler) { |
| Iterable<IFlowPath> flowPathsObj = null; |
| ArrayList<FlowPath> flowPaths = new ArrayList<FlowPath>(); |
| |
| try { |
| flowPathsObj = dbHandler.getAllFlowPaths(); |
| } catch (Exception e) { |
| // TODO: handle exceptions |
| dbHandler.rollback(); |
| log.error(":getAllFlowPaths failed"); |
| return flowPaths; |
| } |
| if ((flowPathsObj == null) || (flowPathsObj.iterator().hasNext() == false)) { |
| dbHandler.commit(); |
| return flowPaths; // No Flows found |
| } |
| |
| CompletionService<FlowPath> tasks = new ExecutorCompletionService<>(executor); |
| int numTasks = 0; |
| for(IFlowPath flowObj : flowPathsObj) { |
| tasks.submit(new ExtractFlowTask(flowObj)); |
| numTasks++; |
| } |
| for(int i = 0; i < numTasks; i++) { |
| try { |
| FlowPath flowPath = tasks.take().get(); |
| if(flowPath != null) { |
| flowPaths.add(flowPath); |
| } |
| } catch (InterruptedException | ExecutionException e) { |
| log.error("Error reading FlowPath from IFlowPath object"); |
| } |
| } |
| dbHandler.commit(); |
| return flowPaths; |
| } |
| |
| /* |
| * params: collection of dpid |
| * |
| * return: all flows where src dpid is in collection |
| * |
| * Note: this function is implemented naively and inefficiently |
| */ |
| static ArrayList<FlowPath> getFlowsForSwitches(GraphDBOperation dbHandler, Collection<Dpid> switches) { |
| Iterable<IFlowPath> flowPathsObj = null; |
| ArrayList<FlowPath> flowPaths = new ArrayList<FlowPath>(); |
| |
| try { |
| flowPathsObj = dbHandler.getAllFlowPaths(); |
| } catch (Exception e) { |
| // TODO: handle exceptions |
| dbHandler.rollback(); |
| log.error(":getAllFlowPaths failed"); |
| return flowPaths; |
| } |
| if ((flowPathsObj == null) || (flowPathsObj.iterator().hasNext() == false)) { |
| dbHandler.commit(); |
| return flowPaths; // No Flows found |
| } |
| |
| // convert the collection of switch dpids into a set of strings |
| Set<String> switchSet = new HashSet<>(); |
| for(Dpid dpid : switches) { |
| switchSet.add(dpid.toString()); |
| } |
| |
| CompletionService<FlowPath> tasks = new ExecutorCompletionService<>(executor); |
| int numTasks = 0; |
| for(IFlowPath flowObj : flowPathsObj) { |
| if(switchSet.contains(flowObj.getSrcSwitch())) { |
| tasks.submit(new ExtractFlowTask(flowObj)); |
| numTasks++; |
| } |
| } |
| for(int i = 0; i < numTasks; i++) { |
| try { |
| FlowPath flowPath = tasks.take().get(); |
| if(flowPath != null) { |
| flowPaths.add(flowPath); |
| } |
| } catch (InterruptedException | ExecutionException e) { |
| log.error("Error reading FlowPath from IFlowPath object"); |
| } |
| } |
| dbHandler.commit(); |
| return flowPaths; |
| } |
| |
| private final static class ExtractFlowTask implements Callable<FlowPath> { |
| private final IFlowPath flowObj; |
| |
| ExtractFlowTask(IFlowPath flowObj){ |
| this.flowObj = flowObj; |
| } |
| @Override |
| public FlowPath call() throws Exception { |
| return extractFlowPath(flowObj); |
| } |
| } |
| |
| static ArrayList<FlowPath> getFlows(GraphDBOperation dbHandler, |
| Collection<FlowId> flowIds) { |
| ArrayList<FlowPath> flowPaths = new ArrayList<FlowPath>(); |
| |
| CompletionService<FlowPath> tasks = new ExecutorCompletionService<>(executor); |
| int numTasks = 0; |
| for (FlowId flowId : flowIds) { |
| tasks.submit(new GetFlowTask(dbHandler, flowId)); |
| numTasks++; |
| } |
| for(int i = 0; i < numTasks; i++) { |
| try { |
| FlowPath flowPath = tasks.take().get(); |
| if(flowPath != null) { |
| flowPaths.add(flowPath); |
| } |
| } catch (InterruptedException | ExecutionException e) { |
| log.error("Error reading FlowPath from database"); |
| } |
| } |
| // TODO: should we commit? |
| //dbHandler.commit(); |
| return flowPaths; |
| } |
| |
| private final static class GetFlowTask implements Callable<FlowPath> { |
| private final GraphDBOperation dbHandler; |
| private final FlowId flowId; |
| |
| GetFlowTask(GraphDBOperation dbHandler, FlowId flowId) { |
| this.dbHandler = dbHandler; |
| this.flowId = flowId; |
| } |
| @Override |
| public FlowPath call() throws Exception{ |
| return getFlow(dbHandler, flowId); |
| } |
| } |
| |
| static boolean addFlow(GraphDBOperation dbHandler, FlowPath flowPath) { |
| Future<Boolean> result = executor.submit(new AddFlowTask(dbHandler, flowPath, null)); |
| // NOTE: This function is blocking |
| try { |
| return result.get(); |
| } catch (InterruptedException | ExecutionException e) { |
| return false; |
| } |
| } |
| |
| static boolean addFlow(GraphDBOperation dbHandler, FlowPath flowPath, IDatagridService datagridService) { |
| executor.submit(new AddFlowTask(dbHandler, flowPath, datagridService)); |
| // TODO: If we need the results, submit returns a Future that contains |
| // the result. |
| return true; |
| |
| } |
| |
| private final static class AddFlowTask implements Callable<Boolean> { |
| private final GraphDBOperation dbHandler; |
| private final FlowPath flowPath; |
| private final IDatagridService datagridService; |
| |
| AddFlowTask(GraphDBOperation dbHandler, |
| FlowPath flowPath, |
| IDatagridService datagridService) { |
| this.dbHandler = dbHandler; |
| this.flowPath = flowPath; |
| this.datagridService = datagridService; |
| } |
| |
| @Override |
| public Boolean call() throws Exception { |
| boolean success = FlowDatabaseOperation.addFlow(dbHandler, flowPath); |
| if(success) { |
| if(datagridService != null) { |
| datagridService.notificationSendFlowIdAdded(flowPath.flowId(), |
| flowPath.dataPath().srcPort().dpid()); |
| } |
| } |
| else { |
| log.error("Error adding flow path {} to database", flowPath); |
| } |
| return success; |
| |
| } |
| } |
| |
| static boolean deleteFlow(GraphDBOperation dbHandler, FlowId flowId) { |
| Future<Boolean> result = executor.submit(new DeleteFlowTask(dbHandler, flowId, null)); |
| // NOTE: This function is blocking |
| try { |
| return result.get(); |
| } catch (InterruptedException | ExecutionException e) { |
| return false; |
| } |
| } |
| |
| static boolean deleteFlow(GraphDBOperation dbHandler, FlowId flowId, IDatagridService datagridService) { |
| executor.submit(new DeleteFlowTask(dbHandler, flowId, datagridService)); |
| // TODO: If we need the results, submit returns a Future that contains |
| // the result. |
| return true; |
| } |
| |
| private final static class DeleteFlowTask implements Callable<Boolean> { |
| private final GraphDBOperation dbHandler; |
| private final FlowId flowId; |
| private final IDatagridService datagridService; |
| |
| DeleteFlowTask(GraphDBOperation dbHandler, FlowId flowId, IDatagridService datagridService) { |
| this.dbHandler = dbHandler; |
| this.flowId = flowId; |
| this.datagridService = datagridService; |
| } |
| @Override |
| public Boolean call() throws Exception{ |
| boolean success = FlowDatabaseOperation.deleteFlow(dbHandler, flowId); |
| if(success) { |
| if(datagridService != null) { |
| datagridService.notificationSendFlowIdRemoved(flowId); |
| } |
| } |
| else { |
| log.error("Error removing flow path {} from database", flowId); |
| } |
| return success; |
| } |
| } |
| } |