| /* |
| * To change this template, choose Tools | Templates |
| * and open the template in the editor. |
| */ |
| package net.onrc.onos.intent.persist; |
| |
| import com.esotericsoftware.kryo.Kryo; |
| import com.esotericsoftware.kryo.io.Output; |
| import edu.stanford.ramcloud.JRamCloud; |
| import java.io.ByteArrayOutputStream; |
| import java.util.concurrent.atomic.AtomicLong; |
| import net.onrc.onos.datagrid.web.IntentResource; |
| import net.onrc.onos.datastore.RCTable; |
| import net.onrc.onos.intent.IntentOperationList; |
| import net.onrc.onos.ofcontroller.networkgraph.INetworkGraphService; |
| import net.onrc.onos.ofcontroller.networkgraph.NetworkGraph; |
| import net.onrc.onos.ofcontroller.util.serializers.KryoFactory; |
| import net.onrc.onos.registry.controller.IControllerRegistryService; |
| import net.onrc.onos.registry.controller.IdBlock; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * |
| * @author nickkaranatsios |
| */ |
| public class PersistIntent { |
| private final static Logger log = LoggerFactory.getLogger(IntentResource.class); |
| private final static long range = 10000; |
| private final IControllerRegistryService controllerRegistry; |
| NetworkGraph graph = null; |
| private final String intentJournal = "G:IntentJournal"; |
| private RCTable table; |
| private Kryo kryo = new Kryo(); |
| private ByteArrayOutputStream stream; |
| private Output output = null; |
| private AtomicLong nextId = null; |
| private long rangeEnd; |
| private IdBlock idBlock = null; |
| |
| |
| public PersistIntent(final IControllerRegistryService controllerRegistry, INetworkGraphService ng) { |
| this.controllerRegistry = controllerRegistry; |
| this.graph = ng.getNetworkGraph(); |
| table = RCTable.getTable(intentJournal); |
| stream = new ByteArrayOutputStream(1024); |
| output = new Output(stream); |
| } |
| |
| public long getKey() { |
| long key; |
| if (idBlock == null) { |
| key = getNextBlock(); |
| } else { |
| key = nextId.incrementAndGet(); |
| if (key >= rangeEnd) { |
| key = getNextBlock(); |
| } |
| } |
| return key; |
| } |
| |
| private long getNextBlock() { |
| idBlock = controllerRegistry.allocateUniqueIdBlock(range); |
| nextId = new AtomicLong(idBlock.getStart()); |
| rangeEnd = idBlock.getEnd(); |
| return nextId.get(); |
| } |
| |
| public boolean persistIfLeader(long key, IntentOperationList operations) { |
| boolean leader = true; |
| boolean ret = false; |
| // TODO call controllerRegistry.isClusterLeader() |
| if (leader) { |
| try { |
| System.out.println("persist operations to ramcloud size of operations: " + operations.size()); |
| kryo.writeObject(output, operations); |
| output.close(); |
| byte[] buffer = stream.toByteArray(); |
| table.create(String.valueOf(key).getBytes(), buffer); |
| System.out.println("key is " + key + " value length is " + buffer.length); |
| ret = true; |
| } catch (JRamCloud.ObjectExistsException ex) { |
| log.warn("Failed to store intent journal with key " + key); |
| } |
| } |
| return ret; |
| } |
| } |