*/
package org.opendaylight.openflowplugin.impl.role;
-import javax.annotation.Nullable;
-import java.util.concurrent.Future;
-
-import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Preconditions;
-import com.google.common.base.Verify;
-import com.google.common.util.concurrent.AsyncFunction;
-import com.google.common.util.concurrent.Futures;
-import com.google.common.util.concurrent.JdkFutureAdapters;
-import com.google.common.util.concurrent.ListenableFuture;
-import java.util.concurrent.Future;
import java.util.concurrent.Semaphore;
+import java.util.concurrent.TimeUnit;
+import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import org.opendaylight.controller.md.sal.common.api.clustering.CandidateAlreadyRegisteredException;
import org.opendaylight.controller.md.sal.common.api.clustering.Entity;
import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipCandidateRegistration;
import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipService;
-import org.opendaylight.openflowplugin.api.openflow.connection.ConnectionContext;
-import org.opendaylight.openflowplugin.api.openflow.device.DeviceContext;
-import org.opendaylight.openflowplugin.api.openflow.device.DeviceState;
+import org.opendaylight.openflowplugin.api.openflow.device.DeviceInfo;
import org.opendaylight.openflowplugin.api.openflow.device.RequestContext;
+import org.opendaylight.openflowplugin.api.openflow.lifecycle.LifecycleConductor;
import org.opendaylight.openflowplugin.api.openflow.role.RoleContext;
import org.opendaylight.openflowplugin.impl.rpc.AbstractRequestContext;
-import org.opendaylight.openflowplugin.impl.services.SalRoleServiceImpl;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.role.service.rev150727.OfpRole;
import org.opendaylight.yang.gen.v1.urn.opendaylight.role.service.rev150727.SalRoleService;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.role.service.rev150727.SetRoleInput;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.role.service.rev150727.SetRoleInputBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.role.service.rev150727.SetRoleOutput;
-import org.opendaylight.yangtools.yang.common.RpcResult;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
- * Created by kramesha on 9/12/15.
+ * Role context hold information about entity ownership registration,
+ * register and unregister candidate (main and tx)
*/
-public class RoleContextImpl implements RoleContext {
+class RoleContextImpl implements RoleContext {
+
private static final Logger LOG = LoggerFactory.getLogger(RoleContextImpl.class);
+ private static final int TIMEOUT = 12;
+ private final DeviceInfo deviceInfo;
private final EntityOwnershipService entityOwnershipService;
- private EntityOwnershipCandidateRegistration entityOwnershipCandidateRegistration;
- private final DeviceContext deviceContext;
- private final Entity entity;
- private SalRoleService salRoleService;
+ private volatile EntityOwnershipCandidateRegistration entityOwnershipCandidateRegistration = null;
+ private volatile EntityOwnershipCandidateRegistration txEntityOwnershipCandidateRegistration = null;
- private EntityOwnershipCandidateRegistration txEntityOwnershipCandidateRegistration;
+ private final Entity entity;
private final Entity txEntity;
- private final Semaphore mainCandidateGuard = new Semaphore(1, true);
- private final Semaphore txCandidateGuard = new Semaphore(1, true);
- private volatile ROLE_CONTEXT_STATE state;
- private volatile boolean txLockOwned;
- private volatile OfpRole propagatingRole;
+ private SalRoleService salRoleService = null;
- public RoleContextImpl(final DeviceContext deviceContext, final EntityOwnershipService entityOwnershipService,
- final Entity entity, final Entity txEnitity) {
- this.entityOwnershipService = Preconditions.checkNotNull(entityOwnershipService);
- this.deviceContext = Preconditions.checkNotNull(deviceContext);
- this.entity = Preconditions.checkNotNull(entity);
- this.txEntity = Preconditions.checkNotNull(txEnitity);
+ private final Semaphore roleChangeGuard = new Semaphore(1, true);
- salRoleService = new SalRoleServiceImpl(this, deviceContext);
- }
+ private final LifecycleConductor conductor;
- @Override
- public void initialization() throws CandidateAlreadyRegisteredException {
- state = ROLE_CONTEXT_STATE.STARTING;
- LOG.debug("Initialization requestOpenflowEntityOwnership for entity {}", entity);
- entityOwnershipCandidateRegistration = entityOwnershipService.registerCandidate(entity);
- LOG.debug("RoleContextImpl : Candidate registered with ownership service for device :{}", deviceContext
- .getPrimaryConnectionContext().getNodeId().getValue());
+ RoleContextImpl(final DeviceInfo deviceInfo, final EntityOwnershipService entityOwnershipService, final Entity entity, final Entity txEntity, final LifecycleConductor lifecycleConductor) {
+ this.entityOwnershipService = entityOwnershipService;
+ this.entity = entity;
+ this.txEntity = txEntity;
+ this.deviceInfo = deviceInfo;
+ this.conductor = lifecycleConductor;
}
@Override
- public ListenableFuture<Void> onRoleChanged(final OfpRole oldRole, final OfpRole newRole) {
- LOG.trace("onRoleChanged method call for Entity {}", entity);
-
- if (!isDeviceConnected()) {
- // this can happen as after the disconnect, we still get a last messsage from EntityOwnershipService.
- LOG.info("Device {} is disconnected from this node. Hence not attempting a role change.",
- deviceContext.getPrimaryConnectionContext().getNodeId());
- LOG.debug("SetRole cancelled for entity [{}], reason = device disconnected.", entity);
- return Futures.immediateFailedFuture(new Exception(
- "Device disconnected - stopped by setRole: " + deviceContext
- .getPrimaryConnectionContext().getNodeId()));
- }
-
- LOG.debug("Role change received from ownership listener from {} to {} for device:{}", oldRole, newRole,
- deviceContext.getPrimaryConnectionContext().getNodeId());
-
- final SetRoleInput setRoleInput = (new SetRoleInputBuilder())
- .setControllerRole(newRole)
- .setNode(new NodeRef(deviceContext.getDeviceState().getNodeInstanceIdentifier()))
- .build();
-
- final Future<RpcResult<SetRoleOutput>> setRoleOutputFuture = salRoleService.setRole(setRoleInput);
-
- return Futures.transform(JdkFutureAdapters.listenInPoolThread(setRoleOutputFuture),
- new AsyncFunction<RpcResult<SetRoleOutput>, Void>() {
- @Override
- public ListenableFuture<Void> apply(final RpcResult<SetRoleOutput> setRoleOutputRpcResult) throws Exception {
- LOG.debug("Rolechange {} successful made on switch :{}", newRole, deviceContext.getDeviceState().getNodeId());
- final ListenableFuture<Void> nextStepFuture;
- switch (state) {
- case STARTING:
- if (OfpRole.BECOMESLAVE.equals(newRole)) {
- getDeviceState().setRole(newRole);
- nextStepFuture = Futures.immediateFuture(null);
- } else if (OfpRole.BECOMEMASTER.equals(newRole)) {
- nextStepFuture = deviceContext.onClusterRoleChange(newRole);
- } else {
- nextStepFuture = Futures.immediateFuture(null);
- }
-
- break;
- case WORKING:
- nextStepFuture = deviceContext.onClusterRoleChange(newRole);
- break;
- //case TEARING_DOWN:
- default:
- nextStepFuture = Futures.immediateFuture(null);
- break;
- }
-
- return nextStepFuture;
- }
- });
+ public boolean initialization() {
+ LOG.info("Initialization main candidate for node {}", deviceInfo.getNodeId());
+ return registerCandidate(this.entity);
}
@Override
- public void setupTxCandidate() throws CandidateAlreadyRegisteredException {
- LOG.debug("setupTxCandidate for entity {} and Transaction entity {}", entity, txEntity);
- Verify.verify(txEntity != null);
-
- txEntityOwnershipCandidateRegistration = entityOwnershipService.registerCandidate(txEntity);
- }
-
- @Override
- public void close() {
- if (entityOwnershipCandidateRegistration != null) {
- LOG.debug("Closing EntityOwnershipCandidateRegistration for {}", entity);
- entityOwnershipCandidateRegistration.close();
+ public void unregisterAllCandidates() {
+ LOG.info("Role context closed, unregistering all candidates for ownership for node {}", deviceInfo.getNodeId());
+ if (isMainCandidateRegistered()) {
+ unregisterCandidate(this.entity);
+ }
+ if (isTxCandidateRegistered()) {
+ unregisterCandidate(this.txEntity);
}
- promoteStateToTearingDown();
- }
-
- @Override
- public Entity getEntity() {
- return entity;
- }
-
- @Override
- public Entity getTxEntity() {
- return txEntity;
- }
-
- private boolean isDeviceConnected() {
- return ConnectionContext.CONNECTION_STATE.WORKING.equals(
- deviceContext.getPrimaryConnectionContext().getConnectionState());
}
@Nullable
@Override
public <T> RequestContext<T> createRequestContext() {
- final AbstractRequestContext<T> ret = new AbstractRequestContext<T>(deviceContext.getReservedXid()) {
+ return new AbstractRequestContext<T>(conductor.reserveXidForDeviceMessage(deviceInfo)) {
@Override
public void close() {
}
};
- return ret;
- }
-
- @VisibleForTesting
- void setSalRoleService(final SalRoleService salRoleService) {
- this.salRoleService = salRoleService;
}
@Override
- public DeviceState getDeviceState() {
- return deviceContext.getDeviceState();
+ public void setSalRoleService(@Nonnull final SalRoleService salRoleService) {
+ Preconditions.checkNotNull(salRoleService);
+ this.salRoleService = salRoleService;
}
@Override
- public void suspendTxCandidate() {
- if (txEntityOwnershipCandidateRegistration != null) {
- txEntityOwnershipCandidateRegistration.close();
- txEntityOwnershipCandidateRegistration = null;
- }
+ public SalRoleService getSalRoleService() {
+ return this.salRoleService;
}
@Override
- public DeviceContext getDeviceContext() {
- return deviceContext;
+ public Entity getEntity() {
+ return this.entity;
}
@Override
- public Semaphore getMainCandidateGuard() {
- return mainCandidateGuard;
+ public Entity getTxEntity() {
+ return this.txEntity;
}
@Override
- public Semaphore getTxCandidateGuard() {
- return txCandidateGuard;
+ public DeviceInfo getDeviceInfo() {
+ return deviceInfo;
}
@Override
- public ROLE_CONTEXT_STATE getState() {
- return state;
+ public boolean isMainCandidateRegistered() {
+ return entityOwnershipCandidateRegistration != null;
}
@Override
- public boolean isTxLockOwned() {
- return txLockOwned;
+ public boolean isTxCandidateRegistered() {
+ return txEntityOwnershipCandidateRegistration != null;
}
@Override
- public void setTxLockOwned(final boolean txLockOwned) {
- this.txLockOwned = txLockOwned;
- }
-
- private void promoteStateToTearingDown() {
- state = ROLE_CONTEXT_STATE.TEARING_DOWN;
+ public boolean registerCandidate(final Entity entity_) {
+ boolean permit = false;
+ try {
+ permit = roleChangeGuard.tryAcquire(TIMEOUT, TimeUnit.SECONDS);
+ if(permit) {
+ LOG.debug("Register candidate for entity {}", entity_);
+ if (entity_.equals(this.entity)) {
+ entityOwnershipCandidateRegistration = entityOwnershipService.registerCandidate(entity_);
+ } else {
+ txEntityOwnershipCandidateRegistration = entityOwnershipService.registerCandidate(entity_);
+ }
+ } else {
+ return false;
+ }
+ } catch (final CandidateAlreadyRegisteredException e) {
+ LOG.warn("Candidate for entity {} is already registered.", entity_.getType());
+ return false;
+ } catch (final InterruptedException e) {
+ LOG.warn("Cannot acquire semaphore for register entity {} candidate.", entity_.getType());
+ return false;
+ } finally {
+ if (permit) {
+ roleChangeGuard.release();
+ }
+ }
+ return true;
}
@Override
- public void promoteStateToWorking() {
- state = ROLE_CONTEXT_STATE.WORKING;
+ public boolean unregisterCandidate(final Entity entity_) {
+ boolean permit = false;
+ try {
+ permit = roleChangeGuard.tryAcquire(TIMEOUT, TimeUnit.SECONDS);
+ if(permit) {
+ if (entity_.equals(this.entity)) {
+ if (entityOwnershipCandidateRegistration != null) {
+ LOG.debug("Unregister candidate for entity {}", entity_);
+ entityOwnershipCandidateRegistration.close();
+ entityOwnershipCandidateRegistration = null;
+ }
+ } else {
+ if (txEntityOwnershipCandidateRegistration != null) {
+ LOG.debug("Unregister candidate for tx entity {}", entity_);
+ txEntityOwnershipCandidateRegistration.close();
+ txEntityOwnershipCandidateRegistration = null;
+ }
+ }
+ } else {
+ return false;
+ }
+ } catch (final InterruptedException e) {
+ LOG.warn("Cannot acquire semaphore for unregister entity {} candidate.", entity_.getType());
+ return false;
+ } finally {
+ if (permit) {
+ roleChangeGuard.release();
+ }
+ }
+ return true;
}
@Override
- public OfpRole getPropagatingRole() {
- return propagatingRole;
+ public void close() {
+ unregisterAllCandidates();
}
- @Override
- public void setPropagatingRole(final OfpRole propagatingRole) {
- this.propagatingRole = propagatingRole;
+ public boolean isMaster(){
+ return (txEntityOwnershipCandidateRegistration != null && entityOwnershipCandidateRegistration != null);
}
}
Code Review / openflowplugin.git / blobdiff