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java.lang.Objectorg.apache.hadoop.hbase.zookeeper.ZooKeeperListener
org.apache.hadoop.hbase.security.access.ZKPermissionWatcher
public class ZKPermissionWatcher
Handles synchronization of access control list entries and updates
throughout all nodes in the cluster. The AccessController instance
on the _acl_ table regions, creates a znode for each table as
/hbase/acl/tablename, with the znode data containing a serialized
list of the permissions granted for the table. The AccessController
instances on all other cluster hosts watch the znodes for updates, which
trigger updates in the TableAuthManager permission cache.
| Field Summary |
|---|
| Fields inherited from class org.apache.hadoop.hbase.zookeeper.ZooKeeperListener |
|---|
watcher |
| Constructor Summary | |
|---|---|
ZKPermissionWatcher(ZooKeeperWatcher watcher,
TableAuthManager authManager,
org.apache.hadoop.conf.Configuration conf)
|
|
| Method Summary | |
|---|---|
void |
nodeChildrenChanged(String path)
Called when an existing node has a child node added or removed. |
void |
nodeCreated(String path)
Called when a new node has been created. |
void |
nodeDataChanged(String path)
Called when an existing node has changed data. |
void |
nodeDeleted(String path)
Called when a node has been deleted |
void |
start()
|
void |
writeToZookeeper(byte[] entry,
byte[] permsData)
Write a table's access controls to the permissions mirror in zookeeper |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public ZKPermissionWatcher(ZooKeeperWatcher watcher,
TableAuthManager authManager,
org.apache.hadoop.conf.Configuration conf)
| Method Detail |
|---|
public void start()
throws org.apache.zookeeper.KeeperException
org.apache.zookeeper.KeeperExceptionpublic void nodeCreated(String path)
ZooKeeperListener
nodeCreated in class ZooKeeperListenerpath - full path of the new nodepublic void nodeDeleted(String path)
ZooKeeperListener
nodeDeleted in class ZooKeeperListenerpath - full path of the deleted nodepublic void nodeDataChanged(String path)
ZooKeeperListener
nodeDataChanged in class ZooKeeperListenerpath - full path of the updated nodepublic void nodeChildrenChanged(String path)
ZooKeeperListener
nodeChildrenChanged in class ZooKeeperListenerpath - full path of the node whose children have changed
public void writeToZookeeper(byte[] entry,
byte[] permsData)
entry - permsData -
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