/// <summary>Parse an ACL list.</summary>
/// <remarks>
/// Parse an ACL list. This includes configuration indirection
/// <see cref="Org.Apache.Hadoop.Util.ZKUtil.ResolveConfIndirection(string)"/>
/// </remarks>
/// <param name="zkAclConf">configuration string</param>
/// <returns>an ACL list</returns>
/// <exception cref="System.IO.IOException">on a bad ACL parse</exception>
public virtual IList <ACL> ParseACLs(string zkAclConf)
{
try
{
return(ZKUtil.ParseACLs(ZKUtil.ResolveConfIndirection(zkAclConf)));
}
catch (ZKUtil.BadAclFormatException e)
{
throw new IOException("Parsing " + zkAclConf + " :" + e, e);
}
}
/// <summary>Utility method to fetch the ZK ACLs from the configuration</summary>
/// <exception cref="System.Exception"/>
public static IList <ACL> GetZKAcls(Configuration conf)
{
// Parse authentication from configuration.
string zkAclConf = conf.Get(YarnConfiguration.RmZkAcl, YarnConfiguration.DefaultRmZkAcl
);
try
{
zkAclConf = ZKUtil.ResolveConfIndirection(zkAclConf);
return(ZKUtil.ParseACLs(zkAclConf));
}
catch (Exception e)
{
Log.Error("Couldn't read ACLs based on " + YarnConfiguration.RmZkAcl);
throw;
}
}
/// <exception cref="Org.Apache.Hadoop.HadoopIllegalArgumentException"/>
/// <exception cref="System.IO.IOException"/>
/// <exception cref="Org.Apache.Zookeeper.KeeperException"/>
private void InitZK()
{
zkQuorum = conf.Get(ZkQuorumKey);
int zkTimeout = conf.GetInt(ZkSessionTimeoutKey, ZkSessionTimeoutDefault);
// Parse ACLs from configuration.
string zkAclConf = conf.Get(ZkAclKey, ZkAclDefault);
zkAclConf = ZKUtil.ResolveConfIndirection(zkAclConf);
IList <ACL> zkAcls = ZKUtil.ParseACLs(zkAclConf);
if (zkAcls.IsEmpty())
{
zkAcls = ZooDefs.Ids.CreatorAllAcl;
}
// Parse authentication from configuration.
string zkAuthConf = conf.Get(ZkAuthKey);
zkAuthConf = ZKUtil.ResolveConfIndirection(zkAuthConf);
IList <ZKUtil.ZKAuthInfo> zkAuths;
if (zkAuthConf != null)
{
zkAuths = ZKUtil.ParseAuth(zkAuthConf);
}
else
{
zkAuths = Collections.EmptyList();
}
// Sanity check configuration.
Preconditions.CheckArgument(zkQuorum != null, "Missing required configuration '%s' for ZooKeeper quorum"
, ZkQuorumKey);
Preconditions.CheckArgument(zkTimeout > 0, "Invalid ZK session timeout %s", zkTimeout
);
int maxRetryNum = conf.GetInt(CommonConfigurationKeys.HaFcElectorZkOpRetriesKey,
CommonConfigurationKeys.HaFcElectorZkOpRetriesDefault);
elector = new ActiveStandbyElector(zkQuorum, zkTimeout, GetParentZnode(), zkAcls,
zkAuths, new ZKFailoverController.ElectorCallbacks(this), maxRetryNum);
}
