public DomainSocketFactory(DFSClient.Conf conf)
{
string feature;
if (conf.IsShortCircuitLocalReads() && (!conf.IsUseLegacyBlockReaderLocal()))
{
feature = "The short-circuit local reads feature";
}
else
{
if (conf.IsDomainSocketDataTraffic())
{
feature = "UNIX domain socket data traffic";
}
else
{
feature = null;
}
}
if (feature == null)
{
PerformanceAdvisory.Log.Debug("Both short-circuit local reads and UNIX domain socket are disabled."
);
}
else
{
if (conf.GetDomainSocketPath().IsEmpty())
{
throw new HadoopIllegalArgumentException(feature + " is enabled but " + DFSConfigKeys
.DfsDomainSocketPathKey + " is not set.");
}
else
{
if (DomainSocket.GetLoadingFailureReason() != null)
{
Log.Warn(feature + " cannot be used because " + DomainSocket.GetLoadingFailureReason
());
}
else
{
Log.Debug(feature + " is enabled.");
}
}
}
}
/// <summary>Get information about a domain socket path.</summary>
/// <param name="addr">The inet address to use.</param>
/// <param name="conf">The client configuration.</param>
/// <returns>Information about the socket path.</returns>
public virtual DomainSocketFactory.PathInfo GetPathInfo(IPEndPoint addr, DFSClient.Conf
conf)
{
// If there is no domain socket path configured, we can't use domain
// sockets.
if (conf.GetDomainSocketPath().IsEmpty())
{
return(DomainSocketFactory.PathInfo.NotConfigured);
}
// If we can't do anything with the domain socket, don't create it.
if (!conf.IsDomainSocketDataTraffic() && (!conf.IsShortCircuitLocalReads() || conf
.IsUseLegacyBlockReaderLocal()))
{
return(DomainSocketFactory.PathInfo.NotConfigured);
}
// If the DomainSocket code is not loaded, we can't create
// DomainSocket objects.
if (DomainSocket.GetLoadingFailureReason() != null)
{
return(DomainSocketFactory.PathInfo.NotConfigured);
}
// UNIX domain sockets can only be used to talk to local peers
if (!DFSClient.IsLocalAddress(addr))
{
return(DomainSocketFactory.PathInfo.NotConfigured);
}
string escapedPath = DomainSocket.GetEffectivePath(conf.GetDomainSocketPath(), addr
.Port);
DomainSocketFactory.PathState status = pathMap.GetIfPresent(escapedPath);
if (status == null)
{
return(new DomainSocketFactory.PathInfo(escapedPath, DomainSocketFactory.PathState
.Valid));
}
else
{
return(new DomainSocketFactory.PathInfo(escapedPath, status));
}
}