Revision 89e1fc26 lib/utils.py
| b/lib/utils.py | ||
|---|---|---|
| 397 | 397 |
|
| 398 | 398 |
|
| 399 | 399 |
class HostInfo: |
| 400 |
"""Class holding host info as returned by gethostbyname
|
|
| 400 |
"""Class implementing resolver and hostname functionality
|
|
| 401 | 401 |
|
| 402 | 402 |
""" |
| 403 |
def __init__(self, name, aliases, ipaddrs):
|
|
| 403 |
def __init__(self, name=None):
|
|
| 404 | 404 |
"""Initialize the host name object. |
| 405 | 405 |
|
| 406 |
Arguments are the same as returned by socket.gethostbyname_ex() |
|
| 406 |
If the name argument is not passed, it will use this system's |
|
| 407 |
name. |
|
| 407 | 408 |
|
| 408 | 409 |
""" |
| 409 |
self.name = name |
|
| 410 |
self.aliases = aliases |
|
| 411 |
self.ipaddrs = ipaddrs |
|
| 410 |
if name is None: |
|
| 411 |
name = self.SysName() |
|
| 412 |
|
|
| 413 |
self.query = name |
|
| 414 |
self.name, self.aliases, self.ipaddrs = self.LookupHostname(name) |
|
| 412 | 415 |
self.ip = self.ipaddrs[0] |
| 413 | 416 |
|
| 417 |
@staticmethod |
|
| 418 |
def SysName(): |
|
| 419 |
"""Return the current system's name. |
|
| 414 | 420 |
|
| 415 |
def LookupHostname(hostname): |
|
| 416 |
"""Look up hostname |
|
| 421 |
This is simply a wrapper over socket.gethostname() |
|
| 417 | 422 |
|
| 418 |
Args:
|
|
| 419 |
hostname: hostname to look up, can be also be a non FQDN
|
|
| 423 |
"""
|
|
| 424 |
return socket.gethostname()
|
|
| 420 | 425 |
|
| 421 |
Returns: |
|
| 422 |
a HostInfo object |
|
| 426 |
@staticmethod |
|
| 427 |
def LookupHostname(hostname): |
|
| 428 |
"""Look up hostname |
|
| 423 | 429 |
|
| 424 |
""" |
|
| 425 |
try: |
|
| 426 |
(name, aliases, ipaddrs) = socket.gethostbyname_ex(hostname) |
|
| 427 |
except socket.gaierror: |
|
| 428 |
# hostname not found in DNS |
|
| 429 |
return None |
|
| 430 |
Args: |
|
| 431 |
hostname: hostname to look up |
|
| 432 |
|
|
| 433 |
Returns: |
|
| 434 |
a tuple (name, aliases, ipaddrs) as returned by socket.gethostbyname_ex |
|
| 435 |
in case of errors in resolving, we raise a ResolverError |
|
| 436 |
|
|
| 437 |
""" |
|
| 438 |
try: |
|
| 439 |
result = socket.gethostbyname_ex(hostname) |
|
| 440 |
except socket.gaierror, err: |
|
| 441 |
# hostname not found in DNS |
|
| 442 |
raise errors.ResolverError(hostname, err.args[0], err.args[1]) |
|
| 430 | 443 |
|
| 431 |
return HostInfo(name, aliases, ipaddrs)
|
|
| 444 |
return result
|
|
| 432 | 445 |
|
| 433 | 446 |
|
| 434 | 447 |
def ListVolumeGroups(): |
Also available in: Unified diff