mirror of
https://github.com/xcat2/confluent.git
synced 2024-11-22 17:43:14 +00:00
257 lines
8.6 KiB
Python
257 lines
8.6 KiB
Python
import collections
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import eventlet
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import eventlet.event
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import os
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import pyghmi.ipmi.console as console
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import pyghmi.ipmi.command as ipmicommand
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console.session.select = eventlet.green.select
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_ipmithread = None
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#pullchain is a pipe to tug on to induce the ipmi thread process pending data
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pullchain = None
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chainpulled = False
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tmptimeout = None
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ipmiq = collections.deque([])
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ipmiwaiters = collections.deque([])
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ipmisessions = {}
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def wait_on_ipmi():
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waitevt = eventlet.event.Event()
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ipmiwaiters.append(waitevt)
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waitevt.wait()
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def _ipmi_evtloop():
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global tmptimeout
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global pullchain
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console.session.Session.register_handle_callback(pullchain[0],
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_process_chgs)
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while (1):
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if tmptimeout is not None:
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console.session.Session.wait_for_rsp(timeout=tmptimeout)
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tmptimeout = None
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else:
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console.session.Session.wait_for_rsp(timeout=600)
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while ipmiwaiters:
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waiter = ipmiwaiters.popleft()
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waiter.send()
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def _process_chgs(intline):
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#here we receive functions to run in our thread
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#the tuples on the deque consist of:
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#function, arg tuple, and optionally a callback
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#to send the return value back to the requester
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global chainpulled
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os.read(intline,1) # answer the bell
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chainpulled = False
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while ipmiq:
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cval = ipmiq.popleft()
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if hasattr(cval[0], '__call__'):
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if isinstance(cval[1], tuple):
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rv = cval[0](*cval[1])
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elif isinstance(cval[1], dict):
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rv = cval[0](**cval[1])
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if len(cval) > 2:
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cval[2](rv)
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def get_conn_params(node, configdata):
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if 'secret.ipmiuser' in configdata:
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username = configdata['secret.ipmiuser']['value']
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elif 'secret.managementuser' in configdata:
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username = configdata['secret.managementuser']['value']
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else:
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username = 'USERID'
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if 'secret.ipmipassphrase' in configdata:
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passphrase = configdata['secret.ipmipassphrase']['value']
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elif 'secret.managementpassphrase' in configdata:
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passphrase = configdata['secret.managementpassphrase']['value']
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else:
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passphrase = 'PASSW0RD' # for lack of a better guess
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if 'hardwaremanagement.manager' in configdata:
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bmc = configdata['hardwaremanagement.manager']['value']
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else:
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bmc = node
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if 'secret.ipmikg' in configdata:
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kg = configdata['secret.ipmikg']['value']
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else:
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kg = passphrase
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#TODO(jbjohnso): check if the end has some number after a : without []
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#for non default port
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return {
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'username': username,
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'passphrase': passphrase,
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'kg': kg,
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'bmc': bmc,
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'port': 623,
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}
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class Console(object):
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def __init__(self, node, config):
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crypt = config.decrypt
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config.decrypt = True
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configdata = config.get_node_attributes([node],
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['secret.ipmiuser', 'secret.ipmipassphrase',
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'secret.managementuser', 'secret.managementpassphrase',
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'hardwaremanagement.manager'])
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connparams = get_conn_params(node, configdata[node])
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self.username = connparams['username']
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self.password = connparams['passphrase']
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self.kg = connparams['kg']
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self.bmc = connparams['bmc']
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self.port = connparams['port']
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# Cannot actually create console until 'connect', when we get callback
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def connect(self,callback):
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global _ipmithread
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global pullchain
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global ipmisessions
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global chainpulled
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try:
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ipmisession = ipmisessions[(self.bmc, self.port)]
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except KeyError:
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ipmisession = None
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if _ipmithread is None:
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pullchain = os.pipe()
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_ipmithread = eventlet.spawn(_ipmi_evtloop)
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self.solconnection = None
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ipmiq.append((console.Console,{'bmc': self.bmc,
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'port': self.port,
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'userid': self.username,
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'password': self.password,
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'kg': self.kg,
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'force': True,
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'ipmisession': ipmisession,
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'iohandler': callback}, self.got_consobject))
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if not chainpulled:
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chainpulled = True
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os.write(pullchain[1],'1')
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while self.solconnection is None:
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wait_on_ipmi()
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if ipmisession is None:
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ipmisessions[(self.bmc, self.port)] = \
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self.solconnection.ipmi_session
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def got_consobject(self, solconnection):
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self.solconnection = solconnection
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def write(self, data):
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global chainpulled
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ipmiq.append((self.solconnection.send_data, (data,)))
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if not chainpulled:
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chainpulled = True
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os.write(pullchain[1],'1')
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#self.solconnection.send_data(data)
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def wait_for_data(self, timeout=600):
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"""Wait for some network event.
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This is currently not guaranteed to actually have data when
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return. This is supposed to be something more appropriate
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than sleep(0), but only marginally so.
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"""
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# reason for this is that we currently nicely pass through the callback
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# straight to ipmi library. To implement this accurately, easiest path
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# would be to add a layer through the callback. IMO there isn't enough
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# value in assuring data coming back to bother with making the stack
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# taller than it has to be
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global tmptimeout
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global chainpulled
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tmptimeout = timeout
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if not chainpulled:
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chainpulled=True
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os.write(pullchain[1],'1')
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eventlet.sleep(0.001)
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wait_on_ipmi()
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#TODO: a channel for the ipmithread to tug back instead of busy wait
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#while tmptimeout is not None:
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# eventlet.sleep(0)
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#console.session.Session.wait_for_rsp(timeout=timeout)
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class IpmiIterator(object):
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def __init__(self, operator, nodes, element, cfg):
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configdata = cfg.get_node_attributes(nodes,
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['secret.ipmiuser', 'secret.ipmipassphrase',
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'secret.managementuser', 'secret.managementpassphrase',
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'hardwaremanagement.manager'])
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for node in nodes:
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IpmiHandler(operator, node, element, configdata)
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def __iter__(self):
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return self
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def next(self):
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pass
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class IpmiHandler(object):
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def __iter__():
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return self
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def __init__(self, operation, node, element, cfd):
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self.cfg = cfd[node]
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self.node = node
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self.element = element
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self.op = operation
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connparams = get_conn_params(node, self.cfg)
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self.ipmicmd = None
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try:
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ipmisession = ipmisessions[(self.bmc, self.port)]
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except KeyError:
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ipmisession = None
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ipmiq.append((ipmicommand.Command,{'bmc': connparams['bmc'],
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'userid': connparams['username'],
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'password': connparams['passphrase'],
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'kg': connparams['kg'],
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'port': connparams['port'],
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'onlogon': self.handle_request,
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'ipmisession': ipmisession},
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got_ipmicmd))
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while self.ipmicmd == None:
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wait_on_ipmi()
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if ipmisession is None:
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ipmisessions[(self.bmc, self.port)] = self.ipmicmd.ipmi_session
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def got_ipmicmd(self, ipmicmd):
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self.ipmicmd = ipmicmd
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def call_ipmicmd(self, function, *args):
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self.lastrsp = None
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ipmiq.append((function, args, self.got_rsp))
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while self.lastrsp is None:
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wait_on_ipmi()
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return self.lastrsp
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def got_rsp(self, response):
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self.lastrsp = response
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def handle_request(self, response):
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if 'error' in response:
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raise Exception(response['error'])
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if self.element == 'power/state':
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if 'read' == self.op:
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rsp = self.call_ipmi(self.ipmicmd.get_power)
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print(rsp)
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def create(nodes, element, configmanager):
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if element == '_console/session':
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if len(nodes) > 1:
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raise Exception("_console/session does not support multiple nodes")
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return Console(nodes[0], configmanager)
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else:
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raise Exception(
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"TODO(jbjohnso): ipmi api implementation of %s" % element)
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def retrieve(nodes, element, configmanager):
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pass
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