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