import config
import database
import time
import mailer
from unified_model import cmpCategoryVal
import sys
import emailTxt
import string

from rt import is_host_in_rt_tickets
import plc

def get_ticket_id(record):
	if 'ticket_id' in record and record['ticket_id'] is not "" and record['ticket_id'] is not None:
		return record['ticket_id']
	elif 		'found_rt_ticket' in record and \
		 record['found_rt_ticket'] is not "" and \
		 record['found_rt_ticket'] is not None:
		return record['found_rt_ticket']
	else:
		return None

# Time to enforce policy
POLSLEEP = 7200

# Where to email the summary
SUMTO = "soltesz@cs.princeton.edu"
TECHEMAIL="tech-%s@sites.planet-lab.org"
PIEMAIL="pi-%s@sites.planet-lab.org"
SLICEMAIL="%s@slices.planet-lab.org"
PLCEMAIL="support@planet-lab.org"

#Thresholds (DAYS)
SPERMIN = 60
SPERHOUR = 60*60
SPERDAY = 86400
PITHRESH = 7 * SPERDAY
SLICETHRESH = 7 * SPERDAY
# Days before attempting rins again
RINSTHRESH = 5 * SPERDAY

# Days before calling the node dead.
DEADTHRESH = 30 * SPERDAY
# Minimum number of nodes up before squeezing
MINUP = 2

TECH=1
PI=2
USER=4
ADMIN=8

from unified_model import *

class Merge:
	def __init__(self, l_merge):
		self.merge_list = l_merge

		# the hostname to loginbase mapping
		self.plcdb_hn2lb = database.dbLoad("plcdb_hn2lb")

		# Previous actions taken on nodes.
		self.act_all = database.if_cached_else(1, "act_all", lambda : {})
		self.findbad = database.if_cached_else(1, "findbad", lambda : {})

		self.cache_all = database.if_cached_else(1, "act_all", lambda : {})
		self.sickdb = {}
		self.mergedb = {}

	def run(self):
		# populate sickdb
		self.accumSickSites()
		# read data from findbad and act_all
		self.mergeActionsAndBadDB()
		# pass node_records to RT
		return self.getRecordList()

	def accumSickSites(self):
		"""
		Take all nodes, from l_diagnose, look them up in the act_all database, 
		and insert them into sickdb[] as:

			sickdb[loginbase][nodename] = fb_record
		"""
		# look at all problems reported by findbad
		l_nodes = self.findbad['nodes'].keys()
		count = 0
		for nodename in l_nodes:
			if nodename not in self.merge_list:
				continue		# skip this node, since it's not wanted

			count += 1
			loginbase = self.plcdb_hn2lb[nodename]
			values = self.findbad['nodes'][nodename]['values']

			fb_record = {}
			fb_record['nodename'] = nodename
			try:
				fb_record['category'] = values['category']
			except:
				print values
				print nodename
				print self.findbad['nodes'][nodename]
				count -= 1
				continue
			fb_record['state'] = values['state']
			fb_record['comonstats'] = values['comonstats']
			fb_record['plcnode'] = values['plcnode']
			fb_record['kernel'] = self.getKernel(values['kernel'])
			fb_record['stage'] = "findbad"
			fb_record['message'] = None
			fb_record['bootcd'] = values['bootcd']
			fb_record['args'] = None
			fb_record['info'] = None
			fb_record['time'] = time.time()
			fb_record['date_created'] = time.time()

			if loginbase not in self.sickdb:
				self.sickdb[loginbase] = {}

			self.sickdb[loginbase][nodename] = fb_record

		print "Found %d nodes" % count

	def getKernel(self, unamestr):
		s = unamestr.split()
		if len(s) > 2:
			return s[2]
		else:
			return ""

	def mergeActionsAndBadDB(self):	
		"""
		- Look at the sick node_records as reported in findbad, 
		- Then look at the node_records in act_all.  

		There are four cases:
		1) Problem in findbad, no problem in act_all
			this ok, b/c it just means it's a new problem
		2) Problem in findbad, problem in act_all
			-Did the problem get better or worse?  
				-If Same, or Worse, then continue looking for open tickets.
				-If Better, or No problem, then "back-off" penalties.
					This judgement may need to wait until 'Diagnose()'

		3) No problem in findbad, problem in act_all
			The the node is operational again according to Findbad()

		4) No problem in findbad, no problem in act_all
			There won't be a record in either db, so there's no code.
		"""

		sorted_sites = self.sickdb.keys()
		sorted_sites.sort()
		# look at all problems reported by findbad
		for loginbase in sorted_sites:
			d_fb_nodes = self.sickdb[loginbase]
			sorted_nodes = d_fb_nodes.keys()
			sorted_nodes.sort()
			for nodename in sorted_nodes:
				fb_record = self.sickdb[loginbase][nodename]
				x = fb_record
				if loginbase not in self.mergedb:
					self.mergedb[loginbase] = {}

				# take the info either from act_all or fb-record.
				# if node not in act_all
				# 	then take it from fbrecord, obviously.
				# else node in act_all
				#   if act_all == 0 length (no previous records)
				#		then take it from fbrecord.
				#   else
				# 	    take it from act_all.
				#   

				# We must compare findbad state with act_all state
				if nodename not in self.act_all:
					# 1) ok, b/c it's a new problem. set ticket_id to null
					self.mergedb[loginbase][nodename] = {} 
					self.mergedb[loginbase][nodename].update(x)
					self.mergedb[loginbase][nodename]['ticket_id'] = ""
					self.mergedb[loginbase][nodename]['prev_category'] = "NORECORD" 
				else: 
					if len(self.act_all[nodename]) == 0:
						self.mergedb[loginbase][nodename] = {} 
						self.mergedb[loginbase][nodename].update(x)
						self.mergedb[loginbase][nodename]['ticket_id'] = ""
						self.mergedb[loginbase][nodename]['prev_category'] = "NORECORD" 
					else:
						y = self.act_all[nodename][0]
						y['prev_category'] = y['category']

						self.mergedb[loginbase][nodename] = {}
						self.mergedb[loginbase][nodename].update(y)
						self.mergedb[loginbase][nodename]['comonstats'] = x['comonstats']
						self.mergedb[loginbase][nodename]['category']   = x['category']
						self.mergedb[loginbase][nodename]['state'] = x['state']
						self.mergedb[loginbase][nodename]['kernel']=x['kernel']
						self.mergedb[loginbase][nodename]['bootcd']=x['bootcd']
						self.mergedb[loginbase][nodename]['plcnode']=x['plcnode']
						ticket = get_ticket_id(self.mergedb[loginbase][nodename])
						self.mergedb[loginbase][nodename]['rt'] = mailer.getTicketStatus(ticket)

					# delete the entry from cache_all to keep it out of case 3)
					del self.cache_all[nodename]

		# 3) nodes that remin in cache_all were not identified by findbad.
		# 	 Do we keep them or not?
		#   NOTE: i think that since the categories are performed before this
		#   		step now, and by a monitor-controlled agent.

		return

	def getRecordList(self):
		sorted_sites = self.mergedb.keys()
		sorted_sites.sort()
		ret_list = []

		# look at all problems reported by merge
		for loginbase in sorted_sites:
			d_merge_nodes = self.mergedb[loginbase]
			for nodename in d_merge_nodes.keys():
				record = self.mergedb[loginbase][nodename]
				ret_list.append(record)

		return ret_list

class RT:
	def __init__(self, record_list, dbTickets, l_ticket_blacklist, target = None): 
		# Time of last update of ticket DB
		self.record_list = record_list
		self.dbTickets = dbTickets
		self.lastupdated = 0
		self.l_ticket_blacklist = l_ticket_blacklist
		self.tickets = {}

	def run(self):
		self.count = 0
		ret_list = []
		for diag_node in self.record_list:
			if diag_node != None: 
				host = diag_node['nodename']
				(b_host_inticket, r_ticket) = is_host_in_rt_tickets(host, \
													self.l_ticket_blacklist, \
													self.dbTickets)
				diag_node['found_rt_ticket'] = None
				if b_host_inticket:
					#logger.debug("RT: found tickets for %s" %host)
					diag_node['found_rt_ticket'] = r_ticket['ticket_id']

				else:
					if r_ticket is not None:
						print "Ignoring ticket %s" % r_ticket['ticket_id']
						# TODO: why do i return the ticket id for a
						# 		blacklisted ticket id?
						#diag_node['found_rt_ticket'] = r_ticket['ticket_id']
					self.count = self.count + 1

				ret_list.append(diag_node)

		#print "RT processed %d nodes with noticket" % self.count
		#logger.debug("RT filtered %d noticket nodes" % self.count)
		return ret_list

class Diagnose:
	def __init__(self, record_list):
		self.record_list = record_list
		self.plcdb_hn2lb = database.dbLoad("plcdb_hn2lb")
		self.findbad = database.if_cached_else(1, "findbad", lambda : {})

		self.diagnose_in = {}
		self.diagnose_out = {}

	def run(self):
		self.accumSickSites()

		#logger.debug("Accumulated %d sick sites" % len(self.diagnose_in.keys()))

		try:
			stats = self.diagnoseAll()
		except Exception, err:
			print "----------------"
			import traceback
			print traceback.print_exc()
			from nodecommon import email_exception
			email_exception()
			print err
			#if config.policysavedb:
			sys.exit(1)

		#print_stats("sites_observed", stats)
		#print_stats("sites_diagnosed", stats)
		#print_stats("nodes_diagnosed", stats)

		return self.diagnose_out

	def accumSickSites(self):
		"""
		Take all nodes, from l_diagnose, look them up in the diagnose_out database, 
		and insert them into diagnose_in[] as:

			diagnose_in[loginbase] = [diag_node1, diag_node2, ...]
		"""
		for node_record in self.record_list:

			nodename = node_record['nodename']
			loginbase = self.plcdb_hn2lb[nodename]

			if loginbase not in self.diagnose_in:
				self.diagnose_in[loginbase] = {}

			self.diagnose_in[loginbase][nodename] = node_record

		return

	def diagnoseAll(self):
		i_sites_observed = 0
		i_sites_diagnosed = 0
		i_nodes_diagnosed = 0
		i_nodes_actedon = 0
		i_sites_emailed = 0
		l_allsites = []

		sorted_sites = self.diagnose_in.keys()
		sorted_sites.sort()
		self.diagnose_out= {}
		for loginbase in sorted_sites:
			l_allsites += [loginbase]

			d_diag_nodes = self.diagnose_in[loginbase]
			d_act_records = self.__diagnoseSite(loginbase, d_diag_nodes)
			# store records in diagnose_out, for saving later.
			self.diagnose_out.update(d_act_records)
			
			if len(d_act_records[loginbase]['nodes'].keys()) > 0:
				i_nodes_diagnosed += (len(d_act_records[loginbase]['nodes'].keys()))
				i_sites_diagnosed += 1
			i_sites_observed += 1

		return {'sites_observed': i_sites_observed, 
				'sites_diagnosed': i_sites_diagnosed, 
				'nodes_diagnosed': i_nodes_diagnosed, 
				'allsites':l_allsites}

		pass
		
	def __getDaysDown(self, diag_record, nodename):
		daysdown = -1
		if diag_record['comonstats']['sshstatus'] != "null":
			daysdown = int(diag_record['comonstats']['sshstatus']) // (60*60*24)
		elif diag_record['comonstats']['lastcotop'] != "null":
			daysdown = int(diag_record['comonstats']['lastcotop']) // (60*60*24)
		else:
			now = time.time()
			last_contact = diag_record['plcnode']['last_contact']
			if last_contact == None:
				# the node has never been up, so give it a break
				daysdown = -1
			else:
				diff = now - last_contact
				daysdown = diff // (60*60*24)
		return daysdown

	def __getStrDaysDown(self, diag_record, nodename):
		daysdown = self.__getDaysDown(diag_record, nodename)
		if daysdown > 0:
			return "(%d days down)"%daysdown
		else:
			return "Unknown number of days"

	def __getCDVersion(self, diag_record, nodename):
		cdversion = ""
		#print "Getting kernel for: %s" % diag_record['nodename']
		cdversion = diag_record['kernel']
		return cdversion

	def __diagnoseSite(self, loginbase, d_diag_nodes):
		"""
		d_diag_nodes are diagnose_in entries.
		"""
		d_diag_site = {loginbase : { 'config' : 
												{'squeeze': False,
												 'email': False
												}, 
									'nodes': {}
									}
					   }
		sorted_nodes = d_diag_nodes.keys()
		sorted_nodes.sort()
		for nodename in sorted_nodes:
			node_record = d_diag_nodes[nodename]
			diag_record = self.__diagnoseNode(loginbase, node_record)

			if diag_record != None:
				d_diag_site[loginbase]['nodes'][nodename] = diag_record

				# NOTE: improvement means, we need to act/squeeze and email.
				#print "DIAG_RECORD", diag_record
				if 'monitor-end-record' in diag_record['stage'] or \
				   'nmreset' in diag_record['stage']:
				#	print "resetting loginbase!" 
					d_diag_site[loginbase]['config']['squeeze'] = True
					d_diag_site[loginbase]['config']['email'] = True
				#else:
				#	print "NO IMPROVEMENT!!!!"
			else:
				pass # there is nothing to do for this node.

		# NOTE: these settings can be overridden by command line arguments,
		#       or the state of a record, i.e. if already in RT's Support Queue.
		pf = PersistFlags(loginbase, 1, db='site_persistflags')
		nodes_up = pf.nodes_up
		if nodes_up < MINUP:
			d_diag_site[loginbase]['config']['squeeze'] = True

		max_slices = self.getMaxSlices(loginbase)
		num_nodes = pf.nodes_total #self.getNumNodes(loginbase)
		# NOTE: when max_slices == 0, this is either a new site (the old way)
		#       or an old disabled site from previous monitor (before site['enabled'])
		if nodes_up < num_nodes and max_slices != 0:
			d_diag_site[loginbase]['config']['email'] = True

		if len(d_diag_site[loginbase]['nodes'].keys()) > 0:
			print "SITE: %20s : %d nodes up, at most" % (loginbase, nodes_up)

		return d_diag_site

	def diagRecordByCategory(self, node_record):
		nodename = node_record['nodename']
		category = node_record['category']
		state    = node_record['state']
		loginbase = self.plcdb_hn2lb[nodename]
		diag_record = None

		if  "ERROR" in category:	# i.e. "DOWN"
			diag_record = {}
			diag_record.update(node_record)
			daysdown = self.__getDaysDown(diag_record, nodename) 
			#if daysdown < 7:
			#	format = "DIAG: %20s : %-40s Down only %s days  NOTHING DONE"
			#	print format % (loginbase, nodename, daysdown)
			#	return None

			s_daysdown = self.__getStrDaysDown(diag_record, nodename)
			diag_record['message'] = emailTxt.mailtxt.newdown
			diag_record['args'] = {'nodename': nodename}
			diag_record['info'] = (nodename, s_daysdown, "")

			#if 'reboot_node_failed' in node_record:
			#	# there was a previous attempt to use the PCU.
			#	if node_record['reboot_node_failed'] == False:
			#		# then the last attempt apparently, succeeded.
			#		# But, the category is still 'ERROR'.  Therefore, the
			#		# PCU-to-Node mapping is broken.
			#		#print "Setting message for ERROR node to PCU2NodeMapping: %s" % nodename
			#		diag_record['message'] = emailTxt.mailtxt.pcutonodemapping
			#		diag_record['email_pcu'] = True

			if diag_record['ticket_id'] == "":
				diag_record['log'] = "DOWN: %20s : %-40s == %20s %s" % \
					(loginbase, nodename, diag_record['info'][1:], diag_record['found_rt_ticket'])
			else:
				diag_record['log'] = "DOWN: %20s : %-40s == %20s %s" % \
					(loginbase, nodename, diag_record['info'][1:], diag_record['ticket_id'])

		elif "OLDBOOTCD" in category:
			# V2 boot cds as determined by findbad
			s_daysdown = self.__getStrDaysDown(node_record, nodename)
			s_cdversion = self.__getCDVersion(node_record, nodename)
			diag_record = {}
			diag_record.update(node_record)
			#if "2.4" in diag_record['kernel'] or "v2" in diag_record['bootcd']:
			diag_record['message'] = emailTxt.mailtxt.newbootcd
			diag_record['args'] = {'nodename': nodename}
			diag_record['info'] = (nodename, s_daysdown, s_cdversion)
			if diag_record['ticket_id'] == "":
				diag_record['log'] = "BTCD: %20s : %-40s == %20s %20s %s" % \
									(loginbase, nodename, diag_record['kernel'], 
									 diag_record['bootcd'], diag_record['found_rt_ticket'])
			else:
				diag_record['log'] = "BTCD: %20s : %-40s == %20s %20s %s" % \
									(loginbase, nodename, diag_record['kernel'], 
									 diag_record['bootcd'], diag_record['ticket_id'])

		elif "PROD" in category:
			if "DEBUG" in state:
				# Not sure what to do with these yet.  Probably need to
				# reboot, and email.
				print "DEBG: %20s : %-40s  NOTHING DONE" % (loginbase, nodename)
				return None
			elif "BOOT" in state:
				# no action needed.
				# TODO: remove penalties, if any are applied.
				now = time.time()
				last_contact = node_record['plcnode']['last_contact']
				if last_contact == None:
					time_diff = 0
				else:
					time_diff = now - last_contact;

				if 'improvement' in node_record['stage']:
					# then we need to pass this on to 'action'
					diag_record = {}
					diag_record.update(node_record)
					diag_record['message'] = emailTxt.mailtxt.newthankyou
					diag_record['args'] = {'nodename': nodename}
					diag_record['info'] = (nodename, node_record['prev_category'], 
													 node_record['category'])
					#if 'email_pcu' in diag_record:
					#	if diag_record['email_pcu']:
					#		# previously, the pcu failed to reboot, so send
					#		# email. Now, reset these values to try the reboot
					#		# again.
					#		diag_record['email_pcu'] = False
					#		del diag_record['reboot_node_failed']

					if diag_record['ticket_id'] == "":
						diag_record['log'] = "IMPR: %20s : %-40s == %20s %20s %s %s" % \
									(loginbase, nodename, diag_record['stage'], 
									 state, category, diag_record['found_rt_ticket'])
					else:
						diag_record['log'] = "IMPR: %20s : %-40s == %20s %20s %s %s" % \
									(loginbase, nodename, diag_record['stage'], 
									 state, category, diag_record['ticket_id'])
					return diag_record
				#elif time_diff >= 6*SPERHOUR:
				#	# heartbeat is older than 30 min.
				#	# then reset NM.
				#	#print "Possible NM problem!! %s - %s = %s" % (now, last_contact, time_diff)
				#	diag_record = {}
				#	diag_record.update(node_record)
				#	diag_record['message'] = emailTxt.mailtxt.NMReset
				#	diag_record['args'] = {'nodename': nodename}
				#	diag_record['stage'] = "nmreset"
				#	diag_record['info'] = (nodename, 
				#							node_record['prev_category'], 
				#							node_record['category'])
				#	if diag_record['ticket_id'] == "":
				#		diag_record['log'] = "NM  : %20s : %-40s == %20s %20s %s %s" % \
				#					(loginbase, nodename, diag_record['stage'], 
				#					 state, category, diag_record['found_rt_ticket'])
				#	else:
				#		diag_record['log'] = "NM  : %20s : %-40s == %20s" % \
				#					(loginbase, nodename, diag_record['stage'])
#
#					return diag_record
				else:
					return None
			else:
				# unknown
				pass
		elif "ALPHA"    in category:
			pass
		elif "clock_drift" in category:
			pass
		elif "dns"    in category:
			pass
		elif "filerw"    in category:
			pass
		else:
			print "Unknown category!!!! %s" % category
			sys.exit(1)

		return diag_record

	def __diagnoseNode(self, loginbase, node_record):
		# TODO: change the format of the hostname in this 
		#		record to something more natural.
		nodename 	  	= node_record['nodename']
		category 	  	= node_record['category']
		prev_category 	= node_record['prev_category']
		state    	  	= node_record['state']
		#if 'prev_category' in node_record:
		#	prev_category = node_record['prev_category']
		#else:
		#	prev_category = "ERROR"
		if node_record['prev_category'] != "NORECORD":
		
			val = cmpCategoryVal(category, prev_category)
			print "%s went from %s -> %s" % (nodename, prev_category, category)
			if prev_category == "UNKNOWN" and category == "PROD":
				# sending too many thank you notes to people that don't
				# deserve them.
				# TODO: not sure what effect this will have on the node
				# status, though...
				return None

			if val == 1:
				# improved
				if node_record['ticket_id'] == "" or node_record['ticket_id'] == None:
					print "closing record with no ticket: ", node_record['nodename']
					node_record['action'] = ['close_rt']
					node_record['message'] = None
					node_record['stage'] = 'monitor-end-record'
					return node_record
				else:
					node_record['stage'] = 'improvement'

				#if 'monitor-end-record' in node_record['stage']:
				#	# just ignore it if it's already ended.
				#	# otherwise, the status should be worse, and we won't get
				#	# here.
				#	print "monitor-end-record: ignoring ", node_record['nodename']
				#	return None
#
#					#return None
			elif val == -1:
				# current category is worse than previous, carry on
				pass
			else:
				#values are equal, carry on.
				#print "why are we here?"
				pass

		if 'rt' in node_record and 'Status' in node_record['rt']:
			if node_record['stage'] == 'ticket_waitforever':
				if 'resolved' in node_record['rt']['Status']:
					print "ending waitforever record for: ", node_record['nodename']
					node_record['action'] = ['noop']
					node_record['message'] = None
					node_record['stage'] = 'monitor-end-record'
					print "oldlog: %s" % node_record['log'],
					print "%15s" % node_record['action']
					return node_record
				if 'new' in node_record['rt']['Status'] and \
					'Queue' in node_record['rt'] and \
					'Monitor' in node_record['rt']['Queue']:

					print "RESETTING stage to findbad"
					node_record['stage'] = 'findbad'
			
		#### COMPARE category and prev_category
		# if not_equal
		#	then assign a stage based on relative priorities
		# else equal
		#	then check category for stats.
		diag_record = self.diagRecordByCategory(node_record)
		if diag_record == None:
			#print "diag_record == None"
			return None

		#### found_RT_ticket
		# TODO: need to record time found, and maybe add a stage for acting on it...
		# NOTE: after found, if the support ticket is resolved, the block is
		# 		not removed. How to remove the block on this?

		#if 'found_rt_ticket' in diag_record and \
		#	diag_record['found_rt_ticket'] is not None:
		#	if diag_record['stage'] is not 'improvement':
		#		diag_record['stage'] = 'ticket_waitforever'
				
		current_time = time.time()
		# take off four days, for the delay that database caused.
		# TODO: generalize delays at PLC, and prevent enforcement when there
		# 		have been no emails.
		# NOTE: 7*SPERDAY exists to offset the 'bad week'
		#delta = current_time - diag_record['time'] - 7*SPERDAY
		delta = current_time - diag_record['time']

		message = diag_record['message']
		act_record = {}
		act_record.update(diag_record)

		#### DIAGNOSE STAGES 
		if   'findbad' in diag_record['stage']:
			# The node is bad, and there's no previous record of it.
			act_record['email'] = TECH
			act_record['action'] = ['noop']
			act_record['message'] = message[0]
			act_record['stage'] = 'stage_actinoneweek'

		elif 'nmreset' in diag_record['stage']:
			act_record['email']  = ADMIN 
			act_record['action'] = ['reset_nodemanager']
			act_record['message'] = message[0]
			act_record['stage']  = 'nmreset'
			return None

		elif 'reboot_node' in diag_record['stage']:
			act_record['email'] = TECH
			act_record['action'] = ['noop']
			act_record['message'] = message[0]
			act_record['stage'] = 'stage_actinoneweek'
			
		elif 'improvement' in diag_record['stage']:
			# - backoff previous squeeze actions (slice suspend, nocreate)
			# TODO: add a backoff_squeeze section... Needs to runthrough
			print "backing off of %s" % nodename
			act_record['action'] = ['close_rt']
			act_record['message'] = message[0]
			act_record['stage'] = 'monitor-end-record'

		elif 'actinoneweek' in diag_record['stage']:
			if delta >= 7 * SPERDAY: 
				act_record['email'] = TECH | PI
				act_record['stage'] = 'stage_actintwoweeks'
				act_record['message'] = message[1]
				act_record['action'] = ['nocreate' ]
				act_record['time'] = current_time		# reset clock for waitforever
			elif delta >= 3* SPERDAY and not 'second-mail-at-oneweek' in act_record:
				act_record['email'] = TECH 
				act_record['message'] = message[0]
				act_record['action'] = ['sendmailagain-waitforoneweekaction' ]
				act_record['second-mail-at-oneweek'] = True
			else:
				act_record['message'] = None
				act_record['action'] = ['waitforoneweekaction' ]
				print "ignoring this record for: %s" % act_record['nodename']
				return None 			# don't send if there's no action

		elif 'actintwoweeks' in diag_record['stage']:
			if delta >= 7 * SPERDAY:
				act_record['email'] = TECH | PI | USER
				act_record['stage'] = 'stage_waitforever'
				act_record['message'] = message[2]
				act_record['action'] = ['suspendslices']
				act_record['time'] = current_time		# reset clock for waitforever
			elif delta >= 3* SPERDAY and not 'second-mail-at-twoweeks' in act_record:
				act_record['email'] = TECH | PI
				act_record['message'] = message[1]
				act_record['action'] = ['sendmailagain-waitfortwoweeksaction' ]
				act_record['second-mail-at-twoweeks'] = True
			else:
				act_record['message'] = None
				act_record['action'] = ['waitfortwoweeksaction']
				return None 			# don't send if there's no action

		elif 'ticket_waitforever' in diag_record['stage']:
			act_record['email'] = TECH
			if 'first-found' not in act_record:
				act_record['first-found'] = True
				act_record['log'] += " firstfound"
				act_record['action'] = ['ticket_waitforever']
				act_record['message'] = None
				act_record['time'] = current_time
			else:
				if delta >= 7*SPERDAY:
					act_record['action'] = ['ticket_waitforever']
					act_record['message'] = None
					act_record['time'] = current_time		# reset clock
				else:
					act_record['action'] = ['ticket_waitforever']
					act_record['message'] = None
					return None

		elif 'waitforever' in diag_record['stage']:
			# more than 3 days since last action
			# TODO: send only on weekdays.
			# NOTE: expects that 'time' has been reset before entering waitforever stage
			if delta >= 3*SPERDAY:
				act_record['action'] = ['email-againwaitforever']
				act_record['message'] = message[2]
				act_record['time'] = current_time		# reset clock
			else:
				act_record['action'] = ['waitforever']
				act_record['message'] = None
				return None 			# don't send if there's no action

		else:
			# There is no action to be taken, possibly b/c the stage has
			# already been performed, but diagnose picked it up again.
			# two cases, 
			#	1. stage is unknown, or 
			#	2. delta is not big enough to bump it to the next stage.
			# TODO: figure out which. for now assume 2.
			print "UNKNOWN stage for %s; nothing done" % nodename
			act_record['action'] = ['unknown']
			act_record['message'] = message[0]

			act_record['email'] = TECH
			act_record['action'] = ['noop']
			act_record['message'] = message[0]
			act_record['stage'] = 'stage_actinoneweek'
			act_record['time'] = current_time		# reset clock
			#print "Exiting..."
			#return None
			#sys.exit(1)

		print "%s" % act_record['log'],
		print "%15s" % act_record['action']
		return act_record

	def getMaxSlices(self, loginbase):
		# if sickdb has a loginbase, then it will have at least one node.
		site_stats = None

		for nodename in self.diagnose_in[loginbase].keys():
			if nodename in self.findbad['nodes']:
				site_stats = self.findbad['nodes'][nodename]['values']['plcsite']
				break

		if site_stats == None:
			raise Exception, "loginbase with no nodes in findbad"
		else:
			return site_stats['max_slices']

	def getNumNodes(self, loginbase):
		# if sickdb has a loginbase, then it will have at least one node.
		site_stats = None

		for nodename in self.diagnose_in[loginbase].keys():
			if nodename in self.findbad['nodes']:
				site_stats = self.findbad['nodes'][nodename]['values']['plcsite']
				break

		if site_stats == None:
			raise Exception, "loginbase with no nodes in findbad"
		else:
			return site_stats['num_nodes']

	"""
	Returns number of up nodes as the total number *NOT* in act_all with a
	stage other than 'steady-state' .
	"""
	def getUpAtSite(self, loginbase, d_diag_site):
		# TODO: THIS DOESN"T WORK!!! it misses all the 'debug' state nodes
		# 		that aren't recorded yet.

		numnodes = self.getNumNodes(loginbase)
		# NOTE: assume nodes we have no record of are ok. (too conservative)
		# TODO: make the 'up' value more representative
		up = numnodes
		for nodename in d_diag_site[loginbase]['nodes'].keys():

			rec = d_diag_site[loginbase]['nodes'][nodename]
			if rec['stage'] != 'monitor-end-record':
				up -= 1
			else:
				pass # the node is assumed to be up.

		#if up != numnodes:
		#	print "ERROR: %s total nodes up and down != %d" % (loginbase, numnodes)

		return up

def close_rt_backoff(args):
	if 'ticket_id' in args and (args['ticket_id'] != "" and args['ticket_id'] != None):
		mailer.closeTicketViaRT(args['ticket_id'], 
								"Ticket CLOSED automatically by SiteAssist.")
		plc.enableSlices(args['hostname'])
		plc.enableSliceCreation(args['hostname'])
	return

def reboot_node(args):
	host = args['hostname']
	return reboot.reboot_policy(host, True, config.debug)

class Action:
	def __init__(self, diagnose_out):
		# the hostname to loginbase mapping
		self.plcdb_hn2lb = database.dbLoad("plcdb_hn2lb")

		# Actions to take.
		self.diagnose_db = diagnose_out
		# Actions taken.
		self.act_all   = database.if_cached_else(1, "act_all", lambda : {})

		# A dict of actions to specific functions. PICKLE doesnt' like lambdas.
		self.actions = {}
		self.actions['suspendslices'] = lambda args: plc.suspendSlices(args['hostname'])
		self.actions['nocreate'] = lambda args: plc.removeSliceCreation(args['hostname'])
		self.actions['close_rt'] = lambda args: close_rt_backoff(args)
		self.actions['rins'] = lambda args: plc.nodeBootState(args['hostname'], "rins")	
		self.actions['noop'] = lambda args: args
		self.actions['reboot_node'] = lambda args: reboot_node(args)
		self.actions['reset_nodemanager'] = lambda args: args # reset_nodemanager(args)

		self.actions['ticket_waitforever'] = lambda args: args
		self.actions['waitforever'] = lambda args: args
		self.actions['unknown'] = lambda args: args
		self.actions['waitforoneweekaction'] = lambda args: args
		self.actions['waitfortwoweeksaction'] = lambda args: args
		self.actions['sendmailagain-waitforoneweekaction'] = lambda args: args
		self.actions['sendmailagain-waitfortwoweeksaction'] = lambda args: args
		self.actions['email-againwaitforever'] = lambda args: args
		self.actions['email-againticket_waitforever'] = lambda args: args
				
		self.sickdb = {}

	def run(self):
		self.accumSites()
		#logger.debug("Accumulated %d sick sites" % len(self.sickdb.keys()))

		try:
			stats = self.analyseSites()
		except Exception, err:
			print "----------------"
			import traceback
			print traceback.print_exc()
			from nodecommon import email_exception
			email_exception()
			print err
			if config.policysavedb:
				print "Saving Databases... act_all"
				database.dbDump("act_all", self.act_all)
				database.dbDump("diagnose_out", self.diagnose_db)
			sys.exit(1)

		#print_stats("sites_observed", stats)
		#print_stats("sites_diagnosed", stats)
		#print_stats("nodes_diagnosed", stats)
		self.print_stats("sites_emailed", stats)
		#print_stats("nodes_actedon", stats)
		print string.join(stats['allsites'], ",")

		if config.policysavedb:
			print "Saving Databases... act_all"
			#database.dbDump("policy.eventlog", self.eventlog)
			# TODO: remove 'diagnose_out', 
			#	or at least the entries that were acted on.
			database.dbDump("act_all", self.act_all)
			database.dbDump("diagnose_out", self.diagnose_db)

	def accumSites(self):
		"""
		Take all nodes, from l_action, look them up in the diagnose_db database, 
		and insert them into sickdb[] as:

		This way only the given l_action nodes will be acted on regardless
		of how many from diagnose_db are available.

			sickdb[loginbase][nodename] = diag_record
		"""
		self.sickdb = self.diagnose_db

	def __emailSite(self, loginbase, roles, message, args):
		"""
		loginbase is the unique site abbreviation, prepended to slice names.
		roles contains TECH, PI, USER roles, and derive email aliases.
		record contains {'message': [<subj>,<body>], 'args': {...}} 
		"""
		ticket_id = 0
		args.update({'loginbase':loginbase})

		if not config.mail and not config.debug and config.bcc:
			roles = ADMIN
		if config.mail and config.debug:
			roles = ADMIN

		# build targets
		contacts = []
		if ADMIN & roles:
			contacts += [config.email]
		if TECH & roles:
			#contacts += [TECHEMAIL % loginbase]
			contacts += plc.getTechEmails(loginbase)
		if PI & roles:
			#contacts += [PIEMAIL % loginbase]
			contacts += plc.getPIEmails(loginbase)
		if USER & roles:
			contacts += plc.getSliceUserEmails(loginbase)
			slices = plc.slices(loginbase)
			if len(slices) >= 1:
				print "SLIC: %20s : %d slices" % (loginbase, len(slices))
			else:
				print "SLIC: %20s : 0 slices" % loginbase

		unique_contacts = set(contacts)
		contacts = [ c for c in unique_contacts ]	# convert back into list

		try:
			subject = message[0] % args
			body = message[1] % args
			if ADMIN & roles:
				# send only to admin
				if 'ticket_id' in args:
					subj = "Re: [PL #%s] %s" % (args['ticket_id'], subject)
				else:
					subj = "Re: [PL noticket] %s" % subject
				mailer.email(subj, body, contacts)
				ticket_id = args['ticket_id']
			else:
				ticket_id = mailer.emailViaRT(subject, body, contacts, args['ticket_id'])
		except Exception, err:
			print "exception on message:"
			import traceback
			print traceback.print_exc()
			from nodecommon import email_exception
			email_exception()
			print message

		return ticket_id


	def _format_diaginfo(self, diag_node):
		info = diag_node['info']
		if diag_node['stage'] == 'monitor-end-record':
			hlist = "    %s went from '%s' to '%s'\n" % (info[0], info[1], info[2]) 
		else:
			hlist = "    %s %s - %s\n" % (info[0], info[2], info[1]) #(node,ver,daysdn)
		return hlist


	def get_email_args(self, act_recordlist, loginbase=None):

		email_args = {}
		email_args['hostname_list'] = ""
		email_args['url_list'] = ""

		for act_record in act_recordlist:
			email_args['hostname_list'] += act_record['msg_format']
			email_args['hostname'] = act_record['nodename']
			email_args['url_list'] += "\thttp://boot2.planet-lab.org/premade-bootcd-alpha/iso/%s.iso\n"
			email_args['url_list'] += "\thttp://boot2.planet-lab.org/premade-bootcd-alpha/usb/%s.usb\n"
			email_args['url_list'] += "\n"
			if  'plcnode' in act_record and \
				'pcu_ids' in act_record['plcnode'] and \
				len(act_record['plcnode']['pcu_ids']) > 0:
				print "setting 'pcu_id' for email_args %s"%email_args['hostname']
				email_args['pcu_id'] = act_record['plcnode']['pcu_ids'][0]
			else:
				email_args['pcu_id'] = "-1"
					
			if 'ticket_id' in act_record:
				if act_record['ticket_id'] == 0 or act_record['ticket_id'] == '0':
					print "Enter the ticket_id for %s @ %s" % (loginbase, act_record['nodename'])
					sys.stdout.flush()
					line = sys.stdin.readline()
					try:
						ticket_id = int(line)
					except:
						print "could not get ticket_id from stdin..."
						os._exit(1)
				else:
					ticket_id = act_record['ticket_id']
					
				email_args['ticket_id'] = ticket_id

		return email_args

	def get_unique_issues(self, act_recordlist):
		# NOTE: only send one email per site, per problem...
		unique_issues = {}
		for act_record in act_recordlist:
			act_key = act_record['action'][0]
			if act_key not in unique_issues:
				unique_issues[act_key] = []
				
			unique_issues[act_key] += [act_record]
			
		return unique_issues
			

	def __actOnSite(self, loginbase, site_record):
		i_nodes_actedon = 0
		i_nodes_emailed = 0

		act_recordlist = []

		for nodename in site_record['nodes'].keys():
			diag_record = site_record['nodes'][nodename]
			act_record  = self.__actOnNode(diag_record)
			#print "nodename: %s %s" % (nodename, act_record)
			if act_record is not None:
				act_recordlist += [act_record]

		unique_issues = self.get_unique_issues(act_recordlist)

		for issue in unique_issues.keys():
			print "\tworking on issue: %s" % issue
			issue_record_list = unique_issues[issue]
			email_args = self.get_email_args(issue_record_list, loginbase)

			# for each record.
			#for act_record in issue_record_list:
			#	# if there's a pcu record and email config is set
			#	if 'email_pcu' in act_record:
			#		if act_record['message'] != None and act_record['email_pcu'] and site_record['config']['email']:
			#			# and 'reboot_node' in act_record['stage']:

			#			email_args['hostname'] = act_record['nodename']
			#			ticket_id = self.__emailSite(loginbase, 
			#								act_record['email'], 
			#								emailTxt.mailtxt.pcudown[0],
			#								email_args)
			#			if ticket_id == 0:
			#				# error.
			#				print "got a ticket_id == 0!!!! %s" % act_record['nodename']
			#				os._exit(1)
			#				pass
			#			email_args['ticket_id'] = ticket_id

			
			act_record = issue_record_list[0]
			# send message before squeezing
			print "\t\tconfig.email: %s and %s" % (act_record['message'] != None, 
												site_record['config']['email'])
			if act_record['message'] != None and site_record['config']['email']:
				ticket_id = self.__emailSite(loginbase, act_record['email'], 
							 				 act_record['message'], email_args)

				if ticket_id == 0:
					# error.
					print "ticket_id == 0 for %s %s" % (loginbase, act_record['nodename'])
					import os
					os._exit(1)
					pass

				# Add ticket_id to ALL nodenames
				for act_record in issue_record_list:
					nodename = act_record['nodename']
					# update node record with RT ticket_id
					if nodename in self.act_all:
						self.act_all[nodename][0]['ticket_id'] = "%s" % ticket_id
						# if the ticket was previously resolved, reset it to new.
						if 'rt' in act_record and \
							'Status' in act_record['rt'] and \
							act_record['rt']['Status'] == 'resolved':
							mailer.setTicketStatus(ticket_id, "new")
						status = mailer.getTicketStatus(ticket_id)
						self.act_all[nodename][0]['rt'] = status
					if config.mail: i_nodes_emailed += 1

			print "\t\tconfig.squeeze: %s and %s" % (config.squeeze,
													site_record['config']['squeeze'])
			if config.squeeze and site_record['config']['squeeze']:
				for act_key in act_record['action']:
					self.actions[act_key](email_args)
				i_nodes_actedon += 1
		
		if config.policysavedb:
			#print "Saving Databases... act_all, diagnose_out"
			#database.dbDump("act_all", self.act_all)
			# remove site record from diagnose_out, it's in act_all as done.
			del self.diagnose_db[loginbase]
			#database.dbDump("diagnose_out", self.diagnose_db)

		print "sleeping for 1 sec"
		time.sleep(1)
		#print "Hit enter to continue..."
		#sys.stdout.flush()
		#line = sys.stdin.readline()

		return (i_nodes_actedon, i_nodes_emailed)

	def __actOnNode(self, diag_record):
		nodename = diag_record['nodename']
		message = diag_record['message']

		act_record = {}
		act_record.update(diag_record)
		act_record['nodename'] = nodename
		act_record['msg_format'] = self._format_diaginfo(diag_record)
		print "act_record['stage'] == %s " % act_record['stage']

		# avoid end records, and nmreset records					
		# reboot_node_failed, is set below, so don't reboot repeatedly.

		#if 'monitor-end-record' not in act_record['stage'] and \
		#   'nmreset' not in act_record['stage'] and \
		#   'reboot_node_failed' not in act_record:

		#	if "DOWN" in act_record['log'] and \
		#			'pcu_ids' in act_record['plcnode'] and \
		#			len(act_record['plcnode']['pcu_ids']) > 0:
#
#				print "%s" % act_record['log'],
#				print "%15s" % (['reboot_node'],)
#				# Set node to re-install
#				plc.nodeBootState(act_record['nodename'], "rins")	
#				try:
#					ret = reboot_node({'hostname': act_record['nodename']})
#				except Exception, exc:
#					print "exception on reboot_node:"
#					import traceback
#					print traceback.print_exc()
#					ret = False
#
#				if ret: # and ( 'reboot_node_failed' not in act_record or act_record['reboot_node_failed'] == False):
#					# Reboot Succeeded
#					print "reboot succeeded for %s" % act_record['nodename']
#					act_record2 = {}
#					act_record2.update(act_record)
#					act_record2['action'] = ['reboot_node']
#					act_record2['stage'] = "reboot_node"
#					act_record2['reboot_node_failed'] = False
#					act_record2['email_pcu'] = False
#
#					if nodename not in self.act_all: 
#						self.act_all[nodename] = []
#					print "inserting 'reboot_node' record into act_all"
#					self.act_all[nodename].insert(0,act_record2)
#
#					# return None to avoid further action
#					print "Taking no further action"
#					return None
#				else:
#					print "reboot failed for %s" % act_record['nodename']
#					# set email_pcu to also send pcu notice for this record.
#					act_record['reboot_node_failed'] = True
#					act_record['email_pcu'] = True
#
#			print "%s" % act_record['log'],
#			print "%15s" % act_record['action']

		if act_record['stage'] is not 'monitor-end-record' and \
		   act_record['stage'] is not 'nmreset':
			if nodename not in self.act_all: 
				self.act_all[nodename] = []

			self.act_all[nodename].insert(0,act_record)
		else:
			print "Not recording %s in act_all" % nodename

		return act_record

	def analyseSites(self):
		i_sites_observed = 0
		i_sites_diagnosed = 0
		i_nodes_diagnosed = 0
		i_nodes_actedon = 0
		i_sites_emailed = 0
		l_allsites = []

		sorted_sites = self.sickdb.keys()
		sorted_sites.sort()
		for loginbase in sorted_sites:
			site_record = self.sickdb[loginbase]
			print "sites: %s" % loginbase
			
			i_nodes_diagnosed += len(site_record.keys())
			i_sites_diagnosed += 1

			(na,ne) = self.__actOnSite(loginbase, site_record)

			i_sites_observed += 1
			i_nodes_actedon += na
			i_sites_emailed += ne

			l_allsites += [loginbase]

		return {'sites_observed': i_sites_observed, 
				'sites_diagnosed': i_sites_diagnosed, 
				'nodes_diagnosed': i_nodes_diagnosed, 
				'sites_emailed': i_sites_emailed, 
				'nodes_actedon': i_nodes_actedon, 
				'allsites':l_allsites}

	def print_stats(self, key, stats):
		print "%20s : %d" % (key, stats[key])