300 lines
10 KiB
Python
300 lines
10 KiB
Python
'''
|
|
The goal of this application is to generate a power diagram that will help system administrators to:
|
|
- document the power supply architecture
|
|
- easily spot potential power overloads (for example if the power consumption exceeds the capacity of a cable)
|
|
|
|
This application takes its input from a database, currently in the form of an sql dump, but it could easily be adapted to read directly from a mysql database
|
|
'''
|
|
|
|
import sqlite3
|
|
|
|
|
|
import os
|
|
import re
|
|
import sys
|
|
import pygraphviz
|
|
from inventory import Inventory
|
|
from SimpaDbUtil import SqlFile, SqlDatabaseReader
|
|
|
|
def add_capacity_constraints(capacity1, capacity2):
|
|
"""
|
|
combines 2 capacity constraints (max amperes) together
|
|
|
|
:param float capacity1: max amperes for the first capacity, None if there are no constraints
|
|
:param float capacity2: max amperes for the second capacity, None if there are no constraints
|
|
:return float: max amperes for the combined capacity, None if there are no constraints
|
|
"""
|
|
if capacity1 is None:
|
|
return capacity2
|
|
else:
|
|
if capacity2 is None:
|
|
return capacity1
|
|
else:
|
|
return min(capacity1, capacity2)
|
|
|
|
class Machine(object):
|
|
"""
|
|
represents a device with input and output power plugs. It could represent a power consumer such as a server (in which case, it has no output plug), or a power distrubtion unit (in which case, it has one input plug and more than one output plugs), or even something else...
|
|
"""
|
|
def __init__(self, name, power_config):
|
|
self.name = name
|
|
self.input_plugs = {}
|
|
self.output_plugs = {}
|
|
self.current_capacity_constraint = None # the maximum amperes in this connection
|
|
self.power_config = power_config
|
|
self.power_consumption = 0.0
|
|
|
|
def get_plug(self, plug_name):
|
|
plugs = {'i': self.input_plugs, 'o':self.output_plugs}[plug_name[0]]
|
|
if plug_name not in plugs:
|
|
plugs[plug_name] = Plug(plug_name, self, self.power_config)
|
|
return plugs[plug_name]
|
|
|
|
def get_max_amperes(self):
|
|
capacity = None
|
|
if len(self.input_plugs) > 0:
|
|
capacity = self.input_plugs.values()[0].get_max_amperes()
|
|
capacity = add_capacity_constraints (capacity, self.current_capacity_constraint)
|
|
return capacity
|
|
|
|
def get_outgoing_connections(self):
|
|
outgoing_connections = []
|
|
for conn in self.power_config.connections:
|
|
if conn.from_plug.machine == self:
|
|
outgoing_connections.append(conn)
|
|
return outgoing_connections
|
|
|
|
def get_power_consumption(self):
|
|
power_consumption = self.power_consumption
|
|
for conn in self.get_outgoing_connections():
|
|
power_consumption += conn.get_power_consumption()
|
|
# print("machine %s : power_consumption += %f" % (self.name, conn.get_power_consumption()))
|
|
return power_consumption
|
|
|
|
|
|
class Plug(object):
|
|
"""
|
|
represents a power plug (input or output) of a device
|
|
"""
|
|
def __init__(self, name, machine, power_config):
|
|
self.name = name
|
|
self.machine = machine
|
|
self.current_capacity_constraint = None # the maximum amperes in this connection
|
|
self.power_config = power_config
|
|
|
|
def __str__(self):
|
|
return self.machine.name + '.' + self.name
|
|
|
|
def get_incoming_connection(self):
|
|
return self.power_config.get_connection_to(self)
|
|
|
|
# def get_outgoing_connections(self):
|
|
# return self.power_config.get_connections_from(self)
|
|
|
|
def is_input_plug(self):
|
|
return self.name[0] == 'i'
|
|
|
|
def set_current_capacity_constraint(self, max_amps):
|
|
self.current_capacity_constraint = max_amps
|
|
|
|
def get_max_amperes(self):
|
|
capacity = None
|
|
|
|
if self.is_input_plug():
|
|
in_con = self.get_incoming_connection()
|
|
if in_con:
|
|
# apply incoming connection amperes limitation
|
|
capacity = add_capacity_constraints (capacity, in_con.get_max_amperes())
|
|
# print(str(self)+ 'after incoming connection amperes limitation, capacity = ' + str(capacity))
|
|
else:
|
|
# apply the machine containing this plug's amperes limitation
|
|
capacity = add_capacity_constraints (capacity, self.machine.get_max_amperes())
|
|
# print(str(self)+'apply the machine containing this plug s amperes limitation, capacity = ' + str(capacity))
|
|
|
|
# apply this plug's amperes limitation
|
|
capacity = add_capacity_constraints (capacity, self.current_capacity_constraint)
|
|
# print(str(self)+'after apply this plug s amperes limitation, capacity = ' + str(capacity))
|
|
|
|
return capacity
|
|
|
|
# def get_power_consumption(self):
|
|
# power_consumption = 0.0
|
|
# for conn in self.get_outgoing_connections():
|
|
# power_consumption += conn.get_power_consumption()
|
|
# power_consumption += self.get_power_consumption()
|
|
# return self.from_plug.get_power_consumption()
|
|
|
|
|
|
class Connection(object):
|
|
"""
|
|
a power cable connecting an input power plug to an output power plug
|
|
"""
|
|
|
|
def __init__(self, from_plug, to_plug):
|
|
self.from_plug = from_plug
|
|
self.to_plug = to_plug
|
|
self.current_capacity_constraint = None # the maximum amperes in this connection
|
|
|
|
def __str__(self):
|
|
return str(self.from_plug) + ' -> ' + str(self.to_plug) + ' (' + str(self.from_plug.get_max_amperes()) + str(self.get_max_amperes()) + 'A)'
|
|
|
|
def get_max_amperes(self):
|
|
capacity = self.from_plug.get_max_amperes()
|
|
capacity = add_capacity_constraints (capacity, self.to_plug.current_capacity_constraint)
|
|
if self.current_capacity_constraint is not None:
|
|
capacity = min(capacity, self.current_capacity_constraint)
|
|
return capacity
|
|
|
|
def is_redundancy_cable(self):
|
|
return not (self.to_plug.name == 'i' or self.to_plug.name == 'i1')
|
|
|
|
def get_power_consumption(self):
|
|
# at the moment, this program doesn't handle redundant power supplies properly:
|
|
# the energy dragged by a power supply depends whether both power supplies are connnected to the same provider or not
|
|
if self.is_redundancy_cable():
|
|
return 0.0 # consider secondary power supplies to drag 0 power
|
|
else:
|
|
return self.to_plug.machine.get_power_consumption()
|
|
|
|
|
|
class PowerConfig(object):
|
|
"""
|
|
the description of how machines are connected together (in terms of electric power)
|
|
"""
|
|
|
|
def __init__(self, simpa_db_sql_file_path):
|
|
self.machines = {}
|
|
self.connections = []
|
|
|
|
sql_source = SqlFile(simpa_db_sql_file_path)
|
|
sql_reader = SqlDatabaseReader(sql_source)
|
|
inventory = Inventory(sql_reader)
|
|
self._parse_from_inventory(inventory)
|
|
|
|
def _parse_from_inventory(self, inventory):
|
|
"""
|
|
:param Inventory inventory:
|
|
"""
|
|
|
|
rows = inventory.query("SELECT * FROM machine_to_power")
|
|
|
|
for row in rows:
|
|
(to_plug_as_str, from_plug_as_str, powercordid)=row
|
|
if to_plug_as_str != '':
|
|
conn = self._add_connection(from_plug_as_str, to_plug_as_str)
|
|
for plug in (conn.from_plug, conn.to_plug):
|
|
plug_capacity = inventory.read_plug_capacity(plug)
|
|
if plug_capacity is not None:
|
|
plug.set_current_capacity_constraint(plug_capacity)
|
|
|
|
rows = inventory.query("SELECT * FROM power_output_specs")
|
|
|
|
for row in rows:
|
|
# print row
|
|
# ('ups1_o1', 16.0),
|
|
(to_plug_as_str, max_amps_as_str)=row
|
|
to_plug = self._get_plug(to_plug_as_str)
|
|
to_plug.set_current_capacity_constraint(float(max_amps_as_str))
|
|
|
|
for machine in self.machines.values():
|
|
|
|
machine_name = machine.name
|
|
|
|
if re.match('simpatix.._..', machine_name):
|
|
machine_name = '_'.join(machine_name.split('_')[0:-1])
|
|
|
|
# print(machine_name)
|
|
|
|
machine_spec_id = inventory.machine_name_to_machine_spec_id(machine_name)
|
|
if machine_spec_id is not None:
|
|
power_consumption = inventory.machine_spec_id_to_power_consumption(machine_spec_id)
|
|
if power_consumption is not None:
|
|
machine.power_consumption = power_consumption
|
|
|
|
|
|
def get_connection_to(self, to_plug):
|
|
for connection in self.connections:
|
|
if connection.to_plug == to_plug:
|
|
return connection
|
|
return None
|
|
|
|
def _get_machine(self, machine_name):
|
|
if machine_name not in self.machines:
|
|
self.machines[machine_name] = Machine(machine_name, self)
|
|
return self.machines[machine_name]
|
|
|
|
def _get_plug(self, plug_as_str):
|
|
elements = plug_as_str.split('_')
|
|
plug_name = elements[-1]
|
|
machine_name = plug_as_str[0:-(len(plug_name)+1)]
|
|
machine = self._get_machine(machine_name)
|
|
return machine.get_plug(plug_name)
|
|
|
|
def _add_connection(self, from_plug_as_str, to_plug_as_str):
|
|
from_plug = self._get_plug(from_plug_as_str)
|
|
to_plug = self._get_plug(to_plug_as_str)
|
|
conn = Connection(from_plug, to_plug)
|
|
self.connections.append(conn)
|
|
return conn
|
|
|
|
def __str__(self):
|
|
s = ''
|
|
for c in self.connections:
|
|
s += str(c) + '\n'
|
|
return s
|
|
|
|
|
|
def power_config_to_svg( power_config, svg_file_path ):
|
|
"""
|
|
creates a svg diagram representing the input power configuration
|
|
|
|
:param PowerConfig power_config: the input power config
|
|
"""
|
|
graph = pygraphviz.AGraph()
|
|
graph.graph_attr['overlap']='false'
|
|
graph.graph_attr['splines']='true'
|
|
|
|
|
|
graph.edge_attr['colorscheme']='rdylgn9' # 'brbg11'
|
|
graph.node_attr['shape']='box'
|
|
graph.node_attr['height']=0.3 # default 0.5 inches
|
|
graph.node_attr['fontname']='Helvetica' # default : Times-Roman
|
|
graph.edge_attr['fontsize']=10 # default : 14 pt
|
|
graph.edge_attr['len']=1.5 # default : 1.0
|
|
|
|
def hotness_to_hsv_color(hotness):
|
|
"""
|
|
:param float hotness: temperature of the wire ratio (0.0 : cold -> 1.0 : hot)
|
|
"""
|
|
clamped_hotness = max(min(hotness, 1.0), 0.0)
|
|
return "%f, 1.0, 0.8" % ((1.0-clamped_hotness)*0.33)
|
|
|
|
#graph.add_node('a')
|
|
#graph.add_node('b')
|
|
#graph.add_edge(u'a',u'b',color='blue')
|
|
#graph.add_edge(u'b',u'a',color='blue')
|
|
for con in power_config.connections:
|
|
# print(con.from_plug.machine.name, con.to_plug.machine.name)
|
|
if not con.is_redundancy_cable(): # don't display redundancy cables, as they might overlap and hide the main one
|
|
power_consumption = con.get_power_consumption()
|
|
amperes = power_consumption/220.0
|
|
color='green'
|
|
capacity = con.get_max_amperes()
|
|
if capacity == None:
|
|
label = '?'
|
|
else:
|
|
label = str(capacity) + 'A'
|
|
if amperes/capacity > 1.0:
|
|
color='red'
|
|
elif amperes/capacity > 0.75:
|
|
color='orange'
|
|
else:
|
|
color='green'
|
|
label = "%.1f/%s" % (amperes, label)
|
|
#color='//%d' % int(9.0-amperes/capacity*8)
|
|
|
|
color = hotness_to_hsv_color(pow(amperes/capacity, 4.0))
|
|
graph.add_edge(con.from_plug.machine.name, con.to_plug.machine.name, color=color, label=label, penwidth=capacity*0.25)
|
|
graph.layout(prog='twopi')
|
|
graph.draw(svg_file_path)
|