class Chat(threading.Thread):
def __init__(self, user, varName, wsName, **opt):
threading.Thread.__init__(self, name="Chat")
self._user, self._varName, self._wsName = user, varName, wsName
self._ws = NetWorkSpace(wsName, persistent=True, **opt)
self._ws.declare(varName, FIFO)
self._queue = Queue.Queue()
recvWs = NetWorkSpace(wsName, **opt)
self._ifind = recvWs.ifind(varName)
self.setDaemon(True)
self.start()
def sendMessage(self, ent):
msg = ent.get().strip()
if len(msg) > 0:
self._ws.store(self._varName, "%s: %s" % (self._user, msg))
ent.delete(0, END)
def checkForNewMessages(self, txt):
txt.config(state=NORMAL)
while not self._queue.empty():
txt.insert(END, self._queue.get() + "\n")
txt.see(END)
txt.config(state=DISABLED)
txt.after(1000, self.checkForNewMessages, txt)
def run(self):
for val in self._ifind:
self._queue.put(val)
def run(self):
while True:
try:
try:
ws = NetWorkSpace(self.wsName, self.nwsHost, self.nwsPort,
persistent=True)
ws.declare(self.varName, FIFO)
while True:
s = ws.fetch(self.varName)
try:
# split the request using the first character
x = s[1:].split(s[0])
r = {'PythonSleighNwsHost': self.nwsHost,
'PythonSleighNwsPort': str(self.nwsPort)}
r['PythonSleighNwsName'], r['PythonSleighWorkerCount'], \
r['PythonSleighID'], r['PythonSleighWorkingDir'], \
r['PythonSleighWorkerOut'], r['PythonSleighLogDir'], \
r['PythonSleighUserName'], r['PythonSleighModulePath'] = x
self.gotRequest(r)
except:
# bad request: ignore it
pass
except NwsServerException:
# server is probably down. sleep a bit, and try again
time.sleep(10)
except NwsOperationException:
# maybe someone deleted my variable to signal a shutdown?
return
finally:
# ws may not be defined
try:ws.server.close()
except: pass
ws = None
class Provider:
def __init__(self, ws_name='Estoque', time_sleep=1, batch_size=10):
self.time_sleep = time_sleep
self.batch_size = batch_size
#self.rmi=RMIManager()
self.workspace = NetWorkSpace(ws_name,
cfg.ts_machine_ip,
cfg.ts_machine_port,
persistent=True)
#Método para gerar lotes de um produto
# product_amount (int): quantidade requisitada do produto.
def generateBatch(self, product_amount):
n_batchs = int(ceil((product_amount * 1.0) / self.batch_size))
delivery = 0
for i in range(n_batchs):
sleep(self.time_sleep)
delivery += self.batch_size
return delivery
#Método que fornece uma quantidade do produto no espaço de tuplas
# product_name (string): nome do produto;
# product_amount (int): quantidade requisitada do produto
def supply(self, product_name, product_amount):
print 'Processando requisição para (' + str(product_name) + ',' + str(
product_amount) + ')'
sleep(self.time_sleep)
delivery = self.generateBatch(product_amount)
self.workspace.store(product_name, delivery)
print 'Requisição entregue'
class TSManager:
def __init__(self):
self.ws = NetWorkSpace('Estoque', cfg.ts_machine_ip, cfg.ts_machine_port, persistent=True)
def put(self, item_name, quantity):
self.ws.store(item_name, quantity)
def get(self, item_name):
available = self.ws.fetchTry(item_name)
return available
def checkStock(self, content):
new_order = content
for item in new_order["items"]:
left = item["need"] - item["have"]
while item["need"] > item["have"]:
in_stock = self.get(item["name"])
if in_stock == None:
break
got = min(in_stock, left)
item["have"] += got
in_stock -= got
if in_stock > 0:
self.put(item["name"], in_stock)
return new_order
def __init__(self, ws_name='Estoque', time_sleep=1, batch_size=10):
self.time_sleep = time_sleep
self.batch_size = batch_size
#self.rmi=RMIManager()
self.workspace = NetWorkSpace(ws_name,
cfg.ts_machine_ip,
cfg.ts_machine_port,
persistent=True)
def espetaculos():
page = '<link rel="stylesheet" type="text/css" media="screen" href="../static/index.css" />'
page += '<h1>Eventos</h1>'
ts = NetWorkSpace("database", HOST_TS, PORT_TS)
for i in ts.listVars(wsName='database', format='dict'):
page += "<button class=\"show\"><a href=\"/consulta/<" + i + ">\">" + i + "</a></button><br>"
page += '<br><br><button class="show"><a href="/">Home</a></button>'
return page
def main():
# initialize variables from environment
modulePath = Env.get('PythonSleighModulePath', '')
logDir = Env.get('PythonSleighLogDir')
if not logDir or not os.path.isdir(logDir):
logDir = _TMPDIR
outfile = Env.get('PythonSleighWorkerOut')
if outfile:
outfile = os.path.join(logDir, os.path.split(outfile)[1])
else:
outfile = _NULFILE
Env['PythonSleighLogFile'] = outfile
verbose = Env.has_key('PythonSleighWorkerOut') and 1 or 0
nwsName = Env['PythonSleighNwsName']
nwsHost = Env.get('PythonSleighNwsHost', 'localhost')
nwsPort = int(Env.get('PythonSleighNwsPort', '8765'))
if Env.has_key('PythonSleighName'):
name = Env['PythonSleighName']
if Env.has_key('PythonSleighID'):
name = '%s@%s' % (name, Env['PythonSleighID'])
logger.setName(name)
logger.logDebug(nwsName, nwsHost, nwsPort)
nws = NetWorkSpace(nwsName, nwsHost, nwsPort, useUse=True, create=False)
newProtocol = nws.findTry('version') is not None
if newProtocol:
worker_id = nws.fetch('worker_ids')
Env['PythonSleighRank'] = worker_id
# create the script file for the worker to execute
script = '''\
import sys, os
try: os.setpgid(0, 0)
except: pass
try: sys.stdout = sys.stderr = open(%s, 'w', 0)
except: pass
sys.path[1:1] = %s.split(os.pathsep)
from nws.sleigh import cmdLaunch
print "entering worker loop"
cmdLaunch(%d)
''' % (repr(outfile), repr(modulePath), verbose)
fd, tmpname = tempfile.mkstemp(suffix='.py', prefix='__nws', text=True)
tmpfile = os.fdopen(fd, 'w')
tmpfile.write(script)
tmpfile.close()
logger.logDebug("executing Python worker")
argv = [sys.executable, tmpname]
out = open(outfile, 'w')
try:
p = subprocess.Popen(argv, stdin=open(tmpname), stdout=out,
stderr=subprocess.STDOUT)
except OSError, e:
logger.logError("error executing command:", argv)
raise e
def __init__(self, user, varName, wsName, **opt):
threading.Thread.__init__(self, name="Chat")
self._user, self._varName, self._wsName = user, varName, wsName
self._ws = NetWorkSpace(wsName, persistent=True, **opt)
self._ws.declare(varName, FIFO)
self._queue = Queue.Queue()
recvWs = NetWorkSpace(wsName, **opt)
self._ifind = recvWs.ifind(varName)
self.setDaemon(True)
self.start()
def consulta(espetaculo):
form = FormCartao(request.form)
print form.errors
if request.method == 'POST':
cartao = request.form['cartao']
print cartao
espetaculo = espetaculo.split('<')[1]
espetaculo = espetaculo.split('>')[0]
port = PORT_TS
tsname = espetaculo
host = HOST_TS
ts = NetWorkSpace(tsname, host, port)
seats = ""
br = 0
try:
seats = '<link rel="stylesheet" type="text/css" media="screen" href="../static/index.css" />'
lista = ts.listVars(wsName=tsname, format='dict')
if not (lista):
seats += "<h1> Sinto muito! Evento esgotado. </h1>"
else:
seats += '<form action="" method="post">'
seats += '{{ form.csrf }}'
seats += '<div class="input text">'
seats += '{{ form.cartao.label }} {{ form.cartao }}'
seats += '</div><br>'
seats += '<button type="submit">Confirmar cartao</button>'
seats += '</form>'
if form.validate():
seats += "<h1> Assentos </h1>"
for i in sorted(lista):
seats += "<a href=\"/compra/<" + i + ">/<" + espetaculo + ">/<" + cartao + ">\"><button>"
seats += i
seats += "</button></a>"
br += 1
if (br == 10):
seats += "<br>"
br = 0
seats += '<br><br><button class="show"><a href="/">Home</a></button>'
except:
raise
seats = "There's no more seats. Sorry :("
return render_template_string(seats, form=form)
def babelfish(host, port):
ws = NetWorkSpace('Python babelfish', host, port)
while 1:
try:
v = ws.fetch('food')
t = str(v)
if len(t) > MAXLEN:
t = t[:MAXLEN] + '[WARNING: output truncated]'
elif not t:
t = repr(v)
except NwsUnpicklingException, e:
t = 'Unpickling error: ' + str(e.exception)
ws.store('doof', t)
def __init__(self, nwsHost, nwsPort, nwsName, gotShutdown):
threading.Thread.__init__(self, name='Sentinel:' + nwsName)
self.nwsHost = nwsHost
self.nwsPort = nwsPort
self.nwsName = nwsName
self.gotShutdown = gotShutdown
self.ws = NetWorkSpace(self.nwsName, self.nwsHost, self.nwsPort,
useUse=True, create=False)
def compra(assento, espetaculo, cartao):
assento = assento.split('<')[1]
assento = assento.split('>')[0]
espetaculo = espetaculo.split('<')[1]
espetaculo = espetaculo.split('>')[0]
cartao = cartao.split('<')[1]
cartao = cartao.split('>')[0]
host = HOST_TS
port = PORT_TS
tsname = espetaculo
ts = NetWorkSpace(tsname, host, port)
try:
seat = ts.fetchTry(assento)
ts.deleteVar(seat)
if (seat == None):
exit(0)
#Envio para fila de mensagens
connection = pika.BlockingConnection(
pika.ConnectionParameters(host='localhost'))
channel = connection.channel()
channel.queue_declare(queue='pendentes')
channel.basic_publish(exchange='',
routing_key='pendentes',
body=cartao + '-' + seat)
print(" [x] Mensagem recebida'")
connection.close()
aprovado = fila(assento)
if aprovado == 1:
retorno = '<link rel="stylesheet" type="text/css" media="screen" href="../static/index.css" />'
retorno += "<h1>Compra aprovada! Obrigado por comprar conosco :D</h1>"
retorno += '<br><br><button class="show"><a href="/">Home</a></button>'
return retorno
elif aprovado == 0:
ts.store(seat, assento)
retorno = '<link rel="stylesheet" type="text/css" media="screen" href="../static/index.css" />'
retorno += "<h1>Compra reprovada :( Tente com outra forma de pagamento.</h1>"
retorno += '<br><br><button class="show"><a href="/">Home</a></button>'
return retorno
else:
retorno = '<link rel="stylesheet" type="text/css" media="screen" href="../static/index.css" />'
retorno += "<h1>Falha na compra</h1>"
retorno += '<br><br><button class="show"><a href="/">Home</a></button>'
return retorno
except:
raise
return "Except: Falha na compra."
class Chat:
def __init__(self, user, varName, wsName, **opt):
self._user, self._varName, self._wsName = user, varName, wsName
self._ws = NetWorkSpace(wsName, persistent=True, **opt)
self._ws.declare(varName, FIFO)
self._ifindTry = self._ws.ifindTry(varName)
def sendMessage(self, ent):
msg = ent.get().strip()
if len(msg) > 0:
self._ws.store(self._varName, "%s: %s" % (self._user, msg))
ent.delete(0, END)
def checkForNewMessages(self, txt):
txt.config(state=NORMAL)
self._ifindTry.restart()
for msg in self._ifindTry:
txt.insert(END, msg + '\n')
txt.see(END)
txt.config(state=DISABLED)
txt.after(1000, self.checkForNewMessages, txt)
class Sentinel(threading.Thread):
def __init__(self, nwsHost, nwsPort, nwsName, gotShutdown):
threading.Thread.__init__(self, name='Sentinel:' + nwsName)
self.nwsHost = nwsHost
self.nwsPort = nwsPort
self.nwsName = nwsName
self.gotShutdown = gotShutdown
self.ws = NetWorkSpace(self.nwsName, self.nwsHost, self.nwsPort,
useUse=True, create=False)
def __str__(self):
return "%s@%s:%d" % (self.nwsName, self.nwsHost, self.nwsPort)
def run(self):
try:
try:
self.ws.find('Sleigh ride over')
self.ws.store('bye', 'Sleigh ride over')
except Exception, e:
try: self.ws.store('bye', str(sys.exc_info()[1]))
except: pass
finally:
try: self.gotShutdown(self)
except: pass
try: self.ws.server.close()
except: pass
if len(sys.argv) in [2, 3]:
try:
loops = int(sys.argv[1])
except:
print >> sys.stderr, "Usage: %s [<loops> [<wsname>]]" % sys.argv[0]
sys.exit(1)
if len(sys.argv) == 3:
wsname = sys.argv[2]
elif len(sys.argv) != 1:
print >> sys.stderr, "Usage: %s [<loops> [<wsname>]]" % sys.argv[0]
sys.exit(1)
try:
from nws.client import NetWorkSpace
nws = NetWorkSpace(wsname, host, port, useUse=True)
game = nws.fetch("game")
nws.store("game", game + 1)
pong = "pong_%d" % game
request = {'replyto': pong}
print "Starting a ping-pong game", game
for i in xrange(loops):
request['i'] = i
nws.store("ping", request)
reply = nws.fetch(pong)
print reply
if i != reply['i']:
print "Error: expected %d, received %d" % (i, reply['i'])
nws.deleteVar(pong)
#!/usr/bin/env python
import sys
try:
from nws.client import NetWorkSpace
except ImportError, e:
print >> sys.stderr, "unable to import the nws.client python module"
print >> sys.stderr, "make sure you have nwsclient installed on this machine"
sys.exit(1)
try:
ws = NetWorkSpace('snake pit')
except ImportError, e:
print >> sys.stderr, "make sure you're running the NWS server on this machine"
print >> sys.stderr, str(e)
sys.exit(1)
print 'connected, listing contents of netWorkSpace (should be nothing there).'
print ws.listVars()
ws.store('x', 1)
print 'should now see x.'
print ws.listVars()
print 'find (but don\'t consume) x.'
print ws.find('x')
print 'check that it is still there.'
print ws.listVars()
print 'associate another value with x.'
#!/usr/bin/env python
import sys, socket
host = "localhost"
port = 8765
wsname = "hello"
try:
from nws.client import NetWorkSpace
nws = NetWorkSpace(wsname, host, port)
count = int(raw_input("Number of times to loop? "))
print "hello: iterations:", count
nws.store("hello example", count)
for i in range(count):
nws.store("hello", i)
j = nws.fetch("hello")
nws.fetch("hello example")
print "Success"
except KeyboardInterrupt:
print "hello exiting"
except ImportError:
print "Unable to import the nwsClient module"
print "You may need to set or correct your PYTHONPATH"
except socket.error:
print "NWS server not running on %s, port %d" % (host, port)
except:
#start tuple space - twistd -y /etc/nws.tac
#deleteVar() - deleta
#find() - return a value
#store() - insere no espaco
#fetch() - retira do espaco
#fetchTry() - retira nao bloqueante
port = 8765
host = sys.argv[1]
shows = ["Red Hot Chili Peppers", "ACDC", "Linkin Park", "Iron Maiden"]
for tsname in shows:
data = NetWorkSpace("database", host, port, persistent=True)
data.declare(tsname, 'fifo')
data.store(tsname, tsname)
ts = NetWorkSpace(tsname, host, port, persistent=True)
alpha = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z']
try:
for i in alpha[:10]:
for j in range(10):
ts.declare("%s%d" % (i, j), 'fifo')
ts.store("%s%d" % (i, j), "%s%d" % (i, j))
print("Creation successful!")
except:
print ("Creation failed.")
def __init__(self):
self.ws = NetWorkSpace('Estoque', '192.168.1.102', persistent=True)
def __init__(self):
self.ws = NetWorkSpace('Estoque', cfg.ts_machine_ip, cfg.ts_machine_port, persistent=True)
from nws.client import NetWorkSpace
import sys
#twistd -y /etc/nws.tac
port = 8765
try:
ts = NetWorkSpace(sys.argv[1], sys.argv[2], port, persistent=True)
print("Creation successful!")
except:
print("Creation failed.")
print("start_tuplespace.py <tuplespace_name> <host>")
elif opt == '-p':
nkw['serverPort'] = int(arg)
else:
raise 'internal error: out-of-sync with getopt'
if len(args) < 1:
op = 'ls' # default operation
elif args[0] not in ['list', 'ls', 'dir',
'put', 'store', 'write',
'get', 'find', 'read',
'delete', 'del', 'remove', 'rm']:
usage()
else:
op = args.pop(0)
ws = NetWorkSpace('NWS Copy', **nkw)
if op in ['list', 'ls', 'dir']:
vars = listVars(ws)
vars.sort()
for var in vars:
print var
elif op in ['put', 'store', 'write']:
if not args: usage()
for n in args:
try:
f = open(n, 'rb')
except IOError:
print >> sys.stderr, "error reading file", n
continue
#!/usr/bin/env python
from nwss.local import NwsLocalServer
from nws.client import NetWorkSpace
from nws.sleigh import Sleigh
from math import sqrt
# start the local nws server
srv = NwsLocalServer(daemon=False)
srv.wait_until_started()
# try an nws example
ws = NetWorkSpace('foo', serverPort=srv.port)
print ws
for i in range(10):
ws.store('x', 'Value %d' % i)
print list(ws.ifetchTry('x'))
# try a sleigh example
s = Sleigh(nwsPort=srv.port)
print s
for i in xrange(10):
print s.eachElem(sqrt, range(10))
# shutdown the local nws server
print 'shutting it down'
srv.shutdown()
assert not srv.isAlive()
try:
def __init__(self, user, varName, wsName, **opt):
self._user, self._varName, self._wsName = user, varName, wsName
self._ws = NetWorkSpace(wsName, persistent=True, **opt)
self._ws.declare(varName, FIFO)
self._ifindTry = self._ws.ifindTry(varName)
import sys, socket, time
host = "localhost"
port = 8765
wsname = "ping-pong"
if len(sys.argv) == 2:
wsname = sys.argv[1]
elif len(sys.argv) != 1:
print >> sys.stderr, "Usage: %s [<wsname>]" % sys.argv[0]
sys.exit(1)
try:
from nws.client import NetWorkSpace
nws = NetWorkSpace(wsname, host, port)
nws.store("game", 0)
print "Ping-pong server '%s' starting" % wsname
while 1:
request = nws.fetch("ping")
pong = request["replyto"]
request["time"] = time.asctime()
print "Got a ping from", pong
nws.store(pong, request)
except KeyboardInterrupt:
print "Ping-pong server '%s' exiting" % wsname
except ImportError:
print "Unable to import the nwsClient module"
print "You may need to set or correct your PYTHONPATH"
def main():
# initialize variables from environment
modulePath = Env.get("PythonSleighModulePath", "")
logDir = Env.get("RSleighLogDir")
if not logDir or not os.path.isdir(logDir):
logDir = _TMPDIR
verbose = Env.has_key("RSleighWorkerOut") and "TRUE" or "FALSE"
nwsName = Env["RSleighNwsName"]
nwsHost = Env.get("RSleighNwsHost", "localhost")
nwsPort = int(Env.get("RSleighNwsPort", "8765"))
print nwsName, nwsHost, nwsPort
# create the script file for the worker to execute
script = (
"""\
# use RSleighScriptDir to add the directory that contains
# the nws package to the library path if possible
# (and without modifying the worker's global environment)
local({
scriptDir <- Sys.getenv('RSleighScriptDir')
if (basename(scriptDir) == 'bin') {
nwsDir <- dirname(scriptDir)
nwsPkg <- basename(nwsDir)
if (nwsPkg == 'Rbig') {
libDir <- dirname(nwsDir)
oldPaths <- .libPaths()
newPaths <- c(libDir, oldPaths)
cat("setting library paths to", newPaths, "\n")
.libPaths(newPaths)
}
}
})
library(Rbig)
cmdLaunch(%s)
"""
% verbose
)
fd, tmpname = tempfile.mkstemp(suffix=".R", prefix="__nws", dir=_TMPDIR, text=True)
tmpfile = os.fdopen(fd, "w")
tmpfile.write(script)
tmpfile.close()
print "executing R worker(s)"
rprog = Env.get("RProg", "R")
argv = [rprog, "--vanilla", "--slave"]
if NetWorkSpace:
nws = NetWorkSpace(nwsName, nwsHost, nwsPort, useUse=True, create=False)
newProtocol = nws.findTry("version") is not None
else:
nws = None
newProtocol = False
numProcs = int(Env.get("RSleighNumProcs", "1"))
workers = []
sleighID = int(Env["RSleighID"]) # only used for non-sleigh plugin
for i in xrange(numProcs):
outfile = Env.get("RSleighWorkerOut")
if outfile:
prefix = "sleigh_ride_%d_" % i
fd, outfile = tempfile.mkstemp(suffix=".txt", prefix=prefix, dir=logDir, text=True)
out = os.fdopen(fd, "w")
else:
outfile = _NULFILE
out = open(outfile, "w")
Env["RSleighLogFile"] = outfile
if newProtocol:
worker_id = nws.fetch("worker_ids")
else:
worker_id = str(i + sleighID)
Env["RSleighRank"] = worker_id
Env["RSleighLocalID"] = str(i)
try:
if sys.platform.startswith("win"):
p = subprocess.Popen(argv, stdin=open(tmpname), stdout=out, stderr=subprocess.STDOUT)
wpid = int(p._handle)
else:
p = subprocess.Popen(argv, stdin=open(tmpname), stdout=out, stderr=subprocess.STDOUT, preexec_fn=setpg)
wpid = p.pid
# attempt to make the child process a process group leader
try:
os.setpgid(wpid, 0)
except:
pass
except OSError, e:
print >> sys.stderr, "error executing command:", argv
if not os.path.exists(rprog):
print >> sys.stderr, rprog, "does not exist"
raise e
print "started worker %s, pid: %s" % (worker_id, wpid)
workers.append((p, wpid, worker_id))
