from pyccn import CCN, Name, Interest, Closure
from time import sleep
worked = False
class MyClosure(Closure):
def upcall(self, kind, upcallInfo):
global worked
print("Got response")
print(kind)
print(upcallInfo)
worked = True
n = Name("ccnx:/ccnx/ping")
i = Interest()
closure = MyClosure()
c = CCN()
res = c.expressInterest(n, closure, i)
print(res)
#causes crashes
c.run(10)
print("Ha!")
assert(worked)
class CcnxSocket(object):
''' A socket like handler for ccnx operations.
Runs a simple event loop and handles set interest filter, send interest,
and publish data.
Current only one ccnx handle is used, we can use multiple handles if needed,
but there is no such need as of now.
'''
__logger = Logger.get_logger('CcnxSocket')
def __init__(self, *args, **kwargs):
'''
Creates a socket. As of now, we try to get the ccnx key from the default location
'''
super(CcnxSocket, self).__init__()
self.ccnx_key = CCN.getDefaultKey()
self.ccnx_key_locator = pyccn.KeyLocator(self.ccnx_key)
self.ccnx_handle = CCN()
self.event_loop = CcnxLoop(self.ccnx_handle)
def get_signed_info(self, freshness):
'''
Get signed info to be included in the Content Object
Args:
freshness (int): the freshness of the Content Object in seconds
Returns:
a PyCCN.SignedInfo object
'''
si = pyccn.SignedInfo()
si.publisherPublicKeyDigest = self.ccnx_key.publicKeyID
si.type = pyccn.CONTENT_DATA
si.freshnessSeconds = freshness
si.keyLocator = self.ccnx_key_locator
return si
def get_pyccn_name(self, name):
'''Get a valid name for PyCCN. This is useful when the name string is encoded as unicode, as is the usual case in Python. However, PyCCN has problem handling unicode names, raising TypeError as a result.
Args:
name (str): the name string
Returns:
An ascii encoded name string
'''
if isinstance(name, unicode):
return Name(name.encode('ascii', 'ignore'))
else:
return Name(name)
def publish_content(self, name, content, freshness = 5):
'''Publish the data as a Content Object
Args:
name (str): the name string
content (bytes): the data bytes
Kwargs:
freshness (int): the freshness in seconds for the Content Object
'''
co = ContentObject()
co.name = self.get_pyccn_name(name)
co.content = content
si = self.get_signed_info(freshness)
co.signedInfo = si
co.sign(self.ccnx_key)
self.ccnx_handle.put(co)
def send_interest(self, name, closure, template = None):
'''Send Interest
Args:
name (str): the name string
closure (PyCCN.Closure): the closure that includes the callbacks to be used by PyCCN for this Interest
Kwargs:
template (PyCCN.Interest): the template for the additional field to be carried in the Interest, such as ChildSelector, Lifetime, AnswerOrigin, etc..
'''
n = self.get_pyccn_name(name)
self.ccnx_handle.expressInterest(n, closure, template)
def register_prefix(self, prefix, closure):
'''Register the prefix under which the user wishes to receive Interests
Args:
prefix (str): the prefix name string
closure (PyCCN.Closure): the closure that includes the callbacks to be used by PyCCN when an Interest with such prefix comes
'''
p = self.get_pyccn_name(prefix)
self.ccnx_handle.setInterestFilter(p, closure)
def start(self):
'''Start the CcnxLoop
'''
start_new_thread(self.event_loop.run, ())
def stop(self):
'''Stop the CcnxLoop
'''
self.event_loop.stop()
print
for obj in tyzxObjects.values():
print obj.id, ":", obj.x, obj.y, obj.z, obj.localupdatetime
if __name__ == "__main__":
print "prefix", prefix
processIncoming = ProcessIncoming()
while (True):
T = time.time()
if T - lastdiscovertime > DISCOVER_INTEREST_PERIOD:
interestDiscover.exclude = ExclusionFilter()
interestDiscover.exclude.add_names(
[Name([key]) for key in tyzxObjects.keys()])
interestDiscover.exclude.add_names(
[Name([key]) for key in oldObjects])
ccn.expressInterest(interestDiscover.name, processIncoming,
interestDiscover)
lastdiscovertime = time.time()
for obj in tyzxObjects.values():
if T - obj.lastinteresttime < UPDATE_INTEREST_PERIOD:
continue
interestUpdate.name = Name(prefix)
interestUpdate.name += str(obj.id)
interestUpdate.exclude = ExclusionFilter()
interestUpdate.exclude.add_any()
n = Name()
n.components.append(versionFromTime(obj.time))
interestUpdate.exclude.add_name(n)
interestUpdate.exclude.add_name(Name([last_version_marker]))
interestUpdate.exclude.add_any()
ccn.expressInterest(interestUpdate.name, processIncoming,
interestUpdate)
class sequencer(Closure):
#ensure singleton
_instance = None
def __new__(cls, *args, **kwargs):
if not cls._instance:
cls._instance = super(sequencer, cls).__new__(cls, *args, **kwargs)
return cls._instance
def __init__(self, configFileName):
self.appConfigFileName = configFileName
self.loadConfigFile()
self.handle = CCN()
self.getApplicationKey()
#nameCrypto
self.state = NameCrypto.new_state()
self.cryptoKey = NameCrypto.generate_application_key(self.cfg.fixtureKey, self.cfg.appName)
def loadConfigFile(self):
command = "import "+self.appConfigFileName+" as appCfg"
exec(command)
self.appCfg = appCfg;
self.cfg = appCfg;
def getApplicationKey(self):
print("getting application key for "+self.appCfg.appName)
key = Key()
keyFile = self.appCfg.keyFile
key.fromPEM(filename=keyFile)
self.appKey = key
self.key = key
def start(self):
print "starting "+self.cfg.appName
#self.allWhite()
#self.allBlack()
#self.spazz()
def spazz(self):
for i in range(1,500000):
self.allWhite()
self.allBlack()
def allWhite(self):
for d in self.cfg.names:
if d['name'] != "incandescent":
print d['name']
self.buildAndSendInterest(d['name'],255,255,255)
def allBlack(self):
for d in self.cfg.names:
if d['name'] != "incandescent":
print d['name']
self.buildAndSendInterest(d['name'],0,0,0)
def sendAllLights(self,r,g,b):
for d in self.cfg.names:
if d['name'] != "incandescent":
self.buildAndSendInterest(d['name'],r,g,b)
return
def hx(self, inum):
num = hex(inum)[2:]
if (len(num) == 1):
num = '0'+num
#print num
return str(num)
def buildAndSendInterest(self,device,r,g,b):
rx = self.hx(r)
gx = self.hx(g)
bx = self.hx(b)
CLI = device+"/setRGB/"+rx+gx+bx
#print CLI
self.sendSignedInterest(CLI)
def sendInterest(self,command):
n = Name.Name(self.cfg.appPrefix)
print("\nInterest espressing for "+str(n))
n += command
i = Interest.Interest()
print("Interest sending to "+str(n))
co = self.handle.get(n,i,20)
if not not co:
#if co is not empty, print result for debugging
print("content: "+str(co.content))
pass
def sendSignedInterest(self,command):
fullURI = self.cfg.appPrefix + command
#print fullURI
i = Interest()
#build keyLocator to append to interest for NameCrypto on upcall
keyLoc = pyccn.KeyLocator(self.key)
keyLocStr = _pyccn.dump_charbuf(keyLoc.ccn_data)
nameAndKeyLoc = Name(str(fullURI))
#print("there are "+str(len(nameAndKeyLoc))+" components")
nameAndKeyLoc += keyLocStr
#print("there are "+str(len(nameAndKeyLoc))+" components after adding keyLocStr")
t0 = time()
authName = NameCrypto.authenticate_command(self.state, nameAndKeyLoc, self.cfg.appName, self.cryptoKey)
t1 = time()
#print "elapsed sign", t1-t0
#print authName.components
t0 = time()
co = self.handle.expressInterest(authName,self)
t1 = time()
return pyccn.RESULT_OK
senderclosure = SenderClosure()
receiverclosure = ReceiverClosure()
sender_handle = CCN()
receiver_handle = CCN()
#Looks like the CCNx API doesn't deliver messages
#that we sent to ourselves, so we just push it
sender_handle.setInterestFilter(n, senderclosure)
#senderclosure.upcall(1, None)
i = Interest()
receiver_handle.expressInterest(n, receiverclosure, i)
upcall_called = False
print("Running loops")
#So sender closure is called
#sender_handle.run(500)
#So receiver closure is called
#receiver_handle.run(500)
# New way of doing this
event_loop = pyccn.EventLoop(sender_handle, receiver_handle)
event_loop.run()
from pyccn import CCN, Name, Interest, Closure
from time import sleep
worked = False
class MyClosure(Closure):
def upcall(self, kind, upcallInfo):
global worked
print("Got response")
print(kind)
print(upcallInfo)
worked = True
n = Name("ccnx:/ccnx/ping")
i = Interest()
closure = MyClosure()
c = CCN()
res = c.expressInterest(n, closure, i)
print(res)
#causes crashes
c.run(10)
print("Ha!")
assert (worked)
class sequencer(Closure):
def __init__(self, configFileName):
self.appConfigFileName = configFileName
self.loadConfigFile()
self.handle = CCN()
self.getApplicationKey()
#nameCrypto
self.state = NameCrypto.new_state()
self.cryptoKey = NameCrypto.generate_application_key(self.cfg.fixtureKey, self.cfg.appName)
self.count = 0
def loadConfigFile(self):
command = "import "+self.appConfigFileName+" as appCfg"
exec(command)
self.appCfg = appCfg;
self.cfg = appCfg;
def getApplicationKey(self):
#print("getting application key for "+self.appCfg.appName)
key = Key()
keyFile = self.appCfg.keyFile
key.fromPEM(filename=keyFile)
self.appKey = key
self.key = key
def start(self):
#print "starting "+self.cfg.appName
self.startTime = time.time()
#self.play()
#self.send()
#self.discoProfile()
#self.disco()
#self.mobileDisco()
#self.discoArt()
#self.allWhite()
self.allBlack()
#self.spazz()
def spazz(self):
for i in range(1,500000):
self.allWhite()
self.allBlack()
def allWhite(self):
for d in self.cfg.names:
if d['name'] != "incandescent":
print d['name']
self.buildAndSendInterest(d['name'],255,255,255)
def allBlack(self):
for d in self.cfg.names:
if d['name'] != "incandescent":
print d['name']
self.buildAndSendInterest(d['name'],0,0,0)
self.buildAndSendArtInterest('incandescent',0,)
def disco(self):
print "fading..."
for d in self.cfg.names:
if d['name'] != "incandescent":
print d['name']
r = b = g = 0
#red
for i in range(0,85):
r=i
self.buildAndSendInterest(d['name'],r*3,g*3,b*3)
for i in range(0,85):
r=0
g=i
self.buildAndSendInterest(d['name'],r*3,g*3,b*3)
for i in range(0,85):
g=0
b=i
self.buildAndSendInterest(d['name'],r*3,g*3,b*3)
self.buildAndSendInterest(d['name'],0,0,0)
self.buildAndSendInterest(d['name'],255,255,255)
self.buildAndSendInterest(d['name'],0,0,0)
self.buildAndSendInterest(d['name'],255,255,255)
self.buildAndSendInterest(d['name'],0,0,0)
self.buildAndSendInterest(d['name'],0,0,0)
return
def discoProfile(self):
print "fading..."
for d in self.cfg.names:
if d['name'] != "incandescent":
print d['name']
r = b = g = 0
#red
for i in range(0,85):
r=i
self.buildAndSendInterest(d['name'],r*3,g*3,b*3)
for i in range(0,85):
r=0
g=i
self.buildAndSendInterest(d['name'],r*3,g*3,b*3)
for i in range(0,85):
g=0
b=i
self.buildAndSendInterest(d['name'],r*3,g*3,b*3)
self.buildAndSendInterest(d['name'],0,0,0)
self.buildAndSendInterest(d['name'],255,255,255)
self.buildAndSendInterest(d['name'],0,0,0)
self.buildAndSendInterest(d['name'],255,255,255)
self.buildAndSendInterest(d['name'],0,0,0)
self.buildAndSendInterest(d['name'],0,0,0)
print "DONE"
self.sendSignedInterest("whatever/profileStop/000000")
self.endTime = time.time()
print "total time is ",(self.endTime - self.startTime)
print "number of interests is ",self.count
print "average time per interest is ",((self.endTime - self.startTime)/self.count)
return
def mobileDisco(self):
print "fading around"
for i in range(0,85):
r = b = g = 0
#red
for i in range(0,85):
r=i
self.sendValToAllLights(r*3,g*3,b*3)
for i in range(0,85):
r=0
g=i
self.sendValToAllLights(r*3,g*3,b*3)
for i in range(0,85):
g=0
b=i
self.sendValToAllLights(r*3,g*3,b*3)
self.sendValToAllLights(0,0,0)
self.sendValToAllLights(255,255,255)
self.sendValToAllLights(0,0,0)
self.sendValToAllLights(255,255,255)
self.sendValToAllLights(0,0,0)
sys.exit()
def sendValToAllLights(self,r,g,b):
for d in self.cfg.names:
self.buildAndSendInterest(d['name'],r,g,b)
def discoArt(self):
print "fading..."
for d in self.cfg.names:
if d['name'] == "incandescent":
print d['name']
r = b = g = 0
#red
for i in range(0,250):
r=i
self.buildAndSendArtInterest(d['name'],r)
self.discoArt()
def hx(self, inum):
num = hex(inum)[2:]
if (len(num) == 1):
num = '0'+num
#print num
return str(num)
def buildAndSendInterest(self,device,r,g,b):
#rx = hex(r)[2:]
#gx = hex(g)[2:]
#bx = hex(b)[2:]
rx = self.hx(r)
gx = self.hx(g)
bx = self.hx(b)
#CLI = self.cfg.interestPrefix+device+"/rgb-8bit-hex/"+rx+gx+bx
CLI = device+"/setRGB/"+rx+gx+bx
#print CLI
self.sendSignedInterest(CLI)
#living-room-right-wall/rgb-8bit-hex/d2741d
#interestPrefix
#ccnx:/ndn/ucla.edu/apps/lighting/TV1/fixture/living-room-right-wall/rgb-8bit-hex/d2741d
def buildAndSendArtInterest(self,device,r):
rx = self.hx(r)
#gx = hex(g)[2:]
#bx = hex(b)[2:]
#rx = self.hx(r)
#CLI = self.cfg.interestPrefix+device+"/rgb-8bit-hex/"+rx+gx+bx
CLI = device+"/setBrightness/"+rx
#print CLI
self.sendSignedInterest(CLI)
#living-room-right-wall/rgb-8bit-hex/d2741d
#interestPrefix
#ccnx:/ndn/ucla.edu/apps/lighting/TV1/fixture/living-room-right-wall/rgb-8bit-hex/d2741d
def sendInterest(self,command):
n = Name(self.cfg.appPrefix)
print("\nInterest espressing for "+str(n))
n += command
#fullURI = self.cfg.interestPrefix + command
#print fullURI
i = Interest.Interest()
#n = Name.Name([fullURI]) #this does not parse correctly
#n = Name.Name(fullURI)
print("Interest sending to "+str(n))
co = self.handle.get(n,i,200)
if not not co:
#if co is not empty, print result for debugging
print("content: "+str(co.content))
def sendSignedInterest(self,command):
self.count = self.count +1
time.sleep(self.cfg.refreshInterval)
fullURI = self.cfg.appPrefix + command
#print fullURI
i = Interest()
#self.state = NameCrypto.new_state()
#build keyLocator to append to interest for NameCrypto on upcall
keyLoc = pyccn.KeyLocator(self.key)
keyLocStr = _pyccn.dump_charbuf(keyLoc.ccn_data)
nameAndKeyLoc = Name(str(fullURI))
#print("there are "+str(len(nameAndKeyLoc))+" components")
nameAndKeyLoc += keyLocStr
#print("there are "+str(len(nameAndKeyLoc))+" components after adding keyLocStr")
#symmetric
authName = NameCrypto.authenticate_command(self.state, nameAndKeyLoc, self.cfg.appName, self.cryptoKey)
#asymmetric
#authName = NameCrypto.authenticate_command_sig(self.state, nameAndKeyLoc, self.cfg.appName, self.key)
#print authName.components
co = self.handle.expressInterest(authName,self)
class CcnxSocket(object):
''' A socket like handler for ccnx operations.
Runs a simple event loop and handles set interest filter, send interest,
and publish data.
Current only one ccnx handle is used, we can use multiple handles if needed,
but there is no such need as of now.
'''
__logger = Logger.get_logger('CcnxSocket')
def __init__(self, *args, **kwargs):
'''
Creates a socket. As of now, we try to get the ccnx key from the default location
'''
super(CcnxSocket, self).__init__()
self.ccnx_key = CCN.getDefaultKey()
self.ccnx_key_locator = pyccn.KeyLocator(self.ccnx_key)
self.ccnx_handle = CCN()
self.event_loop = CcnxLoop(self.ccnx_handle)
def get_signed_info(self, freshness):
'''
Get signed info to be included in the Content Object
Args:
freshness (int): the freshness of the Content Object in seconds
Returns:
a PyCCN.SignedInfo object
'''
si = pyccn.SignedInfo()
si.publisherPublicKeyDigest = self.ccnx_key.publicKeyID
si.type = pyccn.CONTENT_DATA
si.freshnessSeconds = freshness
si.keyLocator = self.ccnx_key_locator
return si
def get_pyccn_name(self, name):
'''Get a valid name for PyCCN. This is useful when the name string is encoded as unicode, as is the usual case in Python. However, PyCCN has problem handling unicode names, raising TypeError as a result.
Args:
name (str): the name string
Returns:
An ascii encoded name string
'''
if isinstance(name, unicode):
return Name(name.encode('ascii', 'ignore'))
else:
return Name(name)
def publish_content(self, name, content, freshness=5):
'''Publish the data as a Content Object
Args:
name (str): the name string
content (bytes): the data bytes
Kwargs:
freshness (int): the freshness in seconds for the Content Object
'''
co = ContentObject()
co.name = self.get_pyccn_name(name)
co.content = content
si = self.get_signed_info(freshness)
co.signedInfo = si
co.sign(self.ccnx_key)
self.ccnx_handle.put(co)
def send_interest(self, name, closure, template=None):
'''Send Interest
Args:
name (str): the name string
closure (PyCCN.Closure): the closure that includes the callbacks to be used by PyCCN for this Interest
Kwargs:
template (PyCCN.Interest): the template for the additional field to be carried in the Interest, such as ChildSelector, Lifetime, AnswerOrigin, etc..
'''
n = self.get_pyccn_name(name)
self.ccnx_handle.expressInterest(n, closure, template)
def register_prefix(self, prefix, closure):
'''Register the prefix under which the user wishes to receive Interests
Args:
prefix (str): the prefix name string
closure (PyCCN.Closure): the closure that includes the callbacks to be used by PyCCN when an Interest with such prefix comes
'''
p = self.get_pyccn_name(prefix)
self.ccnx_handle.setInterestFilter(p, closure)
def start(self):
'''Start the CcnxLoop
'''
start_new_thread(self.event_loop.run, ())
def stop(self):
'''Stop the CcnxLoop
'''
self.event_loop.stop()
def printPresent(self):
print
for obj in tyzxObjects.values():
print obj.id,":", obj.x, obj.y, obj.z, obj.localupdatetime
if __name__ == "__main__":
print "prefix", prefix
processIncoming = ProcessIncoming()
while (True):
T = time.time()
if T-lastdiscovertime > DISCOVER_INTEREST_PERIOD:
interestDiscover.exclude = ExclusionFilter()
interestDiscover.exclude.add_names([Name([key]) for key in tyzxObjects.keys()])
interestDiscover.exclude.add_names([Name([key]) for key in oldObjects])
ccn.expressInterest(interestDiscover.name, processIncoming, interestDiscover)
lastdiscovertime = time.time()
for obj in tyzxObjects.values():
if T-obj.lastinteresttime < UPDATE_INTEREST_PERIOD:
continue
interestUpdate.name = Name(prefix)
interestUpdate.name += str(obj.id)
interestUpdate.exclude = ExclusionFilter()
interestUpdate.exclude.add_any()
n = Name()
n.components.append(versionFromTime(obj.time))
interestUpdate.exclude.add_name(n)
interestUpdate.exclude.add_name(Name([last_version_marker]))
interestUpdate.exclude.add_any()
ccn.expressInterest(interestUpdate.name, processIncoming, interestUpdate)
obj.lastinteresttime = time.time()
