def thisServiceStatus(service):
try:
if service in SERVICE_NAMES:
output = subprocess.Popen(["service", service, "status"],
stdout=subprocess.PIPE)
statusRawInit, errorStr = output.communicate()
if not errorStr is None:
util.debugPrint("Error String detected (status): " +
str(errorStr))
return {STATUS: NOK, ERROR_MESSAGE: errorStr}
statusRaw = statusRawInit.split()
util.debugPrint("statusRaw: " + str(statusRaw))
if "running" in statusRaw:
return {STATUS: OK, SERVICE_STATUS: "Running"}
elif "stopped" in statusRaw:
return {STATUS: OK, SERVICE_STATUS: "Stopped"}
else:
return {STATUS: OK, SERVICE_STATUS: "UNKNOWN"}
else:
util.errorPrint(service + " does not match a service")
return {
STATUS: NOK,
ERROR_MESSAGE: service + " does not match a service"
}
except:
print "Unexpected error:", sys.exc_info()[0]
print sys.exc_info()
traceback.print_exc()
util.logStackTrace(sys.exc_info())
raise
def startStreamingServer(port):
"""
Start the streaming server and accept connections.
"""
global memCache
if memCache is None:
memCache = MemCache()
soc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
l_onoff = 1
l_linger = 0
soc.setsockopt(socket.SOL_SOCKET, socket.SO_LINGER,
struct.pack('ii', l_onoff, l_linger))
portAssigned = False
for p in range(port, port + 10, 2):
try:
print 'Trying port ', p
soc.bind(('0.0.0.0', p))
soc.listen(10)
socketServerPort = p
memCache.setSocketServerPort(p)
portAssigned = True
util.debugPrint("DataStreaming: Bound to port " + str(p))
break
except:
print sys.exc_info()
traceback.print_exc()
util.debugPrint("DataStreaming: Bind failed - retry")
if portAssigned:
global occupancyQueue
socketServer = startSocketServer(soc, socketServerPort)
socketServer.start()
else:
util.errorPrint(
"DataStreaming: Streaming disabled on worker - no port found.")
def sendMail(message, receiver, subject, link=False):
if not Config.isMailServerConfigured():
util.debugPrint("Cant Send mail. Mail server is not configured")
return
try:
util.debugPrint("sendMail: smtpEmail " + Config.getSmtpEmail())
util.debugPrint("sendMail: smtpServer " + Config.getSmtpServer())
server = smtplib.SMTP(Config.getSmtpServer(),
Config.getSmtpPort(),
timeout=30)
sender = Config.getSmtpEmail()
if link:
message = MIMEText(message, 'html')
else:
message = MIMEText(message)
message["From"] = Config.getSmtpEmail()
message["To"] = receiver
message["Subject"] = subject
#message["Content-Type:"] = "text/html"
server.sendmail(sender, [receiver], message.as_string())
server.quit()
except:
print "Unexpected error:", sys.exc_info()[0]
print sys.exc_info()
traceback.print_exc()
util.errorPrint("Unexpected error: sendMail")
util.logStackTrace(sys.exc_info())
def init(jsonData):
threshold = _getThreshold(jsonData)
if threshold is None:
util.errorPrint("Threshold not set for " + str(jsonData))
raise Exception("Threshold not set - configuration error")
jsonData['cutoff'] = int(threshold)
jsonData[FREQ_RANGE] = _getFreqRange(jsonData)
def getResourceData(ws):
"""
Handle resource data streaming requests from the web browser.
Token is of the form <sessionID> => len(parts)==1
"""
try:
util.debugPrint("ResourceDataStreaming:getResourceData")
token = ws.receive()
if token is None: #or len(parts) < 2:
ws.close()
return
sessionId = token
if not authentication.checkSessionId(sessionId, "admin"):
ws.close()
util.debugPrint(
"ResourceDataStreamng:failed to authenticate: user != " +
sessionId)
return
memCache = memcache.Client(['127.0.0.1:11211'], debug=0)
keys = MemCacheKeys.RESOURCEKEYS
resourceData = {}
secondsPerFrame = 1
while True:
for resource in keys:
key = str(resource).encode("UTF-8")
value = memCache.get(key)
if value is not None:
resourceData[str(key)] = float(value)
else:
util.errorPrint("Unrecognized resource key " + key)
client = MongoClient(getDbHost(), 27017)
collection = client.systemResources.dbResources
dbResources = collection.find_one({})
if dbResources is not None and dbResources["Disk"] is not None:
resourceData["Disk"] = float(dbResources["Disk"])
util.debugPrint("resource Data = " +
str(json.dumps(resourceData, indent=4)))
ws.send(json.dumps(resourceData))
sleepTime = secondsPerFrame
gevent.sleep(sleepTime)
except:
traceback.print_exc()
util.debugPrint("Error writing to resource websocket")
util.logStackTrace(traceback)
ws.close()
def restartSensor(sensorId):
memCache = MemCache()
pid = memCache.getStreamingServerPid(sensorId)
if pid != -1:
try:
util.debugPrint("restartSensor: sensorId " + sensorId + " pid " +
str(pid) + " sending sigint")
os.kill(pid, signal.SIGINT)
except:
util.errorPrint("restartSensor: Pid " + str(pid) + " not found")
else:
util.debugPrint("restartSensor: pid not found")
def acquire(self):
if not self.memcacheStarted:
util.errorPrint("Memcache is not started. Locking disabled")
return
counter = 0
while True:
self.mc.add("accountLock", self.key)
val = self.mc.get("accountLock")
if val == self.key:
break
else:
counter = counter + 1
assert counter < 30, "AccountLock counter exceeded."
time.sleep(0.1)
def decrementSubscriptionCount(self, sensorId):
self.acquire()
try:
key = str(OCCUPANCY_SUBSCRIPTION_COUNT + sensorId).encode("UTF-8")
subscriptionCount = self.mc.get(key)
if subscriptionCount is None:
return
else:
subscriptionCount = subscriptionCount - 1
self.mc.set(key, subscriptionCount)
if subscriptionCount < 0:
util.errorPrint(
"DataStreaming: negative subscription count! " +
sensorId)
finally:
self.release()
def log():
if DebugFlags.debug:
data = request.data
jsonValue = json.loads(data)
if "message" in jsonValue:
message = jsonValue["message"]
else:
message = ""
if "ExceptionInfo" in jsonValue:
exceptionInfo = jsonValue["ExceptionInfo"]
else:
exceptionInfo = {}
if len(exceptionInfo) != 0:
util.errorPrint("Client Log Message: " + message)
util.errorPrint("Client Exception Info:")
for i in range(0, len(exceptionInfo)):
util.errorPrint("Exception Message:")
exceptionMessage = exceptionInfo[i]["ExceptionMessage"]
util.errorPrint("Client Stack Trace:")
stackTrace = exceptionInfo[i]["StackTrace"]
util.errorPrint(exceptionMessage)
decodeStackTrace(stackTrace)
if "Traceback" in jsonValue:
traceback = jsonValue["Traceback"]
util.errorPrint("Traceback: " + traceback)
else:
util.debugPrint("Client Log Message: " + message)
return "OK"
def readFromInput(bbuf, conn):
util.debugPrint("DataStreaming:readFromInput")
soc = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sensorCommandDispatcherPid = None
memCache = MemCache()
try:
while True:
lengthString = ""
while True:
lastChar = bbuf.readChar()
if lastChar is None:
time.sleep(0.1)
return
if len(lengthString) > 1000:
raise Exception("Formatting error")
if lastChar == '{':
headerLength = int(lengthString.rstrip())
break
else:
lengthString += str(lastChar)
jsonStringBytes = "{"
while len(jsonStringBytes) < headerLength:
jsonStringBytes += str(bbuf.readChar())
jsonData = json.loads(jsonStringBytes)
if not any(k in jsonData for k in (TYPE, SENSOR_ID, SENSOR_KEY)):
err = "Sensor Data Stream: Missing a required field"
util.errorPrint(err)
util.errorPrint("Invalid message -- closing connection: " +
json.dumps(jsonData, indent=4))
raise Exception("Invalid message")
return
sensorId = jsonData[SENSOR_ID]
global mySensorId
if mySensorId is None:
mySensorId = sensorId
elif mySensorId != sensorId:
raise Exception("Sensor ID mismatch " + mySensorId + " / " +
sensorId)
sensorKey = jsonData[SENSOR_KEY]
if not authentication.authenticateSensor(sensorId, sensorKey):
util.debugPrint("jsonData " + json.dumps(jsonData, indent=4))
util.errorPrint("Sensor authentication failed: " + sensorId +
" sensorKey " + sensorKey)
raise Exception("Authentication failure")
return
if memCache.getStreamingServerPid(sensorId) == -1:
memCache.setStreamingServerPid(sensorId)
elif memCache.getStreamingServerPid(sensorId) != os.getpid():
util.errorPrint(
"Handling connection for this sensor already " +
str(os.getpid()))
try:
os.kill(memCache.getStreamingServerPid(sensorId),
signal.SIGKILL)
memCache.setStreamingServerPid(sensorId)
except:
print "Unexpected error:", sys.exc_info()[0]
print sys.exc_info()
traceback.print_exc()
util.logStackTrace(sys.exc_info())
util.debugPrint(
"Problem killing process " +
str(memCache.getStreamingServerPid(sensorId)))
if memCache.getStreamingCommandDispatcherPid(sensorId) != -1:
try:
os.kill(
memCache.getStreamingCommandDispatcherPid(
sensorId), signal.SIGKILL)
except:
memCache.removeStreamingCommandDispatcherPid(sensorId)
util.debugPrint("Process not found. Proceeding ")
util.debugPrint("DataStreaming: Message = " +
dumps(jsonData, sort_keys=True, indent=4))
sensorObj = SensorDb.getSensorObj(sensorId)
if not sensorObj.isStreamingEnabled(
) or sensorObj.getStreamingParameters() is None:
raise Exception("Streaming is not enabled")
return
# the last time a data message was inserted
if jsonData[TYPE] == DATA:
util.debugPrint("pubsubPort: " +
str(memCache.getPubSubPort(sensorId)))
if "Sys2Detect" not in jsonData:
jsonData[SYS_TO_DETECT] = "LTE"
DataMessage.init(jsonData)
t = Process(target=runSensorCommandDispatchWorker,
args=(conn, sensorId))
t.start()
sensorCommandDispatcherPid = t.pid
childPids.append(sensorCommandDispatcherPid)
cutoff = DataMessage.getThreshold(jsonData)
n = DataMessage.getNumberOfFrequencyBins(jsonData)
sensorId = DataMessage.getSensorId(jsonData)
lastDataMessageReceivedAt[sensorId] = time.time()
lastDataMessageOriginalTimeStamp[
sensorId] = DataMessage.getTime(jsonData)
# Check if the measurement type reported by the sensor
# matches that in the sensordb
measurementType = DataMessage.getMeasurementType(jsonData)
if sensorObj.getMeasurementType() != measurementType:
err = "Measurement type mismatch "
err += sensorObj.getMeasurementType()
err += " / "
err += measurementType
raise Exception(err)
# Check if the time per measurement reported by the sensor
# matches that in the sensordb
timePerMeasurement = sensorObj.getStreamingSecondsPerFrame()
util.debugPrint("StreamingServer: timePerMeasurement " +
str(timePerMeasurement))
if timePerMeasurement != DataMessage.getTimePerMeasurement(
jsonData):
err = "TimePerMeasurement mismatch "
err += str(timePerMeasurement)
err += "/"
err += str(DataMessage.getTimePerMeasurement(jsonData))
raise Exception(err)
# The sampling interval for write to the database.
s = sensorObj.getStreamingSamplingIntervalSeconds()
streamingSamplingIntervalSeconds = s
# The number of measurements per capture
measurementsPerCapture = int(streamingSamplingIntervalSeconds /
timePerMeasurement)
util.debugPrint("StreamingServer: measurementsPerCapture " +
str(measurementsPerCapture))
# The number of power value samples per capture.
samplesPerCapture = int(
(streamingSamplingIntervalSeconds / timePerMeasurement) *
n)
# The number of spectrums per frame sent to the browser.
spectrumsPerFrame = 1
jsonData[SPECTRUMS_PER_FRAME] = spectrumsPerFrame
# The streaming filter of the sensor (MAX_HOLD or AVG)
jsonData[STREAMING_FILTER] = sensorObj.getStreamingFilter()
# The band name sys2detect:minfreq:maxfreq string for the
# reported measurement.
bandName = DataMessage.getFreqRange(jsonData)
# Keep a copy of the last data message for periodic insertion
# into the db
memCache.setLastDataMessage(sensorId, bandName,
json.dumps(jsonData))
# captureBufferCounter is a pointer into the capture buffer.
captureBufferCounter = 0
powerArrayCounter = 0
timingCounter = 0
# initialize the "prev occupancy array"
prevOccupancyArray = [-1 for i in range(0, n)]
occupancyArray = [0 for i in range(0, n)]
occupancyTimer = time.time()
if sensorId not in lastDataMessage:
lastDataMessage[sensorId] = jsonData
powerVal = [0 for i in range(0, n)]
startTime = time.time()
sensorObj = SensorDb.getSensorObj(sensorId)
if sensorObj is None:
raise Exception("Sensor not found")
if sensorObj.getSensorStatus() == DISABLED:
bbuf.close()
raise Exception("Sensor is disabled")
if not sensorObj.isStreamingEnabled():
raise Exception("Streaming is disabled")
enb = sensorObj.isStreamingCaptureEnabled()
isStreamingCaptureEnabled = enb
util.debugPrint("isStreamingCaptureEnabled : " + str(enb) +
" samplesPerCapture " + str(samplesPerCapture))
if isStreamingCaptureEnabled:
sensorData = [0 for i in range(0, samplesPerCapture)]
while True:
data = bbuf.readByte()
if isStreamingCaptureEnabled:
sensorData[captureBufferCounter] = data
powerVal[powerArrayCounter] = data
now = time.time()
if isStreamingCaptureEnabled and captureBufferCounter + 1 == samplesPerCapture:
# Buffer is full so push the data into mongod.
util.debugPrint("Inserting Data message")
captureBufferCounter = 0
# Time offset since the last data message was received.
timeOffset = time.time(
) - lastDataMessageReceivedAt[sensorId]
# Offset the capture by the time since the DataMessage header was received.
lastDataMessage[sensorId]["t"] = int(
lastDataMessageOriginalTimeStamp[sensorId] +
int(timeOffset))
lastDataMessage[sensorId][
"nM"] = measurementsPerCapture
lastDataMessage[sensorId]["mPar"]["td"] = int(
now - occupancyTimer)
lastDataMessage[sensorId]["mPar"][
"tm"] = timePerMeasurement
headerStr = json.dumps(lastDataMessage[sensorId],
indent=4)
util.debugPrint("StreamingServer: headerStr " +
headerStr)
headerLength = len(headerStr)
if isStreamingCaptureEnabled:
# Start the db operation in a seperate process
p = Process(target=populate_db.put_data,
args=(headerStr, headerLength),
kwargs={
"filedesc": None,
"powers": sensorData
})
p.start()
lastDataMessageInsertedAt[sensorId] = time.time()
occupancyTimer = time.time()
else:
captureBufferCounter = captureBufferCounter + 1
if data > cutoff:
occupancyArray[powerArrayCounter] = 1
else:
occupancyArray[powerArrayCounter] = 0
# print "occupancyArray", occupancyArray
if (powerArrayCounter + 1) == n:
# Get the occupancy subscription counter.
if memCache.getSubscriptionCount(sensorId) != 0:
if not np.array_equal(occupancyArray,
prevOccupancyArray):
port = memCache.getPubSubPort(sensorId)
soc.sendto(
json.dumps({sensorId: occupancyArray}),
("localhost", port))
prevOccupancyArray = np.array(occupancyArray)
# sending data as CSV values to the browser
listenerCount = memCache.getStreamingListenerCount(
sensorId)
if listenerCount > 0:
sensordata = str(powerVal)[1:-1].replace(" ", "")
memCache.setSensorData(sensorId, bandName,
sensordata)
# Record the occupancy for the measurements.
# Allow for 10% jitter.
if timingCounter == 1000 and checkForDataRate:
if (((now - startTime) / 1000.0 <
timePerMeasurement / 2)
or ((now - startTime) / 1000.0 >
timePerMeasurement * 2)):
print " delta ", now - startTime, "global counter ", powerArrayCounter
util.errorPrint(
"Data coming in too fast or too slow - sensor configuration problem."
)
raise Exception(
"Data coming in too fast - sensor configuration problem."
)
else:
startTime = now
lastdataseen = now
if listenerCount > 0:
memCache.setLastDataSeenTimeStamp(
sensorId, bandName, lastdataseen)
powerArrayCounter = 0
else:
powerArrayCounter = powerArrayCounter + 1
timingCounter = timingCounter + 1
elif jsonData[TYPE] == SYS:
util.debugPrint(
"DataStreaming: Got a System message -- adding to the database"
)
populate_db.put_data(jsonStringBytes, headerLength)
elif jsonData[TYPE] == LOC:
util.debugPrint(
"DataStreaming: Got a Location Message -- adding to the database"
)
populate_db.put_data(jsonStringBytes, headerLength)
finally:
util.debugPrint("Closing sockets for sensorId " + sensorId)
memCache.removeStreamingServerPid(sensorId)
port = memCache.getSensorArmPort(sensorId)
sendCommandToSensor(
sensorId, json.dumps({
"sensorId": sensorId,
"command": "exit"
}))
memCache.releaseSensorArmPort(sensorId)
bbuf.close()
time.sleep(1)
soc.close()
# kill the command dispatcher for good measure.
try:
if sensorCommandDispatcherPid is not None:
os.kill(sensorCommandDispatcherPid, signal.SIGKILL)
except:
util.debugPrint("Process not found. " +
str(sensorCommandDispatcherPid))
def readResourceUsage():
util.debugPrint("ResourceStreaming:dataFromStreamingServer_PID")
timePerMeasurement = 0.2
timePerCapture = 1 # 1 sec per capture
measurementsPerCapture = timePerCapture / timePerMeasurement
try:
while True:
if "firstTime" not in vars():
firstTime = True
if "netSentValuePrev" not in vars():
netSentValuePrev = 0
if "netRecvValuePrev" not in vars():
netRecvValuePrev = 0
cpuData = 0
vmemData = 0
netSentData = 0
netRecvData = 0
bufferCounter = 0
while True:
# all data is by system as a percent usage, could be modified to be by process
#cpu = p.cpu_percent()
#vmem = p.virtual_memory()._asdict()['percent']
cpu = psutil.cpu_percent()
vmem = psutil.virtual_memory()._asdict()['percent']
hostName = Config.getHostName()
monitoredInterface = None
try:
if hostName != "UNKNOWN":
ipAddress = socket.gethostbyname(hostName)
for interface in netifaces.interfaces():
if netifaces.AF_INET in netifaces.ifaddresses(
interface):
for link in netifaces.ifaddresses(interface)[
netifaces.AF_INET]:
if link['addr'] == ipAddress:
monitoredInterface = interface
break
except:
util.errorPrint("Could not resolve hostname " + hostName)
if monitoredInterface is not None:
netSent = psutil.net_io_counters(
pernic=True)[monitoredInterface]._asdict(
)['bytes_sent']
netRecv = psutil.net_io_counters(
pernic=True)[monitoredInterface]._asdict(
)['bytes_recv']
else:
netSent = 0
netRecv = 0
cpuData = cpuData + cpu
vmemData = vmemData + vmem
netSentData = netSentData + netSent
netRecvData = netRecvData + netRecv
bufferCounter = bufferCounter + 1
if bufferCounter == measurementsPerCapture:
# Buffer is full so push the data into memcache.
bufferCounter = 0
# avg values:
cpuValue = cpuData / measurementsPerCapture
vmemValue = vmemData / measurementsPerCapture
netSentValueNew = netSentData / measurementsPerCapture
netRecvValueNew = netRecvData / measurementsPerCapture
if not firstTime:
netSentValue = (netSentValueNew -
netSentValuePrev) / timePerCapture
netRecvValue = (netRecvValueNew -
netRecvValuePrev) / timePerCapture
else:
netSentValue = 0
netRecvValue = 0
firstTime = False
netSentValuePrev = netSentValueNew
netRecvValuePrev = netRecvValueNew
memCache.setResourceData(MemCacheKeys.RESOURCEKEYS_CPU,
cpuValue)
memCache.setResourceData(MemCacheKeys.RESOURCEKEYS_VIRTMEM,
vmemValue)
memCache.setResourceData(
MemCacheKeys.RESOURCEKEYS_NET_SENT, netSentValue)
memCache.setResourceData(
MemCacheKeys.RESOURCEKEYS_NET_RECV, netRecvValue)
break
sleepTime = timePerMeasurement
time.sleep(sleepTime)
except:
print "Unexpected error:", sys.exc_info()[0]
print sys.exc_info()
import traceback
traceback.print_exc()
util.logStackTrace(sys.exc_info())
