def doPost(self, request):
""" handle POST request for Pi system resources
request: the RequestContext data object
must return a Flask.Response object
"""
bodyJson = request.json
response = []
httpStatusCode = 200
for key, value in bodyJson.items():
try:
timePrint('POST system command: %s=%s' %(key, value))
# use tempfile for output
tempFile = tempfile.NamedTemporaryFile(prefix='pisys-')
tempFileName = tempFile.name
tempFile.close()
command = '%s > %s 2>&1 \n' %(value, tempFileName)
os.system(command)
f = open(tempFileName, "r")
text = f.read()
f.close()
os.remove(tempFileName)
itemStatusCode = 200
itemResponse = { key: value, 'result': text }
except:
itemStatusCode = 400
itemResponse = { KeyResponse: 'InvalidCommand', KeyPropertyValue: value }
if itemStatusCode != 200:
httpStatusCode = itemStatusCode
response.append(itemResponse)
return makeJsonResponse(httpStatusCode, response)
def doPost(self, request):
""" handle POST request for Pi GPIO
request: the RequestContext data object
must return a Flask.Response object
"""
bodyJson = request.json
# todo: handle json with list of pin objects
response = []
httpStatusCode = 200
component = request.paths[1]
for key, value in bodyJson.items():
# case 1: url="/gpio" body="7/value": 0 // OK
# case 2: url=/gpio/7 body="value": 0 // OK
# case 3: url=/gpio/7 body="7/value": 0 // invalid for now
# case 4: url=/gpio/7 body="8/value": 0 // invalid
# prepend the component to form full path such as 7/value
fullPath = component + '/' + key
parts = splitAndTrim(fullPath, '/')
try:
pin = int(parts[0])
intValue = int(value)
property = ''
if len(parts) > 1:
property = parts[1]
pinResponse = piGpio.set(pin, property, intValue)
pinStatusCode = pinResponse.pop(KeyStatusCode, 400)
except:
pinStatusCode = 400
pinResponse = { KeyResponse: 'InvalidPinOrValue', KeyGpioPropertyPin: pin, KeyPropertyValue: value }
if pinStatusCode != 200:
httpStatusCode = pinStatusCode
response.append(pinResponse)
return makeJsonResponse(httpStatusCode, response)
def processRequest(cls, request):
""" process a request by finding the request handler """
method = request.method
key = request.rootPath.lower()
if key in BaseRequestHandler._handlers:
handler = BaseRequestHandler._handlers[key]
timePrint('%s %s client: %s handler: %s' %
(method, request.url, request.remote_addr, handler.name))
try:
if handler.checkAuth(request):
if method == 'GET':
response = handler.doGet(request)
elif method == 'POST':
response = handler.doPost(request)
elif method == 'PUT':
response = handler.doPut(request)
elif method == 'DELETE':
response = handler.doDelete(request)
else:
response = makeJsonResponse(
403, {'response': 'InvalidMethod'})
else:
response = makeJsonResponse(401,
{'response': 'UnAuthorized'})
except Exception as e:
timePrint('Exception handling request: ' + str(e))
traceback.print_exc()
response = makeJsonResponse(
500, {'response': 'Exception: ' + str(e)})
elif len(key) == 0:
# send available discovery paths if rootPath is not specified
result = []
for key in BaseRequestHandler._handlers:
handler = BaseRequestHandler._handlers[key]
#result.append({'name': handler.name, 'path': key, 'url': request.host_url + key})
for item in handler.endpoints(key, request.host_url):
result.append(item)
response = makeJsonResponse(200, result)
else:
timePrint('%s %s client: %s handler: N.A.' %
(method, request.url, request.remote_addr))
response = makeJsonResponse(403, {'response': 'InvalidPath'})
timePrint(
'%s %s client: %s status: %s' %
(method, request.url, request.remote_addr, response.status_code))
return response
def doGet(self, request):
""" handle GET request for smart plug devices
. request: the RequestContext data object
must return a Flask.Response object
"""
deviceId = request.paths[1]
if len(deviceId) == 0:
return makeJsonResponse(
200, self.endpoints(self.rootPaths[0], request.host_url))
httpStatusCode = 200
device = self.deviceList[deviceId]
if device == None:
return makeJsonResponse(400, {KeyResponse: 'InvalidSmartDeviceId'})
node = request.paths[2]
dataId = request.paths[3]
httpStatusCode, response = device.get(node, dataId, request.args)
return makeJsonResponse(httpStatusCode, response)
def doPost(self, request):
""" handle POST request for smart plug devices
. request: the RequestContext data object
must return a Flask.Response object
"""
deviceId = request.paths[1]
if len(deviceId) == 0:
return makeJsonResponse(400, {KeyResponse: 'MissingSmartDeviceId'})
device = self.deviceList[deviceId]
if device == None:
return makeJsonResponse(400, {KeyResponse: 'InvalidSmartDeviceId'})
bodyJson = request.json
response = []
httpStatusCode = 200
node = request.paths[2] # node should be one of ['system', 'cmd']
dataId = request.paths[3]
httpStatusCode, response = device.post(node, dataId, request.json)
return makeJsonResponse(httpStatusCode, response)
def doGet(self, request):
""" handle GET request for Pi GPIO
request: the RequestContext data object
must return a Flask.Response object
"""
component = request.paths[1]
if len(component) == 0:
httpStatusCode, response = piGpio.getAll()
else:
response = piGpio.get(int(component), request.paths[2])
httpStatusCode = response.pop(KeyStatusCode, 400)
return makeJsonResponse(httpStatusCode, response)
def doGet(self, request):
""" handle GET request for PiCar
request: the RequestContext data object
must return a Flask.Response object
"""
component = request.paths[1]
httpStatusCode = 200
try:
if 'ultra' in component:
value = self.commandHandler.car.distance
response = {KeyPropertyKey: 'ultra', KeyPropertyValue: value}
elif 'motor' in component:
value = self.commandHandler.drive.motor.speed
response = {KeyPropertyKey: 'motor', KeyPropertyValue: value}
elif 'servo' in component:
value = self.commandHandler.drive.steering.angle
response = {KeyPropertyKey: 'servo', KeyPropertyValue: value}
elif 'servocamh' in component:
value = self.commandHandler.head.servoH.angle
response = {
KeyPropertyKey: 'servocamh',
KeyPropertyValue: value
}
elif 'servocamv' in component:
value = self.commandHandler.head.servoV.angle
response = {
KeyPropertyKey: 'servocamv',
KeyPropertyValue: value
}
elif 'ledright' in component:
value = self.commandHandler.drive.rightLed.rgb.toRGBStr()
response = {
KeyPropertyKey: 'ledright',
KeyPropertyValue: value
}
elif 'ledleft' in component:
value = self.commandHandler.drive.leftLed.rgb.toRGBStr()
response = {KeyPropertyKey: 'ledleft', KeyPropertyValue: value}
elif 'settings' in component:
response = self.commandHandler.car.config.settings
elif 'ledstrip' in component:
httpStatusCode = 400
response = {KeyPropertyValue: 'NotYetSupported'}
else:
httpStatusCode = 400
response = {KeyResponse: 'InvalidComponent'}
except Exception as e:
print('Exception handling request: ' + str(e))
traceback.print_exc()
httpStatusCode = 500
response = {KeyResponse: 'Exception: ' + str(e)}
return makeJsonResponse(httpStatusCode, response)
def doGet(self, request):
""" handle GET request for temperature/humidity value
request: the RequestContext data object
must return a Flask.Response object
"""
component = request.paths[1]
httpStatusCode = 200
temperature, humidity = self.sensor.read()
if len(component) == 0:
response = {TemperatureKey: temperature, HumidityKey: humidity}
elif 'temp' in component:
response = {TemperatureKey: temperature}
elif 'hum' in component:
response = {HumidityKey: humidity}
else:
httpStatusCode = 400
response = { KeyResponse: 'InvalidPath' }
return makeJsonResponse(httpStatusCode, response)
def doPost(self, request):
""" handle POST request for Pi system resources
request: the RequestContext data object
must return a Flask.Response object
"""
component = request.paths[1]
bodyDict = request.json
response = []
httpStatusCode = 200
try:
timePrint('Post to picar: ' + str(bodyDict))
if 'scan' == component:
# for scan, the bodyDict contains strt end and inc for the scan
response = self.commandHandler.doScanCommand(bodyDict)
httpStatusCode = response.pop(KeyStatusCode, 400)
elif 'settings' in component:
config = self.commandHandler.car.config
oldAutoSave = config.autoSave
config.autoSave = False
for key, value in bodyDict.items():
config.set(key, value)
config.save(forceSave=True)
config.autoSave = oldAutoSave
response = {KeyResponse: 'Settings saved '}
else:
# process all the values in the body
httpStatusCode = 200
comma = ''
for key, value in bodyDict.items():
fullPath = request.path + '/' + key
itemResponse = self.commandHandler.doCommand(
fullPath, value)
#timePrint(response)
statusCode = itemResponse.pop(KeyStatusCode, 400)
if statusCode != 200:
httpStatusCode = statusCode
response.append(itemResponse)
except Exception as e:
print('Exception handling request: ' + str(e))
traceback.print_exc()
httpStatusCode = 500
response = {KeyResponse: 'Exception: ' + str(e)}
return makeJsonResponse(httpStatusCode, response)
def doGet(self, request):
""" handle GET request for Pi system resources
request: the RequestContext data object
must return a Flask.Response object
"""
component = request.paths[1]
httpStatusCode = 200
if len(component) == 0:
response = self.pistats.get_all_info()
elif KeyComponentCpu in component:
response = self.pistats.get_cpu_info()
elif KeyComponentMemmory in component:
response = self.pistats.get_memory_info()
elif KeyComponentStorage in component:
httpStatusCode = 400
response = { KeyResponse: 'NotYetSupported' }
else:
httpStatusCode = 400
response = { KeyResponse: 'InvalidSysComponent' }
return makeJsonResponse(httpStatusCode, response)
def doDelete(self, request):
""" must be implemented by derived class to handle Delete request
request: the RequestContext data object
must return a Flask.Response object
"""
return makeJsonResponse(400, {'response': 'InvalidRequest'})