def handleNavRequest(self, path, requestParam):
#check if we have something behind the navurl
#treat this as a filename and set it ion the request parameter
fname = path[(len(self.server.navurl) + 1):]
if fname is not None and fname != "":
fname = fname.split('?', 1)[0]
if fname != "":
if requestParam.get('filename') is None:
requestParam['filename'] = [fname.encode('utf-8')]
requestType = requestParam.get('request')
if requestType is None:
requestType = 'gps'
else:
requestType = requestType[0]
AVNLog.ld('navrequest', requestParam)
try:
rtj = None
if requestType == 'gps' or requestType == 'self':
rtj = self.handleGpsRequest(requestParam)
elif requestType == 'nmeaStatus':
rtj = self.handleNmeaStatus(requestParam)
elif requestType == 'ais':
rtj = self.handleAISRequest(requestParam)
elif requestType == 'status':
rtj = self.handleStatusRequest(requestParam)
elif requestType == 'debuglevel' or requestType == 'loglevel':
rtj = self.handleDebugLevelRequest(requestParam)
elif requestType == 'listdir' or requestType == 'list':
rtj = self.handleListDir(requestParam)
elif requestType == 'download':
#download requests are special
# the dow not return json...
self.handleDownloadRequest(requestParam)
return
elif requestType == 'upload':
try:
rtj = self.handleUploadRequest(requestParam)
except Exception as e:
AVNLog.error("upload error: %s", unicode(e))
rtj = json.dumps({'status': unicode(e)})
elif requestType == 'delete':
rtj = self.handleDeleteRequest(requestParam)
elif requestType == 'capabilities':
rtj = self.handleCapabilityRequest(requestParam)
elif requestType == 'api':
#new handling for dedicated requests for some handler
type = self.getRequestParam(requestParam, 'type')
rtj = self.handleSpecificRequest(requestParam, type)
else:
#legacy: have the api type as requestType
rtj = self.handleSpecificRequest(requestParam, requestType)
self.sendNavResponse(rtj, requestParam)
except Exception as e:
text = unicode(e)
rtj = json.dumps(
AVNUtil.getReturnData(error=text,
stack=traceback.format_exc()))
self.sendNavResponse(rtj, requestParam)
return
def createOverview(self):
zoomlevels = []
zoomLevelBoundings = {}
connection = sqlite3.connect(self.filename)
if connection is None:
raise Exception("unable to open mbtiles file %s" % (self.filename))
AVNLog.info("opening mbtiles file %s", self.filename)
cu = None
hasAvnavScheme = False
try:
cu = connection.cursor()
for sr in cu.execute("select value from metadata where name=?",
["avnav_scheme"]):
v = sr[0]
if v is not None:
v = v.lower()
if v in ['tms', 'xyz']:
AVNLog.info("setting scheme for %s to %s",
self.filename, v)
self.schemeTMS = False if v == "xyz" else True
self.schemeInconsistent = False
hasAvnavScheme = True
#check if there is a schema entry
for sr in cu.execute("select value from metadata where name=?",
["scheme"]):
v = sr[0]
if v is not None:
v = v.lower()
self.originalScheme = v
if not hasAvnavScheme:
self.schemeInconsistent = True
for zl in cu.execute("select distinct zoom_level from tiles;"):
zoomlevels.append(zl[0])
for zl in zoomlevels:
el = {}
for rowmima in cu.execute(
"select min(tile_row),max(tile_row) from tiles where zoom_level=?",
[zl]):
# names must match getGemfInfo in create_overview
if self.schemeTMS:
el['ymin'] = self.rowToY(zl, rowmima[1])
el['ymax'] = self.rowToY(zl, rowmima[0])
else:
el['ymin'] = self.rowToY(zl, rowmima[0])
el['ymax'] = self.rowToY(zl, rowmima[1])
for colmima in cu.execute(
"select min(tile_column),max(tile_column) from tiles where zoom_level=?",
[zl]):
el['xmin'] = self.colToX(zl, colmima[0])
el['xmax'] = self.colToX(zl, colmima[1])
zoomLevelBoundings[zl] = el
except Exception as e:
AVNLog.error("error reading base info from %s:%s", self.filename,
str(e))
self.zoomlevels = zoomlevels
self.zoomLevelBoundings = zoomLevelBoundings
if cu is not None:
cu.close()
connection.close()
self.changeCount = AVNUtil.utcnow()
def _stopLoop(self):
if self.loop is not None:
try:
self.loop.quit()
except Exception as x:
AVNLog.error("unable to stop dbus event loop %s" % str(x))
self.loop = None
def _newService(self, interface, protocol, name, stype, domain, flags):
AVNLog.info("detected new service %s.%s at %i.%i", stype, name,
interface, protocol)
try:
self.foundServices.add(
FoundService(stype, name, interface, protocol))
except Exception as e:
AVNLog.error("unable to add service: %s", e)
def _runInternal(self):
self.usedResources=[]
AVNLog.info("run started")
try:
self.run()
self.setInfo('main','handler stopped',WorkerStatus.INACTIVE)
except Exception as e:
self.setInfo('main','handler stopped with %s'%str(e),WorkerStatus.ERROR)
AVNLog.error("handler run stopped with exception %s",traceback.format_exc())
self.usedResources=[]
self.currentThread=None
def _deregister(self, description: ServiceDescription) -> object:
if description.group is None:
description.reset()
return
try:
AVNLog.info("deregister")
description.reset()
description.group.Reset()
description.group.Free()
description.group = None
self.deleteInfo(description.getKey())
except Exception as e:
AVNLog.error("unable to deregister: %s", str(e))
self.setInfo(description.getKey(),
"error in deregister %s" % str(e), WorkerStatus.ERROR)
def getAvnavXml(self,upzoom=2):
if not self.isOpen:
return None
try:
data = self.getSources()
options = {}
options['upzoom'] = upzoom
rt = create_overview.getGemfInfo(data, options)
AVNLog.info("created GEMF overview for %s", self.filename)
AVNLog.debug("overview for %s:%s", self.filename, rt)
return rt
except:
AVNLog.error("error while trying to get the overview data for %s %s", self.filename, traceback.format_exc())
return None
def fillInfo(self, baseDir):
routeFile = os.path.join(baseDir, self.name)
try:
if os.path.isfile(routeFile):
content = ""
with open(routeFile, "r", encoding='utf-8') as f:
content = f.read()
parser = gpxparser.GPXParser(content)
gpx = parser.parse()
if gpx.routes is None or len(gpx.routes) == 0:
AVNLog.error("no routes in %s", routeFile)
else:
route = gpx.routes[0]
self.numpoints = len(route.points)
self.length = route.length() / AVNUtil.NM
except Exception as e:
AVNLog.error("error when parsing route %s: %s", routeFile, str(e))
def resolveService(self, type, name):
'''
resove a service (IPv4)
@param type: the service type
@param name: the service name
@return: a tuple (hostname,ip,port) if found or None otherwise
'''
if self.server is None:
return None
try:
res = self.server.ResolveService(self.IF_UNSPEC, self.PROTO_INET,
name, type, "local",
self.PROTO_INET, 0)
return (str(res[5]), str(res[7]), int(res[8]))
except Exception as e:
AVNLog.error("unable to resolve service %s.%s: %s", type, name,
str(e))
return None
def onPreRun(self):
self.currentLegFileName = os.path.join(self.baseDir,
self.currentLegName)
if os.path.exists(self.currentLegFileName):
f = None
try:
f = open(self.currentLegFileName, "r", encoding='utf-8')
strleg = f.read(self.MAXROUTESIZE + 1000)
self.currentLeg = AVNRoutingLeg(json.loads(strleg))
if self.currentLeg.getTo() is not None:
distance = AVNUtil.distanceM(
self.wpToLatLon(self.currentLeg.getFrom()),
self.wpToLatLon(self.currentLeg.getTo()))
AVNLog.info(
"read current leg, route=%s, from=%s, to=%s, length=%fNM"
%
(self.currentLeg.getRouteName(),
str(self.currentLeg.getFrom()),
str(self.currentLeg.getTo()), distance / AVNUtil.NM))
else:
AVNLog.info("read current leg, route=%s, from=%s, to=%s" %
(
self.currentLeg.getRouteName(),
str(self.currentLeg.getFrom()),
"NONE",
))
self.setCurrentLeg(self.currentLeg)
except:
AVNLog.error("error parsing current leg %s: %s" %
(self.currentLegFileName, traceback.format_exc()))
if f is not None:
f.close()
else:
AVNLog.info("no current leg %s found" %
(self.currentLegFileName, ))
self.setCurrentLeg(AVNRoutingLeg({}))
AVNLog.info("router main loop started")
def _publish(self, description: ServiceDescription) -> object:
if description.group is not None:
try:
description.group.Reset()
except:
pass
try:
description.group.Free()
except:
pass
try:
description.group = None
if description.oldKey is not None:
self.deleteInfo(description.oldKey)
else:
self.deleteInfo(description.getKey())
except:
pass
if description.name is None or description.name == '':
return False
description.group = dbus.Interface(
dbus.SystemBus().get_object(self.DBUS_NAME,
self.server.EntryGroupNew()),
self.DBUS_INTERFACE_ENTRY_GROUP)
timeout = self.getFloatParam('timeout')
retries = self.getIntParam('maxRetries')
num = 0
retry = True
self.setInfo(description.getKey(), "trying to register",
WorkerStatus.STARTED)
while retry:
retry = False
AVNLog.info("trying to register %s for %s",
description.currentName, str(self.port))
try:
description.group.AddService(self.IF_UNSPEC, self.PROTO_INET,
dbus.UInt32(0),
description.currentName,
description.type,
self.server.GetDomainName(),
self.server.GetHostNameFqdn(),
description.port, '')
description.group.Commit()
except Exception as e:
AVNLog.warn("unable to register avahi service %s, error: %s",
description.currentName, str(e))
if description.retry(retries):
retry = True
continue
waitTime = timeout * 10
state = description.group.GetState()
while state in [
self.ENTRY_GROUP_REGISTERING, self.ENTRY_GROUP_UNCOMMITED
] and waitTime > 0:
waitTime -= 1
time.sleep(0.1)
state = description.group.GetState()
if state == self.ENTRY_GROUP_COLLISION:
if not description.retry(retries):
AVNLog.error("max retries reached for %s",
description.name)
else:
retry = True
continue
if state != self.ENTRY_GROUP_ESTABLISHED:
try:
description.group.Reset()
except:
pass
description.group = None
self.setInfo(
description.getKey(),
"unable to register service, state=%s" % str(state),
WorkerStatus.ERROR)
return False
description.isRegistered = True
self.setInfo(description.getKey(), "registered", WorkerStatus.NMEA)
self.hostname = self.server.GetHostNameFqdn()
return True
self.setInfo(description.getKey(),
"unable to register service after retries",
WorkerStatus.ERROR)
return False