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Improved cache handling

This commit is contained in:
Mark Qvist 2022-07-02 15:15:47 +02:00
parent 5e072affe4
commit 8cff18f8ce
3 changed files with 35 additions and 27 deletions
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8
RNS/Identity.py
View File

@ -135,8 +135,14 @@ class Identity:
if os.path.isfile(RNS.Reticulum.storagepath+"/known_destinations"):
try:
file = open(RNS.Reticulum.storagepath+"/known_destinations","rb")
Identity.known_destinations = umsgpack.load(file)
loaded_known_destinations = umsgpack.load(file)
file.close()
Identity.known_destinations = {}
for known_destination in loaded_known_destinations:
if len(known_destination) == RNS.Reticulum.TRUNCATED_HASHLENGTH//8:
Identity.known_destinations[known_destination] = loaded_known_destinations[known_destination]
RNS.log("Loaded "+str(len(Identity.known_destinations))+" known destination from storage", RNS.LOG_VERBOSE)
except:
RNS.log("Error loading known destinations from disk, file will be recreated on exit", RNS.LOG_ERROR)

6
RNS/Reticulum.py
View File

@ -126,7 +126,7 @@ class Reticulum:
MDU = MTU - HEADER_MAXSIZE - IFAC_MIN_SIZE
CACHE_TIME = 24*60*60
RESOURCE_CACHE = 24*60*60
JOB_INTERVAL = 15*60
router = None
@ -893,7 +893,7 @@ class Reticulum:
filepath = self.resourcepath + "/" + filename
mtime = os.path.getmtime(filepath)
age = now - mtime
if age > Reticulum.CACHE_TIME:
if age > Reticulum.RESOURCE_CACHE:
os.unlink(filepath)
except Exception as e:
@ -906,7 +906,7 @@ class Reticulum:
filepath = self.cachepath + "/" + filename
mtime = os.path.getmtime(filepath)
age = now - mtime
if age > Reticulum.CACHE_TIME:
if age > RNS.Transport.DESTINATION_TIMEOUT:
os.unlink(filepath)
except Exception as e:

48
RNS/Transport.py
View File

@ -68,7 +68,7 @@ class Transport:
PATH_REQUEST_RW = 2 # Path request random window
LINK_TIMEOUT = RNS.Link.STALE_TIME * 1.25
REVERSE_TIMEOUT = 30*60 # Reverse table entries are removed after max 30 minutes
REVERSE_TIMEOUT = 30*60 # Reverse table entries are removed after 30 minutes
DESTINATION_TIMEOUT = 60*60*24*7 # Destination table entries are removed if unused for one week
MAX_RECEIPTS = 1024 # Maximum number of receipts to keep track of
MAX_RATE_TIMESTAMPS = 16 # Maximum number of announce timestamps to keep per destination
@ -181,29 +181,31 @@ class Transport:
for serialised_entry in serialised_destinations:
destination_hash = serialised_entry[0]
timestamp = serialised_entry[1]
received_from = serialised_entry[2]
hops = serialised_entry[3]
expires = serialised_entry[4]
random_blobs = serialised_entry[5]
receiving_interface = Transport.find_interface_from_hash(serialised_entry[6])
announce_packet = Transport.get_cached_packet(serialised_entry[7])
if announce_packet != None and receiving_interface != None:
announce_packet.unpack()
# We increase the hops, since reading a packet
# from cache is equivalent to receiving it again
# over an interface. It is cached with it's non-
# increased hop-count.
announce_packet.hops += 1
Transport.destination_table[destination_hash] = [timestamp, received_from, hops, expires, random_blobs, receiving_interface, announce_packet]
RNS.log("Loaded path table entry for "+RNS.prettyhexrep(destination_hash)+" from storage", RNS.LOG_DEBUG)
else:
RNS.log("Could not reconstruct path table entry from storage for "+RNS.prettyhexrep(destination_hash), RNS.LOG_DEBUG)
if announce_packet == None:
RNS.log("The announce packet could not be loaded from cache", RNS.LOG_DEBUG)
if receiving_interface == None:
RNS.log("The interface is no longer available", RNS.LOG_DEBUG)
if len(destination_hash) == RNS.Reticulum.TRUNCATED_HASHLENGTH//8:
timestamp = serialised_entry[1]
received_from = serialised_entry[2]
hops = serialised_entry[3]
expires = serialised_entry[4]
random_blobs = serialised_entry[5]
receiving_interface = Transport.find_interface_from_hash(serialised_entry[6])
announce_packet = Transport.get_cached_packet(serialised_entry[7])
if announce_packet != None and receiving_interface != None:
announce_packet.unpack()
# We increase the hops, since reading a packet
# from cache is equivalent to receiving it again
# over an interface. It is cached with it's non-
# increased hop-count.
announce_packet.hops += 1
Transport.destination_table[destination_hash] = [timestamp, received_from, hops, expires, random_blobs, receiving_interface, announce_packet]
RNS.log("Loaded path table entry for "+RNS.prettyhexrep(destination_hash)+" from storage", RNS.LOG_DEBUG)
else:
RNS.log("Could not reconstruct path table entry from storage for "+RNS.prettyhexrep(destination_hash), RNS.LOG_DEBUG)
if announce_packet == None:
RNS.log("The announce packet could not be loaded from cache", RNS.LOG_DEBUG)
if receiving_interface == None:
RNS.log("The interface is no longer available", RNS.LOG_DEBUG)
if len(Transport.destination_table) == 1:
specifier = "entry"