def newNodeRequest():
nonlocal nr_nodes
with nr_nodes_cv:
nr_nodes += 1
DhtNetwork.log("Node joining the DHT.", "(now "+str(nr_nodes)+" nodes on the dht)")
nr_nodes_cv.notify()
random.choice(wb.procs).sendNodesRequest(DhtNetworkSubProcess.NEW_NODE_REQ)
def _trigger_dp(self, trigger_nodes, _hash, count=1):
"""
Triggers the data persistence over time. In order to this, `count` nodes
are created with an id around the hash of a value.
@param trigger_nodes: List of created nodes. The nodes created in this
function are append to this list.
@type trigger_nodes: list
@param _hash: Is the id of the value around which creating nodes.
@type _hash: InfoHash
@param count: The number of nodes to create with id around the id of
value.
@type count: int
"""
_hash_str = _hash.toString().decode()
_hash_int = int(_hash_str, 16)
for i in range(int(-count/2), int(count/2)+1):
_hash_str = '{:40x}'.format(_hash_int + i)
config = DhtConfig()
config.setNodeId(InfoHash(_hash_str.encode()))
n = DhtRunner()
n.run(config=config)
n.bootstrap(self._bootstrap.ip4,
str(self._bootstrap.port))
DhtNetwork.log('Node','['+_hash_str+']',
'started around', _hash.toString().decode()
if n.isRunning() else
'failed to start...'
)
trigger_nodes.append(n)
def shutdownNodeRequest():
nonlocal nr_nodes
with nr_nodes_cv:
nr_nodes -= 1
DhtNetwork.log("Node quitting the DHT.", "(now "+str(nr_nodes)+" nodes on the dht)")
nr_nodes_cv.notify()
random.choice(wb.procs).sendNodesRequest(DhtNetworkSubProcess.SHUTDOWN_NODE_REQ)
def putRequest():
nonlocal hashes, values, nr_values
nr_values += 1
DhtNetwork.log("Random value put on the DHT.",
"(now " + str(nr_values) + " values on the dht)")
random.choice(wb.procs).sendNodePutRequest(
random.choice(hashes).toString(), random.choice(values))
def _trigger_dp(self, trigger_nodes, _hash, count=1):
"""
Triggers the data persistence over time. In order to this, `count` nodes
are created with an id around the hash of a value.
@param trigger_nodes: List of created nodes. The nodes created in this
function are append to this list.
@type trigger_nodes: list
@param _hash: Is the id of the value around which creating nodes.
@type _hash: InfoHash
@param count: The number of nodes to create with id around the id of
value.
@type count: int
"""
_hash_str = _hash.toString().decode()
_hash_int = int(_hash_str, 16)
for i in range(int(-count / 2), int(count / 2) + 1):
_hash_str = '{:40x}'.format(_hash_int + i)
config = DhtConfig()
config.setNodeId(InfoHash(_hash_str.encode()))
n = DhtRunner()
n.run(config=config)
n.bootstrap(self._bootstrap.ip4, str(self._bootstrap.port))
DhtNetwork.log(
'Node', '[' + _hash_str + ']', 'started around',
_hash.toString().decode()
if n.isRunning() else 'failed to start...')
trigger_nodes.append(n)
def _dhtPut(self, producer, _hash, *values):
for val in values:
with FeatureTest.lock:
DhtNetwork.log('[PUT]: %s' % val)
FeatureTest.done += 1
producer.put(_hash, val, DhtFeatureTest.putDoneCb)
while FeatureTest.done > 0:
FeatureTest.lock.wait()
def shutdownNodeRequest():
nonlocal nr_nodes
with nr_nodes_cv:
nr_nodes -= 1
DhtNetwork.log("Node quitting the DHT.",
"(now " + str(nr_nodes) + " nodes on the dht)")
nr_nodes_cv.notify()
random.choice(wb.procs).sendNodesRequest(
DhtNetworkSubProcess.SHUTDOWN_NODE_REQ)
def newNodeRequest():
nonlocal nr_nodes
with nr_nodes_cv:
nr_nodes += 1
DhtNetwork.log("Node joining the DHT.",
"(now " + str(nr_nodes) + " nodes on the dht)")
nr_nodes_cv.notify()
random.choice(wb.procs).sendNodesRequest(
DhtNetworkSubProcess.NEW_NODE_REQ)
def _dhtGet(self, consumer, _hash):
DhtFeatureTest.foreignValues = []
DhtFeatureTest.foreignNodes = []
with FeatureTest.lock:
FeatureTest.done += 1
DhtNetwork.log('[GET]:', _hash.toString())
consumer.get(_hash, DhtFeatureTest.getcb, DhtFeatureTest.getDoneCb)
while FeatureTest.done > 0:
FeatureTest.lock.wait()
def _dhtPut(self, producer, _hash, *values):
for val in values:
with FeatureTest.lock:
vstr = val.__str__()[:100]
DhtNetwork.log('[PUT]: %s' % vstr + ("..." if len(vstr) > 100 else ""))
FeatureTest.done += 1
while FeatureTest.done > 0:
producer.put(_hash, val, DhtFeatureTest.putDoneCb)
FeatureTest.lock.wait()
def _dhtGet(self, consumer, _hash):
DhtFeatureTest.foreignValues = []
DhtFeatureTest.foreignNodes = []
with FeatureTest.lock:
FeatureTest.done += 1
while FeatureTest.done > 0:
DhtNetwork.log('[GET]:', _hash.toString())
consumer.get(_hash, DhtFeatureTest.getcb, DhtFeatureTest.getDoneCb)
FeatureTest.lock.wait()
def donecb(ok, nodes):
nonlocal bootstrap, lock, done, times
t = time.time()-start
with lock:
if not ok:
DhtNetwork.log("failed !")
times.append(t)
done -= 1
lock.notify()
def donecb(ok, nodes):
nonlocal bootstrap, lock, done, times
t = time.time()-start
with lock:
if not ok:
DhtNetwork.log("failed !")
times.append(t)
done -= 1
lock.notify()
def getDoneCb(ok, nodes):
with FeatureTest.lock:
if not ok:
DhtNetwork.log("[GET]: failed!")
else:
for node in nodes:
if not node.getNode().isExpired():
DhtFeatureTest.foreignNodes.append(node.getId().toString())
FeatureTest.done -= 1
FeatureTest.lock.notify()
def _dhtPut(self, producer, _hash, *values):
with FeatureTest.lock:
for val in values:
vstr = val.__str__()[:100]
DhtNetwork.log('[PUT]:', _hash.toString(), '->',
vstr + ("..." if len(vstr) > 100 else ""))
FeatureTest.done += 1
producer.put(_hash, val, DhtFeatureTest.putDoneCb)
while FeatureTest.done > 0:
FeatureTest.lock.wait()
def getDoneCb(ok, nodes):
with FeatureTest.lock:
if not ok:
DhtNetwork.log("[GET]: failed!")
else:
for node in nodes:
if not node.getNode().isExpired():
DhtFeatureTest.foreignNodes.append(node.getId().toString())
FeatureTest.done -= 1
FeatureTest.lock.notify()
def _insertTest(self):
"""TODO: Docstring for _massIndexTest.
"""
bootstrap = self._bootstrap
bootstrap.resize(2)
dht = bootstrap.get(1)
NUM_DIG = max(math.log(self._num_keys, 2) / 4,
5) # at least 5 digit keys.
keyspec = collections.OrderedDict([('foo', NUM_DIG)])
pht = Pht(b'foo_index', keyspec, dht)
DhtNetwork.log('PHT has', pht.MAX_NODE_ENTRY_COUNT,
'node' + ('s' if pht.MAX_NODE_ENTRY_COUNT > 1 else ''),
'per leaf bucket.')
keys = [{
[_ for _ in keyspec.keys()][0]:
''.join(random.SystemRandom().choice(string.hexdigits)
for _ in range(NUM_DIG)).encode()
} for n in range(self._num_keys)]
all_entries = {}
# Index all entries.
for key in keys:
PhtTest.key = key
with FeatureTest.lock:
time_taken = timer(pht.insert, key, IndexValue(random_hash()),
PhtTest.insertDoneCb)
if self._timer:
DhtNetwork.log('This insert step took : ', time_taken,
'second')
FeatureTest.lock.wait()
time.sleep(1)
# Recover entries now that the trie is complete.
for key in keys:
PhtTest.key = key
with FeatureTest.lock:
time_taken = timer(pht.lookup, key, PhtTest.lookupCb,
PhtTest.lookupDoneCb)
if self._timer:
DhtNetwork.log('This lookup step took : ', time_taken,
'second')
FeatureTest.lock.wait()
all_entries[PhtTest.prefix] = [
e.__str__() for e in PhtTest.indexEntries
]
for p in all_entries.keys():
DhtNetwork.log('All entries under prefix', p, ':')
DhtNetwork.log(all_entries[p])
PhtTest.drawTrie(all_entries)
def _insertTest(self):
"""TODO: Docstring for _massIndexTest.
"""
bootstrap = self._bootstrap
bootstrap.resize(2)
dht = bootstrap.get(1)
NUM_DIG = max(math.log(self._num_keys, 2)/4, 5) # at least 5 digit keys.
keyspec = collections.OrderedDict([('foo', NUM_DIG)])
pht = Pht(b'foo_index', keyspec, dht)
DhtNetwork.log('PHT has',
pht.MAX_NODE_ENTRY_COUNT,
'node'+ ('s' if pht.MAX_NODE_ENTRY_COUNT > 1 else ''),
'per leaf bucket.')
keys = [{
[_ for _ in keyspec.keys()][0] :
''.join(random.SystemRandom().choice(string.hexdigits)
for _ in range(NUM_DIG)).encode()
} for n in range(self._num_keys)]
all_entries = {}
# Index all entries.
for key in keys:
PhtTest.key = key
with FeatureTest.lock:
time_taken = timer(pht.insert, key, IndexValue(random_hash()), PhtTest.insertDoneCb)
if self._timer:
DhtNetwork.log('This insert step took : ', time_taken, 'second')
FeatureTest.lock.wait()
time.sleep(1)
# Recover entries now that the trie is complete.
for key in keys:
PhtTest.key = key
with FeatureTest.lock:
time_taken = timer(pht.lookup, key, PhtTest.lookupCb, PhtTest.lookupDoneCb)
if self._timer:
DhtNetwork.log('This lookup step took : ', time_taken, 'second')
FeatureTest.lock.wait()
all_entries[PhtTest.prefix] = [e.__str__()
for e in PhtTest.indexEntries]
for p in all_entries.keys():
DhtNetwork.log('All entries under prefix', p, ':')
DhtNetwork.log(all_entries[p])
PhtTest.drawTrie(all_entries)
def get_bootstrap(self):
if not self.local_bootstrap:
self.local_bootstrap = DhtNetwork(
iface='br' + self.ifname,
first_bootstrap=False if self.remote_bootstrap else True,
bootstrap=[(self.remote_bootstrap,
self.bs_port)] if self.remote_bootstrap else [])
return self.local_bootstrap
def lookupCb(vals, prefix):
PhtTest.indexEntries = list(vals)
PhtTest.prefix = prefix.decode()
DhtNetwork.log('Index name: <todo>')
DhtNetwork.log('Leaf prefix:', prefix)
for v in vals:
DhtNetwork.log('[ENTRY]:', v)
def _replaceClusterTest(self):
"""
It replaces all clusters one after the other.
"""
clusters = 8
bootstrap = self.bootstrap
bootstrap.resize(3)
consumer = bootstrap.get(1)
producer = bootstrap.get(2)
myhash = random_hash()
local_values = [Value(b'foo'), Value(b'bar'), Value(b'foobar')]
self._dhtPut(producer, myhash, *local_values)
self._dhtGet(consumer, myhash)
initial_nodes = DhtFeatureTest.foreignNodes
DhtNetwork.log('Replacing', clusters, 'random clusters successively...')
for n in range(clusters):
i = random.randint(0, len(self._workbench.procs)-1)
proc = self._workbench.procs[i]
DhtNetwork.log('Replacing', proc)
proc.sendNodesRequest(DhtNetworkSubProcess.SHUTDOWN_CLUSTER_REQ)
self._workbench.stop_cluster(i)
self._workbench.start_cluster(i)
DhtNetwork.log('[GET]: trying to fetch persistent values')
self._dhtGet(consumer, myhash)
new_nodes = set(DhtFeatureTest.foreignNodes) - set(initial_nodes)
self._result(local_values, new_nodes)
def _replaceClusterTest(self):
"""
It replaces all clusters one after the other.
"""
#clusters = opts['clusters'] if 'clusters' in opts else 5
clusters = 5
bootstrap = self.bootstrap
bootstrap.resize(3)
consumer = bootstrap.get(1)
producer = bootstrap.get(2)
myhash = random_hash()
local_values = [Value(b'foo'), Value(b'bar'), Value(b'foobar')]
self._dhtPut(producer, myhash, *local_values)
self._dhtGet(consumer, myhash)
initial_nodes = DhtFeatureTest.foreignNodes
DhtNetwork.log('Replacing', clusters, 'random clusters successively...')
for n in range(clusters):
i = random.randint(0, len(self._workbench.procs)-1)
proc = self._workbench.procs[i]
DhtNetwork.log('Replacing', proc)
proc.sendShutdown()
self._workbench.stop_cluster(i)
self._workbench.start_cluster(i)
DhtNetwork.log('[GET]: trying to fetch persistent values')
self._dhtGet(consumer, myhash)
new_nodes = set(DhtFeatureTest.foreignNodes) - set(initial_nodes)
self._result(local_values, new_nodes)
def lookupCb(vals, prefix):
PhtTest.indexEntries = list(vals)
PhtTest.prefix = prefix.decode()
DhtNetwork.log('Index name: <todo>')
DhtNetwork.log('Leaf prefix:', prefix)
for v in vals:
DhtNetwork.log('[ENTRY]:', v)
def _getsTimesTest(self):
"""
Tests for performance of the DHT doing multiple get() operation.
"""
bootstrap = self.bootstrap
plt.ion()
fig, axes = plt.subplots(2, 1)
fig.tight_layout()
lax = axes[0]
hax = axes[1]
lines = None#ax.plot([])
#plt.ylabel('time (s)')
hax.set_ylim(0, 2)
# let the network stabilise
plt.pause(60)
#start = time.time()
times = []
lock = threading.Condition()
done = 0
def getcb(v):
nonlocal bootstrap
DhtNetwork.log("found", v)
return True
def donecb(ok, nodes):
nonlocal bootstrap, lock, done, times
t = time.time()-start
with lock:
if not ok:
DhtNetwork.log("failed !")
times.append(t)
done -= 1
lock.notify()
def update_plot():
nonlocal lines
while lines:
l = lines.pop()
l.remove()
del l
lines = plt.plot(times, color='blue')
plt.draw()
def run_get():
nonlocal done
done += 1
start = time.time()
bootstrap.front().get(InfoHash.getRandom(), getcb, lambda ok, nodes: donecb(ok, nodes, start))
plt.pause(5)
plt.show()
update_plot()
times = []
for n in range(10):
self._workbench.replace_cluster()
plt.pause(2)
DhtNetwork.log("Getting 50 random hashes succesively.")
for i in range(50):
with lock:
done += 1
start = time.time()
bootstrap.front().get(InfoHash.getRandom(), getcb, donecb)
while done > 0:
lock.wait()
update_plot()
update_plot()
print("Took", np.sum(times), "mean", np.mean(times), "std", np.std(times), "min", np.min(times), "max", np.max(times))
print('GET calls timings benchmark test : DONE. ' \
'Close Matplotlib window for terminating the program.')
plt.ioff()
plt.show()
def _delete(self):
"""
Tests for performance of get() and put() operations on the network while
deleting around the target hash.
"""
bootstrap = self.bootstrap
bootstrap.resize(3)
consumer = bootstrap.get(1)
producer = bootstrap.get(2)
myhash = random_hash()
local_values = [Value(b'foo'), Value(b'bar'), Value(b'foobar')]
for _ in range(max(1, int(self._workbench.node_num/32))):
self._dhtGet(consumer, myhash)
DhtNetwork.log("Waiting 15 seconds...")
time.sleep(15)
self._dhtPut(producer, myhash, *local_values)
#checking if values were transfered
self._dhtGet(consumer, myhash)
DhtNetwork.log('Values are found on :')
for node in DhtFeatureTest.foreignNodes:
DhtNetwork.log(node)
if not DhtFeatureTest.successfullTransfer(local_values, DhtFeatureTest.foreignValues):
if DhtFeatureTest.foreignValues:
DhtNetwork.log('[GET]: Only ', len(DhtFeatureTest.foreignValues) ,' on ',
len(local_values), ' values successfully put.')
else:
DhtNetwork.log('[GET]: 0 values successfully put')
DhtNetwork.log('Removing all nodes hosting target values...')
for proc in self._workbench.procs:
DhtNetwork.log('[REMOVE]: sending shutdown request to', proc)
proc.sendNodesRequest(
DhtNetworkSubProcess.SHUTDOWN_NODE_REQ,
DhtFeatureTest.foreignNodes
)
def _multTimeTest(self):
"""
Multiple put() calls are made from multiple nodes to multiple hashes
after what a set of 8 nodes is created around each hashes in order to
enable storage maintenance each nodes. Therefor, this tests will wait 10
minutes for the nodes to trigger storage maintenance.
"""
bootstrap = self.bootstrap
N_PRODUCERS = 16
hashes = []
values = [Value(b'foo')]
nodes = set([])
# prevents garbage collecting of unused flood nodes during the test.
flood_nodes = []
def gottaGetThemAllPokeNodes(nodes=None):
nonlocal consumer, hashes
for h in hashes:
self._dhtGet(consumer, h)
if nodes is not None:
for n in DhtFeatureTest.foreignNodes:
nodes.add(n)
def createNodesAroundHash(_hash, radius=4):
nonlocal flood_nodes
_hash_str = _hash.toString().decode()
_hash_int = int(_hash_str, 16)
for i in range(-radius, radius+1):
_hash_str = '{:40x}'.format(_hash_int + i)
config = DhtConfig()
config.setNodeId(InfoHash(_hash_str.encode()))
n = DhtRunner()
n.run(config=config)
n.bootstrap(self.bootstrap.ip4,
str(self.bootstrap.port))
flood_nodes.append(n)
bootstrap.resize(N_PRODUCERS+2)
consumer = bootstrap.get(1)
producers = (bootstrap.get(n) for n in range(2,N_PRODUCERS+2))
for p in producers:
hashes.append(random_hash())
self._dhtPut(p, hashes[-1], *values)
gottaGetThemAllPokeNodes(nodes=nodes)
DhtNetwork.log("Values are found on:")
for n in nodes:
DhtNetwork.log(n)
DhtNetwork.log("Creating 8 nodes around all of these nodes...")
for _hash in hashes:
createNodesAroundHash(_hash)
DhtNetwork.log('Waiting 10 minutes for normal storage maintenance.')
time.sleep(10*60)
DhtNetwork.log('Deleting old nodes from previous search.')
for proc in self._workbench.procs:
DhtNetwork.log('[REMOVE]: sending shutdown request to', proc)
proc.sendNodesRequest(
DhtNetworkSubProcess.REMOVE_NODE_REQ,
nodes
)
# new consumer (fresh cache)
bootstrap.resize(N_PRODUCERS+3)
consumer = bootstrap.get(N_PRODUCERS+2)
nodes_after_time = set([])
gottaGetThemAllPokeNodes(nodes=nodes_after_time)
self._result(values, nodes_after_time - nodes)
def getcb(v):
nonlocal bootstrap
DhtNetwork.log("found", v)
return True
def getcb(value):
vstr = value.__str__()[:100]
DhtNetwork.log('[GET]: %s' % vstr + ("..." if len(vstr) > 100 else ""))
DhtFeatureTest.foreignValues.append(value)
return True
def insertDoneCb(ok):
DhtNetwork.log('[INSERT]:', PhtTest.key, "--",
"success!" if ok else "Fail...")
with FeatureTest.lock:
FeatureTest.lock.notify()
def getcb(v):
nonlocal bootstrap
DhtNetwork.log("found", v)
return True
def lookupDoneCb(ok):
DhtNetwork.log('[LOOKUP]:', PhtTest.key, "--", "success!" if ok else "Fail...")
with FeatureTest.lock:
FeatureTest.lock.notify()
def putRequest():
nonlocal hashes, values, nr_values
nr_values += 1
DhtNetwork.log("Random value put on the DHT.", "(now "+ str(nr_values)+" values on the dht)")
random.choice(wb.procs).sendNodePutRequest(random.choice(hashes).toString(), random.choice(values))
def _result(self, local_values, new_nodes):
bootstrap = self.bootstrap
if not DhtFeatureTest.successfullTransfer(local_values, DhtFeatureTest.foreignValues):
DhtNetwork.log('[GET]: Only %s on %s values persisted.' %
(len(DhtFeatureTest.foreignValues), len(local_values)))
else:
DhtNetwork.log('[GET]: All values successfully persisted.')
if DhtFeatureTest.foreignValues:
if new_nodes:
DhtNetwork.log('Values are newly found on:')
for node in new_nodes:
DhtNetwork.log(node)
if self._dump_storage:
DhtNetwork.log('Dumping all storage log from '\
'hosting nodes.')
for proc in self._workbench.procs:
proc.sendNodesRequest(DhtNetworkSubProcess.DUMP_STORAGE_REQ, DhtFeatureTest.foreignNodes)
else:
DhtNetwork.log("Values didn't reach new hosting nodes after shutdown.")
def getcb(value):
vstr = value.__str__()[:100]
DhtNetwork.log('[GET]: %s' % vstr + ("..." if len(vstr) > 100 else ""))
DhtFeatureTest.foreignValues.append(value)
return True
def _delete(self):
"""
Tests for performance of get() and put() operations on the network while
deleting around the target hash.
"""
bootstrap = self.bootstrap
bootstrap.resize(3)
consumer = bootstrap.get(1)
producer = bootstrap.get(2)
myhash = random_hash()
local_values = [Value(b'foo'), Value(b'bar'), Value(b'foobar')]
for _ in range(max(1, int(self._workbench.node_num/32))):
self._dhtGet(consumer, myhash)
DhtNetwork.log("Waiting 15 seconds...")
time.sleep(15)
self._dhtPut(producer, myhash, *local_values)
#checking if values were transfered
self._dhtGet(consumer, myhash)
DhtNetwork.log('Values are found on :')
for node in DhtFeatureTest.foreignNodes:
DhtNetwork.log(node)
if not DhtFeatureTest.successfullTransfer(local_values, DhtFeatureTest.foreignValues):
if DhtFeatureTest.foreignValues:
DhtNetwork.log('[GET]: Only ', len(DhtFeatureTest.foreignValues) ,' on ',
len(local_values), ' values successfully put.')
else:
DhtNetwork.log('[GET]: 0 values successfully put')
DhtNetwork.log('Removing all nodes hosting target values...')
for proc in self._workbench.procs:
DhtNetwork.log('[REMOVE]: sending shutdown request to', proc)
proc.sendNodesRequest(
DhtNetworkSubProcess.SHUTDOWN_NODE_REQ,
DhtFeatureTest.foreignNodes
)
def putDoneCb(ok, nodes):
if not ok:
DhtNetwork.log("[PUT]: failed!")
with FeatureTest.lock:
FeatureTest.done -= 1
FeatureTest.lock.notify()
def insertDoneCb(ok):
DhtNetwork.log('[INSERT]:', PhtTest.key, "--", "success!" if ok else "Fail...")
with FeatureTest.lock:
FeatureTest.lock.notify()
def _deleteTest(self):
"""
It uses Dht shutdown call from the API to gracefuly finish the nodes one
after the other.
"""
bootstrap = self.bootstrap
ops_count = []
bootstrap.resize(3)
consumer = bootstrap.get(1)
producer = bootstrap.get(2)
myhash = random_hash()
local_values = [Value(b'foo'), Value(b'bar'), Value(b'foobar')]
self._dhtPut(producer, myhash, *local_values)
#checking if values were transfered
self._dhtGet(consumer, myhash)
if not DhtFeatureTest.successfullTransfer(local_values, DhtFeatureTest.foreignValues):
if DhtFeatureTest.foreignValues:
DhtNetwork.log('[GET]: Only ', len(DhtFeatureTest.foreignValues) ,' on ',
len(local_values), ' values successfully put.')
else:
DhtNetwork.log('[GET]: 0 values successfully put')
if DhtFeatureTest.foreignValues and DhtFeatureTest.foreignNodes:
DhtNetwork.log('Values are found on :')
for node in DhtFeatureTest.foreignNodes:
DhtNetwork.log(node)
#DhtNetwork.log("Waiting a minute for the network to settle down.")
#time.sleep(60)
for _ in range(max(1, int(self._workbench.node_num/32))):
DhtNetwork.log('Removing all nodes hosting target values...')
cluster_ops_count = 0
for proc in self._workbench.procs:
DhtNetwork.log('[REMOVE]: sending shutdown request to', proc)
proc.sendNodesRequest(
DhtNetworkSubProcess.SHUTDOWN_NODE_REQ,
DhtFeatureTest.foreignNodes
)
DhtNetwork.log('sending message stats request')
stats = proc.sendGetMessageStats()
cluster_ops_count += sum(stats[1:])
DhtNetwork.log("3 seconds wait...")
time.sleep(3)
ops_count.append(cluster_ops_count/self._workbench.node_num)
# checking if values were transfered to new nodes
foreignNodes_before_delete = DhtFeatureTest.foreignNodes
DhtNetwork.log('[GET]: trying to fetch persistent values')
self._dhtGet(consumer, myhash)
new_nodes = set(DhtFeatureTest.foreignNodes) - set(foreignNodes_before_delete)
self._result(local_values, new_nodes)
if self._plot:
plt.plot(ops_count, color='blue')
plt.draw()
plt.ioff()
plt.show()
else:
DhtNetwork.log("[GET]: either couldn't fetch values or nodes hosting values...")
def _multTimeTest(self):
"""
Multiple put() calls are made from multiple nodes to multiple hashes
after what a set of 8 nodes is created around each hashes in order to
enable storage maintenance each nodes. Therefor, this tests will wait 10
minutes for the nodes to trigger storage maintenance.
"""
trigger_nodes = []
bootstrap = self.bootstrap
N_PRODUCERS = self._num_producers if self._num_values else 16
DP_TIMEOUT = 1
hashes = []
# Generating considerable amount of values of size 1KB.
VALUE_SIZE = 1024
NUM_VALUES = self._num_values if self._num_values else 50
values = [
Value(''.join(
random.choice(string.hexdigits)
for _ in range(VALUE_SIZE)).encode())
for _ in range(NUM_VALUES)
]
bootstrap.resize(N_PRODUCERS + 2)
consumer = bootstrap.get(N_PRODUCERS + 1)
producers = (bootstrap.get(n) for n in range(1, N_PRODUCERS + 1))
for p in producers:
hashes.append(random_hash())
self._dhtPut(p, hashes[-1], *values)
once = True
while self._keep_alive or once:
nodes = set([])
self._gottaGetThemAllPokeNodes(consumer, hashes, nodes=nodes)
DhtNetwork.log("Values are found on:")
for n in nodes:
DhtNetwork.log(n)
DhtNetwork.log("Creating 8 nodes around all of these hashes...")
for _hash in hashes:
self._trigger_dp(trigger_nodes, _hash, count=8)
DhtNetwork.log('Waiting', DP_TIMEOUT + 1,
'minutes for normal storage maintenance.')
time.sleep((DP_TIMEOUT + 1) * 60)
DhtNetwork.log('Deleting old nodes from previous search.')
for proc in self._workbench.procs:
DhtNetwork.log('[REMOVE]: sending delete request to', proc)
proc.sendNodesRequest(DhtNetworkSubProcess.REMOVE_NODE_REQ,
nodes)
# new consumer (fresh cache)
bootstrap.resize(N_PRODUCERS + 1)
bootstrap.resize(N_PRODUCERS + 2)
consumer = bootstrap.get(N_PRODUCERS + 1)
nodes_after_time = set([])
self._gottaGetThemAllPokeNodes(consumer,
hashes,
nodes=nodes_after_time)
self._result(values, nodes_after_time - nodes)
once = False
def _multTimeTest(self):
"""
Multiple put() calls are made from multiple nodes to multiple hashes
after what a set of 8 nodes is created around each hashes in order to
enable storage maintenance each nodes. Therefor, this tests will wait 10
minutes for the nodes to trigger storage maintenance.
"""
trigger_nodes = []
bootstrap = self.bootstrap
N_PRODUCERS = self._num_producers if self._num_values else 16
DP_TIMEOUT = 1
hashes = []
# Generating considerable amount of values of size 1KB.
VALUE_SIZE = 1024
NUM_VALUES = self._num_values if self._num_values else 50
values = [Value(''.join(random.choice(string.hexdigits) for _ in range(VALUE_SIZE)).encode()) for _ in range(NUM_VALUES)]
bootstrap.resize(N_PRODUCERS+2)
consumer = bootstrap.get(N_PRODUCERS+1)
producers = (bootstrap.get(n) for n in range(1,N_PRODUCERS+1))
for p in producers:
hashes.append(random_hash())
self._dhtPut(p, hashes[-1], *values)
once = True
while self._keep_alive or once:
nodes = set([])
self._gottaGetThemAllPokeNodes(consumer, hashes, nodes=nodes)
DhtNetwork.log("Values are found on:")
for n in nodes:
DhtNetwork.log(n)
DhtNetwork.log("Creating 8 nodes around all of these hashes...")
for _hash in hashes:
self._trigger_dp(trigger_nodes, _hash, count=8)
DhtNetwork.log('Waiting', DP_TIMEOUT+1, 'minutes for normal storage maintenance.')
time.sleep((DP_TIMEOUT+1)*60)
DhtNetwork.log('Deleting old nodes from previous search.')
for proc in self._workbench.procs:
DhtNetwork.log('[REMOVE]: sending delete request to', proc)
proc.sendNodesRequest(
DhtNetworkSubProcess.REMOVE_NODE_REQ,
nodes)
# new consumer (fresh cache)
bootstrap.resize(N_PRODUCERS+1)
bootstrap.resize(N_PRODUCERS+2)
consumer = bootstrap.get(N_PRODUCERS+1)
nodes_after_time = set([])
self._gottaGetThemAllPokeNodes(consumer, hashes, nodes=nodes_after_time)
self._result(values, nodes_after_time - nodes)
once = False
def lookupDoneCb(ok):
DhtNetwork.log('[LOOKUP]:', PhtTest.key, "--",
"success!" if ok else "Fail...")
with FeatureTest.lock:
FeatureTest.lock.notify()
def _getsTimesTest(self):
"""
Tests for performance of the DHT doing multiple get() operation.
"""
bootstrap = self.bootstrap
plt.ion()
fig, axes = plt.subplots(2, 1)
fig.tight_layout()
lax = axes[0]
hax = axes[1]
lines = None#ax.plot([])
#plt.ylabel('time (s)')
hax.set_ylim(0, 2)
# let the network stabilise
plt.pause(60)
#start = time.time()
times = []
lock = threading.Condition()
done = 0
def getcb(v):
nonlocal bootstrap
DhtNetwork.log("found", v)
return True
def donecb(ok, nodes):
nonlocal bootstrap, lock, done, times
t = time.time()-start
with lock:
if not ok:
DhtNetwork.log("failed !")
times.append(t)
done -= 1
lock.notify()
def update_plot():
nonlocal lines
while lines:
l = lines.pop()
l.remove()
del l
lines = plt.plot(times, color='blue')
plt.draw()
def run_get():
nonlocal done
done += 1
start = time.time()
bootstrap.front().get(InfoHash.getRandom(), getcb, lambda ok, nodes: donecb(ok, nodes, start))
plt.pause(5)
plt.show()
update_plot()
times = []
for n in range(10):
self._workbench.replace_cluster()
plt.pause(2)
DhtNetwork.log("Getting 50 random hashes succesively.")
for i in range(50):
with lock:
done += 1
start = time.time()
bootstrap.front().get(InfoHash.getRandom(), getcb, donecb)
while done > 0:
lock.wait()
update_plot()
update_plot()
print("Took", np.sum(times), "mean", np.mean(times), "std", np.std(times), "min", np.min(times), "max", np.max(times))
print('GET calls timings benchmark test : DONE. ' \
'Close Matplotlib window for terminating the program.')
plt.ioff()
plt.show()
def putDoneCb(ok, nodes):
if not ok:
DhtNetwork.log("[PUT]: failed!")
with FeatureTest.lock:
FeatureTest.done -= 1
FeatureTest.lock.notify()
def getcb(value):
DhtNetwork.log('[GET]: %s' % value)
DhtFeatureTest.foreignValues.append(value)
return True
def _deleteTest(self):
"""
It uses Dht shutdown call from the API to gracefuly finish the nodes one
after the other.
"""
bootstrap = self.bootstrap
ops_count = []
bootstrap.resize(3)
consumer = bootstrap.get(1)
producer = bootstrap.get(2)
myhash = random_hash()
local_values = [Value(b'foo'), Value(b'bar'), Value(b'foobar')]
self._dhtPut(producer, myhash, *local_values)
#checking if values were transfered
self._dhtGet(consumer, myhash)
if not DhtFeatureTest.successfullTransfer(local_values, DhtFeatureTest.foreignValues):
if DhtFeatureTest.foreignValues:
DhtNetwork.log('[GET]: Only ', len(DhtFeatureTest.foreignValues) ,' on ',
len(local_values), ' values successfully put.')
else:
DhtNetwork.log('[GET]: 0 values successfully put')
if DhtFeatureTest.foreignValues and DhtFeatureTest.foreignNodes:
DhtNetwork.log('Values are found on :')
for node in DhtFeatureTest.foreignNodes:
DhtNetwork.log(node)
#DhtNetwork.log("Waiting a minute for the network to settle down.")
#time.sleep(60)
for _ in range(max(1, int(self._workbench.node_num/32))):
DhtNetwork.log('Removing all nodes hosting target values...')
cluster_ops_count = 0
for proc in self._workbench.procs:
DhtNetwork.log('[REMOVE]: sending shutdown request to', proc)
proc.sendNodesRequest(
DhtNetworkSubProcess.SHUTDOWN_NODE_REQ,
DhtFeatureTest.foreignNodes
)
DhtNetwork.log('sending message stats request')
stats = proc.sendGetMessageStats()
cluster_ops_count += sum(stats[1:])
DhtNetwork.log("5 seconds wait...")
time.sleep(5)
ops_count.append(cluster_ops_count/self._workbench.node_num)
# checking if values were transfered to new nodes
foreignNodes_before_delete = DhtFeatureTest.foreignNodes
DhtNetwork.log('[GET]: trying to fetch persistent values')
self._dhtGet(consumer, myhash)
new_nodes = set(DhtFeatureTest.foreignNodes) - set(foreignNodes_before_delete)
self._result(local_values, new_nodes)
if self._op_plot:
display_plot(ops_count, color='blue')
else:
DhtNetwork.log("[GET]: either couldn't fetch values or nodes hosting values...")
def _result(self, local_values, new_nodes):
bootstrap = self.bootstrap
if not DhtFeatureTest.successfullTransfer(local_values, DhtFeatureTest.foreignValues):
DhtNetwork.log('[GET]: Only %s on %s values persisted.' %
(len(DhtFeatureTest.foreignValues), len(local_values)))
else:
DhtNetwork.log('[GET]: All values successfully persisted.')
if DhtFeatureTest.foreignValues:
if new_nodes:
DhtNetwork.log('Values are newly found on:')
for node in new_nodes:
DhtNetwork.log(node)
if self._dump_storage:
DhtNetwork.log('Dumping all storage log from '\
'hosting nodes.')
for proc in self._workbench.procs:
proc.sendDumpStorage(DhtFeatureTest.foreignNodes)
else:
DhtNetwork.log("Values didn't reach new hosting nodes after shutdown.")
