def test_encode_decode():
total_messages = 10
encoder = recordio.Encoder(lambda s: json.dumps(s).encode("UTF-8"))
decoder = recordio.Decoder(lambda s: json.loads(s.decode("UTF-8")))
message = {"type": "ATTACH_CONTAINER_OUTPUT", "containerId": "123456789"}
encoded = b""
for i in range(total_messages):
encoded += encoder.encode(message)
all_records = []
offset = 0
chunk_size = 5
while offset < len(encoded):
records = decoder.decode(encoded[offset:offset + chunk_size])
print(records)
all_records.extend(records)
offset += chunk_size
print(encoded)
print(all_records)
assert len(all_records) == total_messages
for record in all_records:
assert record == message
def test_encode():
encoder = recordio.Encoder(lambda s: json.dumps(s).encode("UTF-8"))
message = {"type": "ATTACH_CONTAINER_OUTPUT", "containerId": "123456789"}
encoded = encoder.encode(message)
string = json.dumps(message)
assert encoded == (str(len(string)) + "\n" + string).encode("UTF-8")
def test_encode_decode():
total_messages = 10
try:
encoder = recordio.Encoder(lambda s: bytes(json.dumps(s), "UTF-8"))
except Exception as exception:
raise DCOSException("Error instantiating 'RecordIO' encoder: {error}"
.format(error=exception))
try:
decoder = recordio.Decoder(lambda s: json.loads(s.decode("UTF-8")))
except Exception as exception:
raise DCOSException("Error instantiating 'RecordIO' decoder: {error}"
.format(error=exception))
try:
message = {
"type": "ATTACH_CONTAINER_OUTPUT",
"containerId": "123456789"
}
encoded = b""
for i in range(total_messages):
encoded += encoder.encode(message)
except Exception as exception:
raise DCOSException("Error encoding 'RecordIO' message: {error}"
.format(error=exception))
try:
all_records = []
offset = 0
chunk_size = 5
while offset < len(encoded):
records = decoder.decode(encoded[offset:offset + chunk_size])
all_records.extend(records)
offset += chunk_size
assert len(all_records) == total_messages
for record in all_records:
assert record == message
except Exception as exception:
raise DCOSException("Error decoding 'RecordIO' messages: {error}"
.format(error=exception))
def test_encode():
try:
encoder = recordio.Encoder(lambda s: bytes(json.dumps(s), "UTF-8"))
except Exception as exception:
raise DCOSException("Error instantiating 'RecordIO' encoder: {error}"
.format(error=exception))
try:
message = {
"type": "ATTACH_CONTAINER_OUTPUT",
"containerId": "123456789"
}
encoded = encoder.encode(message)
except Exception as exception:
raise DCOSException("Error encoding 'RecordIO' message: {error}"
.format(error=exception))
string = json.dumps(message)
assert encoded == bytes(str(len(string)) + "\n" + string, "UTF-8")
def __init__(self,
task_id,
cmd=None,
args=None,
interactive=False,
tty=False):
# Store relevant parameters of the call for later.
self.cmd = cmd
self.interactive = interactive
self.tty = tty
self.args = args
# Create a client and grab a reference to the DC/OS master.
client = DCOSClient()
master = get_master(client)
# Get the task and make sure its container was launched by the UCR.
# Since task's containers are launched by the UCR by default, we want
# to allow most tasks to pass through unchecked. The only exception is
# when a task has an explicit container specified and it is not of type
# "MESOS". Having a type of "MESOS" implies that it was launched by the
# UCR -- all other types imply it was not.
task_obj = master.task(task_id)
if "container" in task_obj.dict():
if "type" in task_obj.dict()["container"]:
if task_obj.dict()["container"]["type"] != "MESOS":
raise DCOSException(
"This command is only supported for tasks"
" launched by the Universal Container Runtime (UCR).")
# Get the URL to the agent running the task.
if client._mesos_master_url:
self.agent_url = client.slave_url(
slave_id="",
private_url=task_obj.slave().http_url(),
path="api/v1")
else:
self.agent_url = client.slave_url(slave_id=task_obj.slave()['id'],
private_url="",
path="api/v1")
# Grab a reference to the container ID for the task.
self.parent_id = master.get_container_id(task_id)
# Generate a new UUID for the nested container
# used to run commands passed to `task exec`.
self.container_id = str(uuid.uuid4())
# Set up a recordio encoder and decoder
# for any incoming and outgoing messages.
self.encoder = recordio.Encoder(
lambda s: bytes(json.dumps(s, ensure_ascii=False), "UTF-8"))
self.decoder = recordio.Decoder(
lambda s: json.loads(s.decode("UTF-8")))
# Set up queues to send messages between threads used for
# reading/writing to STDIN/STDOUT/STDERR and threads
# sending/receiving data over the network.
self.input_queue = Queue()
self.output_queue = Queue()
# Set up an event to block attaching
# input until attaching output is complete.
self.attach_input_event = threading.Event()
self.attach_input_event.clear()
# Set up an event to block printing the output
# until an attach input event has successfully
# been established.
self.print_output_event = threading.Event()
self.print_output_event.clear()
# Set up an event to block the main thread
# from exiting until signaled to do so.
self.exit_event = threading.Event()
self.exit_event.clear()
# Use a class variable to store exceptions thrown on
# other threads and raise them on the main thread before
# exiting.
self.exception = None
def __init__(self,
task_id,
cmd=None,
args=None,
interactive=False,
tty=False):
# Store relevant parameters of the call for later.
self.cmd = cmd
self.interactive = interactive
self.tty = tty
self.args = args
# Create a client and grab a reference to the DC/OS master.
client = DCOSClient()
master = get_master(client)
# Get the URL to the agent running the task.
task_obj = master.task(task_id)
if client._mesos_master_url:
self.agent_url = client.slave_url(
slave_id="",
private_url=task_obj.slave().http_url(),
path="api/v1")
else:
self.agent_url = client.slave_url(slave_id=task_obj.slave()['id'],
private_url="",
path="api/v1")
# Grab a reference to the container ID for the task.
self.parent_id = master.get_container_id(task_id)
# Generate a new UUID for the nested container
# used to run commands passed to `task exec`.
self.container_id = str(uuid.uuid4())
# Set up a recordio encoder and decoder
# for any incoming and outgoing messages.
self.encoder = recordio.Encoder(
lambda s: bytes(json.dumps(s, ensure_ascii=False), "UTF-8"))
self.decoder = recordio.Decoder(
lambda s: json.loads(s.decode("UTF-8")))
# Set up queues to send messages between threads used for
# reading/writing to STDIN/STDOUT/STDERR and threads
# sending/receiving data over the network.
self.input_queue = Queue()
self.output_queue = Queue()
# Set up an event to block attaching
# input until attaching output is complete.
self.attach_input_event = threading.Event()
self.attach_input_event.clear()
# Set up an event to block printing the output
# until an attach input event has successfully
# been established.
self.print_output_event = threading.Event()
self.print_output_event.clear()
# Set up an event to block the main thread
# from exiting until signaled to do so.
self.exit_event = threading.Event()
self.exit_event.clear()
# Use a class variable to store exceptions thrown on
# other threads and raise them on the main thread before
# exiting.
self.exception = None
import socket
import socketserver
import subprocess
import time
import threading
from dcos import recordio
from functools import partial
from http.server import HTTPServer, BaseHTTPRequestHandler
PORT = 8888
containers = {}
tasksToContainer = {"1": "a", "2": "b"}
encoder = recordio.Encoder(
lambda s: bytes(json.dumps(s, ensure_ascii=False), "UTF-8"))
decoder = recordio.Decoder(lambda s: json.loads(s.decode("UTF-8")))
ROUTES = [('/mesos/master/api/v1')]
class StreamingTCPServer(socketserver.ThreadingMixIn, socketserver.TCPServer):
def server_bind(self):
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.socket.bind(self.server_address)
class StreamingRequestHandler(BaseHTTPRequestHandler, object):
def __init__(self, request, client_address, server):
super(StreamingRequestHandler, self).__init__(request, client_address,
server)
