#!/usr/bin/env python
import msgpack
from cocaine.server.worker import Worker
from cocaine.logging import Logger
__author__ = 'Evgeny Safronov <*****@*****.**>'
log = Logger()
def echo(request, response):
message = yield request.read()
log.debug('Message received: \'{0}\'. Sending it back ...'.format(message))
response.write(msgpack.dumps(message))
response.close()
W = Worker()
W.run({
'doIt': echo,
})
#!/usr/bin/env python
from cocaine.server.worker import Worker
from cocaine.services import Service
storage = Service("storage")
def write_dummy(request, response):
req = yield request.read()
yield storage.write("dummy-namespace", "dummy-key",
req, ["dummy-tag"])
dummy = yield storage.read("dummy-namespace", "dummy-key")
response.write(dummy)
response.close()
W = Worker()
W.run({"write_dummy" : write_dummy})
After waiting for http request, we read it and get some message from query string (?message=...). Then QR code
generation comes into.
Generated image is sending back via `response` stream.
"""
@http
def generate(request, response):
request = yield request.read()
try:
message = request.request['message']
out = StringIO.StringIO()
img = qrcode.make(message)
img.save(out, 'png')
response.write_head(200, [('Content-type', 'image/png')])
response.write(out.getvalue())
except KeyError:
response.write_head(400, [('Content-type', 'text/plain')])
response.write('Query field "message" is required')
except Exception as err:
response.write_head(400, [('Content-type', 'text/plain')])
response.write(str(err))
finally:
response.close()
w = Worker()
w.run({
'generate': generate
})
#!/usr/bin/env python
import msgpack
from cocaine.server.worker import Worker
__author__ = 'EvgenySafronov <*****@*****.**>'
def chunker(request, response):
chunks = yield request.read()
try:
chunks = int(msgpack.loads(chunks))
except ValueError:
chunks = int(chunks)
for num in xrange(chunks):
response.write(msgpack.dumps('{0:-<1024}'.format(num)))
response.write(msgpack.dumps('Done'))
response.close()
W = Worker()
W.run({'spam': chunker})
#!/usr/bin/env python
# For YaSubbotnik at 15.06.2013
from cocaine.server.worker import Worker
W = Worker() # Dispatcher object
def event_handler(request, response):
req = yield request.read() # Read incoming data
if "Hello!" in req:
response.write("Hello, world!") # Send data chunk
else:
response.write("Please, say 'Hello' to me!")
response.close()
W.run({"hello" : event_handler}) # Run event loop - ready to work!
from cocaine.server.worker import Worker
from cocaine.logging.defaults import log
__author__ = 'EvgenySafronov <*****@*****.**>'
def echoV0(request, response):
message = yield request.read()
log.debug('Message received: \'{0}\'. Sending it back ...'.format(message))
response.write(message)
response.close()
def echoV1(request, response):
response.write('Hi!')
message = yield request.read()
log.debug('Message received: \'{0}\'. Sending it back ...'.format(message))
response.write(message)
response.write('Another message.')
message = yield request.read()
log.debug('Message received: \'{0}\'. Sending it back ...'.format(message))
response.write(message)
response.close()
worker = Worker()
worker.run({
'pingV0': echoV0,
'pingV1': echoV1,
})
#!/usr/bin/env python
import logging
import os
from cocaine.decorators.wsgi import django
from cocaine.logging import LoggerHandler
from cocaine.server.worker import Worker
__author__ = 'Evgeny Safronov <*****@*****.**>'
PROJECT_NAME = 'enterprise'
log = logging.getLogger(__name__)
cocaineHandler = LoggerHandler()
log.addHandler(cocaineHandler)
PROJECT_ROOT = os.path.abspath(os.path.dirname(__file__))
worker = Worker()
worker.run({
'work': django(**{
'root': os.path.join(PROJECT_ROOT, PROJECT_NAME),
'settings': '{0}.settings'.format(PROJECT_NAME),
'async': True,
'log': log
})
})
