从Twisted上传到GCS

Question

I need to put files into Google's cloud storage from a twisted application.

I had been using Amazon and txAWS but now I'm using GCS I'm not sure if anything exists which will let me do this?

Is it possible to use txAWS with GCS? It sounds like an odd question but it's possible to use boto 's S3Connection with GCS so maybe there's a way to do the same with txAWS ?

Answer 1

I would suggest using the Twisted Web client with the GCS JSON API . Here's an example of listing the contents of a bucket:

import json
from twisted.internet import reactor
from twisted.internet.defer import Deferred
from twisted.internet.protocol import Protocol
from twisted.web.client import Agent
from twisted.web.error import Error
from twisted.web.http_headers import Headers

GCS_BASE_URL = 'https://www.googleapis.com/storage/v1beta1'
GCS_API_KEY = '<your-api-key>'
GCS_BUCKET = '<your-bucket>'

class ResponseAccumulate(Protocol):
    def __init__(self, finished):
        self.finished = finished
        self.fullbuffer = ''

    def dataReceived(self, bytes):
        print 'Received %d bytes.' % len(bytes)
        self.fullbuffer += bytes

    def connectionLost(self, reason):
        if isinstance(reason, Error):
            print 'Finished receiving body:', reason.getErrorMessage()
        else:
            parsed = json.loads(self.fullbuffer)
            print 'Bucket contents:'
            for item in parsed['items']:
              print ' ', item['id']
        self.finished.callback(None)

agent = Agent(reactor)

d = agent.request(
    'GET',
    '%s/b/%s/o?key=%s' % (GCS_BASE_URL, GCS_BUCKET, GCS_API_KEY),
    Headers({'User-Agent': ['Twisted Web Client Example']}),
    None)

def cbResponse(response):
    print 'Response received', response.code
    finished = Deferred()
    response.deliverBody(ResponseAccumulate(finished))
    return finished
d.addCallback(cbResponse)

def cbShutdown(ignored):
    reactor.stop()
d.addBoth(cbShutdown)

reactor.run()