GCP -观测API挂

Question

我看到对GCP的第一个调用有时挂起--并不总是这样。下面是堆栈跟踪。

我基于python2.7，GCP 1.5.5

序列：

http = httplib2.Http()
credentials = GoogleCredentials.get_application_default()
    if http:
        gcp = GCP_discovery.build('compute', 'v1', credentials=credentials, httt
p=http)
    else:
        gcp = GCP_discovery.build('compute', 'v1', credentials=credentials)
    list = gcp.routes().list(project = project).execute(http=http)

对gcp的最后一次调用永远不会返回。用不同的API替换gcp.routes().list()也会导致挂起。如果我重新开始一切都很顺利。

File: "/opt/avi/python/bin/cloud_connector/baremetal/gcp_client.py", line 677, in _reconcile_all_vips
  rtlist = gcp.routes().list(project=xpn_project).execute(http=http)
File: "/usr/local/lib/python2.7/dist-packages/oauth2client/_helpers.py", line 133, in positional_wrapper
  return wrapped(*args, **kwargs)
File: "/usr/local/lib/python2.7/dist-packages/googleapiclient/http.py", line 833, in execute
  method=str(self.method), body=self.body, headers=self.headers)
File: "/usr/local/lib/python2.7/dist-packages/googleapiclient/http.py", line 160, in _retry_request
  resp, content = http.request(uri, method, *args, **kwargs)
File: "/usr/local/lib/python2.7/dist-packages/oauth2client/transport.py", line 175, in new_request
  redirections, connection_type)
File: "/usr/local/lib/python2.7/dist-packages/oauth2client/transport.py", line 282, in request
  connection_type=connection_type)
File: "/usr/local/lib/python2.7/dist-packages/httplib2/__init__.py", line 1609, in request
  (response, content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey)
File: "/usr/local/lib/python2.7/dist-packages/httplib2/__init__.py", line 1351, in _request
  (response, content) = self._conn_request(conn, request_uri, method, body, headers)
File: "/usr/local/lib/python2.7/dist-packages/httplib2/__init__.py", line 1334, in _conn_request
  content = response.read()
File: "/usr/lib/python2.7/httplib.py", line 578, in read
  return self._read_chunked(amt)
File: "/usr/lib/python2.7/httplib.py", line 620, in _read_chunked
  line = self.fp.readline(_MAXLINE + 1)
File: "/usr/lib/python2.7/socket.py", line 476, in readline
  data = self._sock.recv(self._rbufsize)
File: "/usr/lib/python2.7/ssl.py", line 341, in recv
  return self.read(buflen)
File: "/usr/lib/python2.7/ssl.py", line 260, in read
  return self._sslobj.read(len)

Answer 1

我在您发布的代码片段中看到了几个问题：

1. 您有一个错误http=http而不是htttp=http
2. 如果您想使用HTTP2 (使用httplib2.Http)，您应该使用授权http2实例使用GCP帐户凭据。这个部分在你的代码中丢失了。
3. 如果要将http=参数传递给disccovery.build()，则不应该再传递credentials=参数(与上文第2点相关)。这两个论点是相互排斥的。
4. 只有在使用http=时，才需要将HTTP2参数传递给HTTP2。

由于if条件，不太清楚您是否打算与HTTP2一起使用。而且，上面提到的问题似乎都与您所观察到的问题没有直接关系，所以不能完全确定它是否会解决您的问题。

仅供参考，我在我的GCP项目上尝试了下面的代码片段，它在routes上调用routes API 1000次，不使用HTTP2，然后再次使用HTTP2。我没有注意到在我的案件中有什么悬念：

#!/usr/bin/env python

from googleapiclient.discovery import build
from oauth2client.client import GoogleCredentials
import httplib2

# Fill in your project name here
PROJECT_NAME = ''

class GcpComputeApi:
    def __init__(self, use_http2=False):
        credentials = GoogleCredentials.get_application_default()
        self.use_http2 = use_http2
        if use_http2:
            self.http = credentials.authorize(httplib2.Http())
            self.gcp_compute = build('compute', 'v1', http=self.http)
        else:
            self.gcp_compute = build('compute', 'v1', credentials=credentials)

    def list_routes(self):
        if self.use_http2:
            return self.gcp_compute.routes().list(project = PROJECT_NAME).execute(http=self.http)
        else:
            return self.gcp_compute.routes().list(project = PROJECT_NAME).execute()

compute_api = GcpComputeApi()
for ix in range(1000):
    list = compute_api.list_routes()
    print "ix = " + str(ix) + " len = " + str(len(list))

compute_api_using_http2 = GcpComputeApi(use_http2=True)
for ix in range(1000):
    list = compute_api_using_http2.list_routes()
    print "ix = " + str(ix) + " len = " + str(len(list))