Hello!
I am desperately trying to get a Python3.5.2 native interface to the ETCD
V3 Api (since there is no new library currently in place or supported).
I nstalled the newest Protoc Compiler as well as the current GRPC tools
straight from the source, gathered up all the proto-files which are
imported in the etcd/etcdserver/etcdserverpb/rpc.proto from various sources
and let it generate a grpc python file for each of them. I put them all
into one folder, fixed up the imports to match and then fired up Ipython to
try some things in the console.
At the very least the KV store seemed to work great. Put and Range were
working fine and I was sure that everything else would work out as well.
But when I tried to set up a Watch, the Thread spawned in the background
immediately dies. Here is my console output:
In [1]: import etcd_grpc.rpc_pb2 as rpc
In [2]: import grpc
In [3]: chan= grpc.insecure_channel('localhost:2379')
In [4]: kv = rpc.KVStub(chan)
In [5]: put = kv.Put(rpc.PutRequest(key=b'lala', value=b'hoho'))
In [6]: put
Out[6]:
header {
cluster_id: 14841639068965178418
member_id: 10276657743932975437
revision: 15
raft_term: 3
}
In [7]: wcr = rpc.WatchCreateRequest(key=b'bam')
In [8]: wr = rpc.WatchRequest(create_request=wcr)
In [9]: wi = rpc.WatchStub(grpc.insecure_channel('localhost:2379'))
In [10]: watch = wi.Watch(wr)
In [11]: Exception in thread Thread-849:
Traceback (most recent call last):
File "/usr/lib/python3.5/threading.py", line 914, in _bootstrap_inner
self.run()
File "/usr/lib/python3.5/threading.py", line 862, in run
self._target(*self._args, **self._kwargs)
File "/usr/local/lib/python3.5/dist-packages/grpc/_channel.py", line 184,
in consume_request_iterator
for request in request_iterator:
TypeError: 'WatchRequest' object is not iterable
The thread supposed to feed the watch-Rendevouz died leaving the console in
an eternal loop (or maybe there is a long timeout) if I try to use
watch.next()
I tried debugging it, but the automatedly generated code is stacked so deep
and on top there is the threading complexity.... i have no idea what the
final function does and why it would try to treat the WatchRequest as an
iterator. I haven't modified the output of the grpc tools at all.
If someone has an Idea, could help me with this, or even has a working ETCD
V3 Interface for python laying around. I would be grateful for either.
Thank you,
Martin Znamirowski
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