88a2ee92dc
This allows sending multiple requests without waiting for response in next patches. Change-Id: I1a54313fbf6b18e1887febc7648e5b9cd8cf06ff Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com> Reviewed-on: https://review.gerrithub.io/435475 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com>
103 lines
3.1 KiB
Python
103 lines
3.1 KiB
Python
import json
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import socket
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import time
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def print_dict(d):
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print(json.dumps(d, indent=2))
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class JSONRPCException(Exception):
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def __init__(self, message):
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self.message = message
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class JSONRPCClient(object):
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def __init__(self, addr, port=None, verbose=False, timeout=60.0):
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self.verbose = verbose
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self.timeout = timeout
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self.request_id = 0
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try:
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if addr.startswith('/'):
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self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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self.sock.connect(addr)
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elif ':' in addr:
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for res in socket.getaddrinfo(addr, port, socket.AF_INET6, socket.SOCK_STREAM, socket.SOL_TCP):
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af, socktype, proto, canonname, sa = res
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self.sock = socket.socket(af, socktype, proto)
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self.sock.connect(sa)
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else:
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self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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self.sock.connect((addr, port))
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except socket.error as ex:
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raise JSONRPCException("Error while connecting to %s\n"
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"Error details: %s" % (addr, ex))
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def __del__(self):
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self.sock.close()
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def call(self, method, params={}, verbose=False):
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self.request_id += 1
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req = {}
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req['jsonrpc'] = '2.0'
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req['method'] = method
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req['id'] = self.request_id
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if (params):
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req['params'] = params
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reqstr = json.dumps(req)
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verbose = verbose or self.verbose
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if verbose:
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print("request:")
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print(json.dumps(req, indent=2))
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self.sock.sendall(reqstr.encode("utf-8"))
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buf = ''
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closed = False
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response = {}
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start_time = time.clock()
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while not closed:
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try:
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timeout = self.timeout - (time.clock() - start_time)
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if timeout <= 0.0:
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break
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self.sock.settimeout(timeout)
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newdata = self.sock.recv(4096)
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if (newdata == b''):
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closed = True
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buf += newdata.decode("utf-8")
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response = json.loads(buf)
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except socket.timeout:
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break
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except ValueError:
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continue # incomplete response; keep buffering
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break
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if not response:
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if method == "kill_instance":
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return {}
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if closed:
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msg = "Connection closed with partial response:"
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else:
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msg = "Timeout while waiting for response:"
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msg = "\n".join([msg, buf])
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raise JSONRPCException(msg)
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if verbose:
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print("response:")
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print(json.dumps(response, indent=2))
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if 'error' in response:
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msg = "\n".join(["Got JSON-RPC error response",
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"request:",
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json.dumps(req, indent=2),
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"response:",
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json.dumps(response['error'], indent=2)])
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raise JSONRPCException(msg)
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return response['result']
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