text: from ..base import Base
  import os
  import logging
  import hashlib
  import subprocess
  import time
  import grpc
  import sys
  
  logger = logging.getLogger()
  level = os.environ.get("NVIM_PYTHON_LOG_LEVEL", "WARNING")
  logger.setLevel(logging.getLevelName(level))
  logger.info("Loading fuzzy-denite")
  logger.debug("GOFUZZY sys.path is %s" % sys.path)
  pkgPath = os.path.dirname(__file__).split(os.path.sep)[:-3]
  pkgPath = os.path.sep.join(pkgPath)
  if pkgPath not in sys.path:
      logger.debug("added %s to sys.path" % pkgPath)
      sys.path.insert(0, pkgPath)
  binDir = os.path.dirname(__file__).split(os.path.sep)[:-5]
  binDir = binDir + ["bin", "fuzzy-denite"]
  exe = os.path.sep.join(binDir)
  import api_pb2_grpc
  import api_pb2
  
  
  class Filter(Base):
  
      def __init__(self, vim):
          super().__init__(vim)
  
          self.name = 'matcher/gofuzzy'
          self.description = 'go fuzzy matcher'
  
          self._initialized = False
          self._disabled = False
          self.proc = None
          self.debug("[%s] Loaded matcher/gofuzzy" % time.time())
          self.booted = False
          if sys.platform == 'linux':
              self.proto = "unix"
              self.port = "/tmp/fuzzy-denite-%s.sock" % os.getpid()
              self.endpoint = self.proto + ":" + self.port
          else:
              self.proto = "tcp"
              self.port = "51000"
              self.endpoint = "localhost:" + self.port
  
      def _startProcess(self):
          if not self._initialized:
              # reap any existing process
              self._reapProcess()
              # start the server here
              self.debug("[%s] starting fuzzy-denite GRPC server %s " %
                         (time.time(), exe))
              cmd = [exe, '--log', 'info', 'server', '-u', self.proto,
                     '-p', self.port, '--grpc']
              self.proc = subprocess.Popen(cmd)
              self.debug("Launching server: " + " ".join(cmd))
              self.debug("[%s] pid: %s" % (time.time(), self.proc.pid))
              self.conn = grpc.insecure_channel(self.endpoint)
              self.service = api_pb2_grpc.FuzzyStub(self.conn)
              self._initialized = True
  
              # force check on whether svc is callable
              self.booted = False
              time.sleep(0.05)
  
      def _reapProcess(self):
          if self.proc:
              exitcode = self.proc.poll()
              self.debug("Process exited with code %s" % exitcode)
  
      def _verifyService(self):
          maxTries, current = 3, 0
          lastEx = None
          while not self.booted and current < maxTries:
              current = current + 1
              self._startProcess()
              try:
                  reply = self.service.Version(api_pb2.Empty())
                  self.debug("startup attempt #%s server version is %s@%s" %
                             (current, reply.branch, reply.sha))
                  self.booted = True
              except grpc.RpcError as ex:
                  self.debug("Error calling version api; attempt #%s" %
                             current)
                  self._initialized = False
                  lastEx = ex
          if not self.booted:
              raise lastEx
  
      def filter(self, context):
  
          def getCandidate(s):
              for i in context['candidates']:
                  if i['word'] == s:
                      return i
  
          if not context['candidates'] or not context[
                  'input'] or self._disabled:
              return context['candidates']
  
          self._verifyService()
  
          # ispath = (os.path.exists(context['candidates'][0]['word']))
          status, reason, result = self._get_fuzzy_results(
              context['candidates'], context['input'])
          if result is not None:
              # logging.debug("2GREPME....")
              # logging.debug(len(result))
              # logging.debug(result)
              return [x for x in map(getCandidate, result)]
          else:
              # just return the current list as is.. if this is due to 
              # the server not running, then when the user types the next
              # chars, the server will be started
              self.error_message(context, "gofuzzy error: %s - %s" % (status, reason))
              return [x for x in context['candidates']]
  
      def _get_fuzzy_results(self, candidates, pattern):
          items = [d['word'] for d in candidates]
          items.sort()
          md5sum = hashlib.md5("".join(items).encode("utf8")).hexdigest()
  
          try:
              # just send cid & let server tell us if data is not available.
              reply = self.service.Match(
                                      api_pb2.FuzzyRequest(
                                          cid=md5sum,
                                          qry=pattern,
                                          max=20,
                                          algo="fuzzy",
                                          data=[]))
              if reply.code == 400:
                  reply = self.service.Match(
                                      api_pb2.FuzzyRequest(
                                          cid=md5sum,
                                          qry=pattern,
                                          max=20,
                                          algo="fuzzy",
                                          data=items))
  
              if reply.code != 200:
                  return reply.code, reply.msg, None
              else:
                  return reply.code, reply.msg, reply.match
          except grpc.RpcError as ex:
              self._initialized = False
              self.debug("Exception in gofuzzy - \n %s" % ex)
              return 200, "Ok", items
  