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import re
import os
import tempfile
import subprocess
import time
import shutil
from leap.common.files import mkdir_p
class CouchDBWrapper(object):
"""
Wrapper for external CouchDB instance.
"""
def start(self):
"""
Start a CouchDB instance for a test.
"""
self.tempdir = tempfile.mkdtemp(suffix='.couch.test')
path = os.path.join(os.path.dirname(__file__),
'couchdb.ini.template')
handle = open(path)
conf = handle.read() % {
'tempdir': self.tempdir,
}
handle.close()
confPath = os.path.join(self.tempdir, 'test.ini')
handle = open(confPath, 'w')
handle.write(conf)
handle.close()
# create the dirs from the template
mkdir_p(os.path.join(self.tempdir, 'lib'))
mkdir_p(os.path.join(self.tempdir, 'log'))
args = ['couchdb', '-n', '-a', confPath]
null = open('/dev/null', 'w')
self.process = subprocess.Popen(
args, env=None, stdout=null.fileno(), stderr=null.fileno(),
close_fds=True)
# find port
logPath = os.path.join(self.tempdir, 'log', 'couch.log')
while not os.path.exists(logPath):
if self.process.poll() is not None:
got_stdout, got_stderr = "", ""
if self.process.stdout is not None:
got_stdout = self.process.stdout.read()
if self.process.stderr is not None:
got_stderr = self.process.stderr.read()
raise Exception("""
couchdb exited with code %d.
stdout:
%s
stderr:
%s""" % (
self.process.returncode, got_stdout, got_stderr))
time.sleep(0.01)
while os.stat(logPath).st_size == 0:
time.sleep(0.01)
PORT_RE = re.compile(
'Apache CouchDB has started on http://127.0.0.1:(?P<port>\d+)')
handle = open(logPath)
m = None
line = handle.readline()
while m is None:
m = PORT_RE.search(line)
line = handle.readline()
handle.close()
self.port = int(m.group('port'))
def stop(self):
"""
Terminate the CouchDB instance.
"""
self.process.terminate()
self.process.communicate()
shutil.rmtree(self.tempdir)
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