#!/usr/bin/env python
#
# Public Domain 2014-2016 MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
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import Queue
import threading, time, wiredtiger, wttest
from wtthread import backup_thread, checkpoint_thread, op_thread
from wtscenario import make_scenarios

# test_backup02.py
#   Run background checkpoints and backsups repeatedly while doing inserts
#   in another thread
class test_backup02(wttest.WiredTigerTestCase):
    scenarios = make_scenarios([
        ('table', dict(uri='table:test',fmt='L',dsize=100,nops=200,nthreads=1,time=30)),
    ])

    def test_backup02(self):
        done = threading.Event()
        uris = list()
        uris.append(self.uri + str(1))
        uris.append(self.uri + str(2))
        uris.append(self.uri + str(3))
        for this_uri in uris:
            self.session.create(this_uri,
                "key_format=" + self.fmt + ",value_format=S")
        # TODO: Ideally we'd like a checkpoint thread, separate to the backup
        # thread. Need a way to stop checkpoints while doing backups.
#        ckpt = checkpoint_thread(self.conn, done)
#        ckpt.start()
        bkp = backup_thread(self.conn, 'backup.dir', done)
        bkp.start()

        queue = Queue.Queue()
        my_data = 'a' * self.dsize
        for i in xrange(self.nops):
            queue.put_nowait(('gi', i, my_data))

        opthreads = []
        for i in xrange(self.nthreads):
            t = op_thread(self.conn, uris, self.fmt, queue, done)
            opthreads.append(t)
            t.start()

        # Add 200 update entries into the queue every .1 seconds.
        more_time = self.time
        while more_time > 0:
            time.sleep(0.1)
            my_data = str(more_time) + 'a' * (self.dsize - len(str(more_time)))
            more_time = more_time - 0.1
            for i in xrange(self.nops):
                queue.put_nowait(('gu', i, my_data))

        queue.join()
        done.set()
#        # Wait for checkpoint thread to notice status change.
#        ckpt.join()
        for t in opthreads:
            t.join()
        bkp.join()

if __name__ == '__main__':
    wttest.run()
