#!/usr/bin/env python
#
# Public Domain 2014-present MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
#
# This is free and unencumbered software released into the public domain.
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# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
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import glob, json
import helper, wiredtiger, wttest
from wiredtiger import stat

# test_stat_log02.py
#    Statistics log sources argument and JSON testing.
class test_stat_log02(wttest.WiredTigerTestCase):

    # Tests need to setup the connection in their own way.
    def setUpConnectionOpen(self, dir):
        return None
    def setUpSessionOpen(self, conn):
        return None

    def check_stats_file(self, dir):
        files = glob.glob(dir + '/' + 'WiredTigerStat.[0-9]*')
        self.assertTrue(files)
        self.check_file_is_json(files[0])

    def check_file_is_json(self, file_name):
        f = open(file_name, 'r')
        for line in f:
            # This will throw assertions if we don't have correctly formed JSON
            json.loads(line)

    def check_file_contains_tables(self, dir):
        files = glob.glob(dir + '/' + 'WiredTigerStat.[0-9]*')
        f = open(files[0], 'r')
        for line in f:
            data = json.loads(line)
            if "wiredTigerTables" in data:
                if "file:foo.wt" in data["wiredTigerTables"]:
                    return
        self.fail('Did not find expected sources in statistics log output')

    def test_stats_log_json(self):
        self.conn = self.wiredtiger_open(None,
            "create,statistics=(fast),statistics_log=(wait=1,json,on_close=1)")

        # Closing the connection forces statistics to be written.
        self.close_conn()

        self.check_stats_file(".")

    def test_stats_log_on_json_with_tables(self):
        self.conn = self.wiredtiger_open(None,
            "create,statistics=(fast)," +\
            "statistics_log=(wait=1,json,on_close=1,sources=[file:])")
        self.session = self.conn.open_session(None)

        # Create a session and table to give us some stats.
        self.session.create("table:foo", "key_format=S,value_format=S")
        c = self.session.open_cursor("table:foo")
        c["foo"] = "foo"

        # Closing the connection forces statistics to be written.
        self.close_conn()

        self.check_stats_file(".")
        self.check_file_contains_tables(".")

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