import json
import mock
import unittest

import ceph_broker


class CephBrokerTestCase(unittest.TestCase):

    def setUp(self):
        super(CephBrokerTestCase, self).setUp()

    @mock.patch('ceph_broker.log')
    def test_process_requests_noop(self, mock_log):
        req = json.dumps({'api-version': 1, 'ops': []})
        rc = ceph_broker.process_requests(req)
        self.assertEqual(json.loads(rc), {'exit-code': 0})

    @mock.patch('ceph_broker.log')
    def test_process_requests_missing_api_version(self, mock_log):
        req = json.dumps({'ops': []})
        rc = ceph_broker.process_requests(req)
        self.assertEqual(json.loads(rc), {'exit-code': 1,
                                          'stderr':
                                          ('Missing or invalid api version '
                                           '(None)')})

    @mock.patch('ceph_broker.log')
    def test_process_requests_invalid_api_version(self, mock_log):
        req = json.dumps({'api-version': 2, 'ops': []})
        rc = ceph_broker.process_requests(req)
        self.assertEqual(json.loads(rc),
                         {'exit-code': 1,
                          'stderr': 'Missing or invalid api version (2)'})

    @mock.patch('ceph_broker.log')
    def test_process_requests_invalid(self, mock_log):
        reqs = json.dumps({'api-version': 1, 'ops': [{'op': 'invalid_op'}]})
        rc = ceph_broker.process_requests(reqs)
        self.assertEqual(json.loads(rc),
                         {'exit-code': 1,
                          'stderr': "Unknown operation 'invalid_op'"})

    @mock.patch('ceph_broker.create_pool')
    @mock.patch('ceph_broker.pool_exists')
    @mock.patch('ceph_broker.log')
    def test_process_requests_create_pool(self, mock_log, mock_pool_exists,
                                          mock_create_pool):
        mock_pool_exists.return_value = False
        reqs = json.dumps({'api-version': 1,
                           'ops': [{'op': 'create-pool', 'name':
                                    'foo', 'replicas': 3}]})
        rc = ceph_broker.process_requests(reqs)
        mock_pool_exists.assert_called_with(service='admin', name='foo')
        mock_create_pool.assert_called_with(service='admin', name='foo',
                                            replicas=3, pg_num=None)
        self.assertEqual(json.loads(rc), {'exit-code': 0})

    @mock.patch('ceph_broker.get_osds')
    @mock.patch('ceph_broker.create_pool')
    @mock.patch('ceph_broker.pool_exists')
    @mock.patch('ceph_broker.log')
    def test_process_requests_create_pool_w_pg_num(self, mock_log,
                                                   mock_pool_exists,
                                                   mock_create_pool,
                                                   mock_get_osds):
        mock_get_osds.return_value = [0, 1, 2]
        mock_pool_exists.return_value = False
        reqs = json.dumps({'api-version': 1,
                           'ops': [{'op': 'create-pool', 'name':
                                    'foo', 'replicas': 3,
                                    'pg_num': 100}]})
        rc = ceph_broker.process_requests(reqs)
        mock_pool_exists.assert_called_with(service='admin', name='foo')
        mock_create_pool.assert_called_with(service='admin', name='foo',
                                            replicas=3, pg_num='100')
        self.assertEqual(json.loads(rc), {'exit-code': 0})

    @mock.patch('ceph_broker.get_osds')
    @mock.patch('ceph_broker.create_pool')
    @mock.patch('ceph_broker.pool_exists')
    @mock.patch('ceph_broker.log')
    def test_process_requests_create_pool_w_pg_num_capped(self, mock_log,
                                                          mock_pool_exists,
                                                          mock_create_pool,
                                                          mock_get_osds):
        mock_get_osds.return_value = [0, 1, 2]
        mock_pool_exists.return_value = False
        reqs = json.dumps({'api-version': 1,
                           'ops': [{'op': 'create-pool', 'name':
                                    'foo', 'replicas': 3,
                                    'pg_num': 300}]})
        rc = ceph_broker.process_requests(reqs)
        mock_pool_exists.assert_called_with(service='admin', name='foo')
        mock_create_pool.assert_called_with(service='admin', name='foo',
                                            replicas=3, pg_num='100')
        self.assertEqual(json.loads(rc), {'exit-code': 0})

    @mock.patch('ceph_broker.create_pool')
    @mock.patch('ceph_broker.pool_exists')
    @mock.patch('ceph_broker.log')
    def test_process_requests_create_pool_exists(self, mock_log,
                                                 mock_pool_exists,
                                                 mock_create_pool):
        mock_pool_exists.return_value = True
        reqs = json.dumps({'api-version': 1,
                           'ops': [{'op': 'create-pool', 'name': 'foo',
                                    'replicas': 3}]})
        rc = ceph_broker.process_requests(reqs)
        mock_pool_exists.assert_called_with(service='admin', name='foo')
        self.assertFalse(mock_create_pool.called)
        self.assertEqual(json.loads(rc), {'exit-code': 0})

    @mock.patch('ceph_broker.create_pool')
    @mock.patch('ceph_broker.pool_exists')
    @mock.patch('ceph_broker.log')
    def test_process_requests_create_pool_rid(self, mock_log, mock_pool_exists,
                                              mock_create_pool):
        mock_pool_exists.return_value = False
        reqs = json.dumps({'api-version': 1,
                           'request-id': '1ef5aede',
                           'ops': [{'op': 'create-pool', 'name':
                                    'foo', 'replicas': 3}]})
        rc = ceph_broker.process_requests(reqs)
        mock_pool_exists.assert_called_with(service='admin', name='foo')
        mock_create_pool.assert_called_with(service='admin', name='foo',
                                            replicas=3, pg_num=None)
        self.assertEqual(json.loads(rc)['exit-code'], 0)
        self.assertEqual(json.loads(rc)['request-id'], '1ef5aede')

    @mock.patch('ceph_broker.log')
    def test_process_requests_invalid_api_rid(self, mock_log):
        reqs = json.dumps({'api-version': 0, 'request-id': '1ef5aede',
                           'ops': [{'op': 'create-pool'}]})
        rc = ceph_broker.process_requests(reqs)
        self.assertEqual(json.loads(rc)['exit-code'], 1)
        self.assertEqual(json.loads(rc)['stderr'],
                         "Missing or invalid api version (0)")
        self.assertEqual(json.loads(rc)['request-id'], '1ef5aede')