# Copyright 2010 New Relic, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import pytest

from elasticsearch import Elasticsearch

from testing_support.fixtures import (validate_transaction_metrics,
    override_application_settings)
from testing_support.db_settings import elasticsearch_settings
from testing_support.util import instance_hostname

from newrelic.api.background_task import background_task

ES_MULTIPLE_SETTINGS = elasticsearch_settings()

# Settings

_enable_instance_settings = {
    'datastore_tracer.instance_reporting.enabled': True,
}
_disable_instance_settings = {
    'datastore_tracer.instance_reporting.enabled': False,
}

# Metrics

_base_scoped_metrics = (
    ('Datastore/statement/Elasticsearch/contacts/index', 2),
)

_base_rollup_metrics = (
    ('Datastore/all', 2),
    ('Datastore/allOther', 2),
    ('Datastore/Elasticsearch/all', 2),
    ('Datastore/Elasticsearch/allOther', 2),
    ('Datastore/operation/Elasticsearch/index', 2),
    ('Datastore/statement/Elasticsearch/contacts/index', 2),
)

_disable_scoped_metrics = list(_base_scoped_metrics)
_disable_rollup_metrics = list(_base_rollup_metrics)

_enable_scoped_metrics = list(_base_scoped_metrics)
_enable_rollup_metrics = list(_base_rollup_metrics)

if len(ES_MULTIPLE_SETTINGS) > 1:
    es_1 = ES_MULTIPLE_SETTINGS[0]
    es_2 = ES_MULTIPLE_SETTINGS[1]

    host_1 = instance_hostname(es_1['host'])
    port_1 = es_1['port']

    host_2 = instance_hostname(es_2['host'])
    port_2 = es_2['port']

    instance_metric_name_1 = 'Datastore/instance/Elasticsearch/%s/%s' % (
            host_1, port_1)
    instance_metric_name_2 = 'Datastore/instance/Elasticsearch/%s/%s' % (
            host_2, port_2)

    _enable_rollup_metrics.extend([
            (instance_metric_name_1, 1),
            (instance_metric_name_2, 1),
    ])

    _disable_rollup_metrics.extend([
            (instance_metric_name_1, None),
            (instance_metric_name_2, None),
    ])

# Query

def _exercise_es(es):
    es.index(index='contacts', doc_type='person',
            body={'name': 'Joe Tester', 'age': 25, 'title': 'QA Engineer'}, id=1)

# Test

@pytest.mark.skipif(len(ES_MULTIPLE_SETTINGS) < 2,
        reason='Test environment not configured with multiple databases.')
@override_application_settings(_enable_instance_settings)
@validate_transaction_metrics(
        'test_multiple_dbs:test_multiple_dbs_enabled',
        scoped_metrics=_enable_scoped_metrics,
        rollup_metrics=_enable_rollup_metrics,
        background_task=True)
@background_task()
def test_multiple_dbs_enabled():
    for db in ES_MULTIPLE_SETTINGS:
        es_url = 'http://%s:%s' % (db['host'], db['port'])
        client = Elasticsearch(es_url)
        _exercise_es(client)

@pytest.mark.skipif(len(ES_MULTIPLE_SETTINGS) < 2,
        reason='Test environment not configured with multiple databases.')
@override_application_settings(_disable_instance_settings)
@validate_transaction_metrics(
        'test_multiple_dbs:test_multiple_dbs_disabled',
        scoped_metrics=_disable_scoped_metrics,
        rollup_metrics=_disable_rollup_metrics,
        background_task=True)
@background_task()
def test_multiple_dbs_disabled():
    for db in ES_MULTIPLE_SETTINGS:
        es_url = 'http://%s:%s' % (db['host'], db['port'])
        client = Elasticsearch(es_url)
        _exercise_es(client)
