#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright (C) 2019 tribe29 GmbH - License: GNU General Public License v2
# This file is part of Checkmk (https://checkmk.com). It is subject to the terms and
# conditions defined in the file COPYING, which is part of this source code package.

# NOTE: Careful when replacing the *-import below with a more specific import. This can cause
# problems because it might remove variables from the check-context which are necessary for
# resolving legacy discovery results such as [("SUMMARY", "diskstat_default_levels")]. Furthermore,
# it might also remove variables needed for accessing discovery rulesets.
from cmk.base.check_legacy_includes.aws import *  # pylint: disable=wildcard-import,unused-wildcard-import
from cmk.base.plugins.agent_based.utils.aws import extract_aws_metrics_by_labels, parse_aws


def parse_aws_elbv2_target_groups_lambda(info):
    metrics = extract_aws_metrics_by_labels(["RequestCount", "LambdaUserError"], parse_aws(info))
    return metrics


@aws_get_parsed_item_data
def check_aws_application_elb_target_groups_lambda(item, params, data):

    request_rate = data.get("RequestCount")
    if request_rate is None:
        raise MKCounterWrapped("Currently no data from AWS")

    yield check_aws_request_rate(request_rate)

    lambda_error_rate = data.get("LambdaUserError")
    if lambda_error_rate is None:
        lambda_error_rate = 0  # CloudWatch only reports LambdaUserError if the value is nonzero

    for result in check_aws_error_rate(
        lambda_error_rate,
        request_rate,
        "aws_lambda_users_errors_rate",
        "aws_lambda_users_errors_perc",
        params.get("levels_lambda", {}),
        "Lambda user errors",
    ):
        yield result


check_info["aws_elbv2_application_target_groups_lambda"] = {
    "parse_function": parse_aws_elbv2_target_groups_lambda,
    "inventory_function": discover(lambda k, v: "RequestCount" in v),
    "check_function": check_aws_application_elb_target_groups_lambda,
    "service_description": "AWS/ApplicationELB Lambda %s",
    "group": "aws_elbv2_target_errors",
    "has_perfdata": True,
}
