import os
from datetime import datetime
import boto3

# 環境変数
CLUSTER_NAME = os.environ["CLUSTER_NAME"]
TASK_NAME = os.environ["TASK_NAME"]
CONTAINER_NAME = os.environ["CONTAINER_NAME"]
SUBNET_ID_AP_NORTHEAST_1A = os.environ["SUBNET_ID_AP_NORTHEAST_1A"]
SUBNET_ID_AP_NORTHEAST_1D = os.environ["SUBNET_ID_AP_NORTHEAST_1D"]
SECURITY_GROUP_ID_ECSALL = os.environ["SECURITY_GROUP_ID_ECSALL"]
SECURITY_GROUP_ID_ECSDATAIMPORT = os.environ["SECURITY_GROUP_ID_ECSDATAIMPORT"]
MODE = os.environ["MODE"]

# クラス変数
ecs_client = boto3.client('ecs')


def lambda_handler(event, context):
    print(f'{datetime.now():%Y-%m-%d %H:%M:%S} Info I-1 駆動処理開始')

    # イベント情報を取得する
    s3_event = event["Records"][0]["s3"]
    event_bucket_name = s3_event["bucket"]["name"]
    event_object_key = s3_event["object"]["key"]
    event_file_name = os.path.basename(event_object_key)
    event_data_source_name = os.path.dirname(event_object_key).split('/')[0]
    print(f'{datetime.now():%Y-%m-%d %H:%M:%S} Info I-2 バケット名：{event_bucket_name}')
    print(f'{datetime.now():%Y-%m-%d %H:%M:%S} Info I-3 ファイル名：{event_file_name}')
    print(f'{datetime.now():%Y-%m-%d %H:%M:%S} Info I-4 データソース名：{event_data_source_name}')

    # ECSを起動する
    response = ecs_client.run_task(
        launchType='FARGATE',
        cluster=CLUSTER_NAME,
        taskDefinition=TASK_NAME,
        networkConfiguration={
            "awsvpcConfiguration": {
                "subnets": [
                    SUBNET_ID_AP_NORTHEAST_1A,
                    SUBNET_ID_AP_NORTHEAST_1D,
                ],
                "securityGroups": [
                    SECURITY_GROUP_ID_ECSALL,
                    SECURITY_GROUP_ID_ECSDATAIMPORT,
                ],
            }
        },
        overrides={
            "containerOverrides": [
                {
                    "name": CONTAINER_NAME,
                    "environment": [
                        {"name": 'BUCKET_NAME', "value": event_bucket_name},
                        {"name": 'TARGET_KEY', "value": event_object_key},
                        {"name": 'DATA_SOURCE_NAME', "value": event_data_source_name},
                        {"name": 'FILE_NAME', "value": event_file_name},
                        {"name": 'MODE', "value": MODE},
                    ],
                },
            ],
        },
    )
    print(f'{datetime.now():%Y-%m-%d %H:%M:%S} Info I-5 ECS起動レスポンス：{str(response)}')

    print(f'{datetime.now():%Y-%m-%d %H:%M:%S} Info I-6 駆動処理終了')