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# -*- coding: utf-8 -*-
from pyflink.datastream import StreamExecutionEnvironment
from pyflink.datastream.functions import MapFunction, RuntimeContext, KeyedProcessFunction
from abc import ABC, abstractmethod
from pyflink.datastream import StreamExecutionEnvironment
from pyflink.datastream.functions import MapFunction, RuntimeContext, KeyedProcessFunction
from pyflink.datastream.state import MapStateDescriptor
from pyflink.datastream.connectors.kafka import FlinkKafkaConsumer
from pyflink.common.typeinfo import Types, TypeInformation
from pyflink.datastream.connectors.elasticsearch import Elasticsearch7SinkBuilder, ElasticsearchEmitter,
    FlushBackoffType
from pyflink.datastream.connectors import DeliveryGuarantee
from pyflink.common.serialization import SimpleStringSchema
import json
import re
from datetime import datetime
from elasticsearch import Elasticsearch
from pyflink.datastream.functions import RuntimeContext, FlatMapFunction
from pyflink.common.typeinfo import Types
from pyflink.datastream import StreamExecutionEnvironment
from pyflink.datastream.connectors.kafka import FlinkKafkaConsumer
from pyflink.common.serialization import SimpleStringSchema

# 创建 StreamExecutionEnvironment 对象
env = StreamExecutionEnvironment.get_execution_environment()
env.set_parallelism(1)
env.add_jars("file:///root/flink-sql-connector-kafka_2.11-1.14.4.jar")

TEST_KAFKA_SERVERS = "127.0.0.1:9092"
TEST_KAFKA_TOPIC = "topic_elink"
TEST_GROUP_ID = "pyflink_group"

def get_kafka_customer_properties(kafka_servers: str, group_id: str):
    properties = {
        "bootstrap.servers": kafka_servers,
        "fetch.max.bytes": "67108864",
        "key.deserializer": "org.apache.kafka.common.serialization.StringDeserializer",
        "value.deserializer": "org.apache.kafka.common.serialization.StringDeserializer",
        "enable.auto.commit": "false",  # 关闭kafka 自动提交，此处不能传bool 类型会报错
        "group.id": group_id,
    }
    return properties

properties = get_kafka_customer_properties(TEST_KAFKA_SERVERS, TEST_GROUP_ID)

class LogEvent:
    # id表示全局流水
    id = None
    # source ip
    source = None
    #进程名字
    fileTag= None
    #文件名字
    fileName = None
    #场景码
    serviceCode = None
    #系统名字
    appName= None
    #时间戳
    timestamp = None
    #偏移量
    offset = None

    def __init__(self, id,source, fileTag,fileName, serviceCode,appName,timestamp,offset,message,index_name):
        self.id=id
        self.source = source
        self.fileTag = fileTag
        self.fileName = fileName
        self.serviceCode = serviceCode
        self.appName = appName
        self.timestamp= timestamp
        self.offset = offset
        self.message = message
        self.index_name = index_name

    def to_dict(self):
        return {
            "id": str(self.id),
            "source": str(self.source),
            "fileTag": str(self.fileTag),
            "fileName":str(self.fileName),
            "serviceCode":str(self.serviceCode),
            "appName":str(self.appName),
            "timestamp":str(self.timestamp),
            "offset":str(self.offset),
            "message":self.message,
            "index_name": self.index_name
        }

class MyMapFunction(FlatMapFunction):
    def open(self, runtime_context: RuntimeContext):
        self.process_id_to_bus_seq = runtime_context.get_map_state(
            MapStateDescriptor('process_id_map_bus_seq', Types.STRING(), Types.STRING()))

    def close(self):
        pass

    def flat_map(self, raw_message):
        id = ''
        source=''
        fileTag=''
        fileName=''
        serviceCode=''
        appName=''
        timestamp=''
        process_id = ''
        offset=''
        message=''
        raw_message = raw_message.replace(" ", "")
        out=json.loads(raw_message)
        message = out['message']
        source = out['source']
        fileTag = out['file_tag']
        serviceCode=''
        appName=out['app_name']
        timestamp=out['@timestamp']
        offset=out['log']['offset']
        fileName=out['log']['file']['path']

        pattern = r".*?接收数据.*?d{26}"
        matchObj = re.match(pattern, message)
        if matchObj:
            try:
                pat = re.compile(r".*?接收数据.*?(d{26}).*?")
                bus_seq = pat.search(message).group(1)
                process_id = message.split()[1]
                self.process_id_to_bus_seq.put(process_id, bus_seq)
            except:
                return
        process_id = message.split()[1]
        bus_seq = self.process_id_to_bus_seq.get(process_id)
        if not bus_seq:
            bus_seq = '0'
        id=bus_seq
        # self.r.delete(process_id)
        # log_event = LogEvent(bus_seq.decode('UTF-8'),message)
        # LogEvent['bus_seq']=bus_seq.decode('UTF-8')
        date_str = datetime.now().strftime("%Y-%m-%d")
        index_name = 'flink-log-elink-' + date_str
        try:
            log_event = LogEvent(id,source, fileTag,fileName, serviceCode,appName,timestamp,offset,message,index_name)
        except:
            return
        #print(log_event.to_dict())
        yield log_event.to_dict()

data_stream = env.add_source(
    FlinkKafkaConsumer(topics=TEST_KAFKA_TOPIC,
                       properties=properties,
                       deserialization_schema=SimpleStringSchema())
        .set_commit_offsets_on_checkpoints(True)
        .set_start_from_latest()
).name(f"消费{TEST_KAFKA_TOPIC}主题数据")

env.add_jars("file:///root/lib/flink-sql-connector-elasticsearch7-3.0.1-1.16.jar")

es7_sink = Elasticsearch7SinkBuilder()
    .set_bulk_flush_max_actions(1)
    .set_emitter(ElasticsearchEmitter.dynamic_index('index_name'))
    .set_hosts(['127.0.0.1:9200'])
    .build()

def get_line_key(line):
    message = ''
    message = line.replace(" ", "")
    line = json.loads(message)['message']
    try:
        process_id = line.split()[1]
    except:
        process_id = '9999'
    return process_id

# data_stream.key_by(get_line_key).flat_map(MyMapFunction(),output_type=Types.MAP(Types.STRING(),Types.STRING())).sink_to(es7_sink)
data_stream.key_by(get_line_key).flat_map(MyMapFunction(),
                                          output_type=Types.MAP(Types.STRING(), Types.STRING())).sink_to(es7_sink)

# 执行任务
env.execute('Add "bus_seq" to each line')