pyflink读文件写入到elasticsearch

from pyflink.datastream import StreamExecutionEnvironment
from pyflink.datastream.functions import  MapFunction, RuntimeContext, KeyedProcessFunction
from abc import ABC, abstractmethod
# -*- coding: utf-8 -*-
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

import re
import redis

# 创建 StreamExecutionEnvironment 对象
env = StreamExecutionEnvironment.get_execution_environment()
env.set_parallelism(1)

# 读取文件，创建 DataStream 对象
data_stream = env.read_text_file('/root/pyflink/elink_test.txt')
# 对每行数据添加字符串 'aaaa'
class LogEvent:
    bus_seq = None
    line_number = None
    event_received_time = None
    app_name = None
    source_module_name = None
    source = None
    filename = None
    message = None
    serial_id = None
    thread_id = None
class MyMapFunction(MapFunction):
   def open(self, runtime_context: RuntimeContext):
     pool = redis.ConnectionPool(host='127.0.0.1',port=6379,max_connections=50)
     self.r = redis.Redis(connection_pool=pool)
   def close(self):
     self.r.close()

   def map(self,line):
    process_id='';
    bus_seq=''
    if not line.startswith("ES"):
        return 
    if '' in line:
       pat=re.compile(r"(\d+)")
       bus_seq=pat.findall(line)
       process_id=line.split()[1]
       self.r.set(process_id,bus_seq[0])
    process_id=line.split()[1]
    if not len(process_id)==6 :
        process_id=line.split()[2]
     
    bus_seq=self.r.get(process_id) 
    if not bus_seq:
        return 
    #self.r.delete(process_id)
    log_event = LogEvent()
    LogEvent.bus_seq=bus_seq.decode('UTF-8')
    LogEvent.message=line
    #return (log_event.bus_seq.decode('UTF-8'),log_event.message)
    return LogEvent
    
class EsSink(MapFunction):
   def open(self, runtime_context: RuntimeContext):
     self.es = Elasticsearch("http://127.0.0.1:9200")

   def close(self):
     pass

   def map(self,LogEvent):
     try:
        data = {
          "@timestamp": datetime.now().strftime( "%Y-%m-%dT%H:%M:%S.000+0800" ),
           "content" : LogEvent.message,
            "bus_seq" : LogEvent.bus_seq
          }
     except:
          return
     self.es.index( index="flink_test",  document=data )
      
new_stream = data_stream.map(MyMapFunction()).map(EsSink())

# 输出到控制台
#new_stream.print()

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