import os
import sys

__dir__ = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
#sys.path.append(__dir__)
sys.path.append(os.path.join(__dir__,"tools"))

import json
from concurrent.futures import ThreadPoolExecutor
import utils.compress as compress
from utils.my_hdfs_client import MyHDFSClient

# Hadoop 安装目录和配置信息
hadoop_home = "/app/env/hadoop-3.2.4"
configs = {
    "fs.defaultFS": "hdfs://192.168.141.208:9000",
    "hadoop.job.ugi": ""
}
hdfs_client = MyHDFSClient(hadoop_home, configs)

def process_file(file_path):
    """处理单个文件"""
    ret, out = hdfs_client._run_cmd(f"text {file_path}")
    result=[]
    for line in out:
        sample_values = line.rstrip('\n').split('\t')
        if(len(sample_values) == 2):
            vid, vec = sample_values
            result.append({
                "vid":vid,
                "vec":vec
            })
        else :
            print(f"{sample_values}")
    return result

def write_results(results, output_file):
    """将结果写入文件"""
    with open(output_file, 'w') as json_file:
        for s in results:
            json_file.write(s + "\n")

def thread_task(name, file_list):
    """线程任务"""
    print(f"Thread {name}: starting file_list:{file_list}")
    i=0
    for file_path in file_list:
        i=i+1
        count=len(file_list)
        print(f"Thread {name}: starting file:{file_path} {i}/{count}")
        result=process_file(file_path)
        file_name, file_suffix = os.path.splitext(os.path.basename(file_path))
        output_file = f"/app/milvus-{file_name}.json"
        write_results(json.dumps({"rows":result}, indent=4), output_file)
        compress.compress_file_tar(output_file, f"{output_file}.tar.gz")

        hdfs_client.delete(f"/dyp/milvus/{file_name}.gz")
        hdfs_client.upload(f"{output_file}.tar.gz", f"/dyp/milvus/{file_name}.gz", multi_processes=1, overwrite=True)
        print(f"Thread {name}: ending file:{file_path} {i}/{count}")
    print(f"Thread {name}: finishing")

def main():

    max_workers = 2
    split_file_list = [
        ['/dyp/vec/part-00017.gz'],
        ['/dyp/vec/part-00018.gz']
    ]
    future_list = []
    with ThreadPoolExecutor(max_workers=max_workers) as executor:
        for i, file_list in enumerate(split_file_list):
            future_list.append(executor.submit(thread_task, f"thread{i}", file_list))

    for future in future_list:
        future.result()

    print("Main program ending")

if __name__ == "__main__":
    main()