初始合入databridge,用于后续数据的导出导入
This commit is contained in:
23
src/core/config.py
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23
src/core/config.py
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import os
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import logging
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class Config:
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def __init__(self):
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self.logger = logging.getLogger(self.__class__.__name__)
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self.data_root = os.getenv('DATA_PVC_MOUNT_PATH', '/data')
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def get_path(self, *args):
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"""构建绝对路径"""
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return os.path.join(self.data_root, *args)
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def get_database_config(self):
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"""获取数据库配置"""
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return {
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'host': os.getenv('DB_HOST'),
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'port': os.getenv('DB_PORT', '5432'),
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'dbname': os.getenv('DB_NAME'),
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'user': os.getenv('DB_USER'),
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'password': os.getenv('DB_PASSWORD')
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}
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51
src/core/database.py
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51
src/core/database.py
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@@ -0,0 +1,51 @@
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import psycopg2
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import logging
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from psycopg2 import sql
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from psycopg2.extras import execute_batch
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class Database:
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def __init__(self, host, port, dbname, user, password):
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self.conn = None
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self.logger = logging.getLogger(self.__class__.__name__)
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self.db_config = {
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'host': host,
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'port': port,
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'dbname': dbname,
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'user': user,
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'password': password
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}
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self.connect()
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def connect(self):
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try:
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self.conn = psycopg2.connect(**self.db_config)
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self.logger.info(f"Connected to database: {self.db_config['dbname']}@{self.db_config['host']}")
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except Exception as e:
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self.logger.error(f"Database connection failed: {str(e)}")
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raise
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def disconnect(self):
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if self.conn:
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self.conn.close()
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self.logger.info("Database connection closed")
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def execute_batch(self, query, data_list):
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try:
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with self.conn.cursor() as cursor:
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execute_batch(cursor, query, data_list)
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self.conn.commit()
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self.logger.debug(f"Inserted {len(data_list)} records")
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return len(data_list)
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except Exception as e:
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self.logger.error(f"Batch execution failed: {str(e)}")
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self.conn.rollback()
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raise
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def table_exists(self, table_name):
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with self.conn.cursor() as cursor:
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cursor.execute(
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"SELECT EXISTS (SELECT FROM pg_tables WHERE schemaname = 'public' AND tablename = %s)",
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(table_name,)
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)
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return cursor.fetchone()[0]
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0
src/core/init.py
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0
src/core/init.py
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51
src/core/utils.py
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51
src/core/utils.py
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@@ -0,0 +1,51 @@
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import os
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import logging
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import hashlib
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from datetime import datetime
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def setup_logging(level="INFO"):
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"""配置日志"""
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logging.basicConfig(
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level=level,
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format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
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handlers=[logging.StreamHandler()]
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)
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def generate_job_id(prefix=""):
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"""生成唯一Job ID"""
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timestamp = datetime.now().strftime("%Y%m%d-%H%M%S")
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return f"{prefix}{timestamp}"
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def validate_directory(path, create=True):
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"""验证目录是否存在,可选创建"""
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if not os.path.exists(path):
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if create:
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os.makedirs(path, exist_ok=True)
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logging.info(f"Created directory: {path}")
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else:
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raise ValueError(f"Directory not found: {path}")
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return True
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def calculate_file_hash(filepath, algorithm="md5"):
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"""计算文件哈希值"""
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hasher = hashlib.new(algorithm)
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with open(filepath, 'rb') as f:
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for chunk in iter(lambda: f.read(4096), b''):
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hasher.update(chunk)
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return hasher.hexdigest()
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def size_to_human_readable(size_bytes):
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"""字节数转可读格式"""
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for unit in ['B', 'KB', 'MB', 'GB', 'TB']:
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if size_bytes < 1024.0:
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return f"{size_bytes:.2f} {unit}"
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size_bytes /= 1024.0
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return f"{size_bytes:.2f} PB"
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def parse_env_vars(prefix="DB_"):
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"""解析带前缀的环境变量"""
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return {
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k[len(prefix):].lower(): v
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for k, v in os.environ.items()
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if k.startswith(prefix)
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}
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54
src/main.py
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54
src/main.py
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import argparse
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import importlib
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import logging
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import os
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from core.config import Config
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from core.utils import setup_logging
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def main():
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# 设置命令行参数
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parser = argparse.ArgumentParser(description='Databridge Data Pipeline')
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parser.add_argument('--pipeline', type=str, required=True,
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help='Pipeline type to execute')
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args = parser.parse_args()
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# 配置日志
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log_level = os.getenv('LOG_LEVEL', 'INFO')
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setup_logging(log_level)
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logger = logging.getLogger(__name__)
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try:
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# 动态加载管道模块
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try:
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pipeline_module = importlib.import_module(f'pipelines.{args.pipeline}')
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except ImportError as e:
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logger.error(f"Pipeline module not found: {args.pipeline}")
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raise
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# 获取管道类 (命名约定: PipelineName + "Pipeline")
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pipeline_class_name = args.pipeline.replace('_', ' ').title().replace(' ', '') + 'Pipeline'
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if not hasattr(pipeline_module, pipeline_class_name):
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logger.error(f"Pipeline class not found: {pipeline_class_name}")
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raise ImportError(f"Class {pipeline_class_name} not found in {args.pipeline} module")
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PipelineClass = getattr(pipeline_module, pipeline_class_name)
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# 创建配置和管道实例
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config = Config()
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pipeline = PipelineClass(config)
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# 运行管道
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pipeline.run()
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logger.info("Pipeline completed successfully")
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exit(0)
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except Exception as e:
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logger.error(f"Pipeline execution failed: {str(e)}", exc_info=True)
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exit(1)
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if __name__ == "__main__":
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main()
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30
src/pipelines/base_pipeline.py
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30
src/pipelines/base_pipeline.py
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@@ -0,0 +1,30 @@
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import abc
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import logging
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class BasePipeline(metaclass=abc.ABCMeta):
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def __init__(self, config):
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self.config = config
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self.logger = logging.getLogger(self.__class__.__name__)
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@abc.abstractmethod
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def validate_config(self):
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"""验证管道配置"""
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pass
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@abc.abstractmethod
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def process(self):
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"""执行管道处理"""
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pass
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def run(self):
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"""运行管道"""
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try:
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self.logger.info(f"Starting {self.__class__.__name__} pipeline")
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self.validate_config()
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result = self.process()
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self.logger.info(f"Pipeline completed: {self.__class__.__name__}")
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return result
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except Exception as e:
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self.logger.error(f"Pipeline failed: {str(e)}", exc_info=True)
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raise
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58
src/pipelines/csv_export.py
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58
src/pipelines/csv_export.py
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@@ -0,0 +1,58 @@
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import os
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import csv
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import logging
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from core.database import Database
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from core.utils import size_to_human_readable
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from base_pipeline import BasePipeline
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class CSVExportPipeline(BasePipeline):
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def __init__(self, config):
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super().__init__(config)
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self.data_root = os.getenv('DATA_PVC_MOUNT_PATH', '/data')
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self.output_dir = os.getenv('OUTPUT_DIR', os.path.join(self.data_root, 'output'))
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self.query = os.getenv('EXPORT_QUERY', 'SELECT * FROM source_table')
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def validate_config(self):
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# 确保输出目录存在
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if not os.path.exists(self.output_dir):
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os.makedirs(self.output_dir, exist_ok=True)
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self.logger.info(f"Created output directory: {self.output_dir}")
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def process(self):
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# 连接数据库
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db_config = self.config.get_database_config()
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db = Database(**db_config)
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# 执行查询并导出
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output_file = os.path.join(self.output_dir, f"export_{datetime.now().strftime('%Y%m%d_%H%M%S')}.csv")
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self.logger.info(f"Exporting data to: {output_file}")
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with open(output_file, 'w', newline='') as csvfile:
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writer = None
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row_count = 0
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with db.conn.cursor() as cursor:
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cursor.execute(self.query)
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# 获取列名
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column_names = [desc[0] for desc in cursor.description]
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writer = csv.DictWriter(csvfile, fieldnames=column_names)
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writer.writeheader()
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# 写入数据
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for row in cursor:
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row_dict = dict(zip(column_names, row))
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writer.writerow(row_dict)
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row_count += 1
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if row_count % 1000 == 0:
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self.logger.info(f"Exported {row_count} rows...")
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# 关闭数据库连接
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db.disconnect()
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# 记录结果
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file_size = os.path.getsize(output_file)
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self.logger.info(f"Export completed: {row_count} rows, {size_to_human_readable(file_size)}")
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return row_count
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185
src/pipelines/dbf_to_postgres.py
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185
src/pipelines/dbf_to_postgres.py
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@@ -0,0 +1,185 @@
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import os
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import pandas as pd
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from dbfread import DBF
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from itertools import islice
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from datetime import datetime, timedelta
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import logging
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from core.database import Database
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from core.utils import size_to_human_readable, calculate_file_hash
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from pipelines.base_pipeline import BasePipeline
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class DbfToPostgresPipeline(BasePipeline):
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def __init__(self, config):
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super().__init__(config)
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# todo:本地调试打开
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# self.data_root = 'D:\disney_test'
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# self.mapping_file = 'D:\disney_test\disney-mapping.xlsx'
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# todo:本地调试打开
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self.data_root = os.getenv('DATA_PVC_MOUNT_PATH', '/data')
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self.mapping_file = os.getenv('MAPPING_FILE')
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self.dbf_dir = os.getenv('DBF_INPUT_DIR', os.path.join(self.data_root, 'dbf-input'))
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self.db = None
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def validate_config(self):
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# 确保目录存在
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if not os.path.exists(self.dbf_dir):
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raise ValueError(f"DBF directory not found: {self.dbf_dir}")
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# 如果有映射文件,验证存在
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if self.mapping_file and not os.path.exists(self.mapping_file):
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self.logger.warning(f"Mapping file not found: {self.mapping_file}")
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self.mapping_file = None
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def load_mapping(self):
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"""加载映射关系"""
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if not self.mapping_file:
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self.logger.info("No mapping file provided, using default mapping")
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return {}
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try:
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self.logger.info(f"Loading mapping from {self.mapping_file}")
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mapping_df = pd.read_excel(self.mapping_file, sheet_name="Mapping")
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# 清理数据
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mapping_df = mapping_df.dropna(subset=['AS_SERIAL', 'ID', 'data_field_sequence_id'])
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mapping_df = mapping_df[['AS_SERIAL', 'ID', 'data_field_sequence_id',
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'device_instance_capability_id', 'device_capability_point_id']]
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# 创建映射字典
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mapping_dict = {}
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for _, row in mapping_df.iterrows():
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key = (str(row['AS_SERIAL']), str(row['ID']))
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if key not in mapping_dict:
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mapping_dict[key] = []
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mapping_dict[key].append({
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'seq_id': int(row['data_field_sequence_id']),
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'cap_id': int(row['device_instance_capability_id']),
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'point_id': int(row['device_capability_point_id'])
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})
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self.logger.info(f"Loaded {len(mapping_dict)} mapping entries")
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return mapping_dict
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except Exception as e:
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self.logger.error(f"Failed to load mapping: {str(e)}")
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return {}
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def process(self):
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# 加载映射关系
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mapping_dict = self.load_mapping()
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# 连接数据库
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# todo:本地调试时打开
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db_config = self.config.get_database_config()
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self.db = Database(**db_config)
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# todo:本地调试时打开
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# 处理文件
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total_processed = 0
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for filename in os.listdir(self.dbf_dir):
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if filename.casefold().endswith('.dbf'):
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file_path = os.path.join(self.dbf_dir, filename)
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processed = self.process_file(file_path, mapping_dict)
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total_processed += processed
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self.logger.info(f"Processed {processed} records from {filename}")
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# 关闭数据库连接
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# todo:本地调试时打开
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self.db.disconnect()
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# todo:本地调试时打开
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return total_processed
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def process_file(self, file_path, mapping_dict):
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self.logger.info(f"Processing file: {os.path.basename(file_path)}")
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try:
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# 获取文件信息
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file_size = os.path.getsize(file_path)
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file_hash = calculate_file_hash(file_path)
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self.logger.info(f"File info: Size={size_to_human_readable(file_size)}, Hash={file_hash}")
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dbf_table = DBF(file_path, encoding='utf-8')
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batch_data = []
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processed_records = 0
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batch_size = int(os.getenv('BATCH_SIZE', 1000))
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self.logger.info(f"the DBF file: {os.path.basename(file_path)} have record: #{len(dbf_table.records)}")
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# 分片读取是个大坑,不能分片
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# dbf_table = DBF(file_path, load=False, encoding='utf-8')
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# chunk_idx = 0
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# while True:
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# chunk = list(islice(dbf_table._iter_records(), 100000))
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# if not chunk: # 读完了
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# break
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# chunk_idx += 1
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# # 处理这十万行
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# self.logger.info(f"Handle chunk: #{chunk_idx} of file: {os.path.basename(file_path)}")
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for record in dbf_table:
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try:
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as_serial = str(record.get('AS_SERIAL', '')).strip()
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device_id = str(record.get('ID', '')).strip()
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key = (as_serial, device_id)
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# 跳过没有映射的记录
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if key not in mapping_dict:
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continue
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# 处理时间 (+8小时)
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dt_str = record.get('DATETIME', '')
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if not dt_str:
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continue
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original_time = datetime.strptime(dt_str, '%Y-%m-%d %H:%M:%S')
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target_time = original_time + timedelta(hours=8)
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formatted_time = target_time.strftime('%Y-%m-%d %H:%M:%S+00')
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# 处理每个映射
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for mapping in mapping_dict[key]:
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data_field = f"DATA{mapping['seq_id']:02d}"
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value = record.get(data_field)
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if value is None:
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continue
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batch_data.append((
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formatted_time,
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mapping['cap_id'],
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mapping['point_id'],
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float(value)
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))
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# 批量插入
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if len(batch_data) >= batch_size:
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# todo:本地调试先注释掉
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self.db.execute_batch(
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"INSERT INTO target_table (t, device_instance_capability_id, point_id, value) VALUES (%s, %s, %s, %s)",
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batch_data
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)
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# todo:本地调试先注释掉
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processed_records += len(batch_data)
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self.logger.debug(f"Processed {processed_records} records from {os.path.basename(file_path)}")
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batch_data = []
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except Exception as e:
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self.logger.warning(f"Skipping record due to error: {str(e)}")
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continue
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# 插入剩余记录
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if batch_data:
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# todo:本地调试先注释掉
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self.db.execute_batch(
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"INSERT INTO target_table (t, device_instance_capability_id, point_id, value) VALUES (%s, %s, %s, %s)",
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batch_data
|
||||
)
|
||||
# todo:本地调试先注释掉
|
||||
processed_records += len(batch_data)
|
||||
self.logger.debug(f"Processed {processed_records} records from {os.path.basename(file_path)}")
|
||||
|
||||
self.logger.info(f"Processed {processed_records} records from {os.path.basename(file_path)}")
|
||||
return processed_records
|
||||
|
||||
except Exception as e:
|
||||
self.logger.error(f"Failed to process file {file_path}: {str(e)}")
|
||||
return 0
|
||||
0
src/pipelines/init.py
Normal file
0
src/pipelines/init.py
Normal file
Reference in New Issue
Block a user