添加日志转发后Digital Ocean Function返回通用错误代码

我在Digital Ocean App Platform中测试一个简单的Python函数，功能是导入psycopg2并连接关联的Postgres数据库，返回数据库版本。该函数原本运行正常，但为DO应用及函数添加日志转发至Betterstack（Logtail）后出现异常。

添加日志转发的原因：DO官方支持确认，若函数为独立函数，仅能通过命令行工具doctl查看日志；若函数属于应用的一部分，则需将日志转发至外部日志服务。我在平台内无法直接获取函数日志，所以配置了Logtail转发。

正常返回结果 #

原本函数会返回成功消息：

{
  "message": "Successfully imported dependencies and found DB version RealDictRow([('version', 'PostgreSQL 16.9 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 14.2.1 20240912 (Red Hat 14.2.1-3), 64-bit')]).",
  "psycopg2_version": "2.9.10 (dt dec pq3 ext lo64)"
}

异常返回结果 #

现在函数不再返回成功消息，而是返回Digital Ocean抛出的通用错误：

{
"code": "abc123581b123ea5e3d73848",
"error": "There was an error processing your request."
}

项目配置（project.yml） #

根据DO支持建议配置的LOG_DESTINATIONS：

environment:
  DB_HOST: "${DB_HOST}"
  DB_PORT: "${DB_PORT}"
  DB_USER: "${DB_USER}"
  DB_PASSWORD: "${DB_PASSWORD}"
  DB_NAME: "${DB_NAME}"
  DB_SSL_MODE: "${DB_SSL_MODE}"
  LOG_DESTINATIONS: "[{'logtail':{'token':'${LOGTAIL_TOKEN}'}}]"
packages:
  - name: db-test
    actions:
      - name: db-tester
        runtime: 'python:default'
        web: true

Python函数代码 #

import os
import psycopg2
from psycopg2.extras import RealDictCursor

def get_db_connection():
    """Create a connection to the PostgreSQL database"""
    print("Connecting to the database...")
    connection = psycopg2.connect(
        host=os.environ.get("DB_HOST"),
        port=os.environ.get("DB_PORT"),
        dbname=os.environ.get("DB_NAME"),
        user=os.environ.get("DB_USER"),
        password=os.environ.get("DB_PASSWORD"),
        sslmode=os.environ.get("DB_SSL_MODE"),
        cursor_factory=RealDictCursor
    )
    return connection

def main(args):
    try:
        print("Starting the receipt-submitter function...")
        version = psycopg2.__version__
        conn = get_db_connection()
        cursor = conn.cursor()
        cursor.execute("SELECT version();")
        db_version = cursor.fetchone()
        cursor.close()
        conn.close()

        # Test imports were successful
        return {
            "body": {
                "message": f"Successfully imported dependencies and found DB version {db_version}.",
                "psycopg2_version": version
            }
        }
    except Exception as e:
        print("Exception thrown.")
        return {
            "body": {
                "error": f"{str(e)}"
            },
            "statusCode": 500
        }

内容的提问来源于stack exchange，提问作者j3py