Smtplib is not triggering mail for multiple trigger at same time

首先检查 Celery 任务代码和 email_notification.py，尤其是 _email_notification 以及 smtplib sendmail 路径。复现任务的同时执行，并检查每个任务是否都到达 sendmail，以及是否报告了异常；完成的标准是确定消息缺失的原因，并添加一个有针对性的回归测试或清晰的复现用例。

Celery tasks:

`celeryApp = Celery(
"celerytasks", broker="pyamqp://localhost//", timezone="Canada/Eastern"
)

@celeryApp.on_after_configure.connect
def setup_periodic_tasks(sender, **kwargs):

# celery beats setup

notification = Notification.get_all_notification()

print("Celery Initiated")

for notify in range(len(notification)):

    # Creating worker task for every notification

    notify_time = notification_time(notification["time"][notify])

    # scheduling perioding task based notification table
    result = sender.add_periodic_task(
        notify_time,
        defect_task_call.s(
            str(notification["id"][notify]),
            notification["defect"][notify],
            notification["email"][notify],
            notification["time"][notify],
            notification["condition"][notify],
            str(notification["value"][notify]),
            notification["line"][notify],
            notification["directory"][notify],
        ),
        name=notification["id"][notify],
    )

@celeryApp.task(name="alert")
def defect_task_call(
id: str,
defect_type: str,
receiver_email: str,
time: str,
condition: str,
value: str,
line: str,
directory: str,
):

"""Worker Task based on every notification

Args:
    id: str,             -> ID of the notification
    defect_type: str,
    receiver_email: str, -> Notification reciever
    time: str,           -> time schedule
    condition: str,
    value: str,
    line: str,
    directory: str,      -> Directory recived

Returns:
    condition :str
"""

value = int(value)

# print("TaskID ",celeryApp.task.id)
print("Wrk ID", celeryApp.current_worker_task.request.id)
print(defect_type)
print(id)

# Hourly or minute check
if "M" in time:
    parts = Part.get_last_n_minute_types(
        line_sub_id=line,
        minute=parts_time(time),
        defect=defect_type,
        approved=True,
    )

if "H" in time:
    parts = Part.get_last_n_hour_types(
        line_sub_id=line,
        hour=parts_time(time),
        defect=defect_type,
        approved=True,
    )

if parts.empty:
    alert = notification_condition(condition, parts.count()["Defect Type"], value)

    # email notification for alerts
    if alert == True:

        mail_subject = (
            "Alert Mail for Defect Type: "
            + str(defect_type).replace("_", " ").title()
        )
        body_content = (
            "Threshold reached alert of Defect: ' "
            + str(defect_type).replace("_", " ").title()
            + " '"
        )

        table_content = (
            """

        <tr>
            <th>Defect Type</th>
            <th>Time Period</th>
            <th>Current Count</th>
            <th>Condition</th>
            <th>Alert Value</th>
            <th>Directory</th>
            <th>Line</th>
        </tr>

         <tr>
            <td>"""
            + str(defect_type).replace("_", " ").title()
            + """</td>
            <td>"""
            + email_time(time)
            + """</td>
            <td>"""
            + str(parts.count()["Defect Type"])
            + """</td>
            <td>"""
            + email_condition(condition)
            + """</td>
            <td>"""
            + str(value)
            + """</td>
            <td>"""
            + directory
            + """</td>
            <td>"""
            + line
            + """</td>
        </tr>

        """
        )

        email_notification._email_notification(
            mail_subject=mail_subject,
            body_content=body_content,
            receiver_email=receiver_email,
            table_content=table_content,
        )
print("Mail Sent")`

email_notification.py

`def _email_notification(
mail_subject: str, body_content: str, receiver_email: str, table_content=""
):

"""Function snds mail to reciever mail ids

Args:
    mail_subject: str,
    body_content: str,
    receiver_email: str,
    table_content: table contents

"""

Mail_subject = "Testing Cendiant Mail Bot"
if mail_subject != "":
    Mail_subject = mail_subject

Body_content = "I'm Cendiant, The Mail Bot."
if body_content != "":
    Body_content = body_content

body = (
    """

<html>
<head>
<style>
    #mail {

        width: 70%;
        border: 15px solid green;
        padding: 50px;
        margin: 20px;
        }

        table {
            font-family: arial, sans-serif;
            border-collapse: collapse;
            width: 100%;
            }

            td, th {
            border: 1px solid #dddddd;
            text-align: left;
            padding: 8px;
            }

            tr:nth-child(even) {
            background-color: #dddddd;
            }
</style>
</head>
<body>

<div id="mail">

    <b><i>Hi There,</i></b><br>

    &nbsp;&nbsp;&nbsp;"""
    + Body_content
    + """<br>

    <br>

    <table>

        """
    + table_content
    + """

    </table>


    <br><br>
    Thank you<br>
   

</div>

</body>
</html>

"""
)

email_port = config["email"]["port"]
email_domain = config["email"]["domain"]

email_id = config["email"]["sender"]
app_password = config["email"]["app_password"]
Receiver_email = config["email"]["sender"]

if receiver_email != "":
    Receiver_email = receiver_email

email_server = smtplib.SMTP(email_domain, email_port)
email_content = MIMEMultipart("alternative")
email_content["Subject"] = Mail_subject
email_body = MIMEText(body, "html")
email_content.attach(email_body)

email_server.starttls()
email_server.login(email_id, app_password)

# Sending Email
try:
    time.sleep(5)
    email_server.sendmail(email_id, Receiver_email, email_content.as_string())
    email_server.quit()

except Exception as es:
    print(str(es))`

Issue:
Some mails are not triggered by smtplib
but the tasks is received and triggered