Notifications¶

Slack¶

Overview¶

The Slack module leverages the Slack API and provides way to easily send notifications through Slack. It is recommended that you reference the Slack API documentation for additional details and information.

Note

API Tokens

Slack API Tokens are required to use this module. To obtain an API Token, create a Slack App associated with the desired Slack workspace. Once you create the app, navigate to ‘OAuth & Permissions’ and add the following OAuth scopes:

channels:read, users:read, chat:write, and files:write

You can now install the Slack App, which will produce an API Token. Note that you can change the scopes any time, but you must reinstall the app each time (your API Token will stay the same).
Slack has rate limits on all its endpoints.

QuickStart¶

To call the Slack class you can either store the API Token as an environment variable SLACK_API_TOKEN or pass it in as an argument.

from parsons import Slack

slack = Slack() # Initiate class via environment variable api token

slack = Slack(api_key='my-api-tkn') # Pass api token directly

You can then send messages:

from parsons import Slack

slack = Slack()

# send a simple messsage
slack.message_channel("my_channel", "Hello from python script")

# share a file
slack.upload_file(["channel_1", "channel_2"], "my_slack_file.txt")

API¶

class parsons.notifications.slack.Slack(api_key=None)[source]¶

channels(fields=None, exclude_archived=False, types=None)[source]¶

Return a list of all channels in a Slack team.

Parameters:

fields – list A list of the fields to return. By default, only the channel id and name are returned. See https://api.slack.com/methods/conversations.list for a full list of available fields. Notes: nested fields are unpacked.
exclude_archived – bool Set to True to exclude archived channels from the list. Default is false.
types – list Mix and match channel types by providing a list of any combination of public_channel, private_channel, mpim (aka group messages), or im (aka 1-1 messages).

Returns:

Parsons Table: See Parsons Table for output options.

users(fields=None)[source]¶

Return a list of all users in a Slack team.

Parameters:

fields – list A list of the fields to return. By default, only the user id and name and deleted status are returned. See https://api.slack.com/methods/users.list for a full list of available fields. Notes: nested fields are unpacked.

Returns:

Parsons Table: See Parsons Table for output options.

classmethod message(channel, text, webhook=None, parent_message_id=None)[source]¶

Send a message to a Slack channel with a webhook instead of an api_key. You might not have the full-access API key but still want to notify a channel

Parameters:

channel – str The name or id of a public_channel, a private_channel, or an im (aka 1-1 message).
text – str Text of the message to send.
webhook – str If you have a webhook url instead of an api_key Looks like: https://hooks.slack.com/services/Txxxxxxx/Bxxxxxx/Dxxxxxxx
parent_message_id – str The ts value of the parent message. If used, this will thread the message.

message_channel(channel, text, parent_message_id=None, **kwargs)[source]¶

Send a message to a Slack channel

Parameters:

channel – str The name or id of a public_channel, a private_channel, or an im (aka 1-1 message).
text – str Text of the message to send.
parent_message_id – str The ts value of the parent message. If used, this will thread the message.
**kwargs –
kwargs - as_user: str

This is a deprecated argument. Use optional username, icon_url, and icon_emoji args to customize the attributes of the user posting the message. See https://api.slack.com/methods/chat.postMessage#legacy_authorship for more information about legacy authorship
- Additional arguments for chat.postMessage API call. See documentation for more info.

Returns:

A response json

Return type:

dict

upload_file(channels, filename, filetype=None, initial_comment=None, title=None, is_binary=False)[source]¶

Upload a file to Slack channel(s).

Parameters:

channels – list or str The list of channel names or IDs where the file will be shared. Can be a single channel name/ID (str) or a list of channel names/IDs.
filename – str The path to the file to be uploaded.
filetype – str A file type identifier. If None, type will be inferred base on file extension. This is used to determine what fields are available for that object. See https://api.slack.com/types/file for a list of valid types and for more information about the file object.
initial_comment – str The text of the message to send along with the file.
title – str Title of the file to be uploaded.
is_binary – bool If True, open this file in binary mode. This is needed if uploading binary files. Defaults to False.

Returns:

A response json

Return type:

dict

:members:

Gmail¶

Overview¶

The Gmail module leverages the Gmail API and provides an way to easily send notifications through email. It is recommended that you reference the Gmail API documentation for additional details and information.

Note

Credentials and token

Credentials are required to use the class
You will need to pass in the path to the credentials and to where a generated token will be saved. Typically you’ll get the credentials from the Google Developer Console (look for the “Gmail API”).

Note

6MB Attachment Size Limit

Currently there is a limit of 6MB when sending attachments.

QuickStart¶

To call the Gmail class you will need to pass in the path to a credentials.json and the path to tokens.json.

from parsons import Gmail

gmail = Gmail(
   creds_path="~/secret_location/credentials.json",
   token_path="~/secret_location/token.json")

The easiest way to send a message:

gmail.send_email(
  "sender@email.com",
  "recipient@email.com",
  "The Subject",
  "This is the text body of the email")

The current version also supports sending html emails and emails with attachments.

gmail.send_email(
  "sender@email.com",
  "recipient@email.com",
  "An html email with attachments",
  "This is the text body of the email",
  html="<p>This is the html part of the email</p>",
  files=['file1.txt', 'file2.txt'])

Additionally, you can create a raw email messages and send it. See below for more details.

API¶

class parsons.notifications.gmail.Gmail(creds_path=None, token_path=None, user_id='me')[source]¶

Create a Gmail object, for sending emails.

Parameters:

creds_path – str The path to the credentials.json file.
token_path – str The path to the token.json file.
user_id – str Optional; Sender email address. Defaults to the special value “me” which is used to indicate the authenticated user.

send_email(sender, to, subject, message_text, message_html=None, files=None)¶

Send an email message.

Parameters:

sender – str Email address of the sender.
to – str or list Email address(es) of the receiver(s). Must be in correct email string syntax. For example, name@email.com or “Name” <email@email.com>.
subject – str The subject of the email message.
message_text – str The text of the email message.
message_html – str The html formatted text of the email message. If ommitted, the email is sent a text-only body.
files – str or list The path to the file(s) to be attached.

:members:

SMTP¶

Overview¶

The SMTP module enables the sending of email through a generic SMTP server. If you have an email server other than Gmail this is likely the best way to send emails with Parsons.

Note

Credentials

Credentials are required to use the class. You’ll need to provide a valid username and password for the SMTP server you are using.

QuickStart¶

To initialize the SMTP class you will need to tell it how to connect to the SMTP server:

from parsons import SMTP

smtp = SMTP(
    host="fake.host.com",
    port=9999,
    username="my_username",
    password="dont_use_this_password"
)

Note

Environment Variables

Instead of passing in values to initialize an instance of the SMTP class, you can set environment variables to hold the values. The names of the environment variables are the names of the arguments capitalized and prefixed with SMTP_. For example, SMTP_HOST or SMTP_PASSWORD. If both an environment variable and an initialization argument are present, the argument will take precedence.

The easiest way to send a message:

smtp.send_email(
    "sender@email.com",
    "recipient@email.com",
    "The Subject",
    "This is the text body of the email"
)

The current version also supports sending html emails and emails with attachments.

smtp.send_email(
    "sender@email.com",
    "recipient@email.com",
    "An html email with attachments",
    "This is the text body of the email",
    html="<p>This is the html part of the email</p>",
    files=['file1.txt', 'file2.txt']
)

API¶

class parsons.notifications.smtp.SMTP(host=None, port=None, username=None, password=None, tls=None, close_manually=False)[source]¶

Create a SMTP object, for sending emails.

Parameters:

host – str The host of the SMTP server
port – int The port of the SMTP server (Default is 587 for TLS)
username – str The username of the SMTP server login
password – str The password of the SMTP server login
tls – bool Defaults to True – pass “0” or “False” to SMTP_TLS to disable
close_manually – bool When set to True, send_message will not close the connection

send_email(sender, to, subject, message_text, message_html=None, files=None)¶

Send an email message.

Parameters:

sender – str Email address of the sender.
to – str or list Email address(es) of the receiver(s). Must be in correct email string syntax. For example, name@email.com or “Name” <email@email.com>.
subject – str The subject of the email message.
message_text – str The text of the email message.
message_html – str The html formatted text of the email message. If ommitted, the email is sent a text-only body.
files – str or list The path to the file(s) to be attached.