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801 lines
27 KiB
801 lines
27 KiB
# -*- coding: utf-8 -*-
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# BSD 3-Clause License
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#
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# Apprise - Push Notification Library.
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# Copyright (c) 2023, Chris Caron <lead2gold@gmail.com>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# 3. Neither the name of the copyright holder nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# Signup @ https://www.sparkpost.com
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#
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# Ensure you've added a Senders Domain and have generated yourself an
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# API Key at:
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# https://app.sparkpost.com/dashboard
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# Note: For SMTP Access, your API key must have at least been granted the
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# 'Send via SMTP' privileges.
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# From here you can click on the domain you're interested in. You can acquire
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# the API Key from here which will look something like:
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# 1e1d479fcf1a87527e9411e083c700689fa1acdc
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#
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# Knowing this, you can buid your sparkpost url as follows:
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# sparkpost://{user}@{domain}/{apikey}
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# sparkpost://{user}@{domain}/{apikey}/{email}
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#
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# You can email as many addresses as you want as:
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# sparkpost://{user}@{domain}/{apikey}/{email1}/{email2}/{emailN}
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#
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# The {user}@{domain} effectively assembles the 'from' email address
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# the email will be transmitted from. If no email address is specified
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# then it will also become the 'to' address as well.
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#
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# The {domain} must cross reference a domain you've set up with Spark Post
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#
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# API Documentation: https://developers.sparkpost.com/api/
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# Specifically: https://developers.sparkpost.com/api/transmissions/
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import requests
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import base64
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from json import loads
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from json import dumps
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from .NotifyBase import NotifyBase
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from ..common import NotifyType
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from ..common import NotifyFormat
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from ..utils import is_email
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from email.utils import formataddr
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from ..utils import validate_regex
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from ..utils import parse_emails
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from ..utils import parse_bool
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from ..AppriseLocale import gettext_lazy as _
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# Provide some known codes SparkPost uses and what they translate to:
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# Based on https://www.sparkpost.com/docs/tech-resources/extended-error-codes/
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SPARKPOST_HTTP_ERROR_MAP = {
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400: 'A bad request was made to the server',
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401: 'Invalid User ID and/or Unauthorized User',
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403: 'Permission Denied; the provided API Key was not valid',
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404: 'There is a problem with the server query URI.',
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405: 'Invalid HTTP method',
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420: 'Sending limit reached.',
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422: 'Invalid data/format/type/length',
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429: 'To many requests per sec; rate limit',
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}
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class SparkPostRegion:
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"""
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Regions
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"""
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US = 'us'
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EU = 'eu'
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# SparkPost APIs
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SPARKPOST_API_LOOKUP = {
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SparkPostRegion.US: 'https://api.sparkpost.com/api/v1',
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SparkPostRegion.EU: 'https://api.eu.sparkpost.com/api/v1',
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}
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# A List of our regions we can use for verification
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SPARKPOST_REGIONS = (
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SparkPostRegion.US,
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SparkPostRegion.EU,
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)
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class NotifySparkPost(NotifyBase):
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"""
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A wrapper for SparkPost Notifications
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"""
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# The default descriptive name associated with the Notification
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service_name = 'SparkPost'
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# The services URL
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service_url = 'https://sparkpost.com/'
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# All notification requests are secure
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secure_protocol = 'sparkpost'
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# SparkPost advertises they allow 300 requests per minute.
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# 60/300 = 0.2
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request_rate_per_sec = 0.20
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# Words straight from their website:
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# https://developers.sparkpost.com/api/#header-rate-limiting
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# These limits are dynamic, but as a general rule, wait 1 to 5 seconds
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# after receiving a 429 response before requesting again.
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# As a simple work around, this is what we will do... Wait X seconds
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# (defined below) before trying again when we get a 429 error
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sparkpost_retry_wait_sec = 5
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# The maximum number of times we'll retry to send our message when we've
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# reached a throttling situatin before giving up
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sparkpost_retry_attempts = 3
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# The maximum amount of emails that can reside within a single
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# batch transfer based on:
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# https://www.sparkpost.com/docs/tech-resources/\
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# smtp-rest-api-performance/#sending-via-the-transmission-rest-api
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default_batch_size = 2000
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# A URL that takes you to the setup/help of the specific protocol
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setup_url = 'https://github.com/caronc/apprise/wiki/Notify_sparkpost'
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# Default Notify Format
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notify_format = NotifyFormat.HTML
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# Define object templates
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templates = (
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'{schema}://{user}@{host}:{apikey}/',
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'{schema}://{user}@{host}:{apikey}/{targets}',
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)
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# Define our template tokens
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template_tokens = dict(NotifyBase.template_tokens, **{
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'user': {
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'name': _('User Name'),
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'type': 'string',
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'required': True,
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},
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'host': {
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'name': _('Domain'),
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'type': 'string',
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'required': True,
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},
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'apikey': {
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'name': _('API Key'),
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'type': 'string',
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'private': True,
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'required': True,
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},
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'targets': {
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'name': _('Target Emails'),
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'type': 'list:string',
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},
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})
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# Define our template arguments
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template_args = dict(NotifyBase.template_args, **{
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'name': {
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'name': _('From Name'),
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'type': 'string',
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'map_to': 'from_name',
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},
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'region': {
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'name': _('Region Name'),
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'type': 'choice:string',
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'values': SPARKPOST_REGIONS,
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'default': SparkPostRegion.US,
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'map_to': 'region_name',
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},
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'to': {
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'alias_of': 'targets',
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},
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'cc': {
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'name': _('Carbon Copy'),
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'type': 'list:string',
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},
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'bcc': {
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'name': _('Blind Carbon Copy'),
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'type': 'list:string',
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},
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'batch': {
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'name': _('Batch Mode'),
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'type': 'bool',
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'default': False,
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},
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})
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# Define any kwargs we're using
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template_kwargs = {
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'headers': {
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'name': _('Email Header'),
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'prefix': '+',
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},
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'tokens': {
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'name': _('Template Tokens'),
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'prefix': ':',
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},
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}
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def __init__(self, apikey, targets, cc=None, bcc=None, from_name=None,
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region_name=None, headers=None, tokens=None, batch=False,
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**kwargs):
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"""
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Initialize SparkPost Object
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"""
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super().__init__(**kwargs)
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# API Key (associated with project)
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self.apikey = validate_regex(apikey)
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if not self.apikey:
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msg = 'An invalid SparkPost API Key ' \
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'({}) was specified.'.format(apikey)
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self.logger.warning(msg)
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raise TypeError(msg)
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# Validate our username
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if not self.user:
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msg = 'No SparkPost username was specified.'
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self.logger.warning(msg)
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raise TypeError(msg)
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# Acquire Email 'To'
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self.targets = list()
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# Acquire Carbon Copies
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self.cc = set()
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# Acquire Blind Carbon Copies
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self.bcc = set()
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# For tracking our email -> name lookups
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self.names = {}
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# Store our region
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try:
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self.region_name = self.template_args['region']['default'] \
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if region_name is None else region_name.lower()
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if self.region_name not in SPARKPOST_REGIONS:
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# allow the outer except to handle this common response
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raise
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except:
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# Invalid region specified
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msg = 'The SparkPost region specified ({}) is invalid.' \
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.format(region_name)
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self.logger.warning(msg)
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raise TypeError(msg)
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# Get our From username (if specified)
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self.from_name = from_name
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# Get our from email address
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self.from_addr = '{user}@{host}'.format(user=self.user, host=self.host)
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if not is_email(self.from_addr):
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# Parse Source domain based on from_addr
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msg = 'Invalid ~From~ email format: {}'.format(self.from_addr)
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self.logger.warning(msg)
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raise TypeError(msg)
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self.headers = {}
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if headers:
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# Store our extra headers
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self.headers.update(headers)
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self.tokens = {}
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if tokens:
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# Store our template tokens
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self.tokens.update(tokens)
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# Prepare Batch Mode Flag
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self.batch = batch
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if targets:
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# Validate recipients (to:) and drop bad ones:
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for recipient in parse_emails(targets):
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result = is_email(recipient)
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if result:
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self.targets.append(
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(result['name'] if result['name'] else False,
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result['full_email']))
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continue
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self.logger.warning(
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'Dropped invalid To email '
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'({}) specified.'.format(recipient),
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)
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else:
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# If our target email list is empty we want to add ourselves to it
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self.targets.append(
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(self.from_name if self.from_name else False, self.from_addr))
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# Validate recipients (cc:) and drop bad ones:
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for recipient in parse_emails(cc):
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email = is_email(recipient)
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if email:
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self.cc.add(email['full_email'])
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# Index our name (if one exists)
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self.names[email['full_email']] = \
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email['name'] if email['name'] else False
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continue
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self.logger.warning(
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'Dropped invalid Carbon Copy email '
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'({}) specified.'.format(recipient),
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)
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# Validate recipients (bcc:) and drop bad ones:
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for recipient in parse_emails(bcc):
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email = is_email(recipient)
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if email:
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self.bcc.add(email['full_email'])
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# Index our name (if one exists)
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self.names[email['full_email']] = \
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email['name'] if email['name'] else False
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continue
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self.logger.warning(
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'Dropped invalid Blind Carbon Copy email '
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'({}) specified.'.format(recipient),
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)
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def __post(self, payload, retry):
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"""
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Performs the actual post and returns the response
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"""
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# Prepare our headers
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headers = {
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'User-Agent': self.app_id,
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'Accept': 'application/json',
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'Content-Type': 'application/json',
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'Authorization': self.apikey,
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}
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# Prepare our URL as it's based on our hostname
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url = '{}/transmissions/'.format(
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SPARKPOST_API_LOOKUP[self.region_name])
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# Some Debug Logging
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self.logger.debug('SparkPost POST URL: {} (cert_verify={})'.format(
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url, self.verify_certificate))
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if 'attachments' in payload['content']:
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# Since we print our payload; attachments make it a bit too noisy
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# we just strip out the data block to accomodate it
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log_payload = \
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{k: v for k, v in payload.items() if k != "content"}
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log_payload['content'] = \
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{k: v for k, v in payload['content'].items()
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if k != "attachments"}
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log_payload['content']['attachments'] = \
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[{k: v for k, v in x.items() if k != "data"}
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for x in payload['content']['attachments']]
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else:
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# No tidying is needed
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log_payload = payload
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self.logger.debug('SparkPost Payload: {}' .format(log_payload))
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wait = None
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# For logging output of success and errors; we get a head count
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# of our outbound details:
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verbose_dest = ', '.join(
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[x['address']['email'] for x in payload['recipients']]) \
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if len(payload['recipients']) <= 3 \
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else '{} recipients'.format(len(payload['recipients']))
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# Initialize our response object
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json_response = {}
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# Set ourselves a status code
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status_code = -1
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while 1: # pragma: no branch
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# Always call throttle before any remote server i/o is made
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self.throttle(wait=wait)
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try:
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r = requests.post(
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url,
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data=dumps(payload),
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headers=headers,
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verify=self.verify_certificate,
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timeout=self.request_timeout,
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)
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# A Good response (200) looks like this:
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# "results": {
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# "total_rejected_recipients": 0,
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# "total_accepted_recipients": 1,
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# "id": "11668787484950529"
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# }
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# }
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#
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# A Bad response looks like this:
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# {
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# "errors": [
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# {
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# "description":
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# "Unconfigured or unverified sending domain.",
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# "code": "7001",
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# "message": "Invalid domain"
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# }
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# ]
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# }
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#
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try:
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# Update our status response if we can
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json_response = loads(r.content)
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except (AttributeError, TypeError, ValueError):
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# ValueError = r.content is Unparsable
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# TypeError = r.content is None
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# AttributeError = r is None
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# We could not parse JSON response.
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# We will just use the status we already have.
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pass
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status_code = r.status_code
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payload['recipients'] = list()
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if status_code == requests.codes.ok:
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self.logger.info(
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'Sent SparkPost notification to {}.'.format(
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verbose_dest))
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return status_code, json_response
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# We had a problem if we get here
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status_str = \
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NotifyBase.http_response_code_lookup(
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status_code, SPARKPOST_API_LOOKUP)
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self.logger.warning(
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'Failed to send SparkPost notification to {}: '
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'{}{}error={}.'.format(
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verbose_dest,
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status_str,
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', ' if status_str else '',
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status_code))
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self.logger.debug(
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'Response Details:\r\n{}'.format(r.content))
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if status_code == requests.codes.too_many_requests and retry:
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retry = retry - 1
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if retry > 0:
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wait = self.sparkpost_retry_wait_sec
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continue
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except requests.RequestException as e:
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self.logger.warning(
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'A Connection error occurred sending SparkPost '
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'notification')
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self.logger.debug('Socket Exception: %s' % str(e))
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# Anything else and we're done
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return status_code, json_response
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# Our code will never reach here (outside of infinite while loop above)
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def send(self, body, title='', notify_type=NotifyType.INFO, attach=None,
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**kwargs):
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"""
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Perform SparkPost Notification
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"""
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if not self.targets:
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# There is no one to email; we're done
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self.logger.warning(
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'There are no Email recipients to notify')
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return False
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# Initialize our has_error flag
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has_error = False
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# Send in batches if identified to do so
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batch_size = 1 if not self.batch else self.default_batch_size
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reply_to = formataddr((self.from_name if self.from_name else False,
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self.from_addr), charset='utf-8')
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payload = {
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"options": {
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# When set to True, an image is included with the email which
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# is used to detect if the user looked at the image or not.
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'open_tracking': False,
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# Track if links were clicked that were found within email
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'click_tracking': False,
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},
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"content": {
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"from": {
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"name": self.from_name
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if self.from_name else self.app_desc,
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"email": self.from_addr,
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},
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# SparkPost does not allow empty subject lines or lines that
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# only contain whitespace; Since Apprise allows an empty title
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# parameter we swap empty title entries with the period
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"subject": title if title.strip() else '.',
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"reply_to": reply_to,
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}
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}
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if self.notify_format == NotifyFormat.HTML:
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payload['content']['html'] = body
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else:
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payload['content']['text'] = body
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if attach:
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# Prepare ourselves an attachment object
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payload['content']['attachments'] = []
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for attachment in attach:
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# Perform some simple error checking
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if not attachment:
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# We could not access the attachment
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|
self.logger.error(
|
|
'Could not access attachment {}.'.format(
|
|
attachment.url(privacy=True)))
|
|
return False
|
|
|
|
self.logger.debug(
|
|
'Preparing SparkPost attachment {}'.format(
|
|
attachment.url(privacy=True)))
|
|
|
|
try:
|
|
with open(attachment.path, 'rb') as fp:
|
|
# Prepare API Upload Payload
|
|
payload['content']['attachments'].append({
|
|
'name': attachment.name,
|
|
'type': attachment.mimetype,
|
|
'data': base64.b64encode(fp.read()).decode("ascii")
|
|
})
|
|
|
|
except (OSError, IOError) as e:
|
|
self.logger.warning(
|
|
'An I/O error occurred while reading {}.'.format(
|
|
attachment.name if attachment else 'attachment'))
|
|
self.logger.debug('I/O Exception: %s' % str(e))
|
|
return False
|
|
|
|
# Take a copy of our token dictionary
|
|
tokens = self.tokens.copy()
|
|
|
|
# Apply some defaults template values
|
|
tokens['app_body'] = body
|
|
tokens['app_title'] = title
|
|
tokens['app_type'] = notify_type
|
|
tokens['app_id'] = self.app_id
|
|
tokens['app_desc'] = self.app_desc
|
|
tokens['app_color'] = self.color(notify_type)
|
|
tokens['app_url'] = self.app_url
|
|
|
|
# Store our tokens if they're identified
|
|
payload['substitution_data'] = self.tokens
|
|
|
|
# Create a copy of the targets list
|
|
emails = list(self.targets)
|
|
|
|
for index in range(0, len(emails), batch_size):
|
|
# Generate our email listing
|
|
payload['recipients'] = list()
|
|
|
|
# Initialize our cc list
|
|
cc = (self.cc - self.bcc)
|
|
|
|
# Initialize our bcc list
|
|
bcc = set(self.bcc)
|
|
|
|
# Initialize our headers
|
|
headers = self.headers.copy()
|
|
|
|
for addr in self.targets[index:index + batch_size]:
|
|
entry = {
|
|
'address': {
|
|
'email': addr[1],
|
|
}
|
|
}
|
|
|
|
# Strip target out of cc list if in To
|
|
cc = (cc - set([addr[1]]))
|
|
|
|
# Strip target out of bcc list if in To
|
|
bcc = (bcc - set([addr[1]]))
|
|
|
|
if addr[0]:
|
|
entry['address']['name'] = addr[0]
|
|
|
|
# Add our recipient to our list
|
|
payload['recipients'].append(entry)
|
|
|
|
if cc:
|
|
# Handle our cc List
|
|
for addr in cc:
|
|
entry = {
|
|
'address': {
|
|
'email': addr,
|
|
'header_to':
|
|
# Take the first email in the To
|
|
self.targets[index:index + batch_size][0][1],
|
|
},
|
|
}
|
|
|
|
if self.names.get(addr):
|
|
entry['address']['name'] = self.names[addr]
|
|
|
|
# Add our recipient to our list
|
|
payload['recipients'].append(entry)
|
|
|
|
headers['CC'] = ','.join(cc)
|
|
|
|
# Handle our bcc
|
|
for addr in bcc:
|
|
# Add our recipient to our list
|
|
payload['recipients'].append({
|
|
'address': {
|
|
'email': addr,
|
|
'header_to':
|
|
# Take the first email in the To
|
|
self.targets[index:index + batch_size][0][1],
|
|
},
|
|
})
|
|
|
|
if headers:
|
|
payload['content']['headers'] = headers
|
|
|
|
# Send our message
|
|
status_code, response = \
|
|
self.__post(payload, self.sparkpost_retry_attempts)
|
|
|
|
# Failed
|
|
if status_code != requests.codes.ok:
|
|
has_error = True
|
|
|
|
return not has_error
|
|
|
|
def url(self, privacy=False, *args, **kwargs):
|
|
"""
|
|
Returns the URL built dynamically based on specified arguments.
|
|
"""
|
|
|
|
# Define any URL parameters
|
|
params = {
|
|
'region': self.region_name,
|
|
'batch': 'yes' if self.batch else 'no',
|
|
}
|
|
|
|
# Append our headers into our parameters
|
|
params.update({'+{}'.format(k): v for k, v in self.headers.items()})
|
|
|
|
# Append our template tokens into our parameters
|
|
params.update({':{}'.format(k): v for k, v in self.tokens.items()})
|
|
|
|
# Extend our parameters
|
|
params.update(self.url_parameters(privacy=privacy, *args, **kwargs))
|
|
|
|
if self.from_name is not None:
|
|
# from_name specified; pass it back on the url
|
|
params['name'] = self.from_name
|
|
|
|
if self.cc:
|
|
# Handle our Carbon Copy Addresses
|
|
params['cc'] = ','.join(
|
|
['{}{}'.format(
|
|
'' if not e not in self.names
|
|
else '{}:'.format(self.names[e]), e) for e in self.cc])
|
|
|
|
if self.bcc:
|
|
# Handle our Blind Carbon Copy Addresses
|
|
params['bcc'] = ','.join(self.bcc)
|
|
|
|
# a simple boolean check as to whether we display our target emails
|
|
# or not
|
|
has_targets = \
|
|
not (len(self.targets) == 1
|
|
and self.targets[0][1] == self.from_addr)
|
|
|
|
return '{schema}://{user}@{host}/{apikey}/{targets}/?{params}'.format(
|
|
schema=self.secure_protocol,
|
|
host=self.host,
|
|
user=NotifySparkPost.quote(self.user, safe=''),
|
|
apikey=self.pprint(self.apikey, privacy, safe=''),
|
|
targets='' if not has_targets else '/'.join(
|
|
[NotifySparkPost.quote('{}{}'.format(
|
|
'' if not e[0] else '{}:'.format(e[0]), e[1]),
|
|
safe='') for e in self.targets]),
|
|
params=NotifySparkPost.urlencode(params))
|
|
|
|
def __len__(self):
|
|
"""
|
|
Returns the number of targets associated with this notification
|
|
"""
|
|
#
|
|
# Factor batch into calculation
|
|
#
|
|
batch_size = 1 if not self.batch else self.default_batch_size
|
|
targets = len(self.targets)
|
|
if batch_size > 1:
|
|
targets = int(targets / batch_size) + \
|
|
(1 if targets % batch_size else 0)
|
|
|
|
return targets if targets > 0 else 1
|
|
|
|
@staticmethod
|
|
def parse_url(url):
|
|
"""
|
|
Parses the URL and returns enough arguments that can allow
|
|
us to re-instantiate this object.
|
|
|
|
"""
|
|
results = NotifyBase.parse_url(url, verify_host=False)
|
|
if not results:
|
|
# We're done early as we couldn't load the results
|
|
return results
|
|
|
|
# Get our entries; split_path() looks after unquoting content for us
|
|
# by default
|
|
results['targets'] = NotifySparkPost.split_path(results['fullpath'])
|
|
|
|
# Our very first entry is reserved for our api key
|
|
try:
|
|
results['apikey'] = results['targets'].pop(0)
|
|
|
|
except IndexError:
|
|
# We're done - no API Key found
|
|
results['apikey'] = None
|
|
|
|
if 'name' in results['qsd'] and len(results['qsd']['name']):
|
|
# Extract from name to associate with from address
|
|
results['from_name'] = \
|
|
NotifySparkPost.unquote(results['qsd']['name'])
|
|
|
|
if 'region' in results['qsd'] and len(results['qsd']['region']):
|
|
# Extract region
|
|
results['region_name'] = \
|
|
NotifySparkPost.unquote(results['qsd']['region'])
|
|
|
|
# Handle 'to' email address
|
|
if 'to' in results['qsd'] and len(results['qsd']['to']):
|
|
results['targets'].append(results['qsd']['to'])
|
|
|
|
# Handle Carbon Copy Addresses
|
|
if 'cc' in results['qsd'] and len(results['qsd']['cc']):
|
|
results['cc'] = results['qsd']['cc']
|
|
|
|
# Handle Blind Carbon Copy Addresses
|
|
if 'bcc' in results['qsd'] and len(results['qsd']['bcc']):
|
|
results['bcc'] = results['qsd']['bcc']
|
|
|
|
# Add our Meta Headers that the user can provide with their outbound
|
|
# emails
|
|
results['headers'] = {NotifyBase.unquote(x): NotifyBase.unquote(y)
|
|
for x, y in results['qsd+'].items()}
|
|
|
|
# Add our template tokens (if defined)
|
|
results['tokens'] = {NotifyBase.unquote(x): NotifyBase.unquote(y)
|
|
for x, y in results['qsd:'].items()}
|
|
|
|
# Get Batch Mode Flag
|
|
results['batch'] = \
|
|
parse_bool(results['qsd'].get(
|
|
'batch', NotifySparkPost.template_args['batch']['default']))
|
|
|
|
return results
|