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bazarr/libs/apprise/plugins/NotifySparkPost.py

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2020 Chris Caron <lead2gold@gmail.com>
# All rights reserved.
#
# This code is licensed under the MIT License.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files(the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions :
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# Signup @ https://www.sparkpost.com
#
# Ensure you've added a Senders Domain and have generated yourself an
# API Key at:
# https://app.sparkpost.com/dashboard
# Note: For SMTP Access, your API key must have at least been granted the
# 'Send via SMTP' privileges.
# From here you can click on the domain you're interested in. You can acquire
# the API Key from here which will look something like:
# 1e1d479fcf1a87527e9411e083c700689fa1acdc
#
# Knowing this, you can buid your sparkpost url as follows:
# sparkpost://{user}@{domain}/{apikey}
# sparkpost://{user}@{domain}/{apikey}/{email}
#
# You can email as many addresses as you want as:
# sparkpost://{user}@{domain}/{apikey}/{email1}/{email2}/{emailN}
#
# The {user}@{domain} effectively assembles the 'from' email address
# the email will be transmitted from. If no email address is specified
# then it will also become the 'to' address as well.
#
# The {domain} must cross reference a domain you've set up with Spark Post
#
# API Documentation: https://developers.sparkpost.com/api/
# Specifically: https://developers.sparkpost.com/api/transmissions/
import requests
import base64
from json import loads
from json import dumps
from .NotifyBase import NotifyBase
from ..common import NotifyType
from ..common import NotifyFormat
from ..utils import is_email
from email.utils import formataddr
from ..utils import validate_regex
from ..utils import parse_emails
from ..utils import parse_bool
from ..AppriseLocale import gettext_lazy as _
# Provide some known codes SparkPost uses and what they translate to:
# Based on https://www.sparkpost.com/docs/tech-resources/extended-error-codes/
SPARKPOST_HTTP_ERROR_MAP = {
400: 'A bad request was made to the server',
401: 'Invalid User ID and/or Unauthorized User',
403: 'Permission Denied; the provided API Key was not valid',
404: 'There is a problem with the server query URI.',
405: 'Invalid HTTP method',
420: 'Sending limit reached.',
422: 'Invalid data/format/type/length',
429: 'To many requests per sec; rate limit',
}
# Priorities
class SparkPostRegion(object):
US = 'us'
EU = 'eu'
# SparkPost APIs
SPARKPOST_API_LOOKUP = {
SparkPostRegion.US: 'https://api.sparkpost.com/api/v1',
SparkPostRegion.EU: 'https://api.eu.sparkpost.com/api/v1',
}
# A List of our regions we can use for verification
SPARKPOST_REGIONS = (
SparkPostRegion.US,
SparkPostRegion.EU,
)
class NotifySparkPost(NotifyBase):
"""
A wrapper for SparkPost Notifications
"""
# The default descriptive name associated with the Notification
service_name = 'SparkPost'
# The services URL
service_url = 'https://sparkpost.com/'
# All notification requests are secure
secure_protocol = 'sparkpost'
# SparkPost advertises they allow 300 requests per minute.
# 60/300 = 0.2
request_rate_per_sec = 0.20
# Words straight from their website:
# https://developers.sparkpost.com/api/#header-rate-limiting
# These limits are dynamic, but as a general rule, wait 1 to 5 seconds
# after receiving a 429 response before requesting again.
# As a simple work around, this is what we will do... Wait X seconds
# (defined below) before trying again when we get a 429 error
sparkpost_retry_wait_sec = 5
# The maximum number of times we'll retry to send our message when we've
# reached a throttling situatin before giving up
sparkpost_retry_attempts = 3
# The maximum amount of emails that can reside within a single
# batch transfer based on:
# https://www.sparkpost.com/docs/tech-resources/\
# smtp-rest-api-performance/#sending-via-the-transmission-rest-api
default_batch_size = 2000
# A URL that takes you to the setup/help of the specific protocol
setup_url = 'https://github.com/caronc/apprise/wiki/Notify_sparkpost'
# Default Notify Format
notify_format = NotifyFormat.HTML
# The default region to use if one isn't otherwise specified
sparkpost_default_region = SparkPostRegion.US
# Define object templates
templates = (
'{schema}://{user}@{host}:{apikey}/',
'{schema}://{user}@{host}:{apikey}/{targets}',
)
# Define our template tokens
template_tokens = dict(NotifyBase.template_tokens, **{
'user': {
'name': _('User Name'),
'type': 'string',
'required': True,
},
'host': {
'name': _('Domain'),
'type': 'string',
'required': True,
},
'apikey': {
'name': _('API Key'),
'type': 'string',
'private': True,
'required': True,
},
'targets': {
'name': _('Target Emails'),
'type': 'list:string',
},
})
# Define our template arguments
template_args = dict(NotifyBase.template_args, **{
'name': {
'name': _('From Name'),
'type': 'string',
'map_to': 'from_name',
},
'region': {
'name': _('Region Name'),
'type': 'choice:string',
'values': SPARKPOST_REGIONS,
'default': SparkPostRegion.US,
'map_to': 'region_name',
},
'to': {
'alias_of': 'targets',
},
'cc': {
'name': _('Carbon Copy'),
'type': 'list:string',
},
'bcc': {
'name': _('Blind Carbon Copy'),
'type': 'list:string',
},
'batch': {
'name': _('Batch Mode'),
'type': 'bool',
'default': False,
},
})
# Define any kwargs we're using
template_kwargs = {
'headers': {
'name': _('Email Header'),
'prefix': '+',
},
'tokens': {
'name': _('Template Tokens'),
'prefix': ':',
},
}
def __init__(self, apikey, targets, cc=None, bcc=None, from_name=None,
region_name=None, headers=None, tokens=None, batch=False,
**kwargs):
"""
Initialize SparkPost Object
"""
super(NotifySparkPost, self).__init__(**kwargs)
# API Key (associated with project)
self.apikey = validate_regex(apikey)
if not self.apikey:
msg = 'An invalid SparkPost API Key ' \
'({}) was specified.'.format(apikey)
self.logger.warning(msg)
raise TypeError(msg)
# Validate our username
if not self.user:
msg = 'No SparkPost username was specified.'
self.logger.warning(msg)
raise TypeError(msg)
# Acquire Email 'To'
self.targets = list()
# Acquire Carbon Copies
self.cc = set()
# Acquire Blind Carbon Copies
self.bcc = set()
# For tracking our email -> name lookups
self.names = {}
# Store our region
try:
self.region_name = self.sparkpost_default_region \
if region_name is None else region_name.lower()
if self.region_name not in SPARKPOST_REGIONS:
# allow the outer except to handle this common response
raise
except:
# Invalid region specified
msg = 'The SparkPost region specified ({}) is invalid.' \
.format(region_name)
self.logger.warning(msg)
raise TypeError(msg)
# Get our From username (if specified)
self.from_name = from_name
# Get our from email address
self.from_addr = '{user}@{host}'.format(user=self.user, host=self.host)
if not is_email(self.from_addr):
# Parse Source domain based on from_addr
msg = 'Invalid ~From~ email format: {}'.format(self.from_addr)
self.logger.warning(msg)
raise TypeError(msg)
self.headers = {}
if headers:
# Store our extra headers
self.headers.update(headers)
self.tokens = {}
if tokens:
# Store our template tokens
self.tokens.update(tokens)
# Prepare Batch Mode Flag
self.batch = batch
if targets:
# Validate recipients (to:) and drop bad ones:
for recipient in parse_emails(targets):
result = is_email(recipient)
if result:
self.targets.append(
(result['name'] if result['name'] else False,
result['full_email']))
continue
self.logger.warning(
'Dropped invalid To email '
'({}) specified.'.format(recipient),
)
else:
# If our target email list is empty we want to add ourselves to it
self.targets.append(
(self.from_name if self.from_name else False, self.from_addr))
# Validate recipients (cc:) and drop bad ones:
for recipient in parse_emails(cc):
email = is_email(recipient)
if email:
self.cc.add(email['full_email'])
# Index our name (if one exists)
self.names[email['full_email']] = \
email['name'] if email['name'] else False
continue
self.logger.warning(
'Dropped invalid Carbon Copy email '
'({}) specified.'.format(recipient),
)
# Validate recipients (bcc:) and drop bad ones:
for recipient in parse_emails(bcc):
email = is_email(recipient)
if email:
self.bcc.add(email['full_email'])
# Index our name (if one exists)
self.names[email['full_email']] = \
email['name'] if email['name'] else False
continue
self.logger.warning(
'Dropped invalid Blind Carbon Copy email '
'({}) specified.'.format(recipient),
)
def __post(self, payload, retry):
"""
Performs the actual post and returns the response
"""
# Prepare our headers
headers = {
'User-Agent': self.app_id,
'Accept': 'application/json',
'Content-Type': 'application/json',
'Authorization': self.apikey,
}
# Prepare our URL as it's based on our hostname
url = '{}/transmissions/'.format(
SPARKPOST_API_LOOKUP[self.region_name])
# Some Debug Logging
self.logger.debug('SparkPost POST URL: {} (cert_verify={})'.format(
url, self.verify_certificate))
if 'attachments' in payload['content']:
# Since we print our payload; attachments make it a bit too noisy
# we just strip out the data block to accomodate it
log_payload = \
{k: v for k, v in payload.items() if k != "content"}
log_payload['content'] = \
{k: v for k, v in payload['content'].items()
if k != "attachments"}
log_payload['content']['attachments'] = \
[{k: v for k, v in x.items() if k != "data"}
for x in payload['content']['attachments']]
else:
# No tidying is needed
log_payload = payload
self.logger.debug('SparkPost Payload: {}' .format(log_payload))
wait = None
# For logging output of success and errors; we get a head count
# of our outbound details:
verbose_dest = ', '.join(
[x['address']['email'] for x in payload['recipients']]) \
if len(payload['recipients']) <= 3 \
else '{} recipients'.format(len(payload['recipients']))
# Initialize our response object
json_response = {}
# Set ourselves a status code
status_code = -1
while 1: # pragma: no branch
# Always call throttle before any remote server i/o is made
self.throttle(wait=wait)
try:
r = requests.post(
url,
data=dumps(payload),
headers=headers,
verify=self.verify_certificate,
timeout=self.request_timeout,
)
# A Good response (200) looks like this:
# "results": {
# "total_rejected_recipients": 0,
# "total_accepted_recipients": 1,
# "id": "11668787484950529"
# }
# }
#
# A Bad response looks like this:
# {
# "errors": [
# {
# "description":
# "Unconfigured or unverified sending domain.",
# "code": "7001",
# "message": "Invalid domain"
# }
# ]
# }
#
try:
# Update our status response if we can
json_response = loads(r.content)
except (AttributeError, TypeError, ValueError):
# ValueError = r.content is Unparsable
# TypeError = r.content is None
# AttributeError = r is None
# We could not parse JSON response.
# We will just use the status we already have.
pass
status_code = r.status_code
payload['recipients'] = list()
if status_code == requests.codes.ok:
self.logger.info(
'Sent SparkPost notification to {}.'.format(
verbose_dest))
return status_code, json_response
# We had a problem if we get here
status_str = \
NotifyBase.http_response_code_lookup(
status_code, SPARKPOST_API_LOOKUP)
self.logger.warning(
'Failed to send SparkPost notification to {}: '
'{}{}error={}.'.format(
verbose_dest,
status_str,
', ' if status_str else '',
status_code))
self.logger.debug(
'Response Details:\r\n{}'.format(r.content))
if status_code == requests.codes.too_many_requests and retry:
retry = retry - 1
if retry > 0:
wait = self.sparkpost_retry_wait_sec
continue
except requests.RequestException as e:
self.logger.warning(
'A Connection error occurred sending SparkPost '
'notification')
self.logger.debug('Socket Exception: %s' % str(e))
# Anything else and we're done
return status_code, json_response
# Our code will never reach here (outside of infinite while loop above)
def send(self, body, title='', notify_type=NotifyType.INFO, attach=None,
**kwargs):
"""
Perform SparkPost Notification
"""
if not self.targets:
# There is no one to email; we're done
self.logger.warning(
'There are no Email recipients to notify')
return False
# Initialize our has_error flag
has_error = False
# Send in batches if identified to do so
batch_size = 1 if not self.batch else self.default_batch_size
try:
reply_to = formataddr((self.from_name if self.from_name else False,
self.from_addr), charset='utf-8')
except TypeError:
# Python v2.x Support (no charset keyword)
# Format our cc addresses to support the Name field
reply_to = formataddr((self.from_name if self.from_name else False,
self.from_addr))
payload = {
"options": {
# When set to True, an image is included with the email which
# is used to detect if the user looked at the image or not.
'open_tracking': False,
# Track if links were clicked that were found within email
'click_tracking': False,
},
"content": {
"from": {
"name": self.from_name
if self.from_name else self.app_desc,
"email": self.from_addr,
},
# SparkPost does not allow empty subject lines or lines that
# only contain whitespace; Since Apprise allows an empty title
# parameter we swap empty title entries with the period
"subject": title if title.strip() else '.',
"reply_to": reply_to,
}
}
if self.notify_format == NotifyFormat.HTML:
payload['content']['html'] = body
else:
payload['content']['text'] = body
if attach:
# Prepare ourselves an attachment object
payload['content']['attachments'] = []
for attachment in attach:
# Perform some simple error checking
if not attachment:
# We could not access the attachment
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))
@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 from name to associate with from address
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
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