279 lines
8.5 KiB
Python
279 lines
8.5 KiB
Python
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"""AWS platform for notify component."""
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import asyncio
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import logging
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import json
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import base64
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import voluptuous as vol
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import homeassistant.helpers.config_validation as cv
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from homeassistant.const import CONF_PLATFORM, CONF_NAME, ATTR_CREDENTIALS
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from homeassistant.components.notify import (
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ATTR_TARGET,
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ATTR_TITLE,
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ATTR_TITLE_DEFAULT,
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BaseNotificationService,
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PLATFORM_SCHEMA,
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)
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from homeassistant.exceptions import HomeAssistantError
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from homeassistant.helpers.json import JSONEncoder
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from .const import (
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CONF_ACCESS_KEY_ID,
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CONF_CREDENTIAL_NAME,
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CONF_PROFILE_NAME,
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CONF_REGION,
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CONF_SECRET_ACCESS_KEY,
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DATA_SESSIONS,
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)
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DEPENDENCIES = ["aws"]
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_LOGGER = logging.getLogger(__name__)
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CONF_CONTEXT = "context"
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CONF_SERVICE = "service"
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SUPPORTED_SERVICES = ["lambda", "sns", "sqs"]
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def _in_avilable_region(config):
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"""Check if region is available."""
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import aiobotocore
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session = aiobotocore.get_session()
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available_regions = session.get_available_regions(config[CONF_SERVICE])
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if config[CONF_REGION] not in available_regions:
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raise vol.Invalid(
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"Region {} is not available for {} service, mustin {}".format(
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config[CONF_REGION], config[CONF_SERVICE], available_regions
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)
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)
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return config
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PLATFORM_SCHEMA = vol.Schema(
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vol.All(
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PLATFORM_SCHEMA.extend(
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{
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# override notify.PLATFORM_SCHEMA.CONF_PLATFORM to Optional
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# we don't need this field when we use discovery
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vol.Optional(CONF_PLATFORM): cv.string,
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vol.Required(CONF_SERVICE): vol.All(
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cv.string, vol.Lower, vol.In(SUPPORTED_SERVICES)
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),
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vol.Required(CONF_REGION): vol.All(cv.string, vol.Lower),
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vol.Inclusive(CONF_ACCESS_KEY_ID, ATTR_CREDENTIALS): cv.string,
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vol.Inclusive(
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CONF_SECRET_ACCESS_KEY, ATTR_CREDENTIALS
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): cv.string,
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vol.Exclusive(CONF_PROFILE_NAME, ATTR_CREDENTIALS): cv.string,
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vol.Exclusive(
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CONF_CREDENTIAL_NAME, ATTR_CREDENTIALS
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): cv.string,
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vol.Optional(CONF_CONTEXT): vol.Coerce(dict),
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},
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extra=vol.PREVENT_EXTRA,
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),
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_in_avilable_region,
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)
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)
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async def async_get_service(hass, config, discovery_info=None):
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"""Get the AWS notification service."""
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import aiobotocore
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session = None
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if discovery_info is not None:
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conf = discovery_info
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else:
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conf = config
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service = conf[CONF_SERVICE]
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region_name = conf[CONF_REGION]
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aws_config = conf.copy()
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del aws_config[CONF_SERVICE]
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del aws_config[CONF_REGION]
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if CONF_PLATFORM in aws_config:
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del aws_config[CONF_PLATFORM]
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if CONF_NAME in aws_config:
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del aws_config[CONF_NAME]
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if CONF_CONTEXT in aws_config:
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del aws_config[CONF_CONTEXT]
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if not aws_config:
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# no platform config, use aws component config instead
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if hass.data[DATA_SESSIONS]:
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session = list(hass.data[DATA_SESSIONS].values())[0]
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else:
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raise ValueError(
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"No available aws session for {}".format(config[CONF_NAME])
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)
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if session is None:
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credential_name = aws_config.get(CONF_CREDENTIAL_NAME)
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if credential_name is not None:
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session = hass.data[DATA_SESSIONS].get(credential_name)
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if session is None:
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_LOGGER.warning(
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"No available aws session for %s", credential_name
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)
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del aws_config[CONF_CREDENTIAL_NAME]
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if session is None:
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profile = aws_config.get(CONF_PROFILE_NAME)
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if profile is not None:
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session = aiobotocore.AioSession(profile=profile, loop=hass.loop)
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del aws_config[CONF_PROFILE_NAME]
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else:
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session = aiobotocore.AioSession(loop=hass.loop)
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aws_config[CONF_REGION] = region_name
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if service == "lambda":
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context_str = json.dumps(
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{"custom": conf.get(CONF_CONTEXT, {})}, cls=JSONEncoder
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)
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context_b64 = base64.b64encode(context_str.encode("utf-8"))
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context = context_b64.decode("utf-8")
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return AWSLambda(session, aws_config, context)
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if service == "sns":
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return AWSSNS(session, aws_config)
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if service == "sqs":
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return AWSSQS(session, aws_config)
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raise ValueError("Unsupported service {}".format(service))
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class AWSNotify(BaseNotificationService):
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"""Implement the notification service for the AWS service."""
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def __init__(self, session, aws_config):
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"""Initialize the service."""
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self.session = session
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self.aws_config = aws_config
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def send_message(self, message, **kwargs):
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"""Send notification."""
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raise NotImplementedError("Please call async_send_message()")
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async def async_send_message(self, message="", **kwargs):
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"""Send notification."""
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targets = kwargs.get(ATTR_TARGET)
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if not targets:
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raise HomeAssistantError("At least one target is required")
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class AWSLambda(AWSNotify):
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"""Implement the notification service for the AWS Lambda service."""
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service = "lambda"
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def __init__(self, session, aws_config, context):
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"""Initialize the service."""
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super().__init__(session, aws_config)
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self.context = context
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async def async_send_message(self, message="", **kwargs):
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"""Send notification to specified LAMBDA ARN."""
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await super().async_send_message(message, **kwargs)
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cleaned_kwargs = dict((k, v) for k, v in kwargs.items() if v)
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payload = {"message": message}
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payload.update(cleaned_kwargs)
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json_payload = json.dumps(payload)
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async with self.session.create_client(
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self.service, **self.aws_config
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) as client:
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tasks = []
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for target in kwargs.get(ATTR_TARGET, []):
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tasks.append(
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client.invoke(
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FunctionName=target,
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Payload=json_payload,
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ClientContext=self.context,
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)
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)
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if tasks:
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await asyncio.gather(*tasks)
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class AWSSNS(AWSNotify):
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"""Implement the notification service for the AWS SNS service."""
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service = "sns"
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async def async_send_message(self, message="", **kwargs):
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"""Send notification to specified SNS ARN."""
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await super().async_send_message(message, **kwargs)
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message_attributes = {
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k: {"StringValue": json.dumps(v), "DataType": "String"}
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for k, v in kwargs.items()
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if v
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}
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subject = kwargs.get(ATTR_TITLE, ATTR_TITLE_DEFAULT)
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async with self.session.create_client(
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self.service, **self.aws_config
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) as client:
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tasks = []
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for target in kwargs.get(ATTR_TARGET, []):
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tasks.append(
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client.publish(
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TargetArn=target,
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Message=message,
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Subject=subject,
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MessageAttributes=message_attributes,
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)
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)
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if tasks:
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await asyncio.gather(*tasks)
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class AWSSQS(AWSNotify):
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"""Implement the notification service for the AWS SQS service."""
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service = "sqs"
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async def async_send_message(self, message="", **kwargs):
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"""Send notification to specified SQS ARN."""
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await super().async_send_message(message, **kwargs)
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cleaned_kwargs = dict((k, v) for k, v in kwargs.items() if v)
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message_body = {"message": message}
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message_body.update(cleaned_kwargs)
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json_body = json.dumps(message_body)
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message_attributes = {}
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for key, val in cleaned_kwargs.items():
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message_attributes[key] = {
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"StringValue": json.dumps(val),
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"DataType": "String",
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}
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async with self.session.create_client(
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self.service, **self.aws_config
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) as client:
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tasks = []
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for target in kwargs.get(ATTR_TARGET, []):
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tasks.append(
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client.send_message(
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QueueUrl=target,
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MessageBody=json_body,
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MessageAttributes=message_attributes,
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)
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)
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if tasks:
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await asyncio.gather(*tasks)
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