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"""This module contains AWS S3 operators."""
import subprocess
import sys
from tempfile import NamedTemporaryFile
from typing import TYPE_CHECKING, Dict, List, Optional, Sequence, Union
from airflow.exceptions import AirflowException
from airflow.models import BaseOperator
from airflow.providers.amazon.aws.hooks.s3 import S3Hook
if TYPE_CHECKING:
from airflow.utils.context import Context
[docs]BUCKET_DOES_NOT_EXIST_MSG = "Bucket with name: %s doesn't exist"
[docs]class S3CreateBucketOperator(BaseOperator):
"""
This operator creates an S3 bucket
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:S3CreateBucketOperator`
:param bucket_name: This is bucket name you want to create
:param aws_conn_id: The Airflow connection used for AWS credentials.
If this is None or empty then the default boto3 behaviour is used. If
running Airflow in a distributed manner and aws_conn_id is None or
empty, then default boto3 configuration would be used (and must be
maintained on each worker node).
:param region_name: AWS region_name. If not specified fetched from connection.
"""
[docs] template_fields: Sequence[str] = ("bucket_name",)
def __init__(
self,
*,
bucket_name: str,
aws_conn_id: Optional[str] = "aws_default",
region_name: Optional[str] = None,
**kwargs,
) -> None:
super().__init__(**kwargs)
self.bucket_name = bucket_name
self.region_name = region_name
self.aws_conn_id = aws_conn_id
[docs] def execute(self, context: 'Context'):
s3_hook = S3Hook(aws_conn_id=self.aws_conn_id, region_name=self.region_name)
if not s3_hook.check_for_bucket(self.bucket_name):
s3_hook.create_bucket(bucket_name=self.bucket_name, region_name=self.region_name)
self.log.info("Created bucket with name: %s", self.bucket_name)
else:
self.log.info("Bucket with name: %s already exists", self.bucket_name)
[docs]class S3DeleteBucketOperator(BaseOperator):
"""
This operator deletes an S3 bucket
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:S3DeleteBucketOperator`
:param bucket_name: This is bucket name you want to delete
:param force_delete: Forcibly delete all objects in the bucket before deleting the bucket
:param aws_conn_id: The Airflow connection used for AWS credentials.
If this is None or empty then the default boto3 behaviour is used. If
running Airflow in a distributed manner and aws_conn_id is None or
empty, then default boto3 configuration would be used (and must be
maintained on each worker node).
"""
[docs] template_fields: Sequence[str] = ("bucket_name",)
def __init__(
self,
bucket_name: str,
force_delete: bool = False,
aws_conn_id: Optional[str] = "aws_default",
**kwargs,
) -> None:
super().__init__(**kwargs)
self.bucket_name = bucket_name
self.force_delete = force_delete
self.aws_conn_id = aws_conn_id
[docs] def execute(self, context: 'Context'):
s3_hook = S3Hook(aws_conn_id=self.aws_conn_id)
if s3_hook.check_for_bucket(self.bucket_name):
s3_hook.delete_bucket(bucket_name=self.bucket_name, force_delete=self.force_delete)
self.log.info("Deleted bucket with name: %s", self.bucket_name)
else:
self.log.info("Bucket with name: %s doesn't exist", self.bucket_name)
[docs]class S3GetBucketTaggingOperator(BaseOperator):
"""
This operator gets tagging from an S3 bucket
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:S3GetBucketTaggingOperator`
:param bucket_name: This is bucket name you want to reference
:param aws_conn_id: The Airflow connection used for AWS credentials.
If this is None or empty then the default boto3 behaviour is used. If
running Airflow in a distributed manner and aws_conn_id is None or
empty, then default boto3 configuration would be used (and must be
maintained on each worker node).
"""
[docs] template_fields: Sequence[str] = ("bucket_name",)
def __init__(self, bucket_name: str, aws_conn_id: Optional[str] = "aws_default", **kwargs) -> None:
super().__init__(**kwargs)
self.bucket_name = bucket_name
self.aws_conn_id = aws_conn_id
[docs] def execute(self, context: 'Context'):
s3_hook = S3Hook(aws_conn_id=self.aws_conn_id)
if s3_hook.check_for_bucket(self.bucket_name):
self.log.info("Getting tags for bucket %s", self.bucket_name)
return s3_hook.get_bucket_tagging(self.bucket_name)
else:
self.log.warning(BUCKET_DOES_NOT_EXIST_MSG, self.bucket_name)
return None
[docs]class S3PutBucketTaggingOperator(BaseOperator):
"""
This operator puts tagging for an S3 bucket.
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:S3PutBucketTaggingOperator`
:param bucket_name: The name of the bucket to add tags to.
:param key: The key portion of the key/value pair for a tag to be added.
If a key is provided, a value must be provided as well.
:param value: The value portion of the key/value pair for a tag to be added.
If a value is provided, a key must be provided as well.
:param tag_set: A List of key/value pairs.
:param aws_conn_id: The Airflow connection used for AWS credentials.
If this is None or empty then the default boto3 behaviour is used. If
running Airflow in a distributed manner and aws_conn_id is None or
empty, then the default boto3 configuration would be used (and must be
maintained on each worker node).
"""
[docs] template_fields: Sequence[str] = ("bucket_name",)
[docs] template_fields_renderers = {"tag_set": "json"}
def __init__(
self,
bucket_name: str,
key: Optional[str] = None,
value: Optional[str] = None,
tag_set: Optional[List[Dict[str, str]]] = None,
aws_conn_id: Optional[str] = "aws_default",
**kwargs,
) -> None:
super().__init__(**kwargs)
self.key = key
self.value = value
self.tag_set = tag_set
self.bucket_name = bucket_name
self.aws_conn_id = aws_conn_id
[docs] def execute(self, context: 'Context'):
s3_hook = S3Hook(aws_conn_id=self.aws_conn_id)
if s3_hook.check_for_bucket(self.bucket_name):
self.log.info("Putting tags for bucket %s", self.bucket_name)
return s3_hook.put_bucket_tagging(
key=self.key, value=self.value, tag_set=self.tag_set, bucket_name=self.bucket_name
)
else:
self.log.warning(BUCKET_DOES_NOT_EXIST_MSG, self.bucket_name)
return None
[docs]class S3DeleteBucketTaggingOperator(BaseOperator):
"""
This operator deletes tagging from an S3 bucket.
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:S3DeleteBucketTaggingOperator`
:param bucket_name: This is the name of the bucket to delete tags from.
:param aws_conn_id: The Airflow connection used for AWS credentials.
If this is None or empty then the default boto3 behaviour is used. If
running Airflow in a distributed manner and aws_conn_id is None or
empty, then default boto3 configuration would be used (and must be
maintained on each worker node).
"""
[docs] template_fields: Sequence[str] = ("bucket_name",)
def __init__(self, bucket_name: str, aws_conn_id: Optional[str] = "aws_default", **kwargs) -> None:
super().__init__(**kwargs)
self.bucket_name = bucket_name
self.aws_conn_id = aws_conn_id
[docs] def execute(self, context: 'Context'):
s3_hook = S3Hook(aws_conn_id=self.aws_conn_id)
if s3_hook.check_for_bucket(self.bucket_name):
self.log.info("Deleting tags for bucket %s", self.bucket_name)
return s3_hook.delete_bucket_tagging(self.bucket_name)
else:
self.log.warning(BUCKET_DOES_NOT_EXIST_MSG, self.bucket_name)
return None
[docs]class S3CopyObjectOperator(BaseOperator):
"""
Creates a copy of an object that is already stored in S3.
Note: the S3 connection used here needs to have access to both
source and destination bucket/key.
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:S3CopyObjectOperator`
:param source_bucket_key: The key of the source object. (templated)
It can be either full s3:// style url or relative path from root level.
When it's specified as a full s3:// url, please omit source_bucket_name.
:param dest_bucket_key: The key of the object to copy to. (templated)
The convention to specify `dest_bucket_key` is the same as `source_bucket_key`.
:param source_bucket_name: Name of the S3 bucket where the source object is in. (templated)
It should be omitted when `source_bucket_key` is provided as a full s3:// url.
:param dest_bucket_name: Name of the S3 bucket to where the object is copied. (templated)
It should be omitted when `dest_bucket_key` is provided as a full s3:// url.
:param source_version_id: Version ID of the source object (OPTIONAL)
:param aws_conn_id: Connection id of the S3 connection to use
:param verify: Whether or not to verify SSL certificates for S3 connection.
By default SSL certificates are verified.
You can provide the following values:
- False: do not validate SSL certificates. SSL will still be used,
but SSL certificates will not be
verified.
- path/to/cert/bundle.pem: A filename of the CA cert bundle to uses.
You can specify this argument if you want to use a different
CA cert bundle than the one used by botocore.
:param acl_policy: String specifying the canned ACL policy for the file being
uploaded to the S3 bucket.
"""
[docs] template_fields: Sequence[str] = (
'source_bucket_key',
'dest_bucket_key',
'source_bucket_name',
'dest_bucket_name',
)
def __init__(
self,
*,
source_bucket_key: str,
dest_bucket_key: str,
source_bucket_name: Optional[str] = None,
dest_bucket_name: Optional[str] = None,
source_version_id: Optional[str] = None,
aws_conn_id: str = 'aws_default',
verify: Optional[Union[str, bool]] = None,
acl_policy: Optional[str] = None,
**kwargs,
):
super().__init__(**kwargs)
self.source_bucket_key = source_bucket_key
self.dest_bucket_key = dest_bucket_key
self.source_bucket_name = source_bucket_name
self.dest_bucket_name = dest_bucket_name
self.source_version_id = source_version_id
self.aws_conn_id = aws_conn_id
self.verify = verify
self.acl_policy = acl_policy
[docs] def execute(self, context: 'Context'):
s3_hook = S3Hook(aws_conn_id=self.aws_conn_id, verify=self.verify)
s3_hook.copy_object(
self.source_bucket_key,
self.dest_bucket_key,
self.source_bucket_name,
self.dest_bucket_name,
self.source_version_id,
self.acl_policy,
)
[docs]class S3CreateObjectOperator(BaseOperator):
"""
Creates a new object from `data` as string or bytes.
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:S3CreateObjectOperator`
:param s3_bucket: Name of the S3 bucket where to save the object. (templated)
It should be omitted when `bucket_key` is provided as a full s3:// url.
:param s3_key: The key of the object to be created. (templated)
It can be either full s3:// style url or relative path from root level.
When it's specified as a full s3:// url, please omit bucket_name.
:param data: string or bytes to save as content.
:param replace: If True, it will overwrite the key if it already exists
:param encrypt: If True, the file will be encrypted on the server-side
by S3 and will be stored in an encrypted form while at rest in S3.
:param acl_policy: String specifying the canned ACL policy for the file being
uploaded to the S3 bucket.
:param encoding: The string to byte encoding.
It should be specified only when `data` is provided as string.
:param compression: Type of compression to use, currently only gzip is supported.
It can be specified only when `data` is provided as string.
:param aws_conn_id: Connection id of the S3 connection to use
:param verify: Whether or not to verify SSL certificates for S3 connection.
By default SSL certificates are verified.
You can provide the following values:
- False: do not validate SSL certificates. SSL will still be used,
but SSL certificates will not be
verified.
- path/to/cert/bundle.pem: A filename of the CA cert bundle to uses.
You can specify this argument if you want to use a different
CA cert bundle than the one used by botocore.
"""
[docs] template_fields: Sequence[str] = ('s3_bucket', 's3_key', 'data')
def __init__(
self,
*,
s3_bucket: Optional[str] = None,
s3_key: str,
data: Union[str, bytes],
replace: bool = False,
encrypt: bool = False,
acl_policy: Optional[str] = None,
encoding: Optional[str] = None,
compression: Optional[str] = None,
aws_conn_id: str = 'aws_default',
verify: Optional[Union[str, bool]] = None,
**kwargs,
):
super().__init__(**kwargs)
self.s3_bucket = s3_bucket
self.s3_key = s3_key
self.data = data
self.replace = replace
self.encrypt = encrypt
self.acl_policy = acl_policy
self.encoding = encoding
self.compression = compression
self.aws_conn_id = aws_conn_id
self.verify = verify
[docs] def execute(self, context: 'Context'):
s3_hook = S3Hook(aws_conn_id=self.aws_conn_id, verify=self.verify)
s3_bucket, s3_key = s3_hook.get_s3_bucket_key(self.s3_bucket, self.s3_key, 'dest_bucket', 'dest_key')
if isinstance(self.data, str):
s3_hook.load_string(
self.data,
s3_key,
s3_bucket,
self.replace,
self.encrypt,
self.encoding,
self.acl_policy,
self.compression,
)
else:
s3_hook.load_bytes(self.data, s3_key, s3_bucket, self.replace, self.encrypt, self.acl_policy)
[docs]class S3DeleteObjectsOperator(BaseOperator):
"""
To enable users to delete single object or multiple objects from
a bucket using a single HTTP request.
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:S3DeleteObjectsOperator`
:param bucket: Name of the bucket in which you are going to delete object(s). (templated)
:param keys: The key(s) to delete from S3 bucket. (templated)
When ``keys`` is a string, it's supposed to be the key name of
the single object to delete.
When ``keys`` is a list, it's supposed to be the list of the
keys to delete.
:param prefix: Prefix of objects to delete. (templated)
All objects matching this prefix in the bucket will be deleted.
:param aws_conn_id: Connection id of the S3 connection to use
:param verify: Whether or not to verify SSL certificates for S3 connection.
By default SSL certificates are verified.
You can provide the following values:
- ``False``: do not validate SSL certificates. SSL will still be used,
but SSL certificates will not be
verified.
- ``path/to/cert/bundle.pem``: A filename of the CA cert bundle to uses.
You can specify this argument if you want to use a different
CA cert bundle than the one used by botocore.
"""
[docs] template_fields: Sequence[str] = ('keys', 'bucket', 'prefix')
def __init__(
self,
*,
bucket: str,
keys: Optional[Union[str, list]] = None,
prefix: Optional[str] = None,
aws_conn_id: str = 'aws_default',
verify: Optional[Union[str, bool]] = None,
**kwargs,
):
super().__init__(**kwargs)
self.bucket = bucket
self.keys = keys
self.prefix = prefix
self.aws_conn_id = aws_conn_id
self.verify = verify
if not bool(keys is None) ^ bool(prefix is None):
raise AirflowException("Either keys or prefix should be set.")
[docs] def execute(self, context: 'Context'):
if not bool(self.keys is None) ^ bool(self.prefix is None):
raise AirflowException("Either keys or prefix should be set.")
if isinstance(self.keys, (list, str)) and not bool(self.keys):
return
s3_hook = S3Hook(aws_conn_id=self.aws_conn_id, verify=self.verify)
keys = self.keys or s3_hook.list_keys(bucket_name=self.bucket, prefix=self.prefix)
if keys:
s3_hook.delete_objects(bucket=self.bucket, keys=keys)
[docs]class S3ListOperator(BaseOperator):
"""
List all objects from the bucket with the given string prefix in name.
This operator returns a python list with the name of objects which can be
used by `xcom` in the downstream task.
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:S3ListOperator`
:param bucket: The S3 bucket where to find the objects. (templated)
:param prefix: Prefix string to filters the objects whose name begin with
such prefix. (templated)
:param delimiter: the delimiter marks key hierarchy. (templated)
:param aws_conn_id: The connection ID to use when connecting to S3 storage.
:param verify: Whether or not to verify SSL certificates for S3 connection.
By default SSL certificates are verified.
You can provide the following values:
- ``False``: do not validate SSL certificates. SSL will still be used
(unless use_ssl is False), but SSL certificates will not be
verified.
- ``path/to/cert/bundle.pem``: A filename of the CA cert bundle to uses.
You can specify this argument if you want to use a different
CA cert bundle than the one used by botocore.
**Example**:
The following operator would list all the files
(excluding subfolders) from the S3
``customers/2018/04/`` key in the ``data`` bucket. ::
s3_file = S3ListOperator(
task_id='list_3s_files',
bucket='data',
prefix='customers/2018/04/',
delimiter='/',
aws_conn_id='aws_customers_conn'
)
"""
[docs] template_fields: Sequence[str] = ('bucket', 'prefix', 'delimiter')
def __init__(
self,
*,
bucket: str,
prefix: str = '',
delimiter: str = '',
aws_conn_id: str = 'aws_default',
verify: Optional[Union[str, bool]] = None,
**kwargs,
):
super().__init__(**kwargs)
self.bucket = bucket
self.prefix = prefix
self.delimiter = delimiter
self.aws_conn_id = aws_conn_id
self.verify = verify
[docs] def execute(self, context: 'Context'):
hook = S3Hook(aws_conn_id=self.aws_conn_id, verify=self.verify)
self.log.info(
'Getting the list of files from bucket: %s in prefix: %s (Delimiter %s)',
self.bucket,
self.prefix,
self.delimiter,
)
return hook.list_keys(bucket_name=self.bucket, prefix=self.prefix, delimiter=self.delimiter)
[docs]class S3ListPrefixesOperator(BaseOperator):
"""
List all subfolders from the bucket with the given string prefix in name.
This operator returns a python list with the name of all subfolders which
can be used by `xcom` in the downstream task.
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:S3ListPrefixesOperator`
:param bucket: The S3 bucket where to find the subfolders. (templated)
:param prefix: Prefix string to filter the subfolders whose name begin with
such prefix. (templated)
:param delimiter: the delimiter marks subfolder hierarchy. (templated)
:param aws_conn_id: The connection ID to use when connecting to S3 storage.
:param verify: Whether or not to verify SSL certificates for S3 connection.
By default SSL certificates are verified.
You can provide the following values:
- ``False``: do not validate SSL certificates. SSL will still be used
(unless use_ssl is False), but SSL certificates will not be
verified.
- ``path/to/cert/bundle.pem``: A filename of the CA cert bundle to uses.
You can specify this argument if you want to use a different
CA cert bundle than the one used by botocore.
**Example**:
The following operator would list all the subfolders
from the S3 ``customers/2018/04/`` prefix in the ``data`` bucket. ::
s3_file = S3ListPrefixesOperator(
task_id='list_s3_prefixes',
bucket='data',
prefix='customers/2018/04/',
delimiter='/',
aws_conn_id='aws_customers_conn'
)
"""
[docs] template_fields: Sequence[str] = ('bucket', 'prefix', 'delimiter')
def __init__(
self,
*,
bucket: str,
prefix: str,
delimiter: str,
aws_conn_id: str = 'aws_default',
verify: Optional[Union[str, bool]] = None,
**kwargs,
):
super().__init__(**kwargs)
self.bucket = bucket
self.prefix = prefix
self.delimiter = delimiter
self.aws_conn_id = aws_conn_id
self.verify = verify
[docs] def execute(self, context: 'Context'):
hook = S3Hook(aws_conn_id=self.aws_conn_id, verify=self.verify)
self.log.info(
'Getting the list of subfolders from bucket: %s in prefix: %s (Delimiter %s)',
self.bucket,
self.prefix,
self.delimiter,
)
return hook.list_prefixes(bucket_name=self.bucket, prefix=self.prefix, delimiter=self.delimiter)
