A replication configuration must have at least one rule and can contain a maximum of 1, rules. The priority indicates which rule has precedence whenever two or more replication rules conflict. Amazon S3 will attempt to replicate objects according to all replication rules.
However, if there are two or more rules with the same destination bucket, then objects will be replicated according to the rule with the highest priority. The higher the number, the higher the priority. An object key name prefix that identifies the object or objects to which the rule applies. The maximum prefix length is 1, characters. To include all objects in a bucket, specify an empty string.
A filter that identifies the subset of objects to which the replication rule applies. A Filter must specify exactly one Prefix , Tag , or an And child element. A container for specifying rule filters. The filters determine the subset of objects to which the rule applies.
This element is required only if you specify more than one filter. A container that describes additional filters for identifying the source objects that you want to replicate. You can choose to enable or disable the replication of these objects. If you include SourceSelectionCriteria in the replication configuration, this element is required.
A filter that you can specify for selections for modifications on replicas. Amazon S3 doesn't replicate replica modifications by default. In the latest version of replication configuration when Filter is specified , you can specify this element and set the status to Enabled to replicate modifications on replicas. If you don't specify the Filter element, Amazon S3 assumes that the replication configuration is the earlier version, V1.
In the earlier version, this element is not allowed. Destination bucket owner account ID. In a cross-account scenario, if you direct Amazon S3 to change replica ownership to the Amazon Web Services account that owns the destination bucket by specifying the AccessControlTranslation property, this is the account ID of the destination bucket owner.
The storage class to use when replicating objects, such as S3 Standard or reduced redundancy. By default, Amazon S3 uses the storage class of the source object to create the object replica. Specify this only in a cross-account scenario where source and destination bucket owners are not the same , and you want to change replica ownership to the Amazon Web Services account that owns the destination bucket.
If this is not specified in the replication configuration, the replicas are owned by same Amazon Web Services account that owns the source object. Specifies the replica ownership. A container that provides information about encryption. If SourceSelectionCriteria is specified, you must specify this element.
Amazon S3 uses this key to encrypt replica objects. Amazon S3 only supports symmetric, customer managed KMS keys. Must be specified together with a Metrics block. A container specifying the time by which replication should be complete for all objects and operations on objects. A container specifying replication metrics-related settings enabling replication metrics and events. A container specifying the time threshold for emitting the s3:Replication:OperationMissedThreshold event.
Specifies whether Amazon S3 replicates delete markers. If you specify a Filter in your replication configuration, you must also include a DeleteMarkerReplication element. If your Filter includes a Tag element, the DeleteMarkerReplication Status must be set to Disabled, because Amazon S3 does not support replicating delete markers for tag-based rules. For an example configuration, see Basic Rule Configuration. For more information about delete marker replication, see Basic Rule Configuration.
If you are using an earlier version of the replication configuration, Amazon S3 handles replication of delete markers differently. For more information, see Backward Compatibility. Returns the request payment configuration of a bucket. To use this version of the operation, you must be the bucket owner. For more information, see Requester Pays Buckets. The following operations are related to GetBucketRequestPayment :.
To use this operation, you must have permission to perform the s3:GetBucketTagging action. The following operations are related to GetBucketTagging :. This implementation also returns the MFA Delete status of the versioning state. If the MFA Delete status is enabled , the bucket owner must use an authentication device to change the versioning state of the bucket.
The following operations are related to GetBucketVersioning :. Specifies whether MFA delete is enabled in the bucket versioning configuration.
This element is only returned if the bucket has been configured with MFA delete. If the bucket has never been so configured, this element is not returned. Returns the website configuration for a bucket. To host website on Amazon S3, you can configure a bucket as website by adding a website configuration. By default, only the bucket owner can read the bucket website configuration. However, bucket owners can allow other users to read the website configuration by writing a bucket policy granting them the S3:GetBucketWebsite permission.
Protocol to use when redirecting requests. The default is the protocol that is used in the original request. The name of the index document for the website for example index. A suffix that is appended to a request that is for a directory on the website endpoint for example,if the suffix is index. Specifies the redirect behavior and when a redirect is applied. For more information about routing rules, see Configuring advanced conditional redirects in the Amazon S3 User Guide.
A container for describing a condition that must be met for the specified redirect to apply. For example, 1. If request results in HTTP error 4xx, redirect request to another host where you might process the error. The HTTP error code when the redirect is applied. In the event of an error, if the error code equals this value, then the specified redirect is applied. Required when parent element Condition is specified and sibling KeyPrefixEquals is not specified.
If both are specified, then both must be true for the redirect to be applied. The object key name prefix when the redirect is applied. For example, to redirect requests for ExamplePage.
If both conditions are specified, both must be true for the redirect to be applied. Container for redirect information. You can redirect requests to another host, to another page, or with another protocol. In the event of an error, you can specify a different error code to return.
The object key prefix to use in the redirect request. Not required if one of the siblings is present. Can be present only if ReplaceKeyWith is not provided. The specific object key to use in the redirect request. For example, redirect request to error. Can be present only if ReplaceKeyPrefixWith is not provided.
Retrieves objects from Amazon S3. If you grant READ access to the anonymous user, you can return the object without using an authorization header. An Amazon S3 bucket has no directory hierarchy such as you would find in a typical computer file system.
You can, however, create a logical hierarchy by using object key names that imply a folder structure. For example, instead of naming an object sample. To get an object from such a logical hierarchy, specify the full key name for the object in the GET operation. To distribute large files to many people, you can save bandwidth costs by using BitTorrent. For more information, see Amazon S3 Torrent. Otherwise, this action returns an InvalidObjectStateError error.
For information about restoring archived objects, see Restoring Archived Objects. If you encrypt an object by using server-side encryption with customer-provided encryption keys SSE-C when you store the object in Amazon S3, then when you GET the object, you must use the following headers:.
Assuming you have the relevant permission to read object tags, the response also returns the x-amz-tagging-count header that provides the count of number of tags associated with the object. You can use GetObjectTagging to retrieve the tag set associated with an object. You need the relevant read object or version permission for this operation. For more information, see Specifying Permissions in a Policy.
If the object you request does not exist, the error Amazon S3 returns depends on whether you also have the s3:ListBucket permission. By default, the GET action returns the current version of an object. To return a different version, use the versionId subresource.
For more information about versioning, see PutBucketVersioning. There are times when you want to override certain response header values in a GET response. You can override values for a set of response headers using the following query parameters.
These response header values are sent only on a successful request, that is, when status code OK is returned.
The set of headers you can override using these parameters is a subset of the headers that Amazon S3 accepts when you create an object. To override these header values in the GET response, you use the following request parameters. You must sign the request, either using an Authorization header or a presigned URL, when using these parameters. They cannot be used with an unsigned anonymous request.
If both of the If-Match and If-Unmodified-Since headers are present in the request as follows: If-Match condition evaluates to true , and; If-Unmodified-Since condition evaluates to false ; then, S3 returns OK and the data requested. For more information about conditional requests, see RFC The following operations are related to GetObject :. Downloads the specified range bytes of an object. Amazon S3 doesn't support retrieving multiple ranges of data per GET request.
Body StreamingBody Specifies whether the object retrieved was true or was not false a Delete Marker. If false, this response header does not appear in the response.
If the object expiration is configured see PUT Bucket lifecycle , the response includes this header. It includes the expiry-date and rule-id key-value pairs providing object expiration information.
The value of the rule-id is URL encoded. Provides information about object restoration action and expiration time of the restored object copy. An ETag is an opaque identifier assigned by a web server to a specific version of a resource found at a URL. This is set to the number of metadata entries not returned in x-amz-meta headers. Specifies what content encodings have been applied to the object and thus what decoding mechanisms must be applied to obtain the media-type referenced by the Content-Type header field.
If the bucket is configured as a website, redirects requests for this object to another object in the same bucket or to an external URL. Amazon S3 stores the value of this header in the object metadata.
Provides storage class information of the object. Amazon S3 returns this header for all objects except for S3 Standard storage class objects. Amazon S3 can return this if your request involves a bucket that is either a source or destination in a replication rule. Indicates whether this object has an active legal hold. This field is only returned if you have permission to view an object's legal hold status. The following example retrieves an object for an S3 bucket.
The request specifies the range header to retrieve a specific byte range. Returns the access control list ACL of an object. To return ACL information about a different version, use the versionId subresource.
If your bucket uses the bucket owner enforced setting for S3 Object Ownership, requests to read ACLs are still supported and return the bucket-owner-full-control ACL with the owner being the account that created the bucket. The following operations are related to GetObjectAcl :. Gets an object's current Legal Hold status.
For more information, see Locking Objects. Gets the Object Lock configuration for a bucket. The rule specified in the Object Lock configuration will be applied by default to every new object placed in the specified bucket.
Indicates whether this bucket has an Object Lock configuration enabled. Specifies the Object Lock rule for the specified object. Enable the this rule when you apply ObjectLockConfiguration to a bucket. Bucket settings require both a mode and a period. The period can be either Days or Years but you must select one. You cannot specify Days and Years at the same time. The default Object Lock retention mode and period that you want to apply to new objects placed in the specified bucket.
The default Object Lock retention mode you want to apply to new objects placed in the specified bucket. Must be used with either Days or Years.
The number of days that you want to specify for the default retention period. Must be used with Mode. The number of years that you want to specify for the default retention period. Retrieves an object's retention settings. Returns the tag-set of an object. You send the GET request against the tagging subresource associated with the object. To use this operation, you must have permission to perform the s3:GetObjectTagging action.
By default, the GET action returns information about current version of an object. For a versioned bucket, you can have multiple versions of an object in your bucket. To retrieve tags of any other version, use the versionId query parameter. You also need permission for the s3:GetObjectVersionTagging action. For information about the Amazon S3 object tagging feature, see Object Tagging.
The following action is related to GetObjectTagging :. Returns torrent files from a bucket. BitTorrent can save you bandwidth when you're distributing large files. You can get torrent only for objects that are less than 5 GB in size, and that are not encrypted using server-side encryption with a customer-provided encryption key.
The following action is related to GetObjectTorrent :. When Amazon S3 evaluates the PublicAccessBlock configuration for a bucket or an object, it checks the PublicAccessBlock configuration for both the bucket or the bucket that contains the object and the bucket owner's account.
If the PublicAccessBlock settings are different between the bucket and the account, Amazon S3 uses the most restrictive combination of the bucket-level and account-level settings.
For more information about when Amazon S3 considers a bucket or an object public, see The Meaning of "Public". The following operations are related to GetPublicAccessBlock :. Specifies whether Amazon S3 should block public access control lists ACLs for this bucket and objects in this bucket. Setting this element to TRUE causes the following behavior:. Enabling this setting doesn't affect the persistence of any existing ACLs and doesn't prevent new public ACLs from being set.
Specifies whether Amazon S3 should block public bucket policies for this bucket. Specifies whether Amazon S3 should restrict public bucket policies for this bucket. Setting this element to TRUE restricts access to this bucket to only Amazon Web Service principals and authorized users within this account if the bucket has a public policy.
Enabling this setting doesn't affect previously stored bucket policies, except that public and cross-account access within any public bucket policy, including non-public delegation to specific accounts, is blocked. This action is useful to determine if a bucket exists and you have permission to access it. The action returns a OK if the bucket exists and you have permission to access it. If the bucket does not exist or you do not have permission to access it, the HEAD request returns a generic Not Found or Forbidden code.
A message body is not included, so you cannot determine the exception beyond these error codes. To use this operation, you must have permissions to perform the s3:ListBucket action. To use this API against an access point, you must provide the alias of the access point in place of the bucket name or specify the access point ARN.
When using the access point ARN, you must direct requests to the access point hostname. For more information see, Using access points. The HEAD action retrieves metadata from an object without returning the object itself.
This action is useful if you're only interested in an object's metadata. The response is identical to the GET response except that there is no response body. It is not possible to retrieve the exact exception beyond these error codes. Explained in previous section s3 — Resource created out of the session s3. You can also give a name that is different from the object name. If your file is existing as a. Including the sub folders in your s3 Bucket.
If you have any issues, you can also comment below to ask a question. Spread the knowledge by sharing : 0 More. I assume you already have Python 3 installed and running in your system.
If you do not you can sign up for free with Amazon here to get started. Now that we have the basic requirements out of the way we can dive in and start setting up the system. Also I want to note that all of the code you will find in this guide can be found in Github here.
Next we need to go ahead and install the Python dependencies to be able to use the boto3 library. You can do this by running the pip tool as shown below. Keep in mind make sure your virtual environment is activated before you run this step. If you wish to use it without having a virtual environment which I do not recommend you can go ahead and simply install it globally in your user account. Now that we have setup our system we need to verify the library is installed properly and it works.
You can do this by simply checking in a python shell using the following command shown below, if you encounter an error please delete your virtual environment and try again. If the problem still persists please drop me a line below and I will try to help you. As you can see above the boto3 library got loaded successfully and the version is 1. This is as of Late so this may be different in your system based on when you install it.
The first thing we need to do is click on create bucket and just fill in the details as shown below. For now these options are not very important we just want to get started and programmatically interact with our setup. For now you can leave the rest of the options default for example for me the following settings were default at the time of this writing:.
Once you verify that go ahead and create your first bucket. For me this looks something like this:. Now that we have our bucket created we need to proceed further into setting up a way to interact with it programmatically. It's also possible to use boto3 without any credentials cached and instead use either s3fs or just rely on the config file reddit. Probably not. It should work out to about same as looping over each key with boto3 maybe with an added call to list objects, but you need that in both cases — hume.
Another approach building on the answer from bjc that leverages the built in Path library and parses the s3 uri for you: import boto3 from pathlib import Path from urllib. Matthew Cox Matthew Cox 7 7 silver badges 19 19 bronze badges.
Shahar Gino Shahar Gino 75 1 1 silver badge 9 9 bronze badges. Roman Mirochnik Roman Mirochnik 1 1 silver badge 6 6 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. You are not using the session you created to download the file, you're using s3 client you created. If you want to use the client you need to specify credentials. It abstracts the S3 functions into a simpler interface.
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