:integration: aws
:plugin: s3
:type: input
:default_codec: plain

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:version: %VERSION%
:release_date: %RELEASE_DATE%
:changelog_url: %CHANGELOG_URL%
:include_path: ../../../../logstash/docs/include
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[id="plugins-{type}s-{plugin}"]

=== S3 input plugin

include::{include_path}/plugin_header-integration.asciidoc[]

==== Description

Stream events from files from a S3 bucket.

IMPORTANT: The S3 input plugin only supports AWS S3. 
Other S3 compatible storage solutions are not supported.

Each line from each file generates an event.
Files ending in `.gz` are handled as gzip'ed files.

Files that are archived to AWS Glacier will be skipped.

[id="plugins-{type}s-{plugin}-ecs_metadata"]
==== Event Metadata and the Elastic Common Schema (ECS)
This plugin adds cloudfront metadata to event.
When ECS compatibility is disabled, the value is stored in the root level.
When ECS is enabled, the value is stored in the `@metadata` where it can be used by other plugins in your pipeline.

Here’s how ECS compatibility mode affects output.
[cols="<l,<l,e,<e"]
|=======================================================================
| ECS disabled | ECS v1 | Availability | Description

| cloudfront_fields | [@metadata][s3][cloudfront][fields] | available when the file is a CloudFront log | column names of log
| cloudfront_version | [@metadata][s3][cloudfront][version] | available when the file is a CloudFront log | version of log
|=======================================================================

[id="plugins-{type}s-{plugin}-options"]
==== S3 Input Configuration Options

This plugin supports the following configuration options plus the <<plugins-{type}s-{plugin}-common-options>> described later.

[cols="<,<,<",options="header",]
|=======================================================================
|Setting |Input type|Required
| <<plugins-{type}s-{plugin}-access_key_id>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-additional_settings>> |<<hash,hash>>|No
| <<plugins-{type}s-{plugin}-aws_credentials_file>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-backup_add_prefix>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-backup_to_bucket>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-backup_to_dir>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-bucket>> |<<string,string>>|Yes
| <<plugins-{type}s-{plugin}-delete>> |<<boolean,boolean>>|No
| <<plugins-{type}s-{plugin}-ecs_compatibility>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-endpoint>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-exclude_pattern>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-gzip_pattern>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-include_object_properties>> |<<boolean,boolean>>|No
| <<plugins-{type}s-{plugin}-interval>> |<<number,number>>|No
| <<plugins-{type}s-{plugin}-prefix>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-proxy_uri>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-region>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-role_arn>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-role_session_name>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-secret_access_key>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-session_token>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-sincedb_path>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-temporary_directory>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-use_aws_bundled_ca>> |<<boolean,boolean>>|No
| <<plugins-{type}s-{plugin}-watch_for_new_files>> |<<boolean,boolean>>|No
| <<plugins-{type}s-{plugin}-web_identity_token_file>> |<<string,string>>|No
|=======================================================================

Also see <<plugins-{type}s-{plugin}-common-options>> for a list of options supported by all
input plugins.

&nbsp;

[id="plugins-{type}s-{plugin}-access_key_id"]
===== `access_key_id` 

  * Value type is <<string,string>>
  * There is no default value for this setting.

This plugin uses the AWS SDK and supports several ways to get credentials, which will be tried in this order:

1. Static configuration, using `access_key_id` and `secret_access_key` params in logstash plugin config
2. External credentials file specified by `aws_credentials_file`
3. Environment variables `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY`
4. Environment variables `AMAZON_ACCESS_KEY_ID` and `AMAZON_SECRET_ACCESS_KEY`
5. IAM Instance Profile (available when running inside EC2)


[id="plugins-{type}s-{plugin}-additional_settings"]
===== `additional_settings`

  * Value type is <<hash,hash>>
  * Default value is `{}`

Key-value pairs of settings and corresponding values used to parametrize
the connection to s3. See full list in https://docs.aws.amazon.com/sdk-for-ruby/v3/api/Aws/S3/Client.html[the AWS SDK documentation]. Example:

[source,ruby]
    input {
      s3 {
        access_key_id => "1234"
        secret_access_key => "secret"
        bucket => "logstash-test"
        additional_settings => {
          force_path_style => true
          follow_redirects => false
        }
      }
    }

[id="plugins-{type}s-{plugin}-aws_credentials_file"]
===== `aws_credentials_file` 

  * Value type is <<string,string>>
  * There is no default value for this setting.

Path to YAML file containing a hash of AWS credentials.
This file will only be loaded if `access_key_id` and
`secret_access_key` aren't set. The contents of the
file should look like this:

[source,ruby]
----------------------------------
    :access_key_id: "12345"
    :secret_access_key: "54321"
----------------------------------


[id="plugins-{type}s-{plugin}-backup_add_prefix"]
===== `backup_add_prefix` 

  * Value type is <<string,string>>
  * Default value is `nil`

Append a prefix to the key (full path including file name in s3) after processing.
If backing up to another (or the same) bucket, this effectively lets you
choose a new 'folder' to place the files in

[id="plugins-{type}s-{plugin}-backup_to_bucket"]
===== `backup_to_bucket` 

  * Value type is <<string,string>>
  * Default value is `nil`

Name of a S3 bucket to backup processed files to.

[id="plugins-{type}s-{plugin}-backup_to_dir"]
===== `backup_to_dir` 

  * Value type is <<string,string>>
  * Default value is `nil`

Path of a local directory to backup processed files to.

[id="plugins-{type}s-{plugin}-bucket"]
===== `bucket` 

  * This is a required setting.
  * Value type is <<string,string>>
  * There is no default value for this setting.

The name of the S3 bucket.

[id="plugins-{type}s-{plugin}-delete"]
===== `delete` 

  * Value type is <<boolean,boolean>>
  * Default value is `false`

Whether to delete processed files from the original bucket.

[id="plugins-{type}s-{plugin}-ecs_compatibility"]
===== `ecs_compatibility`

  * Value type is <<string,string>>
  * Supported values are:
  ** `disabled`: does not use ECS-compatible field names
  ** `v1`,`v8`: uses metadata fields that are compatible with Elastic Common Schema

Controls this plugin's compatibility with the
{ecs-ref}[Elastic Common Schema (ECS)].
See <<plugins-{type}s-{plugin}-ecs_metadata>> for detailed information.

[id="plugins-{type}s-{plugin}-endpoint"]
===== `endpoint`

  * Value type is <<string,string>>
  * There is no default value for this setting.

The endpoint to connect to. By default it is constructed using the value of `region`.
This is useful when connecting to S3 compatible services, but beware that these aren't
guaranteed to work correctly with the AWS SDK.

[id="plugins-{type}s-{plugin}-exclude_pattern"]
===== `exclude_pattern` 

  * Value type is <<string,string>>
  * Default value is `nil`

Ruby style regexp of keys to exclude from the bucket.

Note that files matching the pattern are skipped _after_ they have been listed. 
Consider using <<plugins-{type}s-{plugin}-prefix>> instead where possible.

Example:

[source,ruby]
-----
"exclude_pattern" => "\/2020\/04\/"
-----

This pattern excludes all logs containing "/2020/04/" in the path.


[id="plugins-{type}s-{plugin}-gzip_pattern"]
===== `gzip_pattern`

  * Value type is <<string,string>>
  * Default value is `"\.gz(ip)?$"`

Regular expression used to determine whether an input file is in gzip format.

[id="plugins-{type}s-{plugin}-include_object_properties"]
===== `include_object_properties`

  * Value type is <<boolean,boolean>>
  * Default value is `false`

Whether or not to include the S3 object's properties (last_modified, content_type, metadata) into each Event at
`[@metadata][s3]`. Regardless of this setting, `[@metadata][s3][key]` will always be present.

[id="plugins-{type}s-{plugin}-interval"]
===== `interval` 

  * Value type is <<number,number>>
  * Default value is `60`

Interval to wait between to check the file list again after a run is finished.
Value is in seconds.

[id="plugins-{type}s-{plugin}-prefix"]
===== `prefix` 

  * Value type is <<string,string>>
  * Default value is `nil`

If specified, the prefix of filenames in the bucket must match (not a regexp)

[id="plugins-{type}s-{plugin}-proxy_uri"]
===== `proxy_uri` 

  * Value type is <<string,string>>
  * There is no default value for this setting.

URI to proxy server if required

[id="plugins-{type}s-{plugin}-region"]
===== `region` 

  * Value type is <<string,string>>
  * Default value is `"us-east-1"`

The AWS Region

[id="plugins-{type}s-{plugin}-role_arn"]
===== `role_arn`

  * Value type is <<string,string>>
  * There is no default value for this setting.

The AWS IAM Role to assume, if any.
This is used to generate temporary credentials, typically for cross-account access.
See the https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRole.html[AssumeRole API documentation] for more information.

[id="plugins-{type}s-{plugin}-role_session_name"]
===== `role_session_name`

  * Value type is <<string,string>>
  * Default value is `"logstash"`

Session name to use when assuming an IAM role.

[id="plugins-{type}s-{plugin}-secret_access_key"]
===== `secret_access_key` 

  * Value type is <<string,string>>
  * There is no default value for this setting.

The AWS Secret Access Key

[id="plugins-{type}s-{plugin}-session_token"]
===== `session_token` 

  * Value type is <<string,string>>
  * There is no default value for this setting.

The AWS Session token for temporary credential

[id="plugins-{type}s-{plugin}-sincedb_path"]
===== `sincedb_path` 

  * Value type is <<string,string>>
  * Default value is `nil`

Where to write the since database (keeps track of the date
the last handled file was added to S3). The default will write
sincedb files to in the directory '{path.data}/plugins/inputs/s3/'

If specified, this setting must be a filename path and not just a directory.

[id="plugins-{type}s-{plugin}-temporary_directory"]
===== `temporary_directory` 

  * Value type is <<string,string>>
  * Default value is `"/tmp/logstash"`

Set the directory where logstash will store the tmp files before processing them.

[id="plugins-{type}s-{plugin}-use_aws_bundled_ca"]
===== `use_aws_bundled_ca`

* Value type is <<boolean,boolean>>
* Default value is `false`

Use bundled CA certificates that ship with AWS SDK to verify SSL peer certificates.
For cases where the default certificates are unavailable, e.g. Windows,
you can set this to `true`.

[id="plugins-{type}s-{plugin}-watch_for_new_files"]
===== `watch_for_new_files`

  * Value type is <<boolean,boolean>>
  * Default value is `true`

Whether or not to watch for new files.
Disabling this option causes the input to close itself after processing the files from a single listing.

[id="plugins-{type}s-{plugin}-web_identity_token_file"]
===== `web_identity_token_file`

  * Value type is <<string,string>>

Absolute path to the file on disk containing OIDC token for https://docs.aws.amazon.com/eks/latest/userguide/iam-roles-for-service-accounts.html[IRSA].
Set the path to `"/var/run/secrets/eks.amazonaws.com/serviceaccount/token"` when using Amazon EKS.
If specified, <<plugins-{type}s-{plugin}-role_arn>> must not be empty.

For the details of setting up IAM roles and Kubernetes service accounts, check out https://docs.aws.amazon.com/eks/latest/userguide/associate-service-account-role.html[userguide]

[id="plugins-{type}s-{plugin}-common-options"]
include::{include_path}/{type}.asciidoc[]

:default_codec!:
