It is never advised to hard-code credentials when making a connection to Athena (even though the option is there). Instead it is advised to use profile_name (set up by AWS Command Line Interface), Amazon Resource Name roles or environmental variables. Here is a list of supported environment variables:

  • AWS_ACCESS_KEY_ID: is equivalent to the dbConnect parameter - aws_access_key_id

  • AWS_SECRET_ACCESS_KEY: is equivalent to the dbConnect parameter - aws_secret_access_key

  • AWS_SESSION_TOKEN: is equivalent to the dbConnect parameter - aws_session_token

  • AWS_ROLE_ARN: is equivalent to the dbConnect parameter - role_arn

  • AWS_EXPIRATION: is equivalent to the dbConnect parameter - duration_seconds

  • AWS_ATHENA_S3_STAGING_DIR: is equivalent to the dbConnect parameter - s3_staging_dir

  • AWS_ATHENA_WORK_GROUP: is equivalent to dbConnect parameter - work_group

  • AWS_REGION: is equivalent to dbConnect parameter - region_name

NOTE: If you have set any environmental variables in .Renviron please restart your R in order for the changes to take affect.

# S4 method for AthenaDriver
dbConnect(
  drv,
  aws_access_key_id = NULL,
  aws_secret_access_key = NULL,
  aws_session_token = NULL,
  schema_name = "default",
  work_group = NULL,
  poll_interval = NULL,
  encryption_option = c("NULL", "SSE_S3", "SSE_KMS", "CSE_KMS"),
  kms_key = NULL,
  profile_name = NULL,
  role_arn = NULL,
  role_session_name = sprintf("RAthena-session-%s", as.integer(Sys.time())),
  duration_seconds = 3600L,
  s3_staging_dir = NULL,
  region_name = NULL,
  botocore_session = NULL,
  bigint = c("integer64", "integer", "numeric", "character"),
  binary = c("raw", "character"),
  json = c("auto", "character"),
  timezone = "UTC",
  keyboard_interrupt = TRUE,
  rstudio_conn_tab = TRUE,
  endpoint_override = NULL,
  ...
)

Arguments

drv

an object that inherits from DBIDriver, or an existing DBIConnection object (in order to clone an existing connection).

aws_access_key_id

AWS access key ID

aws_secret_access_key

AWS secret access key

aws_session_token

AWS temporary session token

schema_name

The schema_name to which the connection belongs

work_group

The name of the work group to run Athena queries , Currently defaulted to NULL.

poll_interval

Amount of time took when checking query execution status. Default set to a random interval between 0.5 - 1 seconds.

encryption_option

Athena encryption at rest link. Supported Amazon S3 Encryption Options ["NULL", "SSE_S3", "SSE_KMS", "CSE_KMS"]. Connection will default to NULL, usually changing this option is not required.

kms_key

AWS Key Management Service, please refer to link for more information around the concept.

profile_name

The name of a profile to use. If not given, then the default profile is used. To set profile name, the AWS Command Line Interface (AWS CLI) will need to be configured. To configure AWS CLI please refer to: Configuring the AWS CLI.

role_arn

The Amazon Resource Name (ARN) of the role to assume (such as arn:aws:sts::123456789012:assumed-role/role_name/role_session_name)

role_session_name

An identifier for the assumed role session. By default `RAthena` creates a session name sprintf("RAthena-session-%s", as.integer(Sys.time()))

duration_seconds

The duration, in seconds, of the role session. The value can range from 900 seconds (15 minutes) up to the maximum session duration setting for the role. This setting can have a value from 1 hour to 12 hours. By default duration is set to 3600 seconds (1 hour).

s3_staging_dir

The location in Amazon S3 where your query results are stored, such as s3://path/to/query/bucket/

region_name

Default region when creating new connections. Please refer to link for AWS region codes (region code example: Region = EU (Ireland) region_name = "eu-west-1")

botocore_session

Use this Botocore session instead of creating a new default one.

bigint

The R type that 64-bit integer types should be mapped to, default is [bit64::integer64], which allows the full range of 64 bit integers.

binary

The R type that [binary/varbinary] types should be mapped to, default is [raw]. If the mapping fails R will resort to [character] type. To ignore data type conversion set to ["character"].

json

Attempt to converts AWS Athena data types [arrays, json] using jsonlite:parse_json. If the mapping fails R will resort to [character] type. Custom Json parsers can be provide by using a function with data frame parameter. To ignore data type conversion set to ["character"].

timezone

Sets the timezone for the connection. The default is `UTC`. If `NULL` then no timezone is set, which defaults to the server's time zone. `AWS Athena` accepted time zones: https://docs.aws.amazon.com/athena/latest/ug/athena-supported-time-zones.html.

keyboard_interrupt

Stops AWS Athena process when R gets a keyboard interrupt, currently defaults to TRUE

rstudio_conn_tab

Optional to get AWS Athena Schema from AWS Glue Catalogue and display it in RStudio's Connections Tab. Default set to TRUE. For large `AWS Glue Catalogue` it is recommended to set `rstudio_conn_tab=FALSE` to ensure a fast connection.

endpoint_override

(character/list) The complete URL to use for the constructed client. Normally, botocore will automatically construct the appropriate URL to use when communicating with a service. You can specify a complete URL (including the "http/https" scheme) to override this behaviour. If endpoint_override is a character then AWS Athena endpoint is overridden. To override AWS S3 or AWS Glue endpoints a named list needs to be provided. The list can only have the following names ['athena', 's3', glue'] for example list(glue = "https://glue.eu-west-1.amazonaws.com")

...

Passes parameters to boto3.session.Session and client.

  • boto3.session.Session

    • botocore_session (botocore.session.Session): Use this Botocore session instead of creating a new default one.

  • client

    • config (botocore.client.Config) -- Advanced client configuration options. If region_name is specified in the client config, its value will take precedence over environment variables and configuration values, but not over a region_name value passed explicitly to the method. See botocore config documentation for more details.

    • api_version (string) -- The API version to use. By default, botocore will use the latest API version when creating a client. You only need to specify this parameter if you want to use a previous API version of the client.

    • use_ssl (boolean) -- Whether or not to use SSL. By default, SSL is used. Note that not all services support non-ssl connections.

    • verify (boolean/string) -- Whether or not to verify SSL certificates. 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.

Value

dbConnect() returns a s4 class. This object is used to communicate with AWS Athena.

See also

Examples

if (FALSE) {
# Connect to Athena using your aws access keys
 library(DBI)
 con <- dbConnect(RAthena::athena(),
                  aws_access_key_id='YOUR_ACCESS_KEY_ID', # 
                  aws_secret_access_key='YOUR_SECRET_ACCESS_KEY',
                  s3_staging_dir='s3://path/to/query/bucket/',
                  region_name='us-west-2')
 dbDisconnect(con)
 
# Connect to Athena using your profile name
# Profile name can be created by using AWS CLI
 con <- dbConnect(RAthena::athena(),
                  profile_name = "YOUR_PROFILE_NAME",
                  s3_staging_dir = 's3://path/to/query/bucket/')
 dbDisconnect(con)
 
# Connect to Athena using ARN role
 con <- dbConnect(RAthena::athena(),
                  profile_name = "YOUR_PROFILE_NAME",
                  role_arn = "arn:aws:sts::123456789012:assumed-role/role_name/role_session_name",
                  s3_staging_dir = 's3://path/to/query/bucket/')
                 
 dbDisconnect(con)
}