org.apache.hadoop.fs.s3a.auth

Class MarshalledCredentialBinding

java.lang.Object

org.apache.hadoop.fs.s3a.auth.MarshalledCredentialBinding

public final class MarshalledCredentialBinding
extends Object

Class to bridge from the serializable/marshallabled MarshalledCredentialBinding class to/from AWS classes. This is to keep that class isolated and not dependent on aws-sdk JARs to load.

Field Summary

Fields

Modifier and Type	Field and Description
static String	NO_AWS_CREDENTIALS Error text on empty credentials: "No AWS credentials".

Method Summary

Modifier and Type	Method and Description
static MarshalledCredentials	fromAWSCredentials(com.amazonaws.auth.AWSSessionCredentials credentials) Create from a set of AWS credentials.
static MarshalledCredentials	fromEnvironment(Map<String,String> env) Build a set of credentials from the environment.
static MarshalledCredentials	fromFileSystem(URI uri, org.apache.hadoop.conf.Configuration conf) Loads the credentials from the owning S3A FS, including from Hadoop credential providers.
static MarshalledCredentials	fromSTSCredentials(com.amazonaws.services.securitytoken.model.Credentials credentials) Create a set of marshalled credentials from a set of credentials issued by an STS call.
static MarshalledCredentials	requestSessionCredentials(com.amazonaws.auth.AWSCredentialsProvider parentCredentials, com.amazonaws.ClientConfiguration awsConf, String stsEndpoint, String stsRegion, int duration, Invoker invoker) Request a set of credentials from an STS endpoint.
static com.amazonaws.auth.AWSCredentials	toAWSCredentials(MarshalledCredentials marshalled, MarshalledCredentials.CredentialTypeRequired typeRequired, String component) Create an AWS credential set from a set of marshalled credentials.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NO_AWS_CREDENTIALS

public static final String NO_AWS_CREDENTIALS

Error text on empty credentials: "No AWS credentials".

See Also:

Constant Field Values

Method Detail

fromSTSCredentials

public static MarshalledCredentials fromSTSCredentials(com.amazonaws.services.securitytoken.model.Credentials credentials)

Create a set of marshalled credentials from a set of credentials issued by an STS call.

Parameters:

credentials - AWS-provided session credentials

Returns:

a set of marshalled credentials.

fromAWSCredentials

public static MarshalledCredentials fromAWSCredentials(com.amazonaws.auth.AWSSessionCredentials credentials)

Create from a set of AWS credentials.

Parameters:

credentials - source credential.

Returns:

a set of marshalled credentials.

fromEnvironment

public static MarshalledCredentials fromEnvironment(Map<String,String> env)

Build a set of credentials from the environment.

Parameters:

env - environment.

Returns:

a possibly incomplete/invalid set of credentials.

fromFileSystem

public static MarshalledCredentials fromFileSystem(URI uri,
                                                   org.apache.hadoop.conf.Configuration conf)
                                            throws IOException

Loads the credentials from the owning S3A FS, including from Hadoop credential providers. There is no validation.

Parameters:

uri - binding URI

conf - configuration to load from

Returns:

the component

Throws:

IOException - on any load failure

toAWSCredentials

public static com.amazonaws.auth.AWSCredentials toAWSCredentials(MarshalledCredentials marshalled,
                                                                 MarshalledCredentials.CredentialTypeRequired typeRequired,
                                                                 String component)
                                                          throws NoAuthWithAWSException,
                                                                 NoAwsCredentialsException

Create an AWS credential set from a set of marshalled credentials. This code would seem to fit into (@link MarshalledCredentials}, and while it would from a code-hygiene perspective, to keep all AWS SDK references out of that class, the logic is implemented here instead,

Parameters:

marshalled - marshalled credentials

typeRequired - type of credentials required

component - component name for exception messages.

Returns:

a new set of credentials

Throws:

NoAuthWithAWSException - validation failure

NoAwsCredentialsException - the credentials are actually empty.

requestSessionCredentials

@Retries.RetryTranslated
public static MarshalledCredentials requestSessionCredentials(com.amazonaws.auth.AWSCredentialsProvider parentCredentials,
                                                                                       com.amazonaws.ClientConfiguration awsConf,
                                                                                       String stsEndpoint,
                                                                                       String stsRegion,
                                                                                       int duration,
                                                                                       Invoker invoker)
                                                                                throws IOException

Request a set of credentials from an STS endpoint.

Parameters:

parentCredentials - the parent credentials needed to talk to STS

awsConf - AWS client configuration

stsEndpoint - an endpoint, use "" for none

stsRegion - region; use if the endpoint isn't the AWS default.

duration - duration of the credentials in seconds. Minimum value: 900.

invoker - invoker to use for retrying the call.

Returns:

the credentials

Throws:

IOException - on a failure of the request