config

package module
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 Go to latest Published: Oct 1, 2020 License: Apache-2.0 Imports: 24 Imported by: 6,640

Documentation

Overview

Package config provides utilities for loading configuration from multiple sources that can be used to configure the SDK's API clients, and utilities.

The config package will load configuration from environment variables, AWS shared configuration file (~/.aws/config), and AWS shared credentials file (~/.aws/credentials).

Use the LoadDefaultConfig to load configuration from all the SDK's supported sources, and resolve credentials using the SDK's default credential chain.

* TODO Additional documentation needed.

Index

Examples

Constants

View Source 
const (

	// ErrCodeSharedConfig AWS SDK Error Code for Shared Configuration Errors
	ErrCodeSharedConfig = "SharedConfigErr"

	// DefaultSharedConfigProfile is the default profile to be used when
	// loading configuration from the config files if another profile name
	// is not provided.
	DefaultSharedConfigProfile = `default`
)
View Source 
const CredentialsSourceName = "EnvConfigCredentials"

CredentialsSourceName provides a name of the provider when config is loaded from environment.

Variables

View Source 
var DefaultAWSConfigResolvers = []AWSConfigResolver{
	ResolveDefaultAWSConfig,
	ResolveCustomCABundle,
	ResolveHTTPClient,
	ResolveEndpointResolver,
	ResolveAPIOptions,

	ResolveRegion,

	ResolveDefaultRegion,

	ResolveCredentials,
}

DefaultAWSConfigResolvers are a slice of functions that will resolve external configuration values into AWS configuration values.

This will setup the AWS configuration's Region,

View Source 
var DefaultLoaders = []Loader{
	LoadEnvConfig,
	LoadSharedConfigIgnoreNotExist,
}

DefaultLoaders are a slice of functions that will read external configuration sources for configuration values. These values are read by the AWSConfigResolvers using interfaces to extract specific information from the external configuration.

View Source 
var DefaultSharedConfigFiles = []string{
	DefaultSharedCredentialsFilename(),
	DefaultSharedConfigFilename(),
}

DefaultSharedConfigFiles is a slice of the default shared config files that the will be used in order to load the SharedConfig.

Functions

func DefaultSharedConfigFilename 

func DefaultSharedConfigFilename() string

DefaultSharedConfigFilename returns the SDK's default file path for the shared config file.

Builds the shared config file path based on the OS's platform.

  • Linux/Unix: $HOME/.aws/config
  • Windows: %USERPROFILE%\.aws\config

func DefaultSharedCredentialsFilename 

func DefaultSharedCredentialsFilename() string

DefaultSharedCredentialsFilename returns the SDK's default file path for the shared credentials file.

Builds the shared config file path based on the OS's platform.

  • Linux/Unix: $HOME/.aws/credentials
  • Windows: %USERPROFILE%\.aws\credentials

func GetAPIOptions 

func GetAPIOptions(configs Configs) (o []func(*middleware.Stack) error, found bool, err error)

GetAPIOptions searches the slice of configs and returns the first APIOptions found.

func GetAssumeRoleCredentialProviderOptions 

func GetAssumeRoleCredentialProviderOptions(configs Configs) (f func(*stscreds.AssumeRoleOptions), found bool, err error)

GetAssumeRoleCredentialProviderOptions searches the slice of configs and returns the first function found

func GetCredentialsProvider 

func GetCredentialsProvider(configs Configs) (p aws.CredentialsProvider, found bool, err error)

GetCredentialsProvider searches the Configs for a CredentialsProviderProvider and returns the value if found. Returns an error if a provider fails before a value is found.

func GetCustomCABundle 

func GetCustomCABundle(configs Configs) ([]byte, bool, error)

GetCustomCABundle searchds the Configs for a CustomCABundleProvider and returns the value if found. Returns an error if a provider fails before a value is found.

func GetDefaultRegion 

func GetDefaultRegion(configs Configs) (value string, found bool, err error)

GetDefaultRegion searches the slice of configs and returns the first fallback region found

func GetEC2RoleCredentialProviderOptions 

func GetEC2RoleCredentialProviderOptions(configs Configs) (f func(*ec2rolecreds.Options), found bool, err error)

GetEC2RoleCredentialProviderOptions searches the slice of configs and returns the first function found

func GetEndpointCredentialProviderOptions 

func GetEndpointCredentialProviderOptions(configs Configs) (f func(*endpointcreds.Options), found bool, err error)

GetEndpointCredentialProviderOptions searches the slice of configs and returns the first function found

func GetEndpointResolver 

func GetEndpointResolver(configs Configs) (f aws.EndpointResolver, found bool, err error)

GetEndpointResolver searches the provided config sources for a EndpointResolverFunc that can be used to configure the aws.Config.EndpointResolver value.

func GetMFATokenFunc 

func GetMFATokenFunc(configs Configs) (func() (string, error), bool, error)

GetMFATokenFunc searches the Configs for a MFATokenFuncProvider and returns the value if found. Returns an error if a provider fails before a value is found.

func GetProcessCredentialOptions 

func GetProcessCredentialOptions(configs Configs) (f func(*processcreds.Options), found bool, err error)

GetProcessCredentialOptions searches the slice of configs and returns the first function found

func GetRegion 

func GetRegion(configs Configs) (string, bool, error)

GetRegion searchds the Configs for a RegionProvider and returns the value if found. Returns an error if a provider fails before a value is found.

func GetSharedConfigFiles 

func GetSharedConfigFiles(configs Configs) ([]string, bool, error)

GetSharedConfigFiles searchds the Configs for a SharedConfigFilesProvider and returns the value if found. Returns an error if a provider fails before a value is found.

func GetSharedConfigProfile 

func GetSharedConfigProfile(configs Configs) (string, bool, error)

GetSharedConfigProfile searches the Configs for a SharedConfigProfileProvider and returns the value if found. Returns an error if a provider fails before a value is found.

func GetWebIdentityCredentialProviderOptions 

func GetWebIdentityCredentialProviderOptions(configs Configs) (f func(*stscreds.WebIdentityRoleOptions), found bool, err error)

GetWebIdentityCredentialProviderOptions searches the slice of configs and returns the first function found

func LoadDefaultConfig 

func LoadDefaultConfig(configs ...Config) (aws.Config, error)

LoadDefaultConfig reads the SDK's default external configurations, and populates an AWS Config with the values from the external configurations.

An optional variadic set of additional Config values can be provided as input that will be prepended to the Configs slice. Use this to add custom configuration. The custom configurations must satisfy the respective providers for their data or the custom data will be ignored by the resolvers and config loaders. 

cfg, err := config.LoadDefaultConfig(
   WithSharedConfigProfile("test-profile"),
)
if err != nil {
   panic(fmt.Sprintf("failed loading config, %v", err))
}

The default configuration sources are: * Environment Variables * Shared Configuration and Shared Credentials files.

func ResolveAPIOptions 

func ResolveAPIOptions(cfg *aws.Config, configs Configs) error

ResolveAPIOptions extracts the first instance of APIOptions and sets `aws.Config.APIOptions` to the resolved API options if one has not been resolved from other sources.

func ResolveCredentialChain 

func ResolveCredentialChain(cfg *aws.Config, configs Configs) (err error)

ResolveCredentialChain resolves a credential provider chain using EnvConfig and SharedConfig if present in the slice of provided configs.

The resolved CredentialProvider will be wrapped in a cache to ensure the credentials are only refreshed when needed. This also protects the credential provider to be used concurrently.

func ResolveCredentialProvider 

func ResolveCredentialProvider(cfg *aws.Config, configs Configs) (bool, error)

ResolveCredentialProvider extracts the first instance of Credentials from the config slices.

The resolved CredentialProvider will be wrapped in a cache to ensure the credentials are only refreshed when needed. This also protects the credential provider to be used concurrently.

Config providers used: * CredentialsProviderProvider

func ResolveCredentials 

func ResolveCredentials(cfg *aws.Config, configs Configs) error

ResolveCredentials extracts a credential provider from slice of config sources.

If an explict credential provider is not found the resolver will fallback to resolving credentials by extracting a credential provider from EnvConfig and SharedConfig.

func ResolveCustomCABundle 

func ResolveCustomCABundle(cfg *aws.Config, configs Configs) error

ResolveCustomCABundle extracts the first instance of a custom CA bundle filename from the external configurations. It will update the HTTP Client's builder to be configured with the custom CA bundle.

Config provider used: * CustomCABundleProvider

func ResolveDefaultAWSConfig 

func ResolveDefaultAWSConfig(cfg *aws.Config, configs Configs) error

ResolveDefaultAWSConfig will write default configuration values into the cfg value. It will write the default values, overwriting any previous value.

This should be used as the first resolver in the slice of resolvers when resolving external configuration.

func ResolveDefaultRegion 

func ResolveDefaultRegion(cfg *aws.Config, configs Configs) error

ResolveDefaultRegion extracts the first instance of a default region and sets `aws.Config.Region` to the default region if region had not been resolved from other sources.

func ResolveEndpointResolver 

func ResolveEndpointResolver(cfg *aws.Config, configs Configs) error

ResolveEndpointResolver extracts the first instance of a EndpointResolverFunc from the config slice and sets the functions result on the aws.Config.EndpointResolver

func ResolveHTTPClient 

func ResolveHTTPClient(cfg *aws.Config, configs Configs) error

ResolveHTTPClient extracts the first instance of a HTTPClient and sets `aws.Config.HTTPClient` to the HTTPClient instance if one has not been resolved from other sources.

func ResolveRegion 

func ResolveRegion(cfg *aws.Config, configs Configs) error

ResolveRegion extracts the first instance of a Region from the Configs slice.

Config providers used: * RegionProvider

Types

type APIOptionsProvider 

type APIOptionsProvider interface {
	GetAPIOptions() ([]func(*middleware.Stack) error, bool, error)
}

APIOptionsProvider is an interface for retrieving APIOptions.

type AWSConfigResolver 

type AWSConfigResolver func(cfg *aws.Config, configs Configs) error

An AWSConfigResolver will extract configuration data from the Configs slice using the provider interfaces to extract specific functionality. The extracted configuration values will be written to the AWS Config value.

The resolver should return an error if it it fails to extract the data, the data is malformed, or incomplete.

type AssumeRoleCredentialProviderOptions 

type AssumeRoleCredentialProviderOptions interface {
	GetAssumeRoleCredentialProviderOptions() (func(*stscreds.AssumeRoleOptions), bool, error)
}

AssumeRoleCredentialProviderOptions is an interface for retrieving a function for setting the stscreds.AssumeRoleProviderOptions.

type AssumeRoleTokenProviderNotSetError 

type AssumeRoleTokenProviderNotSetError struct{}

AssumeRoleTokenProviderNotSetError is an error returned when creating a session when the MFAToken option is not set when shared config is configured load assume a role with an MFA token.

func (AssumeRoleTokenProviderNotSetError) Error 

func (e AssumeRoleTokenProviderNotSetError) Error() string

Error is the error message

type Config 

type Config interface{}

A Config represents a generic configuration value or set of values. This type will be used by the AWSConfigResolvers to extract

General the Config type will use type assertion against the Provider interfaces to extract specific data from the Config.

func LoadEnvConfig 

func LoadEnvConfig(cfgs Configs) (Config, error)

LoadEnvConfig reads configuration values from the OS's environment variables. Returning the a Config typed EnvConfig to satisfy the ConfigLoader func type.

func LoadSharedConfig 

func LoadSharedConfig(configs Configs) (Config, error)

LoadSharedConfig uses the Configs passed in to load the SharedConfig from file The file names and profile name are sourced from the Configs.

If profile name is not provided DefaultSharedConfigProfile (default) will be used.

If shared config filenames are not provided DefaultSharedConfigFiles will be used.

Config providers used: * SharedConfigProfileProvider * SharedConfigFilesProvider

func LoadSharedConfigIgnoreNotExist 

func LoadSharedConfigIgnoreNotExist(configs Configs) (Config, error)

LoadSharedConfigIgnoreNotExist is an alias for LoadSharedConfig with the addition of ignoring when none of the files exist or when the profile is not found in any of the files.

type Configs 

type Configs []Config

Configs is a slice of Config values. These values will be used by the AWSConfigResolvers to extract external configuration values to populate the AWS Config type.

Use AppendFromLoaders to add additional external Config values that are loaded from external sources.

Use ResolveAWSConfig after external Config values have been added or loaded to extract the loaded configuration values into the AWS Config.

func (Configs) AppendFromLoaders 

func (cs Configs) AppendFromLoaders(loaders []Loader) (Configs, error)

AppendFromLoaders iterates over the slice of loaders passed in calling each loader function in order. The external config value returned by the loader will be added to the returned Configs slice.

If a loader returns an error this method will stop iterating and return that error.

func (Configs) ResolveAWSConfig 

func (cs Configs) ResolveAWSConfig(resolvers []AWSConfigResolver) (aws.Config, error)

ResolveAWSConfig returns a AWS configuration populated with values by calling the resolvers slice passed in. Each resolver is called in order. Any resolver may overwrite the AWS Configuration value of a previous resolver.

If an resolver returns an error this method will return that error, and stop iterating over the resolvers.

func (Configs) ResolveConfig 

func (cs Configs) ResolveConfig(f func(configs []interface{}) error) error

ResolveConfig calls the provide function passing slice of configuration sources. This implements the aws.ConfigResolver interface.

type CredentialRequiresARNError 

type CredentialRequiresARNError struct {
	// type of credentials that were configured.
	Type string

	// Profile name the credentials were in.
	Profile string
}

CredentialRequiresARNError provides the error for shared config credentials that are incorrectly configured in the shared config or credentials file.

func (CredentialRequiresARNError) Error 

func (e CredentialRequiresARNError) Error() string

Error satisfies the error interface.

type CredentialsProviderProvider 

type CredentialsProviderProvider interface {
	GetCredentialsProvider() (aws.CredentialsProvider, bool, error)
}

CredentialsProviderProvider provides access to the credentials external configuration value.

type CustomCABundleProvider 

type CustomCABundleProvider interface {
	GetCustomCABundle() ([]byte, error)
}

CustomCABundleProvider provides access to the custom CA bundle PEM bytes.

type DefaultRegionProvider 

type DefaultRegionProvider interface {
	GetDefaultRegion() (string, bool, error)
}

DefaultRegionProvider is an interface for retrieving a default region if a region was not resolved from other sources

type EC2RoleCredentialProviderOptions 

type EC2RoleCredentialProviderOptions interface {
	GetEC2RoleCredentialProviderOptions() (func(*ec2rolecreds.Options), bool, error)
}

EC2RoleCredentialProviderOptions is an interface for retrieving a function for setting the ec2rolecreds.Provider options.

type EndpointCredentialProviderOptions 

type EndpointCredentialProviderOptions interface {
	GetEndpointCredentialProviderOptions() (func(*endpointcreds.Options), bool, error)
}

EndpointCredentialProviderOptions is an interface for retrieving a function for setting the endpointcreds.ProviderOptions.

type EndpointResolverFuncProvider 

type EndpointResolverFuncProvider interface {
	GetEndpointResolver() (aws.EndpointResolver, bool, error)
}

EndpointResolverFuncProvider is an interface for retrieving an aws.EndpointResolver from a configuration source

type EnvConfig 

type EnvConfig struct {
	// Environment configuration values. If set both Access Key ID and Secret Access
	// Key must be provided. Session Token and optionally also be provided, but is
	// not required.
	//
	//	# Access Key ID
	//	AWS_ACCESS_KEY_ID=AKID
	//	AWS_ACCESS_KEY=AKID # only read if AWS_ACCESS_KEY_ID is not set.
	//
	//	# Secret Access Key
	//	AWS_SECRET_ACCESS_KEY=SECRET
	//	AWS_SECRET_KEY=SECRET # only read if AWS_SECRET_ACCESS_KEY is not set.
	//
	//	# Session Token
	//	AWS_SESSION_TOKEN=TOKEN
	Credentials aws.Credentials

	// ContainerCredentialsEndpoint value is the HTTP enabled endpoint to retrieve credentials
	// using the endpointcreds.Provider
	ContainerCredentialsEndpoint string

	// ContainerCredentialsRelativePath is the relative URI path that will be used when attempting to retrieve
	// credentials from the container endpoint.
	ContainerCredentialsRelativePath string

	// ContainerAuthorizationToken is the authorization token that will be included in the HTTP Authorization
	// header when attempting to retrieve credentials from the container credentials endpoint.
	ContainerAuthorizationToken string

	// Region value will instruct the SDK where to make service API requests to. If is
	// not provided in the environment the region must be provided before a service
	// client request is made.
	//
	//	AWS_REGION=us-west-2
	//	AWS_DEFAULT_REGION=us-west-2
	Region string

	// Profile name the SDK should load use when loading shared configuration from the
	// shared configuration files. If not provided "default" will be used as the
	// profile name.
	//
	//	AWS_PROFILE=my_profile
	//	AWS_DEFAULT_PROFILE=my_profile
	SharedConfigProfile string

	// Shared credentials file path can be set to instruct the SDK to use an alternate
	// file for the shared credentials. If not set the file will be loaded from
	// $HOME/.aws/credentials on Linux/Unix based systems, and
	// %USERPROFILE%\.aws\credentials on Windows.
	//
	//	AWS_SHARED_CREDENTIALS_FILE=$HOME/my_shared_credentials
	SharedCredentialsFile string

	// Shared config file path can be set to instruct the SDK to use an alternate
	// file for the shared config. If not set the file will be loaded from
	// $HOME/.aws/config on Linux/Unix based systems, and
	// %USERPROFILE%\.aws\config on Windows.
	//
	//	AWS_CONFIG_FILE=$HOME/my_shared_config
	SharedConfigFile string

	// Sets the path to a custom Credentials Authroity (CA) Bundle PEM file
	// that the SDK will use instead of the system's root CA bundle.
	// Only use this if you want to configure the SDK to use a custom set
	// of CAs.
	//
	// Enabling this option will attempt to merge the Transport
	// into the SDK's HTTP client. If the client's Transport is
	// not a http.Transport an error will be returned. If the
	// Transport's TLS config is set this option will cause the
	// SDK to overwrite the Transport's TLS config's  RootCAs value.
	//
	// Setting a custom HTTPClient in the aws.Config options will override this setting.
	// To use this option and custom HTTP client, the HTTP client needs to be provided
	// when creating the config. Not the service client.
	//
	//  AWS_CA_BUNDLE=$HOME/my_custom_ca_bundle
	CustomCABundle string

	// Enables endpoint discovery via environment variables.
	//
	//	AWS_ENABLE_ENDPOINT_DISCOVERY=true
	EnableEndpointDiscovery *bool

	// Specifies the WebIdentity token the SDK should use to assume a role
	// with.
	//
	//  AWS_WEB_IDENTITY_TOKEN_FILE=file_path
	WebIdentityTokenFilePath string

	// Specifies the IAM role arn to use when assuming an role.
	//
	//  AWS_ROLE_ARN=role_arn
	RoleARN string

	// Specifies the IAM role session name to use when assuming a role.
	//
	//  AWS_ROLE_SESSION_NAME=session_name
	RoleSessionName string

	// Specifies if the S3 service should allow ARNs to direct the region
	// the client's requests are sent to.
	//
	// AWS_S3_USE_ARN_REGION=true
	S3UseARNRegion *bool
}

EnvConfig is a collection of environment values the SDK will read setup config from. All environment values are optional. But some values such as credentials require multiple values to be complete or the values will be ignored.

func NewEnvConfig 

func NewEnvConfig() (EnvConfig, error)

NewEnvConfig retrieves the SDK's environment configuration. See `EnvConfig` for the values that will be retrieved.

func (EnvConfig) GetCustomCABundle 

func (c EnvConfig) GetCustomCABundle() ([]byte, error)

GetCustomCABundle returns the custom CA bundle's PEM bytes if the file was

func (EnvConfig) GetEnableEndpointDiscovery 

func (c EnvConfig) GetEnableEndpointDiscovery() (value, ok bool, err error)

GetEnableEndpointDiscovery returns whether to enable service endpoint discovery

func (EnvConfig) GetRegion 

func (c EnvConfig) GetRegion() (string, error)

GetRegion returns the AWS Region if set in the environment. Returns an empty string if not set.

func (EnvConfig) GetS3UseARNRegion 

func (c EnvConfig) GetS3UseARNRegion() (value, ok bool, err error)

GetS3UseARNRegion returns whether to allow ARNs to direct the region the S3 client's requests are sent to.

func (EnvConfig) GetSharedConfigFiles 

func (c EnvConfig) GetSharedConfigFiles() ([]string, error)

GetSharedConfigFiles returns a slice of filenames set in the environment.

Will return the filenames in the order of: * Shared Credentials * Shared Config

func (EnvConfig) GetSharedConfigProfile 

func (c EnvConfig) GetSharedConfigProfile() (string, error)

GetSharedConfigProfile returns the shared config profile if set in the environment. Returns an empty string if not set.

type HTTPClient 

type HTTPClient interface {
	Do(*http.Request) (*http.Response, error)
}

HTTPClient is an HTTP client implementation

func GetHTTPClient 

func GetHTTPClient(configs Configs) (c HTTPClient, found bool, err error)

GetHTTPClient searches the slice of configs and returns the first HTTPClient found.

type HTTPClientProvider 

type HTTPClientProvider interface {
	GetHTTPClient() (HTTPClient, bool, error)
}

HTTPClientProvider is an interface for retrieving an HTTPClient.

type Loader 

type Loader func(Configs) (Config, error)

A Loader is used to load external configuration data and returns it as a generic Config type.

The loader should return an error if it fails to load the external configuration or the configuration data is malformed, or required components missing.

type MFATokenFuncProvider 

type MFATokenFuncProvider interface {
	GetMFATokenFunc() (func() (string, error), error)
}

MFATokenFuncProvider provides access to the MFA token function needed for Assume Role with MFA.

type ProcessCredentialOptions 

type ProcessCredentialOptions interface {
	GetProcessCredentialOptions() (func(*processcreds.Options), bool, error)
}

ProcessCredentialOptions is an interface for retrieving a function for setting the processcreds.Options.

type RegionProvider 

type RegionProvider interface {
	GetRegion() (string, error)
}

RegionProvider provides access to the region external configuration value.

type SharedConfig 

type SharedConfig struct {
	Profile string

	// Credentials values from the config file. Both aws_access_key_id
	// and aws_secret_access_key must be provided together in the same file
	// to be considered valid. The values will be ignored if not a complete group.
	// aws_session_token is an optional field that can be provided if both of the
	// other two fields are also provided.
	//
	//	aws_access_key_id
	//	aws_secret_access_key
	//	aws_session_token
	Credentials aws.Credentials

	CredentialSource     string
	CredentialProcess    string
	WebIdentityTokenFile string

	RoleARN             string
	ExternalID          string
	MFASerial           string
	RoleSessionName     string
	RoleDurationSeconds *time.Duration

	SourceProfileName string
	Source            *SharedConfig

	// Region is the region the SDK should use for looking up AWS service endpoints
	// and signing requests.
	//
	//	region
	Region string

	// EnableEndpointDiscovery can be enabled in the shared config by setting
	// endpoint_discovery_enabled to true
	//
	//	endpoint_discovery_enabled = true
	EnableEndpointDiscovery *bool

	// Specifies if the S3 service should allow ARNs to direct the region
	// the client's requests are sent to.
	//
	// s3_use_arn_region=true
	S3UseARNRegion *bool
}

SharedConfig represents the configuration fields of the SDK config files.

func NewSharedConfig 

func NewSharedConfig(profile string, filenames []string) (SharedConfig, error)

NewSharedConfig retrieves the configuration from the list of files using the profile provided. The order the files are listed will determine precedence. Values in subsequent files will overwrite values defined in earlier files.

For example, given two files A and B. Both define credentials. If the order of the files are A then B, B's credential values will be used instead of A's.

func (SharedConfig) GetCredentialsProvider 

func (c SharedConfig) GetCredentialsProvider() (aws.Credentials, error)

GetCredentialsProvider returns the credentials for a profile if they were set.

func (*SharedConfig) GetEnableEndpointDiscovery 

func (c *SharedConfig) GetEnableEndpointDiscovery() (value, ok bool, err error)

GetEnableEndpointDiscovery returns whether to enable service endpoint discovery

func (SharedConfig) GetRegion 

func (c SharedConfig) GetRegion() (string, error)

GetRegion returns the region for the profile if a region is set.

func (*SharedConfig) GetS3UseARNRegion 

func (c *SharedConfig) GetS3UseARNRegion() (value, ok bool, err error)

GetS3UseARNRegion retions if the S3 service should allow ARNs to direct the region the client's requests are sent to.

type SharedConfigAssumeRoleError 

type SharedConfigAssumeRoleError struct {
	Profile string
	RoleARN string
	Err     error
}

SharedConfigAssumeRoleError is an error for the shared config when the profile contains assume role information, but that information is invalid or not complete.

func (SharedConfigAssumeRoleError) Error 

func (e SharedConfigAssumeRoleError) Error() string

func (SharedConfigAssumeRoleError) Unwrap 

func (e SharedConfigAssumeRoleError) Unwrap() error

Unwrap returns the underlying error that caused the failure.

type SharedConfigFileNotExistError 

type SharedConfigFileNotExistError struct {
	Filename string
	Profile  string
	Err      error
}

SharedConfigFileNotExistError is an error for the shared config when the filename does not exist.

func (SharedConfigFileNotExistError) Error 

func (e SharedConfigFileNotExistError) Error() string

func (SharedConfigFileNotExistError) Unwrap 

func (e SharedConfigFileNotExistError) Unwrap() error

Unwrap returns the underlying error that caused the failure.

type SharedConfigFilesProvider 

type SharedConfigFilesProvider interface {
	GetSharedConfigFiles() ([]string, error)
}

SharedConfigFilesProvider provides access to the shared config filesnames external configuration value.

type SharedConfigLoadError 

type SharedConfigLoadError struct {
	Filename string
	Err      error
}

SharedConfigLoadError is an error for the shared config file failed to load.

func (SharedConfigLoadError) Error 

func (e SharedConfigLoadError) Error() string

func (SharedConfigLoadError) Unwrap 

func (e SharedConfigLoadError) Unwrap() error

Unwrap retunrs the underlying error that caused the failure.

type SharedConfigNotExistErrors 

type SharedConfigNotExistErrors []error

SharedConfigNotExistErrors provides an error type for failure to load shared config because resources do not exist.

func (SharedConfigNotExistErrors) Error 

func (es SharedConfigNotExistErrors) Error() string

type SharedConfigProfileNotExistError 

type SharedConfigProfileNotExistError struct {
	Filename string
	Profile  string
	Err      error
}

SharedConfigProfileNotExistError is an error for the shared config when the profile was not find in the config file.

func (SharedConfigProfileNotExistError) Error 

func (e SharedConfigProfileNotExistError) Error() string

func (SharedConfigProfileNotExistError) Unwrap 

func (e SharedConfigProfileNotExistError) Unwrap() error

Unwrap returns the underlying error that caused the failure.

type SharedConfigProfileProvider 

type SharedConfigProfileProvider interface {
	GetSharedConfigProfile() (string, error)
}

SharedConfigProfileProvider provides access to the shared config profile name external configuration value.

type WebIdentityCredentialProviderOptions 

type WebIdentityCredentialProviderOptions interface {
	GetWebIdentityCredentialProviderOptions() (func(*stscreds.WebIdentityRoleOptions), bool, error)
}

WebIdentityCredentialProviderOptions is an interface for retrieving a function for setting the stscreds.WebIdentityCredentialProviderOptions.

type WithAPIOptions 

type WithAPIOptions []func(*middleware.Stack) error

WithAPIOptions wraps a slice of middlewares stack mutators and satisfies the APIOptionsProvider interface.

func (WithAPIOptions) GetAPIOptions 

func (w WithAPIOptions) GetAPIOptions() ([]func(*middleware.Stack) error, bool, error)

GetAPIOptions returns the wrapped middleware stack mutators.

type WithAssumeRoleCredentialProviderOptions 

type WithAssumeRoleCredentialProviderOptions func(*stscreds.AssumeRoleOptions)

WithAssumeRoleCredentialProviderOptions wraps a function and satisfies the EC2RoleCredentialProviderOptions interface

func (WithAssumeRoleCredentialProviderOptions) GetAssumeRoleCredentialProviderOptions 

func (w WithAssumeRoleCredentialProviderOptions) GetAssumeRoleCredentialProviderOptions() (func(*stscreds.AssumeRoleOptions), bool, error)

GetAssumeRoleCredentialProviderOptions returns the wrapped function

type WithAssumeRoleDuration 

type WithAssumeRoleDuration time.Duration

WithAssumeRoleDuration provides a wrapping type of a time.Duration to satisfy

func (WithAssumeRoleDuration) GetAssumeRoleDuration 

func (w WithAssumeRoleDuration) GetAssumeRoleDuration() (time.Duration, bool, error)

GetAssumeRoleDuration returns the wrapped time.Duration value to use when setting the assume role credentials duration.

type WithCredentialsProvider 

type WithCredentialsProvider struct {
	aws.CredentialsProvider
}

WithCredentialsProvider provides wrapping of a credentials Value to satisfy the CredentialsProviderProvider interface.

Example 
package main

import (
	"context"
	"fmt"
	"os"

	"github.com/aws/aws-sdk-go-v2/aws"
	"github.com/aws/aws-sdk-go-v2/config"
	"github.com/aws/aws-sdk-go-v2/credentials"
)

func main() {
	cfg, err := config.LoadDefaultConfig(
		// Hard coded credentials.
		config.WithCredentialsProvider{
			CredentialsProvider: credentials.StaticCredentialsProvider{
				Value: aws.Credentials{
					AccessKeyID: "AKID", SecretAccessKey: "SECRET", SessionToken: "SESSION",
					Source: "example hard coded credentials",
				},
			},
		},
	)
	if err != nil {
		fmt.Fprintf(os.Stderr, "failed to load config, %v", err)
		os.Exit(1)
	}

	// Credentials retrieve will be called automatically internally to the SDK
	// service clients created with the cfg value.
	creds, err := cfg.Credentials.Retrieve(context.Background())
	if err != nil {
		fmt.Fprintf(os.Stderr, "failed to get credentials, %v", err)
		os.Exit(1)
	}

	fmt.Println("Credentials Source:", creds.Source)

}

Output:

Credentials Source: example hard coded credentials

func (WithCredentialsProvider) GetCredentialsProvider 

func (v WithCredentialsProvider) GetCredentialsProvider() (aws.CredentialsProvider, bool, error)

GetCredentialsProvider returns the credentials value.

type WithCustomCABundle 

type WithCustomCABundle []byte

WithCustomCABundle provides wrapping of a region string to satisfy the CustomCABundleProvider interface.

func (WithCustomCABundle) GetCustomCABundle 

func (v WithCustomCABundle) GetCustomCABundle() ([]byte, error)

GetCustomCABundle returns the CA bundle PEM bytes.

type WithDefaultRegion 

type WithDefaultRegion string

WithDefaultRegion wraps a string and satisfies the DefaultRegionProvider interface

func (WithDefaultRegion) GetDefaultRegion 

func (w WithDefaultRegion) GetDefaultRegion() (string, bool, error)

GetDefaultRegion returns wrapped fallback region

type WithEC2IMDSRegion 

type WithEC2IMDSRegion struct {
	// If unset will be defaulted to Background context
	Context context.Context

	// If unset will default to generic EC2 IMDS client.
	Client *ec2imds.Client
}

WithEC2IMDSRegion provides a RegionProvider that retrieves the region from the EC2 Metadata service.

TODO should this provider be added to the default config loading?

func (WithEC2IMDSRegion) GetRegion 

func (p WithEC2IMDSRegion) GetRegion() (string, error)

GetRegion attempts to retrieve the region from EC2 Metadata service.

type WithEC2RoleCredentialProviderOptions 

type WithEC2RoleCredentialProviderOptions func(*ec2rolecreds.Options)

WithEC2RoleCredentialProviderOptions wraps a function and satisfies the EC2RoleCredentialProviderOptions interface

func (WithEC2RoleCredentialProviderOptions) GetEC2RoleCredentialProviderOptions 

func (w WithEC2RoleCredentialProviderOptions) GetEC2RoleCredentialProviderOptions() (func(*ec2rolecreds.Options), bool, error)

GetEC2RoleCredentialProviderOptions returns the wrapped function

type WithEndpointCredentialProviderOptions 

type WithEndpointCredentialProviderOptions func(*endpointcreds.Options)

WithEndpointCredentialProviderOptions wraps a function and satisfies the EC2RoleCredentialProviderOptions interface

func (WithEndpointCredentialProviderOptions) GetEndpointCredentialProviderOptions 

func (w WithEndpointCredentialProviderOptions) GetEndpointCredentialProviderOptions() (func(*endpointcreds.Options), bool, error)

GetEndpointCredentialProviderOptions returns the wrapped function

type WithEndpointResolver 

type WithEndpointResolver struct {
	aws.EndpointResolver
}

WithEndpointResolver wraps a aws.EndpointResolver value to satisfy the EndpointResolverFuncProvider interface

func (WithEndpointResolver) GetEndpointResolver 

func (w WithEndpointResolver) GetEndpointResolver() (aws.EndpointResolver, bool, error)

GetEndpointResolver returns the wrapped EndpointResolver

type WithHTTPClient 

type WithHTTPClient struct {
	HTTPClient
}

WithHTTPClient wraps a HTTPClient and satisfies the HTTPClientProvider interface

func (WithHTTPClient) GetHTTPClient 

func (w WithHTTPClient) GetHTTPClient() (HTTPClient, bool, error)

GetHTTPClient returns the wrapped HTTPClient. Returns an error if the wrapped client is nil.

type WithMFATokenFunc 

type WithMFATokenFunc func() (string, error)

WithMFATokenFunc provides wrapping of a string to satisfy the MFATokenFuncProvider interface.

func (WithMFATokenFunc) GetMFATokenFunc 

func (p WithMFATokenFunc) GetMFATokenFunc() (func() (string, error), error)

GetMFATokenFunc returns the MFA Token function.

type WithProcessCredentialOptions 

type WithProcessCredentialOptions func(*processcreds.Options)

WithProcessCredentialOptions wraps a function and satisfies the ProcessCredentialOptions interface

func (WithProcessCredentialOptions) GetProcessCredentialOptions 

func (w WithProcessCredentialOptions) GetProcessCredentialOptions() (func(*processcreds.Options), bool, error)

GetProcessCredentialOptions returns the wrapped function

type WithRegion 

type WithRegion string

WithRegion provides wrapping of a region string to satisfy the RegionProvider interface.

func (WithRegion) GetRegion 

func (v WithRegion) GetRegion() (string, error)

GetRegion returns the region string.

type WithSharedConfigFiles 

type WithSharedConfigFiles []string

WithSharedConfigFiles wraps a slice of strings to satisfy the SharedConfigFilesProvider interface so a slice of custom shared config files ared used when loading the SharedConfig.

func (WithSharedConfigFiles) GetSharedConfigFiles 

func (c WithSharedConfigFiles) GetSharedConfigFiles() ([]string, error)

GetSharedConfigFiles returns the slice of shared config files.

type WithSharedConfigProfile 

type WithSharedConfigProfile string

WithSharedConfigProfile wraps a strings to satisfy the SharedConfigProfileProvider interface so a slice of custom shared config files ared used when loading the SharedConfig.

Example 
package main

import (
	"fmt"
	"os"
	"path/filepath"

	"github.com/aws/aws-sdk-go-v2/config"
)

func main() {
	cfg, err := config.LoadDefaultConfig(
		// Specify the shared configuration profile to load.
		config.WithSharedConfigProfile("exampleProfile"),

		// Optionally specify the specific shared configuraiton
		// files to load the profile from.
		config.WithSharedConfigFiles([]string{
			filepath.Join("testdata", "shared_config"),
		}),
	)
	if err != nil {
		fmt.Fprintf(os.Stderr, "failed to load config, %v", err)
		os.Exit(1)
	}

	// Region loaded from credentials file.
	fmt.Println("Region:", cfg.Region)

}

Output:

Region: us-west-2

func (WithSharedConfigProfile) GetSharedConfigProfile 

func (c WithSharedConfigProfile) GetSharedConfigProfile() (string, error)

GetSharedConfigProfile returns the shared config profile.

type WithWebIdentityCredentialProviderOptions 

type WithWebIdentityCredentialProviderOptions func(*stscreds.WebIdentityRoleOptions)

WithWebIdentityCredentialProviderOptions wraps a function and satisfies the EC2RoleCredentialProviderOptions interface

func (WithWebIdentityCredentialProviderOptions) GetWebIdentityCredentialProviderOptions 

func (w WithWebIdentityCredentialProviderOptions) GetWebIdentityCredentialProviderOptions() (func(*stscreds.WebIdentityRoleOptions), bool, error)

GetWebIdentityCredentialProviderOptions returns the wrapped function

Source Files

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