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Conver to regular Go vendor + dep tool
This commit is contained in:
Andrey Smirnov
+208
@@ -0,0 +1,208 @@
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package session
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import (
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"os"
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"path/filepath"
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"strconv"
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"github.com/aws/aws-sdk-go/aws/credentials"
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)
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// envConfig is a collection of environment values the SDK will read
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// setup config from. All environment values are optional. But some values
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// such as credentials require multiple values to be complete or the values
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// will be ignored.
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type envConfig struct {
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// Environment configuration values. If set both Access Key ID and Secret Access
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// Key must be provided. Session Token and optionally also be provided, but is
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// not required.
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//
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// # Access Key ID
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// AWS_ACCESS_KEY_ID=AKID
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// AWS_ACCESS_KEY=AKID # only read if AWS_ACCESS_KEY_ID is not set.
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//
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// # Secret Access Key
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// AWS_SECRET_ACCESS_KEY=SECRET
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// AWS_SECRET_KEY=SECRET=SECRET # only read if AWS_SECRET_ACCESS_KEY is not set.
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//
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// # Session Token
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// AWS_SESSION_TOKEN=TOKEN
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Creds credentials.Value
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// Region value will instruct the SDK where to make service API requests to. If is
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// not provided in the environment the region must be provided before a service
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// client request is made.
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//
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// AWS_REGION=us-east-1
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//
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// # AWS_DEFAULT_REGION is only read if AWS_SDK_LOAD_CONFIG is also set,
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// # and AWS_REGION is not also set.
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// AWS_DEFAULT_REGION=us-east-1
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Region string
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// Profile name the SDK should load use when loading shared configuration from the
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// shared configuration files. If not provided "default" will be used as the
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// profile name.
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//
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// AWS_PROFILE=my_profile
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//
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// # AWS_DEFAULT_PROFILE is only read if AWS_SDK_LOAD_CONFIG is also set,
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// # and AWS_PROFILE is not also set.
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// AWS_DEFAULT_PROFILE=my_profile
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Profile string
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// SDK load config instructs the SDK to load the shared config in addition to
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// shared credentials. This also expands the configuration loaded from the shared
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// credentials to have parity with the shared config file. This also enables
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// Region and Profile support for the AWS_DEFAULT_REGION and AWS_DEFAULT_PROFILE
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// env values as well.
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//
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// AWS_SDK_LOAD_CONFIG=1
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EnableSharedConfig bool
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// Shared credentials file path can be set to instruct the SDK to use an alternate
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// file for the shared credentials. If not set the file will be loaded from
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// $HOME/.aws/credentials on Linux/Unix based systems, and
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// %USERPROFILE%\.aws\credentials on Windows.
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//
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// AWS_SHARED_CREDENTIALS_FILE=$HOME/my_shared_credentials
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SharedCredentialsFile string
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// Shared config file path can be set to instruct the SDK to use an alternate
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// file for the shared config. If not set the file will be loaded from
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// $HOME/.aws/config on Linux/Unix based systems, and
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// %USERPROFILE%\.aws\config on Windows.
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//
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// AWS_CONFIG_FILE=$HOME/my_shared_config
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SharedConfigFile string
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// Sets the path to a custom Credentials Authroity (CA) Bundle PEM file
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// that the SDK will use instead of the the system's root CA bundle.
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// Only use this if you want to configure the SDK to use a custom set
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// of CAs.
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//
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// Enabling this option will attempt to merge the Transport
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// into the SDK's HTTP client. If the client's Transport is
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// not a http.Transport an error will be returned. If the
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// Transport's TLS config is set this option will cause the
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// SDK to overwrite the Transport's TLS config's RootCAs value.
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//
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// Setting a custom HTTPClient in the aws.Config options will override this setting.
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// To use this option and custom HTTP client, the HTTP client needs to be provided
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// when creating the session. Not the service client.
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//
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// AWS_CA_BUNDLE=$HOME/my_custom_ca_bundle
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CustomCABundle string
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}
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var (
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credAccessEnvKey = []string{
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"AWS_ACCESS_KEY_ID",
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"AWS_ACCESS_KEY",
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}
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credSecretEnvKey = []string{
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"AWS_SECRET_ACCESS_KEY",
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"AWS_SECRET_KEY",
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}
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credSessionEnvKey = []string{
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"AWS_SESSION_TOKEN",
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}
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regionEnvKeys = []string{
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"AWS_REGION",
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"AWS_DEFAULT_REGION", // Only read if AWS_SDK_LOAD_CONFIG is also set
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}
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profileEnvKeys = []string{
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"AWS_PROFILE",
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"AWS_DEFAULT_PROFILE", // Only read if AWS_SDK_LOAD_CONFIG is also set
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}
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)
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// loadEnvConfig retrieves the SDK's environment configuration.
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// See `envConfig` for the values that will be retrieved.
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//
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// If the environment variable `AWS_SDK_LOAD_CONFIG` is set to a truthy value
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// the shared SDK config will be loaded in addition to the SDK's specific
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// configuration values.
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func loadEnvConfig() envConfig {
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enableSharedConfig, _ := strconv.ParseBool(os.Getenv("AWS_SDK_LOAD_CONFIG"))
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return envConfigLoad(enableSharedConfig)
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}
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// loadEnvSharedConfig retrieves the SDK's environment configuration, and the
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// SDK shared config. See `envConfig` for the values that will be retrieved.
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//
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// Loads the shared configuration in addition to the SDK's specific configuration.
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// This will load the same values as `loadEnvConfig` if the `AWS_SDK_LOAD_CONFIG`
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// environment variable is set.
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func loadSharedEnvConfig() envConfig {
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return envConfigLoad(true)
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}
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func envConfigLoad(enableSharedConfig bool) envConfig {
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cfg := envConfig{}
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cfg.EnableSharedConfig = enableSharedConfig
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setFromEnvVal(&cfg.Creds.AccessKeyID, credAccessEnvKey)
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setFromEnvVal(&cfg.Creds.SecretAccessKey, credSecretEnvKey)
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setFromEnvVal(&cfg.Creds.SessionToken, credSessionEnvKey)
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// Require logical grouping of credentials
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if len(cfg.Creds.AccessKeyID) == 0 || len(cfg.Creds.SecretAccessKey) == 0 {
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cfg.Creds = credentials.Value{}
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} else {
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cfg.Creds.ProviderName = "EnvConfigCredentials"
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}
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regionKeys := regionEnvKeys
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profileKeys := profileEnvKeys
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if !cfg.EnableSharedConfig {
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regionKeys = regionKeys[:1]
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profileKeys = profileKeys[:1]
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}
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setFromEnvVal(&cfg.Region, regionKeys)
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setFromEnvVal(&cfg.Profile, profileKeys)
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cfg.SharedCredentialsFile = sharedCredentialsFilename()
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cfg.SharedConfigFile = sharedConfigFilename()
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cfg.CustomCABundle = os.Getenv("AWS_CA_BUNDLE")
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return cfg
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}
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func setFromEnvVal(dst *string, keys []string) {
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for _, k := range keys {
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if v := os.Getenv(k); len(v) > 0 {
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*dst = v
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break
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}
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}
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}
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func sharedCredentialsFilename() string {
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if name := os.Getenv("AWS_SHARED_CREDENTIALS_FILE"); len(name) > 0 {
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return name
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}
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return filepath.Join(userHomeDir(), ".aws", "credentials")
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}
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func sharedConfigFilename() string {
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if name := os.Getenv("AWS_CONFIG_FILE"); len(name) > 0 {
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return name
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}
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return filepath.Join(userHomeDir(), ".aws", "config")
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}
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func userHomeDir() string {
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homeDir := os.Getenv("HOME") // *nix
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if len(homeDir) == 0 { // windows
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homeDir = os.Getenv("USERPROFILE")
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}
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return homeDir
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}
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