cfc65a13f6
This commit includes updates that affects the build, testing, and
deployment of Tile38.
- The root level build.sh has been broken up into multiple scripts
and placed in the "scripts" directory.
- The vendor directory has been updated to follow the Go modules
rules, thus `make` should work on isolated environments. Also
some vendored packages may have been updated to a later
version, if needed.
- The Makefile has been updated to allow for making single
binaries such as `make tile38-server`. There is some scaffolding
during the build process, so from now on all binaries should be
made using make. For example, to run a development version of
the tile38-cli binary, do this:
make tile38-cli && ./tile38-cli
not this:
go run cmd/tile38-cli/main.go
- Travis.CI docker push script has been updated to address a
change to Docker's JSON repo meta output, which in turn fixes
a bug where new Tile38 versions were not being properly pushed
to Docker
101 lines
3.2 KiB
Go
101 lines
3.2 KiB
Go
package credentials
|
|
|
|
import (
|
|
"github.com/aws/aws-sdk-go/aws/awserr"
|
|
)
|
|
|
|
var (
|
|
// ErrNoValidProvidersFoundInChain Is returned when there are no valid
|
|
// providers in the ChainProvider.
|
|
//
|
|
// This has been deprecated. For verbose error messaging set
|
|
// aws.Config.CredentialsChainVerboseErrors to true.
|
|
ErrNoValidProvidersFoundInChain = awserr.New("NoCredentialProviders",
|
|
`no valid providers in chain. Deprecated.
|
|
For verbose messaging see aws.Config.CredentialsChainVerboseErrors`,
|
|
nil)
|
|
)
|
|
|
|
// A ChainProvider will search for a provider which returns credentials
|
|
// and cache that provider until Retrieve is called again.
|
|
//
|
|
// The ChainProvider provides a way of chaining multiple providers together
|
|
// which will pick the first available using priority order of the Providers
|
|
// in the list.
|
|
//
|
|
// If none of the Providers retrieve valid credentials Value, ChainProvider's
|
|
// Retrieve() will return the error ErrNoValidProvidersFoundInChain.
|
|
//
|
|
// If a Provider is found which returns valid credentials Value ChainProvider
|
|
// will cache that Provider for all calls to IsExpired(), until Retrieve is
|
|
// called again.
|
|
//
|
|
// Example of ChainProvider to be used with an EnvProvider and EC2RoleProvider.
|
|
// In this example EnvProvider will first check if any credentials are available
|
|
// via the environment variables. If there are none ChainProvider will check
|
|
// the next Provider in the list, EC2RoleProvider in this case. If EC2RoleProvider
|
|
// does not return any credentials ChainProvider will return the error
|
|
// ErrNoValidProvidersFoundInChain
|
|
//
|
|
// creds := credentials.NewChainCredentials(
|
|
// []credentials.Provider{
|
|
// &credentials.EnvProvider{},
|
|
// &ec2rolecreds.EC2RoleProvider{
|
|
// Client: ec2metadata.New(sess),
|
|
// },
|
|
// })
|
|
//
|
|
// // Usage of ChainCredentials with aws.Config
|
|
// svc := ec2.New(session.Must(session.NewSession(&aws.Config{
|
|
// Credentials: creds,
|
|
// })))
|
|
//
|
|
type ChainProvider struct {
|
|
Providers []Provider
|
|
curr Provider
|
|
VerboseErrors bool
|
|
}
|
|
|
|
// NewChainCredentials returns a pointer to a new Credentials object
|
|
// wrapping a chain of providers.
|
|
func NewChainCredentials(providers []Provider) *Credentials {
|
|
return NewCredentials(&ChainProvider{
|
|
Providers: append([]Provider{}, providers...),
|
|
})
|
|
}
|
|
|
|
// Retrieve returns the credentials value or error if no provider returned
|
|
// without error.
|
|
//
|
|
// If a provider is found it will be cached and any calls to IsExpired()
|
|
// will return the expired state of the cached provider.
|
|
func (c *ChainProvider) Retrieve() (Value, error) {
|
|
var errs []error
|
|
for _, p := range c.Providers {
|
|
creds, err := p.Retrieve()
|
|
if err == nil {
|
|
c.curr = p
|
|
return creds, nil
|
|
}
|
|
errs = append(errs, err)
|
|
}
|
|
c.curr = nil
|
|
|
|
var err error
|
|
err = ErrNoValidProvidersFoundInChain
|
|
if c.VerboseErrors {
|
|
err = awserr.NewBatchError("NoCredentialProviders", "no valid providers in chain", errs)
|
|
}
|
|
return Value{}, err
|
|
}
|
|
|
|
// IsExpired will returned the expired state of the currently cached provider
|
|
// if there is one. If there is no current provider, true will be returned.
|
|
func (c *ChainProvider) IsExpired() bool {
|
|
if c.curr != nil {
|
|
return c.curr.IsExpired()
|
|
}
|
|
|
|
return true
|
|
}
|