terraform/internal/getproviders/errors.go

233 lines
7.8 KiB
Go

package getproviders
import (
"fmt"
"net/url"
svchost "github.com/hashicorp/terraform-svchost"
"github.com/hashicorp/terraform/addrs"
)
// ErrHostNoProviders is an error type used to indicate that a hostname given
// in a provider address does not support the provider registry protocol.
type ErrHostNoProviders struct {
Hostname svchost.Hostname
// HasOtherVersionis set to true if the discovery process detected
// declarations of services named "providers" whose version numbers did not
// match any version supported by the current version of Terraform.
//
// If this is set, it's helpful to hint to the user in an error message
// that the provider host may be expecting an older or a newer version
// of Terraform, rather than that it isn't a provider registry host at all.
HasOtherVersion bool
}
func (err ErrHostNoProviders) Error() string {
switch {
case err.HasOtherVersion:
return fmt.Sprintf("host %s does not support the provider registry protocol required by this Terraform version, but may be compatible with a different Terraform version", err.Hostname.ForDisplay())
default:
return fmt.Sprintf("host %s does not offer a Terraform provider registry", err.Hostname.ForDisplay())
}
}
// ErrHostUnreachable is an error type used to indicate that a hostname
// given in a provider address did not resolve in DNS, did not respond to an
// HTTPS request for service discovery, or otherwise failed to correctly speak
// the service discovery protocol.
type ErrHostUnreachable struct {
Hostname svchost.Hostname
Wrapped error
}
func (err ErrHostUnreachable) Error() string {
return fmt.Sprintf("could not connect to %s: %s", err.Hostname.ForDisplay(), err.Wrapped.Error())
}
// Unwrap returns the underlying error that occurred when trying to reach the
// indicated host.
func (err ErrHostUnreachable) Unwrap() error {
return err.Wrapped
}
// ErrUnauthorized is an error type used to indicate that a hostname
// given in a provider address returned a "401 Unauthorized" or "403 Forbidden"
// error response when we tried to access it.
type ErrUnauthorized struct {
Hostname svchost.Hostname
// HaveCredentials is true when the request that failed included some
// credentials, and thus it seems that those credentials were invalid.
// Conversely, HaveCredentials is false if the request did not include
// credentials at all, in which case it seems that credentials must be
// provided.
HaveCredentials bool
}
func (err ErrUnauthorized) Error() string {
switch {
case err.HaveCredentials:
return fmt.Sprintf("host %s rejected the given authentication credentials", err.Hostname)
default:
return fmt.Sprintf("host %s requires authentication credentials", err.Hostname)
}
}
// ErrProviderNotFound is an error type used to indicate that requested provider
// was not found in the source(s) included in the Description field. This can be
// used to produce user-friendly error messages.
type ErrProviderNotFound struct {
Provider addrs.Provider
Sources []string
}
func (err ErrProviderNotFound) Error() string {
return fmt.Sprintf(
"provider %s was not found in any of the search locations",
err.Provider,
)
}
// ErrRegistryProviderNotKnown is an error type used to indicate that the hostname
// given in a provider address does appear to be a provider registry but that
// registry does not know about the given provider namespace or type.
//
// A caller serving requests from an end-user should recognize this error type
// and use it to produce user-friendly hints for common errors such as failing
// to specify an explicit source for a provider not in the default namespace
// (one not under registry.terraform.io/hashicorp/). The default error message
// for this type is a direct description of the problem with no such hints,
// because we expect that the caller will have better context to decide what
// hints are appropriate, e.g. by looking at the configuration given by the
// user.
type ErrRegistryProviderNotKnown struct {
Provider addrs.Provider
}
func (err ErrRegistryProviderNotKnown) Error() string {
return fmt.Sprintf(
"provider registry %s does not have a provider named %s",
err.Provider.Hostname.ForDisplay(),
err.Provider,
)
}
// ErrPlatformNotSupported is an error type used to indicate that a particular
// version of a provider isn't available for a particular target platform.
//
// This is returned when DownloadLocation encounters a 404 Not Found response
// from the underlying registry, because it presumes that a caller will only
// ask for the DownloadLocation for a version it already found the existence
// of via AvailableVersions.
type ErrPlatformNotSupported struct {
Provider addrs.Provider
Version Version
Platform Platform
// MirrorURL, if non-nil, is the base URL of the mirror that serviced
// the request in place of the provider's origin registry. MirrorURL
// is nil for a direct query.
MirrorURL *url.URL
}
func (err ErrPlatformNotSupported) Error() string {
if err.MirrorURL != nil {
return fmt.Sprintf(
"provider mirror %s does not have a package of %s %s for %s",
err.MirrorURL.String(),
err.Provider,
err.Version,
err.Platform,
)
}
return fmt.Sprintf(
"provider %s %s is not available for %s",
err.Provider,
err.Version,
err.Platform,
)
}
// ErrProtocolNotSupported is an error type used to indicate that a particular
// version of a provider is not supported by the current version of Terraform.
//
// Specfically, this is returned when the version's plugin protocol is not supported.
//
// When available, the error will include a suggested version that can be displayed to
// the user. Otherwise it will return UnspecifiedVersion
type ErrProtocolNotSupported struct {
Provider addrs.Provider
Version Version
Suggestion Version
}
func (err ErrProtocolNotSupported) Error() string {
return fmt.Sprintf(
"provider %s %s is not supported by this version of terraform",
err.Provider,
err.Version,
)
}
// ErrQueryFailed is an error type used to indicate that the hostname given
// in a provider address does appear to be a provider registry but that when
// we queried it for metadata for the given provider the server returned an
// unexpected error.
//
// This is used for any error responses other than "Not Found", which would
// indicate the absense of a provider and is thus reported using
// ErrProviderNotKnown instead.
type ErrQueryFailed struct {
Provider addrs.Provider
Wrapped error
// MirrorURL, if non-nil, is the base URL of the mirror that serviced
// the request in place of the provider's origin registry. MirrorURL
// is nil for a direct query.
MirrorURL *url.URL
}
func (err ErrQueryFailed) Error() string {
if err.MirrorURL != nil {
return fmt.Sprintf(
"failed to query provider mirror %s for %s: %s",
err.MirrorURL.String(),
err.Provider.String(),
err.Wrapped.Error(),
)
}
return fmt.Sprintf(
"could not query provider registry for %s: %s",
err.Provider.String(),
err.Wrapped.Error(),
)
}
// Unwrap returns the underlying error that occurred when trying to reach the
// indicated host.
func (err ErrQueryFailed) Unwrap() error {
return err.Wrapped
}
// ErrIsNotExist returns true if and only if the given error is one of the
// errors from this package that represents an affirmative response that a
// requested object does not exist.
//
// This is as opposed to errors indicating that the source is unavailable
// or misconfigured in some way, where we therefore cannot say for certain
// whether the requested object exists.
//
// If a caller needs to take a special action based on something not existing,
// such as falling back on some other source, use this function rather than
// direct type assertions so that the set of possible "not exist" errors can
// grow in future.
func ErrIsNotExist(err error) bool {
switch err.(type) {
case ErrProviderNotFound, ErrRegistryProviderNotKnown, ErrPlatformNotSupported:
return true
default:
return false
}
}