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|
package common
import (
"errors"
"fmt"
"gitlab.com/gitlab-org/gitlab-runner/helpers"
)
type logger interface {
Println(args ...interface{})
Warningln(args ...interface{})
}
type SecretsResolver interface {
Resolve(secrets Secrets) (JobVariables, error)
}
type SecretResolverRegistry interface {
Register(f secretResolverFactory)
GetFor(secret Secret) (SecretResolver, error)
}
type secretResolverFactory func(secret Secret) SecretResolver
type SecretResolver interface {
Name() string
IsSupported() bool
Resolve() (string, error)
}
var (
secretResolverRegistry = new(defaultSecretResolverRegistry)
ErrMissingLogger = errors.New("logger not provided")
ErrMissingSecretResolver = errors.New("no resolver that can handle the secret")
)
func GetSecretResolverRegistry() SecretResolverRegistry {
return secretResolverRegistry
}
type defaultSecretResolverRegistry struct {
factories []secretResolverFactory
}
func (r *defaultSecretResolverRegistry) Register(f secretResolverFactory) {
r.factories = append(r.factories, f)
}
func (r *defaultSecretResolverRegistry) GetFor(secret Secret) (SecretResolver, error) {
for _, f := range r.factories {
sr := f(secret)
if sr.IsSupported() {
return sr, nil
}
}
return nil, ErrMissingSecretResolver
}
func newSecretsResolver(l logger, registry SecretResolverRegistry) (SecretsResolver, error) {
if l == nil {
return nil, ErrMissingLogger
}
sr := &defaultSecretsResolver{
logger: l,
secretResolverRegistry: registry,
}
return sr, nil
}
type defaultSecretsResolver struct {
logger logger
secretResolverRegistry SecretResolverRegistry
}
func (r *defaultSecretsResolver) Resolve(secrets Secrets) (JobVariables, error) {
if secrets == nil {
return nil, nil
}
msg := fmt.Sprintf(
"%sResolving secrets%s",
helpers.ANSI_BOLD_CYAN,
helpers.ANSI_RESET,
)
r.logger.Println(msg)
variables := make(JobVariables, 0)
for variableKey, secret := range secrets {
r.logger.Println(fmt.Sprintf("Resolving secret %q...", variableKey))
v, err := r.handleSecret(variableKey, secret)
if err != nil {
return nil, err
}
if v != nil {
variables = append(variables, *v)
}
}
return variables, nil
}
func (r *defaultSecretsResolver) handleSecret(variableKey string, secret Secret) (*JobVariable, error) {
sr, err := r.secretResolverRegistry.GetFor(secret)
if err != nil {
r.logger.Warningln(fmt.Sprintf("Not resolved: %v", err))
return nil, nil
}
r.logger.Println(fmt.Sprintf("Using %q secret resolver...", sr.Name()))
value, err := sr.Resolve()
if err != nil {
return nil, err
}
variable := &JobVariable{
Key: variableKey,
Value: value,
File: secret.IsFile(),
}
return variable, nil
}
|
