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service.go
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service.go
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//
// Copyright 2023 The Chainloop Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package service
import (
"context"
"fmt"
backend "github.com/chainloop-dev/chainloop/internal/blobmanager"
casJWT "github.com/chainloop-dev/chainloop/internal/robotaccount/cas"
"github.com/chainloop-dev/chainloop/internal/servicelogger"
kerrors "github.com/go-kratos/kratos/v2/errors"
"github.com/go-kratos/kratos/v2/log"
"github.com/go-kratos/kratos/v2/middleware/auth/jwt"
"github.com/google/wire"
)
// ProviderSet is service providers.
var ProviderSet = wire.NewSet(NewByteStreamService, NewResourceService, NewDownloadService)
type commonService struct {
log *log.Helper
backends backend.Providers
}
func (s *commonService) loadBackend(ctx context.Context, providerType, secretID string) (backend.UploaderDownloader, error) {
// get the OCI provider from the map
p, ok := s.backends[providerType]
if !ok || p == nil {
return nil, kerrors.NotFound("backend provider", fmt.Sprintf("backend %q not found", providerType))
}
s.log.Infow("msg", "selected provider", "provider", providerType)
// Retrieve the OCI backend from where to download the file
backend, err := p.FromCredentials(ctx, secretID)
if err != nil {
return nil, fmt.Errorf("failed to retrieve backend: %w", err)
}
return backend, nil
}
type NewOpt func(s *commonService)
func WithLogger(logger log.Logger) NewOpt {
return func(s *commonService) {
s.log = servicelogger.ScopedHelper(logger, "service")
}
}
func newCommonService(backends backend.Providers, opts ...NewOpt) *commonService {
s := &commonService{
log: servicelogger.EmptyLogger(),
backends: backends,
}
for _, opt := range opts {
opt(s)
}
return s
}
// Extract the JWT claims from the context, note that the JWT verification has happened in the middleware
func infoFromAuth(ctx context.Context) (*casJWT.Claims, error) {
rawClaims, ok := jwt.FromContext(ctx)
if !ok {
return nil, kerrors.Unauthorized("cas", "missing authentication information")
}
claims, ok := rawClaims.(*casJWT.Claims)
if !ok {
return nil, kerrors.Unauthorized("cas", "invalid authentication information")
}
if claims.StoredSecretID == "" {
return nil, kerrors.Unauthorized("cas", "missing secret reference")
}
if claims.BackendType == "" {
return nil, kerrors.Unauthorized("cas", "missing backend type")
}
if claims.Role != casJWT.Uploader && claims.Role != casJWT.Downloader {
return nil, kerrors.Unauthorized("cas", "invalid role")
}
return claims, nil
}