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promote_to_stage_v1alpha1.go
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promote_to_stage_v1alpha1.go
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package api
import (
"context"
"errors"
"fmt"
"connectrpc.com/connect"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/types"
kargoapi "github.com/akuity/kargo/api/v1alpha1"
"github.com/akuity/kargo/internal/kargo"
svcv1alpha1 "github.com/akuity/kargo/pkg/api/service/v1alpha1"
)
// PromoteToStage creates a Promotion resource to transition a specified Stage
// into the state represented by the specified Freight.
func (s *server) PromoteToStage(
ctx context.Context,
req *connect.Request[svcv1alpha1.PromoteToStageRequest],
) (*connect.Response[svcv1alpha1.PromoteToStageResponse], error) {
project := req.Msg.GetProject()
if err := validateFieldNotEmpty("project", project); err != nil {
return nil, err
}
stageName := req.Msg.GetStage()
if err := validateFieldNotEmpty("stage", stageName); err != nil {
return nil, err
}
freightName := req.Msg.GetFreight()
freightAlias := req.Msg.GetFreightAlias()
if (freightName == "" && freightAlias == "") || (freightName != "" && freightAlias != "") {
return nil, connect.NewError(
connect.CodeInvalidArgument,
errors.New("exactly one of freight or freightAlias should not be empty"),
)
}
if err := s.validateProjectExistsFn(ctx, project); err != nil {
return nil, err
}
stage, err := s.getStageFn(
ctx,
s.client,
types.NamespacedName{
Namespace: project,
Name: stageName,
},
)
if err != nil {
return nil, fmt.Errorf("get stage: %w", err)
}
if stage == nil {
return nil, connect.NewError(
connect.CodeNotFound,
fmt.Errorf(
"Stage %q not found in namespace %q",
stageName,
project,
),
)
}
freight, err := s.getFreightByNameOrAliasFn(
ctx,
s.client,
project,
freightName,
freightAlias,
)
if err != nil {
return nil, fmt.Errorf("get freight: %w", err)
}
if freight == nil {
if freightName != "" {
err = fmt.Errorf("freight %q not found in namespace %q", freightName, project)
} else {
err = fmt.Errorf("freight with alias %q not found in namespace %q", freightAlias, project)
}
return nil, connect.NewError(connect.CodeNotFound, err)
}
upstreamStages := make([]string, len(stage.Spec.Subscriptions.UpstreamStages))
for i, upstreamStage := range stage.Spec.Subscriptions.UpstreamStages {
upstreamStages[i] = upstreamStage.Name
}
if !s.isFreightAvailableFn(freight, stage.Name, upstreamStages) {
return nil, connect.NewError(
connect.CodeInvalidArgument,
fmt.Errorf(
"Freight %q is not available to Stage %q",
freightName,
stageName,
),
)
}
if err := s.authorizeFn(
ctx,
"promote",
schema.GroupVersionResource{
Group: kargoapi.GroupVersion.Group,
Version: kargoapi.GroupVersion.Version,
Resource: "stages",
},
"",
types.NamespacedName{
Namespace: project,
Name: stageName,
},
); err != nil {
return nil, err
}
promotion := kargo.NewPromotion(*stage, freight.Name)
if err := s.createPromotionFn(ctx, &promotion); err != nil {
return nil, fmt.Errorf("create promotion: %w", err)
}
return connect.NewResponse(&svcv1alpha1.PromoteToStageResponse{
Promotion: &promotion,
}), nil
}