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package label
import (
"context"
"database/sql"
"fmt"
"github.com/google/uuid"
"github.com/target/goalert/assignment"
"github.com/target/goalert/gadb"
"github.com/target/goalert/permission"
"github.com/target/goalert/validation/validate"
"github.com/pkg/errors"
)
// Store allows the lookup and management of Labels.
type Store struct {
db *sql.DB
}
// NewStore will Set a DB backend from a sql.DB. An error will be returned if statements fail to prepare.
func NewStore(ctx context.Context, db *sql.DB) (*Store, error) { return &Store{db: db}, nil }
// SetTx will set a label for the service. It can be used to set the key-value pair for the label,
// delete a label or update the value given the label's key.
func (s *Store) SetTx(ctx context.Context, db gadb.DBTX, label *Label) error {
err := permission.LimitCheckAny(ctx, permission.System, permission.User)
if err != nil {
return err
}
n, err := label.Normalize()
if err != nil {
return err
}
if n.Value == "" { // delete if value is empty
err = gadb.New(db).LabelDeleteKeyByTarget(ctx, gadb.LabelDeleteKeyByTargetParams{
Key: label.Key,
TgtServiceID: uuid.MustParse(label.Target.TargetID()),
})
if err != nil {
return fmt.Errorf("delete label: %w", err)
}
return nil
}
err = gadb.New(db).LabelSetByTarget(ctx, gadb.LabelSetByTargetParams{
Key: label.Key,
Value: label.Value,
TgtServiceID: uuid.MustParse(label.Target.TargetID()),
})
if err != nil {
return fmt.Errorf("set label: %w", err)
}
return nil
}
// FindAllByService finds all labels for a particular service. It returns all key-value pairs.
func (s *Store) FindAllByService(ctx context.Context, db gadb.DBTX, serviceID string) ([]Label, error) {
err := permission.LimitCheckAny(ctx, permission.System, permission.User)
if err != nil {
return nil, err
}
svc, err := validate.ParseUUID("ServiceID", serviceID)
if err != nil {
return nil, err
}
rows, err := gadb.New(db).LabelFindAllByTarget(ctx, svc)
if errors.Is(err, sql.ErrNoRows) {
return nil, nil
}
if err != nil {
return nil, fmt.Errorf("find all labels by service: %w", err)
}
labels := make([]Label, len(rows))
for i, l := range rows {
labels[i].Key = l.Key
labels[i].Value = l.Value
labels[i].Target = assignment.ServiceTarget(serviceID)
}
return labels, nil
}
func (s *Store) UniqueKeysTx(ctx context.Context, db gadb.DBTX) ([]string, error) {
err := permission.LimitCheckAny(ctx, permission.System, permission.User)
if err != nil {
return nil, err
}
return gadb.New(db).LabelUniqueKeys(ctx)
}
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