146 lines
3.5 KiB
Go
146 lines
3.5 KiB
Go
package layer
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import (
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"bytes"
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"context"
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"encoding/xml"
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"io"
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"github.com/google/uuid"
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"github.com/nspcc-dev/neofs-s3-gw/api/data"
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"github.com/nspcc-dev/neofs-s3-gw/api/errors"
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"go.uber.org/zap"
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)
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type (
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PutBucketNotificationConfigurationParams struct {
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BktInfo *data.BucketInfo
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Reader io.Reader
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}
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)
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func (n *layer) PutBucketNotificationConfiguration(ctx context.Context, p *PutBucketNotificationConfigurationParams) error {
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if !n.IsNotificationEnabled() {
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return errors.GetAPIError(errors.ErrNotificationNotEnabled)
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}
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var (
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buf bytes.Buffer
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tee = io.TeeReader(p.Reader, &buf)
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conf = &data.NotificationConfiguration{}
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completed bool
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err error
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)
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if err = xml.NewDecoder(tee).Decode(conf); err != nil {
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return errors.GetAPIError(errors.ErrMalformedXML)
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}
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if completed, err = n.checkAndCompleteNotificationConfiguration(conf); err != nil {
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return err
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}
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if completed {
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confXML, err := xml.Marshal(conf)
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if err != nil {
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return err
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}
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buf.Reset()
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buf.Write(confXML)
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}
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s := &PutSystemObjectParams{
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BktInfo: p.BktInfo,
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ObjName: p.BktInfo.NotificationConfigurationObjectName(),
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Metadata: map[string]string{},
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Prefix: "",
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Reader: &buf,
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}
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obj, err := n.putSystemObjectIntoNeoFS(ctx, s)
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if err != nil {
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return err
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}
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if obj.Size == 0 && !conf.IsEmpty() {
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return errors.GetAPIError(errors.ErrInternalError)
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}
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if err = n.systemCache.PutNotificationConfiguration(systemObjectKey(p.BktInfo, s.ObjName), conf); err != nil {
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n.log.Error("couldn't cache system object", zap.Error(err))
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}
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return nil
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}
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func (n *layer) GetBucketNotificationConfiguration(ctx context.Context, bktInfo *data.BucketInfo) (*data.NotificationConfiguration, error) {
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if !n.IsNotificationEnabled() {
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return nil, errors.GetAPIError(errors.ErrNotificationNotEnabled)
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}
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conf, err := n.getNotificationConf(ctx, bktInfo, bktInfo.NotificationConfigurationObjectName())
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if err != nil {
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if errors.IsS3Error(err, errors.ErrNoSuchKey) {
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return &data.NotificationConfiguration{}, nil
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}
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return nil, err
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}
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return conf, nil
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}
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func (n *layer) getNotificationConf(ctx context.Context, bkt *data.BucketInfo, sysName string) (*data.NotificationConfiguration, error) {
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if conf := n.systemCache.GetNotificationConfiguration(systemObjectKey(bkt, sysName)); conf != nil {
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return conf, nil
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}
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obj, err := n.getSystemObjectFromNeoFS(ctx, bkt, sysName)
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if err != nil {
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return nil, err
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}
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conf := &data.NotificationConfiguration{}
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if err = xml.Unmarshal(obj.Payload(), &conf); err != nil {
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return nil, err
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}
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if err = n.systemCache.PutNotificationConfiguration(systemObjectKey(bkt, sysName), conf); err != nil {
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n.log.Warn("couldn't put system meta to objects cache",
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zap.Stringer("object id", obj.ID()),
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zap.Stringer("bucket id", bkt.CID),
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zap.Error(err))
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}
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return conf, nil
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}
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func (n *layer) checkAndCompleteNotificationConfiguration(c *data.NotificationConfiguration) (completed bool, err error) {
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if c == nil {
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return
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}
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if c.TopicConfigurations != nil || c.LambdaFunctionConfigurations != nil {
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return completed, errors.GetAPIError(errors.ErrNotificationTopicNotSupported)
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}
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for i, q := range c.QueueConfigurations {
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if err = checkEvents(q.Events); err != nil {
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return
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}
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if q.ID == "" {
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completed = true
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c.QueueConfigurations[i].ID = uuid.NewString()
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}
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}
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return
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}
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func checkEvents(events []string) error {
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for _, e := range events {
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if _, ok := data.ValidEvents[e]; !ok {
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return errors.GetAPIError(errors.ErrEventNotification)
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}
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}
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return nil
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}
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