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Copy pathmetadata.go
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158 lines (129 loc) · 3.56 KB
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package alert
import (
"context"
"database/sql"
"encoding/json"
"errors"
"github.com/sqlc-dev/pqtype"
"github.com/target/goalert/gadb"
"github.com/target/goalert/permission"
"github.com/target/goalert/validation"
"github.com/target/goalert/validation/validate"
)
const metaV1 = "alert_meta_v1"
type metadataDBFormat struct {
Type string
AlertMetaV1 map[string]string
}
// Metadata returns the metadata for a single alert. If err == nil, meta is guaranteed to be non-nil. If the alert has no metadata, an empty map is returned.
func (s *Store) Metadata(ctx context.Context, db gadb.DBTX, alertID int) (meta map[string]string, err error) {
err = permission.LimitCheckAny(ctx, permission.System, permission.User)
if err != nil {
return nil, err
}
md, err := gadb.New(db).Alert_GetAlertMetadata(ctx, int64(alertID))
if errors.Is(err, sql.ErrNoRows) || !md.Valid {
return map[string]string{}, nil
}
if err != nil {
return nil, err
}
var doc metadataDBFormat
err = json.Unmarshal(md.RawMessage, &doc)
if err != nil {
return nil, err
}
if doc.Type != metaV1 || doc.AlertMetaV1 == nil {
return nil, errors.New("unsupported metadata type")
}
return doc.AlertMetaV1, nil
}
type MetadataAlertID struct {
// AlertID is the ID of the alert.
ID int64
Meta map[string]string
}
func (s Store) FindManyMetadata(ctx context.Context, db gadb.DBTX, alertIDs []int) ([]MetadataAlertID, error) {
err := permission.LimitCheckAny(ctx, permission.System, permission.User)
if err != nil {
return nil, err
}
err = validate.Range("AlertIDs", len(alertIDs), 1, maxBatch)
if err != nil {
return nil, err
}
ids := make([]int64, len(alertIDs))
for i, id := range alertIDs {
ids[i] = int64(id)
}
rows, err := gadb.New(db).Alert_GetAlertManyMetadata(ctx, ids)
if errors.Is(err, sql.ErrNoRows) {
return nil, nil
}
if err != nil {
return nil, err
}
res := make([]MetadataAlertID, len(rows))
for i, r := range rows {
var doc metadataDBFormat
err = json.Unmarshal(r.Metadata.RawMessage, &doc)
if err != nil {
return nil, err
}
if doc.Type != metaV1 || doc.AlertMetaV1 == nil {
return nil, errors.New("unsupported metadata type")
}
res[i] = MetadataAlertID{
ID: r.AlertID,
Meta: doc.AlertMetaV1,
}
}
return res, nil
}
func (s Store) SetMetadataTx(ctx context.Context, db gadb.DBTX, alertID int, meta map[string]string) error {
err := permission.LimitCheckAny(ctx, permission.User, permission.Service)
if err != nil {
return err
}
err = ValidateMetadata(meta)
if err != nil {
return err
}
var doc metadataDBFormat
doc.Type = metaV1
doc.AlertMetaV1 = meta
md, err := json.Marshal(&doc)
if err != nil {
return err
}
rowCount, err := gadb.New(db).Alert_SetAlertMetadata(ctx, gadb.Alert_SetAlertMetadataParams{
ID: int64(alertID),
ServiceID: permission.ServiceNullUUID(ctx), // only provide service_id restriction if request is from a service
Metadata: pqtype.NullRawMessage{Valid: true, RawMessage: json.RawMessage(md)},
})
if err != nil {
return err
}
if rowCount == 0 {
// shouldn't happen, but just in case
return permission.NewAccessDenied("alert closed, invalid, or wrong service")
}
return nil
}
func ValidateMetadata(m map[string]string) error {
if m == nil {
return validation.NewFieldError("Meta", "cannot be nil")
}
var totalSize int
for k, v := range m {
err := validate.ASCII("Meta[<key>]", k, 1, 255)
if err != nil {
return err
}
totalSize += len(k) + len(v)
}
if totalSize > 32768 {
return validation.NewFieldError("Meta", "cannot exceed 32KiB in size")
}
return nil
}