func (m *DB) putMapItem(tx *bolt.Tx, mi common.MapItem) error {
// extract key and value bytes.
k := mi.Key()
if k == nil {
// all MapItems must have own EndnodeAddress.
return common.ErrNoEndnodeAddress
}
v, err := m.marshalMapItem(mi)
if err != nil {
return err
}
// put an item into core bucket.
items := tx.Bucket([]byte(boltItemBucket))
items.Put(k, v)
// get pendings bucket.
pendings := tx.Bucket([]byte(boltPendingBucket))
// put it to cloud bucket if CloudAddress is available.
ck := mi.CloudKey()
if ck != nil {
if pendings.Get(k) != nil {
if err := pendings.Delete(k); err != nil {
return err
}
}
cloud := tx.Bucket([]byte(boltCloudBucket))
return cloud.Put(ck, k)
}
// otherwise put it to pendings bucket.
if pendings.Get(k) == nil {
return pendings.Put(k, k)
}
return nil
}
// UpdateEndnode updates EndnodeAddress for an existing end-node.
func (m *DB) UpdateEndnode(newEA common.EndnodeAddress, caddr common.CloudAddress) (common.MapItem, error) {
var item common.MapItem
err := m.db.Update(func(tx *bolt.Tx) (err error) {
//find mapItem with cloud address
item, err = m.FindByCloudAddress(caddr)
if err != nil {
return err
}
//delete mapItem from bucket
err = m.deleteMapItem(tx, item.Key())
if err != nil {
return err
}
//insert mapItem with new endnode address
item.EndnodeAddress = &newEA
return m.putMapItem(tx, item)
})
if err != nil {
return common.MapItem{}, err
}
return item, nil
}