status-im/status-go

package requests

import (
    "errors"

    "github.com/status-im/status-go/eth-node/types"
    "github.com/status-im/status-go/protocol/common/shard"
)

type SetCommunityShard struct {
    CommunityID types.HexBytes  `json:"communityId"`
    Shard       *shard.Shard    `json:"shard,omitempty"`
    PrivateKey  *types.HexBytes `json:"privateKey,omitempty"`
}

func (s *SetCommunityShard) Validate() error {
    if s == nil {
        return errors.New("invalid request")
    }
    if s.Shard != nil {
        // TODO: for now only MainStatusShard(16) is accepted
        if s.Shard.Cluster != shard.MainStatusShardCluster {
            return errors.New("invalid shard cluster")
        }
        if s.Shard.Index > 1023 {
            return errors.New("invalid shard index. Only 0-1023 is allowed")
        }
    }
    return nil
}