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validate.go
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validate.go
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package convert
import (
"strings"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"github.com/onflow/flow-go/model/flow"
)
// Common validation and conversion for incoming Access API requests
// Address validates the input address and returns a Flow address if valid and error otherwise
func Address(rawAddress []byte, chain flow.Chain) (flow.Address, error) {
if len(rawAddress) == 0 {
return flow.EmptyAddress, status.Error(codes.InvalidArgument, "address cannot be empty")
}
address := flow.BytesToAddress(rawAddress)
if !chain.IsValid(address) {
return flow.EmptyAddress, status.Errorf(codes.InvalidArgument, "address %s is invalid for chain %s", address, chain)
}
return address, nil
}
func HexToAddress(hexAddress string, chain flow.Chain) (flow.Address, error) {
if len(hexAddress) == 0 {
return flow.EmptyAddress, status.Error(codes.InvalidArgument, "address cannot be empty")
}
address := flow.HexToAddress(hexAddress)
if !chain.IsValid(address) {
return flow.EmptyAddress, status.Errorf(codes.InvalidArgument, "address %s is invalid for chain %s", address, chain)
}
return address, nil
}
func BlockID(blockID []byte) (flow.Identifier, error) {
if len(blockID) != flow.IdentifierLen {
return flow.ZeroID, status.Error(codes.InvalidArgument, "invalid block id")
}
return flow.HashToID(blockID), nil
}
func BlockIDs(blockIDs [][]byte) ([]flow.Identifier, error) {
if len(blockIDs) == 0 {
return nil, status.Error(codes.InvalidArgument, "empty block ids")
}
flowBlockIDs := make([]flow.Identifier, len(blockIDs))
for i, b := range blockIDs {
flowBlockID, err := BlockID(b)
if err != nil {
return nil, err
}
flowBlockIDs[i] = flowBlockID
}
return flowBlockIDs, nil
}
func CollectionID(collectionID []byte) (flow.Identifier, error) {
if len(collectionID) == 0 {
return flow.ZeroID, status.Error(codes.InvalidArgument, "invalid collection id")
}
return flow.HashToID(collectionID), nil
}
func EventType(eventType string) (string, error) {
if len(strings.TrimSpace(eventType)) == 0 {
return "", status.Error(codes.InvalidArgument, "invalid event type")
}
return eventType, nil
}
func TransactionID(txID []byte) (flow.Identifier, error) {
if len(txID) == 0 {
return flow.ZeroID, status.Error(codes.InvalidArgument, "invalid transaction id")
}
return flow.HashToID(txID), nil
}