package types import ( "fmt" acm "github.com/tendermint/tendermint/account" "strings" ) type NodeInfo struct { PubKey acm.PubKeyEd25519 `json:"pub_key"` Moniker string `json:"moniker"` ChainID string `json:"chain_id"` Version string `json:"version"` Revision string `json:"revision"` Host string `json:"host"` P2PPort uint16 `json:"p2p_port"` RPCPort uint16 `json:"rpc_port"` } func (ni *NodeInfo) CompatibleWith(no *NodeInfo) error { iM, im, _, ie := splitVersion(ni.Version) oM, om, _, oe := splitVersion(no.Version) // if our own version number is not formatted right, we messed up if ie != nil { return ie } // version number must be formatted correctly ("x.x.x") if oe != nil { return oe } // major version must match if iM != oM { return fmt.Errorf("Peer is on a different major version. Got %v, expected %v", oM, iM) } // minor version must match if im != om { return fmt.Errorf("Peer is on a different minor version. Got %v, expected %v", om, im) } // nodes must be on the same chain_id if ni.ChainID != no.ChainID { return fmt.Errorf("Peer is on a different chain_id. Got %v, expected %v", no.ChainID, ni.ChainID) } return nil } func splitVersion(version string) (string, string, string, error) { spl := strings.Split(version, ".") if len(spl) != 3 { return "", "", "", fmt.Errorf("Invalid version format %v", version) } return spl[0], spl[1], spl[2], nil }