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package lite
import (
"fmt"
"time"
"github.com/tendermint/tendermint/lite2/provider"
"github.com/tendermint/tendermint/types"
)
// ErrOldHeaderExpired means the old (trusted) header has expired according to
// the given trustingPeriod and current time. If so, the light client must be
// reset subjectively.
type ErrOldHeaderExpired struct {
At time.Time
Now time.Time
}
func (e ErrOldHeaderExpired) Error() string {
return fmt.Sprintf("old header has expired at %v (now: %v)", e.At, e.Now)
}
// ErrNewValSetCantBeTrusted means the new validator set cannot be trusted
// because < 1/3rd (+trustLevel+) of the old validator set has signed.
type ErrNewValSetCantBeTrusted struct {
Reason types.ErrNotEnoughVotingPowerSigned
}
func (e ErrNewValSetCantBeTrusted) Error() string {
return fmt.Sprintf("cant trust new val set: %v", e.Reason)
}
// ErrInvalidHeader means the header either failed the basic validation or
// commit is not signed by 2/3+.
type ErrInvalidHeader struct {
Reason error
}
func (e ErrInvalidHeader) Error() string {
return fmt.Sprintf("invalid header: %v", e.Reason)
}
// ErrConflictingHeaders is thrown when two conflicting headers are discovered.
type ErrConflictingHeaders struct {
H1 *types.SignedHeader
Primary provider.Provider
H2 *types.SignedHeader
Witness provider.Provider
}
func (e ErrConflictingHeaders) Error() string {
return fmt.Sprintf(
"header hash %X from primary %v does not match one %X from witness %v",
e.H1.Hash(), e.Primary,
e.H2.Hash(), e.Witness)
}
// errNoWitnesses means that there are not enough witnesses connected to
// continue running the light client.
type errNoWitnesses struct{}
func (e errNoWitnesses) Error() string {
return "no witnesses connected. please reset light client"
}