Struct diem_types::waypoint::Waypoint

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pub struct Waypoint { /* private fields */ }
Expand description

Waypoint keeps information about the LedgerInfo on a given version, which provides an off-chain mechanism to verify the sync process right after the restart. At high level, a trusted waypoint verifies the LedgerInfo for a certain epoch change. For more information, please refer to the Waypoints documentation.

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impl Waypoint

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pub fn new_any(ledger_info: &LedgerInfo) -> Self

Generate a new waypoint given any LedgerInfo.

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pub fn new_epoch_boundary(ledger_info: &LedgerInfo) -> Result<Self>

Generates a new waypoint given the epoch change LedgerInfo.

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pub fn version(&self) -> Version

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pub fn value(&self) -> HashValue

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pub fn verify(&self, ledger_info: &LedgerInfo) -> Result<()>

Errors in case the given ledger info does not match the waypoint.

Trait Implementations§

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impl Clone for Waypoint

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fn clone(&self) -> Waypoint

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Waypoint

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for Waypoint

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fn default() -> Waypoint

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for Waypoint

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fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Display for Waypoint

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl From<Waypoint> for TrustedState

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fn from(waypoint: Waypoint) -> Self

Converts to this type from the input type.
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impl FromStr for Waypoint

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type Err = Error

The associated error which can be returned from parsing.
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fn from_str(s: &str) -> Result<Self>

Parses a string s to return a value of this type. Read more
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impl PartialEq for Waypoint

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fn eq(&self, other: &Waypoint) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for Waypoint

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Verifier for Waypoint

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fn verify(&self, ledger_info: &LedgerInfoWithSignatures) -> Result<()>

Verify if the ledger_info is trust worthy.
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fn epoch_change_verification_required(&self, _epoch: u64) -> bool

Returns true in case the given epoch is larger than the existing verifier can support. In this case the EpochChangeProof should be verified and the verifier updated.
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fn is_ledger_info_stale(&self, ledger_info: &LedgerInfo) -> bool

Returns true if the given LedgerInfo is stale and probably in our trusted prefix. Read more
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impl Copy for Waypoint

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impl Eq for Waypoint

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impl StructuralPartialEq for Waypoint

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