Struct MerkleNode 

pub struct MerkleNode {
    pub cid: Hash,
    pub parents: Vec<Hash>,
    pub payload: Payload,
    pub timestamp: u64,
    pub creator: String,
}

A node in the Merkle-DAG representing a causal event.

The node’s CID is computed from its contents, making it content-addressed and tamper-proof. Any change to the node’s data would change its CID.

Fields

cid: Hash

Content identifier - SHA-256 hash of the node’s contents. This is computed when the node is built.

parents: Vec<Hash>

Hashes of parent nodes (causal predecessors). Empty for genesis nodes.

payload: Payload

The payload carried by this node.

timestamp: u64

Logical timestamp (monotonically increasing per replica).

creator: String

The replica that created this node.

Implementations

impl MerkleNode

pub fn is_genesis(&self) -> bool

Check if this is a genesis node.

pub fn has_parent(&self, cid: &Hash) -> bool

Check if this node is a descendant of another (has it as ancestor). Note: This only checks direct parents, not transitive ancestry.

pub fn parent_count(&self) -> usize

Get the number of parents (branching factor for this node).

fn compute_cid( parents: &[Hash], payload: &Payload, timestamp: u64, creator: &str, ) -> Hash

Compute the CID for a node with the given contents. This is used by the builder to generate the CID.

pub fn verify(&self) -> bool

Verify that the CID matches the node’s contents.

Trait Implementations

impl Clone for MerkleNode

fn clone(&self) -> MerkleNode

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MerkleNode

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MerkleNode

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for MerkleNode

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for MerkleNode

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for MerkleNode

impl StructuralPartialEq for MerkleNode