Enum WalDelta 

pub enum WalDelta {
    CreateInode {
        delta_index: u32,
        inode_id: InodeId,
        inode_kind: InodeKind,
    },
    BindDirentry {
        delta_index: u32,
        parent_inode_id: InodeId,
        name_key: NameKey,
        display_name: DisplayName,
        child_inode_id: InodeId,
    },
    UnbindDirentry {
        delta_index: u32,
        parent_inode_id: InodeId,
        name_key: NameKey,
        display_name: DisplayName,
        child_inode_id: InodeId,
        bind_seq: ChangeSeq,
        bind_delta_index: u32,
    },
    AppendFileRevision {
        delta_index: u32,
        inode_id: InodeId,
        revision_no: RevisionNo,
        content_ref: ContentRef,
    },
    TombstoneSubtree {
        delta_index: u32,
        root_inode_id: InodeId,
        deleted_direntry: Option<DeletedDirentry>,
    },
    RevokeSubtreeTombstone {
        delta_index: u32,
        root_inode_id: InodeId,
        target: TombstoneGeneration,
    },
    AppendAttributesRevision {
        delta_index: u32,
        inode_id: InodeId,
        attributes_revision_no: AttributeRevisionNo,
        attributes: Attributes,
    },
}

Records one replayable metadata mutation materialized from a semantic commit operation.

See standard mutation operations.

Variants

CreateInode

Introduces an inode whose identity and kind remain fixed for its lifetime.

Fields

delta_index: u32

Stable position of this delta within its commit, used in row ordering and identity.

inode_id: InodeId

Newly allocated durable inode identity.

inode_kind: InodeKind

File-or-directory classification established at creation.

BindDirentry

Makes a child reachable under one canonical name in a directory.

Fields

delta_index: u32

Stable position of this delta within its commit, used to identify the binding.

parent_inode_id: InodeId

Directory receiving the new name binding.

name_key: NameKey

Policy-derived lookup key on which directory uniqueness is enforced.

display_name: DisplayName

User-facing spelling preserved independently of name_key.

child_inode_id: InodeId

Inode made reachable by the binding.

UnbindDirentry

Removes one exact historical directory binding without affecting a later rebind.

Fields

delta_index: u32

Stable position of this unbind within its commit.

parent_inode_id: InodeId

Directory from which the binding is removed.

name_key: NameKey

Canonical lookup key of the binding being removed.

display_name: DisplayName

User-facing spelling the removed binding carried, so feed consumers see the name a person typed without a second lookup.

child_inode_id: InodeId

Child identity expected on the targeted binding.

bind_seq: ChangeSeq

Commit sequence that created the exact binding being removed.

bind_delta_index: u32

Delta position that disambiguates the binding within bind_seq.

AppendFileRevision

Publishes the next immutable content revision of a file inode.

Fields

delta_index: u32

Stable position of this revision delta within its commit.

inode_id: InodeId

File inode receiving the revision.

revision_no: RevisionNo

Monotonic per-file revision number validated against visible history.

content_ref: ContentRef

Immutable content that must already be durable before publication.

TombstoneSubtree

Hides a rooted subtree from snapshots at this delta’s sequence or later.

Fields

delta_index: u32

Stable position that identifies this tombstone within its commit.

root_inode_id: InodeId

Inode at the root of the newly hidden subtree.

deleted_direntry: Option<DeletedDirentry>

The binding a path delete removed, carried so the deleted name survives on the immortal tombstone row after unbind rows age out; null for a delete addressed by inode. Stated either way and never defaulted, so the pre-grouping layout — which spelled the binding as three optional delta fields — does not decode.

RevokeSubtreeTombstone

Revokes exactly one subtree tombstone — the one recorded at target — making the subtree eligible for visibility again once re-bound. An immutable compensating event, not an in-place row deletion: a later TombstoneSubtree for the same root supersedes the revoke.

Fields

delta_index: u32

Stable position of this compensating delta within its commit.

root_inode_id: InodeId

Root inode whose selected tombstone is being revoked.

target: TombstoneGeneration

The exact tombstone generation this delta compensates.

AppendAttributesRevision

Publishes the next attribute revision of one inode, as complete state.

The delta carries the whole resulting map rather than the changes that produced it, so replay never needs an earlier revision to answer what an inode holds. An empty map is a real revision: it is the cleared state, and it hides every earlier map.

Fields

delta_index: u32

Stable position of this attribute delta within its commit.

inode_id: InodeId

Inode whose attributes this revision replaces.

attributes_revision_no: AttributeRevisionNo

Monotonic per-inode attribute revision, exactly one past the revision the update was validated against.

attributes: Attributes

The inode’s complete attribute map after this update.

Trait Implementations

impl Clone for WalDelta

fn clone(&self) -> WalDelta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WalDelta

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WalDelta

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for WalDelta

impl PartialEq for WalDelta

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for WalDelta

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for WalDelta