Enum ControlDirective 

pub enum ControlDirective {
    DisableForeignKeys,
    EnableForeignKeys,
    SyncSequences,
}

Control directive for coordinating producer/receiver behavior.

Control directives are sent as special batches to signal the receiver to perform administrative operations like disabling/enabling constraints.

Variants

DisableForeignKeys

Disable foreign key constraints on the target. The receiver should:

1. Query all FK constraints
2. Store definitions in _scry_admin.foreign_keys
3. Drop all FK constraints

EnableForeignKeys

Enable foreign key constraints on the target. The receiver should:

1. Read FK definitions from _scry_admin.foreign_keys
2. Recreate all FK constraints
3. Clean up the admin table

SyncSequences

Synchronize sequence values. The batch will contain sequence_values with the current state.

Trait Implementations

impl Clone for ControlDirective

fn clone(&self) -> ControlDirective

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ControlDirective

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ControlDirective

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ControlDirective

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

Formats the value using the given formatter.

impl Hash for ControlDirective

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ControlDirective

fn eq(&self, other: &ControlDirective) -> 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 ControlDirective

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for ControlDirective

impl Eq for ControlDirective

impl StructuralPartialEq for ControlDirective