Struct exonum::runtime::migrations::InstanceMigration

#[non_exhaustive]pub struct InstanceMigration {
    pub target: ArtifactId,
    pub end_version: Version,
    pub completed_hash: Option<Hash>,
}

Information about a migration of a service instance.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

target: ArtifactId

Migration target to obtain migration scripts from. This artifact must be deployed on the blockchain.

end_version: Version

Version of the instance data after the migration is completed. Note that it does not necessarily match the version of target, but should be not greater.

completed_hash: Option<Hash>

Consensus-wide outcome of the migration, in the form of the aggregation hash of the migrated data. The lack of value signifies that the network has not yet reached consensus about the migration outcome.

Methods

impl InstanceMigration

pub fn is_completed(&self) -> bool

Checks if the migration is considered completed, i.e., has migration state agreed among all nodes in the blockchain network.

Trait Implementations

impl BinaryValue for InstanceMigration

fn to_bytes(&self) -> Vec<u8>

Serializes the given value to the vector of bytes.

fn from_bytes(value: Cow<[u8]>) -> Result<Self, Error>

Deserializes the value from the given bytes array.

fn into_bytes(self) -> Vec<u8>

Consumes and serializes the given value to the vector of bytes. This method is faster with the wrapped values, thus if you wouldn't use value after serialization use it.

impl Clone for InstanceMigration

fn clone(&self) -> InstanceMigration

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for InstanceMigration

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for InstanceMigration

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

Deserialize this value from the given Serde deserializer.

impl Hash for InstanceMigration

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, 

Feeds a slice of this type into the given [Hasher].

impl PartialEq<InstanceMigration> for InstanceMigration

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl ProtobufConvert for InstanceMigration

type ProtoStruct = InstanceMigration

Type generated from the Protobuf definition.

fn from_pb(pb: Self::ProtoStruct) -> Result<Self, Error>

Performs conversion from the type generated from Protobuf.

fn to_pb(&self) -> Self::ProtoStruct

Performs conversion to the type generated from Protobuf.

impl Serialize for InstanceMigration

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 InstanceMigration