Struct ShardLayoutV0

pub struct ShardLayoutV0 {
    pub num_shards: u64,
    pub version: u32,
}

A shard layout that maps accounts evenly across all shards – by calculate the hash of account id and mod number of shards. This is added to capture the old account_id_to_shard_id algorithm, to keep backward compatibility for some existing tests. parent_shards for ShardLayoutV1 is always None, meaning it can only be the first shard layout a chain uses.

JSON schema

{
 "description": "A shard layout that maps accounts evenly across all shards -- by calculate the hash of account\n id and mod number of shards. This is added to capture the old `account_id_to_shard_id` algorithm,\n to keep backward compatibility for some existing tests.\n `parent_shards` for `ShardLayoutV1` is always `None`, meaning it can only be the first shard layout\n a chain uses.",
 "type": "object",
 "required": [
   "num_shards",
   "version"
 ],
 "properties": {
   "num_shards": {
     "description": "Map accounts evenly across all shards",
     "type": "integer",
     "format": "uint64",
     "minimum": 0.0
   },
   "version": {
     "description": "Version of the shard layout, this is useful for uniquely identify the shard layout",
     "type": "integer",
     "format": "uint32",
     "minimum": 0.0
   }
 }
}

Fields

num_shards: u64

Map accounts evenly across all shards

version: u32

Version of the shard layout, this is useful for uniquely identify the shard layout

Trait Implementations

impl Clone for ShardLayoutV0

fn clone(&self) -> ShardLayoutV0

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ShardLayoutV0

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ShardLayoutV0

fn deserialize<__D>( __deserializer: __D, ) -> Result<ShardLayoutV0, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<&ShardLayoutV0> for ShardLayoutV0

fn from(value: &ShardLayoutV0) -> ShardLayoutV0

Converts to this type from the input type.

impl From<ShardLayoutV0> for ShardLayout

fn from(value: ShardLayoutV0) -> ShardLayout

Converts to this type from the input type.

impl Serialize for ShardLayoutV0

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

where __S: Serializer,

Serialize this value into the given Serde serializer.