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Add special genesis state API endpoint

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This commit is contained in:
Paul Hauner
2019-09-02 15:07:48 +10:00
parent 11a1505784
commit bfbe776712
4 changed files with 49 additions and 3 deletions
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15
beacon_node/rest_api/src/beacon.rs
View File

@@ -101,6 +101,21 @@ pub fn get_block_root<T: BeaconChainTypes + 'static>(req: Request<Body>) -> ApiR
Ok(success_response(Body::from(json)))
}
/// HTTP handler to return a `BeaconState` at a given `root` or `slot`.
///
/// Will not return a state if the request slot is in the future. Will return states higher than
/// the current head by skipping slots.
pub fn get_genesis_state<T: BeaconChainTypes + 'static>(req: Request<Body>) -> ApiResult {
let beacon_chain = req
.extensions()
.get::<Arc<BeaconChain<T>>>()
.ok_or_else(|| ApiError::ServerError("Beacon chain extension missing".to_string()))?;
let (_root, state) = state_at_slot(&beacon_chain, Slot::new(0))?;
ResponseBuilder::new(&req).body(&state)
}
#[derive(Serialize, Encode)]
#[serde(bound = "T: EthSpec")]
pub struct StateResponse<T: EthSpec> {

1
beacon_node/rest_api/src/lib.rs
View File

@@ -147,6 +147,7 @@ pub fn start_server<T: BeaconChainTypes>(
beacon::get_latest_finalized_checkpoint::<T>(req)
}
(&Method::GET, "/beacon/state") => beacon::get_state::<T>(req),
(&Method::GET, "/beacon/state/genesis") => beacon::get_genesis_state::<T>(req),
(&Method::GET, "/beacon/state_root") => beacon::get_state_root::<T>(req),
//TODO: Add aggreggate/filtered state lookups here, e.g. /beacon/validators/balances