Endpoint for rewarded set inclusion probabilities (#1042)

* Add validator-api endpoint

* Add validator-client method

* Make it a bit nicer

* Address review comments

* Cap probability at 1.

common/client-libs/validator-client/src/validator_api/mod.rs

@@ -6,6 +6,7 @@ use crate::validator_api::routes::{CORE_STATUS_COUNT, SINCE_ARG};
 use coconut_interface::{BlindSignRequestBody, BlindedSignatureResponse, VerificationKeyResponse};
 use mixnet_contract_common::{GatewayBond, IdentityKeyRef, MixNodeBond};
 use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
 use url::Url;
 use validator_api_requests::models::{
     CoreNodeStatusResponse, MixnodeStatusResponse, RewardEstimationResponse,
@@ -101,6 +102,23 @@ impl Client {
         .await
     }
 
+    pub async fn get_probs_mixnode_rewarded(
+        &self,
+        mixnode_id: &str,
+    ) -> Result<HashMap<String, f32>, ValidatorAPIError> {
+        self.query_validator_api(
+            &[
+                routes::API_VERSION,
+                routes::MIXNODES,
+                routes::REWARDED,
+                routes::INCLUSION_CHANCE,
+                &mixnode_id.to_string(),
+            ],
+            NO_PARAMS,
+        )
+        .await
+    }
+
     pub async fn get_gateway_core_status_count(
         &self,
         identity: IdentityKeyRef<'_>,

common/client-libs/validator-client/src/validator_api/routes.rs

@@ -23,3 +23,4 @@ pub const SINCE_ARG: &str = "since";
 pub const STATUS: &str = "status";
 pub const REWARD_ESTIMATION: &str = "reward-estimation";
 pub const STAKE_SATURATION: &str = "stake-saturation";
+pub const INCLUSION_CHANCE: &str = "inclusion-probability";