Add function to retrieve perpetual asset contexts

src/bin/info.rs

@@ -12,6 +12,7 @@ async fn main() {
     user_states_example(&info_client).await;
     recent_trades(&info_client).await;
     meta_example(&info_client).await;
+    meta_and_asset_contexts_example(&info_client).await;
     all_mids_example(&info_client).await;
     user_fills_example(&info_client).await;
     funding_history_example(&info_client).await;
@@ -68,6 +69,13 @@ async fn meta_example(info_client: &InfoClient) {
     info!("Metadata: {:?}", info_client.meta().await.unwrap());
 }
 
+async fn meta_and_asset_contexts_example(info_client: &InfoClient) {
+    info!(
+        "MetaAndAssetContexts: {:?}",
+        info_client.meta_and_asset_contexts().await.unwrap()
+    );
+}
+
 async fn all_mids_example(info_client: &InfoClient) {
     info!("All mids: {:?}", info_client.all_mids().await.unwrap());
 }

src/info/info_client.rs

@@ -1,7 +1,7 @@
 use crate::{
     info::{
         CandlesSnapshotResponse, FundingHistoryResponse, L2SnapshotResponse, OpenOrdersResponse,
-        RecentTradesResponse, UserFillsResponse, UserStateResponse,
+        RecentTradesResponse, UserFillsResponse, UserStateResponse, MetaAndAssetContexts
     },
     meta::{Meta, SpotMeta},
     prelude::*,
@@ -41,6 +41,7 @@ pub enum InfoRequest {
         user: H160,
     },
     Meta,
+    MetaAndAssetCtxs,
     SpotMeta,
     AllMids,
     UserFills {
@@ -147,6 +148,14 @@ impl InfoClient {
         serde_json::from_str(&return_data).map_err(|e| Error::JsonParse(e.to_string()))
     }
 
+    pub async fn meta_and_asset_contexts(&self) -> Result<Vec<MetaAndAssetContexts>> {
+        let input = InfoRequest::MetaAndAssetCtxs;
+        let data = serde_json::to_string(&input).map_err(|e| Error::JsonParse(e.to_string()))?;
+
+        let return_data = self.http_client.post("/info", data).await?;
+        serde_json::from_str(&return_data).map_err(|e| Error::JsonParse(e.to_string()))
+    }
+
     pub async fn spot_meta(&self) -> Result<SpotMeta> {
         let input = InfoRequest::SpotMeta;
         let data = serde_json::to_string(&input).map_err(|e| Error::JsonParse(e.to_string()))?;

src/info/response_structs.rs

@@ -1,4 +1,4 @@
-use crate::info::{AssetPosition, Level, MarginSummary};
+use crate::{info::{AssetPosition, Level, MarginSummary}, meta::Meta};
 use serde::Deserialize;
 
 #[derive(Deserialize, Debug)]
@@ -88,3 +88,23 @@ pub struct CandlesSnapshotResponse {
     #[serde(rename = "n")]
     pub num_trades: u64,
 }
+
+#[derive(Deserialize, Debug, Clone)]
+#[serde(untagged)]
+pub enum MetaAndAssetContexts {
+    Meta(Meta),
+    Context(Vec<AssetContext>),
+}
+#[derive(Deserialize, Debug, Clone)]
+#[serde(rename_all = "camelCase")]
+pub struct AssetContext {
+    pub day_ntl_vlm: String,
+    pub funding: String,
+    pub impact_pxs: Option<Vec<String>>,
+    pub mark_px: String,
+    pub mid_px: Option<String>,
+    pub open_interest: String,
+    pub oracle_px: String,
+    pub premium: Option<String>,
+    pub prev_day_px: String,
+}