Reveal and settle to receive integer solution id

crates/driver/src/infra/api/routes/mod.rs

@@ -15,3 +15,34 @@ pub(super) use {
     settle::settle,
     solve::{solve, AuctionError},
 };
+
+pub fn deserialize_solution_id<'de, D>(deserializer: D) -> Result<u64, D::Error>
+where
+    D: serde::Deserializer<'de>,
+{
+    struct SolutionIdVisitor;
+
+    impl serde::de::Visitor<'_> for SolutionIdVisitor {
+        type Value = u64;
+
+        fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
+            formatter.write_str("a string or integer representing a solution ID")
+        }
+
+        fn visit_u64<E>(self, value: u64) -> Result<u64, E>
+        where
+            E: serde::de::Error,
+        {
+            Ok(value)
+        }
+
+        fn visit_str<E>(self, value: &str) -> Result<u64, E>
+        where
+            E: serde::de::Error,
+        {
+            value.parse::<u64>().map_err(serde::de::Error::custom)
+        }
+    }
+
+    deserializer.deserialize_any(SolutionIdVisitor)
+}

crates/driver/src/infra/api/routes/reveal/dto/solution.rs

@@ -1,11 +1,11 @@
-use {serde::Deserialize, serde_with::serde_as};
+use {super::super::super::deserialize_solution_id, serde::Deserialize, serde_with::serde_as};
 
 #[serde_as]
 #[derive(Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct Solution {
     /// Unique ID of the solution (per driver competition), to reveal.
-    #[serde_as(as = "serde_with::DisplayFromStr")]
+    #[serde(deserialize_with = "deserialize_solution_id")]
     pub solution_id: u64,
     /// Auction ID in which the specified solution ID is competing.
     #[serde_as(as = "Option<serde_with::DisplayFromStr>")]

crates/driver/src/infra/api/routes/settle/dto/solution.rs

@@ -1,11 +1,11 @@
-use {serde::Deserialize, serde_with::serde_as};
+use {super::super::super::deserialize_solution_id, serde::Deserialize, serde_with::serde_as};
 
 #[serde_as]
 #[derive(Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct Solution {
     /// Unique ID of the solution (per driver competition), to settle.
-    #[serde_as(as = "serde_with::DisplayFromStr")]
+    #[serde(deserialize_with = "deserialize_solution_id")]
     pub solution_id: u64,
     /// The last block number in which the solution TX can be included
     pub submission_deadline_latest_block: u64,