fix: Make get_block_storage_changes public (#214)

* fix: Make get_block_storage_changes public

* Make RpcTraceData caller optional

* feat: Create function to decode list of addresses

substreams/crates/tycho-substreams/src/attributes.rs

@@ -1,3 +1,4 @@
+use serde_json::Value;
 use std::fmt::Debug;
 use substreams::prelude::BigInt;
 
@@ -29,6 +30,26 @@ pub fn json_serialize_address_list(addresses: &[Vec<u8>]) -> Vec<u8> {
     )
 }
 
+/// Decodes a JSON-encoded list of 0x-prefixed hex strings into a list of addresses (in byte
+/// representation). This function is the inverse of `json_serialize_address_list`.
+///
+/// ## Panics
+/// Panics if the input is not valid JSON, not an array, or contains invalid hex strings.
+pub fn json_deserialize_address_list(json_bytes: &[u8]) -> Vec<Vec<u8>> {
+    let value: Value =
+        serde_json::from_slice(json_bytes).expect("Failed to parse JSON for address list");
+    value
+        .as_array()
+        .expect("Expected a JSON array")
+        .iter()
+        .map(|v| {
+            let s = v.as_str().expect("Expected a string");
+            let s = s.strip_prefix("0x").unwrap_or(s);
+            hex::decode(s).expect("Invalid hex in address list")
+        })
+        .collect()
+}
+
 /// Encodes a list of BigInt values into json.
 ///
 /// Converts each integer to a 0x prefixed hex string and then serializes

substreams/crates/tycho-substreams/src/block_storage.rs

@@ -23,7 +23,7 @@ use crate::{
 /// ## Warning
 /// ⚠️ This function *only* works if the **extended block model** is available,
 /// more [here](https://streamingfastio.medium.com/new-block-model-to-accelerate-chain-integration-9f65126e5425)
-fn get_block_storage_changes(block: &eth::v2::Block) -> Vec<TransactionStorageChanges> {
+pub fn get_block_storage_changes(block: &eth::v2::Block) -> Vec<TransactionStorageChanges> {
     if block.detail_level != Into::<i32>::into(DetailLevel::DetaillevelExtended) {
         panic!("Only extended blocks are supported");
     }

substreams/crates/tycho-substreams/src/pb/tycho.evm.v1.rs

@@ -226,8 +226,8 @@ pub mod entry_point_params {
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct RpcTraceData {
     /// \[optional\] The caller to be used for the trace. If none is provided a chain default will be used.
-    #[prost(bytes="vec", tag="1")]
-    pub caller: ::prost::alloc::vec::Vec<u8>,
+    #[prost(bytes="vec", optional, tag="1")]
+    pub caller: ::core::option::Option<::prost::alloc::vec::Vec<u8>>,
     /// The calldata to be used for the trace
     #[prost(bytes="vec", tag="2")]
     pub calldata: ::prost::alloc::vec::Vec<u8>,