fix(balancer_v2): skip adding zero address rate_provider entrypoints (#224)

substreams/ethereum-balancer-v2/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ethereum-balancer-v2"
-version = "0.3.1"
+version = "0.3.2"
 edition = "2021"
 
 [lib]
@@ -15,7 +15,7 @@ hex = "0.4.3"
 anyhow = "1.0.75"
 num-bigint = "0.4.4"
 itertools = "0.12.0"
-tycho-substreams = { git = "https://github.com/propeller-heads/tycho-protocol-sdk.git", rev = "51995f9" }
+tycho-substreams = { git = "https://github.com/propeller-heads/tycho-protocol-sdk.git", tag = "0.4.0" }
 
 [build-dependencies]
 anyhow = "1"

substreams/ethereum-balancer-v2/src/modules.rs

@@ -15,6 +15,7 @@ use tycho_substreams::{
 };
 
 pub const VAULT_ADDRESS: &[u8] = &hex!("BA12222222228d8Ba445958a75a0704d566BF2C8");
+pub const ZERO_ADDRESS: &[u8] = &[0u8; 20];
 
 #[substreams::handlers::map]
 pub fn map_components(block: eth::v2::Block) -> Result<BlockTransactionProtocolComponents> {
@@ -214,6 +215,11 @@ pub fn map_protocol_changes(
 
                     if let Some(rate_providers) = rate_providers {
                         for rate_provider in rate_providers {
+                            if rate_provider == ZERO_ADDRESS {
+                                // Skipped: is not a rate provider
+                                continue;
+                            }
+
                             let trace_data = TraceData::Rpc(RpcTraceData {
                                 caller: None,
                                 calldata: hex::decode("679aefce").unwrap(), // getRate()

substreams/ethereum-balancer-v2/substreams.yaml

@@ -1,7 +1,7 @@
 specVersion: v0.1.0
 package:
   name: "ethereum_balancer_v2"
-  version: v0.3.1
+  version: v0.3.2
   url: "https://github.com/propeller-heads/tycho-protocol-sdk/tree/main/substreams/ethereum-balancer-v2"
 
 protobuf: