From 02227937adb6c6f867ea90826695112303089359 Mon Sep 17 00:00:00 2001
From: Louise Poole <louise@datarevenue.com>
Date: Fri, 25 Oct 2024 15:15:49 +0200
Subject: [PATCH] feat(usv2): set default balances on pool creation

---
 substreams/Cargo.lock                           |  2 +-
 substreams/ethereum-uniswap-v2/Cargo.toml       |  2 +-
 .../src/modules/1_map_pool_created.rs           | 17 ++++++++++++++---
 3 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/substreams/Cargo.lock b/substreams/Cargo.lock
index f9c4eb0..5a9be65 100644
--- a/substreams/Cargo.lock
+++ b/substreams/Cargo.lock
@@ -310,7 +310,7 @@ dependencies = [
 
 [[package]]
 name = "ethereum-uniswap-v2"
-version = "0.3.0"
+version = "0.3.1"
 dependencies = [
  "anyhow",
  "ethabi 18.0.0",
diff --git a/substreams/ethereum-uniswap-v2/Cargo.toml b/substreams/ethereum-uniswap-v2/Cargo.toml
index 3cd92be..20451f2 100644
--- a/substreams/ethereum-uniswap-v2/Cargo.toml
+++ b/substreams/ethereum-uniswap-v2/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ethereum-uniswap-v2"
-version = "0.3.0"
+version = "0.3.1"
 edition = "2021"
 
 [lib]
diff --git a/substreams/ethereum-uniswap-v2/src/modules/1_map_pool_created.rs b/substreams/ethereum-uniswap-v2/src/modules/1_map_pool_created.rs
index fe11ffe..adc0703 100644
--- a/substreams/ethereum-uniswap-v2/src/modules/1_map_pool_created.rs
+++ b/substreams/ethereum-uniswap-v2/src/modules/1_map_pool_created.rs
@@ -58,7 +58,7 @@ fn get_pools(block: &eth::Block, new_pools: &mut Vec<TransactionChanges>, params
             }],
             component_changes: vec![ProtocolComponent {
                 id: event.pair.to_hex(),
-                tokens: vec![event.token0, event.token1],
+                tokens: vec![event.token0.clone(), event.token1.clone()],
                 contracts: vec![],
                 static_att: vec![
                     // Trading Fee is hardcoded to 0.3%, saved as int in bps (basis points)
@@ -69,7 +69,7 @@ fn get_pools(block: &eth::Block, new_pools: &mut Vec<TransactionChanges>, params
                     },
                     Attribute {
                         name: "pool_address".to_string(),
-                        value: event.pair,
+                        value: event.pair.clone(),
                         change: ChangeType::Creation.into(),
                     },
                 ],
@@ -82,7 +82,18 @@ fn get_pools(block: &eth::Block, new_pools: &mut Vec<TransactionChanges>, params
                 }),
                 tx: Some(tycho_tx),
             }],
-            balance_changes: vec![],
+            balance_changes: vec![
+                BalanceChange {
+                    token: event.token0,
+                    balance: BigInt::from(0).to_signed_bytes_be(),
+                    component_id: event.pair.clone(),
+                },
+                BalanceChange {
+                    token: event.token1,
+                    balance: BigInt::from(0).to_signed_bytes_be(),
+                    component_id: event.pair,
+                },
+            ],
         })
     };