Migrate from rust-web3 to alloy

Cargo.toml

@@ -39,6 +39,8 @@ repository = "https://github.com/graphprotocol/graph-node"
 license = "MIT OR Apache-2.0"
 
 [workspace.dependencies]
+alloy = { version = "1.0.33", features = ["dyn-abi", "json-abi", "full", "arbitrary", "json-rpc"] }
+alloy-rpc-types = "1.0.33"
 anyhow = "1.0"
 async-graphql = { version = "7.0.17", features = ["chrono"] }
 async-graphql-axum = "7.0.17"
@@ -93,6 +95,7 @@ thiserror = "2.0.16"
 tokio = { version = "1.45.1", features = ["full"] }
 tonic = { version = "0.12.3", features = ["tls-roots", "gzip"] }
 tonic-build = { version = "0.12.3", features = ["prost"] }
+tower = { version = "0.5.1", features = ["full"] }
 tower-http = { version = "0.6.6", features = ["cors"] }
 wasmparser = "0.118.1"
 wasmtime = "33.0.2"

chain/ethereum/Cargo.toml

@@ -15,6 +15,7 @@ tiny-keccak = "1.5.0"
 hex = "0.4.3"
 semver = "1.0.27"
 thiserror = { workspace = true }
+tower = { workspace = true }
 
 itertools = "0.14.0"
 

chain/ethereum/build.rs

@@ -3,6 +3,7 @@ fn main() {
 
     tonic_build::configure()
         .out_dir("src/protobuf")
+        .protoc_arg("--experimental_allow_proto3_optional")
         .compile_protos(&["proto/ethereum.proto"], &["proto"])
         .expect("Failed to compile Firehose Ethereum proto(s)");
 }