chain/ethereum: Implment rpc metrics collection with alloy

Author: incrypto32

Cargo.lock

@@ -38,7 +38,7 @@ repository = "https://github.com/graphprotocol/graph-node"
 license = "MIT OR Apache-2.0"
 
 [workspace.dependencies]
-alloy = { version = "0.15.10", features = ["full", "arbitrary"] }
+alloy = { version = "0.15.10", features = ["full", "json-rpc"] }
 alloy-rpc-types = "0.15.10"
 anyhow = "1.0"
 async-graphql = { version = "7.0.15", features = ["chrono"] }
@@ -95,6 +95,7 @@ thiserror = "2.0.12"
 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 = "0.5.2", features = ["cors"] }
 wasmparser = "0.118.1"
 wasmtime = "33.0.0"

Cargo.toml

@@ -15,6 +15,7 @@ tiny-keccak = "1.5.0"
 hex = "0.4.3"
 semver = "1.0.23"
 thiserror = { workspace = true }
+tower = { workspace = true }
 
 itertools = "0.14.0"
 

chain/ethereum/Cargo.toml

@@ -140,10 +140,9 @@ impl EthereumAdapter {
         call_only: bool,
     ) -> Self {
         let alloy = match &transport {
-            Transport::RPC { client, .. } => Arc::new(
-                alloy::providers::ProviderBuilder::new()
-                    .connect_client(alloy::rpc::client::RpcClient::new(client.clone(), false)),
-            ),
+            Transport::RPC { client, .. } => {
+                Arc::new(alloy::providers::ProviderBuilder::new().connect_client(client.clone()))
+            }
             Transport::IPC(ipc_connect) => Arc::new(
                 alloy::providers::ProviderBuilder::new()
                     .connect_ipc(ipc_connect.clone())