make solana-metrics optional in vote and stake programs (#4425)

Cargo.toml

@@ -590,7 +590,7 @@ solana-send-transaction-service = { path = "send-transaction-service", version =
 solana-short-vec = { path = "sdk/short-vec", version = "=2.2.0" }
 solana-shred-version = { path = "sdk/shred-version", version = "=2.2.0" }
 solana-stable-layout = { path = "sdk/stable-layout", version = "=2.2.0" }
-solana-stake-program = { path = "programs/stake", version = "=2.2.0" }
+solana-stake-program = { path = "programs/stake", version = "=2.2.0", default-features = false }
 solana-storage-bigtable = { path = "storage-bigtable", version = "=2.2.0" }
 solana-storage-proto = { path = "storage-proto", version = "=2.2.0" }
 solana-streamer = { path = "streamer", version = "=2.2.0" }
@@ -619,7 +619,7 @@ solana-udp-client = { path = "udp-client", version = "=2.2.0" }
 solana-validator-exit = { path = "sdk/validator-exit", version = "=2.2.0" }
 solana-version = { path = "version", version = "=2.2.0" }
 solana-vote = { path = "vote", version = "=2.2.0" }
-solana-vote-program = { path = "programs/vote", version = "=2.2.0" }
+solana-vote-program = { path = "programs/vote", version = "=2.2.0", default-features = false }
 solana-wen-restart = { path = "wen-restart", version = "=2.2.0" }
 solana-zk-elgamal-proof-program = { path = "programs/zk-elgamal-proof", version = "=2.2.0" }
 solana-zk-keygen = { path = "zk-keygen", version = "=2.2.0" }

programs/stake/Cargo.toml

@@ -20,7 +20,7 @@ solana-program-runtime = { workspace = true }
 solana-pubkey = { workspace = true }
 solana-sdk = { workspace = true }
 solana-type-overrides = { workspace = true }
-solana-vote-program = { workspace = true }
+solana-vote-program = { workspace = true, default-features = false }
 
 [dev-dependencies]
 assert_matches = { workspace = true }
@@ -30,6 +30,10 @@ solana-compute-budget = { workspace = true }
 solana-logger = { workspace = true }
 test-case = { workspace = true }
 
+[features]
+default = ["metrics"]
+metrics = ["solana-vote-program/metrics"]
+
 [lib]
 crate-type = ["lib"]
 name = "solana_stake_program"

programs/vote/Cargo.toml

@@ -30,7 +30,7 @@ solana-frozen-abi-macro = { workspace = true, optional = true, features = [
 solana-hash = { workspace = true }
 solana-instruction = { workspace = true }
 solana-keypair = { workspace = true }
-solana-metrics = { workspace = true }
+solana-metrics = { workspace = true, optional = true }
 solana-packet = { workspace = true }
 solana-program = { workspace = true }
 solana-program-runtime = { workspace = true }
@@ -58,12 +58,14 @@ name = "solana_vote_program"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [features]
+default = ["metrics"]
 frozen-abi = [
     "dep:solana-frozen-abi",
     "dep:solana-frozen-abi-macro",
     "solana-program/frozen-abi",
     "solana-program-runtime/frozen-abi"
 ]
+metrics = ["dep:solana-metrics"]
 
 [lints]
 workspace = true

programs/vote/src/lib.rs

@@ -4,7 +4,8 @@ pub mod vote_processor;
 pub mod vote_state;
 pub mod vote_transaction;
 
-#[macro_use]
+#[cfg_attr(feature = "metrics", macro_use)]
+#[cfg(feature = "metrics")]
 extern crate solana_metrics;
 
 #[cfg_attr(feature = "frozen-abi", macro_use)]

programs/vote/src/vote_state/mod.rs

@@ -397,6 +397,7 @@ fn check_and_filter_proposed_vote_state(
             proposed_hash,
             slot_hashes[slot_hashes_index].1
         );
+        #[cfg(feature = "metrics")]
         inc_new_counter_info!("dropped-vote-hash", 1);
         return Err(VoteError::SlotHashMismatch);
     }