feat(aggregation-mode): retry bump and sending proofs on-chain after proof aggregation

aggregation_mode/proof_aggregator/Cargo.toml

@@ -21,7 +21,6 @@ reqwest = { version = "0.12" }
 ciborium = "=0.2.2"
 lambdaworks-crypto = { git = "https://github.com/lambdaclass/lambdaworks.git", rev = "5f8f2cfcc8a1a22f77e8dff2d581f1166eefb80b", features = ["serde"]}
 rayon = "1.10.0"
-backon = "1.2.0"
 sqlx = { version = "0.8", features = [ "runtime-tokio", "postgres", "uuid", "bigdecimal" ] }
 
 # zkvms

aggregation_mode/proof_aggregator/src/backend/eth.rs

@@ -0,0 +1,144 @@
+use alloy::primitives::{utils::parse_ether, U256};
+use std::time::Duration;
+
+// We assume a fixed gas cost of 300,000 for each of the 2 transactions
+const ON_CHAIN_COST_IN_GAS_UNITS: u64 = 600_000u64;
+
+/// Decides whether to send the aggregated proof to be verified on-chain based on
+/// time elapsed since last submission and monthly ETH budget.
+/// We make a linear function with the eth to spend this month and the time elapsed since last submission.
+/// If eth to spend / elapsed time is over the linear function, we skip the submission.
+pub fn should_send_proof_to_verify_on_chain(
+    time_elapsed: Duration,
+    monthly_eth_budget: f64,
+    network_gas_price: U256,
+) -> bool {
+    let on_chain_cost_in_gas: U256 = U256::from(ON_CHAIN_COST_IN_GAS_UNITS);
+    let max_to_spend_wei = max_to_spend_in_wei(time_elapsed, monthly_eth_budget);
+
+    let expected_cost_in_wei = network_gas_price * on_chain_cost_in_gas;
+
+    expected_cost_in_wei <= max_to_spend_wei
+}
+
+fn max_to_spend_in_wei(time_elapsed: Duration, monthly_eth_budget: f64) -> U256 {
+    const SECONDS_PER_MONTH: u64 = 30 * 24 * 60 * 60;
+
+    // Note: this expect is safe because in case it was invalid, should have been caught at startup
+    let monthly_budget_in_wei = parse_ether(&monthly_eth_budget.to_string())
+        .expect("The monthly budget should be a non-negative value");
+
+    let elapsed_seconds = U256::from(time_elapsed.as_secs());
+
+    let budget_available_per_second_in_wei = monthly_budget_in_wei / U256::from(SECONDS_PER_MONTH);
+
+    budget_available_per_second_in_wei * elapsed_seconds
+}
+
+#[cfg(test)]
+mod tests {
+    use super::should_send_proof_to_verify_on_chain;
+    use alloy::primitives::U256;
+    use std::time::Duration;
+
+    #[test]
+    fn test_should_send_proof_to_verify_on_chain_updated_cases() {
+        // The should_send_proof_to_verify_on_chain function returns true when:
+        // gas_price * 600_000 <= (seconds_elapsed) * (monthly_eth_budget / (30 * 24 * 60 * 60))
+
+        const BUDGET_PER_MONTH_IN_ETH: f64 = 0.15;
+        const ONE_DAY_SECONDS: u64 = 24 * 60 * 60;
+        let gas_price = U256::from(1_000_000_000u64); // 1 Gwei
+
+        // Case 1: Base case -> should return true
+        // Monthly Budget: 0.15 ETH -> 0.005 ETH per day -> 0.000000058 ETH per hour
+        // Elapsed Time: 24 hours
+        // Gas Price: 1 Gwei
+        // Max to spend: 0.000000058 ETH/hour * 24 hours = 0.005 ETH
+        // Expected cost: 600,000 * 1 Gwei = 0.0006 ETH
+        // Expected cost < Max to spend, so we can send the proof
+        assert!(should_send_proof_to_verify_on_chain(
+            Duration::from_secs(ONE_DAY_SECONDS), // 24 hours
+            BUDGET_PER_MONTH_IN_ETH,              // 0.15 ETH monthly budget
+            gas_price,                            // 1 Gwei gas price
+        ));
+
+        // Case 2: Slightly Increased Gas Price -> should return false
+        // Monthly Budget: 0.15 ETH -> 0.005 ETH per day -> 0.000000058 ETH per hour
+        // Elapsed Time: 24 hours
+        // Gas Price: 8 Gwei
+        // Max to spend: 0.000000058 ETH/hour * 24 hours = 0.005 ETH
+        // Expected cost: 600,000 * 8 Gwei = 0.0048 ETH
+        // Expected cost < Max to spend, so we can send the proof
+        assert!(should_send_proof_to_verify_on_chain(
+            Duration::from_secs(ONE_DAY_SECONDS), // 24 hours
+            BUDGET_PER_MONTH_IN_ETH,              // 0.15 ETH monthly budget
+            U256::from(8_000_000_000u64),         // 8 Gwei gas price
+        ));
+
+        // Case 3: Increased Gas Price -> should return false
+        // Monthly Budget: 0.15 ETH -> 0.005 ETH per day -> 0.000000058 ETH per hour
+        // Elapsed Time: 24 hours
+        // Gas Price: 10 Gwei
+        // Max to spend: 0.000000058 ETH/hour * 24 hours = 0.005 ETH
+        // Expected cost: 600,000 * 10 Gwei = 0.006 ETH
+        // Expected cost > Max to spend, so we cannot send the proof
+        assert!(!should_send_proof_to_verify_on_chain(
+            Duration::from_secs(ONE_DAY_SECONDS), // 24 hours
+            BUDGET_PER_MONTH_IN_ETH,              // 0.15 ETH monthly budget
+            U256::from(10_000_000_000u64),        // 10 Gwei gas price
+        ));
+
+        // Case 4: Slightly Reduced Time Elapsed -> should return true
+        // Monthly Budget: 0.15 ETH -> 0.005 ETH per day -> 0.000000058 ETH per hour
+        // Elapsed Time: 2 hours
+        // Gas Price: 1 Gwei
+        // Max to spend: 0.000000058 ETH/hour * 3 hours = 0.000625 ETH
+        // Expected cost: 600,000 * 1 Gwei = 0.0006 ETH
+        // Expected cost < Max to spend, so we can send the proof
+        assert!(should_send_proof_to_verify_on_chain(
+            Duration::from_secs(3 * 3600), // 3 hours
+            BUDGET_PER_MONTH_IN_ETH,       // 0.15 ETH monthly budget
+            gas_price,                     // 1 Gwei gas price
+        ));
+
+        // Case 5: Reduced Time Elapsed -> should return false
+        // Monthly Budget: 0.15 ETH -> 0.005 ETH per day -> 0.000000058 ETH per hour
+        // Elapsed Time: 1.2 hours
+        // Gas Price: 1 Gwei
+        // Max to spend: 0.000000058 ETH/hour * 1.2 hours = 0.00025 ETH
+        // Expected cost: 600,000 * 1 Gwei = 0.0006 ETH
+        // Expected cost > Max to spend, so we cannot send the proof
+        assert!(!should_send_proof_to_verify_on_chain(
+            Duration::from_secs_f64(1.2 * 3600.0), // 1.2 hours
+            BUDGET_PER_MONTH_IN_ETH,               // 0.15 ETH monthly budget
+            gas_price,                             // 1 Gwei gas price
+        ));
+
+        // Case 6: Slightly Reduced Monthly Budget -> should return true
+        // Monthly Budget: 0.1 ETH -> 0.0033 ETH per day -> 0.000000038 ETH per hour
+        // Elapsed Time: 24 hours
+        // Gas Price: 1 Gwei
+        // Max to spend: 0.000000038 ETH/hour * 24 hours = 0.0032832 ETH
+        // Expected cost: 600,000 * 1 Gwei = 0.0006 ETH
+        // Expected cost < Max to spend, so we can send the proof
+        assert!(should_send_proof_to_verify_on_chain(
+            Duration::from_secs(ONE_DAY_SECONDS), // 24 hours
+            0.1,                                  // 0.1 ETH monthly budget
+            gas_price,                            // 1 Gwei gas price
+        ));
+
+        // Case 7: Decreased Monthly Budget -> should return false
+        // Monthly Budget: 0.01 ETH -> 0.00033 ETH per day -> 0.0000000038 ETH per hour
+        // Elapsed Time: 24 hours
+        // Gas Price: 1 Gwei
+        // Max to spend: 0.0000000038 ETH/hour * 24 hours = 0.00032832 ETH
+        // Expected cost: 600,000 * 1 Gwei = 0.0006 ETH
+        // Expected cost > Max to spend, so we cannot send the proof
+        assert!(!should_send_proof_to_verify_on_chain(
+            Duration::from_secs(ONE_DAY_SECONDS), // 24 hours
+            0.01,                                 // 0.01 ETH monthly budget
+            gas_price,                            // 1 Gwei gas price
+        ));
+    }
+}