Update fee calculation logic to accept price

CHANGELOG.md

@@ -6,12 +6,17 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
-### Changed
-#### Breaking
+### Breaking
 
+- [#672](https://github.com/FuelLabs/fuel-vm/pull/672): Remove `GasPrice` policy
+- [#672](https://github.com/FuelLabs/fuel-vm/pull/672): Add `gas_price` field to transaction execution
 - [#1632](https://github.com/FuelLabs/fuel-core/pull/1632): Removed `ContractsInfo` table. Contract salts and roots are no longer stored in on-chain data.
 - [#1632](https://github.com/FuelLabs/fuel-core/pull/1632): Opcode `CROO` now calculates the given contract's root on demand. `CROO` has therefore been changed to a `DependentCost` gas cost.
 
+### Changed
+
+- [#672](https://github.com/FuelLabs/fuel-vm/pull/672): Add `Tip` policy
+
 ## [Version 0.45.0]
 
 ### Changed

fuel-asm/src/args.rs

@@ -252,7 +252,7 @@ crate::enum_try_from! {
         PolicyTypes = 0x500,
 
         /// Set `$rA` to `tx.policies[0x00].gasPrice`
-        PolicyGasPrice = 0x501,
+        PolicyTip = 0x501,
 
         /// Set `$rA` to `tx.policies[count_ones(0b11 & tx.policyTypes) - 1].witnessLimit`
         PolicyWitnessLimit = 0x502,
@@ -362,7 +362,7 @@ fn encode_gtf_args() {
         GTFArgs::WitnessDataLength,
         GTFArgs::WitnessData,
         GTFArgs::PolicyTypes,
-        GTFArgs::PolicyGasPrice,
+        GTFArgs::PolicyTip,
         GTFArgs::PolicyWitnessLimit,
         GTFArgs::PolicyMaturity,
         GTFArgs::PolicyMaxFee,

fuel-tx/src/builder.rs

@@ -6,8 +6,8 @@ use crate::{
         field::{
             BytecodeLength,
             BytecodeWitnessIndex,
-            GasPrice,
             Maturity,
+            Tip,
             Witnesses,
         },
         Chargeable,
@@ -119,7 +119,7 @@ impl TransactionBuilder<Script> {
             script_gas_limit: Default::default(),
             script,
             script_data,
-            policies: Policies::new().with_gas_price(0),
+            policies: Policies::new(),
             inputs: Default::default(),
             outputs: Default::default(),
             witnesses: Default::default(),
@@ -148,7 +148,7 @@ impl TransactionBuilder<Create> {
             bytecode_witness_index: Default::default(),
             salt,
             storage_slots,
-            policies: Policies::new().with_gas_price(0),
+            policies: Policies::new(),
             inputs: Default::default(),
             outputs: Default::default(),
             witnesses: Default::default(),
@@ -291,9 +291,8 @@ impl<Tx: Buildable> TransactionBuilder<Tx> {
         self.sign_keys.keys()
     }
 
-    pub fn gas_price(&mut self, gas_price: Word) -> &mut Self {
-        self.tx.set_gas_price(gas_price);
-
+    pub fn tip(&mut self, tip: Word) -> &mut Self {
+        self.tx.set_tip(tip);
         self
     }
 

fuel-tx/src/tests/bytes.rs

@@ -402,7 +402,6 @@ fn transaction() {
 fn create_input_data_offset() {
     let rng = &mut StdRng::seed_from_u64(8586);
 
-    let gas_price = 100;
     let maturity = 10.into();
     let bytecode_witness_index = 0x00;
     let salt = rng.gen();
@@ -475,9 +474,7 @@ fn create_input_data_offset() {
 
                     let tx = Transaction::create(
                         bytecode_witness_index,
-                        Policies::new()
-                            .with_maturity(maturity)
-                            .with_gas_price(gas_price),
+                        Policies::new().with_maturity(maturity),
                         salt,
                         storage_slot.clone(),
                         inputs,
@@ -528,7 +525,6 @@ fn create_input_data_offset() {
 fn script_input_coin_data_offset() {
     let rng = &mut StdRng::seed_from_u64(8586);
 
-    let gas_price = 100;
     let gas_limit = 1000;
     let maturity = 10.into();
 
@@ -597,9 +593,7 @@ fn script_input_coin_data_offset() {
                             gas_limit,
                             script.clone(),
                             script_data.clone(),
-                            Policies::new()
-                                .with_maturity(maturity)
-                                .with_gas_price(gas_price),
+                            Policies::new().with_maturity(maturity),
                             inputs,
                             outputs.clone(),
                             witnesses.clone(),

fuel-tx/src/tests/valid_cases/input.rs

@@ -141,6 +141,7 @@ fn input_coin_message_signature() {
 #[test]
 fn coin_signed() {
     let rng = &mut StdRng::seed_from_u64(8586);
+    let arb_gas_price = 1;
 
     let mut tx = Script::default();
 
@@ -157,7 +158,11 @@ fn coin_signed() {
 
     let block_height = rng.gen();
     let err = tx
-        .check(block_height, &ConsensusParameters::standard())
+        .check(
+            block_height,
+            &ConsensusParameters::standard(),
+            arb_gas_price,
+        )
         .expect_err("Expected failure");
 
     assert_eq!(ValidityError::InputWitnessIndexBounds { index: 0 }, err);
@@ -333,6 +338,7 @@ fn contract() {
 #[test]
 fn message_metadata() {
     let rng = &mut StdRng::seed_from_u64(8586);
+    let arb_gas_price = 1;
 
     let txhash: Bytes32 = rng.gen();
 
@@ -370,7 +376,11 @@ fn message_metadata() {
 
     let block_height = rng.gen();
     let err = tx
-        .check(block_height, &ConsensusParameters::standard())
+        .check(
+            block_height,
+            &ConsensusParameters::standard(),
+            arb_gas_price,
+        )
         .expect_err("Expected failure");
 
     assert_eq!(ValidityError::InputWitnessIndexBounds { index: 0 }, err,);
@@ -471,6 +481,8 @@ fn message_metadata() {
 fn message_message_coin() {
     let rng = &mut StdRng::seed_from_u64(8586);
 
+    let arb_gas_price = 1;
+
     let txhash: Bytes32 = rng.gen();
 
     let predicate = generate_nonempty_padded_bytes(rng);
@@ -495,7 +507,11 @@ fn message_message_coin() {
 
     let block_height = rng.gen();
     let err = tx
-        .check(block_height, &ConsensusParameters::standard())
+        .check(
+            block_height,
+            &ConsensusParameters::standard(),
+            arb_gas_price,
+        )
         .expect_err("Expected failure");
 
     assert_eq!(ValidityError::InputWitnessIndexBounds { index: 0 }, err,);
@@ -556,6 +572,7 @@ fn message_message_coin() {
 fn transaction_with_duplicate_coin_inputs_is_invalid() {
     let rng = &mut StdRng::seed_from_u64(8586);
     let utxo_id = rng.gen();
+    let arb_gas_price = 1;
 
     let a = Input::coin_signed(
         utxo_id,
@@ -581,7 +598,11 @@ fn transaction_with_duplicate_coin_inputs_is_invalid() {
         .add_input(b)
         .add_witness(rng.gen())
         .finalize()
-        .check_without_signatures(Default::default(), &ConsensusParameters::standard())
+        .check_without_signatures(
+            Default::default(),
+            &ConsensusParameters::standard(),
+            arb_gas_price,
+        )
         .expect_err("Expected checkable failure");
 
     assert_eq!(err, ValidityError::DuplicateInputUtxoId { utxo_id });
@@ -590,6 +611,7 @@ fn transaction_with_duplicate_coin_inputs_is_invalid() {
 #[test]
 fn transaction_with_duplicate_message_inputs_is_invalid() {
     let rng = &mut StdRng::seed_from_u64(8586);
+    let arb_gas_price = 1;
     let message_input = Input::message_data_signed(
         rng.gen(),
         rng.gen(),
@@ -619,6 +641,7 @@ fn transaction_with_duplicate_message_inputs_is_invalid() {
         .check_without_signatures(
             Default::default(),
             &ConsensusParameters::standard(),
+            arb_gas_price,
         )
         .expect_err("Expected checkable failure");
 
@@ -628,6 +651,7 @@ fn transaction_with_duplicate_message_inputs_is_invalid() {
 #[test]
 fn transaction_with_duplicate_contract_inputs_is_invalid() {
     let rng = &mut StdRng::seed_from_u64(8586);
+    let arb_gas_price = 1;
     let contract_id = rng.gen();
     let fee = Input::coin_signed(
         rng.gen(),
@@ -652,7 +676,11 @@ fn transaction_with_duplicate_contract_inputs_is_invalid() {
         .add_output(o)
         .add_output(p)
         .finalize()
-        .check_without_signatures(Default::default(), &ConsensusParameters::standard())
+        .check_without_signatures(
+            Default::default(),
+            &ConsensusParameters::standard(),
+            arb_gas_price,
+        )
         .expect_err("Expected checkable failure");
 
     assert_eq!(err, ValidityError::DuplicateInputContractId { contract_id });
@@ -662,6 +690,7 @@ fn transaction_with_duplicate_contract_inputs_is_invalid() {
 fn transaction_with_duplicate_contract_utxo_id_is_valid() {
     let rng = &mut StdRng::seed_from_u64(8586);
     let input_utxo_id: UtxoId = rng.gen();
+    let arb_gas_price = 1;
 
     let a = Input::contract(input_utxo_id, rng.gen(), rng.gen(), rng.gen(), rng.gen());
     let b = Input::contract(input_utxo_id, rng.gen(), rng.gen(), rng.gen(), rng.gen());
@@ -686,6 +715,10 @@ fn transaction_with_duplicate_contract_utxo_id_is_valid() {
         .add_output(p)
         .add_witness(rng.gen())
         .finalize()
-        .check_without_signatures(Default::default(), &ConsensusParameters::standard())
+        .check_without_signatures(
+            Default::default(),
+            &ConsensusParameters::standard(),
+            arb_gas_price,
+        )
         .expect("Duplicated UTXO id is valid for contract input");
 }