refactor: implement breaking consensus for block v2

Block v1 (compatible with weatherwax at all heights):
- Kernel ordering using every kernel field
- Input MR commits to empty serialization of bitmap

Block v2 (Igor, breaking change)
- Kernel ordering (#3193)
- Input MR uses input hashes only without extaneous empty bitmap bytes
  (#3195)

base_layer/core/src/blocks/block.rs

@@ -81,6 +81,10 @@ impl Block {
         Self { header, body }
     }
 
+    pub fn version(&self) -> u16 {
+        self.header.version
+    }
+
     /// This function will calculate the total fees contained in a block
     pub fn calculate_fees(&self) -> MicroTari {
         self.body.kernels().iter().fold(0.into(), |sum, x| sum + x.fee)
@@ -239,7 +243,7 @@ impl BlockBuilder {
             header: self.header,
             body: AggregateBody::new(self.inputs, self.outputs, self.kernels),
         };
-        block.body.sort();
+        block.body.sort(block.header.version);
         block
     }
 }

base_layer/core/src/blocks/genesis_block.rs

@@ -159,7 +159,7 @@ pub fn get_stibbons_genesis_block_raw() -> Block {
             excess_sig: sig,
         }],
     );
-    body.sort();
+    body.sort(1);
     Block {
         header: BlockHeader {
             version: 0,
@@ -226,7 +226,7 @@ pub fn get_weatherwax_genesis_block_raw() -> Block {
             excess_sig: sig,
         }],
     );
-    body.sort();
+    body.sort(1);
     // set genesis timestamp
     let genesis = DateTime::parse_from_rfc2822("07 Jul 2021 06:00:00 +0200").unwrap();
     let timestamp = genesis.timestamp() as u64;
@@ -336,7 +336,7 @@ pub fn get_ridcully_genesis_block_raw() -> Block {
             excess_sig: sig,
         }],
     );
-    body.sort();
+    body.sort(1);
     Block {
         header: BlockHeader {
             version: 0,
@@ -419,7 +419,7 @@ pub fn get_igor_genesis_block_raw() -> Block {
             excess_sig: sig,
         }],
     );
-    body.sort();
+    body.sort(2);
     // set genesis timestamp
     let genesis = DateTime::parse_from_rfc2822("27 Aug 2021 06:00:00 +0200").unwrap();
     let timestamp = genesis.timestamp() as u64;

base_layer/core/src/chain_storage/blockchain_database.rs

@@ -228,7 +228,6 @@ where B: BlockchainBackend
     /// Returns a reference to the consensus cosntants at the current height
     pub fn consensus_constants(&self) -> Result<&ConsensusConstants, ChainStorageError> {
         let height = self.get_height()?;
-
         Ok(self.consensus_manager.consensus_constants(height))
     }
 
@@ -648,7 +647,7 @@ where B: BlockchainBackend
 
     pub fn prepare_new_block(&self, template: NewBlockTemplate) -> Result<Block, ChainStorageError> {
         let NewBlockTemplate { header, mut body, .. } = template;
-        body.sort();
+        body.sort(header.version);
         let mut header = BlockHeader::from(header);
         // If someone advanced the median timestamp such that the local time is less than the median timestamp, we need
         // to increase the timestamp to be greater than the median timestamp
@@ -1051,10 +1050,17 @@ pub fn calculate_mmr_roots<T: BlockchainBackend>(db: &T, block: &Block) -> Resul
 
     output_mmr.compress();
 
+    // TODO: #testnetreset clean up this code
+    let input_mr = if header.version == 1 {
+        MutableMmr::<HashDigest, _>::new(input_mmr.get_pruned_hash_set()?, Bitmap::create())?.get_merkle_root()?
+    } else {
+        input_mmr.get_merkle_root()?
+    };
+
     let mmr_roots = MmrRoots {
         kernel_mr: kernel_mmr.get_merkle_root()?,
         kernel_mmr_size: kernel_mmr.get_leaf_count()? as u64,
-        input_mr: input_mmr.get_merkle_root()?,
+        input_mr,
         output_mr: output_mmr.get_merkle_root()?,
         output_mmr_size: output_mmr.get_leaf_count() as u64,
         witness_mr: witness_mmr.get_merkle_root()?,

base_layer/core/src/consensus/consensus_constants.rs

@@ -209,7 +209,7 @@ impl ConsensusConstants {
             emission_initial: 5_538_846_115 * uT,
             emission_decay: &EMISSION_DECAY,
             emission_tail: 100.into(),
-            max_randomx_seed_height: std::u64::MAX,
+            max_randomx_seed_height: u64::MAX,
             proof_of_work: algos,
             faucet_value: (5000 * 4000) * T,
         }]
@@ -218,7 +218,7 @@ impl ConsensusConstants {
     pub fn ridcully() -> Vec<Self> {
         let difficulty_block_window = 90;
         let mut algos = HashMap::new();
-        // seting sha3/monero to 40/60 split
+        // setting sha3/monero to 40/60 split
         algos.insert(PowAlgorithm::Sha3, PowAlgorithmConstants {
             max_target_time: 1800,
             min_difficulty: 60_000_000.into(),
@@ -242,7 +242,7 @@ impl ConsensusConstants {
             emission_initial: 5_538_846_115 * uT,
             emission_decay: &EMISSION_DECAY,
             emission_tail: 100.into(),
-            max_randomx_seed_height: std::u64::MAX,
+            max_randomx_seed_height: u64::MAX,
             proof_of_work: algos,
             faucet_value: (5000 * 4000) * T,
         }]
@@ -277,7 +277,7 @@ impl ConsensusConstants {
             target_time: 200,
         });
         let mut algos2 = HashMap::new();
-        // seting sha3/monero to 40/60 split
+        // setting sha3/monero to 40/60 split
         algos2.insert(PowAlgorithm::Sha3, PowAlgorithmConstants {
             max_target_time: 1800,
             min_difficulty: 60_000_000.into(),
@@ -302,7 +302,7 @@ impl ConsensusConstants {
                 emission_initial: 5_538_846_115 * uT,
                 emission_decay: &EMISSION_DECAY,
                 emission_tail: 100.into(),
-                max_randomx_seed_height: std::u64::MAX,
+                max_randomx_seed_height: u64::MAX,
                 proof_of_work: algos,
                 faucet_value: (5000 * 4000) * T,
             },
@@ -317,7 +317,7 @@ impl ConsensusConstants {
                 emission_initial: 5_538_846_115 * uT,
                 emission_decay: &EMISSION_DECAY,
                 emission_tail: 100.into(),
-                max_randomx_seed_height: std::u64::MAX,
+                max_randomx_seed_height: u64::MAX,
                 proof_of_work: algos2,
                 faucet_value: (5000 * 4000) * T,
             },
@@ -326,7 +326,7 @@ impl ConsensusConstants {
 
     pub fn weatherwax() -> Vec<Self> {
         let mut algos = HashMap::new();
-        // seting sha3/monero to 40/60 split
+        // setting sha3/monero to 40/60 split
         algos.insert(PowAlgorithm::Sha3, PowAlgorithmConstants {
             max_target_time: 1800,
             min_difficulty: 60_000_000.into(),
@@ -350,15 +350,15 @@ impl ConsensusConstants {
             emission_initial: 5_538_846_115 * uT,
             emission_decay: &EMISSION_DECAY,
             emission_tail: 100.into(),
-            max_randomx_seed_height: std::u64::MAX,
+            max_randomx_seed_height: u64::MAX,
             proof_of_work: algos,
             faucet_value: (5000 * 4000) * T,
         }]
     }
 
     pub fn igor() -> Vec<Self> {
         let mut algos = HashMap::new();
-        // seting sha3/monero to 40/60 split
+        // setting sha3/monero to 40/60 split
         algos.insert(PowAlgorithm::Sha3, PowAlgorithmConstants {
             max_target_time: 1800,
             min_difficulty: 60_000_000.into(),
@@ -374,15 +374,15 @@ impl ConsensusConstants {
         vec![ConsensusConstants {
             effective_from_height: 0,
             coinbase_lock_height: 6,
-            blockchain_version: 1,
+            blockchain_version: 2,
             future_time_limit: 540,
             difficulty_block_window: 90,
             max_block_transaction_weight: 19500,
             median_timestamp_count: 11,
             emission_initial: 5_538_846_115 * uT,
             emission_decay: &EMISSION_DECAY,
             emission_tail: 100.into(),
-            max_randomx_seed_height: std::u64::MAX,
+            max_randomx_seed_height: u64::MAX,
             proof_of_work: algos,
             faucet_value: (5000 * 4000) * T,
         }]
@@ -415,7 +415,7 @@ impl ConsensusConstants {
             emission_initial: 10_000_000.into(),
             emission_decay: &EMISSION_DECAY,
             emission_tail: 100.into(),
-            max_randomx_seed_height: std::u64::MAX,
+            max_randomx_seed_height: u64::MAX,
             proof_of_work: algos,
             faucet_value: MicroTari::from(0),
         }]

base_layer/core/src/proto/transaction.rs

@@ -223,8 +223,7 @@ impl TryFrom<proto::types::AggregateBody> for AggregateBody {
         let inputs = try_convert_all(body.inputs)?;
         let outputs = try_convert_all(body.outputs)?;
         let kernels = try_convert_all(body.kernels)?;
-        let mut body = AggregateBody::new(inputs, outputs, kernels);
-        body.sort();
+        let body = AggregateBody::new(inputs, outputs, kernels);
         Ok(body)
     }
 }

base_layer/core/src/transactions/aggregated_body.rs

@@ -45,7 +45,7 @@ pub const LOG_TARGET: &str = "c::tx::aggregated_body";
 
 /// The components of the block or transaction. The same struct can be used for either, since in Mimblewimble,
 /// cut-through means that blocks and transactions have the same structure.
-#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct AggregateBody {
     sorted: bool,
     /// List of inputs spent by the transaction.
@@ -198,13 +198,18 @@ impl AggregateBody {
     }
 
     /// Sort the component lists of the aggregate body
-    pub fn sort(&mut self) {
+    pub fn sort(&mut self, version: u16) {
         if self.sorted {
             return;
         }
         self.inputs.sort();
         self.outputs.sort();
-        self.kernels.sort();
+        // TODO: #testnetreset clean up this code
+        if version <= 1 {
+            self.kernels.sort_by(|a, b| a.deprecated_cmp(b));
+        } else {
+            self.kernels.sort();
+        }
         self.sorted = true;
     }
 
@@ -471,6 +476,14 @@ impl AggregateBody {
     }
 }
 
+impl PartialEq for AggregateBody {
+    fn eq(&self, other: &Self) -> bool {
+        self.kernels == other.kernels && self.inputs == other.inputs && self.outputs == other.outputs
+    }
+}
+
+impl Eq for AggregateBody {}
+
 /// This will strip away the offset of the transaction returning a pure aggregate body
 impl From<Transaction> for AggregateBody {
     fn from(transaction: Transaction) -> Self {