Use backward-compatible V0 metadata

crates/services/gas_price_service/src/v0/metadata.rs

@@ -4,8 +4,17 @@ use fuel_gas_price_algorithm::v0::AlgorithmUpdaterV0;
 pub struct V0Metadata {
     /// The gas price to cover the execution of the next block
     pub new_exec_price: u64,
+    // Execution
+    /// The lowest the algorithm allows the exec gas price to go
+    pub min_exec_gas_price: u64,
+    /// The Percentage the execution gas price will change in a single block, either increase or decrease
+    /// based on the fullness of the last L2 block
+    pub exec_gas_price_change_percent: u64,
     /// The height for which the `new_exec_price` is calculated, which should be the _next_ block
     pub l2_block_height: u32,
+    /// The threshold of gas usage above and below which the gas price will increase or decrease
+    /// This is a percentage of the total capacity of the L2 block
+    pub l2_block_fullness_threshold_percent: u64,
 }
 
 pub struct V0AlgorithmConfig {
@@ -19,7 +28,11 @@ impl From<AlgorithmUpdaterV0> for V0Metadata {
     fn from(updater: AlgorithmUpdaterV0) -> Self {
         Self {
             new_exec_price: updater.new_exec_price,
+            min_exec_gas_price: updater.min_exec_gas_price,
+            exec_gas_price_change_percent: updater.exec_gas_price_change_percent,
             l2_block_height: updater.l2_block_height,
+            l2_block_fullness_threshold_percent: updater
+                .l2_block_fullness_threshold_percent,
         }
     }
 }

crates/services/gas_price_service/src/v0/tests.rs

@@ -132,7 +132,10 @@ fn arbitrary_config() -> V0AlgorithmConfig {
 fn arbitrary_metadata() -> V0Metadata {
     V0Metadata {
         new_exec_price: 100,
+        min_exec_gas_price: 0,
+        exec_gas_price_change_percent: 0,
         l2_block_height: 0,
+        l2_block_fullness_threshold_percent: 0,
     }
 }
 
@@ -339,6 +342,7 @@ async fn uninitialized_task__new__if_exists_already_reload_old_values_with_overr
     let V0Metadata {
         new_exec_price,
         l2_block_height,
+        ..
     } = original_metadata;
     let UninitializedTask { algo_updater, .. } = service;
     assert_eq!(algo_updater.new_exec_price, new_exec_price);