fix(types): use f64 for GetChainTxStats tx_rate field

Bitcoin Core has always returned txrate as a double since the RPC was
added in v0.15 (PR #9733).

Author: deadmanoz

types/src/model/blockchain.rs

@@ -417,7 +417,7 @@ pub struct GetChainTxStats {
     /// The elapsed time in the window in seconds. Only returned if "window_block_count" is > 0.
     pub window_interval: Option<u32>,
     /// The average rate of transactions per second in the window. Only returned if "window_interval" is > 0.
-    pub tx_rate: Option<u32>,
+    pub tx_rate: Option<f64>,
 }
 
 /// Models the result of JSON-RPC method `getdeploymentinfo`.

types/src/v17/blockchain/into.rs

@@ -315,7 +315,6 @@ impl GetChainTxStats {
             self.window_tx_count.map(|h| crate::to_u32(h, "window_tx_count")).transpose()?;
         let window_interval =
             self.window_interval.map(|h| crate::to_u32(h, "window_interval")).transpose()?;
-        let tx_rate = self.tx_rate.map(|h| crate::to_u32(h, "tx_rate")).transpose()?;
 
         Ok(model::GetChainTxStats {
             time: crate::to_u32(self.time, "time")?,
@@ -325,7 +324,7 @@ impl GetChainTxStats {
             window_block_count: crate::to_u32(self.window_block_count, "window_block_count")?,
             window_tx_count,
             window_interval,
-            tx_rate,
+            tx_rate: self.tx_rate,
         })
     }
 }

types/src/v17/blockchain/mod.rs

@@ -438,7 +438,7 @@ pub struct GetChainTxStats {
     pub window_interval: Option<i64>,
     /// The average rate of transactions per second in the window. Only returned if "window_interval" is > 0.
     #[serde(rename = "txrate")]
-    pub tx_rate: Option<i64>,
+    pub tx_rate: Option<f64>,
 }
 
 /// Result of JSON-RPC method `getdifficulty`.

types/src/v19/blockchain/into.rs

@@ -81,7 +81,6 @@ impl GetChainTxStats {
             self.window_tx_count.map(|h| crate::to_u32(h, "window_tx_count")).transpose()?;
         let window_interval =
             self.window_interval.map(|h| crate::to_u32(h, "window_interval")).transpose()?;
-        let tx_rate = self.tx_rate.map(|h| crate::to_u32(h, "tx_rate")).transpose()?;
 
         Ok(model::GetChainTxStats {
             time: crate::to_u32(self.time, "time")?,
@@ -91,7 +90,7 @@ impl GetChainTxStats {
             window_block_count: crate::to_u32(self.window_block_count, "window_block_count")?,
             window_tx_count,
             window_interval,
-            tx_rate,
+            tx_rate: self.tx_rate,
         })
     }
 }

types/src/v19/blockchain/mod.rs

@@ -186,7 +186,7 @@ pub struct GetChainTxStats {
     pub window_interval: Option<i64>,
     /// The average rate of transactions per second in the window. Only returned if "window_interval" is > 0.
     #[serde(rename = "txrate")]
-    pub tx_rate: Option<i64>,
+    pub tx_rate: Option<f64>,
 }
 
 /// Result of JSON-RPC method `getmempoolancestors` with verbose set to `false`.