Seth: block-number

dapptools/src/seth.rs

@@ -46,6 +46,10 @@ async fn main() -> eyre::Result<()> {
                     .await?
             );
         }
+        Subcommands::BlockNumber { rpc_url } => {
+            let provider = Provider::try_from(rpc_url)?;
+            println!("{}", Seth::new(provider).block_number().await?);
+        }
         Subcommands::Call {
             rpc_url,
             address,

dapptools/src/seth_opts.rs

@@ -41,6 +41,12 @@ pub enum Subcommands {
         #[structopt(long, env = "ETH_RPC_URL")]
         rpc_url: String,
     },
+    #[structopt(name = "block-number")]
+    #[structopt(about = "returns latest block number")]
+    BlockNumber {
+        #[structopt(long, env = "ETH_RPC_URL")]
+        rpc_url: String,
+    },
     #[structopt(name = "call")]
     #[structopt(about = "Perform a local call to <to> without publishing a transaction.")]
     Call {

seth/src/lib.rs

@@ -195,6 +195,23 @@ where
 
         Ok(block)
     }
+
+    /// ```no_run
+    /// use seth::Seth;
+    /// use ethers_providers::{Provider, Http};
+    /// use std::convert::TryFrom;
+    ///
+    /// # async fn foo() -> eyre::Result<()> {
+    /// let provider = Provider::<Http>::try_from("http://localhost:8545")?;
+    /// let seth = Seth::new(provider);
+    /// let latest_block_number = seth.block_number().await?;
+    /// println!("{}", latest_block_number);
+    /// # Ok(())
+    /// # }
+    /// ```
+    pub async fn block_number(&self) -> Result<U64, M::Error> {
+        self.provider.get_block_number().await
+    }
 }
 
 pub struct SimpleSeth;