feat(da): add NamespaceCommand for deriving DA namespace from genesis…

… file (#3003)

This commit introduces the `NamespaceCommand` which allows users to derive the DA namespace from a genesis file. The command is now part of the DA command module, enhancing the functionality provided by the CLI.

crates/rooch/src/commands/da/commands/mod.rs

@@ -1,4 +1,5 @@
 // Copyright (c) RoochNetwork
 // SPDX-License-Identifier: Apache-2.0
 
+pub mod namespace;
 pub mod unpack;

crates/rooch/src/commands/da/commands/namespace.rs

@@ -0,0 +1,23 @@
+// Copyright (c) RoochNetwork
+// SPDX-License-Identifier: Apache-2.0
+
+use clap::Parser;
+use rooch_config::da_config::derive_genesis_namespace;
+use rooch_types::error::RoochResult;
+use std::path::PathBuf;
+
+/// Derive DA namespace from genesis file.
+#[derive(Debug, Parser)]
+pub struct NamespaceCommand {
+    #[clap(long = "genesis-file-path")]
+    pub genesis_file_path: PathBuf,
+}
+
+impl NamespaceCommand {
+    pub fn execute(self) -> RoochResult<()> {
+        let genesis_bytes = std::fs::read(&self.genesis_file_path)?;
+        let namespace = derive_genesis_namespace(&genesis_bytes);
+        println!("DA genesis namespace: {}", namespace);
+        Ok(())
+    }
+}

crates/rooch/src/commands/da/mod.rs

@@ -4,6 +4,7 @@
 pub mod commands;
 
 use crate::cli_types::CommandAction;
+use crate::commands::da::commands::namespace::NamespaceCommand;
 use crate::commands::da::commands::unpack::UnpackCommand;
 use async_trait::async_trait;
 use clap::Parser;
@@ -23,6 +24,7 @@ impl CommandAction<String> for DA {
             DACommand::Unpack(unpack) => unpack.execute().map(|resp| {
                 serde_json::to_string_pretty(&resp).expect("Failed to serialize response")
             }),
+            DACommand::Namespace(namespace) => namespace.execute().map(|_| "".to_owned()),
         }
     }
 }
@@ -31,4 +33,5 @@ impl CommandAction<String> for DA {
 #[clap(name = "da")]
 pub enum DACommand {
     Unpack(UnpackCommand),
+    Namespace(NamespaceCommand),
 }