refactor: change plugin option type from &[PluginOptions] to Option<&PluginOptions> for understandability (#6763)

refactor: change plugin option type from `[PluginOptions]` to `Option<&PluginOptions>` for understandability

Signed-off-by: zyy17 <zyylsxm@gmail.com>

src/plugins/src/datanode.rs

@@ -22,7 +22,7 @@ use crate::options::PluginOptions;
 #[allow(unused_mut)]
 pub async fn setup_datanode_plugins(
     plugins: &mut Plugins,
-    plugin_options: &[PluginOptions],
+    plugin_options: Option<&PluginOptions>,
     dn_opts: &DatanodeOptions,
 ) -> Result<()> {
     Ok(())

src/plugins/src/flownode.rs

@@ -21,7 +21,7 @@ use crate::options::PluginOptions;
 #[allow(unused_mut)]
 pub async fn setup_flownode_plugins(
     _plugins: &mut Plugins,
-    _plugin_options: &[PluginOptions],
+    _plugin_options: Option<&PluginOptions>,
     _fn_opts: &FlownodeOptions,
 ) -> Result<()> {
     Ok(())

src/plugins/src/frontend.rs

@@ -23,7 +23,7 @@ use crate::options::PluginOptions;
 #[allow(unused_mut)]
 pub async fn setup_frontend_plugins(
     plugins: &mut Plugins,
-    _plugin_options: &[PluginOptions],
+    _plugin_options: Option<&PluginOptions>,
     fe_opts: &FrontendOptions,
 ) -> Result<()> {
     if let Some(user_provider) = fe_opts.user_provider.as_ref() {

src/plugins/src/meta_srv.rs

@@ -21,7 +21,7 @@ use crate::options::PluginOptions;
 #[allow(unused_variables)]
 pub async fn setup_metasrv_plugins(
     _plugins: &mut Plugins,
-    plugin_options: &[PluginOptions],
+    _plugin_options: Option<&PluginOptions>,
     metasrv_opts: &MetasrvOptions,
 ) -> Result<()> {
     Ok(())

src/plugins/src/options.rs

@@ -18,6 +18,6 @@ use serde::{Deserialize, Serialize};
 pub struct DummyOptions;
 
 #[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
-pub enum PluginOptions {
-    Dummy(DummyOptions),
+pub struct PluginOptions {
+    pub dummy: DummyOptions,
 }