eden-client refactoring: move getConfig

Summary:
## Context
We should not directly make Thrift calls from EdenFS cli commands/subcommands. Instead, encapsulate the methods into the eden instance.
## This Diff
Wraps `getConfig` as the eden instance method.
## Note
There is already a method of eden instance called `get_config` which is a wrapper around `edenfs_config::load_config` so I named the  new method "get_config_default" since it's calling with the default arg.

Reviewed By: jdelliot

Differential Revision: D67367636

fbshipit-source-id: e844efe44a752f917a2bfeef05002cd64c4b767c

eden/fs/cli_rs/edenfs-client/src/instance.rs

@@ -37,6 +37,7 @@ use thrift_streaming_thriftclients::build_StreamingEdenService_client;
 #[cfg(fbcode_build)]
 use thrift_types::edenfs::ChangesSinceV2Params;
 use thrift_types::edenfs::DaemonInfo;
+use thrift_types::edenfs::GetConfigParams;
 use thrift_types::edenfs::GetCurrentSnapshotInfoRequest;
 use thrift_types::edenfs::GetScmStatusParams;
 use thrift_types::edenfs::MountId;
@@ -539,6 +540,19 @@ impl EdenFsInstance {
 
         Ok(())
     }
+
+    pub async fn get_config_default(&self) -> Result<thrift_types::edenfs_config::EdenConfigData> {
+        let client = self
+            .connect(None)
+            .await
+            .with_context(|| "Unable to connect to EdenFS daemon")?;
+
+        let params: GetConfigParams = Default::default();
+        client
+            .getConfig(&params)
+            .await
+            .map_err(|_| EdenFsError::Other(anyhow!("failed to get default eden config data")))
+    }
 }
 
 pub trait DaemonHealthy {

eden/fs/cli_rs/edenfs-commands/src/config.rs

@@ -18,7 +18,6 @@ use edenfs_client::EdenFsInstance;
 #[cfg(windows)]
 use edenfs_utils::find_python;
 use hg_util::path::expand_path;
-use thrift_types::edenfs::GetConfigParams;
 use thrift_types::edenfs_config::ConfigSourceType;
 
 use crate::ExitCode;
@@ -204,10 +203,7 @@ pub struct FsConfigCmd {
 impl crate::Subcommand for FsConfigCmd {
     async fn run(&self) -> Result<ExitCode> {
         let instance = EdenFsInstance::global();
-        let client = instance.connect(None).await?;
-
-        let params: GetConfigParams = Default::default();
-        let config_data = client.getConfig(&params).await?;
+        let config_data = instance.get_config_default().await?;
 
         let mut current_section: Option<String> = None;