Properly type RpcClient::get_version() (#6919)

ci/publish-tarball.sh

@@ -67,6 +67,9 @@ echo --- Creating tarball
     echo "target: $TARGET"
   ) > solana-release/version.yml
 
+  # Make CHANNEL available to include in the software version information
+  export CHANNEL
+
   source ci/rust-version.sh stable
   scripts/cargo-install-all.sh +"$rust_stable" --use-move solana-release
 

cli/src/cluster_query.rs

@@ -7,7 +7,6 @@ use crate::{
 };
 use clap::{value_t_or_exit, App, Arg, ArgMatches, SubCommand};
 use console::{style, Emoji};
-use serde_json::Value;
 use solana_client::{rpc_client::RpcClient, rpc_request::RpcVoteAccountInfo};
 use solana_sdk::{
     clock,
@@ -131,21 +130,9 @@ pub fn parse_show_validators(matches: &ArgMatches<'_>) -> Result<CliCommandInfo,
     })
 }
 
-pub fn process_cluster_version(rpc_client: &RpcClient, config: &CliConfig) -> ProcessResult {
-    let remote_version: Value = serde_json::from_str(&rpc_client.get_version()?)?;
-    println!(
-        "{} {}",
-        style("Cluster versions from:").bold(),
-        config.json_rpc_url
-    );
-    if let Some(versions) = remote_version.as_object() {
-        for (key, value) in versions.iter() {
-            if let Some(value_string) = value.as_str() {
-                println_name_value(&format!("* {}:", key), &value_string);
-            }
-        }
-    }
-    Ok("".to_string())
+pub fn process_cluster_version(rpc_client: &RpcClient, _config: &CliConfig) -> ProcessResult {
+    let remote_version = rpc_client.get_version()?;
+    Ok(remote_version.solana_core)
 }
 
 pub fn process_fees(rpc_client: &RpcClient) -> ProcessResult {

client/src/rpc_client.rs

@@ -4,7 +4,7 @@ use crate::{
     generic_rpc_client_request::GenericRpcClientRequest,
     mock_rpc_client_request::MockRpcClientRequest,
     rpc_client_request::RpcClientRequest,
-    rpc_request::{RpcEpochInfo, RpcRequest, RpcVoteAccountStatus},
+    rpc_request::{RpcEpochInfo, RpcRequest, RpcVersionInfo, RpcVoteAccountStatus},
 };
 use bincode::serialize;
 use log::*;
@@ -234,7 +234,7 @@ impl RpcClient {
         })
     }
 
-    pub fn get_version(&self) -> io::Result<String> {
+    pub fn get_version(&self) -> io::Result<RpcVersionInfo> {
         let response = self
             .client
             .send(&RpcRequest::GetVersion, None, 0, None)
@@ -245,7 +245,7 @@ impl RpcClient {
                 )
             })?;
 
-        serde_json::to_string(&response).map_err(|err| {
+        serde_json::from_value(response).map_err(|err| {
             io::Error::new(
                 io::ErrorKind::Other,
                 format!("GetVersion parse failure: {}", err),

client/src/rpc_request.rs

@@ -4,7 +4,7 @@ use solana_sdk::{
     clock::{Epoch, Slot},
     commitment_config::CommitmentConfig,
 };
-use std::{error, fmt, io};
+use std::{error, fmt, io, net::SocketAddr};
 
 pub type RpcResponseIn<T> = JsonResult<Response<T>>;
 pub type RpcResponse<T> = io::Result<Response<T>>;
@@ -20,6 +20,18 @@ pub struct Response<T> {
     pub value: T,
 }
 
+#[derive(Serialize, Deserialize, Clone, Debug)]
+pub struct RpcContactInfo {
+    /// Pubkey of the node as a base-58 string
+    pub pubkey: String,
+    /// Gossip port
+    pub gossip: Option<SocketAddr>,
+    /// Tpu port
+    pub tpu: Option<SocketAddr>,
+    /// JSON RPC port
+    pub rpc: Option<SocketAddr>,
+}
+
 #[derive(Serialize, Deserialize, Clone, Debug)]
 #[serde(rename_all = "camelCase")]
 pub struct RpcEpochInfo {
@@ -36,6 +48,13 @@ pub struct RpcEpochInfo {
     pub absolute_slot: Slot,
 }
 
+#[derive(Serialize, Deserialize, Clone, Debug)]
+#[serde(rename_all = "kebab-case")]
+pub struct RpcVersionInfo {
+    /// The current version of solana-core
+    pub solana_core: String,
+}
+
 #[derive(Serialize, Deserialize, Clone, Debug)]
 #[serde(rename_all = "camelCase")]
 pub struct RpcVoteAccountStatus {

core/src/rpc.rs

@@ -13,7 +13,8 @@ use bincode::serialize;
 use jsonrpc_core::{Error, Metadata, Result};
 use jsonrpc_derive::rpc;
 use solana_client::rpc_request::{
-    Response, RpcEpochInfo, RpcResponseContext, RpcVoteAccountInfo, RpcVoteAccountStatus,
+    Response, RpcContactInfo, RpcEpochInfo, RpcResponseContext, RpcVersionInfo, RpcVoteAccountInfo,
+    RpcVoteAccountStatus,
 };
 use solana_drone::drone::request_airdrop_transaction;
 use solana_ledger::{
@@ -342,25 +343,6 @@ pub struct Meta {
 }
 impl Metadata for Meta {}
 
-#[derive(Serialize, Deserialize, Clone, Debug)]
-pub struct RpcContactInfo {
-    /// Pubkey of the node as a base-58 string
-    pub pubkey: String,
-    /// Gossip port
-    pub gossip: Option<SocketAddr>,
-    /// Tpu port
-    pub tpu: Option<SocketAddr>,
-    /// JSON RPC port
-    pub rpc: Option<SocketAddr>,
-}
-
-#[derive(Serialize, Deserialize, Clone, Debug)]
-#[serde(rename_all = "kebab-case")]
-pub struct RpcVersionInfo {
-    /// The current version of solana-core
-    pub solana_core: String,
-}
-
 #[rpc(server)]
 pub trait RpcSol {
     type Metadata;

core/tests/client.rs

@@ -18,8 +18,8 @@ fn test_rpc_client() {
     let client = RpcClient::new_socket(leader_data.rpc);
 
     assert_eq!(
-        client.get_version().unwrap(),
-        format!("{{\"solana-core\":\"{}\"}}", solana_core::version!())
+        client.get_version().unwrap().solana_core,
+        solana_core::version!()
     );
 
     assert_eq!(client.get_balance(&bob_pubkey).unwrap(), 0);