`solana catchup` now detects when you try to catchup to yourself (#8635)

automerge

cli/src/cluster_query.rs

@@ -394,6 +394,19 @@ pub fn process_catchup(
         )
     };
 
+    let reported_node_pubkey = node_client.get_identity()?;
+    if reported_node_pubkey != *node_pubkey {
+        return Err(format!(
+            "The identity reported by node RPC URL does not match.  Expected: {:?}.  Reported: {:?}",
+            node_pubkey, reported_node_pubkey
+        )
+        .into());
+    }
+
+    if rpc_client.get_identity()? == *node_pubkey {
+        return Err("Both RPC URLs reference the same node, unable to monitor for catchup.  Try a different --url".into());
+    }
+
     let progress_bar = new_spinner_progress_bar();
     progress_bar.set_message("Connecting...");
 

client/src/rpc_client.rs

@@ -6,8 +6,8 @@ use crate::{
     rpc_request::RpcRequest,
     rpc_response::{
         Response, RpcAccount, RpcBlockhashFeeCalculator, RpcConfirmedBlock, RpcContactInfo,
-        RpcEpochInfo, RpcFeeRateGovernor, RpcKeyedAccount, RpcLeaderSchedule, RpcResponse,
-        RpcVersionInfo, RpcVoteAccountStatus,
+        RpcEpochInfo, RpcFeeRateGovernor, RpcIdentity, RpcKeyedAccount, RpcLeaderSchedule,
+        RpcResponse, RpcVersionInfo, RpcVoteAccountStatus,
     },
 };
 use bincode::serialize;
@@ -356,6 +356,34 @@ impl RpcClient {
         })
     }
 
+    pub fn get_identity(&self) -> io::Result<Pubkey> {
+        let response = self
+            .client
+            .send(&RpcRequest::GetIdentity, Value::Null, 0)
+            .map_err(|err| {
+                io::Error::new(
+                    io::ErrorKind::Other,
+                    format!("GetIdentity request failure: {:?}", err),
+                )
+            })?;
+
+        serde_json::from_value(response)
+            .map_err(|err| {
+                io::Error::new(
+                    io::ErrorKind::Other,
+                    format!("GetIdentity failure: {:?}", err),
+                )
+            })
+            .and_then(|rpc_identity: RpcIdentity| {
+                rpc_identity.identity.parse::<Pubkey>().map_err(|err| {
+                    io::Error::new(
+                        io::ErrorKind::Other,
+                        format!("GetIdentity invalid pubkey failure: {:?}", err),
+                    )
+                })
+            })
+    }
+
     pub fn get_inflation(&self) -> io::Result<Inflation> {
         let response = self
             .client

client/src/rpc_request.rs

@@ -15,6 +15,7 @@ pub enum RpcRequest {
     GetEpochInfo,
     GetEpochSchedule,
     GetGenesisHash,
+    GetIdentity,
     GetInflation,
     GetLeaderSchedule,
     GetNumBlocksSinceSignatureConfirmation,
@@ -55,6 +56,7 @@ impl RpcRequest {
             RpcRequest::GetEpochInfo => "getEpochInfo",
             RpcRequest::GetEpochSchedule => "getEpochSchedule",
             RpcRequest::GetGenesisHash => "getGenesisHash",
+            RpcRequest::GetIdentity => "getIdentity",
             RpcRequest::GetInflation => "getInflation",
             RpcRequest::GetLeaderSchedule => "getLeaderSchedule",
             RpcRequest::GetNumBlocksSinceSignatureConfirmation => {

client/src/rpc_response.rs

@@ -241,6 +241,13 @@ pub struct RpcVersionInfo {
     pub solana_core: String,
 }
 
+#[derive(Serialize, Deserialize, Clone, Debug)]
+#[serde(rename_all = "kebab-case")]
+pub struct RpcIdentity {
+    /// The current node identity pubkey
+    pub identity: String,
+}
+
 #[derive(Serialize, Deserialize, Clone, Debug)]
 #[serde(rename_all = "camelCase")]
 pub struct RpcVoteAccountStatus {

core/src/rpc.rs

@@ -9,9 +9,9 @@ use jsonrpc_core::{Error, Metadata, Result};
 use jsonrpc_derive::rpc;
 use solana_client::rpc_response::{
     Response, RpcAccount, RpcBlockCommitment, RpcBlockhashFeeCalculator, RpcConfirmedBlock,
-    RpcContactInfo, RpcEpochInfo, RpcFeeRateGovernor, RpcKeyedAccount, RpcLeaderSchedule,
-    RpcResponseContext, RpcSignatureConfirmation, RpcStorageTurn, RpcTransactionEncoding,
-    RpcVersionInfo, RpcVoteAccountInfo, RpcVoteAccountStatus,
+    RpcContactInfo, RpcEpochInfo, RpcFeeRateGovernor, RpcIdentity, RpcKeyedAccount,
+    RpcLeaderSchedule, RpcResponseContext, RpcSignatureConfirmation, RpcStorageTurn,
+    RpcTransactionEncoding, RpcVersionInfo, RpcVoteAccountInfo, RpcVoteAccountStatus,
 };
 use solana_faucet::faucet::request_airdrop_transaction;
 use solana_ledger::{
@@ -49,6 +49,7 @@ fn new_response<T>(bank: &Bank, value: T) -> RpcResponse<T> {
 pub struct JsonRpcConfig {
     pub enable_validator_exit: bool,
     pub enable_get_confirmed_block: bool,
+    pub identity_pubkey: Pubkey,
     pub faucet_addr: Option<SocketAddr>,
 }
 
@@ -594,6 +595,9 @@ pub trait RpcSol {
         commitment: Option<CommitmentConfig>,
     ) -> Result<Option<RpcSignatureConfirmation>>;
 
+    #[rpc(meta, name = "getIdentity")]
+    fn get_identity(&self, meta: Self::Metadata) -> Result<RpcIdentity>;
+
     #[rpc(meta, name = "getVersion")]
     fn get_version(&self, meta: Self::Metadata) -> Result<RpcVersionInfo>;
 
@@ -1076,6 +1080,18 @@ impl RpcSol for RpcSolImpl {
         meta.request_processor.read().unwrap().validator_exit()
     }
 
+    fn get_identity(&self, meta: Self::Metadata) -> Result<RpcIdentity> {
+        Ok(RpcIdentity {
+            identity: meta
+                .request_processor
+                .read()
+                .unwrap()
+                .config
+                .identity_pubkey
+                .to_string(),
+        })
+    }
+
     fn get_version(&self, _: Self::Metadata) -> Result<RpcVersionInfo> {
         Ok(RpcVersionInfo {
             solana_core: solana_clap_utils::version!().to_string(),
@@ -1269,6 +1285,7 @@ pub mod tests {
         let request_processor = Arc::new(RwLock::new(JsonRpcRequestProcessor::new(
             JsonRpcConfig {
                 enable_get_confirmed_block: true,
+                identity_pubkey: *pubkey,
                 ..JsonRpcConfig::default()
             },
             bank_forks.clone(),
@@ -1996,6 +2013,27 @@ pub mod tests {
         assert_eq!(exit.load(Ordering::Relaxed), true);
     }
 
+    #[test]
+    fn test_rpc_get_identity() {
+        let bob_pubkey = Pubkey::new_rand();
+        let RpcHandler { io, meta, .. } = start_rpc_handler_with_tx(&bob_pubkey);
+
+        let req = format!(r#"{{"jsonrpc":"2.0","id":1,"method":"getIdentity"}}"#);
+        let res = io.handle_request_sync(&req, meta);
+        let expected = json!({
+            "jsonrpc": "2.0",
+            "result": {
+                "identity": bob_pubkey.to_string()
+            },
+            "id": 1
+        });
+        let expected: Response =
+            serde_json::from_value(expected).expect("expected response deserialization");
+        let result: Response = serde_json::from_str(&res.expect("actual response"))
+            .expect("actual response deserialization");
+        assert_eq!(expected, result);
+    }
+
     #[test]
     fn test_rpc_get_version() {
         let bob_pubkey = Pubkey::new_rand();

docs/src/apps/jsonrpc-api.md

@@ -26,6 +26,7 @@ To interact with a Solana node inside a JavaScript application, use the [solana-
 * [getEpochSchedule](jsonrpc-api.md#getepochschedule)
 * [getFeeRateGovernor](jsonrpc-api.md#getfeerategovernor)
 * [getGenesisHash](jsonrpc-api.md#getgenesishash)
+* [getIdentity](jsonrpc-api.md#getidentity)
 * [getInflation](jsonrpc-api.md#getinflation)
 * [getLeaderSchedule](jsonrpc-api.md#getleaderschedule)
 * [getMinimumBalanceForRentExemption](jsonrpc-api.md#getminimumbalanceforrentexemption)
@@ -454,6 +455,29 @@ curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "m
 {"jsonrpc":"2.0","result":"GH7ome3EiwEr7tu9JuTh2dpYWBJK3z69Xm1ZE3MEE6JC","id":1}
 ```
 
+### getIdentity
+
+Returns the identity pubkey for the current node
+
+#### Parameters:
+
+None
+
+#### Results:
+
+The result field will be a JSON object with the following fields:
+
+* `identity`, the identity pubkey of the current node \(as a base-58 encoded string\)
+
+#### Example:
+
+```bash
+// Request
+curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getIdentity"}' http://localhost:8899
+// Result
+{"jsonrpc":"2.0","result":{"identity": "2r1F4iWqVcb8M1DbAjQuFpebkQHY9hcVU4WuW2DJBppN"},"id":1}
+```
+
 ### getInflation
 
 Returns the inflation configuration of the cluster

validator/src/main.rs

@@ -903,6 +903,7 @@ pub fn main() {
         rpc_config: JsonRpcConfig {
             enable_validator_exit: matches.is_present("enable_rpc_exit"),
             enable_get_confirmed_block: matches.is_present("enable_rpc_get_confirmed_block"),
+            identity_pubkey: identity_keypair.pubkey(),
             faucet_addr: matches.value_of("rpc_faucet_addr").map(|address| {
                 solana_net_utils::parse_host_port(address).expect("failed to parse faucet address")
             }),