rpc: add application info to status call (#7701)

* rpc/coretypes: add `ApplicationInfo` to `ResultStatus`
* internal/rpc/core: return application version

Co-authored-by: William Banfield <4561443+williambanfield@users.noreply.github.com>
Co-authored-by: M. J. Fromberger <michael.j.fromberger@gmail.com>

CHANGELOG_PENDING.md

@@ -47,6 +47,7 @@ Special thanks to external contributors on this release:
 ### FEATURES
 
 - [rpc] [\#7270](https://github.com/tendermint/tendermint/pull/7270) Add `header` and `header_by_hash` RPC Client queries. (@fedekunze)
+- [rpc] [\#7701] Add `ApplicationInfo` to `status` rpc call which contains the application version. (@jonasbostoen)
 - [cli] [#7033](https://github.com/tendermint/tendermint/pull/7033) Add a `rollback` command to rollback to the previous tendermint state in the event of non-determinstic app hash or reverting an upgrade.
 - [mempool, rpc] \#7041  Add removeTx operation to the RPC layer. (@tychoish)
 - [consensus] \#7354 add a new `synchrony` field to the `ConsensusParameter` struct for controlling the parameters of the proposer-based timestamp algorithm. (@williambanfield)

internal/rpc/core/status.go

@@ -3,6 +3,7 @@ package core
 import (
 	"bytes"
 	"context"
+	"fmt"
 	"time"
 
 	tmbytes "github.com/tendermint/tendermint/libs/bytes"
@@ -59,8 +60,14 @@ func (env *Environment) Status(ctx context.Context) (*coretypes.ResultStatus, er
 		}
 	}
 
+	var applicationInfo coretypes.ApplicationInfo
+	if abciInfo, err := env.ABCIInfo(ctx); err == nil {
+		applicationInfo.Version = fmt.Sprint(abciInfo.Response.AppVersion)
+	}
+
 	result := &coretypes.ResultStatus{
-		NodeInfo: env.P2PTransport.NodeInfo(),
+		NodeInfo:        env.P2PTransport.NodeInfo(),
+		ApplicationInfo: applicationInfo,
 		SyncInfo: coretypes.SyncInfo{
 			LatestBlockHash:     latestBlockHash,
 			LatestAppHash:       latestAppHash,

rpc/coretypes/responses.go

@@ -116,6 +116,10 @@ type SyncInfo struct {
 	BackFillBlocksTotal int64         `json:"backfill_blocks_total,string"`
 }
 
+type ApplicationInfo struct {
+	Version string `json:"version"`
+}
+
 // Info about the node's validator
 type ValidatorInfo struct {
 	Address     bytes.HexBytes
@@ -155,6 +159,7 @@ func (v *ValidatorInfo) UnmarshalJSON(data []byte) error {
 // Node Status
 type ResultStatus struct {
 	NodeInfo        types.NodeInfo        `json:"node_info"`
+	ApplicationInfo ApplicationInfo       `json:"application_info,omitempty"`
 	SyncInfo        SyncInfo              `json:"sync_info"`
 	ValidatorInfo   ValidatorInfo         `json:"validator_info"`
 	LightClientInfo types.LightClientInfo `json:"light_client_info,omitempty"`