feat: emit more data in prom metrics

CHANGELOG.md

@@ -57,6 +57,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (x/bank) [#14894](https://github.com/cosmos/cosmos-sdk/pull/14894) Return a human readable denomination for IBC vouchers when querying bank balances. Added a `ResolveDenom` parameter to `types.QueryAllBalancesRequest` and `--resolve-denom` flag to `GetBalancesCmd()`.
 * (x/gov) [#15151](https://github.com/cosmos/cosmos-sdk/pull/15151) Add `burn_vote_quorum`, `burn_proposal_deposit_prevote` and `burn_vote_veto` params to allow applications to decide if they would like to burn deposits
 * (runtime) [#15547](https://github.com/cosmos/cosmos-sdk/pull/15547) Allow runtime to pass event core api service to modules
+* (telemetry) [#15657](https://github.com/cosmos/cosmos-sdk/pull/15657) Emit more data (go version, sdk version, upgrade height) in prom metrics
 
 ### Improvements
 

server/start.go

@@ -8,6 +8,7 @@ import (
 	"runtime/pprof"
 
 	pruningtypes "cosmossdk.io/store/pruning/types"
+	"github.com/armon/go-metrics"
 	"github.com/cometbft/cometbft/abci/server"
 	cmtcmd "github.com/cometbft/cometbft/cmd/cometbft/commands"
 	"github.com/cometbft/cometbft/node"
@@ -32,6 +33,7 @@ import (
 	"github.com/cosmos/cosmos-sdk/server/types"
 	"github.com/cosmos/cosmos-sdk/telemetry"
 	"github.com/cosmos/cosmos-sdk/types/mempool"
+	"github.com/cosmos/cosmos-sdk/version"
 	genutiltypes "github.com/cosmos/cosmos-sdk/x/genutil/types"
 )
 
@@ -225,6 +227,8 @@ func startStandAlone(svrCtx *Context, appCreator types.AppCreator) error {
 		return err
 	}
 
+	emitServerInfoMetrics()
+
 	svr, err := server.NewServer(addr, transport, app)
 	if err != nil {
 		return fmt.Errorf("error creating listener: %v", err)
@@ -354,6 +358,8 @@ func startInProcess(svrCtx *Context, clientCtx client.Context, appCreator types.
 		return err
 	}
 
+	emitServerInfoMetrics()
+
 	var (
 		apiSrv  *api.Server
 		grpcSrv *grpc.Server
@@ -505,3 +511,22 @@ func wrapCPUProfile(svrCtx *Context, callbackFn func() error) error {
 
 	return <-errCh
 }
+
+// emitServerInfoMetrics emits server info related metrics using application telemetry.
+func emitServerInfoMetrics() {
+	var ls []metrics.Label
+
+	versionInfo := version.NewInfo()
+	if len(versionInfo.GoVersion) > 0 {
+		ls = append(ls, telemetry.NewLabel("go", versionInfo.GoVersion))
+	}
+	if len(versionInfo.CosmosSdkVersion) > 0 {
+		ls = append(ls, telemetry.NewLabel("version", versionInfo.CosmosSdkVersion))
+	}
+
+	if len(ls) == 0 {
+		return
+	}
+
+	telemetry.SetGaugeWithLabels([]string{"server", "info"}, 1, ls)
+}

x/upgrade/keeper/keeper.go

@@ -8,6 +8,7 @@ import (
 	"path"
 	"path/filepath"
 	"sort"
+	"strconv"
 
 	errorsmod "cosmossdk.io/errors"
 	"cosmossdk.io/log"
@@ -16,7 +17,9 @@ import (
 	xp "cosmossdk.io/x/upgrade/exported"
 	"cosmossdk.io/x/upgrade/types"
 
+	"github.com/armon/go-metrics"
 	"github.com/cosmos/cosmos-sdk/codec"
+	"github.com/cosmos/cosmos-sdk/telemetry"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 	"github.com/cosmos/cosmos-sdk/types/kv"
@@ -46,7 +49,7 @@ type Keeper struct {
 // homePath - root directory of the application's config
 // vs - the interface implemented by baseapp which allows setting baseapp's protocol version field
 func NewKeeper(skipUpgradeHeights map[int64]bool, storeKey storetypes.StoreKey, cdc codec.BinaryCodec, homePath string, vs xp.ProtocolVersionSetter, authority string) *Keeper {
-	return &Keeper{
+	k := &Keeper{
 		homePath:           homePath,
 		skipUpgradeHeights: skipUpgradeHeights,
 		storeKey:           storeKey,
@@ -55,6 +58,12 @@ func NewKeeper(skipUpgradeHeights map[int64]bool, storeKey storetypes.StoreKey,
 		versionSetter:      vs,
 		authority:          authority,
 	}
+
+	if upgradePlan, err := k.ReadUpgradeInfoFromDisk(); err == nil && upgradePlan.Height > 0 {
+		telemetry.SetGaugeWithLabels([]string{"server", "info"}, 1, []metrics.Label{telemetry.NewLabel("upgrade_height", strconv.FormatInt(upgradePlan.Height, 10))})
+	}
+
+	return k
 }
 
 // SetVersionSetter sets the interface implemented by baseapp which allows setting baseapp's protocol version field
@@ -217,6 +226,8 @@ func (k Keeper) ScheduleUpgrade(ctx sdk.Context, plan types.Plan) error {
 	bz := k.cdc.MustMarshal(&plan)
 	store.Set(types.PlanKey(), bz)
 
+	telemetry.SetGaugeWithLabels([]string{"server", "info"}, 1, []metrics.Label{telemetry.NewLabel("upgrade_height", strconv.FormatInt(plan.Height, 10))})
+
 	return nil
 }