fix(baseapp): signal then panic at halt-height

CHANGELOG-Agoric.md

@@ -41,6 +41,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 * (auth, bank) Agoric/agoric-sdk#8989 Remove deprecated lien support
 
+### Bug Fixes
+
+* (baseapp) [#338](https://github.com/agoric-labs/cosmos-sdk/pull/338) Make sure we don't execute blocks beyond the halt height. Restored from [#305](https://github.com/agoric-labs/cosmos-sdk/pull/305) but compatible with older `SIGINT`, `SIGTERM` logic
+
 ## `v0.46.16-alpha.agoric.2.4` - 2024-04-19
 
 ### Improvements
@@ -99,7 +103,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Bug Fixes
 
-* (baseapp) [#337](https://github.com/agoric-labs/cosmos-sdk/pull/337) revert #305 which causes test failures in agoric-sdk
+* (baseapp) [#337](https://github.com/agoric-labs/cosmos-sdk/pull/337) revert [#305](https://github.com/agoric-labs/cosmos-sdk/pull/305) which causes test failures in agoric-sdk
 
 ## `v0.45.16-alpha.agoric.1` - 2023-09-22
 

Makefile

@@ -318,7 +318,7 @@ test-cover:
 
 test-rosetta:
 	docker build -t rosetta-ci:latest -f contrib/rosetta/rosetta-ci/Dockerfile .
-	docker-compose -f contrib/rosetta/docker-compose.yaml up --abort-on-container-exit --exit-code-from test_rosetta --build
+	docker compose -f contrib/rosetta/docker-compose.yaml up --abort-on-container-exit --exit-code-from test_rosetta --build
 .PHONY: test-rosetta
 
 benchmark:
@@ -467,10 +467,10 @@ localnet-build-dlv:
 localnet-build-nodes:
 	$(DOCKER) run --rm -v $(CURDIR)/.testnets:/data cosmossdk/simd \
 			  testnet init-files --v 4 -o /data --starting-ip-address 192.168.10.2 --keyring-backend=test
-	docker-compose up -d
+	docker compose up -d
 
 localnet-stop:
-	docker-compose down
+	docker compose down
 
 # localnet-start will run a 4-node testnet locally. The nodes are
 # based off the docker images in: ./contrib/images/simd-env

baseapp/abci.go

@@ -139,6 +139,8 @@
 		))
 	}
 
+	app.checkHalt(req.Header.Height, req.Header.Time)
+
 	if err := app.validateHeight(req); err != nil {
 		panic(err)
 	}
@@ -272,7 +274,7 @@
 	// deliverTxWithoutEventHistory is the upstream cosmos-sdk DeliverTx.
 	res = app.deliverTxWithoutEventHistory(req)
 	// When successful, remember event history.
 	if res.Code == sdkerrors.SuccessABCICode {
 		app.deliverState.eventHistory = append(app.deliverState.eventHistory, res.Events...)
 	}
 	return res
@@ -312,6 +314,47 @@
 	}
 }
 
+// checkHalt forces a state machine halt and attempts to kill the current
+// process if block height or timestamp exceeds halt-height or halt-time
+// respectively.
+func (app *BaseApp) checkHalt(blockHeight int64, blockTime time.Time) {
+	var halt bool
+	if app.haltHeight > 0 && uint64(blockHeight) > app.haltHeight {
+		// height to halt has passed
+		halt = true
+	} else if app.haltTime > 0 && blockTime.Unix() > int64(app.haltTime) {
+		// time to halt has passed
+		halt = true
+	}
+
+	if !halt {
+		return
+	}
+
+	app.logger.Info(
+		"halt per configuration",
+		"haltHeight", app.haltHeight,
+		"haltTime", app.haltTime,
+		"blockHeight", blockHeight,
+		"blockTime", blockTime,
+	)
+
+	// [AGORIC] Make a best-effort attempt to kill our process.
+	p, err := os.FindProcess(os.Getpid())
+	if err == nil {
+		// attempt cascading signals in case SIGINT fails (os dependent)
+		_ = p.Signal(syscall.SIGINT)
+		_ = p.Signal(syscall.SIGTERM)
+		// Errors in these signal calls are not meaningful to us.  We tried our
+		// best, but we don't care (and can't tell) if or how the signal handler
+		// responds.
+	}
+
+	// Prevent the state machine from advancing to the next block, no matter how
+	// the signals were handled.
+	panic(errors.New("halt application"))
+}
+
 // Commit implements the ABCI interface. It will commit all state that exists in
 // the deliver state's multi-store and includes the resulting commit ID in the
 // returned abci.ResponseCommit. Commit will set the check state based on the
@@ -368,53 +411,13 @@
 	// empty/reset the deliver state
 	app.deliverState = nil
 
-	var halt bool
-
-	switch {
-	case app.haltHeight > 0 && uint64(header.Height) >= app.haltHeight:
-		halt = true
-
-	case app.haltTime > 0 && header.Time.Unix() >= int64(app.haltTime):
-		halt = true
-	}
-
-	if halt {
-		// Halt the binary and allow Tendermint to receive the ResponseCommit
-		// response with the commit ID hash. This will allow the node to successfully
-		// restart and process blocks assuming the halt configuration has been
-		// reset or moved to a more distant value.
-		app.halt()
-	}
-
 	if app.snapshotManager.ShouldTakeSnapshot(header.Height) {
 		snapshotHeight = header.Height
 	}
 
 	return res, snapshotHeight
 }
 
-// halt attempts to gracefully shutdown the node via SIGINT and SIGTERM falling
-// back on os.Exit if both fail.
-func (app *BaseApp) halt() {
-	app.logger.Info("halting node per configuration", "height", app.haltHeight, "time", app.haltTime)
-
-	p, err := os.FindProcess(os.Getpid())
-	if err == nil {
-		// attempt cascading signals in case SIGINT fails (os dependent)
-		sigIntErr := p.Signal(syscall.SIGINT)
-		sigTermErr := p.Signal(syscall.SIGTERM)
-
-		if sigIntErr == nil || sigTermErr == nil {
-			return
-		}
-	}
-
-	// Resort to exiting immediately if the process could not be found or killed
-	// via SIGINT/SIGTERM signals.
-	app.logger.Info("failed to send SIGINT/SIGTERM; exiting...")
-	os.Exit(0)
-}
-
 // Snapshot takes a snapshot of the current state and prunes any old snapshottypes.
 // It should be started as a goroutine
 func (app *BaseApp) Snapshot(height int64) {

baseapp/abci_test.go

@@ -3,7 +3,12 @@ package baseapp
 import (
 	"encoding/json"
 	"fmt"
+	"os"
+	"os/signal"
+	"strings"
+	"syscall"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/require"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -224,3 +229,71 @@ func (ps *paramStore) Get(_ sdk.Context, key []byte, ptr interface{}) {
 		panic(err)
 	}
 }
+
+func TestABCI_HaltChain(t *testing.T) {
+	logger := defaultLogger()
+	db := dbm.NewMemDB()
+	name := t.Name()
+
+	testCases := []struct {
+		name        string
+		haltHeight  uint64
+		haltTime    uint64
+		blockHeight int64
+		blockTime   int64
+		expHalt     bool
+	}{
+		{"default", 0, 0, 10, 0, false},
+		{"halt-height-edge", 10, 0, 10, 0, false},
+		{"halt-height", 10, 0, 11, 0, true},
+		{"halt-time-edge", 0, 10, 1, 10, false},
+		{"halt-time", 0, 10, 1, 11, true},
+	}
+
+	sigs := make(chan os.Signal, 5)
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			if tc.expHalt {
+				signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
+			}
+
+			defer func() {
+				rec := recover()
+				signal.Stop(sigs)
+				var err error
+				if rec != nil {
+					err = rec.(error)
+				}
+				if !tc.expHalt {
+					require.NoError(t, err)
+				} else {
+					// ensure that we received the correct signals
+					require.Equal(t, syscall.SIGINT, <-sigs)
+					require.Equal(t, syscall.SIGTERM, <-sigs)
+					require.Equal(t, len(sigs), 0)
+
+					// Check our error message.
+					require.Error(t, err)
+					require.True(t, strings.HasPrefix(err.Error(), "halt application"))
+				}
+			}()
+
+			app := NewBaseApp(
+				name, logger, db, nil,
+				SetHaltHeight(tc.haltHeight),
+				SetHaltTime(tc.haltTime),
+			)
+
+			app.InitChain(abci.RequestInitChain{
+				InitialHeight: tc.blockHeight,
+			})
+
+			app.BeginBlock(abci.RequestBeginBlock{
+				Header: tmproto.Header{
+					Height: tc.blockHeight,
+					Time:   time.Unix(tc.blockTime, 0),
+				},
+			})
+		})
+	}
+}