From 7188b1cdb7f8991bf90d9316ff0be847760b7e78 Mon Sep 17 00:00:00 2001
From: Antoine Eddi <5222525+aeddi@users.noreply.github.com>
Date: Wed, 20 Nov 2024 02:14:18 +0100
Subject: [PATCH] feat: add gnohealth cli tool (#3158)
This PR adds a tool to the contribs dedicated to adding subcommands for
health checks. The first available subcommand simply detects timestamp
drift on a given chain.
This test was useful in the context of this issue:
https://github.com/gnolang/gno/issues/1950.
However, it could later run on a dedicated server or on a GitHub Actions
cron job to alert us in case significant drift occurs again.
Results on test5 :
```
> gnohealth timestamp -ws -remote 'wss://rpc.test5.gno.land:443/websocket' -verbose
block 411344 drifted of 3.094940942s (max 10s): OK
block 411345 drifted of 2.368750176s (max 10s): OK
block 411346 drifted of 2.310184977s (max 10s): OK
block 411347 drifted of 2.158713327s (max 10s): OK
block 411348 drifted of 2.203484957s (max 10s): OK
block 411349 drifted of 2.156479203s (max 10s): OK
block 411350 drifted of 2.155613458s (max 10s): OK
block 411351 drifted of 2.296832155s (max 10s): OK
block 411352 drifted of 2.132230389s (max 10s): OK
block 411353 drifted of 2.181071735s (max 10s): OK
block 411354 drifted of 2.575055701s (max 10s): OK
block 411355 drifted of 2.034728695s (max 10s): OK
block 411356 drifted of 2.285932658s (max 10s): OK
block 411357 drifted of 2.330991247s (max 10s): OK
block 411358 drifted of 2.365136593s (max 10s): OK
block 411359 drifted of 2.035198868s (max 10s): OK
block 411360 drifted of 2.128274141s (max 10s): OK
block 411361 drifted of 2.48608003s (max 10s): OK
block 411362 drifted of 2.072144703s (max 10s): OK
block 411363 drifted of 2.297280076s (max 10s): OK
block 411364 drifted of 2.224310386s (max 10s): OK
no timestamp drifted beyond the maximum delta (average 2.280639734s)
```
Results on test4 :
```
> gnohealth timestamp -ws -remote 'wss://rpc.test4.gno.land:443/websocket' -verbose
block 3618022 drifted of 3.765561468s (max 10s): OK
block 3618023 drifted of 3.697091353s (max 10s): OK
block 3618024 drifted of 3.576602477s (max 10s): OK
block 3618025 drifted of 3.542585771s (max 10s): OK
block 3618026 drifted of 3.72231133s (max 10s): OK
block 3618027 drifted of 3.751154575s (max 10s): OK
block 3618028 drifted of 8.312827308s (max 10s): OK
block 3618029 drifted of 3.712806121s (max 10s): OK
block 3618030 drifted of 3.65324572s (max 10s): OK
no timestamp drifted beyond the maximum delta (average 4.192687347s)
```
Contributors' checklist...
- [x] Added new tests, or not needed, or not feasible
- [x] Provided an example (e.g. screenshot) to aid review or the PR is
self-explanatory
- [x] Updated the official documentation or not needed
- [x] No breaking changes were made, or a `BREAKING CHANGE: xxx` message
was included in the description
- [x] Added references to related issues and PRs
- [ ] Provided any useful hints for running manual tests
---
contribs/gnohealth/Makefile | 17 ++
contribs/gnohealth/go.mod | 46 ++++
contribs/gnohealth/go.sum | 199 ++++++++++++++++++
contribs/gnohealth/health.go | 24 +++
.../gnohealth/internal/timestamp/timestamp.go | 166 +++++++++++++++
contribs/gnohealth/main.go | 14 ++
6 files changed, 466 insertions(+)
create mode 100644 contribs/gnohealth/Makefile
create mode 100644 contribs/gnohealth/go.mod
create mode 100644 contribs/gnohealth/go.sum
create mode 100644 contribs/gnohealth/health.go
create mode 100644 contribs/gnohealth/internal/timestamp/timestamp.go
create mode 100644 contribs/gnohealth/main.go
diff --git a/contribs/gnohealth/Makefile b/contribs/gnohealth/Makefile
new file mode 100644
index 00000000000..61c6e8c79ea
--- /dev/null
+++ b/contribs/gnohealth/Makefile
@@ -0,0 +1,17 @@
+rundep := go run -modfile ../../misc/devdeps/go.mod
+golangci_lint := $(rundep) github.com/golangci/golangci-lint/cmd/golangci-lint
+
+
+.PHONY: install
+install:
+ go install .
+
+.PHONY: build
+build:
+ go build -o build/gnohealth .
+
+lint:
+ $(golangci_lint) --config ../../.github/golangci.yml run ./...
+
+test:
+ @echo "XXX: add tests"
diff --git a/contribs/gnohealth/go.mod b/contribs/gnohealth/go.mod
new file mode 100644
index 00000000000..e6d9f119c7b
--- /dev/null
+++ b/contribs/gnohealth/go.mod
@@ -0,0 +1,46 @@
+module github.com/gnolang/gno/contribs/gnohealth
+
+go 1.22.4
+
+replace github.com/gnolang/gno => ../..
+
+require github.com/gnolang/gno v0.0.0-00010101000000-000000000000
+
+require (
+ github.com/btcsuite/btcd/btcec/v2 v2.3.4 // indirect
+ github.com/btcsuite/btcd/btcutil v1.1.6 // indirect
+ github.com/cenkalti/backoff/v4 v4.3.0 // indirect
+ github.com/davecgh/go-spew v1.1.1 // indirect
+ github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0 // indirect
+ github.com/gnolang/overflow v0.0.0-20170615021017-4d914c927216 // indirect
+ github.com/go-logr/logr v1.4.2 // indirect
+ github.com/go-logr/stdr v1.2.2 // indirect
+ github.com/google/uuid v1.6.0 // indirect
+ github.com/gorilla/websocket v1.5.3 // indirect
+ github.com/grpc-ecosystem/grpc-gateway/v2 v2.22.0 // indirect
+ github.com/libp2p/go-buffer-pool v0.1.0 // indirect
+ github.com/peterbourgon/ff/v3 v3.4.0 // indirect
+ github.com/pmezard/go-difflib v1.0.0 // indirect
+ github.com/rs/xid v1.6.0 // indirect
+ github.com/stretchr/testify v1.9.0 // indirect
+ go.opentelemetry.io/otel v1.29.0 // indirect
+ go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.29.0 // indirect
+ go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.29.0 // indirect
+ go.opentelemetry.io/otel/metric v1.29.0 // indirect
+ go.opentelemetry.io/otel/sdk v1.29.0 // indirect
+ go.opentelemetry.io/otel/sdk/metric v1.29.0 // indirect
+ go.opentelemetry.io/otel/trace v1.29.0 // indirect
+ go.opentelemetry.io/proto/otlp v1.3.1 // indirect
+ golang.org/x/crypto v0.26.0 // indirect
+ golang.org/x/exp v0.0.0-20240613232115-7f521ea00fb8 // indirect
+ golang.org/x/mod v0.20.0 // indirect
+ golang.org/x/net v0.28.0 // indirect
+ golang.org/x/sys v0.24.0 // indirect
+ golang.org/x/term v0.23.0 // indirect
+ golang.org/x/text v0.17.0 // indirect
+ google.golang.org/genproto/googleapis/api v0.0.0-20240822170219-fc7c04adadcd // indirect
+ google.golang.org/genproto/googleapis/rpc v0.0.0-20240822170219-fc7c04adadcd // indirect
+ google.golang.org/grpc v1.65.0 // indirect
+ google.golang.org/protobuf v1.35.1 // indirect
+ gopkg.in/yaml.v3 v3.0.1 // indirect
+)
diff --git a/contribs/gnohealth/go.sum b/contribs/gnohealth/go.sum
new file mode 100644
index 00000000000..116cfbff021
--- /dev/null
+++ b/contribs/gnohealth/go.sum
@@ -0,0 +1,199 @@
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diff --git a/contribs/gnohealth/health.go b/contribs/gnohealth/health.go
new file mode 100644
index 00000000000..5118cac5fa5
--- /dev/null
+++ b/contribs/gnohealth/health.go
@@ -0,0 +1,24 @@
+package main
+
+import (
+ "github.com/gnolang/gno/contribs/gnohealth/internal/timestamp"
+ "github.com/gnolang/gno/tm2/pkg/commands"
+)
+
+func newHealthCmd(io commands.IO) *commands.Command {
+ cmd := commands.NewCommand(
+ commands.Metadata{
+ ShortUsage: " [flags] [...]",
+ ShortHelp: "gno health check suite",
+ LongHelp: "Gno health check suite, to verify that different parts of Gno are working correctly",
+ },
+ commands.NewEmptyConfig(),
+ commands.HelpExec,
+ )
+
+ cmd.AddSubCommands(
+ timestamp.NewTimestampCmd(io),
+ )
+
+ return cmd
+}
diff --git a/contribs/gnohealth/internal/timestamp/timestamp.go b/contribs/gnohealth/internal/timestamp/timestamp.go
new file mode 100644
index 00000000000..50521b9130f
--- /dev/null
+++ b/contribs/gnohealth/internal/timestamp/timestamp.go
@@ -0,0 +1,166 @@
+package timestamp
+
+import (
+ "context"
+ "flag"
+ "fmt"
+ "time"
+
+ rpcClient "github.com/gnolang/gno/tm2/pkg/bft/rpc/client"
+ "github.com/gnolang/gno/tm2/pkg/commands"
+)
+
+const (
+ defaultRemoteAddress = "http://127.0.0.1:26657"
+ defaultWebSocket = true
+ defaultCheckDuration = 30 * time.Second
+ defaultCheckInterval = 50 * time.Millisecond
+ defaultMaxDelta = 10 * time.Second
+ defaultVerbose = false
+)
+
+type timestampCfg struct {
+ remoteAddress string
+ webSocket bool
+ checkDuration time.Duration
+ checkInterval time.Duration
+ maxDelta time.Duration
+ verbose bool
+}
+
+// NewTimestampCmd creates the gnohealth timestamp subcommand
+func NewTimestampCmd(io commands.IO) *commands.Command {
+ cfg := ×tampCfg{}
+
+ return commands.NewCommand(
+ commands.Metadata{
+ Name: "timestamp",
+ ShortUsage: "[flags]",
+ ShortHelp: "check if block timestamps are drifting",
+ LongHelp: "This command checks if block timestamps are drifting on a blockchain by connecting to a specified node via RPC.",
+ },
+ cfg,
+ func(_ context.Context, _ []string) error {
+ return execTimestamp(cfg, io)
+ },
+ )
+}
+
+// RegisterFlags registers command-line flags for the timestamp command
+func (c *timestampCfg) RegisterFlags(fs *flag.FlagSet) {
+ fs.StringVar(
+ &c.remoteAddress,
+ "remote",
+ defaultRemoteAddress,
+ "the remote address of the node to connect to via RPC",
+ )
+
+ fs.BoolVar(
+ &c.webSocket,
+ "ws",
+ defaultWebSocket,
+ "flag indicating whether to use the WebSocket protocol for RPC",
+ )
+
+ fs.DurationVar(
+ &c.checkDuration,
+ "duration",
+ defaultCheckDuration,
+ "duration for which checks should be performed",
+ )
+
+ fs.DurationVar(
+ &c.checkInterval,
+ "interval",
+ defaultCheckInterval,
+ "interval between consecutive checks",
+ )
+
+ fs.DurationVar(
+ &c.maxDelta,
+ "max-delta",
+ defaultMaxDelta,
+ "maximum allowable time difference between the current time and the last block time",
+ )
+
+ fs.BoolVar(
+ &c.verbose,
+ "verbose",
+ defaultVerbose,
+ "flag indicating whether to enable verbose logging",
+ )
+}
+
+func execTimestamp(cfg *timestampCfg, io commands.IO) error {
+ var (
+ client *rpcClient.RPCClient
+ err error
+ lastChecked int64
+ count uint64
+ totalDelta time.Duration
+ )
+
+ // Init RPC client
+ if cfg.webSocket {
+ if client, err = rpcClient.NewWSClient(cfg.remoteAddress); err != nil {
+ return fmt.Errorf("unable to create WS client: %w", err)
+ }
+ } else {
+ if client, err = rpcClient.NewHTTPClient(cfg.remoteAddress); err != nil {
+ return fmt.Errorf("unable to create HTTP client: %w", err)
+ }
+ }
+
+ // Create a ticker for check interval
+ ticker := time.NewTicker(cfg.checkInterval)
+ defer ticker.Stop()
+
+ // Create a context that will stop this check when specified duration is elapsed
+ ctx, cancel := context.WithTimeout(context.Background(), cfg.checkDuration)
+ defer cancel()
+
+ for {
+ select {
+ case <-ctx.Done():
+ average := totalDelta / time.Duration(count)
+ io.Printf("no timestamp drifted beyond the maximum delta (average %s)\n", average)
+ return nil
+
+ case <-ticker.C:
+ // Fetch the latest block number from the chain
+ status, err := client.Status()
+ if err != nil {
+ return fmt.Errorf("unable to fetch latest block number: %w", err)
+ }
+
+ latest := status.SyncInfo.LatestBlockHeight
+
+ // Check if there have been blocks since the last check
+ if lastChecked == latest {
+ continue
+ }
+
+ // Fetch the latest block from the chain
+ lastBlock, err := client.Block(&latest)
+ if err != nil {
+ return fmt.Errorf("unable to fetch latest block content: %w", err)
+ }
+
+ // Check if the last block timestamp is not drifting
+ delta := time.Until(lastBlock.Block.Time).Abs()
+ if delta > cfg.maxDelta {
+ return fmt.Errorf("block %d drifted of %s (max %s): KO", latest, delta, cfg.maxDelta)
+ }
+
+ // Increment counters to calculate average on exit
+ count += 1
+ totalDelta += delta
+
+ // Update the last checked block number
+ lastChecked = latest
+ if cfg.verbose {
+ io.Printf("block %d drifted of %s (max %s): OK\n", latest, delta, cfg.maxDelta)
+ }
+ }
+ }
+}
diff --git a/contribs/gnohealth/main.go b/contribs/gnohealth/main.go
new file mode 100644
index 00000000000..4325c657976
--- /dev/null
+++ b/contribs/gnohealth/main.go
@@ -0,0 +1,14 @@
+package main
+
+import (
+ "context"
+ "os"
+
+ "github.com/gnolang/gno/tm2/pkg/commands"
+)
+
+func main() {
+ cmd := newHealthCmd(commands.NewDefaultIO())
+
+ cmd.Execute(context.Background(), os.Args[1:])
+}