Revamp dashboard and persist pool stats across restarts
Dashboard now renders 10 tiles in a 5x2 overview: hashrate, best share, miners, network hashrate, and expected block on the top row; difficulty, block height, block reward, total work, and the difficulty-adjustment countdown on the bottom row. Difficulty is rendered with T/P suffixes instead of scientific notation, the main hashrate card shows the 1-minute value, and the block-height tile pulses orange when the network tip advances. Added a 24-hour hashrate area chart below the overview, sampled once per minute. Samples are persisted to a new hashrate_samples SQLite table and restored on startup so the chart doesn't reset every time kamado-api is restarted. Cumulative pool work (sum of accepted diff-1-normalized shares) is now tracked across ckpool restarts. The aggregator integrates only positive deltas on pool.Shares — a regression means ckpool's counter reset to zero and the baseline is refreshed without losing the running total. A hasPoolSharesBaseline flag prevents double- counting on the first refresh after a kamado-api restart. The value is persisted to a new kv table once per minute. Next-block reward (subsidy + fees) is fetched from bitcoind getblocktemplate at most once per minute and surfaced as a tile. Header's block-height badge now reads prevHeight via untrack() so the effect doesn't form a dependency cycle with its own write.
This commit is contained in:
satoshi
@@ -7,6 +7,7 @@ package state
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import (
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"context"
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"log/slog"
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"strconv"
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"sync"
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"time"
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@@ -16,6 +17,12 @@ import (
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"github.com/kamadopool/kamado-api/internal/zmqmon"
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)
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// HashratePoint is a single timestamped hashrate sample for the 24h chart.
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type HashratePoint struct {
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T int64 `json:"t"` // unix seconds
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V float64 `json:"v"` // H/s
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}
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// Snapshot is the merged view served to the UI. All fields are safe to
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// JSON-serialize directly.
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type Snapshot struct {
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@@ -34,6 +41,18 @@ type Snapshot struct {
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HashrateHs1h float64 `json:"hashrate_hs_1h"`
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HashrateHs24h float64 `json:"hashrate_hs_24h"`
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// Best share difficulty ever seen across all workers.
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BestDiff float64 `json:"best_diff"`
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// Cumulative work done by the pool across its entire lifetime, in
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// diff-1-normalized shares (multiply by 2^32 for total hashes).
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// Survives ckpool restarts via kv-store persistence.
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CumulativeShares float64 `json:"cumulative_shares"`
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// Next-block reward (subsidy + fees) from bitcoind getblocktemplate,
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// in BTC. Refreshed at most once per minute.
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NextBlockRewardBTC float64 `json:"next_block_reward_btc"`
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// Bitcoin Core fields
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Chain *bitcoind.BlockchainInfo `json:"chain"`
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NetworkHashrateHs float64 `json:"network_hashrate_hs"`
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@@ -41,12 +60,20 @@ type Snapshot struct {
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// Recent found blocks (in-memory history; persisted in Phase 2b.5).
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RecentBlocks []BlockRecord `json:"recent_blocks,omitempty"`
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// 24-hour hashrate history, sampled once per minute (max 1440 points).
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HashrateHistory []HashratePoint `json:"hashrate_history,omitempty"`
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// Health
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CKPoolOK bool `json:"ckpool_ok"`
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BitcoinOK bool `json:"bitcoin_ok"`
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LastError string `json:"last_error,omitempty"`
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}
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const (
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maxHistoryPoints = 1440 // 24h at 1 sample/min
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kvCumulativeWork = "cumulative_shares"
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)
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// Aggregator refreshes a Snapshot on a ticker.
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type Aggregator struct {
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CK *ckpool.Client
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@@ -63,6 +90,31 @@ type Aggregator struct {
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snap Snapshot
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blocks []BlockRecord
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// 24h hashrate history ring buffer, sampled once per minute.
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hrHistory []HashratePoint
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lastHRSampleAt time.Time
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// Cumulative pool work in diff-1-normalized shares, surviving
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// ckpool restarts. Maintained by re-reading pool.Shares each
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// refresh and integrating only the positive delta — a decrease
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// means ckpool restarted and its counter reset to 0, so we reset
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// our delta baseline without losing the accumulated total.
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//
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// hasPoolSharesBaseline guards against double-counting on api
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// restart: cumulativeShares is loaded from disk, and the first
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// post-load observation of pool.Shares only establishes the
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// baseline — the current ckpool counter was already accounted for
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// before we crashed.
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cumulativeShares float64
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lastPoolShares float64
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hasPoolSharesBaseline bool
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lastCumulativeSave time.Time
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// Next-block reward cache; refreshed on its own cadence so we don't
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// hammer bitcoind with getblocktemplate on every poll tick.
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nextBlockReward float64
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lastTemplateFetch time.Time
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// ckFailStreak counts consecutive refreshes where CKPool returned an
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// error. The first failure after a streak of successes is logged at
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// DEBUG (likely a transient warm-up or lock hiccup); repeated failures
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@@ -86,6 +138,7 @@ func New(ck *ckpool.Client, rpc *bitcoind.RPC, interval time.Duration, log *slog
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// each received tip triggers an immediate refresh outside the poll cadence.
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func (a *Aggregator) Run(ctx context.Context, tipEvents <-chan zmqmon.TipEvent) {
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a.loadPersistedBlocks()
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a.loadPersistedState()
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a.refresh(ctx)
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t := time.NewTicker(a.Interval)
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defer t.Stop()
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@@ -167,6 +220,88 @@ func (a *Aggregator) refresh(ctx context.Context) {
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}
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}
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// Compute pool-wide best-ever share diff from workers.
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for _, w := range next.Workers {
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d := w.BestEver
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if d == 0 {
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d = w.BestDiff
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}
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if d > next.BestDiff {
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next.BestDiff = d
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}
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}
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a.mu.Lock()
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now := time.Now()
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// --- cumulative work tracking ---
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// Integrate only positive deltas on pool.Shares. A decrease means
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// ckpool restarted (or its state reset); reset the baseline without
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// touching the accumulated total. The first observation after load
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// only establishes the baseline — those shares were already
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// accumulated before the previous shutdown.
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if next.Pool != nil {
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cur := float64(next.Pool.Shares)
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if a.hasPoolSharesBaseline && cur >= a.lastPoolShares {
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a.cumulativeShares += cur - a.lastPoolShares
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}
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a.lastPoolShares = cur
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a.hasPoolSharesBaseline = true
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}
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next.CumulativeShares = a.cumulativeShares
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// Persist cumulative_shares at most once per minute.
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if a.Store != nil && now.Sub(a.lastCumulativeSave) >= time.Minute {
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val := strconv.FormatFloat(a.cumulativeShares, 'f', -1, 64)
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if err := a.Store.SetKV(kvCumulativeWork, val); err != nil {
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a.Log.Warn("cumulative_shares persist failed", "err", err)
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}
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a.lastCumulativeSave = now
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}
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// --- hashrate history sample (once per minute) ---
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if now.Sub(a.lastHRSampleAt) >= time.Minute {
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p := HashratePoint{T: now.Unix(), V: next.HashrateHs}
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a.hrHistory = append(a.hrHistory, p)
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if len(a.hrHistory) > maxHistoryPoints {
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a.hrHistory = a.hrHistory[len(a.hrHistory)-maxHistoryPoints:]
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}
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a.lastHRSampleAt = now
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if a.Store != nil {
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if err := a.Store.InsertHashrateSample(p.T, p.V); err != nil {
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a.Log.Warn("hashrate persist failed", "err", err)
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}
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// Keep the persisted window bounded to 24h + a small slack.
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cutoff := now.Add(-25 * time.Hour).Unix()
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_ = a.Store.PruneHashrateBefore(cutoff)
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}
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}
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if len(a.hrHistory) > 0 {
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next.HashrateHistory = make([]HashratePoint, len(a.hrHistory))
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copy(next.HashrateHistory, a.hrHistory)
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}
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// --- next-block reward (at most once per minute) ---
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next.NextBlockRewardBTC = a.nextBlockReward
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needTemplate := now.Sub(a.lastTemplateFetch) >= time.Minute
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a.mu.Unlock()
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if needTemplate && a.RPC != nil && next.BitcoinOK {
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tplCtx, cancelTpl := context.WithTimeout(ctx, 5*time.Second)
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tpl, err := a.RPC.GetBlockTemplate(tplCtx)
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cancelTpl()
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if err == nil && tpl != nil {
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reward := float64(tpl.CoinbaseValue) / 1e8
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a.mu.Lock()
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a.nextBlockReward = reward
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a.lastTemplateFetch = now
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next.NextBlockRewardBTC = reward
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a.mu.Unlock()
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} else if err != nil {
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a.Log.Debug("getblocktemplate failed", "err", err)
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}
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}
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a.mu.Lock()
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// Attach current block history so /api/snapshot and WebSocket
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// pushes carry the same view.
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@@ -183,3 +318,38 @@ func (a *Aggregator) refresh(ctx context.Context) {
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cb(pushed)
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}
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}
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// loadPersistedState restores cumulative work and hashrate history from
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// the store so they survive process restarts. Safe to call with a nil
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// Store — becomes a no-op.
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func (a *Aggregator) loadPersistedState() {
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if a.Store == nil {
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return
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}
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if v, err := a.Store.GetKV(kvCumulativeWork); err != nil {
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a.Log.Warn("cumulative_shares load failed", "err", err)
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} else if v != "" {
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if f, perr := strconv.ParseFloat(v, 64); perr == nil {
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a.mu.Lock()
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a.cumulativeShares = f
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a.mu.Unlock()
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a.Log.Info("cumulative_shares loaded", "value", f)
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}
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}
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cutoff := time.Now().Add(-24 * time.Hour).Unix()
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if samples, err := a.Store.HashrateSince(cutoff); err != nil {
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a.Log.Warn("hashrate history load failed", "err", err)
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} else if len(samples) > 0 {
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hist := make([]HashratePoint, 0, len(samples))
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for _, s := range samples {
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hist = append(hist, HashratePoint{T: s.T, V: s.V})
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}
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a.mu.Lock()
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a.hrHistory = hist
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a.lastHRSampleAt = time.Unix(hist[len(hist)-1].T, 0)
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a.mu.Unlock()
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a.Log.Info("hashrate history loaded", "count", len(hist))
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}
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}
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