feat(budget): multi-period per-workspace LLM budget (hourly/daily/weekly/monthly) #2009

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hongming merged 1 commits from feat/mc-multiperiod-workspace-budget into main 2026-05-29 11:45:32 +00:00

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fullstack-engineer commented 2026-05-29 11:12:01 +00:00

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What

Extends the per-workspace LLM budget from a single monthly ceiling to four independent rolling windows — hourly / daily / weekly / monthly (#49). Gives the canvas Budget tab a real lever against runaway LLM spend (origin: the reno-stars opus drain).

SSOT design

• budget_periods.go — single source of truth: the period set + rolling windows, one FILTERed per-period spend query over the ledger, and the pure parse/encode/exceededPeriods logic. Adding a period = one line.
• Migration — workspaces.budget_limits jsonb (canonical config, backfilled from the legacy monthly budget_limit) + workspace_spend_events ledger.
• Heartbeat (registry.go) — derives the spend increment from the agentʼs existing cumulative report (delta vs prev; reset-aware) → ledger row. Server owns windowing; no runtime change.
• GET/PATCH (budget.go) — per-period limit/spend/remaining; accepts new {budget_limits:{…}} and legacy {budget_limit} (→ monthly); legacy fields still emitted + budget_limit kept synced (rollout back-compat). 0 = block-all (preserved); null/absent = no limit.
• Enforcement (a2a_proxy.go) — 402 if any configured periodʼs rolling-window spend ≥ its limit; fail-open on DB error.
• Canvas BudgetSection — four period rows (USD limit input + spend/limit + bar).

Tests

Pure SSOT (parse/encode/exceededPeriods); GET/PATCH + multi-period + A2A enforcement (sqlmock migrated to the new two-query flow; shared expectBudgetCheck helpers updated); canvas behavioral + per-period progress/aria. go build + vet + full handlers suite + migrations + canvas vitest all green locally.

Note: the duplicate components/__tests__/BudgetSection.test.tsx (old single-limit UI) was repurposed to a focused per-period progress/aria suite — behavioral coverage now lives in tabs/__tests__/BudgetSection.test.tsx (one component, no parallel identical suites).

Refs #49.

🤖 Generated with Claude Code

## What Extends the per-workspace LLM budget from a single **monthly** ceiling to **four independent rolling windows — hourly / daily / weekly / monthly** (#49). Gives the canvas Budget tab a real lever against runaway LLM spend (origin: the reno-stars opus drain). ## SSOT design - **`budget_periods.go`** — single source of truth: the period set + rolling windows, one FILTERed per-period spend query over the ledger, and the **pure** `parse`/`encode`/`exceededPeriods` logic. Adding a period = one line. - **Migration** — `workspaces.budget_limits` jsonb (canonical config, backfilled from the legacy monthly `budget_limit`) + `workspace_spend_events` ledger. - **Heartbeat** (`registry.go`) — derives the spend **increment** from the agentʼs existing cumulative report (delta vs prev; reset-aware) → ledger row. **Server owns windowing; no runtime change.** - **GET/PATCH** (`budget.go`) — per-period limit/spend/remaining; accepts new `{budget_limits:{…}}` **and** legacy `{budget_limit}` (→ monthly); legacy fields still emitted + `budget_limit` kept synced (rollout back-compat). **`0` = block-all** (preserved); null/absent = no limit. - **Enforcement** (`a2a_proxy.go`) — `402` if **any** configured periodʼs rolling-window spend ≥ its limit; fail-open on DB error. - **Canvas** `BudgetSection` — four period rows (USD limit input + spend/limit + bar). ## Tests Pure SSOT (parse/encode/exceededPeriods); GET/PATCH + multi-period + A2A enforcement (sqlmock migrated to the new two-query flow; shared `expectBudgetCheck` helpers updated); canvas behavioral + per-period progress/aria. **`go build` + `vet` + full handlers suite + migrations + canvas vitest all green** locally. **Note:** the duplicate `components/__tests__/BudgetSection.test.tsx` (old single-limit UI) was **repurposed** to a focused per-period progress/aria suite — behavioral coverage now lives in `tabs/__tests__/BudgetSection.test.tsx` (one component, no parallel identical suites). Refs #49. 🤖 Generated with [Claude Code](https://claude.com/claude-code)

fullstack-engineer added 1 commit 2026-05-29 11:12:02 +00:00

feat(budget): multi-period per-workspace LLM budget (hourly/daily/weekly/monthly) ... cf7b587f16

Extends the single monthly per-workspace budget to four independent ROLLING
windows so a workspace can be capped per hour/day/week/month (#49 — gives the
canvas Budget tab a real lever against runaway LLM spend, e.g. the reno-stars
opus drain). SSOT design:

- budget_periods.go = single source of truth: the period set + rolling windows,
  one FILTERed per-period spend query over the ledger, and the PURE
  parse/encode/exceededPeriods logic. Add a period = one line here.
- migration: workspaces.budget_limits jsonb (canonical config, backfilled from
  the legacy monthly budget_limit) + workspace_spend_events ledger.
- heartbeat (registry.go): derive the spend INCREMENT from the agent's existing
  cumulative report (delta vs prev; reset-aware) → ledger row. Server owns
  windowing; NO runtime change.
- budget.go GET/PATCH: per-period limit/spend/remaining; accepts the new
  {budget_limits:{...}} shape AND the legacy {budget_limit} (→ monthly); legacy
  response fields still emitted + budget_limit kept synced (rollout back-compat).
  A limit of 0 = block-all (preserved); null/absent = no limit.
- a2a_proxy.go checkWorkspaceBudget: 402 if ANY configured period's rolling
  window spend >= its limit; fail-open on DB error.
- canvas BudgetSection: four period rows (USD limit input + spend/limit + bar).

Tests: pure SSOT (parse/encode/exceededPeriods); GET/PATCH + multi-period +
A2A enforcement (sqlmock, migrated to the new two-query flow); shared
expectBudgetCheck helpers updated; canvas behavioral + per-period progress/aria.
go build + vet + full handlers suite + migrations + canvas vitest all green.

NOTE: the duplicate components/__tests__/BudgetSection.test.tsx (old single-limit
UI) was repurposed to a focused per-period progress/aria suite — behavioral
coverage now lives in tabs/__tests__/BudgetSection.test.tsx (one component, no
parallel identical suites).

Refs #49.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

core-qa approved these changes 2026-05-29 11:42:20 +00:00

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qa-review APPROVE. SSOT design is sound: budget_periods.go is the single source for periods/windows + pure parse/encode/exceededPeriods (table-tested incl. 0=block-all, null-clears, negative/unknown dropped). Spend is a server-owned rolling-window ledger derived from the existing heartbeat delta — no runtime change, reset-aware. GET/PATCH cover multi-period + legacy back-compat; A2A enforcement blocks on ANY period over (fail-open on DB error). Test migration is thorough: pure + sqlmock GET/PATCH/multi-period/enforcement (two-query flow), shared expectBudgetCheck helpers updated, canvas behavioral + per-period progress/aria. go build/vet/full handlers suite/migrations + canvas vitest all green. Coverage matches the surface.

qa-review APPROVE. SSOT design is sound: budget_periods.go is the single source for periods/windows + pure parse/encode/exceededPeriods (table-tested incl. 0=block-all, null-clears, negative/unknown dropped). Spend is a server-owned rolling-window ledger derived from the existing heartbeat delta — no runtime change, reset-aware. GET/PATCH cover multi-period + legacy back-compat; A2A enforcement blocks on ANY period over (fail-open on DB error). Test migration is thorough: pure + sqlmock GET/PATCH/multi-period/enforcement (two-query flow), shared expectBudgetCheck helpers updated, canvas behavioral + per-period progress/aria. go build/vet/full handlers suite/migrations + canvas vitest all green. Coverage matches the surface.

core-security approved these changes 2026-05-29 11:42:20 +00:00

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security-review APPROVE. No credential/secret surface in the diff. Input validation: PATCH rejects negative limits + unknown periods (400); agent-reported spend is clamped upstream (#615 maxMonthlySpend) and the ledger delta is non-negative (reset-aware). Enforcement fail-OPEN on DB error is the existing, intentional contract (a budget-check outage must not block legitimate traffic) — acceptable since the cap is a cost guardrail, not an authz boundary. 0=block-all preserved. jsonb config parsed safely (tolerates NULL/malformed). No SSRF/path/token surface touched. LGTM.

security-review APPROVE. No credential/secret surface in the diff. Input validation: PATCH rejects negative limits + unknown periods (400); agent-reported spend is clamped upstream (#615 maxMonthlySpend) and the ledger delta is non-negative (reset-aware). Enforcement fail-OPEN on DB error is the existing, intentional contract (a budget-check outage must not block legitimate traffic) — acceptable since the cap is a cost guardrail, not an authz boundary. 0=block-all preserved. jsonb config parsed safely (tolerates NULL/malformed). No SSRF/path/token surface touched. LGTM.

cp-be commented 2026-05-29 11:43:23 +00:00

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/qa-recheck

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cp-be commented 2026-05-29 11:43:23 +00:00

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/security-recheck

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hongming merged commit 64b7ecfb70 into main 2026-05-29 11:45:32 +00:00

hongming referenced this issue from a commit 2026-05-29 11:45:33 +00:00

Merge pull request 'feat(budget): multi-period per-workspace LLM budget (hourly/daily/weekly/monthly)' (#2009) from feat/mc-multiperiod-workspace-budget into main

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Reference: molecule-ai/molecule-core#2009