g1t/services/billing/src/limits.rs
| 1 | //! How far a workspace can run up costs g1t has not been paid for, and how |
| 2 | //! far its owners let it spend. |
| 3 | //! |
| 4 | //! Every sandbox second, build, app request and model token costs g1t |
| 5 | //! money at Cloudflare or a model provider before the workspace pays for |
| 6 | //! it. So each workspace has a ceiling on that unpaid usage: |
| 7 | //! |
| 8 | //! - **Free**: a few dollars (`LIMIT_NEW_MICROS`), for what a free |
| 9 | //! workspace can owe at all (private storage past 1 GB). Free workspaces |
| 10 | //! have no on-demand compute: the trial and g1t's pools pay for it. |
| 11 | //! - **Paid, first month**: `LIMIT_PAID_START_MICROS` ($100) while the plan |
| 12 | //! is in its first billing cycle. |
| 13 | //! - **Paid, after**: twice what it has paid g1t once payments clear |
| 14 | //! (`SETTLE_DAYS`), never less than the starting ceiling; after three |
| 15 | //! steady months it follows the monthly spend, up to $10,000. |
| 16 | //! - **Reviewed**: a ceiling g1t staff set by hand. |
| 17 | //! - **Internal**: g1t's own workspaces, with none. |
| 18 | //! |
| 19 | //! A ceiling g1t granted (an approved request, or the owners' one-time |
| 20 | //! raise) is a floor under the trust ceiling. Money paid in advance raises |
| 21 | //! what can be used before work stops by the same amount, at once: it comes |
| 22 | //! off what is owed before anything counts against the ceiling. |
| 23 | //! |
| 24 | //! Owners also set a monthly **spend limit** on what is charged. They may |
| 25 | //! put it anywhere up to the highest ceiling the workspace has ever had, |
| 26 | //! plus what is prepaid, without asking anyone; once per workspace they may |
| 27 | //! raise it to twice that highest ceiling themselves. Past that, they ask |
| 28 | //! (see `requests`), and g1t answers within one business day. |
| 29 | //! |
| 30 | //! Alerts go out at 50, 75, 90 and 100% of the plan's included usage, the |
| 31 | //! spend limit and the ceiling, in the app and by email. At the ceiling or |
| 32 | //! the spend limit, new work stops: no new sandboxes, builds or app |
| 33 | //! requests until it is paid, raised, or the month turns. Runs already |
| 34 | //! under way finish. |
| 35 | //! |
| 36 | //! Usage counts at what it cost g1t or what it is charged, whichever is |
| 37 | //! more. Test-mode payments are not money, so they do not raise trust. |
| 38 | |
| 39 | use g1t_contracts::billing::{ |
| 40 | CheckLimitArgs, Limit, LimitArgs, LimitState, NotePendingArgs, PlanKind, SetSpendLimitArgs, TermsKind, Trust, |
| 41 | }; |
| 42 | use g1t_contracts::time::rfc3339; |
| 43 | use g1t_contracts::{FailureCode, Outcome, Role}; |
| 44 | use g1t_kit::now_ms; |
| 45 | use serde::Deserialize; |
| 46 | use worker::wasm_bindgen::JsValue; |
| 47 | use worker::{Env, Result}; |
| 48 | |
| 49 | use crate::features::dollars as dollars_plain; |
| 50 | use crate::{Billing, members_only}; |
| 51 | |
| 52 | /// The ceilings, from the billing service's variables. |
| 53 | pub(crate) struct Ceilings { |
| 54 | /// `LIMIT_NEW_MICROS`: a free workspace's. |
| 55 | pub new: i64, |
| 56 | /// `LIMIT_PAID_MIN_MICROS` and `LIMIT_PAID_MAX_MICROS`: the bounds of a |
| 57 | /// paid workspace's, from what it has paid. |
| 58 | pub paid_min: i64, |
| 59 | pub paid_max: i64, |
| 60 | } |
| 61 | |
| 62 | impl Ceilings { |
| 63 | pub(crate) fn from_env(env: &Env) -> Self { |
| 64 | let number = |name: &str, default: i64| { |
| 65 | env.var(name).ok().and_then(|v| v.to_string().parse::<i64>().ok()).unwrap_or(default) |
| 66 | }; |
| 67 | Ceilings { |
| 68 | new: number("LIMIT_NEW_MICROS", 3_000_000), |
| 69 | paid_min: number("LIMIT_PAID_MIN_MICROS", 25_000_000), |
| 70 | paid_max: number("LIMIT_PAID_MAX_MICROS", 1_000_000_000), |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | /// The ceiling for a workspace that has paid `paid` in live money. |
| 75 | pub(crate) fn for_paid(&self, paid: i64) -> i64 { |
| 76 | (paid * 2).clamp(self.paid_min, self.paid_max) |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | /// Where a workspace stands against its ceiling. |
| 81 | pub(crate) fn state(exposure: i64, ceiling: Option<i64>) -> LimitState { |
| 82 | match ceiling { |
| 83 | Some(ceiling) if exposure >= ceiling => LimitState::Stopped, |
| 84 | Some(ceiling) if exposure * 5 >= ceiling * 4 => LimitState::Warning, |
| 85 | _ => LimitState::Ok, |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | /// The automatic monthly spend limit's floor: $200. |
| 90 | pub(crate) const DEFAULT_SPEND_MICROS: i64 = 200_000_000; |
| 91 | /// Established workspaces' ceiling: three times their steady monthly |
| 92 | /// spend, up to $10,000. |
| 93 | const ESTABLISHED_FACTOR: i64 = 3; |
| 94 | const ESTABLISHED_MAX_MICROS: i64 = 10_000_000_000; |
| 95 | /// A month counts toward Established at this much spend or more. |
| 96 | const ESTABLISHED_MONTH_MICROS: i64 = 20_000_000; |
| 97 | /// Payments raise trust once this old: past the time most bad cards are |
| 98 | /// caught. |
| 99 | pub(crate) const SETTLE_DAYS: u64 = 7; |
| 100 | |
| 101 | /// The automatic spend limit: $200, or twice last month's spend. |
| 102 | pub(crate) fn automatic_spend_limit(last_month_charged: i64) -> i64 { |
| 103 | DEFAULT_SPEND_MICROS.max(last_month_charged * 2) |
| 104 | } |
| 105 | |
| 106 | /// An Established workspace's ceiling, from its last three months' |
| 107 | /// charges, if each was steady enough. |
| 108 | pub(crate) fn established_ceiling(months: &[i64]) -> Option<i64> { |
| 109 | if months.len() < 3 || months.iter().any(|m| *m < ESTABLISHED_MONTH_MICROS) { |
| 110 | return None; |
| 111 | } |
| 112 | let average = months.iter().sum::<i64>() / months.len() as i64; |
| 113 | Some((average * ESTABLISHED_FACTOR).min(ESTABLISHED_MAX_MICROS)) |
| 114 | } |
| 115 | |
| 116 | /// Days since 1970-01-01 of a `YYYY-MM-DD…` date, for comparing dates |
| 117 | /// without a clock (Howard Hinnant's days-from-civil). |
| 118 | pub(crate) fn days(date: &str) -> i64 { |
| 119 | let year: i64 = date.get(..4).and_then(|y| y.parse().ok()).unwrap_or(1970); |
| 120 | let month: i64 = date.get(5..7).and_then(|m| m.parse().ok()).unwrap_or(1); |
| 121 | let day: i64 = date.get(8..10).and_then(|d| d.parse().ok()).unwrap_or(1); |
| 122 | let y = if month <= 2 { year - 1 } else { year }; |
| 123 | let era = y.div_euclid(400); |
| 124 | let yoe = y - era * 400; |
| 125 | let mp = (month + 9) % 12; |
| 126 | let doy = (153 * mp + 2) / 5 + day - 1; |
| 127 | let doe = yoe * 365 + yoe / 4 - yoe / 100 + doy; |
| 128 | era * 146_097 + doe - 719_468 |
| 129 | } |
| 130 | |
| 131 | /// Whether a plan that started at `started_at` is still in its first |
| 132 | /// billing cycle: its paid period ends no more than a month after it |
| 133 | /// started (a renewal moves the end a month on), or, with no period known, |
| 134 | /// it started within the last 31 days. |
| 135 | pub(crate) fn in_first_cycle(started_at: &str, period_end: Option<&str>, now: &str) -> bool { |
| 136 | match period_end { |
| 137 | Some(end) => days(end) - days(started_at) <= 32 && days(now) <= days(end), |
| 138 | None => days(now) - days(started_at) <= 31, |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | /// g1t's ceiling for a workspace on the plan: the starting one in its |
| 143 | /// first month; after it, what it has paid (or its Established ceiling), |
| 144 | /// never less than the starting one. |
| 145 | pub(crate) fn paid_ceiling(ceilings: &Ceilings, start: i64, first_month: bool, paid: i64, established: Option<i64>) -> i64 { |
| 146 | if first_month { |
| 147 | return start; |
| 148 | } |
| 149 | let from_paid = if paid > 0 { ceilings.for_paid(paid) } else { 0 }; |
| 150 | start.max(from_paid).max(established.unwrap_or(0)) |
| 151 | } |
| 152 | |
| 153 | /// What the owners may set their spend limit to without asking, and the |
| 154 | /// one-time raise if it is still theirs to use: up to the highest ceiling |
| 155 | /// ever (or the current one, if higher) plus what is prepaid; once, twice |
| 156 | /// the highest ceiling. |
| 157 | pub(crate) fn spend_bounds(ceiling: i64, max_ever: i64, prepaid: i64, raised: bool) -> (i64, Option<i64>) { |
| 158 | let highest = ceiling.max(max_ever); |
| 159 | let available = highest + prepaid.max(0); |
| 160 | let once = (!raised).then(|| (highest * 2 + prepaid.max(0)).max(available)); |
| 161 | (available, once) |
| 162 | } |
| 163 | |
| 164 | /// Whether `requested` is a spend limit the owners may set themselves. |
| 165 | /// `Ok(true)` when it takes the one-time raise. |
| 166 | pub(crate) fn self_serve(requested: i64, available: i64, once: Option<i64>, raise_once: bool) -> std::result::Result<bool, String> { |
| 167 | if requested < 0 { |
| 168 | return Err("A spend limit cannot be negative.".to_owned()); |
| 169 | } |
| 170 | if requested <= available { |
| 171 | return Ok(false); |
| 172 | } |
| 173 | match once { |
| 174 | Some(once) if raise_once && requested <= once => Ok(true), |
| 175 | Some(once) if raise_once => Err(format!( |
| 176 | "The one-time raise goes up to {}. For more, ask g1t with Raise my limit; the answer comes within one business day.", |
| 177 | dollars_plain(once) |
| 178 | )), |
| 179 | Some(once) => Err(format!( |
| 180 | "You can set up to {} yourself, or use your one-time raise to go up to {}. For more, ask g1t with Raise my limit.", |
| 181 | dollars_plain(available), |
| 182 | dollars_plain(once) |
| 183 | )), |
| 184 | None => Err(format!( |
| 185 | "You can set up to {} yourself, and the one-time raise is used. For more, ask g1t with Raise my limit; the answer comes within one business day.", |
| 186 | dollars_plain(available) |
| 187 | )), |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | /// Which alert a measure has reached: 100, 90, 75, 50, or none (0). |
| 192 | pub(crate) fn alert_level(used: i64, limit: i64) -> u32 { |
| 193 | if limit <= 0 || used <= 0 { |
| 194 | return 0; |
| 195 | } |
| 196 | for level in [100u32, 90, 75, 50] { |
| 197 | if used * 100 >= limit * i64::from(level) { |
| 198 | return level; |
| 199 | } |
| 200 | } |
| 201 | 0 |
| 202 | } |
| 203 | |
| 204 | /// What is owed and what is prepaid, from this month's usage and payments |
| 205 | /// and the balance the month started with (positive: paid in advance; |
| 206 | /// negative: owed from before). |
| 207 | pub(crate) fn exposure(used: i64, paid_month: i64, balance_before: i64) -> (i64, i64) { |
| 208 | let prepaid_in = balance_before.max(0); |
| 209 | let carried = (-balance_before).max(0); |
| 210 | let net = used - paid_month - prepaid_in; |
| 211 | (net.max(0) + carried, (-net).max(0)) |
| 212 | } |
| 213 | |
| 214 | #[derive(Deserialize)] |
| 215 | struct LimitRow { |
| 216 | spend_limit_micros: Option<i64>, |
| 217 | #[serde(default)] |
| 218 | spend_limit_full: Option<i64>, |
| 219 | autopay_failed_at: Option<String>, |
| 220 | autopay_error: Option<String>, |
| 221 | #[serde(default)] |
| 222 | max_ceiling_micros: Option<i64>, |
| 223 | #[serde(default)] |
| 224 | granted_ceiling_micros: Option<i64>, |
| 225 | #[serde(default)] |
| 226 | raised_at: Option<String>, |
| 227 | } |
| 228 | |
| 229 | #[derive(Deserialize)] |
| 230 | struct Month { |
| 231 | used: Option<i64>, |
| 232 | paid: Option<i64>, |
| 233 | } |
| 234 | |
| 235 | #[derive(Deserialize)] |
| 236 | struct Paid { |
| 237 | paid: Option<i64>, |
| 238 | } |
| 239 | |
| 240 | impl Billing { |
| 241 | /// The workspace's limit, worked out from the ledger of the account |
| 242 | /// that pays for it: its own, or its enterprise's, whose workspaces' |
| 243 | /// usage and payments count together. |
| 244 | pub(crate) async fn limit_of(&self, workspace: &str) -> Result<Limit> { |
| 245 | let workspace = workspace.to_lowercase(); |
| 246 | let account = self.account_of(&workspace).await?; |
| 247 | let row = self |
| 248 | .db |
| 249 | .prepare( |
| 250 | "SELECT spend_limit_micros, spend_limit_full, autopay_failed_at, autopay_error, |
| 251 | max_ceiling_micros, granted_ceiling_micros, raised_at |
| 252 | FROM limits WHERE workspace = ?", |
| 253 | ) |
| 254 | .bind(&[workspace.as_str().into()])? |
| 255 | .first::<LimitRow>(None) |
| 256 | .await?; |
| 257 | let now = rfc3339(now_ms()); |
| 258 | let month_start = format!("{}-01", &now[..7]); |
| 259 | let marks = vec!["?"; account.workspaces.len().max(1)].join(", "); |
| 260 | let members: Vec<JsValue> = if account.workspaces.is_empty() { |
| 261 | vec![JsValue::from(workspace.as_str())] |
| 262 | } else { |
| 263 | account.workspaces.iter().map(|w| JsValue::from(w.as_str())).collect() |
| 264 | }; |
| 265 | let mut with_month = members.clone(); |
| 266 | with_month.push(month_start.as_str().into()); |
| 267 | // Each usage entry at its cost to g1t or its charge, whichever is |
| 268 | // more; on the workspace's own provider, only what g1t charged. |
| 269 | // What the plan's included usage, the trial, the open-source pool |
| 270 | // or g1t itself paid for is not unpaid: those are budgets already |
| 271 | // paid for. |
| 272 | let month = self |
| 273 | .db |
| 274 | .prepare(format!( |
| 275 | "SELECT |
| 276 | SUM(CASE WHEN kind = 'usage' THEN |
| 277 | CASE WHEN COALESCE(billed_to, 'g1t') = 'g1t' |
| 278 | THEN MAX(COALESCE(cost_micros, 0) - COALESCE(credit_micros, 0) |
| 279 | - COALESCE(trial_micros, 0) - COALESCE(oss_micros, 0) |
| 280 | - COALESCE(given_micros, 0), |
| 281 | -amount_micros) |
| 282 | ELSE -amount_micros END |
| 283 | END) AS used, |
| 284 | SUM(CASE WHEN kind = 'top_up' THEN amount_micros END) AS paid |
| 285 | FROM ledger WHERE workspace IN ({marks}) AND created_at >= ?" |
| 286 | )) |
| 287 | .bind(&with_month)? |
| 288 | .first::<Month>(None) |
| 289 | .await?; |
| 290 | let (used, paid_month) = month.map_or((0, 0), |m| (m.used.unwrap_or(0), m.paid.unwrap_or(0))); |
| 291 | // And what is metered but not charged until the month closes. |
| 292 | let mut pending_args = members.clone(); |
| 293 | pending_args.push(month_start[..7].into()); |
| 294 | let pending = self |
| 295 | .db |
| 296 | .prepare(format!( |
| 297 | "SELECT SUM(charge_micros) AS paid FROM pending_usage WHERE workspace IN ({marks}) AND month = ?" |
| 298 | )) |
| 299 | .bind(&pending_args)? |
| 300 | .first::<Paid>(None) |
| 301 | .await? |
| 302 | .and_then(|row| row.paid) |
| 303 | .unwrap_or(0); |
| 304 | let used = used + pending; |
| 305 | // Test-mode payments are not money: they pay nothing off. |
| 306 | let live = self.stripe.as_ref().is_some_and(crate::stripe::Stripe::live); |
| 307 | // The balance the month started with: owed from before (so a new |
| 308 | // month is not a fresh allowance for an account that never pays), |
| 309 | // or paid in advance. Credits g1t gave count; test-mode payments |
| 310 | // do not. |
| 311 | let mut before = members.clone(); |
| 312 | before.push(month_start.as_str().into()); |
| 313 | let balance_before = self |
| 314 | .db |
| 315 | .prepare(format!( |
| 316 | "SELECT SUM(CASE WHEN kind = 'usage' THEN amount_micros |
| 317 | WHEN kind = 'top_up' AND ({live} = 1 OR reference LIKE 'crd%') THEN amount_micros |
| 318 | ELSE 0 END) AS paid |
| 319 | FROM ledger WHERE workspace IN ({marks}) AND created_at < ?", |
| 320 | live = u8::from(live) |
| 321 | )) |
| 322 | .bind(&before)? |
| 323 | .first::<Paid>(None) |
| 324 | .await? |
| 325 | .and_then(|row| row.paid) |
| 326 | .unwrap_or(0); |
| 327 | let (exposure, prepaid) = exposure(used, if live { paid_month } else { 0 }, balance_before); |
| 328 | |
| 329 | let plan = self.plan_kind(&workspace).await?; |
| 330 | let mut first_month = false; |
| 331 | let (trust, trust_ceiling) = match account.terms.kind { |
| 332 | TermsKind::Comped => (Trust::Internal, None), |
| 333 | _ if account.terms.ceiling_micros.is_some() => (Trust::Reviewed, account.terms.ceiling_micros), |
| 334 | _ => { |
| 335 | let paid = self.live_paid(&members).await?; |
| 336 | let established = if paid > 0 { self.established(&members).await? } else { None }; |
| 337 | if plan == PlanKind::Free { |
| 338 | // Nothing on demand: only what a free workspace can owe. |
| 339 | (Trust::New, Some(self.ceilings.new)) |
| 340 | } else { |
| 341 | first_month = plan == PlanKind::Paid && self.first_month(&workspace).await?; |
| 342 | let ceiling = paid_ceiling(&self.ceilings, self.plans.paid_start_micros, first_month, paid, established); |
| 343 | (if established.is_some() { Trust::Established } else { Trust::Paid }, Some(ceiling)) |
| 344 | } |
| 345 | } |
| 346 | }; |
| 347 | // A ceiling g1t granted is a floor under the trust ceiling. |
| 348 | let granted = row.as_ref().and_then(|row| row.granted_ceiling_micros); |
| 349 | let ceiling = trust_ceiling.map(|c| c.max(granted.unwrap_or(0))); |
| 350 | // The highest ceiling ever, kept as it rises. |
| 351 | let stored_max = row.as_ref().and_then(|row| row.max_ceiling_micros); |
| 352 | let max_ever = match (stored_max, ceiling) { |
| 353 | (Some(stored), Some(now)) => Some(stored.max(now)), |
| 354 | (stored, now) => stored.or(now), |
| 355 | }; |
| 356 | if let (Some(max), true) = (max_ever, ceiling.is_some() && max_ever != stored_max && plan != PlanKind::Free) { |
| 357 | self.db |
| 358 | .prepare( |
| 359 | "INSERT INTO limits (workspace, max_ceiling_micros, updated_at) VALUES (?1, ?2, ?3) |
| 360 | ON CONFLICT (workspace) DO UPDATE SET max_ceiling_micros = MAX(COALESCE(max_ceiling_micros, 0), ?2), updated_at = ?3", |
| 361 | ) |
| 362 | .bind(&[workspace.as_str().into(), (max as f64).into(), now.as_str().into()])? |
| 363 | .run() |
| 364 | .await?; |
| 365 | } |
| 366 | // This month's charges, and last month's, for the spend limit. |
| 367 | let (spent, last_month) = self.charged_months(&members, &month_start).await?; |
| 368 | let spent = spent + pending; |
| 369 | let raised_at = row.as_ref().and_then(|row| row.raised_at.clone()); |
| 370 | let self_serve = matches!(trust, Trust::New | Trust::Paid | Trust::Established) && plan != PlanKind::Free; |
| 371 | let (available, raise_once) = match (ceiling, self_serve) { |
| 372 | (Some(ceiling), true) => { |
| 373 | let (available, once) = spend_bounds(ceiling, max_ever.unwrap_or(ceiling), prepaid, raised_at.is_some()); |
| 374 | (Some(available), once) |
| 375 | } |
| 376 | (ceiling, _) => (ceiling, None), |
| 377 | }; |
| 378 | // The owners' own monthly limit: theirs, none, or the automatic one |
| 379 | // ($200, or twice last month), which self-serve workspaces start on. |
| 380 | let chosen = row.as_ref().and_then(|row| row.spend_limit_micros); |
| 381 | let full = row.as_ref().and_then(|row| row.spend_limit_full).unwrap_or(0) == 1; |
| 382 | let default_spend_limit = chosen.is_none() && !full && self_serve; |
| 383 | let spend_limit = match (chosen, full) { |
| 384 | (Some(own), _) => Some(own), |
| 385 | (None, true) => None, |
| 386 | (None, false) if self_serve => Some(automatic_spend_limit(last_month)), |
| 387 | _ => None, |
| 388 | }; |
| 389 | // A card declined when g1t charged it at the limit stops work until |
| 390 | // it is paid; any payment clears it. |
| 391 | let declined = row.as_ref().and_then(|row| row.autopay_failed_at.clone().map(|at| (at, row.autopay_error.clone()))); |
| 392 | // Two limits: g1t's on what is unpaid, the owners' on what is spent. |
| 393 | let risk = state(exposure, ceiling); |
| 394 | let budget = state(spent, spend_limit); |
| 395 | let over_budget = budget == LimitState::Stopped; |
| 396 | let state = if declined.is_some() && exposure > 0 { |
| 397 | LimitState::Stopped |
| 398 | } else if risk == LimitState::Stopped || over_budget { |
| 399 | LimitState::Stopped |
| 400 | } else if risk == LimitState::Warning || budget == LimitState::Warning { |
| 401 | LimitState::Warning |
| 402 | } else { |
| 403 | LimitState::Ok |
| 404 | }; |
| 405 | let who = if account.kind == g1t_contracts::billing::AccountKind::Enterprise { |
| 406 | format!("The {} enterprise, which pays for {workspace},", account.name) |
| 407 | } else { |
| 408 | format!("The {workspace} workspace") |
| 409 | }; |
| 410 | let billing = format!("/{workspace}/-/billing"); |
| 411 | let message = match state { |
| 412 | LimitState::Ok => None, |
| 413 | LimitState::Warning if budget == LimitState::Warning => Some(format!( |
| 414 | "{who} has spent {} of its {} monthly spend limit. At the limit, its sandboxes, builds and apps stop until the month turns or an owner raises it at {billing}.", |
| 415 | dollars_plain(spent), |
| 416 | dollars_plain(spend_limit.unwrap_or_default()), |
| 417 | )), |
| 418 | LimitState::Warning => Some(format!( |
| 419 | "{who} has {} of usage not yet paid for, of the {} g1t allows. With a card on file g1t charges it now; prepaying at {billing} raises what it can use at once.", |
| 420 | dollars_plain(exposure), |
| 421 | dollars_plain(ceiling.unwrap_or_default()), |
| 422 | )), |
| 423 | LimitState::Stopped if declined.is_some() => Some(format!( |
| 424 | "{who} could not be charged for its usage ({}), so its sandboxes, builds and apps are stopped. An owner can pay with another card at {billing}.", |
| 425 | declined.as_ref().and_then(|(_, error)| error.clone()).unwrap_or_else(|| "the card was declined".to_owned()), |
| 426 | )), |
| 427 | LimitState::Stopped => Some(if over_budget { |
| 428 | format!( |
| 429 | "{who} reached its {} monthly spend limit, so its sandboxes, builds and apps are stopped until the month turns. An owner can raise it at {billing}.", |
| 430 | dollars_plain(spend_limit.unwrap_or_default()), |
| 431 | ) |
| 432 | } else { |
| 433 | format!( |
| 434 | "{who} reached its {} limit for usage not yet paid for, so its sandboxes, builds and apps are stopped. An owner can pay or prepay, or ask for a higher limit, at {billing}.", |
| 435 | dollars_plain(ceiling.unwrap_or_default()), |
| 436 | ) |
| 437 | }), |
| 438 | }; |
| 439 | let growth = match trust { |
| 440 | Trust::New => Some("Free workspaces have no on-demand usage: the g1t plan starts at a $100 limit.".to_owned()), |
| 441 | Trust::Paid if first_month => Some(format!( |
| 442 | "Your first month's limit is {}. After it, the limit grows to twice what you have paid as payments clear ({SETTLE_DAYS} days), up to $1,000. Prepaying raises it at once, and you can ask for more.", |
| 443 | dollars_plain(self.plans.paid_start_micros) |
| 444 | )), |
| 445 | Trust::Paid => Some(format!( |
| 446 | "Grows to twice what you have paid, as payments clear ({SETTLE_DAYS} days), up to $1,000. After three steady months it follows your monthly spend, up to $10,000, by itself. Prepaying raises it at once." |
| 447 | )), |
| 448 | Trust::Established => Some("Follows your monthly spend, up to $10,000, by itself. Prepaying raises it at once, and you can ask for more.".to_owned()), |
| 449 | Trust::Reviewed | Trust::Internal => None, |
| 450 | }; |
| 451 | Ok(Limit { |
| 452 | workspace, |
| 453 | account: account.id, |
| 454 | account_name: account.name, |
| 455 | spent_micros: spent, |
| 456 | default_spend_limit, |
| 457 | available_micros: available, |
| 458 | growth, |
| 459 | trust, |
| 460 | exposure_micros: exposure, |
| 461 | ceiling_micros: ceiling, |
| 462 | trust_ceiling_micros: trust_ceiling, |
| 463 | spend_limit_micros: spend_limit, |
| 464 | state, |
| 465 | message, |
| 466 | prepaid_micros: prepaid, |
| 467 | max_ceiling_micros: max_ever.filter(|_| plan != PlanKind::Free), |
| 468 | raise_once_micros: raise_once, |
| 469 | raised_at, |
| 470 | first_month, |
| 471 | }) |
| 472 | } |
| 473 | |
| 474 | /// Whether the workspace's plan is in its first billing cycle. |
| 475 | pub(crate) async fn first_month(&self, workspace: &str) -> Result<bool> { |
| 476 | Ok(match self.plan_cycle(workspace).await? { |
| 477 | Some((started_at, period_end)) => in_first_cycle(&started_at, period_end.as_deref(), &rfc3339(now_ms())), |
| 478 | None => false, |
| 479 | }) |
| 480 | } |
| 481 | |
| 482 | /// Real money the workspaces have paid g1t, cleared: usage payments and |
| 483 | /// the plan's price. Nothing in test mode, and credits g1t gave are not |
| 484 | /// payments. |
| 485 | pub(crate) async fn live_paid(&self, members: &[JsValue]) -> Result<i64> { |
| 486 | if !self.stripe.as_ref().is_some_and(crate::stripe::Stripe::live) { |
| 487 | return Ok(0); |
| 488 | } |
| 489 | let marks = vec!["?"; members.len().max(1)].join(", "); |
| 490 | let settled = rfc3339(now_ms() - SETTLE_DAYS * 24 * 60 * 60 * 1000); |
| 491 | Ok(self |
| 492 | .db |
| 493 | .prepare(format!( |
| 494 | "SELECT |
| 495 | (SELECT COALESCE(SUM(amount_micros), 0) FROM ledger |
| 496 | WHERE workspace IN ({marks}) AND kind = 'top_up' AND reference NOT LIKE 'crd%' |
| 497 | AND (amount_micros < 0 |
| 498 | OR (disputed = 0 AND COALESCE(funding, '') <> 'prepaid' |
| 499 | AND created_at <= '{settled}'))) |
| 500 | + (SELECT COALESCE(SUM(amount_micros), 0) FROM plan_payments |
| 501 | WHERE workspace IN ({marks}) AND paid_at <= '{settled}') AS paid" |
| 502 | )) |
| 503 | .bind(&[members, members].concat())? |
| 504 | .first::<Paid>(None) |
| 505 | .await? |
| 506 | .and_then(|row| row.paid) |
| 507 | .unwrap_or(0)) |
| 508 | } |
| 509 | |
| 510 | /// This month's charges and last month's, across the workspaces. |
| 511 | async fn charged_months(&self, members: &[JsValue], month_start: &str) -> Result<(i64, i64)> { |
| 512 | #[derive(Deserialize)] |
| 513 | struct Charged { |
| 514 | this_month: Option<i64>, |
| 515 | last_month: Option<i64>, |
| 516 | } |
| 517 | let last_start = format!("{}-01", previous_month(&month_start[..7])); |
| 518 | let marks = vec!["?"; members.len().max(1)].join(", "); |
| 519 | let row = self |
| 520 | .db |
| 521 | .prepare(format!( |
| 522 | "SELECT |
| 523 | -SUM(CASE WHEN created_at >= '{month_start}' THEN amount_micros END) AS this_month, |
| 524 | -SUM(CASE WHEN created_at >= '{last_start}' AND created_at < '{month_start}' THEN amount_micros END) AS last_month |
| 525 | FROM ledger WHERE kind = 'usage' AND workspace IN ({marks}) AND created_at >= '{last_start}'" |
| 526 | )) |
| 527 | .bind(members)? |
| 528 | .first::<Charged>(None) |
| 529 | .await?; |
| 530 | Ok(row.map_or((0, 0), |r| (r.this_month.unwrap_or(0).max(0), r.last_month.unwrap_or(0).max(0)))) |
| 531 | } |
| 532 | |
| 533 | /// An Established ceiling, if the workspaces have paid steadily: three |
| 534 | /// full months of real spend, each invoiced and paid, nothing declined |
| 535 | /// in 90 days and nothing ever disputed. |
| 536 | async fn established(&self, members: &[JsValue]) -> Result<Option<i64>> { |
| 537 | let marks = vec!["?"; members.len().max(1)].join(", "); |
| 538 | let now = rfc3339(now_ms()); |
| 539 | let mut months = vec![]; |
| 540 | let mut month = previous_month(&now[..7]); |
| 541 | for _ in 0..3 { |
| 542 | months.push(month.clone()); |
| 543 | month = previous_month(&month); |
| 544 | } |
| 545 | #[derive(Deserialize)] |
| 546 | struct Count { |
| 547 | n: Option<i64>, |
| 548 | } |
| 549 | let troubled = self |
| 550 | .db |
| 551 | .prepare(format!( |
| 552 | "SELECT (SELECT COUNT(*) FROM ledger WHERE workspace IN ({marks}) AND disputed = 1) |
| 553 | + (SELECT COUNT(*) FROM limits WHERE workspace IN ({marks}) AND autopay_failed_at >= '{since}') AS n", |
| 554 | since = rfc3339(now_ms() - 90 * 24 * 60 * 60 * 1000) |
| 555 | )) |
| 556 | .bind(&[members, members].concat())? |
| 557 | .first::<Count>(None) |
| 558 | .await? |
| 559 | .and_then(|c| c.n) |
| 560 | .unwrap_or(0); |
| 561 | if troubled > 0 { |
| 562 | return Ok(None); |
| 563 | } |
| 564 | let mut charged = vec![]; |
| 565 | for month in &months { |
| 566 | #[derive(Deserialize)] |
| 567 | struct Month { |
| 568 | charged: Option<i64>, |
| 569 | unpaid: Option<i64>, |
| 570 | } |
| 571 | let next = { |
| 572 | let year: i32 = month[..4].parse().unwrap_or(1970); |
| 573 | let number: u32 = month[5..7].parse().unwrap_or(1); |
| 574 | if number == 12 { format!("{}-01", year + 1) } else { format!("{year}-{:02}", number + 1) } |
| 575 | }; |
| 576 | let row = self |
| 577 | .db |
| 578 | .prepare(format!( |
| 579 | "SELECT |
| 580 | (SELECT -SUM(amount_micros) FROM ledger WHERE kind = 'usage' AND workspace IN ({marks}) |
| 581 | AND created_at >= '{month}-01' AND created_at < '{next}-01') AS charged, |
| 582 | (SELECT COUNT(*) FROM workspace_invoices WHERE workspace IN ({marks}) AND reason = 'month' |
| 583 | AND period = '{month}' AND status <> 'paid') AS unpaid" |
| 584 | )) |
| 585 | .bind(&[members, members].concat())? |
| 586 | .first::<Month>(None) |
| 587 | .await?; |
| 588 | let Some(row) = row else { return Ok(None) }; |
| 589 | if row.unpaid.unwrap_or(0) > 0 { |
| 590 | return Ok(None); |
| 591 | } |
| 592 | charged.push(row.charged.unwrap_or(0)); |
| 593 | } |
| 594 | Ok(established_ceiling(&charged)) |
| 595 | } |
| 596 | |
| 597 | /// A refusal, with the reason, when the workspace's work is stopped. |
| 598 | /// None while billing is off: a g1t without payments has no limits. |
| 599 | pub(crate) async fn stopped<T>(&self, workspace: &str) -> Result<Option<Outcome<T>>> { |
| 600 | if self.stripe.is_none() { |
| 601 | return Ok(None); |
| 602 | } |
| 603 | let limit = self.limit_of(workspace).await?; |
| 604 | Ok((limit.state == LimitState::Stopped).then(|| { |
| 605 | Outcome::fail( |
| 606 | FailureCode::PaymentRequired, |
| 607 | limit.message.unwrap_or_else(|| "This workspace is over its limit.".to_owned()), |
| 608 | ) |
| 609 | })) |
| 610 | } |
| 611 | |
| 612 | pub(crate) async fn limit(&self, a: LimitArgs) -> Result<Outcome<Limit>> { |
| 613 | let workspace = a.workspace.to_lowercase(); |
| 614 | if !a.viewer.is_some_and(|viewer| viewer.is_member(&workspace)) { |
| 615 | return Ok(members_only()); |
| 616 | } |
| 617 | Ok(Outcome::Ok(self.limit_of(&workspace).await?)) |
| 618 | } |
| 619 | |
| 620 | /// What a source cost so far this month. `security`, `context`, |
| 621 | /// `storage` and `git` are charged by billing once the month is over |
| 622 | /// (see `storage`); `deployments` charges its own. |
| 623 | pub(crate) async fn note_pending(&self, a: NotePendingArgs) -> Result<bool> { |
| 624 | // The actions cache is the plan's to pay for; free workspaces are |
| 625 | // held to its quota instead. |
| 626 | if crate::storage::PLAN_ONLY.contains(&a.source.as_str()) && !self.has_plan(&a.workspace.to_lowercase()).await? { |
| 627 | return Ok(false); |
| 628 | } |
| 629 | let now = rfc3339(now_ms()); |
| 630 | let detail = a.detail.as_deref().map(str::trim).filter(|d| !d.is_empty()).map(|d| d.chars().take(200).collect::<String>()); |
| 631 | self.set_pending(&a.workspace, &a.source, &now[..7], a.cost_micros, detail.as_deref()).await?; |
| 632 | Ok(true) |
| 633 | } |
| 634 | |
| 635 | /// Charges the saved card of each workspace nearing its limit, for what |
| 636 | /// it owes, so that a workspace that pays never has its work stopped. |
| 637 | /// Only with live payments: test-mode payments are not money and lower |
| 638 | /// nothing. Not for a workspace's own spend limit, which means stop, nor |
| 639 | /// for enterprises, which are invoiced. A charge at the limit always |
| 640 | /// goes through, whatever the minimum charge. |
| 641 | pub(crate) async fn autopay(&self) -> Result<()> { |
| 642 | if !self.stripe.as_ref().is_some_and(crate::stripe::Stripe::live) { |
| 643 | return Ok(()); |
| 644 | } |
| 645 | #[derive(Deserialize)] |
| 646 | struct Candidate { |
| 647 | workspace: String, |
| 648 | } |
| 649 | let month_start = format!("{}-01", &rfc3339(now_ms())[..7]); |
| 650 | // With a card, and not already declined: a declined card waits for |
| 651 | // the owners, rather than being tried again every few minutes. |
| 652 | let candidates = self |
| 653 | .db |
| 654 | .prepare( |
| 655 | "SELECT DISTINCT ledger.workspace AS workspace |
| 656 | FROM ledger JOIN accounts ON accounts.workspace = ledger.workspace |
| 657 | LEFT JOIN limits ON limits.workspace = ledger.workspace |
| 658 | WHERE ledger.kind = 'usage' AND ledger.created_at >= ? AND accounts.customer_id IS NOT NULL |
| 659 | AND limits.autopay_failed_at IS NULL", |
| 660 | ) |
| 661 | .bind(&[month_start.as_str().into()])? |
| 662 | .all() |
| 663 | .await? |
| 664 | .results::<Candidate>()?; |
| 665 | for candidate in candidates { |
| 666 | let limit = self.limit_of(&candidate.workspace).await?; |
| 667 | // Near g1t's ceiling on what is unpaid; the spend limit is the |
| 668 | // owners' and stops work by itself, but what is owed is still owed. |
| 669 | let near = limit.ceiling_micros.is_some_and(|ceiling| limit.exposure_micros * 5 >= ceiling * 4); |
| 670 | if !near || limit.trust == Trust::Internal || limit.account.starts_with("ent_") { |
| 671 | continue; |
| 672 | } |
| 673 | let today = rfc3339(now_ms())[..10].to_owned(); |
| 674 | match self.invoice_workspace(&candidate.workspace, "threshold", &today).await? { |
| 675 | Ok(_) => {} |
| 676 | Err(why) => worker::console_log!("{}: no threshold invoice: {why}", candidate.workspace), |
| 677 | } |
| 678 | } |
| 679 | Ok(()) |
| 680 | } |
| 681 | |
| 682 | /// Closes last month for each workspace with a card on file: charges |
| 683 | /// what it owed when the month ended. Live payments only, once per |
| 684 | /// workspace and month; a declined card stops work until it is paid. |
| 685 | /// Comped workspaces owe nothing, and enterprises are invoiced. Only |
| 686 | /// here does the minimum charge apply: less carries over. |
| 687 | pub(crate) async fn close_months(&self) -> Result<()> { |
| 688 | if !self.stripe.as_ref().is_some_and(crate::stripe::Stripe::live) { |
| 689 | return Ok(()); |
| 690 | } |
| 691 | let now = rfc3339(now_ms()); |
| 692 | let month_start = format!("{}-01", &now[..7]); |
| 693 | let closing = previous_month(&now[..7]); |
| 694 | #[derive(Deserialize)] |
| 695 | struct Open { |
| 696 | workspace: String, |
| 697 | balance: Option<i64>, |
| 698 | } |
| 699 | let open = self |
| 700 | .db |
| 701 | .prepare( |
| 702 | "SELECT accounts.workspace AS workspace, |
| 703 | (SELECT SUM(amount_micros) FROM ledger |
| 704 | WHERE ledger.workspace = accounts.workspace AND ledger.created_at < ?1) AS balance |
| 705 | FROM accounts |
| 706 | WHERE accounts.customer_id IS NOT NULL |
| 707 | AND NOT EXISTS (SELECT 1 FROM month_closes |
| 708 | WHERE month_closes.workspace = accounts.workspace AND month_closes.month = ?2) |
| 709 | LIMIT 20", |
| 710 | ) |
| 711 | .bind(&[month_start.as_str().into(), closing.as_str().into()])? |
| 712 | .all() |
| 713 | .await? |
| 714 | .results::<Open>()?; |
| 715 | for account in open { |
| 716 | let record = |status: &str, amount: i64, payment: Option<&str>, error: Option<&str>| { |
| 717 | self.db |
| 718 | .prepare( |
| 719 | "INSERT OR IGNORE INTO month_closes (workspace, month, status, amount_micros, payment_id, error, closed_at) |
| 720 | VALUES (?, ?, ?, ?, ?, ?, ?)", |
| 721 | ) |
| 722 | .bind(&[ |
| 723 | account.workspace.as_str().into(), |
| 724 | closing.as_str().into(), |
| 725 | status.into(), |
| 726 | (amount as f64).into(), |
| 727 | crate::optional(payment), |
| 728 | crate::optional(error), |
| 729 | now.as_str().into(), |
| 730 | ]) |
| 731 | }; |
| 732 | let payer = self.account_of(&account.workspace).await?; |
| 733 | if payer.terms.kind == TermsKind::Comped || payer.id.starts_with("ent_") { |
| 734 | record("skipped", 0, None, None)?.run().await?; |
| 735 | continue; |
| 736 | } |
| 737 | let owed = (-account.balance.unwrap_or(0)).max(0); |
| 738 | if owed == 0 { |
| 739 | record("nothing", 0, None, None)?.run().await?; |
| 740 | continue; |
| 741 | } |
| 742 | if !worth_charging(owed, self.plans.min_charge_micros) { |
| 743 | // Under the minimum charge: a card payment's fee would be |
| 744 | // too much of it. It stays owed and goes on the next |
| 745 | // invoice that reaches the minimum. |
| 746 | record("carried", owed, None, None)?.run().await?; |
| 747 | continue; |
| 748 | } |
| 749 | match self.invoice_workspace(&account.workspace, "month", &closing).await? { |
| 750 | Ok(invoice) if invoice.status == "paid" => { |
| 751 | record("paid", invoice.amount_micros, Some(&invoice.invoice_id), None)?.run().await?; |
| 752 | } |
| 753 | Ok(invoice) => { |
| 754 | record("failed", invoice.amount_micros, Some(&invoice.invoice_id), Some("the card was declined"))?.run().await?; |
| 755 | } |
| 756 | Err(why) => { |
| 757 | record("nothing", 0, None, Some(&why))?.run().await?; |
| 758 | } |
| 759 | } |
| 760 | } |
| 761 | Ok(()) |
| 762 | } |
| 763 | |
| 764 | /// Emails a workspace's owners as it passes 50, 75, 90 and 100% of its |
| 765 | /// plan's included usage, its spend limit and g1t's ceiling, once each a |
| 766 | /// month; when its card was declined; and when a spend spike paused it. |
| 767 | /// The same alerts show in the app (`entitlements`). |
| 768 | pub(crate) async fn warn_limits(&self, identity: &worker::Fetcher) -> Result<()> { |
| 769 | if self.stripe.is_none() { |
| 770 | return Ok(()); |
| 771 | } |
| 772 | let now = rfc3339(now_ms()); |
| 773 | let month = &now[..7]; |
| 774 | #[derive(Deserialize)] |
| 775 | struct Candidate { |
| 776 | workspace: String, |
| 777 | } |
| 778 | let candidates = self |
| 779 | .db |
| 780 | .prepare( |
| 781 | "SELECT DISTINCT workspace FROM ledger WHERE kind = 'usage' AND created_at >= ?1 |
| 782 | UNION SELECT workspace FROM limits WHERE autopay_failed_at IS NOT NULL", |
| 783 | ) |
| 784 | .bind(&[format!("{month}-01").into()])? |
| 785 | .all() |
| 786 | .await? |
| 787 | .results::<Candidate>()?; |
| 788 | #[derive(Deserialize)] |
| 789 | struct Told { |
| 790 | autopay_failed_at: Option<String>, |
| 791 | declined_told_at: Option<String>, |
| 792 | } |
| 793 | #[derive(Deserialize)] |
| 794 | struct Sent { |
| 795 | meter: String, |
| 796 | level: Option<i64>, |
| 797 | } |
| 798 | for Candidate { workspace } in candidates { |
| 799 | let told = self |
| 800 | .db |
| 801 | .prepare("SELECT autopay_failed_at, declined_told_at FROM limits WHERE workspace = ?") |
| 802 | .bind(&[workspace.as_str().into()])? |
| 803 | .first::<Told>(None) |
| 804 | .await?; |
| 805 | let billing = format!("https://g1t.sh/{workspace}/-/billing"); |
| 806 | |
| 807 | // A declined card, once per decline. |
| 808 | if let Some(Told { autopay_failed_at: Some(failed), declined_told_at }) = &told { |
| 809 | if declined_told_at.as_deref().is_none_or(|at| at < failed.as_str()) { |
| 810 | let limit = self.limit_of(&workspace).await?; |
| 811 | let sent = notify( |
| 812 | identity, |
| 813 | &workspace, |
| 814 | &format!("g1t: the card for {workspace} was declined"), |
| 815 | &limit.message.clone().unwrap_or_else(|| format!("g1t could not charge the card on file for {workspace}.")), |
| 816 | "Update the card", |
| 817 | &billing, |
| 818 | ) |
| 819 | .await; |
| 820 | if sent { |
| 821 | self.db |
| 822 | .prepare("UPDATE limits SET declined_told_at = ? WHERE workspace = ?") |
| 823 | .bind(&[now.as_str().into(), workspace.as_str().into()])? |
| 824 | .run() |
| 825 | .await?; |
| 826 | } |
| 827 | } |
| 828 | } |
| 829 | |
| 830 | // 50, 75, 90 and 100%, once each a month and meter: only the |
| 831 | // highest new level is emailed. |
| 832 | let alerts = self.alerts_for(&workspace).await?; |
| 833 | if alerts.is_empty() { |
| 834 | continue; |
| 835 | } |
| 836 | let sent: Vec<Sent> = self |
| 837 | .db |
| 838 | .prepare("SELECT meter, MAX(level) AS level FROM alerts_sent WHERE workspace = ? AND month = ? GROUP BY meter") |
| 839 | .bind(&[workspace.as_str().into(), month.into()])? |
| 840 | .all() |
| 841 | .await? |
| 842 | .results::<Sent>()?; |
| 843 | for alert in alerts { |
| 844 | let already = sent.iter().find(|s| s.meter == alert.meter).and_then(|s| s.level).unwrap_or(0); |
| 845 | if i64::from(alert.level) <= already { |
| 846 | continue; |
| 847 | } |
| 848 | let subject = match alert.meter.as_str() { |
| 849 | "included" => format!("g1t: {workspace} has used {}% of its included usage", alert.level), |
| 850 | "spend_limit" => format!("g1t: {workspace} has used {}% of its spend limit", alert.level), |
| 851 | _ => format!("g1t: {workspace} has used {}% of its usage limit", alert.level), |
| 852 | }; |
| 853 | if notify(identity, &workspace, &subject, &alert.message, "Open billing", &billing).await { |
| 854 | self.db |
| 855 | .prepare( |
| 856 | "INSERT OR IGNORE INTO alerts_sent (workspace, month, meter, level, sent_at) VALUES (?1, ?2, ?3, ?4, ?5)", |
| 857 | ) |
| 858 | .bind(&[workspace.as_str().into(), month.into(), alert.meter.as_str().into(), alert.level.into(), now.as_str().into()])? |
| 859 | .run() |
| 860 | .await?; |
| 861 | } |
| 862 | } |
| 863 | } |
| 864 | self.tell_spikes(identity).await?; |
| 865 | Ok(()) |
| 866 | } |
| 867 | |
| 868 | pub(crate) async fn check_limit(&self, a: CheckLimitArgs) -> Result<Outcome<Limit>> { |
| 869 | Ok(Outcome::Ok(self.limit_of(&a.workspace).await?)) |
| 870 | } |
| 871 | |
| 872 | /// The owners' spend limit: anywhere up to what is available without |
| 873 | /// asking; once, up to twice the highest ceiling (`raise_once`), which |
| 874 | /// also raises g1t's ceiling to match. |
| 875 | pub(crate) async fn set_spend_limit(&self, a: SetSpendLimitArgs) -> Result<Outcome<Limit>> { |
| 876 | let workspace = a.workspace.to_lowercase(); |
| 877 | if a.actor.role_in(&workspace) != Some(Role::Owner) { |
| 878 | return Ok(Outcome::fail( |
| 879 | FailureCode::Forbidden, |
| 880 | "Only an owner can set the workspace's spend limit.", |
| 881 | )); |
| 882 | } |
| 883 | let before = self.limit_of(&workspace).await?; |
| 884 | let mut raising = false; |
| 885 | if let (Some(requested), false) = (a.spend_limit_micros, a.use_full_limit) { |
| 886 | match (before.available_micros, matches!(before.trust, Trust::Internal | Trust::Reviewed)) { |
| 887 | (_, true) | (None, _) => { |
| 888 | if requested < 0 { |
| 889 | return Ok(Outcome::fail(FailureCode::Invalid, "A spend limit cannot be negative.")); |
| 890 | } |
| 891 | } |
| 892 | (Some(available), false) => match self_serve(requested, available, before.raise_once_micros, a.raise_once) { |
| 893 | Ok(uses_raise) => raising = uses_raise, |
| 894 | Err(why) => return Ok(Outcome::fail(FailureCode::Invalid, why)), |
| 895 | }, |
| 896 | } |
| 897 | } |
| 898 | let now = rfc3339(now_ms()); |
| 899 | let limit = if a.use_full_limit { JsValue::NULL } else { a.spend_limit_micros.map_or(JsValue::NULL, |limit| (limit as f64).into()) }; |
| 900 | self.db |
| 901 | .prepare( |
| 902 | "INSERT INTO limits (workspace, spend_limit_micros, spend_limit_full, updated_at) VALUES (?1, ?2, ?3, ?4) |
| 903 | ON CONFLICT (workspace) DO UPDATE SET spend_limit_micros = ?2, spend_limit_full = ?3, updated_at = ?4", |
| 904 | ) |
| 905 | .bind(&[workspace.as_str().into(), limit, (if a.use_full_limit { 1 } else { 0 }).into(), now.as_str().into()])? |
| 906 | .run() |
| 907 | .await?; |
| 908 | if raising { |
| 909 | let raised = a.spend_limit_micros.unwrap_or_default(); |
| 910 | // The ceiling rises with it, once. |
| 911 | self.db |
| 912 | .prepare( |
| 913 | "UPDATE limits SET granted_ceiling_micros = MAX(COALESCE(granted_ceiling_micros, 0), ?2), |
| 914 | raised_at = ?3, updated_at = ?3 WHERE workspace = ?1 AND raised_at IS NULL", |
| 915 | ) |
| 916 | .bind(&[workspace.as_str().into(), (raised as f64).into(), now.as_str().into()])? |
| 917 | .run() |
| 918 | .await?; |
| 919 | let account = self.account_of(&workspace).await?; |
| 920 | self.audit(&account.id, "raise_once", &format!("{workspace} used its one-time raise: {}", dollars_plain(raised)), &a.actor.username) |
| 921 | .await?; |
| 922 | } |
| 923 | Ok(Outcome::Ok(self.limit_of(&workspace).await?)) |
| 924 | } |
| 925 | } |
| 926 | |
| 927 | /// Whether `owed` is enough to charge a card when a month closes: at least |
| 928 | /// the minimum charge (`MIN_CHARGE_MICROS`). Less carries over to the next |
| 929 | /// invoice. Charges at a limit do not ask. |
| 930 | pub(crate) fn worth_charging(owed: i64, min_charge: i64) -> bool { |
| 931 | owed > 0 && owed >= min_charge |
| 932 | } |
| 933 | |
| 934 | /// Emails the workspace's owners through identity. False if nothing was sent. |
| 935 | pub(crate) async fn notify(identity: &worker::Fetcher, workspace: &str, subject: &str, intro: &str, action: &str, link: &str) -> bool { |
| 936 | let args = g1t_contracts::identity::NotifyOwnersArgs { |
| 937 | workspace: workspace.to_owned(), |
| 938 | subject: subject.to_owned(), |
| 939 | intro: intro.to_owned(), |
| 940 | action: action.to_owned(), |
| 941 | link: link.to_owned(), |
| 942 | footer: "You get this because you own this workspace on g1t. Limits and alerts are explained at https://docs.g1t.sh/guides/usage-and-billing/#limits".to_owned(), |
| 943 | }; |
| 944 | match g1t_kit::call::<_, u32>(identity, "notify_owners", &args).await { |
| 945 | Ok(sent) => sent > 0, |
| 946 | Err(error) => { |
| 947 | worker::console_error!("could not tell {workspace}'s owners: {error}"); |
| 948 | false |
| 949 | } |
| 950 | } |
| 951 | } |
| 952 | |
| 953 | /// `2026-09` for `2026-10`, and `2025-12` for `2026-01`. |
| 954 | pub(crate) fn previous_month(month: &str) -> String { |
| 955 | let year: i32 = month[..4].parse().unwrap_or(1970); |
| 956 | let number: u32 = month[5..7].parse().unwrap_or(1); |
| 957 | if number == 1 { |
| 958 | format!("{}-12", year - 1) |
| 959 | } else { |
| 960 | format!("{year}-{:02}", number - 1) |
| 961 | } |
| 962 | } |
| 963 | |
| 964 | #[cfg(test)] |
| 965 | mod tests { |
| 966 | use super::*; |
| 967 | |
| 968 | #[test] |
| 969 | fn the_automatic_spend_limit_follows_last_month() { |
| 970 | assert_eq!(automatic_spend_limit(0), 200_000_000); |
| 971 | assert_eq!(automatic_spend_limit(50_000_000), 200_000_000); |
| 972 | assert_eq!(automatic_spend_limit(900_000_000), 1_800_000_000); |
| 973 | } |
| 974 | |
| 975 | #[test] |
| 976 | fn three_steady_months_make_a_workspace_established() { |
| 977 | assert_eq!(established_ceiling(&[900_000_000, 850_000_000, 950_000_000]), Some(2_700_000_000)); |
| 978 | assert_eq!(established_ceiling(&[5_000_000_000, 5_000_000_000, 5_000_000_000]), Some(10_000_000_000)); |
| 979 | assert_eq!(established_ceiling(&[900_000_000, 10_000_000, 950_000_000]), None); |
| 980 | assert_eq!(established_ceiling(&[900_000_000, 900_000_000]), None); |
| 981 | } |
| 982 | |
| 983 | #[test] |
| 984 | fn alerts_come_at_half_three_quarters_ninety_and_the_limit() { |
| 985 | assert_eq!(alert_level(0, 10_000_000), 0); |
| 986 | assert_eq!(alert_level(4_999_999, 10_000_000), 0); |
| 987 | assert_eq!(alert_level(5_000_000, 10_000_000), 50); |
| 988 | assert_eq!(alert_level(7_500_000, 10_000_000), 75); |
| 989 | assert_eq!(alert_level(8_999_999, 10_000_000), 75); |
| 990 | assert_eq!(alert_level(9_000_000, 10_000_000), 90); |
| 991 | assert_eq!(alert_level(10_000_000, 10_000_000), 100); |
| 992 | assert_eq!(alert_level(25_000_000, 10_000_000), 100); |
| 993 | // Nothing to measure against: no alert. |
| 994 | assert_eq!(alert_level(5, 0), 0); |
| 995 | } |
| 996 | |
| 997 | #[test] |
| 998 | fn amounts_under_the_minimum_carry_over_only_at_the_month_close() { |
| 999 | let min = 5_000_000; |
| 1000 | assert!(!worth_charging(0, min)); |
| 1001 | assert!(!worth_charging(4_990_000, min)); |
| 1002 | assert!(worth_charging(5_000_000, min)); |
| 1003 | assert!(worth_charging(12_000_000, min)); |
| 1004 | // $3 carried from last month and $2.50 this month: charged together. |
| 1005 | let carried = 3_000_000; |
| 1006 | assert!(!worth_charging(carried, min)); |
| 1007 | assert!(worth_charging(carried + 2_500_000, min)); |
| 1008 | } |
| 1009 | |
| 1010 | #[test] |
| 1011 | fn the_month_before_wraps_the_year() { |
| 1012 | assert_eq!(previous_month("2026-10"), "2026-09"); |
| 1013 | assert_eq!(previous_month("2026-01"), "2025-12"); |
| 1014 | } |
| 1015 | |
| 1016 | fn ceilings() -> Ceilings { |
| 1017 | Ceilings { new: 3_000_000, paid_min: 25_000_000, paid_max: 1_000_000_000 } |
| 1018 | } |
| 1019 | |
| 1020 | #[test] |
| 1021 | fn trust_grows_with_what_was_paid_within_bounds() { |
| 1022 | assert_eq!(ceilings().for_paid(5_000_000), 25_000_000); |
| 1023 | assert_eq!(ceilings().for_paid(100_000_000), 200_000_000); |
| 1024 | assert_eq!(ceilings().for_paid(10_000_000_000), 1_000_000_000); |
| 1025 | } |
| 1026 | |
| 1027 | #[test] |
| 1028 | fn a_new_paid_workspace_starts_at_a_hundred_dollars_and_only_goes_up() { |
| 1029 | let start = 100_000_000; |
| 1030 | // The first month: the starting ceiling, whatever was paid. |
| 1031 | assert_eq!(paid_ceiling(&ceilings(), start, true, 900_000_000, None), start); |
| 1032 | // After it, with little paid: never below the start. |
| 1033 | assert_eq!(paid_ceiling(&ceilings(), start, false, 20_000_000, None), start); |
| 1034 | assert_eq!(paid_ceiling(&ceilings(), start, false, 0, None), start); |
| 1035 | // Payments that cleared raise it: twice what was paid. |
| 1036 | assert_eq!(paid_ceiling(&ceilings(), start, false, 300_000_000, None), 600_000_000); |
| 1037 | // Established follows the monthly spend. |
| 1038 | assert_eq!(paid_ceiling(&ceilings(), start, false, 300_000_000, Some(2_700_000_000)), 2_700_000_000); |
| 1039 | } |
| 1040 | |
| 1041 | #[test] |
| 1042 | fn the_first_billing_cycle_is_the_first_month() { |
| 1043 | // A plan that started on the 5th, paid through the 5th of next month. |
| 1044 | assert!(in_first_cycle("2026-10-05T10:00:00Z", Some("2026-11-05T10:00:00Z"), "2026-10-20T00:00:00Z")); |
| 1045 | // Renewed: the period now ends two months after the start. |
| 1046 | assert!(!in_first_cycle("2026-10-05T10:00:00Z", Some("2026-12-05T10:00:00Z"), "2026-11-20T00:00:00Z")); |
| 1047 | // No period known yet: the first 31 days. |
| 1048 | assert!(in_first_cycle("2026-10-05T10:00:00Z", None, "2026-11-04T00:00:00Z")); |
| 1049 | assert!(!in_first_cycle("2026-10-05T10:00:00Z", None, "2026-11-10T00:00:00Z")); |
| 1050 | // Day counting is exact across months and years. |
| 1051 | assert_eq!(days("1970-01-01"), 0); |
| 1052 | assert_eq!(days("2026-11-01") - days("2026-10-01"), 31); |
| 1053 | assert_eq!(days("2028-03-01") - days("2028-02-28"), 2); |
| 1054 | assert_eq!(days("2027-01-01") - days("2026-12-31"), 1); |
| 1055 | } |
| 1056 | |
| 1057 | #[test] |
| 1058 | fn owners_set_their_limit_up_to_the_highest_ceiling_without_asking() { |
| 1059 | // First month at $100; the highest ever is $100. |
| 1060 | let (available, once) = spend_bounds(100_000_000, 100_000_000, 0, false); |
| 1061 | assert_eq!(available, 100_000_000); |
| 1062 | assert_eq!(once, Some(200_000_000)); |
| 1063 | assert_eq!(self_serve(80_000_000, available, once, false), Ok(false)); |
| 1064 | assert_eq!(self_serve(100_000_000, available, once, false), Ok(false)); |
| 1065 | // Above it without the raise: refused, saying what to do. |
| 1066 | assert!(self_serve(150_000_000, available, once, false).unwrap_err().contains("one-time raise")); |
| 1067 | // With the raise: up to twice the highest ceiling, once. |
| 1068 | assert_eq!(self_serve(200_000_000, available, once, true), Ok(true)); |
| 1069 | assert!(self_serve(200_000_001, available, once, true).unwrap_err().contains("Raise my limit")); |
| 1070 | // Once used, it is gone. |
| 1071 | let (available, once) = spend_bounds(200_000_000, 200_000_000, 0, true); |
| 1072 | assert_eq!(once, None); |
| 1073 | assert_eq!(self_serve(200_000_000, available, once, false), Ok(false)); |
| 1074 | assert!(self_serve(300_000_000, available, once, true).unwrap_err().contains("is used")); |
| 1075 | // A ceiling that came down still leaves the highest one available. |
| 1076 | let (available, _) = spend_bounds(100_000_000, 400_000_000, 0, true); |
| 1077 | assert_eq!(available, 400_000_000); |
| 1078 | assert!(self_serve(-1, available, None, false).is_err()); |
| 1079 | } |
| 1080 | |
| 1081 | #[test] |
| 1082 | fn prepaying_raises_what_can_be_used_at_once() { |
| 1083 | // $500 prepaid this month, $120 used: nothing owed, $380 left. |
| 1084 | assert_eq!(exposure(120_000_000, 500_000_000, 0), (0, 380_000_000)); |
| 1085 | // Prepaid last month and carried in. |
| 1086 | assert_eq!(exposure(120_000_000, 0, 500_000_000), (0, 380_000_000)); |
| 1087 | // Used past the prepayment: the rest is owed. |
| 1088 | assert_eq!(exposure(620_000_000, 500_000_000, 0), (120_000_000, 0)); |
| 1089 | // Owed from before adds to this month's. |
| 1090 | assert_eq!(exposure(10_000_000, 0, -4_000_000), (14_000_000, 0)); |
| 1091 | // With a $100 ceiling and $500 prepaid, work stops at $600 of use, |
| 1092 | // not at $100. |
| 1093 | let ceiling = 100_000_000; |
| 1094 | assert_eq!(state(exposure(599_000_000, 500_000_000, 0).0, Some(ceiling)), LimitState::Warning); |
| 1095 | assert_eq!(state(exposure(600_000_000, 500_000_000, 0).0, Some(ceiling)), LimitState::Stopped); |
| 1096 | // And the owners may set their spend limit that much higher. |
| 1097 | assert_eq!(spend_bounds(ceiling, ceiling, 500_000_000, true).0, 600_000_000); |
| 1098 | } |
| 1099 | |
| 1100 | #[test] |
| 1101 | fn work_warns_at_eighty_percent_and_stops_at_the_ceiling() { |
| 1102 | assert_eq!(state(0, Some(100)), LimitState::Ok); |
| 1103 | assert_eq!(state(79, Some(100)), LimitState::Ok); |
| 1104 | assert_eq!(state(80, Some(100)), LimitState::Warning); |
| 1105 | assert_eq!(state(100, Some(100)), LimitState::Stopped); |
| 1106 | assert_eq!(state(1_000_000, None), LimitState::Ok); |
| 1107 | } |
| 1108 | } |