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[2026] rollout support

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This commit is contained in:
Devin Zuczek
2026-10-12 14:59:14 -04:00
parent 4d6a88f20e
commit a0345af765
8 changed files with 413 additions and 16 deletions
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apps/match/src/match.app.ts
+46 -15
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@@ -38,6 +38,7 @@ import {
isClubMember,
isMatchmakingPolicy,
isPlayerBannedFromRoom,
isRolloutGameVersion,
MatchmakingErrorCode,
MessageType,
MOST_ACTIVE_CLUBHOUSE_LIMIT,
@@ -241,23 +242,46 @@ function tachyonServerFor(pool: TachyonServer[], roomInstanceId: number): Tachyo
/**
* The prefix of a sandbox server's generated id (see {@link tachyonPoolFor}) — `dev-1`,
* `dev-2` rather than the live pool's `tachyon-N`, so the (cosmetic) id the client
* displays says which pool it is on.
* displays says which pool it is on. The rollout pool's is `rollout-N` for the same reason.
*/
const SANDBOX_TACHYON_SERVER_ID_PREFIX = 'dev-'
const ROLLOUT_TACHYON_SERVER_ID_PREFIX = 'rollout-'
/** What decides which Tachyon pool a caller is served from; see {@link tachyonPoolFor}. */
interface TachyonCaller {
/** The account's `isSandbox` flag. */
isSandbox: boolean
/** Running a build under staged rollout (`ROLLOUT_GAME_VERSIONS`, off the token's `rn.ver`). */
isRollout: boolean
}
/**
* The pool the caller's instance is picked out of. A SANDBOX account runs against its own
* Tachyon servers, apart from the live pool, so the whole list is swapped for
* `TACHYON_HOST_PORT_SANDBOX` rather than any one entry: selection within it is the same
* instance-id round-robin {@link tachyonServerFor} applies to the live pool. When that var
* is unset a sandbox account falls back to the live pool, so an operator who runs no
* sandbox servers doesn't leave those accounts without voice.
* The pool the caller's instance is picked out of — one of three, each the same
* comma-separated list, with selection inside it the same instance-id round-robin
* {@link tachyonServerFor} applies to all of them:
*
* - `TACHYON_HOST_PORT_SANDBOX` for a SANDBOX account, which runs against its own servers
* apart from the live pool;
* - `TACHYON_HOST_PORT_ROLLOUT` for a caller on a build under staged rollout — the build
* `auth` only lets Discord supporters sign in on, which gets its own voice servers while
* it rolls out. Sessions are already split by build ({@link callerGameVersion}), so a
* rollout instance's players are all on that build and all land here together;
* - `TACHYON_HOST_PORT`, the live pool, for everyone else.
*
* Sandbox wins when both apply: a sandbox account on the rollout build is still a sandbox
* account. Either special pool left unset falls back to the live one, so an operator who
* runs no sandbox or rollout servers doesn't leave those callers without voice.
*/
function tachyonPoolFor(env: Env, isSandbox: boolean): TachyonServer[] {
function tachyonPoolFor(env: Env, caller: TachyonCaller): TachyonServer[] {
const sandbox = varOr(env.TACHYON_HOST_PORT_SANDBOX, '')
return isSandbox && sandbox.trim() !== ''
? tachyonPool(sandbox, SANDBOX_TACHYON_SERVER_ID_PREFIX)
: tachyonPool(varOr(env.TACHYON_HOST_PORT, ''))
if (caller.isSandbox && sandbox.trim() !== '') {
return tachyonPool(sandbox, SANDBOX_TACHYON_SERVER_ID_PREFIX)
}
const rollout = varOr(env.TACHYON_HOST_PORT_ROLLOUT, '')
if (!caller.isSandbox && caller.isRollout && rollout.trim() !== '') {
return tachyonPool(rollout, ROLLOUT_TACHYON_SERVER_ID_PREFIX)
}
return tachyonPool(varOr(env.TACHYON_HOST_PORT, ''))
}
/**
@@ -3088,8 +3112,11 @@ const app = new Hono<App>()
'`TACHYON_HOST_PORT` pool, chosen by instance id so every player in a session is',
'handed the same one, with a generated `voiceServerId` (`tachyon-1`, `tachyon-2`,',
'…). Both are empty when the pool is unset or the caller is in no instance. A',
'sandbox account is picked out of the `TACHYON_HOST_PORT_SANDBOX` pool instead, the same way,',
'with ids `dev-1`, `dev-2`, ….',
'sandbox account is picked out of the `TACHYON_HOST_PORT_SANDBOX` pool instead, the',
'same way, with ids `dev-1`, `dev-2`, …; a caller whose token’s `rn.ver` is a build',
'under staged rollout (`ROLLOUT_GAME_VERSIONS`, currently `20260323.14`) out of',
'`TACHYON_HOST_PORT_ROLLOUT`, with ids `rollout-1`, `rollout-2`, …. Sandbox wins when',
'both apply, and either special pool left unset falls back to the live one.',
'`experiments` carries the client’s networking flags.',
].join(' '),
security: AUTHED,
@@ -3130,9 +3157,13 @@ const app = new Hono<App>()
}
const account = await getAccount(c.env.DB, id)
// The instance's server, the same one every other player in it is handed — except
// that a SANDBOX account is picked out of the sandbox pool instead of the live one.
// that a SANDBOX account is picked out of the sandbox pool, and a caller on a
// rollout build out of the rollout pool, instead of the live one.
const tachyon = tachyonServerFor(
tachyonPoolFor(c.env, account?.isSandbox === true),
tachyonPoolFor(c.env, {
isSandbox: account?.isSandbox === true,
isRollout: isRolloutGameVersion(await callerVersion(c)),
}),
roomInstanceId
)