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feat(fleet): poll async sandbox preparation - #1881
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📝 WalkthroughWalkthroughThe Cloud client adds opt-in asynchronous sandbox preparation with durable status polling and progress callbacks. Eligible CLI sandbox launches use this mode and report preparation progress. ChangesAsynchronous sandbox preparation
Estimated code review effort: 4 (Complex) | ~60 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant FleetCommand
participant ensureCloudFleetSandbox
participant CloudPreparationAPI
FleetCommand->>ensureCloudFleetSandbox: Send async-v1 request and progress callback
ensureCloudFleetSandbox->>CloudPreparationAPI: Send ensure request
CloudPreparationAPI-->>ensureCloudFleetSandbox: Return preparation envelope
loop While preparation is pending
ensureCloudFleetSandbox->>CloudPreparationAPI: Advance preparation or read status
CloudPreparationAPI-->>ensureCloudFleetSandbox: Return preparation envelope
ensureCloudFleetSandbox-->>FleetCommand: Report changed phase, state, and generation
end
ensureCloudFleetSandbox-->>FleetCommand: Return ready result or provisioning error
Suggested reviewers: 🚥 Pre-merge checks | ✅ 2 | ❌ 3❌ Failed checks (3 warnings)
✅ Passed checks (2 passed)
Full details: Linked Issues checkExplanation The PR implements the client and CLI parts of [ Resolution Implement or include the server-side durable preparation protocol and deletion-verifying sweeper required by [ Full details: Description checkExplanation The description provides a detailed summary and verification results, but it omits the required Test Plan, RelayFlow Proof, and Screenshots sections. It also does not provide the required RelayFlow change type and case. Resolution Add the required Test Plan section with updated test and manual-testing status. Add a RelayFlow Proof section with Change type set to feature and exactly one valid RelayFlow case path. Add the Screenshots section or state that screenshots are not applicable. ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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- 🪄 Fix CodeRabbit comments on this PR
🤖 Prompt to fix review comments
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Inline comments:
Review comments at @packages/cloud/src/fleet-sandbox.ts:
- Around line 1122-1128: Update the polling catch in the advance flow to rethrow
overall-signal cancellation and non-retryable errors, including authentication
failures. Retry only transport TypeErrors and per-request timeout or abort
errors; preserve the existing GET status-check behavior for those retryable
failures.
- Around line 1154-1190: In the initial ensure catch around authorizedApiFetch,
rethrow CloudAuthError before calling pollPreparation when asyncPreparation is
enabled. Keep polling for other errors so ambiguous network failures still
reconcile through durable status.
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Devin Review found 1 potential issue.
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| if (envelope.state === 'ready') { | ||
| if (!envelope.result) { | ||
| throw new Error('Cloud fleet sandbox preparation completed without a result.'); | ||
| } | ||
| return normalizeEnsureResult( | ||
| envelope.result, | ||
| resolved.cloudWorkspaceId, | ||
| sandboxIdentity.sandboxId, | ||
| sandboxIdentity.name, | ||
| input.providerId, | ||
| repoRevisions | ||
| ); |
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🔴 Invalid ready result strands sandbox
When an initial ready envelope contains an invalid result, normalizeEnsureResult fails without confirmed cleanup identity. The CLI cannot delete the newly provisioned sandbox.
Learn more
A ready envelope means Cloud completed preparation, but its nested result still requires validation. normalizeEnsureResult validates the result's sandbox identity, node name, provider, Relaycast target, and repository attestations. This call runs before the polling error wrapper when the ensure endpoint immediately returns ready. The CLI cleanup handler only deletes a newly minted sandbox when it receives a CloudFleetSandboxProvisionError with confirmed cleanup identity. A validation error here therefore bypasses cleanup even though Cloud has completed the sandbox.
Example: Cloud immediately returns ready for a --checkout spawn, but the result omits repoRevisions. Normalization rejects the result, and the generated sandbox remains allocated instead of being deleted.
Recommended fix: Catch ready-result normalization failures in consumePreparation and convert them to CloudFleetSandboxProvisionError. Set confirmedProvisioned only after the envelope and nested result establish the exact caller-declared cleanup identity; preserve identity-mismatch failures as unknown if that proof is absent.
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Fixed in ea5328c (the branch feature commit) (present at head b434874) — an invalid ready result is wrapped in CloudFleetSandboxProvisionError, confirmedProvisioned only when the exact sandboxId/name/provider is proven, otherwise outcomeUnknown. Test (packages/cloud/src/fleet-sandbox.test.ts): marks an invalid ready result safe only after exact async cleanup identity is proven.
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- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @packages/cloud/src/fleet-sandbox.ts:
- Around line 1254-1256: Update the asyncPreparation response handling after
readAsyncPreparationEnvelope so a 5xx response without an envelope uses
pollPreparation() recovery and the existing error wrapping, matching the
transport-error path instead of immediately throwing outcomeUnknown.
- Around line 1180-1183: Update pollPreparation so GET 404 responses are retried
only during a short grace period, such as ASYNC_PREPARATION_REQUEST_TIMEOUT_MS,
measured from the start of polling. After the grace period, let the 404 reach
endpointError so the outer catch reports an outcomeUnknown
CloudFleetSandboxProvisionError; do not replay ensure.
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1 issue found across 3 files (changes from recent commits).
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<file name="packages/cloud/src/fleet-sandbox.ts">
<violation number="1" location="packages/cloud/src/fleet-sandbox.ts:673">
P2: The default-provider spawn path enables async preparation without setting `providerId`, but this guard rejects cleanup proof even when the ready result matches the requested sandbox ID and reports Agent37. Malformed-ready failures then skip automatic cleanup; validate against the async mode's effective default provider.</violation>
</file>
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| if (!isObject(payload) || requestedProviderId === undefined) return false; | ||
| if (readString(payload, 'outcome') !== 'provisioned') return false; | ||
| if (readString(payload, 'sandboxId') !== expectedSandboxId) return false; | ||
| if (expectedNodeName !== undefined && readString(payload, 'nodeName') !== expectedNodeName) return false; | ||
| return readString(payload, 'providerId') === requestedProviderId; |
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P2: The default-provider spawn path enables async preparation without setting providerId, but this guard rejects cleanup proof even when the ready result matches the requested sandbox ID and reports Agent37. Malformed-ready failures then skip automatic cleanup; validate against the async mode's effective default provider.
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. When an issue isn't valid or won't be fixed in this PR, reply in its thread with the reason and then resolve the thread. At packages/cloud/src/fleet-sandbox.ts, line 673:
<comment>The default-provider spawn path enables async preparation without setting `providerId`, but this guard rejects cleanup proof even when the ready result matches the requested sandbox ID and reports Agent37. Malformed-ready failures then skip automatic cleanup; validate against the async mode's effective default provider.</comment>
<file context>
@@ -664,6 +664,19 @@ function confirmsProvisionedSandboxIdentity(
+ expectedNodeName: string | undefined,
+ requestedProviderId: CloudFleetSandboxProviderId | undefined
+): boolean {
+ if (!isObject(payload) || requestedProviderId === undefined) return false;
+ if (readString(payload, 'outcome') !== 'provisioned') return false;
+ if (readString(payload, 'sandboxId') !== expectedSandboxId) return false;
</file context>
| if (!isObject(payload) || requestedProviderId === undefined) return false; | |
| if (readString(payload, 'outcome') !== 'provisioned') return false; | |
| if (readString(payload, 'sandboxId') !== expectedSandboxId) return false; | |
| if (expectedNodeName !== undefined && readString(payload, 'nodeName') !== expectedNodeName) return false; | |
| return readString(payload, 'providerId') === requestedProviderId; | |
| if (!isObject(payload)) return false; | |
| const expectedProviderId = requestedProviderId ?? 'agent37'; | |
| if (readString(payload, 'outcome') !== 'provisioned') return false; | |
| if (readString(payload, 'sandboxId') !== expectedSandboxId) return false; | |
| if (expectedNodeName !== undefined && readString(payload, 'nodeName') !== expectedNodeName) return false; | |
| return readString(payload, 'providerId') === expectedProviderId; |
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Fixed in ea5328c (the branch feature commit) + 8a3776a (present at head b434874) — cleanup proof validates against the async mode's effective default provider (agent37) only after Cloud confirms the record; the wire omits providerId so Cloud keeps capability routing. Test (packages/cloud/src/fleet-sandbox.test.ts): marks an invalid ready result safe only after exact async cleanup identity is proven; attributes Agent37 cleanup identity once status confirms a lost unpinned async ensure.
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- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @packages/cloud/src/fleet-sandbox.ts:
- Around line 1212-1218: Update the non-OK handling in the fleet sandbox
preparation polling flow so HTTP 429 responses retry with GET while preserving
the existing retry eligibility checks; when a retry-after header is present, use
it to determine the retry delay.
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Cursor Bugbot has reviewed your changes using high effort and found 1 potential issue.
There are 3 total unresolved issues (including 2 from previous reviews).
❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.
Reviewed by Cursor Bugbot for commit aae3911. Configure here.
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Conflict: packages/cloud/src/fleet-sandbox.ts (ensure request + result normalization). Main (#1894) threads the answering Cloud apiUrl into normalizeEnsureResult so DEV Relaycast targets are trusted only from DEV Cloud. This branch already tracks the refreshed auth as `activeAuth` across ensure and preparation polls, so main's separate `responseAuth` is folded into `activeAuth` and `activeAuth.apiUrl` is passed. The async-ready normalization path (which merged textually clean) now passes `activeAuth.apiUrl` too, otherwise an async-prepared DEV sandbox would reject its Relaycast target. requestedProviderId (async defaults to agent37) is kept over main's input.providerId. Tests: main's #1912 relayfile-path assertions now also match the onPreparationProgress options argument this branch passes. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Session-Id: 756e53c4-bcb0-4453-a820-50043b9d1357
Covers the semantic merge with #1894: the async ready record must be normalized against the auth that read it, so a DEV Cloud result keeps its DEV Relaycast target and relaycastCloudApiUrl. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Session-Id: 756e53c4-bcb0-4453-a820-50043b9d1357
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Unpinned `fleet spawn --sandbox` now uses async-v1 whenever it has a sandbox identity, and the client was writing the implied `providerId: agent37` onto the ensure request. Cloud treats an explicit provider as the strict canary path, and the relay#1656 regression case (Flows v2 shard 21) failed: "The CLI pinned a provider". The wire now carries only the caller's provider; Cloud #4137 routes an unpinned async-v1 request to Agent37 itself. Agent37 attribution is applied only once Cloud has confirmed a durable async record (ready normalization and cleanup identity). Unconfirmed failures and legacy synchronous answers keep the caller's provider, so an older Cloud that capability-routes the request elsewhere is accepted instead of failing as a provider mismatch. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Session-Id: 756e53c4-bcb0-4453-a820-50043b9d1357
… its typed cause Cloud #4137 writes an async-v1 record `terminal` only after the provider rejected allocation, dispatch was abandoned, or the reaper proved the provider sandbox absent. The client used to map that to confirmedProvisioned and the CLI then issued a redundant delete without ever saying whether anything was left running. - A terminal record now yields `sandboxAbsent` plus a typed `preparationFailure` (code, phase, causeStage). The CLI names the cause and states no sandbox was left running, with no cleanup call. - The production smoke B shape (typed 503 relayfile_mount_failed / initial_sync_deadline) is reconciled through the exact identity's read-only status, never by replaying ensure, and the 503's causeStage labels the terminal record when Cloud does not persist it. - Accept any bounded phase token: #4137 added cli_credential_setup, relayfile_mount, workspace_skills and fleet_enrollment, which the old allowlist rejected, turning a mount-phase record into outcome-unknown. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Session-Id: 756e53c4-bcb0-4453-a820-50043b9d1357
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…layfile; changelog The exact checkout revision and the mount choice are part of the durable async request, so assert both reach ensure with preparationMode async-v1. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Session-Id: 756e53c4-bcb0-4453-a820-50043b9d1357
…y retry The one-time synchronous retry after an older Cloud rejects preparationMode wrapped CloudAuthError and caller cancellation as an outcome-unknown provisioning failure, unlike the initial and status paths (cubic, PR review). Tests: compatibility-retry auth and cancellation surface unchanged; an envelope-shaped invalid 5xx ensure body reconciles through status; the DEV Relaycast test now distinguishes ensure auth from the auth that read the ready record; the capability-routing fallback asserts async-v1 was sent. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Session-Id: 756e53c4-bcb0-4453-a820-50043b9d1357
…of failing A 2xx GET/POST to /preparation with an empty or malformed body threw a plain error, which the caller wrapped as confirmedProvisioned, so the CLI deleted a sandbox whose tick Cloud may already have committed (Cursor Bugbot, PR review). Treat it as a lost response: read durable status by exact identity before any further advance. An identity mismatch still surfaces as a diagnostic. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Session-Id: 756e53c4-bcb0-4453-a820-50043b9d1357
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2 issues found across 6 files (changes from recent commits).
Prompt for AI agents (unresolved issues)
Check if these issues are valid — if so, understand the root cause of each and fix them. When an issue isn't valid or won't be fixed in this PR, reply in its thread with the reason and then resolve the thread. If appropriate, use sub-agents to investigate and fix each issue separately.
<file name="packages/cli/src/cli/commands/fleet.test.ts">
<violation number="1" location="packages/cli/src/cli/commands/fleet.test.ts:2217">
P2: `ensureInput.preparationMode` will never be `'async-v1'` in this test: it passes `--name cloud-worker` without `--sandbox-id`, so `sandboxId` is `undefined` and `useAsyncPreparation` (fleet.ts:794) is false, which is why fleet.ts:800 only adds `preparationMode` conditionally. Drop the `preparationMode` assertion (and the stale comment above it); `forceProvision` and `providerId` are the only newly asserted fields the command actually sends.</violation>
<violation number="2" location="packages/cli/src/cli/commands/fleet.test.ts:2701">
P2: This call can never match: the test passes `--name reused-worker` without `--sandbox-id`, so `sandboxId` is `undefined`, `useAsyncPreparation` is false, and the command invokes `ensureCloudFleetSandbox(ensureInput)` with one argument, no `preparationMode`, and no `onPreparationProgress`. Remove this `toHaveBeenCalledWith` block (or add `--sandbox-id` and rename the sandbox to the required `fleet-sandbox-<uuid>` form if the intent is to cover the async path).</violation>
</file>
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| { from: 'user' } | ||
| ); | ||
|
|
||
| expect(ensureCloudFleetSandbox).toHaveBeenCalledWith( |
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P2: This call can never match: the test passes --name reused-worker without --sandbox-id, so sandboxId is undefined, useAsyncPreparation is false, and the command invokes ensureCloudFleetSandbox(ensureInput) with one argument, no preparationMode, and no onPreparationProgress. Remove this toHaveBeenCalledWith block (or add --sandbox-id and rename the sandbox to the required fleet-sandbox-<uuid> form if the intent is to cover the async path).
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. When an issue isn't valid or won't be fixed in this PR, reply in its thread with the reason and then resolve the thread. At packages/cli/src/cli/commands/fleet.test.ts, line 2701:
<comment>This call can never match: the test passes `--name reused-worker` without `--sandbox-id`, so `sandboxId` is `undefined`, `useAsyncPreparation` is false, and the command invokes `ensureCloudFleetSandbox(ensureInput)` with one argument, no `preparationMode`, and no `onPreparationProgress`. Remove this `toHaveBeenCalledWith` block (or add `--sandbox-id` and rename the sandbox to the required `fleet-sandbox-<uuid>` form if the intent is to cover the async path).</comment>
<file context>
@@ -2693,6 +2698,10 @@ describe('fleet command support', () => {
{ from: 'user' }
);
+ expect(ensureCloudFleetSandbox).toHaveBeenCalledWith(
+ expect.objectContaining({ preparationMode: 'async-v1', providerId: 'agent37', mountRelayfile: false }),
+ expect.objectContaining({ onPreparationProgress: expect.any(Function) })
</file context>
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Answered with evidence, no change. --name is the worker name, not --sandbox-name. With no --sandbox-name, packages/cli/src/cli/commands/fleet.ts:772 generates sbx_<uuid> (sandboxIdOption ?? (sandboxName === undefined ? \sbx_${randomUUID()}` : undefined)), so useAsyncPreparationis true for this unpinned/agent37 spawn and the async call shape is real. Mutation check at b43487424: forcinguseAsyncPreparationto false fails this test (12 failures in fleet.test.ts, including--checkout infers the Git root and forwards only the public revision attestationandfleet spawn --sandbox reuses an Agent37 target without a Relayfile mount`).
| // The exact checkout revision is part of the durable async request, so a | ||
| // resumed preparation clones the same commit it was accepted for. | ||
| expect(ensureInput).toMatchObject({ | ||
| preparationMode: 'async-v1', |
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P2: ensureInput.preparationMode will never be 'async-v1' in this test: it passes --name cloud-worker without --sandbox-id, so sandboxId is undefined and useAsyncPreparation (fleet.ts:794) is false, which is why fleet.ts:800 only adds preparationMode conditionally. Drop the preparationMode assertion (and the stale comment above it); forceProvision and providerId are the only newly asserted fields the command actually sends.
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. When an issue isn't valid or won't be fixed in this PR, reply in its thread with the reason and then resolve the thread. At packages/cli/src/cli/commands/fleet.test.ts, line 2217:
<comment>`ensureInput.preparationMode` will never be `'async-v1'` in this test: it passes `--name cloud-worker` without `--sandbox-id`, so `sandboxId` is `undefined` and `useAsyncPreparation` (fleet.ts:794) is false, which is why fleet.ts:800 only adds `preparationMode` conditionally. Drop the `preparationMode` assertion (and the stale comment above it); `forceProvision` and `providerId` are the only newly asserted fields the command actually sends.</comment>
<file context>
@@ -2211,7 +2211,12 @@ describe('fleet command support', () => {
+ // The exact checkout revision is part of the durable async request, so a
+ // resumed preparation clones the same commit it was accepted for.
expect(ensureInput).toMatchObject({
+ preparationMode: 'async-v1',
+ forceProvision: true,
+ providerId: 'agent37',
</file context>
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Answered with evidence, no change. --name is the worker name, not --sandbox-name. With no --sandbox-name, packages/cli/src/cli/commands/fleet.ts:772 generates sbx_<uuid> (sandboxIdOption ?? (sandboxName === undefined ? \sbx_${randomUUID()}` : undefined)), so useAsyncPreparationis true for this unpinned/agent37 spawn and the async call shape is real. Mutation check at b43487424: forcinguseAsyncPreparationto false fails this test (12 failures in fleet.test.ts, including--checkout infers the Git root and forwards only the public revision attestationandfleet spawn --sandbox reuses an Agent37 target without a Relayfile mount`).
…sandbox identity Chief review of #1881 (GO-WITH-CONDITIONS): - Every async 5xx was routed to status polling. An older Cloud that ignores preparationMode answers a typed 503 (relayfile_mount_failed, sandbox_capacity_exhausted) synchronously and has no status route, so the CLI polled 404s for 110 s and reported outcome-unknown: the smoke-B shape again. A typed error body (`code`) now goes to the legacy parser, which surfaces capacity as a definitive rejection and names code + causeStage; only envelopes and untyped gateway 5xx are reconciled through status. The 503 cause hint is gone: Cloud persists causeStage in the terminal record (cloud#4137 839d71e1b). - The production test now models the real async shape (mount tick -> cleanup_pending -> terminal with causeStage). - `fleet spawn --sandbox` prints the generated sbx_ identity before Cloud work and how to resume it with --sandbox-id, since the identity is not persisted across a killed process. - Retry-After on 202 progress (initial ensure and each tick) paces the next status/advance request. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Session-Id: 756e53c4-bcb0-4453-a820-50043b9d1357
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2 issues found across 5 files (changes from recent commits).
Prompt for AI agents (unresolved issues)
Check if these issues are valid — if so, understand the root cause of each and fix them. When an issue isn't valid or won't be fixed in this PR, reply in its thread with the reason and then resolve the thread. If appropriate, use sub-agents to investigate and fix each issue separately.
<file name="packages/cloud/src/fleet-sandbox.test.ts">
<violation number="1" location="packages/cloud/src/fleet-sandbox.test.ts:1482">
P3: The comment says "A 60 s default interval", but the client default is 1 s (DEFAULT_ASYNC_PREPARATION_POLL_INTERVAL_MS = 1_000). The test passes preparationPollIntervalMs: 60_000 itself, so drop "default" and say "A 60 s poll interval..." to avoid misreading the code's default.</violation>
</file>
<file name="packages/cli/src/cli/commands/fleet.test.ts">
<violation number="1" location="packages/cli/src/cli/commands/fleet.test.ts:1387">
P3: This assertion doesn't actually pin the sbx_<UUID> contract the command enforces elsewhere. `/^sbx_[0-9a-f-]{36}$/` accepts any 36-char lowercase hex/hyphen string, so it can't catch a regression where the generated ID stops being an RFC 4122 UUID. Use the same strict pattern as CLOUD_SANDBOX_ID_PATTERN in fleet.ts:99 so the test asserts the documented identity contract.</violation>
</file>
Reply with feedback, questions, or to request a fix.
View guided diff | Re-trigger cubic
| auth, | ||
| }); | ||
|
|
||
| // A 60 s default interval would time this test out if Retry-After were ignored. |
There was a problem hiding this comment.
P3: The comment says "A 60 s default interval", but the client default is 1 s (DEFAULT_ASYNC_PREPARATION_POLL_INTERVAL_MS = 1_000). The test passes preparationPollIntervalMs: 60_000 itself, so drop "default" and say "A 60 s poll interval..." to avoid misreading the code's default.
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. When an issue isn't valid or won't be fixed in this PR, reply in its thread with the reason and then resolve the thread. At packages/cloud/src/fleet-sandbox.test.ts, line 1482:
<comment>The comment says "A 60 s default interval", but the client default is 1 s (DEFAULT_ASYNC_PREPARATION_POLL_INTERVAL_MS = 1_000). The test passes preparationPollIntervalMs: 60_000 itself, so drop "default" and say "A 60 s poll interval..." to avoid misreading the code's default.</comment>
<file context>
@@ -1434,15 +1438,146 @@ describe('Cloud fleet sandbox client', () => {
+ auth,
+ });
+
+ // A 60 s default interval would time this test out if Retry-After were ignored.
+ await expect(
+ ensureCloudFleetSandbox(
</file context>
| // A 60 s default interval would time this test out if Retry-After were ignored. | |
| // A 60 s poll interval would time this test out if Retry-After were ignored. |
| `Cloud sandbox identity: ${String(ensureInput.sandboxId)}. If this command is interrupted, re-run it with --sandbox-id ${String(ensureInput.sandboxId)} to resume the same sandbox instead of creating another.`, | ||
| 'Cloud sandbox preparation: relayfile_mount_bootstrap (pending, generation 2).', | ||
| ]); | ||
| expect(ensureInput.sandboxId).toMatch(/^sbx_[0-9a-f-]{36}$/); |
There was a problem hiding this comment.
P3: This assertion doesn't actually pin the sbx_<UUID> contract the command enforces elsewhere. /^sbx_[0-9a-f-]{36}$/ accepts any 36-char lowercase hex/hyphen string, so it can't catch a regression where the generated ID stops being an RFC 4122 UUID. Use the same strict pattern as CLOUD_SANDBOX_ID_PATTERN in fleet.ts:99 so the test asserts the documented identity contract.
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. When an issue isn't valid or won't be fixed in this PR, reply in its thread with the reason and then resolve the thread. At packages/cli/src/cli/commands/fleet.test.ts, line 1387:
<comment>This assertion doesn't actually pin the sbx_<UUID> contract the command enforces elsewhere. `/^sbx_[0-9a-f-]{36}$/` accepts any 36-char lowercase hex/hyphen string, so it can't catch a regression where the generated ID stops being an RFC 4122 UUID. Use the same strict pattern as CLOUD_SANDBOX_ID_PATTERN in fleet.ts:99 so the test asserts the documented identity contract.</comment>
<file context>
@@ -1378,9 +1378,13 @@ describe('fleet command support', () => {
+ `Cloud sandbox identity: ${String(ensureInput.sandboxId)}. If this command is interrupted, re-run it with --sandbox-id ${String(ensureInput.sandboxId)} to resume the same sandbox instead of creating another.`,
'Cloud sandbox preparation: relayfile_mount_bootstrap (pending, generation 2).',
]);
+ expect(ensureInput.sandboxId).toMatch(/^sbx_[0-9a-f-]{36}$/);
expect(ensureInput.repos).toBeUndefined();
expect(ensureInput.repoRevisions).toBeUndefined();
</file context>
| expect(ensureInput.sandboxId).toMatch(/^sbx_[0-9a-f-]{36}$/); | |
| expect(ensureInput.sandboxId).toMatch( | |
| /^sbx_[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/ | |
| ); |
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Merge order (with cloud #4137)
preparationModeon a 400 field rejection, and parses a typed 5xx (relayfile_mount_failed,sandbox_capacity_exhausted) immediately instead of polling a status route that does not exist. Before that commit, relay-before-cloud reproduced the smoke-B outcome-unknown shape.--sandbox-id; persisting them and Ctrl-C reconciliation are tracked in fleet spawn --sandbox: persist in-flight async sandbox identity and reconcile on Ctrl-C #1925.Closes AgentWorkforce/cloud#4126
Summary
Verification
🤖 Generated with Claude Code
Note
Medium Risk
Changes core fleet sandbox provisioning, polling, and error/cleanup semantics across CLI and cloud client; extensive tests mitigate regressions but behavior under partial Cloud upgrades and network loss is complex.
Overview
fleet spawn --sandbox(unpinned or Agent37) now provisions through Cloud’s durableasync-v1flow instead of one long blocking ensure: the CLI prints the generatedsbx_identity up front (resume with--sandbox-id), streams preparation phase warnings viaonPreparationProgress, and passespreparationMode: 'async-v1'into@agent-relay/cloud.ensureCloudFleetSandboximplements the client contract: phase polling on/preparation(GET/POST), Retry-After pacing, reconciliation after dropped ensure/advance responses without replaying ensure or blind advances, and typed terminal failures (sandboxAbsent,preparationFailurewith code/phase/causeStage). Older Cloud still works via synchronous 201, a one-shot retry whenpreparationModeis rejected, and immediate handling of typed 5xx (e.g.relayfile_mount_failed, capacity) without status polling.Terminal prep failures skip redundant
deleteCloudFleetSandboxwhen Cloud confirms no sandbox is running.Reviewed by Cursor Bugbot for commit 5e51d9a. Bugbot is set up for automated code reviews on this repo. Configure here.