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// SPDX-License-Identifier: Apache-2.0
//! Error body of every non-2xx Hive response: `{"error":{...}}`.
use serde::{Deserialize, Serialize};
/// Machine-readable error code. Unknown codes from a newer service decode as
/// [`HiveErrorCode::Unknown`] and are handled by HTTP status.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum HiveErrorCode {
/// 400, device flow: the user has not approved yet; poll again after `interval`.
AuthorizationPending,
/// 400, device flow: polling too fast; add 5 s to the interval.
SlowDown,
/// 400, device flow: the device code expired; start again.
ExpiredToken,
/// 400, device flow: the user refused.
AccessDenied,
/// 400: body failed validation or carried unknown fields.
InvalidRequest,
/// 401: access token missing, expired or not for this instance.
Unauthorized,
/// 402: the organization's plan does not include Hive.
PlanRequired,
/// 403: the lease lacks the right this route needs.
ForbiddenRight,
/// 403 with `kind` (1.4): the organization switched this upload off.
/// Stop that kind of upload and drop its queue until a lease allows it.
UploadDisabled,
/// 404: unknown instance, vault, proposal or lease.
NotFound,
/// 409 with `limit`/`used`: every instance seat is taken.
InstanceLimit,
/// 409 with `expected`/`actual`: knowledge moved on.
RevisionConflict,
/// 409 with `reason` (1.5): the object is not in a state that allows
/// this.
InvalidState,
/// 401: the instance lease is past `grace_until`; renew or reconnect.
LeaseExpired,
/// 422: the service screening refused content the engine should have removed.
ScreeningRequired,
/// 429 with `retry_after_s`.
RateLimited,
/// 426 with `min_instance` (also in the `Hive-Min-Instance` header).
UpgradeRequired,
/// 401 with `revocation` (C0 2.0 E12, §3.17.3): a workspace admin
/// revoked this instance; every engine route answers it until a new
/// connect. Never retried.
InstanceRevoked,
/// Release B quotas (Hive API §8.1): `resource`, `limit`, `used`,
/// `reset_at`. Counted resources (`registered_instances`,
/// `private_vaults`) answer 409 (`registered_instances` in Personal adds
/// `cooldown_days`, `reset_at` = when a cooling-down slot frees);
/// monthly ones (`transfer_bytes`, `bus_messages`) answer 429 with
/// `retry_after_s` and `Retry-After` until `reset_at`. Never overage:
/// the engine waits, its outbox keeps local work.
QuotaExceeded,
/// 403 with `member` (dotted policy path) and `level` (the outermost
/// level whose document refuses; consent refusals add `action`): Hive
/// itself enforces an `x-enforcement: server` policy member (§7.2).
PolicyDenied,
/// Any code this engine does not know.
#[serde(other)]
Unknown,
}
impl HiveErrorCode {
/// HTTP status the service answers with for this code.
pub fn http_status(self) -> u16 {
match self {
Self::AuthorizationPending
| Self::SlowDown
| Self::ExpiredToken
| Self::AccessDenied
| Self::InvalidRequest => 400,
Self::Unauthorized | Self::LeaseExpired | Self::InstanceRevoked => 401,
Self::PlanRequired => 402,
Self::ForbiddenRight | Self::UploadDisabled | Self::PolicyDenied => 403,
Self::NotFound => 404,
Self::InstanceLimit | Self::RevisionConflict | Self::InvalidState => 409,
Self::ScreeningRequired => 422,
Self::UpgradeRequired => 426,
// 409 for counted resources; the monthly ones, the common case
// on data routes, are 429.
Self::RateLimited | Self::QuotaExceeded => 429,
Self::Unknown => 500,
}
}
}
/// The `error` object.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct HiveErrorDetailV1 {
pub code: HiveErrorCode,
/// Human-readable, safe to show; never contains secrets or tokens.
pub message: String,
#[serde(default, skip_serializing_if = "Option::is_none")]
pub retry_after_s: Option<u64>,
/// `instance_limit`: seats in the plan; `quota_exceeded`: the quota
/// (bytes for `transfer_bytes`, so wider than 32 bits).
#[serde(default, skip_serializing_if = "Option::is_none")]
pub limit: Option<u64>,
/// `instance_limit`: seats in use; `quota_exceeded`: what is used.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub used: Option<u64>,
/// `quota_exceeded`: the quota (`registered_instances`, `private_vaults`,
/// `transfer_bytes`, `bus_messages`, or one a newer Hive adds).
#[serde(default, skip_serializing_if = "Option::is_none")]
pub resource: Option<String>,
/// `quota_exceeded`: when it frees (RFC 3339; `null` when nothing frees
/// by itself).
#[serde(default, skip_serializing_if = "Option::is_none")]
pub reset_at: Option<String>,
/// `quota_exceeded` `registered_instances`: the Personal slot cool-down.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub cooldown_days: Option<u32>,
/// `policy_denied`: the dotted member path that refused.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub member: Option<String>,
/// `policy_denied`: the outermost level whose document refuses.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub level: Option<String>,
/// `policy_denied` of `consent_required_for`: the action.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub action: Option<String>,
/// `revision_conflict`: revision the client expected.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub expected: Option<u64>,
/// `revision_conflict`: current revision.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub actual: Option<u64>,
/// `upgrade_required`: lowest engine version accepted.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub min_instance: Option<String>,
/// `upload_disabled`: which upload the organization switched off.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub kind: Option<HiveUploadKind>,
/// 1.5: machine-readable detail of the code (`[a-z_]`, ≤ 64), e.g.
/// `required`.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub reason: Option<String>,
/// 1.5: the request field the error is about (`invalid_request`).
#[serde(default, skip_serializing_if = "Option::is_none")]
pub field: Option<String>,
/// 1.6: the proposal an error is about (`proposal_state`, `not_found`).
#[serde(default, skip_serializing_if = "Option::is_none")]
pub number: Option<u64>,
/// `not_permitted` (Hive task #17): the check that failed, `presence`
/// (the agent has no live presence on the bus) or `role` (present in
/// another role).
#[serde(default, skip_serializing_if = "Option::is_none")]
pub check: Option<String>,
/// `not_permitted`: the task's role.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub role: Option<String>,
/// `not_permitted` with `check: role`: the role the agent is present in.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub agent_role: Option<String>,
/// 2.x `plan_required`: the feature the plan lacks (`repos`,
/// `internal_vaults`, …; absent from a 1.x Hive, where it means Hive
/// itself). `limit`/`used` carry a counted feature's numbers.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub feature: Option<String>,
/// 2.x `plan_required`: the lowest plan that includes `feature`
/// (`pro`, `team`, `enterprise`).
#[serde(default, skip_serializing_if = "Option::is_none")]
pub plan_needed: Option<String>,
}
/// An upload an organization can switch off (1.4).
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum HiveUploadKind {
Metrics,
Receipts,
#[serde(other)]
Unknown,
}
impl HiveErrorDetailV1 {
/// An error with only code and message.
pub fn new(code: HiveErrorCode, message: impl Into<String>) -> Self {
Self {
code,
message: message.into(),
retry_after_s: None,
limit: None,
used: None,
resource: None,
reset_at: None,
cooldown_days: None,
member: None,
level: None,
action: None,
expected: None,
actual: None,
min_instance: None,
kind: None,
reason: None,
field: None,
number: None,
check: None,
role: None,
agent_role: None,
feature: None,
plan_needed: None,
}
}
}
/// Body of every non-2xx response.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct HiveErrorBody {
pub error: HiveErrorDetailV1,
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn unknown_codes_decode_as_unknown() {
let body: HiveErrorBody =
serde_json::from_str(r#"{"error":{"code":"brand_new","message":"x","extra":1}}"#)
.unwrap();
assert_eq!(body.error.code, HiveErrorCode::Unknown);
}
/// C0 2.0 `routes/instance_revoked.error.json` decodes to its own code
/// (dogfood 25.10.: it decoded as `unknown`, shown as "401 (unknown)").
#[test]
fn instance_revoked_decodes_from_the_c0_fixture() {
let body: HiveErrorBody = serde_json::from_str(include_str!(
"../../tests/fixtures/hive-v2/routes/instance_revoked.error.json"
))
.unwrap();
assert_eq!(body.error.code, HiveErrorCode::InstanceRevoked);
assert_eq!(body.error.code.http_status(), 401);
}
/// C0 2.x `routes/quota_exceeded.error.json` (Release B §8.1): a byte
/// quota wider than 32 bits decodes, with resource and reset.
#[test]
fn quota_exceeded_decodes_from_the_c0_fixture() {
let body: HiveErrorBody = serde_json::from_str(include_str!(
"../../tests/fixtures/hive-v2/routes/quota_exceeded.error.json"
))
.unwrap();
let e = body.error;
assert_eq!(e.code, HiveErrorCode::QuotaExceeded);
assert_eq!(e.resource.as_deref(), Some("transfer_bytes"));
assert_eq!(e.limit, Some(53_687_091_200));
assert_eq!(e.used, Some(53_687_091_200));
assert_eq!(e.reset_at.as_deref(), Some("2026-11-01T00:00:00Z"));
assert_eq!(e.retry_after_s, Some(86_400));
}
/// The server's own shapes (API §7.2 and §3): `policy_denied {member,
/// level, action?}` and the Personal slot cool-down; a 1.x engine that does
/// not know them still decodes the body (unknown code, extra fields).
#[test]
fn policy_denied_and_cooldown_decode_and_stay_tolerant() {
let denied: HiveErrorBody = serde_json::from_str(
r#"{"error":{"code":"policy_denied","message":"x","member":"sharing.consent_required_for","level":"org","action":"trust_boundary"}}"#,
)
.unwrap();
assert_eq!(denied.error.code, HiveErrorCode::PolicyDenied);
assert_eq!(denied.error.code.http_status(), 403);
assert_eq!(
denied.error.member.as_deref(),
Some("sharing.consent_required_for")
);
assert_eq!(denied.error.level.as_deref(), Some("org"));
assert_eq!(denied.error.action.as_deref(), Some("trust_boundary"));
let slot: HiveErrorBody = serde_json::from_str(
r#"{"error":{"code":"quota_exceeded","message":"x","resource":"registered_instances","limit":3,"used":3,"reset_at":"2026-11-02T08:00:00Z","cooldown_days":7}}"#,
)
.unwrap();
assert_eq!(slot.error.cooldown_days, Some(7));
let newer: HiveErrorBody = serde_json::from_str(
r#"{"error":{"code":"quota_exceeded","message":"x","resource":"gpu_minutes","reset_at":null,"extra":1}}"#,
)
.unwrap();
assert_eq!(newer.error.resource.as_deref(), Some("gpu_minutes"));
assert_eq!(newer.error.reset_at, None);
}
#[test]
fn codes_map_to_their_status() {
assert_eq!(HiveErrorCode::PlanRequired.http_status(), 402);
assert_eq!(HiveErrorCode::InstanceLimit.http_status(), 409);
assert_eq!(HiveErrorCode::UpgradeRequired.http_status(), 426);
assert_eq!(HiveErrorCode::UploadDisabled.http_status(), 403);
}
#[test]
fn upload_disabled_names_its_kind_and_tolerates_new_ones() {
let body: HiveErrorBody = serde_json::from_str(
r#"{"error":{"code":"upload_disabled","message":"x","kind":"receipts"}}"#,
)
.unwrap();
assert_eq!(body.error.code, HiveErrorCode::UploadDisabled);
assert_eq!(body.error.kind, Some(HiveUploadKind::Receipts));
let newer: HiveErrorBody = serde_json::from_str(
r#"{"error":{"code":"upload_disabled","message":"x","kind":"traces"}}"#,
)
.unwrap();
assert_eq!(newer.error.kind, Some(HiveUploadKind::Unknown));
}
}