# 用户凭据 [English](credentials.md) | 中文 [dsh-credentials](../../packages/credentials/credentials) 的凭据 seam 把机密挡在配置之外：settings 分节与 `cordis.yml` 条目携带的是*引用*（环境变量名），值归 [dsh-credentials-local](../../packages/credentials/credentials-local) 这类提供方所有，消费方每个操作解析一次引用——LLM（大语言模型）适配器每次模型请求解析一次，因此轮换后的凭据无需任何重启即可作用于紧随其后的下一次请求。一条 seam 级规则约束每个提供方：空的存储值在任何地方都视为不存在。 来源：[`packages/credentials/credentials/src/index.ts`](../../packages/credentials/credentials/src/index.ts) ## 标识 引用以 POSIX 风格环境变量名命名一条凭据。brand 防止调用方将凭据引用与在包或进程之间传递的其他字符串混用；构造时校验 shell 标识符语法。 ```ts type-equiv /** Nominal reference to one credential: a POSIX-style environment-variable name. */ type CredentialRef = Branded<'CredentialRef'> ``` ## 解析 `resolve(ref)` 返回值及提供该值的来源层（由提供方定义）；未配置期间返回 `undefined`。消费方在每个操作中重新解析，绝不跨操作缓存——这种按操作进行的读取正是热更新机制。 ```ts type-equiv /** One resolved credential value and the source layer that supplied it. */ interface ResolvedCredential { /** The non-empty secret value. */ value: string /** Provider-defined source layer id (the local provider uses `env`, `file`, `project-env`, and `user-env`). */ source: string } ``` ## 描述 `describe(ref)` 在绝不暴露值的前提下回应配置界面：引用当前是否可解析、来自哪一层、`set` 当前能否成功。本地提供方把由当前进程环境供值的引用报告为 `writable: false`——那样的写入会表面成功而解析持续返回遮蔽值，因此 seam 直接拒绝，界面也得以提前把该引用渲染为只读。 ```ts type-equiv /** Source and writability facts for one reference, safe for configuration UIs — never the value. */ interface CredentialInfo { /** Whether {@link CredentialProvider.resolve} would currently return a value. */ configured: boolean /** Source layer currently supplying the value; absent while unconfigured. */ source?: string /** Whether {@link CredentialProvider.set} would currently succeed for this reference. */ writable: boolean } ``` ## 已提交的变更 `credentials/reference-updated (ref)` 在提供方管理的来源发生已提交变更后发出——`set`、`unset` 或在存储中观察到的外部编辑。进程环境自身的变化不可观测，永不发出事件。消费方不需要该事件（它们按操作重新解析）；它服务于配置界面刷新「已配置」徽标。 ## Cordis API Generated from source by `scripts/gen-cordis-catalog.ts` (verified fresh by `pnpm run verify-cordis-catalog` in doc-sync; regenerate with `pnpm run gen-cordis-catalog`) — the language sides differ only in locale-specific paired document paths. Signature blocks use a `ts cordis-catalog` fence and keep the original source JSDoc; dispatch modes are defined in the [primer](../cordis-primer.zh.md#dispatch-modes), and the framework-inherited `ctx` API lives in [cordis-api/inherited.md](../cordis-api/inherited.md). ### `ctx.authorization` — `AuthorizationService` `ctx.authorization`: a registry of credential-obtaining flows, one attempt at a time per key. ```ts cordis-catalog /** * Offer a way to obtain one credential. One flow per key: two plugins * claiming the same key would each write a record in their own format, and * whichever ran last would leave the other reading a payload it cannot parse. * * @param flow - the key it writes, its label, its methods, and its runner. * @returns Disposer that withdraws this flow. * @throws {AuthorizationError} code `DUPLICATE_FLOW` when the key is already claimed. */ registerFlow(flow: AuthorizationFlow): () => void /** * Every registered flow, for a surface listing what can be authorized. * @returns one entry per flow, in registration order. */ list(): readonly AuthorizationEntry[] /** * One registered flow. * @param key - the credential record to ask about. * @returns the entry, or undefined when no flow claims that key. */ describe(key: CredentialKey): AuthorizationEntry | undefined /** * Withdraw the attempt running for a key, if any. Separate from the * request's own signal because a request/response transport answers a Cancel * button on a second call, with no handle on the first one's signal. * @param key - the credential record whose attempt should stop. */ cancel(key: CredentialKey): void /** * Run one attempt to authorize a key, and report how it ended. * * One attempt per key at a time. A second caller is refused rather than * joined: the two would be prompting different humans through the same flow, * and the second would answer questions the first was asked. * * @param request - the key, the method, the surface, and the cancel signal. * @returns `authorized` once the flow's record is committed during this * attempt and observed, or `cancelled` when the human declined or the * caller withdrew. * @throws {AuthorizationError} code `NO_FLOW` when nothing claims the key, * `UNKNOWN_METHOD` when the named method is not one the flow offers, * `ALREADY_IN_FLIGHT` when an attempt is already running for the key, or * `NOT_COMMITTED` when the flow resolved without committing a record * during the attempt. */ async begin(request: AuthorizationRequest): Promise ``` Source: [`packages/credentials/authorization/src/index.ts`](../../packages/credentials/authorization/src/index.ts) ### `ctx.credentials` — `CredentialProvider` (abstract seam) Abstract credential service over two key spaces that answer two questions. A CredentialRef answers "what is behind this environment-variable name", layered over the process environment, the provider-managed store, and `.env` files. One seam-wide rule binds that half: an empty stored value is absent everywhere — `resolve` skips it, `describe` reports it unconfigured — so a blank never masquerades as a configured secret. A CredentialKey answers "what credential does this plugin hold for this id". Nothing can layer here — an authorization grant has no environment to be read from — so presence of the record is the whole fact, and modifyRecord is the only write path because a correct write depends on the current value (a token refresh is read-decide-replace under one lock). ```ts cordis-catalog /** * Resolve one reference to its current value. Resolution is per call: * consumers re-resolve at each operation and must not cache across * operations — that per-operation read is what makes a changed credential * reach the next operation without a restart. * @param ref - the reference to resolve. * @returns the value and its source, or `undefined` while unconfigured. */ abstract resolve(ref: CredentialRef): Promise /** * Describe one reference for configuration surfaces without exposing the * value. * @param ref - the reference to describe. * @returns configured state, supplying source, and writability. */ abstract describe(ref: CredentialRef): Promise /** * Durably store one value in the provider-managed writable source. Rejects * while a read-only source shadows the reference — the write would appear * to succeed while resolution keeps returning the shadowing value — and * rejects an empty value (use {@link unset}). * @param ref - the reference to store. * @param value - the non-empty secret value. */ abstract set(ref: CredentialRef, value: string): Promise /** * Remove one reference from the provider-managed writable source; removing * an absent reference is a no-op. Rejects while a read-only source shadows * the reference, like {@link set}. * @param ref - the reference to remove. */ abstract unset(ref: CredentialRef): Promise /** * Read one stored record. The value is returned as its owner wrote it; a * {@link GrantRecord} payload is not interpreted on the way out. * @param key - the record to read. * @returns the record, or `undefined` while none is stored. */ abstract readRecord(key: CredentialKey): Promise /** * Describe one record for configuration surfaces without exposing its value. * @param key - the record to describe. * @returns presence, discriminant, and writability. */ abstract describeRecord(key: CredentialKey): Promise /** * Enumerate every stored record's address and tag. Unlike the reference * half, which has no enumeration because configuration surfaces learn which * references exist from settings schemas, records have no such discovery * path: a surface that cannot list them cannot show what a user is * authorized for, nor find an orphan left by an uninstalled plugin. * @returns every stored record, values excluded. */ abstract listRecords(): Promise /** * Serialized read-modify-write over one record — the only write path. * `mutate` sees the record as it stands at the moment the write is * exclusive, and returning `undefined` leaves the entry untouched. Exclusion * holds across processes where the backing store supports it, which is what * makes a token refresh safe: two processes rotating one refresh token * concurrently would otherwise lose whichever wrote first. * @param key - the record to modify. * @param mutate - receives the current record and returns its replacement, or `undefined` to leave it. * @returns the record after the write, or the current one when `mutate` declined. */ abstract modifyRecord( key: CredentialKey, mutate: (current: CredentialRecord | undefined) => Promise, ): Promise /** * Remove one record; removing an absent record is a no-op. * @param key - the record to remove. */ abstract deleteRecord(key: CredentialKey): Promise ``` Source: [`packages/credentials/credentials/src/index.ts`](../../packages/credentials/credentials/src/index.ts) ### `authorization/*` events #### `authorization/settled` — emit One authorization attempt has finished and released its key. Fires for every terminal outcome, failures included, so a surface watching a key it did not start (a second browser tab) learns the attempt is over. ```ts cordis-catalog /** * One authorization attempt has finished and released its key. Fires for * every terminal outcome, failures included, so a surface watching a key it * did not start (a second browser tab) learns the attempt is over. * @mode emit * @param key - the credential record the finished attempt was authorizing. * @param settlement - how it ended, including the `failed` case its caller sees as a thrown error. */ 'authorization/settled'(key: CredentialKey, settlement: AuthorizationSettlement): void ``` Source: [`packages/credentials/authorization/src/index.ts`](../../packages/credentials/authorization/src/index.ts) ### `credentials/*` events #### `credentials/record-updated` — emit Committed change to a stored credential record: a `modifyRecord` that wrote, a `deleteRecord` that removed, or an external edit observed in storage. Separate from `credentials/reference-updated` because the two key grammars are disjoint — a listener that received both on one event could not tell which space a subject belongs to. Listener failures are contained on the same terms as `credentials/reference-updated`. ```ts cordis-catalog /** * Committed change to a stored credential record: a `modifyRecord` that * wrote, a `deleteRecord` that removed, or an external edit observed in * storage. Separate from `credentials/reference-updated` because the two key * grammars are disjoint — a listener that received both on one event could * not tell which space a subject belongs to. Listener failures are * contained on the same terms as `credentials/reference-updated`. * @param key - the record whose stored value changed. * @mode emit */ 'credentials/record-updated'(key: CredentialKey): void ``` Source: [`packages/credentials/credentials/src/types.ts`](../../packages/credentials/credentials/src/types.ts) #### `credentials/reference-updated` — emit Committed change to a provider-managed credential source: a `set`, an `unset`, or an external edit observed in storage. Ambient process-environment changes are not observable and never emit. Listener failures are contained and logged — a sync throw and an async rejection alike — without changing the committed operation's outcome, except `INVARIANT`-coded failures, which rethrow after every listener ran; that rethrow reaches the emitter only from synchronous listeners, so invariant checks on this event must not be async functions. ```ts cordis-catalog /** * Committed change to a provider-managed credential source: a `set`, an * `unset`, or an external edit observed in storage. Ambient * process-environment changes are not observable and never emit. Listener * failures are contained and logged — a sync throw and an async rejection * alike — without changing the committed operation's outcome, except * `INVARIANT`-coded failures, which rethrow after every listener ran; * that rethrow reaches the emitter only from synchronous listeners, so * invariant checks on this event must not be async functions. * @param ref - the reference whose stored value changed. * @mode emit */ 'credentials/reference-updated'(ref: CredentialRef): void ``` Source: [`packages/credentials/credentials/src/types.ts`](../../packages/credentials/credentials/src/types.ts)