Artifacts：按引用解析真实产物

引用只包含 resolverId、artifactId 和可选 revision，真实内容由 App 的解析器提供。

defineArtifactCatalog(resolvers) 返回只读目录与异步 resolve(reference,context)。空身份、未知 resolverId、非函数 resolver 会拒绝。引用先形成快照，解析器接收同一引用及 App/取消/诊断上下文；等待期间或解析结束后取消，不作为成功返回。

产物 ID 或 revision 本身不是文件路径、访问权限、内容真实性证明或发布回执。解析器必须检查当前调用者、真实保存状态、版本和到期，返回 App 定义的 Value。Kit 不保存文件、不创建下载接口，也不保证仅凭引用即可交付给用户。

由简到繁的同业务示例

先解析一个明确的内存产物

入门 · Node.js

TypeScript

import { Artifacts } from '@jangts/agent-core/kits/artifacts';
const content = new Map([['manual', { text: 'Agent Core 使用说明', revision: '1' }]]);
const artifacts = Artifacts.defineArtifactCatalog([
  { id: 'document', resolve(reference) { const value = content.get(reference.artifactId); if (!value) throw new Error('产物不存在'); return value; } },
]);
const result = await artifacts.resolve({ resolverId: 'document', artifactId: 'manual' }, { app: {}, signal: new AbortController().signal });
console.log(result.text);

JavaScript

import { Artifacts } from '@jangts/agent-core/kits/artifacts';
const content = new Map([['manual', { text: 'Agent Core 使用说明', revision: '1' }]]);
const artifacts = Artifacts.defineArtifactCatalog([
    { id: 'document', resolve(reference) { const value = content.get(reference.artifactId); if (!value)
            throw new Error('产物不存在'); return value; } },
]);
const result = await artifacts.resolve({ resolverId: 'document', artifactId: 'manual' }, { app: {}, signal: new AbortController().signal });
console.log(result.text);

相同 resolve 增加真实权限与版本核对

配置 · Node.js

TypeScript

import { Artifacts } from '@jangts/agent-core/kits/artifacts';
type Value = { text: string; revision: string };
type App = { canRead: boolean; documents: Map<string, Value> };
const artifacts = Artifacts.defineArtifactCatalog<Value, App>([
  { id: 'document', async resolve(reference, { app, signal }) {
    signal.throwIfAborted();
    if (!app.canRead) throw new Error('没有产物读取权限');
    const value = app.documents.get(reference.artifactId);
    if (!value) throw new Error('产物不存在或已到期');
    if (reference.revision && reference.revision !== value.revision) throw new Error('产物版本已变化');
    return structuredClone(value);
  } },
]);
const app = { canRead: true, documents: new Map([['manual', { text: 'Agent Core 使用说明', revision: '1' }]]) };
console.log(await artifacts.resolve({ resolverId: 'document', artifactId: 'manual', revision: '1' }, { app, signal: new AbortController().signal }));

JavaScript

import { Artifacts } from '@jangts/agent-core/kits/artifacts';
const artifacts = Artifacts.defineArtifactCatalog([
    { id: 'document', async resolve(reference, { app, signal }) {
            signal.throwIfAborted();
            if (!app.canRead)
                throw new Error('没有产物读取权限');
            const value = app.documents.get(reference.artifactId);
            if (!value)
                throw new Error('产物不存在或已到期');
            if (reference.revision && reference.revision !== value.revision)
                throw new Error('产物版本已变化');
            return structuredClone(value);
        } },
]);
const app = { canRead: true, documents: new Map([['manual', { text: 'Agent Core 使用说明', revision: '1' }]]) };
console.log(await artifacts.resolve({ resolverId: 'document', artifactId: 'manual', revision: '1' }, { app, signal: new AbortController().signal }));

策略与实现

• 引用快照、解析器登记和取消