sessionCompletionPolicy

SUPPORT · constant · 运行时值

导入

TypeScript

import { sessionCompletionPolicy } from '@jangts/agent-core/support';

JavaScript

import { sessionCompletionPolicy } from '@jangts/agent-core/support';

其他公开入口：@jangts/agent-core/support、@jangts/agent-core/support/model。

定义

字段结构

字段	类型	必需	说明
id	string	必需	只读。Registered identifier; the catalog key must match it.

成员目录

成员	用途
begin	Start one request. Throwing here rejects the request before it is sent, which is how a policy refuses a request shape it cannot judge after the fact.

成员详情

begin

Start one request.

Throwing here rejects the request before it is sent, which is how a policy refuses a request shape it cannot judge after the fact.

sessionCompletionPolicy.begin(facts: CompletionRequestFacts, fail: CompletionFailure): CompletionSession

Start one request.

Throwing here rejects the request before it is sent, which is how a policy refuses a request shape it cannot judge after the fact.

参数	类型	传递	说明
facts	CompletionRequestFacts	必需	—
fail	CompletionFailure	必需	—

facts 的字段

字段	类型	必需	说明
functions	boolean	必需	只读。Whether the call declared native functions through Core options.
toolChoice	unknown	可省略	只读。Effective tool_choice of the request body; an absent field reads as undefined.
allowEmptyText	boolean	必需	只读。Whether an empty response is allowed because JSON mode permits it.

返回： CompletionSession。

返回值结构

字段	类型	必需	说明
part	(part: ModelPart) => void	必需	Observe one part immediately before the provider yields it.
finish	(reason: string) => void	必需	Observe the stream's single finish_reason.
end	() => void	必需	Complete the response when the end-of-stream marker arrives.

使用示例

• 兼容 Provider 与自定义 Provider：Support 负责常见 Chat Completions HTTP/SSE 生命周期；App 可替换为自己的 ChatProvider。

真实服务端配置接入常见协议

入门 · Node.js

运行此例需要提供可用模型服务的连接配置。

TypeScript

import { ModelRunner, Support } from '@jangts/agent-core';
const provider = new Support.CompatibleModelProvider({ config: {
  baseUrl: process.env.MODEL_BASE_URL!, apiKey: process.env.MODEL_API_KEY!, model: process.env.MODEL_NAME!,
} });
const runner = new ModelRunner({ provider });
console.log((await runner.invoke('你好')).value);

JavaScript

import { ModelRunner, Support } from '@jangts/agent-core';
const provider = new Support.CompatibleModelProvider({ config: {
        baseUrl: process.env.MODEL_BASE_URL, apiKey: process.env.MODEL_API_KEY, model: process.env.MODEL_NAME,
    } });
const runner = new ModelRunner({ provider });
console.log((await runner.invoke('你好')).value);

直连工具线程的声明字段与 wire 映射

配置 · Node.js

只演示消息转换，无网络请求或工具执行。原始 tool_calls、tool_call_id 和宿主附加数据不透传。

TypeScript

import { Support } from '@jangts/agent-core';
const messages: Support.ProviderMessage[] = [
  { role: 'user', content: '查询资料' },
  { role: 'assistant', content: '', toolCalls: [
    { id: 'call-1', name: 'lookup', arguments: '{"query":"资料"}' },
  ] },
  { role: 'tool', content: '{"found":true}', toolCallId: 'call-1' },
];
console.log(Support.chatCompletionMessages(messages));

JavaScript

import { Support } from '@jangts/agent-core';
const messages = [
    { role: 'user', content: '查询资料' },
    { role: 'assistant', content: '', toolCalls: [
            { id: 'call-1', name: 'lookup', arguments: '{"query":"资料"}' },
        ] },
    { role: 'tool', content: '{"found":true}', toolCallId: 'call-1' },
];
console.log(Support.chatCompletionMessages(messages));

同一合同接入离线对象实现

配置 · Node.js

TypeScript

import { ModelRunner } from '@jangts/agent-core/model';
const provider = { async *stream(messages: readonly { content: string }[]) {
  yield '离线回答：' + messages.at(-1)!.content;
} };
console.log((await new ModelRunner({ provider }).invoke('你好')).value);

JavaScript

import { ModelRunner } from '@jangts/agent-core/model';
const provider = { async *stream(messages) {
        yield '离线回答：' + messages.at(-1).content;
    } };
console.log((await new ModelRunner({ provider }).invoke('你好')).value);

相关策略源码

• HTTP 失败映射和受控请求字段

相关定义

• CompletionFailure
• CompletionPolicy
• CompletionRequestFacts
• CompletionSession