DSH 0.2.0-rc.2 压缩上下文失败问题反馈

[c6huli]

DSH 0.2.0-rc.2 压缩上下文失败问题反馈

场景

DSH 版本：0.2.0-rc.2

Profile：web

操作系统：Windows

你碰到的问题或情况

执行 /compact 命令压缩上下文时，命令执行失败，返回错误：command.execute failed: gateway/internal: this.adapters.get(...)?.adapter.imageRequestPricing is not a function

复现步骤
在 DSH Web UI 中打开任意已有一定历史的会话

输入 /compact 并发送

命令立即返回上述错误，上下文压缩未执行

根因分析
该报错来自 DSH 运行时 LlmRuntime.imageRequestPricing 的调用点：this.adapters.get(provider)?.adapter.imageRequestPricing(provider, model)

这里的可选链 ?. 只保护了“适配器不存在”的情况，没有保护“适配器存在但未实现 imageRequestPricing 方法”的情况。当已注册的 LLM 适配器是鸭子类型（普通对象）且未实现该方法时，直接抛出 TypeError。

imageRequestPricing 是 DSH 0.1.2-rc.1 新增的接缝。第三方插件（如视觉类、搜索类插件）通过鸭子类型注册适配器时，不会自动获得该方法，导致 /compact 在调用 tokenMeter.measure() 解析图片计价时崩溃。

已验证的排查
卸载 @liustack/modsearch 后问题仍存在

卸载 @anionex/dsh-vision-toolkit 后问题仍存在

说明问题不局限于特定插件，而是 DSH 运行时缺少对适配器方法存在性的防御

影响
/compact 命令完全不可用

自动压缩静默失效

会话上下文持续增长，最终触及上下文窗口上限被截断

期望结果

在 LlmRuntime.imageRequestPricing 调用点增加方法存在性检查，或在适配器注册时通过基类/契约检查自动注入默认实现：const adapter = this.adapters.get(provider)?.adapter
if (typeof adapter?.imageRequestPricing === 'function') {
return adapter.imageRequestPricing(provider, model)
}
return undefined

[MalikAhed]

Your diagnosis matches the failure mode: optional chaining only handles a missing adapter, not an adapter object whose imageRequestPricing property is absent or non-callable. The guard should also preserve the adapter as the call receiver in case an implementation uses this, for example:

const adapter = this.adapters.get(provider)?.adapter;
const pricing = adapter?.imageRequestPricing;
return typeof pricing === 'function'
  ? pricing.call(adapter, provider, model)
  : undefined;

I’d add an adapter-contract test for a legacy duck-typed adapter, plus a /compact regression test that reaches tokenMeter.measure() with no pricing method. The token-meter caller should treat undefined as “no image-pricing data” rather than throw, and a debug log of provider/model would make third-party plugin diagnosis easier. If this resolves the report, please mark the reply as the accepted answer.

[c6huli]

I am very pleased to receive your message and sincerely thank you. This issue has troubled me greatly, and I have worked on a project to address it. The project can be found at https://github.com/c6huli/dsh-llm-pricing-guard, which resolves this issue.

[MalikAhed]

@c6huli if it helped please mark as answered
Thank you.