mirror of
https://github.com/diegosouzapw/OmniRoute.git
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76 lines
3.4 KiB
TypeScript
76 lines
3.4 KiB
TypeScript
/**
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* chatCore wire target-format resolver (Quality Gate v2 / Fase 9 — chatCore god-file
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* decomposition, #3501).
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*
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* Pure resolution of the provider alias + the upstream target format used to translate the request.
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* Model/custom overrides win first. A declared connection-level alternate protocol wins next. A
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* Responses-shaped inbound request otherwise keeps the Responses wire format, except for custom
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* OpenAI-compatible connections explicitly configured for Chat.
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* AgentRouter may inherit the inbound protocol when no explicit connection override exists.
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* Returns both `alias` (reused by the handler when stripping the `alias/` prefix off the upstream
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* model id) and `targetFormat`.
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*/
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import { PROVIDER_ID_TO_ALIAS, getModelTargetFormat } from "../../config/providerModels.ts";
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import { getRegistryEntry } from "../../config/providerRegistry.ts";
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import { resolveAlternateFormat } from "../../config/providers/alternateFormats.ts";
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import { getTargetFormat } from "../../services/provider.ts";
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import { FORMATS } from "../../translator/formats.ts";
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export function resolveChatCoreTargetFormat(opts: {
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provider: string;
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resolvedModel: string;
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apiFormat: string | undefined;
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sourceFormat?: string;
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customModelTargetFormat: string | undefined;
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providerSpecificData: unknown;
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nativeXaiResponsesPassthrough?: boolean;
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}) {
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const {
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provider,
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resolvedModel,
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apiFormat,
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sourceFormat,
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customModelTargetFormat,
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providerSpecificData,
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nativeXaiResponsesPassthrough = false,
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} = opts;
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const alias = PROVIDER_ID_TO_ALIAS[provider] || provider;
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const modelTargetFormat = getModelTargetFormat(alias, resolvedModel);
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const explicitConnectionTargetFormat = (
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providerSpecificData as { targetFormat?: unknown } | null | undefined
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)?.targetFormat;
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const inferredAgentRouterTargetFormat =
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provider === "agentrouter" &&
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!(typeof explicitConnectionTargetFormat === "string" && explicitConnectionTargetFormat) &&
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(sourceFormat === FORMATS.OPENAI_RESPONSES ||
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sourceFormat === FORMATS.OPENAI ||
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sourceFormat === FORMATS.CLAUDE)
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? sourceFormat
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: undefined;
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const providerTargetFormat = getTargetFormat(provider, providerSpecificData);
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const declaredConnectionAlternate = resolveAlternateFormat(
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getRegistryEntry(provider),
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providerSpecificData
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);
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const customOpenAICompatible = provider.startsWith("openai-compatible-");
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// #8994: model-level targetFormat overrides (from registry or custom-model DB override)
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// take precedence over apiFormat="responses" — otherwise Vertex Claude models with
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// targetFormat="claude" get wrongly routed to OpenAI Responses format.
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// #9161: a custom OpenAI-compatible Chat connection must likewise keep its configured
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// outbound protocol when a Responses-shaped client (for example Codex) calls /responses.
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// Registry-declared connection alternates are equally explicit: a DeepSeek connection set to
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// Anthropic must stay on /anthropic/v1/messages even when the caller speaks Responses.
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let targetFormat =
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modelTargetFormat ||
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customModelTargetFormat ||
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declaredConnectionAlternate?.format ||
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(apiFormat === "responses" && !customOpenAICompatible
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? FORMATS.OPENAI_RESPONSES
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: inferredAgentRouterTargetFormat || providerTargetFormat);
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if (nativeXaiResponsesPassthrough) targetFormat = FORMATS.OPENAI_RESPONSES;
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return { alias, targetFormat };
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}
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export type ChatCoreTargetFormat = ReturnType<typeof resolveChatCoreTargetFormat>;
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