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48 changes: 3 additions & 45 deletions apps/web/src/app/api/openrouter/[...path]/route.ts
Original file line number Diff line number Diff line change
Expand Up @@ -97,12 +97,6 @@ import {
hasMiddleOutTransform,
} from '@/lib/ai-gateway/providers/openrouter/request-helpers';
import { scheduleAutoRoutingMirror } from '@/lib/ai-gateway/auto-routing-mirror';
import {
createStreamLifecycleTracker,
observeEventStream,
shouldObserveEventStream,
STREAM_ATTEMPT_HEADER,
} from '@/lib/ai-gateway/o11y/stream-lifecycle.server';

export const maxDuration = 800;

Expand Down Expand Up @@ -720,8 +714,6 @@ export async function POST(request: NextRequest): Promise<NextResponseType<unkno
authContext: Promise.resolve({ organizationId }),
});

const observesProvider = effectiveProviderContext.provider.id === 'custom';
const attemptId = observesProvider ? crypto.randomUUID() : null;
const response = await upstreamRequest({
path,
search: url.search,
Expand Down Expand Up @@ -769,9 +761,7 @@ export async function POST(request: NextRequest): Promise<NextResponseType<unkno
});

// Return a service unavailable error instead of the 402
const errorResponse = temporarilyUnavailableResponse();
if (attemptId) errorResponse.headers.set(STREAM_ATTEMPT_HEADER, attemptId);
return errorResponse;
return temporarilyUnavailableResponse();
}

if (response.status >= 400) {
Expand All @@ -786,29 +776,7 @@ export async function POST(request: NextRequest): Promise<NextResponseType<unkno
});
}

let clonedReponse = response.clone(); // reading from body is side-effectful
const observesStream = shouldObserveEventStream({
provider_id: effectiveProviderContext.provider.id,
status: response.status,
has_body: response.body !== null,
content_type: response.headers.get('content-type'),
});
const streamTracker =
observesStream && attemptId
? createStreamLifecycleTracker({
attempt_id: attemptId,
provider_id: effectiveProviderContext.provider.id,
api_kind: requestBodyParsed.kind,
})
: null;
if (streamTracker && clonedReponse.body) {
const owner = clonedReponse;
const body = clonedReponse.body;
clonedReponse = new Response(
observeEventStream(body, outcome => streamTracker.observe('provider', outcome), owner),
owner
);
}
const clonedReponse = response.clone(); // reading from body is side-effectful

if (!shouldBlockOnClassify) {
classifyResult = await awaitClassifyAbuse(classifyPromise);
Expand Down Expand Up @@ -845,7 +813,6 @@ export async function POST(request: NextRequest): Promise<NextResponseType<unkno
isUserByok: !!effectiveProviderContext.userByok,
});
if (errorResponse) {
if (attemptId) errorResponse.headers.set(STREAM_ATTEMPT_HEADER, attemptId);
return errorResponse;
}
}
Expand All @@ -857,17 +824,8 @@ export async function POST(request: NextRequest): Promise<NextResponseType<unkno
requestBodyParsed.kind
);
if (rewrittenResponse) {
// Rewritten streams are excluded because their final bytes cannot be compared to the source.
if (attemptId) rewrittenResponse.headers.set(STREAM_ATTEMPT_HEADER, attemptId);
return rewrittenResponse;
}

const finalResponse = wrapInSafeNextResponse(response);
if (attemptId) finalResponse.headers.set(STREAM_ATTEMPT_HEADER, attemptId);
if (!streamTracker || !finalResponse.body) return finalResponse;

return new NextResponse(
observeEventStream(finalResponse.body, outcome => streamTracker.observe('final', outcome)),
finalResponse
);
return wrapInSafeNextResponse(response);
}
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