DashScope dropped cosyvoice-v1 from its REST-supported model list. v2
(and v3+) speak a different shape: voice / format / sample_rate live
under `input`, not `parameters`; non-streaming responses return
`output.audio.url` (signed OSS URL) instead of inline `output.audio.data`
base64. The previous adapter sent v1-shaped bodies to a bare
`https://dashscope-intl.aliyuncs.com/api/v1` baseURL and parsed
`audio.data`, which 404'd before the migration and would 200-with-no-
audio after — both invisible regressions for the gateway.
Adapter changes:
- Rewrite request body to v2 schema (voice/format under input).
- Add follow-up GET against `output.audio.url`; stream into ArrayBuffer
with a 25 MB hard cap and explicit drain-tracking finally, so a
misbehaving URL cannot exhaust memory and a half-read body cannot
hang a connection.
- Re-document baseURL contract: adapters do NOT append path; ops must
configure the FULL endpoint URL (root cause of the original 404
storm). DEFAULT_COSYVOICE_MODEL bumped to `cosyvoice-v2`, default
voice to `longxiaochun_v2`.
Voice catalog: regenerated with 19 representative cosyvoice-v2 voices
(assistant / customer-service / child / en-US / en-GB / ja-JP / ko-KR)
so the frontend voice picker is no longer a 2-entry stub. Full catalog
(100+) remains on the Alibaba docs page — we'll sync on demand rather
than scrape.
Seed script: `--dashscope-region intl|cn` (default `intl`),
`--dashscope-upstream-model cosyvoice-v2`, baseURL now resolves to
`https://<host>/api/v1/services/audio/tts/SpeechSynthesizer` so a
mis-typed region or path cannot reintroduce the 404.
Tests: new dashscope-cosyvoice.test.ts covers v2 body shape (asserts
`parameters` absent — regression), audio.url follow-up fetch, 401
propagation with `.status`, empty-envelope falling back into the
router's recoverable-error path, and catalog freshness (no leftover v1
ids). Verified locally against the staging DashScope key: 200 +
playable mp3 end to end.
RainbowBird
6ed0da86c3