#12113 changed admission control to reject with 429 instead of 503.
failoverWriter only held back responses with status >= 500, so a 429
rejection reached the client and the chain never spilled to its next
target.
Hold 429 as well. An admission rejection is still flagged and spills
without tripping the target. Any other 429 is not retryable, so it is
released to the client unchanged.
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
Assisted-by: Claude:claude-opus-5-5 [Claude Code]
The non-OpenAI endpoints (depth, detection, face_*, voice_*, images,
video, 3d) map a backend's gRPC Unimplemented to an echo 501 without the
gRPC status. The retry loop did not see a capability gap, and IsRetryable
is false for 501, so the client got 501 and the next target was never
tried. Treat a returned or written 501 as a capability gap.
Assisted-by: Claude:claude-opus-5-5
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
Treating ResourceExhausted as a capability gap skipped the target
without counting a failure, so a target that stays rate limited or out
of memory kept its traffic. It is now an ordinary retryable failure:
the request moves to the next target and the exhausted one trips.
Assisted-by: Claude:claude-opus-5-5
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
Rerank no longer sends top_n 0, which the upstream rejects. A
mid-stream upstream error frame now fails the call instead of ending
it as a short success. Temperature 0 is forwarded. An upstream 429
becomes ResourceExhausted, which failover skips like Unimplemented.
A localai-proxy config sends its own name upstream when upstream_model
is unset, and a chat proxy defaults to the tokenizer template so chat
reaches the upstream as messages.
Assisted-by: Claude:claude-opus-5-5
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
A chain request reached a cloud-proxy target with the client's model,
the chain name, whenever the target set no upstream_model: passthrough
forwards the body's model and translate falls back to it. The upstream
answered 404, which neither retries nor trips, while the liveness
probe, which checks the target's own name, kept passing.
PrepareTarget now sets the upstream model of a remote target to
proxy.upstream_model or the target name, the same name the probe uses.
The request pipeline and realtime chain stages both call it.
Assisted-by: Claude:claude-opus-5-5
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
The request path called HasChains on every request, and with no chains
it scanned the config source each time: the loader's lock plus a copy
and sort of every config, forever, on every installation without
chains. Sync now keeps an atomic flag and HasChains reads only that.
A chain added since the last sync is still served because Plan syncs
on a miss; only in-request retry waits for the next tick (at most 1s).
Assisted-by: Claude:claude-opus-5-5
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
An admission rejection or a disabled target moves the request to the
next target through Attempt.Skip, which records no failure. A 4xx
response no longer counts as a success. Requests skip body recording
when no chain is configured, and stop it once the model is known not
to be a chain.
Assisted-by: Claude:claude-opus-5-5
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
The retry wraps SetModelAndConfig, so each attempt binds the request
again from a replayed body. A 5xx of a chain request is held back until
the handler returns, and a streamed response is never retried.
Assisted-by: Claude:claude-opus-5-5
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
Ettore Di Giacinto