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* feat(proxy): offload spend tracking to a pod-local spend worker sidecar py-spy on the gateway showed the post-response _PROXY_track_cost_callback, spend-log and DBSpendUpdateWriter work running on the inference workers' event loop, so a DB or Redis stall backed up the request path. When LITELLM_SPEND_WORKER_ENABLED=true, _ProxyDBLogger serializes one compact typed SpendEvent per success and hands it to a SpendEventProducer that ships it over a unix socket (default) or loopback-only TCP to a sidecar started as `python -m gateway.spend_worker`. The sidecar runs the unchanged _ProxyDBLogger pipeline against the pod's PgBouncer (pooled_database_url). When the sidecar is unreachable, the buffer is full, or the gateway shuts down with events still queued or in flight, the producer applies LITELLM_SPEND_WORKER_ON_UNAVAILABLE (fallback in-process, or drop). The sidecar half-closes producers on SIGTERM and drains, the producer treats EOF as unavailable, and the gateway flushes buffered spend counters on shutdown. The sidecar honors LITELLM_LOG so its writes are visible in its own process log. Helm: both charts gain an opt-in spend-worker sidecar container sharing an emptyDir socket dir, and the componentized chart's HPA uses a ContainerResource CPU metric scoped to the gateway container so sidecar CPU does not drive inference scaling. * feat(terraform): opt-in spend-worker sidecar for the AWS and GCP gateway stacks Adds spend_worker_* inputs to both modules. On ECS Fargate the sidecar is a second, non-essential container in the gateway task; on Cloud Run it is a second container in the gateway service. Both listen on loopback TCP, share the gateway's DB/Redis/secret env, and set LITELLM_JOB_ROLE=spend_worker. Disabled by default. Plan-only tests cover both, and the terraform CI workflow now runs the gcp module too Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com> * test(proxy): retrieve a completed batch in the in-process spend path test The base now defers cost tracking for batches that are still in flight, so an in_progress batch never reaches update_database Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com> * refactor(proxy): rename the spend worker sidecar to collector Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com> * fix(proxy): run the collector from the installed litellm package and finish in-flight fallbacks on shutdown The sidecar command becomes python -m litellm.proxy.collector so the classic image, whose runtime stage copies only the installed package, can run it. The module now assembles DATABASE_URL and the pod-local pgbouncer URL itself, replacing gateway/collector.py The componentized collector sidecar inherits gateway.volumeMounts so custom CA mounts reach it. SpendEventProducer shields an in-progress fallback from the writer task cancellation so close() no longer loses an event already handed to the in-process pipeline Helpers used across modules (address_argument, should_store_prompts_and_responses_in_spend_logs, flush_spend_counters_on_shutdown) become public so the change adds no reportPrivateUsage errors Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com> * ci(terraform): drop the gcp job duplicated by the aws/gcp matrix Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com> * fix(collector): keep metrics env off the classic sidecar and reject shared loopback ports The classic chart no longer hands PROMETHEUS_METRICS_PORT and the billing metrics env to the collector container, and gives it the same /.npm scratch mount as the proxy on a read-only root. AWS and GCP now refuse a plan where the spend collector and the metrics sidecar bind the same loopback port. A regression test drives a sidecar crash mid-stream on asyncio and uvloop and checks no event is billed by both the sidecar and the in-process fallback; the producer docstring spells out why a failed drain() cannot double count Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com> * style(proxy): format pooled_database_url after the pgbouncer rebase Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com> * fix(proxy): keep the cache-hit preset key and survive dead producers on collector drain Cache hits updated the logging object after the early return, so the offloaded spend event carried preset_cache_key=None and the collector re-hashed reconstructed kwargs. Also guard write_eof() against producer transports uvloop already closed so one dead connection cannot abort the drain Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com> * fix(terraform): keep the gcp collector port off the metrics sidecar health port Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com> * fix(proxy): collector connects to Postgres directly under IAM or Entra token auth Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com> * fix(proxy): mark the collector's DATABASE_URL as pooled when it uses the pod's pgbouncer Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com> --------- Co-authored-by: yassin <yassin@berri.ai> Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com> |
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