Fix#198
- use llama-server's `timings` info if available in response body
- send "-1" for token/sec when not able to accurately calculate
performance
- optimize streaming body search for metrics information
llama-swap can strip specific keys in JSON requests. This is useful for removing the ability for clients to set sampling parameters like temperature, top_k, top_p, etc.
Refactor internal upstream process life cycle management to recover better from unexpected situations. With this change llama-swap should never need to be restarted due to a crashed upstream child process. The `StateFailed` state was removed in favour of always trying to start/restart a process.
The profile slug in a model name, `profile:model`, is specific to
llama-swap. This strips `profile:` out of the model name request so
upstreams that expect just `model` work and do not require knowing about
the profile slug.
* remove catch-all route to upstream proxy (it was broken anyways)
* add /upstream/:model_id to swap and route to upstream path
* add /upstream HTML endpoint and unlisted option
* add /upstream endpoint to show a list of available models
* add `unlisted` configuration option to omit a model from /v1/models and /upstream lists
* add favicon.ico
Rewrite the swap behaviour so that in-flight requests block process swapping until they are completed.
Additionally:
- add tests for parallel requests with proxy.ProxyManager and proxy.Process
- improve Process startup behaviour and simplified the code
- stopping of processes are sent SIGTERM and have 5 seconds to terminate, before they are killed
Refactor code to support starting of multiple back end llama.cpp servers. This functionality is exposed as `profiles` to create a simple configuration format.
Changes:
* refactor proxy tests to get ready for multi-process support
* update proxy/ProxyManager to support multiple processes (#7)
* Add support for Groups in configuration
* improve handling of Model alias configs
* implement multi-model swapping
* improve code clarity for swapModel
* improve docs, rename groups to profiles in config
* Make starting upstream process on-demand (#10)
* Add automatic unload of model after TTL is reached
* add `ttl` configuration parameter to models in seconds, default is 0 (never unload)
