* perf(ci): cache the Rust build the unit shards compile from scratch
Every unit shard installs the workspace, and the root package builds through
maturin, so each of the eleven jobs compiles litellm-rust/crates/python-bridge
in release mode before a single test runs. That step measured 2m40s a shard on
2026-08-21, which is more wall clock than the entire unit tier spends running
tests, and none of it was cached: the uv cache covers wheels it downloads, not
wheels it builds, and a path dependency whose source moves every commit can
never hit that cache anyway.
A composite action now exports CARGO_TARGET_DIR to a fixed workspace path and
caches it alongside the Cargo registry, keyed on Cargo.lock. Cargo rebuilds only
what changed, so a warm job pays for the bridge crate rather than its whole
dependency graph. Measured locally, that is 34s cold against 8s warm, including
after a Python-only or Rust-only edit.
The absolute path matters: uv builds the wheel from its own working directory,
so a relative target directory lands the artifacts where nothing can find them
again.
* perf(ci): cache the Rust build in the other four workflows that sync the workspace
code-quality, mcp, documentation and the schema.d.ts check each install the
workspace and so each compile the bridge from scratch, measured at 138s, 177s,
163s and 154s on 2026-08-21. The lint job pays the same and is left to #37783,
which already owns that file's setup section.
* perf(ci): cache the Rust build in the lint job too
* fix(ci): cache cargo's own target directory instead of redirecting it
uv builds the wheel in place, so cargo already writes to litellm-rust/target,
which test-rust.yml has cached all along. Redirecting CARGO_TARGET_DIR bought
nothing and cost a GITHUB_ENV write that zizmor rejects as a code-execution
path.
* chore(ci): raise the job backstop for the added setup step
The cargo cache is a fifth bounded setup step, so the base's setup ceiling goes
30m to 35m and every job budget follows: 55 to 60, and proxy-server's 95 to 100.
check_workflow_startup_safety enforces exactly this sum, and failed on the first
push without it.
* perf(ci): cache the Rust build in the four remaining workflows that sync
Six workflows were wired; ten install the workspace. The four left out still
compile the pyo3 bridge from scratch.
test-terraform-provider.yml is the one that matters per PR: its endpoint-drift
job triggers on any change under litellm/proxy/**. The other three are a
scheduled load check, a manual mutation run, and the staging-push counts
publisher, whose gate syncs the project inside scripts/type_check_gate.py
rather than in a workflow step, so nothing in the file names the build it pays
for.
Adds a chat_completions route module to litellm-core, mirroring the messages
route, plus Anthropic Messages and Bedrock Converse provider configs. The
per-model `rust: true` opt-in now covers /chat/completions for both providers.
The core accepts an allowlisted subset (text conversations, non-streaming) and
returns CoreError::Unsupported for anything else, so tool calls, multimodal
content and streaming fall back to the Python path transparently.
Resolves LIT-5698
Nine workflow files existed only to make a single call to _test-unit-base.yml
with a different test-path. Adding a shard meant adding a file; changing
anything shared meant editing nine. One matrix caller replaces them, so a shard
is now one entry.
Check names are unchanged, which is the whole constraint. A reusable-workflow
job reports as "<job name> / <inner job name>", so setting `name` to the shard id
alone reproduces today's context strings exactly: the eleven the matrix produces
are eleven of the twenty-three "/ Run tests" contexts the branch ruleset
requires, matched string for string. No ruleset edit is needed and none should
be made for this.
Every matrix entry states its timeouts even where they equal the base defaults.
An absent matrix key renders as an empty string rather than falling back, and an
empty string is not a number, so a partially-specified entry would fail the call.
tests/proxy_unit_tests keeps test-unit-proxy-db.yml. It is already a matrix and
its shard-coverage guard reads that file by name, so folding it in belongs with
generalising that guard into assert_ci_coverage.py rather than here. Its twelve
shards are the remaining required contexts.
test-unit-documentation.yml stays too: it does not call the base workflow.
