8660ad6c64
Summary of changes:
- Adds a new feature flag: runtime_metrics
- Declared in core/src/features.rs
- Added to core/config.schema.json
- Wired into OTEL init in core/src/otel_init.rs
- Enables on-demand runtime metric snapshots in OTEL
- Adds runtime_metrics: bool to otel/src/config.rs
- Enables experimental custom reader features in otel/Cargo.toml
- Adds snapshot/reset/summary APIs in:
- otel/src/lib.rs
- otel/src/metrics/client.rs
- otel/src/metrics/config.rs
- otel/src/metrics/error.rs
- Defines metric names and a runtime summary builder
- New files:
- otel/src/metrics/names.rs
- otel/src/metrics/runtime_metrics.rs
- Summarizes totals for:
- Tool calls
- API requests
- SSE/streaming events
- Instruments metrics collection in OTEL manager
- otel/src/traces/otel_manager.rs now records:
- API call counts + durations
- SSE event counts + durations (success/failure)
- Tool call metrics now use shared constants
- Surfaces runtime metrics in the TUI
- Resets runtime metrics at turn start in tui/src/chatwidget.rs
- Displays metrics in the final separator line in
tui/src/history_cell.rs
- Adds tests
- New OTEL tests:
- otel/tests/suite/snapshot.rs
- otel/tests/suite/runtime_summary.rs
- New TUI test:
- final_message_separator_includes_runtime_metrics in
tui/src/history_cell.rs
Scope:
- 19 files changed
- ~652 insertions, 38 deletions
<img width="922" height="169" alt="Screenshot 2026-01-30 at 4 11 34 PM"
src="https://github.com/user-attachments/assets/1efd754d-a16d-4564-83a5-f4442fd2f998"
/>
codex-core
This crate implements the business logic for Codex. It is designed to be used by the various Codex UIs written in Rust.
Dependencies
Note that codex-core makes some assumptions about certain helper utilities being available in the environment. Currently, this support matrix is:
macOS
Expects /usr/bin/sandbox-exec to be present.
When using the workspace-write sandbox policy, the Seatbelt profile allows
writes under the configured writable roots while keeping .git (directory or
pointer file), the resolved gitdir: target, and .codex read-only.
Linux
Expects the binary containing codex-core to run the equivalent of codex sandbox linux (legacy alias: codex debug landlock) when arg0 is codex-linux-sandbox. See the codex-arg0 crate for details.
All Platforms
Expects the binary containing codex-core to simulate the virtual apply_patch CLI when arg1 is --codex-run-as-apply-patch. See the codex-arg0 crate for details.