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Renn F
3742483e1c
Every agent MCP server is launched as `uv run python -m roboco.mcp.<server>` (via the orchestrator-generated mcp-config.json) and the SDK server via `uv run python -m roboco.agent_sdk.server` (sdk-startup-hook.sh) — both with cwd = the agent's WORKSPACE, not /app. `uv run` then resolves a cwd-relative `.venv` (≠ the image's baked /app/.venv), ignores VIRTUAL_ENV with a warning, and RE-SYNCS the full dependency set (torch/lancedb/pyarrow/scipy, ~350MB) into a fresh venv on every spawn. A warm host uv wheel cache masks this (fast re-resolve from cached wheels — earlier runs this session opened PR #26/#28/#29 fine). On a COLD cache (first spawn after an image rebuild — exactly when deploying new fixes) the download takes minutes, the MCP servers never register, and the agent burns its whole budget with "No such tool available: mcp__roboco-*" before reaping. Observed this session: be-dev-1 never claimed; /tmp/sdk-server.log showed the live torch/lancedb download + the `VIRTUAL_ENV ... will be ignored` warning. Fix: set UV_PROJECT_ENVIRONMENT=/app/.venv in (1) every MCP server's env in the generated mcp-config.json (one place — shared mcp_env dict) and (2) the SDK startup hook. uv then reuses the pre-baked image venv instantly, regardless of cwd or cache state. Not a regression from this session's code (none of #172b/#175/#176/#177/#178 touched the launch/venv path — verified); a pre-existing launch-cwd fragility that rebuilding to deploy exposed. Test: _generate_mcp_config asserts every server env pins UV_PROJECT_ENVIRONMENT=/app/.venv. make quality green.
55 lines
2.2 KiB
Bash
55 lines
2.2 KiB
Bash
#!/bin/bash
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# SessionStart hook — starts the SDK server and prints the pre-rendered
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# task briefing into the session so Claude doesn't burn its first turns
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# on tool discovery (roboco_task_scan → roboco_task_get → read files).
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#
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# The briefing is written by the orchestrator before the container spawns
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# (_write_agent_briefing) and mounted read-only at /app/briefing.md.
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SDK_PORT="${ROBOCO_SDK_PORT:-9000}"
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AGENT_ID="${ROBOCO_AGENT_ID:-unknown}"
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LOG_FILE="/tmp/sdk-server.log"
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BRIEFING_FILE="/app/briefing.md"
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PRECOMPACT_FILE="/tmp/roboco-precompact-${AGENT_ID}.md"
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# #179: this hook runs with cwd = the agent's workspace, so a bare
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# `uv run` resolves a cwd-relative `.venv` (≠ the baked /app/.venv),
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# ignores VIRTUAL_ENV with a warning, and RE-SYNCS the full dependency
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# set (torch/lancedb/pyarrow/scipy, ~350MB) into a fresh venv. On a cold
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# uv wheel cache (first spawn after an image rebuild) that download takes
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# minutes and the SDK/MCP layer never comes up before the agent reaps.
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# Pin uv to the pre-baked image venv so it starts instantly regardless
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# of cwd. (The orchestrator sets the same var in every MCP server's env
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# in the generated mcp-config.json — keep both in sync.)
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export UV_PROJECT_ENVIRONMENT=/app/.venv
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# --- SDK bring-up ---------------------------------------------------------
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if ! curl -sf "http://localhost:${SDK_PORT}/health" >/dev/null 2>&1; then
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echo "[SDK] Starting for agent ${AGENT_ID} on port ${SDK_PORT}..."
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nohup uv run python -m roboco.agent_sdk.server > "$LOG_FILE" 2>&1 &
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SDK_PID=$!
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sleep 2
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if curl -sf "http://localhost:${SDK_PORT}/health" >/dev/null 2>&1; then
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echo "[SDK] Ready (PID: ${SDK_PID})"
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else
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echo "[SDK] Starting in background (PID: ${SDK_PID}, check ${LOG_FILE})"
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fi
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fi
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# Reset budget/terminal counters at the start of every session.
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curl -sf -m 2 -X POST "http://localhost:${SDK_PORT}/budget/reset" >/dev/null 2>&1 || true
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# --- Briefing + PreCompact recovery --------------------------------------
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# Compact restore comes FIRST so it's clear what this session is resuming.
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if [[ -s "$PRECOMPACT_FILE" ]]; then
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echo "### Resumed from compact"
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cat "$PRECOMPACT_FILE"
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echo
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fi
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if [[ -s "$BRIEFING_FILE" ]]; then
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cat "$BRIEFING_FILE"
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fi
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exit 0
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