wehub-resource-sync
103 lines
5.3 KiB
Bash
Executable File
103 lines
5.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# A/B a codegraph retrieval/steering change: the NEW build (current HEAD) vs a
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# BASELINE build (a git ref) — BOTH with codegraph attached — on the same
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# implementation task, measuring how many Read vs codegraph calls the agent
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# makes. ISOLATES the change (unlike run-all.sh's with-vs-without). The agent
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# works on a throwaway copy of the target, so your repos are never touched.
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#
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# Reliable attach (works even when this is itself run nested inside a Claude
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# session): each arm PRE-WARMS a persistent codegraph daemon for its target so
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# claude connects to an already-bound, index-loaded daemon instantly — before
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# the agent's first turn — and SKIPS codegraph's startup re-exec via
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# CODEGRAPH_WASM_RELAUNCHED=1. Without this, on a multi-step task the agent
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# dives into Read/grep before codegraph finishes its ~2-3s startup (worse under
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# the CPU contention of a nested run) and runs with NO codegraph.
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#
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# Gotcha: claude's `system/init` snapshot can read status:"pending" / 0 tools
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# even when the server then connects fine — judge by ACTUAL codegraph usage in
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# parse-run.mjs's "by type", not the init line.
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#
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# Usage: ab-new-vs-baseline.sh <indexed-repo> "<task>" [baseline-ref]
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# <indexed-repo> a repo with a .codegraph index (copied per arm)
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# "<task>" an implementation task, e.g. "Add X to Y and wire it through"
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# [baseline-ref] git ref for the BEFORE build (default: HEAD~1)
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# Env: AGENT_EVAL_OUT (default: /tmp/ab-new-vs-baseline)
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set -uo pipefail
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TARGET="${1:?usage: ab-new-vs-baseline.sh <indexed-repo> \"<task>\" [baseline-ref]}"
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TASK="${2:?task required}"
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BASE_REF="${3:-HEAD~1}"
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ENGINE="$(cd "$(dirname "$0")/../.." && pwd)"
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BIN="$ENGINE/dist/bin/codegraph.js"
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OUT="${AGENT_EVAL_OUT:-/tmp/ab-new-vs-baseline}"
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PARSE="$ENGINE/scripts/agent-eval/parse-run.mjs"
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command -v claude >/dev/null || { echo "claude CLI not on PATH"; exit 1; }
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[ -d "$TARGET/.codegraph" ] || { echo "target not indexed: run 'codegraph init $TARGET' first"; exit 1; }
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if ! git -C "$ENGINE" diff --quiet || ! git -C "$ENGINE" diff --cached --quiet; then
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echo "engine repo has uncommitted changes — commit or stash first (this script checks files out)"; exit 1
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fi
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CHANGED=$(git -C "$ENGINE" diff --name-only "$BASE_REF" HEAD -- src 2>/dev/null)
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[ -n "$CHANGED" ] || { echo "no src/ changes between $BASE_REF and HEAD — nothing to A/B"; exit 1; }
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# On exit: kill any eval daemons + restore the engine to HEAD.
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cleanup() {
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pkill -9 -f "serve --mcp --path $OUT/" 2>/dev/null
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git -C "$ENGINE" checkout HEAD -- $CHANGED 2>/dev/null
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( cd "$ENGINE" && npm run build >/dev/null 2>&1 )
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}
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trap cleanup EXIT
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mkdir -p "$OUT"
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echo "###### engine=$ENGINE baseline=$BASE_REF"
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echo "###### changed: $(echo "$CHANGED" | tr '\n' ' ')"
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echo "###### target=$TARGET"
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echo "###### task=$TASK"
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echo
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# Two pristine copies so each arm starts clean (the agent edits its own copy).
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rm -rf "$OUT/t-new" "$OUT/t-base"
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rsync -a --exclude node_modules --exclude .git --exclude dist --exclude .codegraph "$TARGET/" "$OUT/t-new/"
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cp -R "$OUT/t-new" "$OUT/t-base"
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prewarm() { # target — spawn a persistent daemon (current $BIN) and wait for its socket
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pkill -9 -f "serve --mcp --path $1" 2>/dev/null
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CODEGRAPH_DAEMON_IDLE_TIMEOUT_MS=1800000 node "$BIN" serve --mcp --path "$1" </dev/null >/dev/null 2>&1 &
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node -e 'const fs=require("fs");let n=0;const t=setInterval(()=>{if(fs.existsSync(process.argv[1]+"/.codegraph/daemon.sock")){clearInterval(t);process.exit(0)}if(n++>150){clearInterval(t);process.exit(1)}},100)' "$1" \
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&& echo " daemon warm: $1" || echo " WARN: daemon never bound for $1 (arm may run without codegraph)"
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}
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run_arm() { # label, target-copy
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local label="$1" tgt="$2" c="$OUT/mcp-$1.json"
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# Connect to the pre-warmed daemon; skip the startup re-exec for a fast attach.
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printf '{"mcpServers":{"codegraph":{"command":"env","args":["CODEGRAPH_WASM_RELAUNCHED=1","node","%s","serve","--mcp","--path","%s"]}}}' "$BIN" "$tgt" > "$c"
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prewarm "$tgt"
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echo "############## ARM [$label] ##############"
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( cd "$tgt" && claude -p "$TASK" \
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--output-format stream-json --verbose --permission-mode bypassPermissions \
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--model "${MODEL:-sonnet}" --effort "${EFFORT:-high}" --max-budget-usd 4 --strict-mcp-config --mcp-config "$c" \
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</dev/null > "$OUT/run-$label.jsonl" 2>"$OUT/run-$label.err" )
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node "$PARSE" "$OUT/run-$label.jsonl" 2>&1 | grep -E "by type|Result" || echo " (parse failed — see $OUT/run-$label.jsonl)"
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pkill -9 -f "serve --mcp --path $tgt" 2>/dev/null
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echo
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}
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echo "== NEW build (HEAD) =="
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( cd "$ENGINE" && npm run build >/dev/null 2>&1 ) && echo " built"
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node "$BIN" init "$OUT/t-new" >/dev/null 2>&1 && echo " indexed t-new"
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run_arm new "$OUT/t-new"
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echo "== BASELINE build ($BASE_REF) =="
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# Per-file: a file ADDED since baseline has no pathspec on the ref — and a
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# single multi-file checkout with one bad pathspec checks out NOTHING, which
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# silently ran the NEW build in the baseline arm. Absent-on-baseline → remove.
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for f in $CHANGED; do
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git -C "$ENGINE" checkout "$BASE_REF" -- "$f" 2>/dev/null || rm -f "$ENGINE/$f"
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done
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( cd "$ENGINE" && npm run build >/dev/null 2>&1 ) && echo " built"
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node "$BIN" init "$OUT/t-base" >/dev/null 2>&1 && echo " indexed t-base"
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run_arm baseline "$OUT/t-base"
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echo "###### DONE. Compare the [new] vs [baseline] 'by type' counts above"
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echo "###### (especially Read vs mcp__codegraph__*). Full logs in: $OUT"
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