Claude
40e0729d2c
Bash quirk: 'grep -c PATTERN FILE' exits 1 when no matches found, but ALSO prints '0' to stdout. A naive 'grep -c ... || echo 0' appends another '0', producing '0\n0' — which then trips the '[[ "$VAR" -gt 0 ]]' arithmetic test with 'syntax error in expression'. Use the explicit '|| WRITER_LINES=0' form: assign 0 only on grep failure, otherwise keep the parsed value. Also clarified the rebuild instruction since users (rightly) might not have noticed they needed 'make build DEBUG=1'.
100 lines
3.5 KiB
Bash
Executable File
100 lines
3.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Pull the post-mortem diagnostics for the most recent multiplexing run.
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# Runs from anywhere; resolves logs relative to the runner clone path
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# (../quic-interop-runner from this repo).
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set -euo pipefail
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REPO_ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
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RUNNER_LOGS="${REPO_ROOT}/../quic-interop-runner/logs"
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if [[ ! -d "$RUNNER_LOGS" ]]; then
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echo "no runner logs at $RUNNER_LOGS" >&2
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exit 1
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fi
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RUN_DIR="$(ls -1dt "$RUNNER_LOGS"/run-* 2>/dev/null | head -n 1 || true)"
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if [[ -z "$RUN_DIR" ]]; then
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echo "no run-* dirs under $RUNNER_LOGS" >&2
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exit 1
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fi
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echo "==> run dir: $RUN_DIR"
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# Layout: <run>/<server>_<client>/<testcase>/{client,server,sim}/
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CASE_DIR="$(ls -1d "$RUN_DIR"/*amethyst*/multiplexing 2>/dev/null | head -n 1 || true)"
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if [[ -z "$CASE_DIR" ]]; then
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echo "no <pair>/multiplexing dir; tree under run:" >&2
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find "$RUN_DIR" -maxdepth 3 -type d >&2
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exit 1
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fi
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echo "==> case dir: $CASE_DIR"
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echo
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echo "=============== writer-side debug traces (DEBUG=1 build only) ==============="
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# Per-drain frame/budget stats from buildApplicationPacket. The
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# smoking-gun section for "writer is iterating N active streams but
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# emits only 1 STREAM frame per packet". Empty unless the image was
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# built with `make build DEBUG=1`.
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#
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# `grep -c` exits 1 on no matches AND prints "0", so a naive
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# `grep -c ... || echo 0` doubles up. Suppress the exit code
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# instead.
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WRITER_LINES=$(grep -c '\[writer' "$CASE_DIR/output.txt" 2>/dev/null) || WRITER_LINES=0
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if [[ "$WRITER_LINES" -gt 0 ]]; then
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echo "($WRITER_LINES writer trace lines; first 30:)"
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grep '\[writer' "$CASE_DIR/output.txt" | head -n 30
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echo
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echo "stream_frames histogram (writer-reported):"
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grep -oE 'stream_frames=[0-9]+' "$CASE_DIR/output.txt" | sort | uniq -c | sort -rn
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echo
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echo "active histogram (active stream count at drain time):"
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grep -oE 'active=[0-9]+' "$CASE_DIR/output.txt" | sort | uniq -c | sort -rn
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else
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echo "(no [writer.* lines yet — to enable, REBUILD the image with DEBUG=1:"
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echo " cd quic/interop && make build DEBUG=1"
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echo " then re-run the matrix and re-run this script)"
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fi
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echo
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echo "=============== server stderr (last 50 lines) ==============="
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# Peer's CONNECTION_CLOSE reason if any; processing pace via stream
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# create/discard cadence.
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tail -n 50 "$CASE_DIR/server/stderr.log" 2>/dev/null \
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|| echo "(no server/stderr.log)"
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QLOG="$(ls -1 "$CASE_DIR"/client/qlog/*.sqlog \
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"$CASE_DIR"/client/qlog/*.qlog \
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2>/dev/null | head -n 1 || true)"
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if [[ -z "$QLOG" ]]; then
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echo
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echo "(no qlog under $CASE_DIR/client/qlog — skipping qlog sections)"
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exit 0
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fi
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echo
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echo "=============== qlog ($QLOG, $(wc -l <"$QLOG" | tr -d ' ') lines) ==============="
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echo
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echo "stream-frames-per-sent-packet histogram:"
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# Many `0` = ack-only; many `1` = the bug; many `>=4` = writer
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# coalescing as intended.
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grep '"name":"transport:packet_sent"' "$QLOG" \
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| awk -F'"frame_type":"stream"' '{print NF - 1}' \
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| sort -n | uniq -c
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echo
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echo "transport_parameters (local + remote):"
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grep '"name":"transport:parameters_set"' "$QLOG"
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echo
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echo "first 10 packet_sent (full) — burst shape after handshake:"
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grep '"name":"transport:packet_sent"' "$QLOG" | head -n 10
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echo
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echo "connection_closed events (peer CCs are the smoking gun for spec violations):"
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grep '"name":"transport:connection_closed"' "$QLOG" || echo "(none)"
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echo
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echo "packet_dropped events (last 10):"
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grep '"name":"transport:packet_dropped"' "$QLOG" | tail -n 10 \
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|| echo "(none)"
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