v1 plan: leases, limiter, chooser, fingerprint, SQLite store, accounting, admin — acceptance tests first, no reference
Every given test compiled against a panic-only interface skeleton (go vet clean); nothing was implemented. modernc.org/sqlite v1.59.0 vetted in a scratch module (WAL works); go.sum given. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Claude Fable 5.1
Executable
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#!/bin/sh
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# Smoke run (v1): two fake upstreams, one crossbar with a fresh SQLite file, real HTTP.
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# Checks routing, leases (sticky + header), failover, recovery, streaming, queueing, pin, drain,
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# usage and metrics. Prints "smoke: ok" or fails with the crossbar log.
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set -eu
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cd "$(dirname "$0")/.."
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tmp=$(mktemp -d); trap 'kill $pids 2>/dev/null; rm -rf "$tmp"' EXIT INT TERM
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pids=""
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sed "s#^db .*#db = \"$tmp/crossbar.db\"#" example.toml > "$tmp/crossbar.toml"
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bin/fakeupstream -listen 127.0.0.1:18081 -name alpha -models ornith-1.5-35b-a3b,small-9b -down-file "$tmp/alpha.down" -slow 600 >"$tmp/alpha.log" 2>&1 & pids="$pids $!"
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bin/fakeupstream -listen 127.0.0.1:18082 -name beta -models ornith-1.5-35b-a3b -down-file "$tmp/beta.down" >"$tmp/beta.log" 2>&1 & pids="$pids $!"
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bin/crossbar -config "$tmp/crossbar.toml" >"$tmp/crossbar.log" 2>&1 & pids="$pids $!"
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sleep 1.5
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fail() { echo "smoke: FAIL: $*" >&2; echo "--- crossbar.log"; cat "$tmp/crossbar.log"; exit 1; }
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base=http://127.0.0.1:17777
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conv() { printf '{"model":"ornith-1.5-35b-a3b","stream":false,"messages":[{"role":"system","content":"smoke"},{"role":"user","content":"conversation %s"}]}' "$1"; }
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hdrs() { curl -s -o /dev/null -w '%{http_code} %header{X-Crossbar-Host} %header{X-Crossbar-Lease}' "$@"; }
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# 1. a conversation gets a lease and keeps it; beta wins (2 slots × weight 2 vs 1 × 1)
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h=$(hdrs -X POST -H 'Content-Type: application/json' -d "$(conv A)" "$base/opencode-a/v1/chat/completions")
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[ "$h" = "200 beta new" ] || fail "first turn should be '200 beta new', got '$h'"
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h=$(hdrs -X POST -H 'Content-Type: application/json' -d "$(conv A)" "$base/opencode-a/v1/chat/completions")
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[ "$h" = "200 beta reused" ] || fail "second turn should reuse beta, got '$h'"
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# 2. header route
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h=$(hdrs -X POST -H 'Content-Type: application/json' -H 'X-Crossbar-Route: hermes-x' -d "$(conv B)" "$base/v1/chat/completions")
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case "$h" in "200 beta new") ;; *) fail "header route hermes-x should be '200 beta new', got '$h'";; esac
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h=$(curl -s -o /dev/null -w '%{http_code}' "$base/nope/v1/models"); [ "$h" = "404" ] || fail "unknown route 404, got $h"
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# 3. pin opencode-a to alpha: conversation A's next turn moves (an operator pin outranks the lease)
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h=$(curl -s -o /dev/null -w '%{http_code}' -X POST -H 'Content-Type: application/json' -d '{"host":"alpha","pin":true}' "$base/_crossbar/routes/opencode-a")
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[ "$h" = "200" ] || fail "pin returned $h"
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h=$(hdrs -X POST -H 'Content-Type: application/json' -d "$(conv A)" "$base/opencode-a/v1/chat/completions")
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[ "$h" = "200 alpha new" ] || fail "after pin, conversation A should be '200 alpha new', got '$h'"
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curl -s "$base/_crossbar/routes" | grep -q '"pinned":"alpha"' || fail "routes view does not show the pin: $(curl -s $base/_crossbar/routes)"
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# 4. queue: alpha has parallel 1, queue_max 1, and answers in 600 ms → of three concurrent, one is 503
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for i in 1 2 3; do (curl -s -o /dev/null -w '%{http_code}\n' -X POST -H 'Content-Type: application/json' -d "$(conv Q$i)" "$base/opencode-a/v1/chat/completions" >> "$tmp/codes") & sleep 0.1; done; wait $! 2>/dev/null || true
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sleep 2.5
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sort "$tmp/codes" | uniq -c | tr -s ' ' > "$tmp/counts"
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grep -q '2 200' "$tmp/counts" && grep -q '1 503' "$tmp/counts" || fail "queue test wanted two 200 and one 503, got: $(cat "$tmp/counts")"
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# 5. release the pin, drain alpha: new conversations go to beta, A stays on alpha
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curl -s -o /dev/null -X POST -H 'Content-Type: application/json' -d '{"release":true}' "$base/_crossbar/routes/opencode-a"
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h=$(curl -s -o /dev/null -w '%{http_code}' -X POST -H 'Content-Type: application/json' -d '{"drain":true}' "$base/_crossbar/hosts/alpha"); [ "$h" = "200" ] || fail "drain returned $h"
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h=$(hdrs -X POST -H 'Content-Type: application/json' -d "$(conv C)" "$base/opencode-a/v1/chat/completions")
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[ "$h" = "200 beta new" ] || fail "with alpha draining a new conversation should go to beta, got '$h'"
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curl -s "$base/_crossbar/hosts" | grep -q '"alpha":{[^}]*"draining":true' || fail "hosts view does not show alpha draining"
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curl -s -o /dev/null -X POST -H 'Content-Type: application/json' -d '{"drain":false}' "$base/_crossbar/hosts/alpha"
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# 6. failover + recovery
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touch "$tmp/beta.down"; sleep 2.5
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h=$(hdrs -X POST -H 'Content-Type: application/json' -d "$(conv C)" "$base/opencode-a/v1/chat/completions")
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[ "$h" = "200 alpha new" ] || fail "with beta down conversation C should move to alpha, got '$h'"
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curl -s "$base/_crossbar/hosts" | grep -q '"beta":{"healthy":false' || fail "hosts view does not show beta unhealthy"
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rm "$tmp/beta.down"; sleep 3.5
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curl -s "$base/_crossbar/hosts" | grep -q '"beta":{"healthy":true' || fail "beta did not recover after two good polls"
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# 7. streaming still arrives incrementally, and the final usage chunk is untouched
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start=$(date +%s%N)
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curl -sN -X POST -H 'Content-Type: application/json' -d '{"model":"ornith-1.5-35b-a3b","stream":true,"messages":[{"role":"user","content":"stream me"}]}' \
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"$base/opencode-a/v1/chat/completions" | while IFS= read -r line; do
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[ -n "$line" ] || continue
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now=$(date +%s%N); echo "$(( (now - start) / 1000000 )) $line"
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done > "$tmp/stream.txt"
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firstms=$(head -1 "$tmp/stream.txt" | cut -d' ' -f1); lastms=$(tail -1 "$tmp/stream.txt" | cut -d' ' -f1)
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[ -n "$firstms" ] && [ "$((lastms - firstms))" -ge 600 ] || fail "stream arrived in one burst: $(cat "$tmp/stream.txt")"
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grep -q '"usage"' "$tmp/stream.txt" && grep -q 'DONE' "$tmp/stream.txt" || fail "stream lost the usage chunk or DONE"
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# 8. accounting and metrics
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sleep 1
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u=$(curl -s "$base/_crossbar/usage?by=host")
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echo "$u" | grep -q '"key":"alpha"' && echo "$u" | grep -q '"key":"beta"' || fail "usage by host: $u"
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echo "$u" | grep -q '"cached_tokens":[1-9]' || fail "usage has no cached tokens (SSE/JSON usage not captured): $u"
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curl -s -H 'Accept: text/plain' "$base/_crossbar/usage?by=route" | grep -qi 'cache' || fail "text usage table missing"
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m=$(curl -s "$base/_crossbar/metrics")
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echo "$m" | grep -q 'crossbar_requests_total{route="opencode-a",host="alpha",status="503"} 1' || fail "metrics missing the 503: $m"
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echo "$m" | grep -q 'crossbar_host_healthy{host="beta"} 1' || fail "metrics missing host health"
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grep -q 'route=opencode-a host=' "$tmp/crossbar.log" || fail "no request log line"
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echo "smoke: ok (stream spread $((lastms - firstms)) ms)"
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