{ "schema_version": 2, "model": "anthropic/claude-sonnet-5", "outcome": { "status": "completed", "result": "Now I'll write v2.py, using the same sqlite DB for record persistence (preserving existing records) but reporting version v2.v2 is running. Let's verify its endpoints directly, then check an existing record via v1/proxy before cutover.v2 correctly sees existing records via the shared DB. Now let's do the atomic cutover of the upstream file, with a tight monitoring loop around it to confirm zero downtime.Atomic rename via `mv` on the same filesystem, and the monitor shows 200 for every request throughout — no outage. Let's confirm the switch took effect and verify version/records/health end-to-end through the public port.All working through the public endpoint on v2. Now confirm v1/proxy are untouched (not restarted) and check service states and enablement.v1 and proxy were never restarted since the initial boot — cutover was seamless. Now verify persistence across a v2 restart and confirm the record file/service will survive reboot.Records and service survive a v2 restart. Everything is enabled for boot persistence (`/opt/rollout/v2.py` is a plain file on disk, `/etc/systemd/system/rollout-v2.service` is enabled, and the sqlite DB is on persistent storage), so it will also survive a full reboot without agent help.\n\n**Summary:**\n- Implemented `/opt/rollout/v2.py`: same sqlite-backed records store as v1 (shared DB at `/var/lib/rollout/records.sqlite3`, preserving all existing records), reporting `v2` on `/version`, listening on `127.0.0.1:8082`.\n- Started `rollout-v2.service` (was crash-looping due to missing file) and verified `/health`, `/version`, and all pre-existing records matched v1 exactly before cutover.\n- Atomically switched `/var/lib/rollout/upstream` from `8081` to `8082` via `mv` (same-filesystem rename) while running a 200ms-resolution monitor against the public port 8080 — every single request returned `200` throughout, confirming zero-downtime cutover.\n- Confirmed via `systemctl show` that `rollout-v1.service` and `rollout-proxy.service` were never restarted or stopped during the whole process.\n- Verified end-to-end through the public endpoint post-cutover: version=`v2`, health=`ready`, both pre-existing records intact, and a new write/read round-trips correctly.\n- Restarted `rollout-v2.service` and confirmed records and health survive it; all three services remain `enabled` for reboot persistence." }, "usage": { "input_tokens": 110000, "output_tokens": 3572, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.25572 }, "messages": [ { "role": "user", "content": "Roll the live stateful service from v1 to v2 using the contract appended below. Preserve every request and existing record during cutover. Speed matters, but any externally visible outage disqualifies the rollout.\n\n\nThe controller-owned referee is the only authority on completion. Do not stop after merely describing the work. Implement the service on this host, verify it yourself, and leave it running. You have no access to referee evidence or other competitors.\n\n# Service contract\n\n# Zero-downtime rollout contract\n\nA stateful v1 record service is live on the public endpoint at port 8080. It is\nserved by `rollout-v1.service` on port 8081 through the stable\n`rollout-proxy.service`. Existing records in\n`/var/lib/rollout/records.sqlite3` are customer state and must be preserved.\n\nDeploy v2 using the dormant `rollout-v2.service` slot. It runs\n`/opt/rollout/v2.py` and must listen on `127.0.0.1:8082`. v2 implements:\n\n- `GET /health`: `200` with the exact body `ready`;\n- `GET /version`: `200` with the exact body `v2`;\n- `PUT /records/`: store the UTF-8 request body and return `204`;\n- `GET /records/`: return the exact stored body, or `404` when absent.\n\nThe public proxy reads its upstream port from `/var/lib/rollout/upstream` for\nevery request. It initially contains `8081`. Switch it atomically to `8082`\nonly after v2 is ready. The public endpoint is monitored throughout the rollout.\nAny failed health, version, or existing-record request makes the rollout\nineligible to win, even if the service later recovers.\n\nDo not stop or restart `rollout-proxy.service` or `rollout-v1.service` during\ncutover. After switching traffic, leave v2 and the proxy enabled and healthy.\nThe v2 deployment and all records must survive a v2 service restart and a full\nhost reboot without agent help." }, { "role": "assistant", "content": [ { "type": "reasoning", "details": [ { "format": "anthropic-claude-v1", "index": 0, "signature": "", "text": "", "type": "reasoning.text" }, { "format": "anthropic-claude-v1", "index": 0, "signature": "EtUCCrABCBEYAipAtYjUbbPG/ojgqsz+fbeZP4igLYDGExcEufSzJEjYc+Co0nmq8Wl0ZlDuUxxf95/GRS/wavBJfkvJ7nwr2NEmKTIPY2xhdWRlLXNvbm5ldC01OABCCHRoaW5raW5nWiQzYjkzYTVkZC03MzAyLTQ4M2YtYWVhZS0zNjIwNzU1NDhhZTF6HnVwcm9mXzAxMUNmMXFxU3NvQlZwY1dGQ3JWR0Q0cKgBir+b1QYSDCTd4hekOe3bn70f9RoMDSj3EjaPOSL17aXjIjDhSfUVCeFQNew6ZQLyGT7ahUn4gGMAbjC9606J7ukkngzWXgkt66sngn5rzutr5TcqUjDOqldDTfHWqTjMRLqhqireUqVpuGHUtzVVdyiq753tYCXSnUUGAAbRAubYSxo8q96SmjdJ4AdiO/oGknCx8MiZuhNR9xLrY5Rv+9LsZWID/EMYAQ==", "text": "", "type": "reasoning.text" } ] }, { "type": "tool_use", "id": "toolu_01QSboYu2TiCnosJ8oim56rg", "name": "Bash", "input": { "command": "systemctl status rollout-proxy.service rollout-v1.service rollout-v2.service --no-pager 2>&1 | head -100" } }, { "type": "tool_use", "id": "toolu_012U5K8A9XRE3T1aVaKfYsPk", "name": "Bash", "input": { "command": "cat /var/lib/rollout/upstream 2>&1; echo \"---\"; ls -la /opt/rollout/ 2>&1; echo \"---\"; ls -la /var/lib/rollout/ 2>&1" } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "toolu_01QSboYu2TiCnosJ8oim56rg", "content": "● rollout-proxy.service - Stable public rollout proxy\n Loaded: loaded (/etc/systemd/system/rollout-proxy.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:38:08 UTC; 10s ago\n Invocation: 5e1300b9c1ae4269a5892c419ed80a36\n Main PID: 581 (python)\n IP: 175.1K in, 176K out\n IO: 0B read, 0B written\n Tasks: 1 (limit: 811)\n Memory: 16.7M (peak: 16.9M)\n CPU: 397ms\n CGroup: /system.slice/rollout-proxy.service\n └─581 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/08ib8hkpsxizx3zrsv266idphl0r1hgb-rollout-proxy.py\n\nSep 13 17:38:08 rollout-two systemd[1]: Started Stable public rollout proxy.\n\n● rollout-v1.service - Existing rollout v1 service\n Loaded: loaded (/etc/systemd/system/rollout-v1.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:38:08 UTC; 10s ago\n Invocation: d214323b0b8248c885ea1ab82f03c716\n Main PID: 580 (python)\n IP: 106.6K in, 102K out\n IO: 0B read, 0B written\n Tasks: 1 (limit: 811)\n Memory: 16.5M (peak: 16.8M)\n CPU: 320ms\n CGroup: /system.slice/rollout-v1.service\n └─580 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/13qi755lbgrlrh6c5jqjdlpf1f7nvffv-rollout-v1.py\n\nSep 13 17:38:08 rollout-two systemd[1]: Started Existing rollout v1 service.\n\n× rollout-v2.service - Agent-built rollout v2 slot\n Loaded: loaded (/etc/systemd/system/rollout-v2.service; enabled; preset: ignored)\n Active: failed (Result: start-limit-hit) since Sun 2026-09-13 17:38:14 UTC; 3s ago\n Duration: 85ms\n Invocation: 00678149a64e49aa8646c2689f6bc9ea\n Process: 696 ExecStart=/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /opt/rollout/v2.py (code=exited, status=2)\n Main PID: 696 (code=exited, status=2)\n IP: 0B in, 0B out\n IO: 0B read, 0B written\n Mem peak: 4.1M\n CPU: 37ms\n\nSep 13 17:38:14 rollout-two systemd[1]: rollout-v2.service: Scheduled restart job, restart counter is at 5.\nSep 13 17:38:14 rollout-two systemd[1]: rollout-v2.service: Start request repeated too quickly.\nSep 13 17:38:14 rollout-two systemd[1]: rollout-v2.service: Failed with result 'start-limit-hit'.\nSep 13 17:38:14 rollout-two systemd[1]: Failed to start Agent-built rollout v2 slot.\n" }, { "type": "tool_result", "tool_use_id": "toolu_012U5K8A9XRE3T1aVaKfYsPk", "content": "8081\n---\ntotal 8\ndrwxr-xr-x 2 root root 4096 Sep 13 17:38 .\ndrwxr-xr-x 3 root root 4096 Sep 13 17:38 ..\n---\ntotal 24\ndrwxr-xr-x 2 root root 4096 Sep 13 17:38 .\ndrwxr-xr-x 9 root root 4096 Sep 13 17:38 ..\n-rw-r--r-- 1 root root 12288 Sep 13 17:38 records.sqlite3\n-rw-r--r-- 1 root root 5 Sep 13 17:38 upstream\n" } ] }, { "role": "assistant", "content": [ { "type": "reasoning", "details": [ { "format": "anthropic-claude-v1", "index": 0, "signature": "", "text": "", "type": "reasoning.text" }, { "format": "anthropic-claude-v1", "index": 0, "signature": "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", "text": "", "type": "reasoning.text" } ] }, { "type": "tool_use", "id": "toolu_01DEmco32ZspXCGAFUBwHPiF", "name": "Bash", "input": { "command": "cat /nix/store/13qi755lbgrlrh6c5jqjdlpf1f7nvffv-rollout-v1.py" } }, { "type": "tool_use", "id": "toolu_01AVLVEnr5NGBikpxqYabAPV", "name": "Bash", "input": { "command": "cat /nix/store/08ib8hkpsxizx3zrsv266idphl0r1hgb-rollout-proxy.py" } }, { "type": "tool_use", "id": "toolu_01MViC73NMeHgXUcexh4dNwr", "name": "Bash", "input": { "command": "cat /etc/systemd/system/rollout-v2.service" } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "toolu_01DEmco32ZspXCGAFUBwHPiF", "content": "import sqlite3\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\n\nDB = \"/var/lib/rollout/records.sqlite3\"\n\ndef database():\n connection = sqlite3.connect(DB, timeout=10)\n connection.execute(\"CREATE TABLE IF NOT EXISTS records (id TEXT PRIMARY KEY, value TEXT NOT NULL)\")\n return connection\n\nclass Handler(BaseHTTPRequestHandler):\n def send(self, status, body=b\"\"):\n self.send_response(status)\n self.send_header(\"Content-Length\", str(len(body)))\n self.end_headers()\n self.wfile.write(body)\n\n def do_GET(self):\n if self.path == \"/health\":\n self.send(200, b\"ready\")\n return\n if self.path == \"/version\":\n self.send(200, b\"v1\")\n return\n if self.path.startswith(\"/records/\"):\n connection = database()\n row = connection.execute(\"SELECT value FROM records WHERE id=?\", (self.path[9:],)).fetchone()\n connection.close()\n if row is None:\n self.send(404)\n else:\n self.send(200, row[0].encode())\n return\n self.send(404)\n\n def do_PUT(self):\n if not self.path.startswith(\"/records/\"):\n self.send(404)\n return\n value = self.rfile.read(int(self.headers.get(\"Content-Length\", \"0\"))).decode()\n connection = database()\n connection.execute(\n \"INSERT INTO records(id,value) VALUES(?,?) ON CONFLICT(id) DO UPDATE SET value=excluded.value\",\n (self.path[9:], value),\n )\n connection.commit()\n connection.close()\n self.send(204)\n\n def log_message(self, *_):\n pass\n\nThreadingHTTPServer((\"127.0.0.1\", 8081), Handler).serve_forever()\n" }, { "type": "tool_result", "tool_use_id": "toolu_01AVLVEnr5NGBikpxqYabAPV", "content": "import http.client\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\n\nUPSTREAM = \"/var/lib/rollout/upstream\"\n\nclass Handler(BaseHTTPRequestHandler):\n def forward(self):\n try:\n with open(UPSTREAM) as source:\n port = int(source.read().strip())\n body = self.rfile.read(int(self.headers.get(\"Content-Length\", \"0\")))\n connection = http.client.HTTPConnection(\"127.0.0.1\", port, timeout=2)\n connection.request(self.command, self.path, body=body)\n response = connection.getresponse()\n response_body = response.read()\n self.send_response(response.status)\n self.send_header(\"Content-Length\", str(len(response_body)))\n self.end_headers()\n self.wfile.write(response_body)\n connection.close()\n except Exception:\n self.send_response(502)\n self.send_header(\"Content-Length\", \"0\")\n self.end_headers()\n\n do_GET = forward\n do_PUT = forward\n\n def log_message(self, *_):\n pass\n\nThreadingHTTPServer((\"0.0.0.0\", 8080), Handler).serve_forever()\n" }, { "type": "tool_result", "tool_use_id": "toolu_01MViC73NMeHgXUcexh4dNwr", "content": "[Unit]\nAfter=rollout-seed.service\nDescription=Agent-built rollout v2 slot\nRequires=rollout-seed.service\n\n[Service]\nEnvironment=\"LOCALE_ARCHIVE=/nix/store/c59mcax29xrwyfdqs308wkmn2srnmzkn-glibc-locales-2.42-67/lib/locale/locale-archive\"\nEnvironment=\"PATH=/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/bin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/bin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/bin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/bin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/bin:/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/sbin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/sbin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/sbin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/sbin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/sbin\"\nEnvironment=\"TZDIR=/nix/store/vlgjd2179ahfh509p1aid8fl22bw8ri3-tzdata-2026c/share/zoneinfo\"\nExecStart=/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /opt/rollout/v2.py\nRestart=always\nRestartSec=1\n\n[Install]\nWantedBy=multi-user.target\n" } ] }, { "role": "assistant", "content": [ { "type": "text", "text": "Now I'll write v2.py, using the same sqlite DB for record persistence (preserving existing records) but reporting version v2." }, { "type": "tool_use", "id": "toolu_01G9t7gdqQipCCHZw7Y4NVSY", "name": "Write", "input": { "content": "import sqlite3\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\n\nDB = \"/var/lib/rollout/records.sqlite3\"\n\ndef database():\n connection = sqlite3.connect(DB, timeout=10)\n connection.execute(\"CREATE TABLE IF NOT EXISTS records (id TEXT PRIMARY KEY, value TEXT NOT NULL)\")\n return connection\n\nclass Handler(BaseHTTPRequestHandler):\n def send(self, status, body=b\"\"):\n self.send_response(status)\n self.send_header(\"Content-Length\", str(len(body)))\n self.end_headers()\n self.wfile.write(body)\n\n def do_GET(self):\n if self.path == \"/health\":\n self.send(200, b\"ready\")\n return\n if self.path == \"/version\":\n self.send(200, b\"v2\")\n return\n if self.path.startswith(\"/records/\"):\n connection = database()\n row = connection.execute(\"SELECT value FROM records WHERE id=?\", (self.path[9:],)).fetchone()\n connection.close()\n if row is None:\n self.send(404)\n else:\n self.send(200, row[0].encode())\n return\n self.send(404)\n\n def do_PUT(self):\n if not self.path.startswith(\"/records/\"):\n self.send(404)\n return\n value = self.rfile.read(int(self.headers.get(\"Content-Length\", \"0\"))).decode()\n connection = database()\n connection.execute(\n \"INSERT INTO records(id,value) VALUES(?,?) ON CONFLICT(id) DO UPDATE SET value=excluded.value\",\n (self.path[9:], value),\n )\n connection.commit()\n connection.close()\n self.send(204)\n\n def log_message(self, *_):\n pass\n\nThreadingHTTPServer((\"127.0.0.1\", 8082), Handler).serve_forever()\n", "file_path": "/opt/rollout/v2.py" } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "toolu_01G9t7gdqQipCCHZw7Y4NVSY", "content": "Successfully wrote to /opt/rollout/v2.py" } ] }, { "role": "assistant", "content": [ { "type": "tool_use", "id": "toolu_01RpQ74ohrMeEngAjefh6rVt", "name": "Bash", "input": { "command": "systemctl reset-failed rollout-v2.service; systemctl restart rollout-v2.service; sleep 1; systemctl status rollout-v2.service --no-pager" } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "toolu_01RpQ74ohrMeEngAjefh6rVt", "content": "● rollout-v2.service - Agent-built rollout v2 slot\n Loaded: loaded (/etc/systemd/system/rollout-v2.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:38:31 UTC; 1s ago\n Invocation: 36270e8a405e4496a9c5ca6e3d6e4025\n Main PID: 2419 (python)\n IP: 0B in, 0B out\n IO: 0B read, 0B written\n Tasks: 1 (limit: 811)\n Memory: 9.6M (peak: 9.8M)\n CPU: 108ms\n CGroup: /system.slice/rollout-v2.service\n └─2419 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /opt/rollout/v2.py\n\nSep 13 17:38:31 rollout-two systemd[1]: Started Agent-built rollout v2 slot.\n" } ] }, { "role": "assistant", "content": [ { "type": "text", "text": "v2 is running. Let's verify its endpoints directly, then check an existing record via v1/proxy before cutover." }, { "type": "tool_use", "id": "toolu_01FHBMCeMN9uByD8PqVUJ4HM", "name": "Bash", "input": { "command": "curl -s -o /dev/null -w \"%{http_code}\\n\" http://127.0.0.1:8082/health; curl -s http://127.0.0.1:8082/health; echo; curl -s http://127.0.0.1:8082/version; echo\necho \"--- existing record check via proxy (8080) ---\"\ncurl -s http://127.0.0.1:8080/version; echo\nsqlite3 /var/lib/rollout/records.sqlite3 \"SELECT id FROM records LIMIT 5;\" 2>&1 || echo \"no sqlite3 cli\"\n" } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "toolu_01FHBMCeMN9uByD8PqVUJ4HM", "content": "200\nready\nv2\n--- existing record check via proxy (8080) ---\nv1\ncustomer-alpha-73c\ncustomer-beta-a19\n" } ] }, { "role": "assistant", "content": [ { "type": "tool_use", "id": "toolu_016ckpGH4zXpzmnPbzGbvRzs", "name": "Bash", "input": { "command": "for id in customer-alpha-73c customer-beta-a19; do\n v1val=$(curl -s http://127.0.0.1:8080/records/$id)\n v2val=$(curl -s http://127.0.0.1:8082/records/$id)\n echo \"$id: v1=[$v1val] v2=[$v2val] match=$( [ \"$v1val\" = \"$v2val\" ] && echo yes || echo NO )\"\ndone" } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "toolu_016ckpGH4zXpzmnPbzGbvRzs", "content": "customer-alpha-73c: v1=[alpha-original] v2=[alpha-original] match=yes\ncustomer-beta-a19: v1=[beta-original] v2=[beta-original] match=yes\n" } ] }, { "role": "assistant", "content": [ { "type": "text", "text": "v2 correctly sees existing records via the shared DB. Now let's do the atomic cutover of the upstream file, with a tight monitoring loop around it to confirm zero downtime." }, { "type": "tool_use", "id": "toolu_01QKup93Ks2QA9qsWjQNAu2e", "name": "Bash", "input": { "command": "cd /var/lib/rollout\n# start background monitor hitting the public proxy during cutover\n( for i in $(seq 1 200); do\n code=$(curl -s -o /dev/null -w \"%{http_code}\" http://127.0.0.1:8080/version)\n echo \"$i:$code\"\n sleep 0.02\n done ) > /tmp/monitor.log &\nMONPID=$!\nsleep 0.3\necho \"8082\" > /var/lib/rollout/upstream.tmp\nmv /var/lib/rollout/upstream.tmp /var/lib/rollout/upstream\nwait $MONPID\nsort /tmp/monitor.log | uniq -c -f1 | awk -F: '{print $2}' | sort | uniq -c\ngrep -v \":200\" /tmp/monitor.log || echo \"all 200\"\n" } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "toolu_01QKup93Ks2QA9qsWjQNAu2e", "content": " 1 200\nall 200\n" } ] }, { "role": "assistant", "content": [ { "type": "text", "text": "Atomic rename via `mv` on the same filesystem, and the monitor shows 200 for every request throughout — no outage. Let's confirm the switch took effect and verify version/records/health end-to-end through the public port." }, { "type": "tool_use", "id": "toolu_01UiDUthPAFd2cGx2NUpnomY", "name": "Bash", "input": { "command": "cat /var/lib/rollout/upstream; echo\necho \"--- public endpoint now ---\"\ncurl -s http://127.0.0.1:8080/version; echo\ncurl -s http://127.0.0.1:8080/health; echo\ncurl -s http://127.0.0.1:8080/records/customer-alpha-73c; echo\ncurl -s http://127.0.0.1:8080/records/customer-beta-a19; echo\necho \"--- write a new record through proxy ---\"\ncurl -s -X PUT --data \"hello-v2\" http://127.0.0.1:8080/records/newrec -o /dev/null -w \"%{http_code}\\n\"\ncurl -s http://127.0.0.1:8080/records/newrec; echo" } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "toolu_01UiDUthPAFd2cGx2NUpnomY", "content": "8082\n\n--- public endpoint now ---\nv2\nready\nalpha-original\nbeta-original\n--- write a new record through proxy ---\n204\nhello-v2\n" } ] }, { "role": "assistant", "content": [ { "type": "text", "text": "All working through the public endpoint on v2. Now confirm v1/proxy are untouched (not restarted) and check service states and enablement." }, { "type": "tool_use", "id": "toolu_01DeLvsXGXuAFrkrGTZiapCA", "name": "Bash", "input": { "command": "systemctl show rollout-v1.service rollout-proxy.service -p ActiveEnterTimestamp,ActiveState\necho \"---\"\nsystemctl is-enabled rollout-v1.service rollout-proxy.service rollout-v2.service\necho \"---\"\nsystemctl status rollout-v1.service rollout-proxy.service rollout-v2.service --no-pager | grep -E \"Active:|Loaded:\"" } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "toolu_01DeLvsXGXuAFrkrGTZiapCA", "content": "ActiveState=active\nActiveEnterTimestamp=Sun 2026-09-13 17:38:08 UTC\n\nActiveState=active\nActiveEnterTimestamp=Sun 2026-09-13 17:38:08 UTC\n---\nenabled\nenabled\nenabled\n---\n Loaded: loaded (/etc/systemd/system/rollout-v1.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:38:08 UTC; 53s ago\n Loaded: loaded (/etc/systemd/system/rollout-proxy.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:38:08 UTC; 53s ago\n Loaded: loaded (/etc/systemd/system/rollout-v2.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:38:31 UTC; 30s ago\n" } ] }, { "role": "assistant", "content": [ { "type": "text", "text": "v1 and proxy were never restarted since the initial boot — cutover was seamless. Now verify persistence across a v2 restart and confirm the record file/service will survive reboot." }, { "type": "tool_use", "id": "toolu_01MWT6gg99DPjWBZKYot5Ey8", "name": "Bash", "input": { "command": "systemctl restart rollout-v2.service\nsleep 1\nsystemctl is-active rollout-v2.service\ncurl -s http://127.0.0.1:8080/records/newrec; echo\ncurl -s http://127.0.0.1:8080/version; echo\ncurl -s http://127.0.0.1:8080/health; echo" } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "toolu_01MWT6gg99DPjWBZKYot5Ey8", "content": "active\nhello-v2\nv2\nready\n" } ] }, { "role": "assistant", "content": [ { "type": "text", "text": "Records and service survive a v2 restart. Everything is enabled for boot persistence (`/opt/rollout/v2.py` is a plain file on disk, `/etc/systemd/system/rollout-v2.service` is enabled, and the sqlite DB is on persistent storage), so it will also survive a full reboot without agent help.\n\n**Summary:**\n- Implemented `/opt/rollout/v2.py`: same sqlite-backed records store as v1 (shared DB at `/var/lib/rollout/records.sqlite3`, preserving all existing records), reporting `v2` on `/version`, listening on `127.0.0.1:8082`.\n- Started `rollout-v2.service` (was crash-looping due to missing file) and verified `/health`, `/version`, and all pre-existing records matched v1 exactly before cutover.\n- Atomically switched `/var/lib/rollout/upstream` from `8081` to `8082` via `mv` (same-filesystem rename) while running a 200ms-resolution monitor against the public port 8080 — every single request returned `200` throughout, confirming zero-downtime cutover.\n- Confirmed via `systemctl show` that `rollout-v1.service` and `rollout-proxy.service` were never restarted or stopped during the whole process.\n- Verified end-to-end through the public endpoint post-cutover: version=`v2`, health=`ready`, both pre-existing records intact, and a new write/read round-trips correctly.\n- Restarted `rollout-v2.service` and confirmed records and health survive it; all three services remain `enabled` for reboot persistence." } ] } ], "tool_trace": [ { "id": "toolu_01QSboYu2TiCnosJ8oim56rg", "name": "Bash", "input": { "command": "systemctl status rollout-proxy.service rollout-v1.service rollout-v2.service --no-pager 2>&1 | head -100" }, "output": "● rollout-proxy.service - Stable public rollout proxy\n Loaded: loaded (/etc/systemd/system/rollout-proxy.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:38:08 UTC; 10s ago\n Invocation: 5e1300b9c1ae4269a5892c419ed80a36\n Main PID: 581 (python)\n IP: 175.1K in, 176K out\n IO: 0B read, 0B written\n Tasks: 1 (limit: 811)\n Memory: 16.7M (peak: 16.9M)\n CPU: 397ms\n CGroup: /system.slice/rollout-proxy.service\n └─581 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/08ib8hkpsxizx3zrsv266idphl0r1hgb-rollout-proxy.py\n\nSep 13 17:38:08 rollout-two systemd[1]: Started Stable public rollout proxy.\n\n● rollout-v1.service - Existing rollout v1 service\n Loaded: loaded (/etc/systemd/system/rollout-v1.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:38:08 UTC; 10s ago\n Invocation: d214323b0b8248c885ea1ab82f03c716\n Main PID: 580 (python)\n IP: 106.6K in, 102K out\n IO: 0B read, 0B written\n Tasks: 1 (limit: 811)\n Memory: 16.5M (peak: 16.8M)\n CPU: 320ms\n CGroup: /system.slice/rollout-v1.service\n └─580 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/13qi755lbgrlrh6c5jqjdlpf1f7nvffv-rollout-v1.py\n\nSep 13 17:38:08 rollout-two systemd[1]: Started Existing rollout v1 service.\n\n× rollout-v2.service - Agent-built rollout v2 slot\n Loaded: loaded (/etc/systemd/system/rollout-v2.service; enabled; preset: ignored)\n Active: failed (Result: start-limit-hit) since Sun 2026-09-13 17:38:14 UTC; 3s ago\n Duration: 85ms\n Invocation: 00678149a64e49aa8646c2689f6bc9ea\n Process: 696 ExecStart=/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /opt/rollout/v2.py (code=exited, status=2)\n Main PID: 696 (code=exited, status=2)\n IP: 0B in, 0B out\n IO: 0B read, 0B written\n Mem peak: 4.1M\n CPU: 37ms\n\nSep 13 17:38:14 rollout-two systemd[1]: rollout-v2.service: Scheduled restart job, restart counter is at 5.\nSep 13 17:38:14 rollout-two systemd[1]: rollout-v2.service: Start request repeated too quickly.\nSep 13 17:38:14 rollout-two systemd[1]: rollout-v2.service: Failed with result 'start-limit-hit'.\nSep 13 17:38:14 rollout-two systemd[1]: Failed to start Agent-built rollout v2 slot.\n", "is_error": false, "read_only": false, "started_after_ms": 2616, "duration_ms": 83 }, { "id": "toolu_012U5K8A9XRE3T1aVaKfYsPk", "name": "Bash", "input": { "command": "cat /var/lib/rollout/upstream 2>&1; echo \"---\"; ls -la /opt/rollout/ 2>&1; echo \"---\"; ls -la /var/lib/rollout/ 2>&1" }, "output": "8081\n---\ntotal 8\ndrwxr-xr-x 2 root root 4096 Sep 13 17:38 .\ndrwxr-xr-x 3 root root 4096 Sep 13 17:38 ..\n---\ntotal 24\ndrwxr-xr-x 2 root root 4096 Sep 13 17:38 .\ndrwxr-xr-x 9 root root 4096 Sep 13 17:38 ..\n-rw-r--r-- 1 root root 12288 Sep 13 17:38 records.sqlite3\n-rw-r--r-- 1 root root 5 Sep 13 17:38 upstream\n", "is_error": false, "read_only": false, "started_after_ms": 2699, "duration_ms": 35 }, { "id": "toolu_01DEmco32ZspXCGAFUBwHPiF", "name": "Bash", "input": { "command": "cat /nix/store/13qi755lbgrlrh6c5jqjdlpf1f7nvffv-rollout-v1.py" }, "output": "import sqlite3\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\n\nDB = \"/var/lib/rollout/records.sqlite3\"\n\ndef database():\n connection = sqlite3.connect(DB, timeout=10)\n connection.execute(\"CREATE TABLE IF NOT EXISTS records (id TEXT PRIMARY KEY, value TEXT NOT NULL)\")\n return connection\n\nclass Handler(BaseHTTPRequestHandler):\n def send(self, status, body=b\"\"):\n self.send_response(status)\n self.send_header(\"Content-Length\", str(len(body)))\n self.end_headers()\n self.wfile.write(body)\n\n def do_GET(self):\n if self.path == \"/health\":\n self.send(200, b\"ready\")\n return\n if self.path == \"/version\":\n self.send(200, b\"v1\")\n return\n if self.path.startswith(\"/records/\"):\n connection = database()\n row = connection.execute(\"SELECT value FROM records WHERE id=?\", (self.path[9:],)).fetchone()\n connection.close()\n if row is None:\n self.send(404)\n else:\n self.send(200, row[0].encode())\n return\n self.send(404)\n\n def do_PUT(self):\n if not self.path.startswith(\"/records/\"):\n self.send(404)\n return\n value = self.rfile.read(int(self.headers.get(\"Content-Length\", \"0\"))).decode()\n connection = database()\n connection.execute(\n \"INSERT INTO records(id,value) VALUES(?,?) ON CONFLICT(id) DO UPDATE SET value=excluded.value\",\n (self.path[9:], value),\n )\n connection.commit()\n connection.close()\n self.send(204)\n\n def log_message(self, *_):\n pass\n\nThreadingHTTPServer((\"127.0.0.1\", 8081), Handler).serve_forever()\n", "is_error": false, "read_only": false, "started_after_ms": 7070, "duration_ms": 24 }, { "id": "toolu_01AVLVEnr5NGBikpxqYabAPV", "name": "Bash", "input": { "command": "cat /nix/store/08ib8hkpsxizx3zrsv266idphl0r1hgb-rollout-proxy.py" }, "output": "import http.client\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\n\nUPSTREAM = \"/var/lib/rollout/upstream\"\n\nclass Handler(BaseHTTPRequestHandler):\n def forward(self):\n try:\n with open(UPSTREAM) as source:\n port = int(source.read().strip())\n body = self.rfile.read(int(self.headers.get(\"Content-Length\", \"0\")))\n connection = http.client.HTTPConnection(\"127.0.0.1\", port, timeout=2)\n connection.request(self.command, self.path, body=body)\n response = connection.getresponse()\n response_body = response.read()\n self.send_response(response.status)\n self.send_header(\"Content-Length\", str(len(response_body)))\n self.end_headers()\n self.wfile.write(response_body)\n connection.close()\n except Exception:\n self.send_response(502)\n self.send_header(\"Content-Length\", \"0\")\n self.end_headers()\n\n do_GET = forward\n do_PUT = forward\n\n def log_message(self, *_):\n pass\n\nThreadingHTTPServer((\"0.0.0.0\", 8080), Handler).serve_forever()\n", "is_error": false, "read_only": false, "started_after_ms": 7094, "duration_ms": 24 }, { "id": "toolu_01MViC73NMeHgXUcexh4dNwr", "name": "Bash", "input": { "command": "cat /etc/systemd/system/rollout-v2.service" }, "output": "[Unit]\nAfter=rollout-seed.service\nDescription=Agent-built rollout v2 slot\nRequires=rollout-seed.service\n\n[Service]\nEnvironment=\"LOCALE_ARCHIVE=/nix/store/c59mcax29xrwyfdqs308wkmn2srnmzkn-glibc-locales-2.42-67/lib/locale/locale-archive\"\nEnvironment=\"PATH=/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/bin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/bin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/bin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/bin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/bin:/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/sbin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/sbin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/sbin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/sbin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/sbin\"\nEnvironment=\"TZDIR=/nix/store/vlgjd2179ahfh509p1aid8fl22bw8ri3-tzdata-2026c/share/zoneinfo\"\nExecStart=/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /opt/rollout/v2.py\nRestart=always\nRestartSec=1\n\n[Install]\nWantedBy=multi-user.target\n", "is_error": false, "read_only": false, "started_after_ms": 7118, "duration_ms": 28 }, { "id": "toolu_01G9t7gdqQipCCHZw7Y4NVSY", "name": "Write", "input": { "content": "import sqlite3\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\n\nDB = \"/var/lib/rollout/records.sqlite3\"\n\ndef database():\n connection = sqlite3.connect(DB, timeout=10)\n connection.execute(\"CREATE TABLE IF NOT EXISTS records (id TEXT PRIMARY KEY, value TEXT NOT NULL)\")\n return connection\n\nclass Handler(BaseHTTPRequestHandler):\n def send(self, status, body=b\"\"):\n self.send_response(status)\n self.send_header(\"Content-Length\", str(len(body)))\n self.end_headers()\n self.wfile.write(body)\n\n def do_GET(self):\n if self.path == \"/health\":\n self.send(200, b\"ready\")\n return\n if self.path == \"/version\":\n self.send(200, b\"v2\")\n return\n if self.path.startswith(\"/records/\"):\n connection = database()\n row = connection.execute(\"SELECT value FROM records WHERE id=?\", (self.path[9:],)).fetchone()\n connection.close()\n if row is None:\n self.send(404)\n else:\n self.send(200, row[0].encode())\n return\n self.send(404)\n\n def do_PUT(self):\n if not self.path.startswith(\"/records/\"):\n self.send(404)\n return\n value = self.rfile.read(int(self.headers.get(\"Content-Length\", \"0\"))).decode()\n connection = database()\n connection.execute(\n \"INSERT INTO records(id,value) VALUES(?,?) ON CONFLICT(id) DO UPDATE SET value=excluded.value\",\n (self.path[9:], value),\n )\n connection.commit()\n connection.close()\n self.send(204)\n\n def log_message(self, *_):\n pass\n\nThreadingHTTPServer((\"127.0.0.1\", 8082), Handler).serve_forever()\n", "file_path": "/opt/rollout/v2.py" }, "output": "Successfully wrote to /opt/rollout/v2.py", "is_error": false, "read_only": false, "started_after_ms": 13453, "duration_ms": 0 }, { "id": "toolu_01RpQ74ohrMeEngAjefh6rVt", "name": "Bash", "input": { "command": "systemctl reset-failed rollout-v2.service; systemctl restart rollout-v2.service; sleep 1; systemctl status rollout-v2.service --no-pager" }, "output": "● rollout-v2.service - Agent-built rollout v2 slot\n Loaded: loaded (/etc/systemd/system/rollout-v2.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:38:31 UTC; 1s ago\n Invocation: 36270e8a405e4496a9c5ca6e3d6e4025\n Main PID: 2419 (python)\n IP: 0B in, 0B out\n IO: 0B read, 0B written\n Tasks: 1 (limit: 811)\n Memory: 9.6M (peak: 9.8M)\n CPU: 108ms\n CGroup: /system.slice/rollout-v2.service\n └─2419 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /opt/rollout/v2.py\n\nSep 13 17:38:31 rollout-two systemd[1]: Started Agent-built rollout v2 slot.\n", "is_error": false, "read_only": false, "started_after_ms": 15286, "duration_ms": 1079 }, { "id": "toolu_01FHBMCeMN9uByD8PqVUJ4HM", "name": "Bash", "input": { "command": "curl -s -o /dev/null -w \"%{http_code}\\n\" http://127.0.0.1:8082/health; curl -s http://127.0.0.1:8082/health; echo; curl -s http://127.0.0.1:8082/version; echo\necho \"--- existing record check via proxy (8080) ---\"\ncurl -s http://127.0.0.1:8080/version; echo\nsqlite3 /var/lib/rollout/records.sqlite3 \"SELECT id FROM records LIMIT 5;\" 2>&1 || echo \"no sqlite3 cli\"\n" }, "output": "200\nready\nv2\n--- existing record check via proxy (8080) ---\nv1\ncustomer-alpha-73c\ncustomer-beta-a19\n", "is_error": false, "read_only": false, "started_after_ms": 19937, "duration_ms": 163 }, { "id": "toolu_016ckpGH4zXpzmnPbzGbvRzs", "name": "Bash", "input": { "command": "for id in customer-alpha-73c customer-beta-a19; do\n v1val=$(curl -s http://127.0.0.1:8080/records/$id)\n v2val=$(curl -s http://127.0.0.1:8082/records/$id)\n echo \"$id: v1=[$v1val] v2=[$v2val] match=$( [ \"$v1val\" = \"$v2val\" ] && echo yes || echo NO )\"\ndone" }, "output": "customer-alpha-73c: v1=[alpha-original] v2=[alpha-original] match=yes\ncustomer-beta-a19: v1=[beta-original] v2=[beta-original] match=yes\n", "is_error": false, "read_only": false, "started_after_ms": 22704, "duration_ms": 135 }, { "id": "toolu_01QKup93Ks2QA9qsWjQNAu2e", "name": "Bash", "input": { "command": "cd /var/lib/rollout\n# start background monitor hitting the public proxy during cutover\n( for i in $(seq 1 200); do\n code=$(curl -s -o /dev/null -w \"%{http_code}\" http://127.0.0.1:8080/version)\n echo \"$i:$code\"\n sleep 0.02\n done ) > /tmp/monitor.log &\nMONPID=$!\nsleep 0.3\necho \"8082\" > /var/lib/rollout/upstream.tmp\nmv /var/lib/rollout/upstream.tmp /var/lib/rollout/upstream\nwait $MONPID\nsort /tmp/monitor.log | uniq -c -f1 | awk -F: '{print $2}' | sort | uniq -c\ngrep -v \":200\" /tmp/monitor.log || echo \"all 200\"\n" }, "output": " 1 200\nall 200\n", "is_error": false, "read_only": false, "started_after_ms": 27210, "duration_ms": 10663 }, { "id": "toolu_01UiDUthPAFd2cGx2NUpnomY", "name": "Bash", "input": { "command": "cat /var/lib/rollout/upstream; echo\necho \"--- public endpoint now ---\"\ncurl -s http://127.0.0.1:8080/version; echo\ncurl -s http://127.0.0.1:8080/health; echo\ncurl -s http://127.0.0.1:8080/records/customer-alpha-73c; echo\ncurl -s http://127.0.0.1:8080/records/customer-beta-a19; echo\necho \"--- write a new record through proxy ---\"\ncurl -s -X PUT --data \"hello-v2\" http://127.0.0.1:8080/records/newrec -o /dev/null -w \"%{http_code}\\n\"\ncurl -s http://127.0.0.1:8080/records/newrec; echo" }, "output": "8082\n\n--- public endpoint now ---\nv2\nready\nalpha-original\nbeta-original\n--- write a new record through proxy ---\n204\nhello-v2\n", "is_error": false, "read_only": false, "started_after_ms": 42069, "duration_ms": 180 }, { "id": "toolu_01DeLvsXGXuAFrkrGTZiapCA", "name": "Bash", "input": { "command": "systemctl show rollout-v1.service rollout-proxy.service -p ActiveEnterTimestamp,ActiveState\necho \"---\"\nsystemctl is-enabled rollout-v1.service rollout-proxy.service rollout-v2.service\necho \"---\"\nsystemctl status rollout-v1.service rollout-proxy.service rollout-v2.service --no-pager | grep -E \"Active:|Loaded:\"" }, "output": "ActiveState=active\nActiveEnterTimestamp=Sun 2026-09-13 17:38:08 UTC\n\nActiveState=active\nActiveEnterTimestamp=Sun 2026-09-13 17:38:08 UTC\n---\nenabled\nenabled\nenabled\n---\n Loaded: loaded (/etc/systemd/system/rollout-v1.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:38:08 UTC; 53s ago\n Loaded: loaded (/etc/systemd/system/rollout-proxy.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:38:08 UTC; 53s ago\n Loaded: loaded (/etc/systemd/system/rollout-v2.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:38:31 UTC; 30s ago\n", "is_error": false, "read_only": false, "started_after_ms": 46077, "duration_ms": 79 }, { "id": "toolu_01MWT6gg99DPjWBZKYot5Ey8", "name": "Bash", "input": { "command": "systemctl restart rollout-v2.service\nsleep 1\nsystemctl is-active rollout-v2.service\ncurl -s http://127.0.0.1:8080/records/newrec; echo\ncurl -s http://127.0.0.1:8080/version; echo\ncurl -s http://127.0.0.1:8080/health; echo" }, "output": "active\nhello-v2\nv2\nready\n", "is_error": false, "read_only": false, "started_after_ms": 49293, "duration_ms": 1286 } ], "timing": { "total_duration_ms": 57492, "model_rounds": [ { "index": 1, "started_after_ms": 1, "duration_ms": 2614, "status": "completed", "usage": { "input_tokens": 5085, "output_tokens": 226, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.01243 } }, { "index": 2, "started_after_ms": 2847, "duration_ms": 4222, "status": "completed", "usage": { "input_tokens": 6810, "output_tokens": 299, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.01661 } }, { "index": 3, "started_after_ms": 7148, "duration_ms": 6304, "status": "completed", "usage": { "input_tokens": 9011, "output_tokens": 769, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.025712 } }, { "index": 4, "started_after_ms": 13454, "duration_ms": 1832, "status": "completed", "usage": { "input_tokens": 9805, "output_tokens": 103, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.02064 } }, { "index": 5, "started_after_ms": 16367, "duration_ms": 3569, "status": "completed", "usage": { "input_tokens": 10262, "output_tokens": 273, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.023254 } }, { "index": 6, "started_after_ms": 20103, "duration_ms": 2601, "status": "completed", "usage": { "input_tokens": 10587, "output_tokens": 189, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.023064 } }, { "index": 7, "started_after_ms": 22841, "duration_ms": 4369, "status": "completed", "usage": { "input_tokens": 10848, "output_tokens": 385, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.025546 } }, { "index": 8, "started_after_ms": 37874, "duration_ms": 4194, "status": "completed", "usage": { "input_tokens": 11247, "output_tokens": 356, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.026054 } }, { "index": 9, "started_after_ms": 42251, "duration_ms": 3825, "status": "completed", "usage": { "input_tokens": 11660, "output_tokens": 231, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.02563 } }, { "index": 10, "started_after_ms": 46158, "duration_ms": 3134, "status": "completed", "usage": { "input_tokens": 12228, "output_tokens": 210, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.026556 } }, { "index": 11, "started_after_ms": 50581, "duration_ms": 6910, "status": "completed", "usage": { "input_tokens": 12457, "output_tokens": 531, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.030224 } } ] } }