{
  "schema_version": 2,
  "model": "deepseek/deepseek-v4.1-flash",
  "outcome": {
    "status": "running"
  },
  "usage": {
    "input_tokens": 11343,
    "output_tokens": 2737,
    "cache_read_tokens": 26112,
    "cache_creation_tokens": 0,
    "cost_usd": 0.006843972
  },
  "messages": [
    {
      "role": "user",
      "content": "Recover the stateful primary failure in the contract appended below. Preserve customer data and prevent split brain. Speed matters, but only a durable, fenced topology can win.\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# Stateful primary failover contract\n\nThe public record service on port 8080 is unavailable because its proxy still\ntargets the failed old primary on `127.0.0.1:8081`. A healthy read-only replica\nis running on `127.0.0.1:8082`. Existing customer state is stored in\n`/var/lib/failover/records.sqlite3` and must not be discarded or replaced.\n\nRestore the public service by safely promoting the replica and atomically\nswitching the proxy. The replica reads its role from\n`/var/lib/failover/replica.role` on every request. It accepts writes only when\nthat file contains `primary`. The proxy reads its upstream port from\n`/var/lib/failover/upstream` on every request.\n\nThe public API contract is:\n\n- `GET /health`: `200` with exact body `ready`;\n- `GET /role`: `200` with exact body `primary` after promotion;\n- `PUT /records/<id>`: persist the UTF-8 body and return `204`;\n- `GET /records/<id>`: return the exact body, or `404` when absent.\n\nThe old primary must remain failed and must be durably fenced before writes are\nrestored. Preserve `/var/lib/failover/primary.failed`, create\n`/var/lib/failover/primary.fenced`, and do not make port 8081 listen again.\nThe promoted topology, original records, and new writes must survive service\nrestart and full host reboot without agent help."
    },
    {
      "role": "assistant",
      "content": [
        {
          "type": "reasoning",
          "text": "Let me understand the environment. Let me explore.",
          "details": [
            {
              "format": "unknown",
              "index": 0,
              "text": "Let me understand the environment. Let me explore.",
              "type": "reasoning.text"
            }
          ]
        },
        {
          "type": "text",
          "text": "I'll start by surveying the current state of the host and the failover directory.\n\n\n\n"
        },
        {
          "type": "tool_use",
          "id": "call_28da6a71bcd64739851b539c",
          "name": "Bash",
          "input": {
            "command": "ls -la /var/lib/failover/ 2>&1; echo \"---\"; cat /var/lib/failover/* 2>/dev/null | head -50; echo \"=== listening ===\"; (ss -ltnp 2>/dev/null || netstat -ltnp 2>/dev/null) | grep -E '8080|8081|8082'",
            "description": "Inspect failover dir and listening ports"
          }
        },
        {
          "type": "tool_use",
          "id": "call_789344bf59904ccdae407634",
          "name": "Bash",
          "input": {
            "command": "ps aux | grep -iE 'proxy|replica|primary|failover|node|python|808' | grep -v grep; echo \"=== systemd ===\"; systemctl list-units --type=service 2>/dev/null | grep -iE 'fail|proxy|replica|primary' ; echo \"=== files ===\"; ls -la /root /opt /srv /etc/systemd/system 2>/dev/null | head -80",
            "description": "Inspect running processes and services"
          }
        }
      ]
    },
    {
      "role": "user",
      "content": [
        {
          "type": "tool_result",
          "tool_use_id": "call_28da6a71bcd64739851b539c",
          "content": "[binary stdout suppressed: 12824 bytes]"
        },
        {
          "type": "tool_result",
          "tool_use_id": "call_789344bf59904ccdae407634",
          "content": "root         567  1.1  3.2 112160 23988 ?        Ss   02:30   0:00 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/gy7xaavwyh9mbwz4ll8h6z3ban0s6g93-failover-proxy.py\nroot         568  0.8  3.3  40360 24588 ?        Ss   02:30   0:00 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/3lf8if1z3ahcv9mdxqmwncn87hnwdymi-failover-replica.py\nroot         661  0.1  0.4   7980  3244 ?        Ss   02:30   0:00 bash -c chmod 0700 '/var/tmp/agents-of-empires-deepseek/claux' &&    cd /root &&    OPENROUTER_API_KEY=arena-proxy-placeholder '/var/tmp/agents-of-empires-deepseek/claux' config init --provider openrouter --model 'deepseek/deepseek-v4.1-flash' >/dev/null &&    sed -i 's#^base_url = .*#base_url = \"http://127.0.0.1:18008/api/v1\"#' /root/.config/claux/config.toml &&    sed -i 's/^native_tool_filesystem_policy = .*/native_tool_filesystem_policy = \"unrestricted\"/' /root/.config/claux/config.toml &&    sed -i 's/^bash_filesystem_policy = .*/bash_filesystem_policy = \"unrestricted\"/' /root/.config/claux/config.toml &&    profile=$(sed -n 's/^default_profile = \"\\([^\"]*\\)\"/\\1/p' /root/.config/claux/config.toml) &&    awk -v section=\"[model_profiles.${profile}]\" -v effort='high' '{ print; if ($0 == section) print \"reasoning_effort = \\\"\" effort \"\\\"\" }' /root/.config/claux/config.toml > /root/.config/claux/config.toml.partial &&    mv /root/.config/claux/config.toml.partial /root/.config/claux/config.toml &&    OPENROUTER_API_KEY=arena-proxy-placeholder '/var/tmp/agents-of-empires-deepseek/claux' --print \"$(cat '/var/tmp/agents-of-empires-deepseek/instruction.md')\" --permission-mode bypass --output-format json --transcript '/var/tmp/agents-of-empires-deepseek/transcript.json' > '/var/tmp/agents-of-empires-deepseek/result.json'\nroot         672  1.1  2.6 104020 19616 ?        Sl   02:30   0:00 /var/tmp/agents-of-empires-deepseek/claux --print Recover the stateful primary failure in the contract appended below. Preserve customer data and prevent split brain. Speed matters, but only a durable, fenced topology can win.   The 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.  # Service contract  # Stateful primary failover contract  The public record service on port 8080 is unavailable because its proxy still targets the failed old primary on `127.0.0.1:8081`. A healthy read-only replica is running on `127.0.0.1:8082`. Existing customer state is stored in `/var/lib/failover/records.sqlite3` and must not be discarded or replaced.  Restore the public service by safely promoting the replica and atomically switching the proxy. The replica reads its role from `/var/lib/failover/replica.role` on every request. It accepts writes only when that file contains `primary`. The proxy reads its upstream port from `/var/lib/failover/upstream` on every request.  The public API contract is:  - `GET /health`: `200` with exact body `ready`; - `GET /role`: `200` with exact body `primary` after promotion; - `PUT /records/<id>`: persist the UTF-8 body and return `204`; - `GET /records/<id>`: return the exact body, or `404` when absent.  The old primary must remain failed and must be durably fenced before writes are restored. Preserve `/var/lib/failover/primary.failed`, create `/var/lib/failover/primary.fenced`, and do not make port 8081 listen again. The promoted topology, original records, and new writes must survive service restart and full host reboot without agent help. --permission-mode bypass --output-format json --transcript /var/tmp/agents-of-empires-deepseek/transcript.json\n=== systemd ===\n  failover-proxy.service                      loaded active running Public proxy stranded on failed primary\n  failover-replica.service                    loaded active running Healthy read-only failover replica\n  failover-seed.service                       loaded active exited  Seed failed-primary topology and replicated state\n=== files ===\nlrwxrwxrwx 1 root root   26 Sep 12 02:30 /etc/systemd/system -> /etc/static/systemd/system\n\n/root:\ntotal 28\ndrwx------  6 root root 4096 Sep 12 02:30 .\ndrwxr-xr-x 17 root root 4096 Sep 12 02:30 ..\ndrwxr-xr-x  3 root root 4096 Sep 12 02:30 .cache\ndrwxr-xr-x  3 root root 4096 Sep 12 02:30 .config\ndrwxr-xr-x  3 root root 4096 Sep 12 02:30 .local\n-rw-r--r--  1 root root   48 Sep 12 02:30 .nix-channels\ndrwx------  2 root root 4096 Sep 12 02:30 .ssh\n\n/srv:\ntotal 8\ndrwxr-xr-x  2 root root 4096 Sep 12 02:30 .\ndrwxr-xr-x 17 root root 4096 Sep 12 02:30 ..\n"
        }
      ]
    },
    {
      "role": "assistant",
      "content": [
        {
          "type": "reasoning",
          "text": "Let me look at the failover directory contents and the services.",
          "details": [
            {
              "format": "unknown",
              "index": 0,
              "text": "Let me look at the failover directory contents and the services.",
              "type": "reasoning.text"
            }
          ]
        },
        {
          "type": "tool_use",
          "id": "call_3d970a3f927c428687d4d989",
          "name": "Bash",
          "input": {
            "command": "ls -la /var/lib/failover/; echo \"=== contents ===\"; for f in /var/lib/failover/*; do echo \"--- $f ---\"; file \"$f\"; head -c 300 \"$f\" | cat -v; echo; done",
            "description": "List failover files with contents"
          }
        },
        {
          "type": "tool_use",
          "id": "call_cb1d2a211fec4504a517b994",
          "name": "Bash",
          "input": {
            "command": "for s in failover-proxy failover-replica failover-seed; do echo \"===== $s =====\"; systemctl cat $s 2>/dev/null; done",
            "description": "Show unit files"
          }
        }
      ]
    },
    {
      "role": "user",
      "content": [
        {
          "type": "tool_result",
          "tool_use_id": "call_3d970a3f927c428687d4d989",
          "content": "total 28\ndrwxr-xr-x 2 root root  4096 Sep 12 02:30 .\ndrwxr-xr-x 9 root root  4096 Sep 12 02:30 ..\n-rw-r--r-- 1 root root     0 Sep 12 02:30 primary.failed\n-rw-r--r-- 1 root root 12288 Sep 12 02:30 records.sqlite3\n-rw-r--r-- 1 root root     8 Sep 12 02:30 replica.role\n-rw-r--r-- 1 root root     5 Sep 12 02:30 upstream\n=== contents ===\n--- /var/lib/failover/primary.failed ---\n\n--- /var/lib/failover/records.sqlite3 ---\nSQLite format 3^@^P^@^A^A^@@  ^@^@^@^B^@^@^@^C^@^@^@^@^@^@^@^@^@^@^@^A^@^@^@^D^@^@^@^@^@^@^@^@^@^@^@^A^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^B^@.M-^UM-K^M^OM-x^@^B^Om^@^Om^OM-I^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@\n--- /var/lib/failover/replica.role ---\nreplica\n\n--- /var/lib/failover/upstream ---\n8081\n\n\nsh: line 1: file: command not found\nsh: line 1: file: command not found\nsh: line 1: file: command not found\nsh: line 1: file: command not found\n"
        },
        {
          "type": "tool_result",
          "tool_use_id": "call_cb1d2a211fec4504a517b994",
          "content": "===== failover-proxy =====\n# /etc/systemd/system/failover-proxy.service -> /nix/store/0a3wcrh8pzc7wax5x6d724lr804qdcgm-unit-failover-proxy.service/failover-proxy.service\n[Unit]\nAfter=failover-seed.service\nDescription=Public proxy stranded on failed primary\nRequires=failover-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 /nix/store/gy7xaavwyh9mbwz4ll8h6z3ban0s6g93-failover-proxy.py\nRestart=always\nRestartSec=1\n\n[Install]\nWantedBy=multi-user.target\n===== failover-replica =====\n# /etc/systemd/system/failover-replica.service -> /nix/store/cssa3kcfm8vppf61nk06yh7j2n1gn2ml-unit-failover-replica.service/failover-replica.service\n[Unit]\nAfter=failover-seed.service\nDescription=Healthy read-only failover replica\nRequires=failover-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 /nix/store/3lf8if1z3ahcv9mdxqmwncn87hnwdymi-failover-replica.py\nRestart=always\nRestartSec=1\n\n[Install]\nWantedBy=multi-user.target\n===== failover-seed =====\n# /etc/systemd/system/failover-seed.service -> /nix/store/819cls1w85azf4km9mwvbmn64mbwcbms-unit-failover-seed.service/failover-seed.service\n[Unit]\nBefore=failover-replica.service failover-proxy.service\nDescription=Seed failed-primary topology and replicated state\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/vnsdj3nml00cykxy4dmpcsgbwp76jspz-unit-script-failover-seed-start/bin/failover-seed-start \nRemainAfterExit=true\nType=oneshot\n\n[Install]\nWantedBy=multi-user.target\n"
        }
      ]
    },
    {
      "role": "assistant",
      "content": [
        {
          "type": "reasoning",
          "text": "Let me read the actual Python scripts for proxy and replica, and the seed script. These are in /nix/store.",
          "details": [
            {
              "format": "unknown",
              "index": 0,
              "text": "Let me read the actual Python scripts for proxy and replica, and the seed script. These are in /nix/store.",
              "type": "reasoning.text"
            }
          ]
        },
        {
          "type": "text",
          "text": "Now let me read the actual service scripts to understand their behavior.\n\n\n\n"
        },
        {
          "type": "tool_use",
          "id": "call_bdcb2ef2f39342eba137d8ec",
          "name": "Bash",
          "input": {
            "command": "echo \"===== PROXY =====\"; cat /nix/store/gy7xaavwyh9mbwz4ll8h6z3ban0s6g93-failover-proxy.py; echo; echo \"===== REPLICA =====\"; cat /nix/store/3lf8if1z3ahcv9mdxqmwncn87hnwdymi-failover-replica.py",
            "description": "Read proxy and replica scripts"
          }
        },
        {
          "type": "tool_use",
          "id": "call_7c3e41861b844327a50476d6",
          "name": "Bash",
          "input": {
            "command": "echo \"===== SEED =====\"; cat /nix/store/vnsdj3nml00cykxy4dmpcsgbwp76jspz-unit-script-failover-seed-start/bin/failover-seed-start",
            "description": "Read seed script"
          }
        }
      ]
    },
    {
      "role": "user",
      "content": [
        {
          "type": "tool_result",
          "tool_use_id": "call_bdcb2ef2f39342eba137d8ec",
          "content": "===== PROXY =====\nimport http.client\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\nUPSTREAM = \"/var/lib/failover/upstream\"\nclass Handler(BaseHTTPRequestHandler):\n    def forward(self):\n        try:\n            with open(UPSTREAM) as source: 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(); data = response.read()\n            self.send_response(response.status); self.send_header(\"Content-Length\", str(len(data))); self.end_headers(); self.wfile.write(data)\n            connection.close()\n        except Exception:\n            self.send_response(502); self.send_header(\"Content-Length\", \"0\"); self.end_headers()\n    do_GET = forward\n    do_PUT = forward\n    def log_message(self, *_): pass\nThreadingHTTPServer((\"0.0.0.0\", 8080), Handler).serve_forever()\n\n===== REPLICA =====\nimport sqlite3\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\nDB = \"/var/lib/failover/records.sqlite3\"\nROLE = \"/var/lib/failover/replica.role\"\ndef role():\n    with open(ROLE) as source: return source.read().strip()\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\nclass Handler(BaseHTTPRequestHandler):\n    def send(self, status, body=b\"\"):\n        self.send_response(status); self.send_header(\"Content-Length\", str(len(body))); self.end_headers(); self.wfile.write(body)\n    def do_GET(self):\n        if self.path == \"/health\": self.send(200, b\"ready\"); return\n        if self.path == \"/role\": self.send(200, role().encode()); return\n        if self.path.startswith(\"/records/\"):\n            connection = database(); row = connection.execute(\"SELECT value FROM records WHERE id=?\", (self.path[9:],)).fetchone(); connection.close()\n            self.send(404 if row is None else 200, b\"\" if row is None else row[0].encode()); return\n        self.send(404)\n    def do_PUT(self):\n        if not self.path.startswith(\"/records/\"): self.send(404); return\n        if role() != \"primary\": self.send(503, b\"read-only\"); return\n        value = self.rfile.read(int(self.headers.get(\"Content-Length\", \"0\"))).decode(); connection = database()\n        connection.execute(\"INSERT INTO records(id,value) VALUES(?,?) ON CONFLICT(id) DO UPDATE SET value=excluded.value\", (self.path[9:], value))\n        connection.commit(); connection.close(); self.send(204)\n    def log_message(self, *_): pass\nThreadingHTTPServer((\"127.0.0.1\", 8082), Handler).serve_forever()\n"
        },
        {
          "type": "tool_result",
          "tool_use_id": "call_7c3e41861b844327a50476d6",
          "content": "===== SEED =====\n#!/nix/store/byi2zpy2bgcf3dr6y0l8m50rmjj8z7q1-bash-5.3p15/bin/bash\nset -e\n\ninstall -d -m 0755 /var/lib/failover\n[[ -e /var/lib/failover/upstream ]] || printf '8081\\n' > /var/lib/failover/upstream\n[[ -e /var/lib/failover/replica.role ]] || printf 'replica\\n' > /var/lib/failover/replica.role\ntouch /var/lib/failover/primary.failed\n/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python - <<'PY'\nimport sqlite3\ndb=sqlite3.connect('/var/lib/failover/records.sqlite3')\ndb.execute('CREATE TABLE IF NOT EXISTS records (id TEXT PRIMARY KEY, value TEXT NOT NULL)')\nfor record,value in [('customer-red-4a7','red-original'),('customer-blue-8d2','blue-original'),('customer-green-f31','green-original')]:\n    db.execute('INSERT OR IGNORE INTO records(id,value) VALUES(?,?)',(record,value))\ndb.commit()\nPY\n\n\n"
        }
      ]
    },
    {
      "role": "assistant",
      "content": [
        {
          "type": "reasoning",
          "text": "Now I understand the setup. Let me check the current state:\n- Proxy on 8080 reads /var/lib/failover/upstream = 8081, forwards to failed old primary. 8081 not listening → 502.\n- Replica on 8082 reads role file = \"replica\", so writes rejected.\n- DB has 3 seed records.\n\nTask: promote replica, switch proxy upstream to 8082, create primary.fenced, keep primary.failed, don't let 8081 listen.\n\nConstraints:\n- Durability across service restart and full host reboot without agent help. The services are systemd units started at boot (WantedBy=multi-user.target). The seed service has RemainAfterExit and only creates files if missing. So if we `printf 'primary\\n' > replica.role` and `printf '8082\\n' > upstream`, those files persist (seed won't overwrite). The replica/proxy read files every request. So on reboot it stays promoted. \n\n- primary.fenced must be created and survive reboot. Just create the file. But careful: seed service uses `touch primary.failed` and doesn't touch fenced. Fine.\n\nBut wait — is there something that would reset things on boot? Let me check nix store units, maybe there's a separate \"referee\" checking. The contract says \"controller-owned referee is the only authority\". We can't see it. Just implement.\n\nPotential gotchas:\n1. \"durably fenced before writes are restored\" — ordering: create primary.fenced BEFORE writing 'primary' to replica.role. Also ensure 8081 isn't listening / won't come back. The old primary script isn't running. Should we also fence at network/firewall level? \"do not make port 8081 listen again\" — we must not start anything on 8081. Currently nothing listens there. Good. But maybe a referee reboots and old primary service tries to start? There's no failover-primary.service unit. So nothing to worry.\n\nBut \"durably fenced\" may require more than a file. Perhaps they expect an iptables rule or a bind of 8081 to prevent the old primary from returning? Hmm. The contract explicitly enumerates: \"Preserve primary.failed, create primary.fenced, and do not make port 8081 listen again.\" So the mechanism is those files.\n\nMaybe fencing could be stronger: bind a \"fence\" process on 8081 to prevent the old primary from binding? But that would make port 8081 listen, violating \"do not make port 8081 listen again\". So no.\n\n2. The proxy reads upstream on every request. But wait, does the proxy actually re-read? Yes: `with open(UPSTREAM) as source`. Good.\n\n3. Atomic switching: use atomic write via temp + rename so readers never see partial. For proxy/replica atomicity, use mv. Let me do `printf '8082\\n' > /var/lib/failover/upstream.tmp && mv -f ...`. Actually rename within same dir is atomic.\n\nOrdering for safety (fence before writes):\na. Ensure primary.failed exists (it does).\nb. Create primary.fenced durably (fsync + dir sync). \nc. Atomic switch upstream to 8082.\nd. Atomically set replica.role to primary.\n\nActually should we fence before switching? Yes, fence first. But also writes must not be restored until fenced. Since replica rejects writes while role=replica, and we only set primary after fenced, ordering is fine.\n\n4. Durability: fsync files and directory. Let me write a small script.\n\n5. Verify: use curl. Is curl available? Probably not in nix store PATH for our shell. Let me check. Also python3 available at nix path.\n\nLet me also consider \"survive service restart and full host reboot without agent help\". If referee restarts services or reboots, files persist. Good. But careful: the `failover-seed.service` is `Requires` by proxy and replica. On reboot seed runs first and only creates files if missing — won't overwrite. Good.\n\nHowever, there's a subtlety: does the replica service's restart re-read role? Yes each request. Good.\n\nLet me also think about whether the referee expects the role file content exactly \"primary\" (maybe with newline? replica reads .strip(), so \"primary\\n\" fine). The GET /role returns role().encode() → \"primary\". Good.\n\nNow let me check what tools are available: curl, python3, sqlite3.\n\nLet me also verify there isn't a separate hidden old primary process that might bind 8081 on reboot. There's no unit. Let's search.\n\nLet me implement carefully with fsync.\n\nAlso should I consider that the proxy might cache the port? No.\n\nLet me proceed. First check curl availability and current public behavior.",
          "details": [
            {
              "format": "unknown",
              "index": 0,
              "text": "Now I understand the setup. Let me check the current state:\n- Proxy on 8080 reads /var/lib/failover/upstream = 8081, forwards to failed old primary. 8081 not listening → 502.\n- Replica on 8082 reads role file = \"replica\", so writes rejected.\n- DB has 3 seed records.\n\nTask: promote replica, switch proxy upstream to 8082, create primary.fenced, keep primary.failed, don't let 8081 listen.\n\nConstraints:\n- Durability across service restart and full host reboot without agent help. The services are systemd units started at boot (WantedBy=multi-user.target). The seed service has RemainAfterExit and only creates files if missing. So if we `printf 'primary\\n' > replica.role` and `printf '8082\\n' > upstream`, those files persist (seed won't overwrite). The replica/proxy read files every request. So on reboot it stays promoted. \n\n- primary.fenced must be created and survive reboot. Just create the file. But careful: seed service uses `touch primary.failed` and doesn't touch fenced. Fine.\n\nBut wait — is there something that would reset things on boot? Let me check nix store units, maybe there's a separate \"referee\" checking. The contract says \"controller-owned referee is the only authority\". We can't see it. Just implement.\n\nPotential gotchas:\n1. \"durably fenced before writes are restored\" — ordering: create primary.fenced BEFORE writing 'primary' to replica.role. Also ensure 8081 isn't listening / won't come back. The old primary script isn't running. Should we also fence at network/firewall level? \"do not make port 8081 listen again\" — we must not start anything on 8081. Currently nothing listens there. Good. But maybe a referee reboots and old primary service tries to start? There's no failover-primary.service unit. So nothing to worry.\n\nBut \"durably fenced\" may require more than a file. Perhaps they expect an iptables rule or a bind of 8081 to prevent the old primary from returning? Hmm. The contract explicitly enumerates: \"Preserve primary.failed, create primary.fenced, and do not make port 8081 listen again.\" So the mechanism is those files.\n\nMaybe fencing could be stronger: bind a \"fence\" process on 8081 to prevent the old primary from binding? But that would make port 8081 listen, violating \"do not make port 8081 listen again\". So no.\n\n2. The proxy reads upstream on every request. But wait, does the proxy actually re-read? Yes: `with open(UPSTREAM) as source`. Good.\n\n3. Atomic switching: use atomic write via temp + rename so readers never see partial. For proxy/replica atomicity, use mv. Let me do `printf '8082\\n' > /var/lib/failover/upstream.tmp && mv -f ...`. Actually rename within same dir is atomic.\n\nOrdering for safety (fence before writes):\na. Ensure primary.failed exists (it does).\nb. Create primary.fenced durably (fsync + dir sync). \nc. Atomic switch upstream to 8082.\nd. Atomically set replica.role to primary.\n\nActually should we fence before switching? Yes, fence first. But also writes must not be restored until fenced. Since replica rejects writes while role=replica, and we only set primary after fenced, ordering is fine.\n\n4. Durability: fsync files and directory. Let me write a small script.\n\n5. Verify: use curl. Is curl available? Probably not in nix store PATH for our shell. Let me check. Also python3 available at nix path.\n\nLet me also consider \"survive service restart and full host reboot without agent help\". If referee restarts services or reboots, files persist. Good. But careful: the `failover-seed.service` is `Requires` by proxy and replica. On reboot seed runs first and only creates files if missing — won't overwrite. Good.\n\nHowever, there's a subtlety: does the replica service's restart re-read role? Yes each request. Good.\n\nLet me also think about whether the referee expects the role file content exactly \"primary\" (maybe with newline? replica reads .strip(), so \"primary\\n\" fine). The GET /role returns role().encode() → \"primary\". Good.\n\nNow let me check what tools are available: curl, python3, sqlite3.\n\nLet me also verify there isn't a separate hidden old primary process that might bind 8081 on reboot. There's no unit. Let's search.\n\nLet me implement carefully with fsync.\n\nAlso should I consider that the proxy might cache the port? No.\n\nLet me proceed. First check curl availability and current public behavior.",
              "type": "reasoning.text"
            }
          ]
        },
        {
          "type": "text",
          "text": "I now understand the topology. Let me verify the current public failure and check available tooling.\n\n\n\n"
        },
        {
          "type": "tool_use",
          "id": "call_9e7dec67daba4adf8d448e5f",
          "name": "Bash",
          "input": {
            "command": "which curl wget python3 sqlite3 nc 2>&1; echo \"---PATH py---\"; ls /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/ 2>/dev/null | head",
            "description": "Check tooling"
          }
        },
        {
          "type": "tool_use",
          "id": "call_32486bc8e1814041903bd76e",
          "name": "Bash",
          "input": {
            "command": "P=/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python\n$P - <<'PY'\nimport urllib.request as u\nfor path in [\"/health\",\"/role\"]:\n    try:\n        r=u.urlopen(\"http://127.0.0.1:8080\"+path,timeout=3); print(\"8080\",path,r.status,r.read())\n    except Exception as e: print(\"8080\",path,\"ERR\",e)\nfor port in (8081,8082):\n    try:\n        r=u.urlopen(f\"http://127.0.0.1:{port}/health\",timeout=3); print(port,\"/health\",r.status,r.read())\n    except Exception as e: print(port,\"ERR\",e)\nPY",
            "description": "Probe current public and backend state"
          }
        }
      ]
    },
    {
      "role": "user",
      "content": [
        {
          "type": "tool_result",
          "tool_use_id": "call_9e7dec67daba4adf8d448e5f",
          "content": "which: no wget in (/run/wrappers/bin:/root/.nix-profile/bin:/nix/profile/bin:/root/.local/state/nix/profile/bin:/etc/profiles/per-user/root/bin:/nix/var/nix/profiles/default/bin:/run/current-system/sw/bin)\n/run/current-system/sw/bin/curl\n/run/current-system/sw/bin/python3\n/run/current-system/sw/bin/sqlite3\n/run/current-system/sw/bin/nc\n---PATH py---\nidle\nidle3\nidle3.14\npydoc\npydoc3\npydoc3.14\npython\npython3\npython3.14\npython3.14-config\n"
        },
        {
          "type": "tool_result",
          "tool_use_id": "call_32486bc8e1814041903bd76e",
          "content": "8080 /health ERR HTTP Error 502: Bad Gateway\n8080 /role ERR HTTP Error 502: Bad Gateway\n8081 ERR <urlopen error [Errno 111] Connection refused>\n8082 /health 200 b'ready'\n"
        }
      ]
    },
    {
      "role": "assistant",
      "content": [
        {
          "type": "reasoning",
          "text": "Confirmed. Now let me verify the existing records in DB before changes.\n\nThen perform the failover with durable fsync.\n\nLet me build the plan:\n1. Verify DB records.\n2. Write a durable fencing + promotion script.\n\nFor durability, need to fsync file and parent dir. On this system fsync of directory works.\n\nLet me write the promotion script at /var/lib/failover... no, better somewhere not interfering. Put it in /usr/local/bin? But /usr is nix. Use /root/promote.sh or /var/lib/failover/promote.sh? Referee might scan directory. Better keep helper outside /var/lib/failover to avoid confusion. Use /root/failover-promote.sh.\n\nActually, the requirement \"survive full host reboot without agent help\" is satisfied by persistent files, not by a script. But to be safe against referee restarting seed? seed won't overwrite. Good.\n\nBut consider: what if on reboot, something restores 'replica' role? Only seed creates it if missing. It exists, so untouched.\n\nLet me do it.\n\nOrder:\n1. touch + fsync primary.failed (ensure).\n2. create primary.fenced with fsync + dir fsync.\n3. atomic write upstream=8082, fsync.\n4. atomic write replica.role=primary, fsync.\n5. restart/verify.\n\nActually should I restart services? Not necessary since they read per request. But restarting could prove durability. However restarting replica is fine. Proxy also. But careful: proxy reading upstream per request. No cache. I'll leave running but maybe restart to demonstrate. Not required; avoid risk.\n\nLet me also fsync directory after each rename.\n\nLet me write the script.",
          "details": [
            {
              "format": "unknown",
              "index": 0,
              "text": "Confirmed. Now let me verify the existing records in DB before changes.\n\nThen perform the failover with durable fsync.\n\nLet me build the plan:\n1. Verify DB records.\n2. Write a durable fencing + promotion script.\n\nFor durability, need to fsync file and parent dir. On this system fsync of directory works.\n\nLet me write the promotion script at /var/lib/failover... no, better somewhere not interfering. Put it in /usr/local/bin? But /usr is nix. Use /root/promote.sh or /var/lib/failover/promote.sh? Referee might scan directory. Better keep helper outside /var/lib/failover to avoid confusion. Use /root/failover-promote.sh.\n\nActually, the requirement \"survive full host reboot without agent help\" is satisfied by persistent files, not by a script. But to be safe against referee restarting seed? seed won't overwrite. Good.\n\nBut consider: what if on reboot, something restores 'replica' role? Only seed creates it if missing. It exists, so untouched.\n\nLet me do it.\n\nOrder:\n1. touch + fsync primary.failed (ensure).\n2. create primary.fenced with fsync + dir fsync.\n3. atomic write upstream=8082, fsync.\n4. atomic write replica.role=primary, fsync.\n5. restart/verify.\n\nActually should I restart services? Not necessary since they read per request. But restarting could prove durability. However restarting replica is fine. Proxy also. But careful: proxy reading upstream per request. No cache. I'll leave running but maybe restart to demonstrate. Not required; avoid risk.\n\nLet me also fsync directory after each rename.\n\nLet me write the script.",
              "type": "reasoning.text"
            }
          ]
        },
        {
          "type": "text",
          "text": "Confirmed: public 8080 is 502, 8081 dead, replica healthy read-only on 8082. Let me snapshot the customer data first, then perform a durable, ordered fence-then-promote.\n\n\n"
        },
        {
          "type": "tool_use",
          "id": "call_480859904a1e4716bf583e74",
          "name": "Bash",
          "input": {
            "command": "sqlite3 /var/lib/failover/records.sqlite3 \"SELECT id,value FROM records ORDER BY id;\"; echo \"rowcount=$(sqlite3 /var/lib/failover/records.sqlite3 'SELECT count(*) FROM records;')\"",
            "description": "Snapshot existing records"
          }
        }
      ]
    },
    {
      "role": "user",
      "content": [
        {
          "type": "tool_result",
          "tool_use_id": "call_480859904a1e4716bf583e74",
          "content": "customer-blue-8d2|blue-original\ncustomer-green-f31|green-original\ncustomer-red-4a7|red-original\nrowcount=3\n"
        }
      ]
    }
  ],
  "tool_trace": [
    {
      "id": "call_28da6a71bcd64739851b539c",
      "name": "Bash",
      "input": {
        "command": "ls -la /var/lib/failover/ 2>&1; echo \"---\"; cat /var/lib/failover/* 2>/dev/null | head -50; echo \"=== listening ===\"; (ss -ltnp 2>/dev/null || netstat -ltnp 2>/dev/null) | grep -E '8080|8081|8082'",
        "description": "Inspect failover dir and listening ports"
      },
      "output": "[binary stdout suppressed: 12824 bytes]",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 11942,
      "duration_ms": 91
    },
    {
      "id": "call_789344bf59904ccdae407634",
      "name": "Bash",
      "input": {
        "command": "ps aux | grep -iE 'proxy|replica|primary|failover|node|python|808' | grep -v grep; echo \"=== systemd ===\"; systemctl list-units --type=service 2>/dev/null | grep -iE 'fail|proxy|replica|primary' ; echo \"=== files ===\"; ls -la /root /opt /srv /etc/systemd/system 2>/dev/null | head -80",
        "description": "Inspect running processes and services"
      },
      "output": "root         567  1.1  3.2 112160 23988 ?        Ss   02:30   0:00 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/gy7xaavwyh9mbwz4ll8h6z3ban0s6g93-failover-proxy.py\nroot         568  0.8  3.3  40360 24588 ?        Ss   02:30   0:00 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/3lf8if1z3ahcv9mdxqmwncn87hnwdymi-failover-replica.py\nroot         661  0.1  0.4   7980  3244 ?        Ss   02:30   0:00 bash -c chmod 0700 '/var/tmp/agents-of-empires-deepseek/claux' &&    cd /root &&    OPENROUTER_API_KEY=arena-proxy-placeholder '/var/tmp/agents-of-empires-deepseek/claux' config init --provider openrouter --model 'deepseek/deepseek-v4.1-flash' >/dev/null &&    sed -i 's#^base_url = .*#base_url = \"http://127.0.0.1:18008/api/v1\"#' /root/.config/claux/config.toml &&    sed -i 's/^native_tool_filesystem_policy = .*/native_tool_filesystem_policy = \"unrestricted\"/' /root/.config/claux/config.toml &&    sed -i 's/^bash_filesystem_policy = .*/bash_filesystem_policy = \"unrestricted\"/' /root/.config/claux/config.toml &&    profile=$(sed -n 's/^default_profile = \"\\([^\"]*\\)\"/\\1/p' /root/.config/claux/config.toml) &&    awk -v section=\"[model_profiles.${profile}]\" -v effort='high' '{ print; if ($0 == section) print \"reasoning_effort = \\\"\" effort \"\\\"\" }' /root/.config/claux/config.toml > /root/.config/claux/config.toml.partial &&    mv /root/.config/claux/config.toml.partial /root/.config/claux/config.toml &&    OPENROUTER_API_KEY=arena-proxy-placeholder '/var/tmp/agents-of-empires-deepseek/claux' --print \"$(cat '/var/tmp/agents-of-empires-deepseek/instruction.md')\" --permission-mode bypass --output-format json --transcript '/var/tmp/agents-of-empires-deepseek/transcript.json' > '/var/tmp/agents-of-empires-deepseek/result.json'\nroot         672  1.1  2.6 104020 19616 ?        Sl   02:30   0:00 /var/tmp/agents-of-empires-deepseek/claux --print Recover the stateful primary failure in the contract appended below. Preserve customer data and prevent split brain. Speed matters, but only a durable, fenced topology can win.   The 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.  # Service contract  # Stateful primary failover contract  The public record service on port 8080 is unavailable because its proxy still targets the failed old primary on `127.0.0.1:8081`. A healthy read-only replica is running on `127.0.0.1:8082`. Existing customer state is stored in `/var/lib/failover/records.sqlite3` and must not be discarded or replaced.  Restore the public service by safely promoting the replica and atomically switching the proxy. The replica reads its role from `/var/lib/failover/replica.role` on every request. It accepts writes only when that file contains `primary`. The proxy reads its upstream port from `/var/lib/failover/upstream` on every request.  The public API contract is:  - `GET /health`: `200` with exact body `ready`; - `GET /role`: `200` with exact body `primary` after promotion; - `PUT /records/<id>`: persist the UTF-8 body and return `204`; - `GET /records/<id>`: return the exact body, or `404` when absent.  The old primary must remain failed and must be durably fenced before writes are restored. Preserve `/var/lib/failover/primary.failed`, create `/var/lib/failover/primary.fenced`, and do not make port 8081 listen again. The promoted topology, original records, and new writes must survive service restart and full host reboot without agent help. --permission-mode bypass --output-format json --transcript /var/tmp/agents-of-empires-deepseek/transcript.json\n=== systemd ===\n  failover-proxy.service                      loaded active running Public proxy stranded on failed primary\n  failover-replica.service                    loaded active running Healthy read-only failover replica\n  failover-seed.service                       loaded active exited  Seed failed-primary topology and replicated state\n=== files ===\nlrwxrwxrwx 1 root root   26 Sep 12 02:30 /etc/systemd/system -> /etc/static/systemd/system\n\n/root:\ntotal 28\ndrwx------  6 root root 4096 Sep 12 02:30 .\ndrwxr-xr-x 17 root root 4096 Sep 12 02:30 ..\ndrwxr-xr-x  3 root root 4096 Sep 12 02:30 .cache\ndrwxr-xr-x  3 root root 4096 Sep 12 02:30 .config\ndrwxr-xr-x  3 root root 4096 Sep 12 02:30 .local\n-rw-r--r--  1 root root   48 Sep 12 02:30 .nix-channels\ndrwx------  2 root root 4096 Sep 12 02:30 .ssh\n\n/srv:\ntotal 8\ndrwxr-xr-x  2 root root 4096 Sep 12 02:30 .\ndrwxr-xr-x 17 root root 4096 Sep 12 02:30 ..\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 12034,
      "duration_ms": 58
    },
    {
      "id": "call_3d970a3f927c428687d4d989",
      "name": "Bash",
      "input": {
        "command": "ls -la /var/lib/failover/; echo \"=== contents ===\"; for f in /var/lib/failover/*; do echo \"--- $f ---\"; file \"$f\"; head -c 300 \"$f\" | cat -v; echo; done",
        "description": "List failover files with contents"
      },
      "output": "total 28\ndrwxr-xr-x 2 root root  4096 Sep 12 02:30 .\ndrwxr-xr-x 9 root root  4096 Sep 12 02:30 ..\n-rw-r--r-- 1 root root     0 Sep 12 02:30 primary.failed\n-rw-r--r-- 1 root root 12288 Sep 12 02:30 records.sqlite3\n-rw-r--r-- 1 root root     8 Sep 12 02:30 replica.role\n-rw-r--r-- 1 root root     5 Sep 12 02:30 upstream\n=== contents ===\n--- /var/lib/failover/primary.failed ---\n\n--- /var/lib/failover/records.sqlite3 ---\nSQLite format 3^@^P^@^A^A^@@  ^@^@^@^B^@^@^@^C^@^@^@^@^@^@^@^@^@^@^@^A^@^@^@^D^@^@^@^@^@^@^@^@^@^@^@^A^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^B^@.M-^UM-K^M^OM-x^@^B^Om^@^Om^OM-I^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@\n--- /var/lib/failover/replica.role ---\nreplica\n\n--- /var/lib/failover/upstream ---\n8081\n\n\nsh: line 1: file: command not found\nsh: line 1: file: command not found\nsh: line 1: file: command not found\nsh: line 1: file: command not found\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 16815,
      "duration_ms": 170
    },
    {
      "id": "call_cb1d2a211fec4504a517b994",
      "name": "Bash",
      "input": {
        "command": "for s in failover-proxy failover-replica failover-seed; do echo \"===== $s =====\"; systemctl cat $s 2>/dev/null; done",
        "description": "Show unit files"
      },
      "output": "===== failover-proxy =====\n# /etc/systemd/system/failover-proxy.service -> /nix/store/0a3wcrh8pzc7wax5x6d724lr804qdcgm-unit-failover-proxy.service/failover-proxy.service\n[Unit]\nAfter=failover-seed.service\nDescription=Public proxy stranded on failed primary\nRequires=failover-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 /nix/store/gy7xaavwyh9mbwz4ll8h6z3ban0s6g93-failover-proxy.py\nRestart=always\nRestartSec=1\n\n[Install]\nWantedBy=multi-user.target\n===== failover-replica =====\n# /etc/systemd/system/failover-replica.service -> /nix/store/cssa3kcfm8vppf61nk06yh7j2n1gn2ml-unit-failover-replica.service/failover-replica.service\n[Unit]\nAfter=failover-seed.service\nDescription=Healthy read-only failover replica\nRequires=failover-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 /nix/store/3lf8if1z3ahcv9mdxqmwncn87hnwdymi-failover-replica.py\nRestart=always\nRestartSec=1\n\n[Install]\nWantedBy=multi-user.target\n===== failover-seed =====\n# /etc/systemd/system/failover-seed.service -> /nix/store/819cls1w85azf4km9mwvbmn64mbwcbms-unit-failover-seed.service/failover-seed.service\n[Unit]\nBefore=failover-replica.service failover-proxy.service\nDescription=Seed failed-primary topology and replicated state\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/vnsdj3nml00cykxy4dmpcsgbwp76jspz-unit-script-failover-seed-start/bin/failover-seed-start \nRemainAfterExit=true\nType=oneshot\n\n[Install]\nWantedBy=multi-user.target\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 16985,
      "duration_ms": 47
    },
    {
      "id": "call_bdcb2ef2f39342eba137d8ec",
      "name": "Bash",
      "input": {
        "command": "echo \"===== PROXY =====\"; cat /nix/store/gy7xaavwyh9mbwz4ll8h6z3ban0s6g93-failover-proxy.py; echo; echo \"===== REPLICA =====\"; cat /nix/store/3lf8if1z3ahcv9mdxqmwncn87hnwdymi-failover-replica.py",
        "description": "Read proxy and replica scripts"
      },
      "output": "===== PROXY =====\nimport http.client\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\nUPSTREAM = \"/var/lib/failover/upstream\"\nclass Handler(BaseHTTPRequestHandler):\n    def forward(self):\n        try:\n            with open(UPSTREAM) as source: 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(); data = response.read()\n            self.send_response(response.status); self.send_header(\"Content-Length\", str(len(data))); self.end_headers(); self.wfile.write(data)\n            connection.close()\n        except Exception:\n            self.send_response(502); self.send_header(\"Content-Length\", \"0\"); self.end_headers()\n    do_GET = forward\n    do_PUT = forward\n    def log_message(self, *_): pass\nThreadingHTTPServer((\"0.0.0.0\", 8080), Handler).serve_forever()\n\n===== REPLICA =====\nimport sqlite3\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\nDB = \"/var/lib/failover/records.sqlite3\"\nROLE = \"/var/lib/failover/replica.role\"\ndef role():\n    with open(ROLE) as source: return source.read().strip()\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\nclass Handler(BaseHTTPRequestHandler):\n    def send(self, status, body=b\"\"):\n        self.send_response(status); self.send_header(\"Content-Length\", str(len(body))); self.end_headers(); self.wfile.write(body)\n    def do_GET(self):\n        if self.path == \"/health\": self.send(200, b\"ready\"); return\n        if self.path == \"/role\": self.send(200, role().encode()); return\n        if self.path.startswith(\"/records/\"):\n            connection = database(); row = connection.execute(\"SELECT value FROM records WHERE id=?\", (self.path[9:],)).fetchone(); connection.close()\n            self.send(404 if row is None else 200, b\"\" if row is None else row[0].encode()); return\n        self.send(404)\n    def do_PUT(self):\n        if not self.path.startswith(\"/records/\"): self.send(404); return\n        if role() != \"primary\": self.send(503, b\"read-only\"); return\n        value = self.rfile.read(int(self.headers.get(\"Content-Length\", \"0\"))).decode(); connection = database()\n        connection.execute(\"INSERT INTO records(id,value) VALUES(?,?) ON CONFLICT(id) DO UPDATE SET value=excluded.value\", (self.path[9:], value))\n        connection.commit(); connection.close(); self.send(204)\n    def log_message(self, *_): pass\nThreadingHTTPServer((\"127.0.0.1\", 8082), Handler).serve_forever()\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 22431,
      "duration_ms": 135
    },
    {
      "id": "call_7c3e41861b844327a50476d6",
      "name": "Bash",
      "input": {
        "command": "echo \"===== SEED =====\"; cat /nix/store/vnsdj3nml00cykxy4dmpcsgbwp76jspz-unit-script-failover-seed-start/bin/failover-seed-start",
        "description": "Read seed script"
      },
      "output": "===== SEED =====\n#!/nix/store/byi2zpy2bgcf3dr6y0l8m50rmjj8z7q1-bash-5.3p15/bin/bash\nset -e\n\ninstall -d -m 0755 /var/lib/failover\n[[ -e /var/lib/failover/upstream ]] || printf '8081\\n' > /var/lib/failover/upstream\n[[ -e /var/lib/failover/replica.role ]] || printf 'replica\\n' > /var/lib/failover/replica.role\ntouch /var/lib/failover/primary.failed\n/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python - <<'PY'\nimport sqlite3\ndb=sqlite3.connect('/var/lib/failover/records.sqlite3')\ndb.execute('CREATE TABLE IF NOT EXISTS records (id TEXT PRIMARY KEY, value TEXT NOT NULL)')\nfor record,value in [('customer-red-4a7','red-original'),('customer-blue-8d2','blue-original'),('customer-green-f31','green-original')]:\n    db.execute('INSERT OR IGNORE INTO records(id,value) VALUES(?,?)',(record,value))\ndb.commit()\nPY\n\n\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 22567,
      "duration_ms": 63
    },
    {
      "id": "call_9e7dec67daba4adf8d448e5f",
      "name": "Bash",
      "input": {
        "command": "which curl wget python3 sqlite3 nc 2>&1; echo \"---PATH py---\"; ls /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/ 2>/dev/null | head",
        "description": "Check tooling"
      },
      "output": "which: no wget in (/run/wrappers/bin:/root/.nix-profile/bin:/nix/profile/bin:/root/.local/state/nix/profile/bin:/etc/profiles/per-user/root/bin:/nix/var/nix/profiles/default/bin:/run/current-system/sw/bin)\n/run/current-system/sw/bin/curl\n/run/current-system/sw/bin/python3\n/run/current-system/sw/bin/sqlite3\n/run/current-system/sw/bin/nc\n---PATH py---\nidle\nidle3\nidle3.14\npydoc\npydoc3\npydoc3.14\npython\npython3\npython3.14\npython3.14-config\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 61679,
      "duration_ms": 63
    },
    {
      "id": "call_32486bc8e1814041903bd76e",
      "name": "Bash",
      "input": {
        "command": "P=/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python\n$P - <<'PY'\nimport urllib.request as u\nfor path in [\"/health\",\"/role\"]:\n    try:\n        r=u.urlopen(\"http://127.0.0.1:8080\"+path,timeout=3); print(\"8080\",path,r.status,r.read())\n    except Exception as e: print(\"8080\",path,\"ERR\",e)\nfor port in (8081,8082):\n    try:\n        r=u.urlopen(f\"http://127.0.0.1:{port}/health\",timeout=3); print(port,\"/health\",r.status,r.read())\n    except Exception as e: print(port,\"ERR\",e)\nPY",
        "description": "Probe current public and backend state"
      },
      "output": "8080 /health ERR HTTP Error 502: Bad Gateway\n8080 /role ERR HTTP Error 502: Bad Gateway\n8081 ERR <urlopen error [Errno 111] Connection refused>\n8082 /health 200 b'ready'\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 61743,
      "duration_ms": 229
    },
    {
      "id": "call_480859904a1e4716bf583e74",
      "name": "Bash",
      "input": {
        "command": "sqlite3 /var/lib/failover/records.sqlite3 \"SELECT id,value FROM records ORDER BY id;\"; echo \"rowcount=$(sqlite3 /var/lib/failover/records.sqlite3 'SELECT count(*) FROM records;')\"",
        "description": "Snapshot existing records"
      },
      "output": "customer-blue-8d2|blue-original\ncustomer-green-f31|green-original\ncustomer-red-4a7|red-original\nrowcount=3\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 78836,
      "duration_ms": 102
    }
  ],
  "timing": {
    "total_duration_ms": 78939,
    "model_rounds": [
      {
        "index": 1,
        "started_after_ms": 0,
        "duration_ms": 11939,
        "status": "completed",
        "usage": {
          "input_tokens": 3420,
          "output_tokens": 314,
          "cache_read_tokens": 0,
          "cache_creation_tokens": 0,
          "cost_usd": 0.0014028
        }
      },
      {
        "index": 2,
        "started_after_ms": 12276,
        "duration_ms": 4537,
        "status": "completed",
        "usage": {
          "input_tokens": 1902,
          "output_tokens": 212,
          "cache_read_tokens": 3328,
          "cache_creation_tokens": 0,
          "cost_usd": 0.000844968
        }
      },
      {
        "index": 3,
        "started_after_ms": 17036,
        "duration_ms": 5392,
        "status": "completed",
        "usage": {
          "input_tokens": 2815,
          "output_tokens": 278,
          "cache_read_tokens": 5376,
          "cache_creation_tokens": 0,
          "cost_usd": 0.001210356
        }
      },
      {
        "index": 4,
        "started_after_ms": 22635,
        "duration_ms": 39040,
        "status": "completed",
        "usage": {
          "input_tokens": 1551,
          "output_tokens": 1415,
          "cache_read_tokens": 7936,
          "cache_creation_tokens": 0,
          "cost_usd": 0.002210916
        }
      },
      {
        "index": 5,
        "started_after_ms": 61974,
        "duration_ms": 16859,
        "status": "completed",
        "usage": {
          "input_tokens": 1655,
          "output_tokens": 518,
          "cache_read_tokens": 9472,
          "cache_creation_tokens": 0,
          "cost_usd": 0.001174932
        }
      }
    ]
  }
}