{
  "name": "76 Replay · park after 3 attempts (answer, Lab 03 task 1)",
  "nodes": [
    {
      "name": "Replay webhook",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2,
      "parameters": {
        "httpMethod": "POST",
        "path": "my-replay",
        "responseMode": "responseNode",
        "options": {}
      },
      "position": [
        0,
        300
      ]
    },
    {
      "name": "Get DLQ",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "parameters": {
        "url": "http://data-api:8800/dlq",
        "options": {}
      },
      "position": [
        220,
        300
      ]
    },
    {
      "name": "Pick items",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "parameters": {
        "jsCode": "const max = Number($('Replay webhook').first().json.body?.max_attempts ?? 3);\nconst items = ($json.items ?? []).filter((e) => !e.parked);\nconst ready = items.filter((e) => e.attempts < max);\nconst tooMany = items.filter((e) => e.attempts >= max);\nreturn [...ready.map((e) => ({ json: { ...e, action: 'replay' } })), ...tooMany.map((e) => ({ json: { ...e, action: 'park' } }))];"
      },
      "position": [
        440,
        300
      ],
      "alwaysOutputData": true
    },
    {
      "name": "Has items?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "leftValue": "",
            "typeValidation": "loose",
            "version": 2
          },
          "conditions": [
            {
              "id": "c1",
              "leftValue": "={{ $json.dlq_id }}",
              "rightValue": "",
              "operator": {
                "type": "string",
                "operation": "exists",
                "singleValue": true
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "position": [
        660,
        300
      ]
    },
    {
      "name": "Nothing to do",
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1.1,
      "parameters": {
        "respondWith": "json",
        "responseBody": "={{ JSON.stringify({ replayed: 0, ok: 0, still_failed: 0, parked: 0 }) }}",
        "options": {}
      },
      "position": [
        880,
        520
      ]
    },
    {
      "name": "Run intake again",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "parameters": {
        "method": "POST",
        "url": "http://localhost:5678/webhook/my-intake",
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={{ JSON.stringify({ requests: [$json.item] }) }}",
        "options": {
          "response": {
            "response": {
              "neverError": true
            }
          },
          "timeout": 60000
        }
      },
      "position": [
        1100,
        200
      ]
    },
    {
      "name": "Outcome",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "parameters": {
        "jsCode": "const picked = $('Replay it?').all().filter((item) => item.json.action === 'replay');\nreturn $input.all().map((item, i) => ({ json: { dlq_id: picked[i].json.dlq_id, id: picked[i].json.item?.id, ok: item.json.created === 1, duplicate: item.json.duplicates === 1 } }));"
      },
      "position": [
        1320,
        200
      ]
    },
    {
      "name": "Remove done",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "parameters": {
        "method": "POST",
        "url": "http://data-api:8800/dlq/update",
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={{ JSON.stringify({ dlq_id: $json.dlq_id, remove: $json.ok }) }}",
        "options": {
          "response": {
            "response": {
              "neverError": true
            }
          }
        }
      },
      "position": [
        1540,
        200
      ]
    },
    {
      "name": "Summarize",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "parameters": {
        "jsCode": "const ran = (n) => { try { return $(n).isExecuted; } catch (e) { return false; } };\nconst outcomes = ran('Outcome') ? $('Outcome').all().map((i) => i.json) : [];\nconst parked = ran('Park it') ? $('Park it').all().length : 0;\nconst ok = outcomes.filter((o) => o.ok).length;\nreturn [{ json: { replayed: outcomes.length, ok, still_failed: outcomes.length - ok, parked, duplicates: outcomes.filter((o) => o.duplicate).length } }];"
      },
      "position": [
        2200,
        300
      ]
    },
    {
      "name": "Send summary",
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1.1,
      "parameters": {
        "respondWith": "json",
        "responseBody": "={{ $json }}",
        "options": {}
      },
      "position": [
        2420,
        300
      ]
    },
    {
      "name": "Replay it?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "leftValue": "",
            "typeValidation": "loose",
            "version": 2
          },
          "conditions": [
            {
              "id": "c1",
              "leftValue": "={{ $json.action }}",
              "rightValue": "replay",
              "operator": {
                "type": "string",
                "operation": "equals"
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "position": [
        880,
        300
      ]
    },
    {
      "name": "Park it",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "parameters": {
        "method": "POST",
        "url": "http://data-api:8800/dlq/update",
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={{ JSON.stringify({ dlq_id: $json.dlq_id, parked: true, reason: 'gave up after ' + $json.attempts + ' attempts: ' + $json.reason }) }}",
        "options": {
          "response": {
            "response": {
              "neverError": true
            }
          }
        }
      },
      "position": [
        1100,
        420
      ]
    },
    {
      "name": "Alert parked",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "parameters": {
        "method": "POST",
        "url": "http://data-api:8800/alerts",
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={{ JSON.stringify({ workflow: 'replay', node: 'Park it', severity: 'high', reason: 'parked', dlq_id: $json.entry?.dlq_id, message: $json.entry?.dlq_id + ' (' + $json.entry?.item?.id + ') parked after ' + $json.entry?.attempts + ' attempts' }) }}",
        "options": {
          "response": {
            "response": {
              "neverError": true
            }
          }
        }
      },
      "position": [
        1320,
        420
      ]
    },
    {
      "name": "Collect",
      "type": "n8n-nodes-base.merge",
      "typeVersion": 3,
      "parameters": {
        "numberInputs": 2
      },
      "position": [
        1980,
        300
      ]
    }
  ],
  "connections": {
    "Replay webhook": {
      "main": [
        [
          {
            "node": "Get DLQ",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get DLQ": {
      "main": [
        [
          {
            "node": "Pick items",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Pick items": {
      "main": [
        [
          {
            "node": "Has items?",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Has items?": {
      "main": [
        [
          {
            "node": "Replay it?",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Nothing to do",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Run intake again": {
      "main": [
        [
          {
            "node": "Outcome",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Outcome": {
      "main": [
        [
          {
            "node": "Remove done",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Summarize": {
      "main": [
        [
          {
            "node": "Send summary",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Replay it?": {
      "main": [
        [
          {
            "node": "Run intake again",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Park it",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Park it": {
      "main": [
        [
          {
            "node": "Alert parked",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Remove done": {
      "main": [
        [
          {
            "node": "Collect",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Alert parked": {
      "main": [
        [
          {
            "node": "Collect",
            "type": "main",
            "index": 1
          }
        ]
      ]
    },
    "Collect": {
      "main": [
        [
          {
            "node": "Summarize",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1"
  }
}