aio-01d4-stu/Last3Mon/77/answers/77-lab03-challenge2-slo-alert.json

{
  "name": "77 SLO alert (answer)",
  "nodes": [
    {
      "name": "SLO webhook",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2,
      "parameters": {
        "httpMethod": "POST",
        "path": "my-slo-alert",
        "responseMode": "responseNode",
        "options": {}
      },
      "position": [
        0,
        300
      ]
    },
    {
      "name": "Get report",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "parameters": {
        "method": "POST",
        "url": "http://localhost:5678/webhook/my-log-report",
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={{ JSON.stringify({ from: $json.body.from ?? '', to: $json.body.to ?? '', tag: $json.body.tag ?? '', source: $json.body.source ?? 'all', slo: $json.body.slo ?? {} }) }}",
        "options": {
          "timeout": 30000
        }
      },
      "position": [
        220,
        300
      ]
    },
    {
      "name": "Recent alerts",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "parameters": {
        "method": "POST",
        "url": "http://data-api:8800/alerts/list",
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={{ JSON.stringify({ workflow: 'slo', reason: 'slo', within: 600 }) }}",
        "options": {}
      },
      "position": [
        440,
        300
      ]
    },
    {
      "name": "Decide",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "parameters": {
        "jsCode": "const r = $('Get report').first().json;\nconst recent = $json.count ?? 0;\nconst breaches = r.slo?.breaches ?? [];\nconst message = breaches.length ? 'SLO breach: ' + breaches.map((k) => `${k} ${r[k]} > ${r.slo.limits[k]}`).join(', ') : '';\nconst alert = breaches.length === 0 ? 'none' : recent > 0 ? 'suppressed' : 'sent';\nreturn [{ json: { ok: breaches.length === 0, breaches, alert, message, total: r.total } }];"
      },
      "position": [
        660,
        300
      ]
    },
    {
      "name": "Send it?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "leftValue": "",
            "typeValidation": "loose",
            "version": 2
          },
          "conditions": [
            {
              "id": "c1",
              "leftValue": "={{ $json.alert === 'sent' }}",
              "rightValue": "",
              "operator": {
                "type": "boolean",
                "operation": "true",
                "singleValue": true
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "position": [
        880,
        300
      ]
    },
    {
      "name": "Send alert",
      "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: 'slo', severity: 'high', reason: 'slo', breaches: $json.breaches, message: $json.message }) }}",
        "options": {
          "response": {
            "response": {
              "neverError": true
            }
          }
        }
      },
      "position": [
        1100,
        200
      ]
    },
    {
      "name": "Result",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "parameters": {
        "jsCode": "return [{ json: $('Decide').first().json }];"
      },
      "position": [
        1320,
        300
      ]
    },
    {
      "name": "Send result",
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1.1,
      "parameters": {
        "respondWith": "json",
        "responseBody": "={{ $json }}",
        "options": {}
      },
      "position": [
        1540,
        300
      ]
    }
  ],
  "connections": {
    "SLO webhook": {
      "main": [
        [
          {
            "node": "Get report",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get report": {
      "main": [
        [
          {
            "node": "Recent alerts",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Recent alerts": {
      "main": [
        [
          {
            "node": "Decide",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Decide": {
      "main": [
        [
          {
            "node": "Send it?",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Send it?": {
      "main": [
        [
          {
            "node": "Send alert",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Result",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Send alert": {
      "main": [
        [
          {
            "node": "Result",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Result": {
      "main": [
        [
          {
            "node": "Send result",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1"
  }
}