{ "id": "3eqTGbhtSxDjuMZC", "meta": { "templateCredsSetupCompleted": true }, "name": "Dynamic Search Interface with Elasticsearch and Automated Report Generation", "tags": [], "nodes": [ { "id": "e3eb30ef-51d9-4cd5-ab1f-807b87e06795", "name": "Search Form", "type": "n8n-nodes-base.formTrigger", "position": [ 480, -220 ], "parameters": { "path": "169f8e1c-e4a8-4229-9b2a-9db33003f221", "options": {}, "formTitle": "\ud83d\udd0d Dynamic Search", "formFields": { "values": [ { "fieldType": "number", "fieldLabel": "Minimum Amount ($)" }, { "fieldType": "dropdown", "fieldLabel": "Time Range", "fieldOptions": { "values": [ { "option": "Last 1 Hour" }, { "option": "Last 6 Hours" }, { "option": "Last 24 Hours" }, { "option": "Last 3 Days" } ] }, "requiredField": true }, { "fieldLabel": "Customer ID (Optional)" }, { "fieldType": "dropdown", "fieldLabel": "Report Format", "fieldOptions": { "values": [ { "option": "Text Report" }, { "option": "CSV Export" } ] }, "requiredField": true } ] }, "responseMode": "responseNode", "formDescription": "Search for suspicious transactions in your banking database" }, "typeVersion": 2.1 }, { "id": "79e2a04d-9427-4d8d-ae8a-41005a2ab80d", "name": "Build Search Query", "type": "n8n-nodes-base.code", "position": [ 700, -220 ], "parameters": { "jsCode": "// Process form input and build Elasticsearch query\nconst formData = $input.first().json;\n\n// Extract form values\nconst minAmount = formData['Minimum Amount ($)'] || 1000;\nconst timeRange = formData['Time Range'] || 'Last 24 Hours';\nconst customerId = formData['Customer ID (Optional)']?.trim() || null;\nconst reportFormat = formData['Report Format'] || 'Text Report';\n\n// Convert time range to Elasticsearch format\nlet timeRangeES;\nswitch(timeRange) {\n case 'Last 1 Hour':\n timeRangeES = 'now-1h';\n break;\n case 'Last 6 Hours':\n timeRangeES = 'now-6h';\n break;\n case 'Last 24 Hours':\n timeRangeES = 'now-24h';\n break;\n case 'Last 3 Days':\n timeRangeES = 'now-3d';\n break;\n default:\n timeRangeES = 'now-24h';\n}\n\n// Build Elasticsearch query\nconst mustConditions = [\n {\n \"range\": {\n \"timestamp\": {\n \"gte\": timeRangeES\n }\n }\n },\n {\n \"range\": {\n \"amount\": {\n \"gte\": minAmount\n }\n }\n }\n];\n\n// Add customer filter if provided\nif (customerId) {\n mustConditions.push({\n \"term\": {\n \"customer_id.keyword\": customerId\n }\n });\n}\n\nconst esQuery = {\n \"query\": {\n \"bool\": {\n \"must\": mustConditions\n }\n },\n \"sort\": [{ \"timestamp\": { \"order\": \"desc\" } }],\n \"size\": 100\n};\n\nreturn {\n elasticsearchQuery: esQuery,\n searchParams: {\n minAmount,\n timeRange,\n customerId,\n reportFormat\n }\n};" }, "typeVersion": 2 }, { "id": "62e186d7-c90f-4576-8c56-d850e784e9e0", "name": "Search Elasticsearch", "type": "n8n-nodes-base.httpRequest", "position": [ 940, -220 ], "parameters": { "url": "https://localhost:9220/bank_transactions/_search", "options": { "allowUnauthorizedCerts": true }, "jsonBody": "={{ $json.elasticsearchQuery }}", "sendBody": true, "specifyBody": "json", "authentication": "genericCredentialType", "genericAuthType": "httpBasicAuth" }, "typeVersion": 4.1 }, { "id": "4869c996-8a2e-40a1-aea3-384e0e379c14", "name": "Format Report", "type": "n8n-nodes-base.code", "position": [ 1140, -220 ], "parameters": { "jsCode": "// Get data from previous nodes\nconst esResponse = $input.first().json;\nconst searchParams = $('Build Search Query').first().json.searchParams;\n\n// Extract results\nconst hits = esResponse.hits?.hits || [];\nconst totalFound = esResponse.hits?.total?.value || 0;\n\n// Generate filename\nconst timestamp = new Date().toISOString().split('T')[0];\nconst isCSV = searchParams.reportFormat === 'CSV Export';\nconst filename = `report_${timestamp}.${isCSV ? 'csv' : 'txt'}`;\nconst mimeType = isCSV ? 'text/csv' : 'text/plain';\n\n// Generate report content\nlet reportContent = '';\n\nif (isCSV) {\n // CSV format\n reportContent = 'Transaction_ID,Customer_ID,Amount,Merchant_Category,Timestamp\\n';\n hits.forEach(hit => {\n const t = hit._source || {};\n reportContent += `\"${t.transaction_id || ''}\",\"${t.customer_id || ''}\",${t.amount || 0},\"${t.merchant_category || ''}\",\"${t.timestamp || ''}\"\\n`;\n });\n} else {\n // Text format\n reportContent = `DYNAMIC SEARCH REPORT\\n`;\n reportContent += `======================\\n\\n`;\n reportContent += `Search Criteria:\\n`;\n reportContent += `- Minimum Amount: $${searchParams.minAmount}\\n`;\n reportContent += `- Time Range: ${searchParams.timeRange}\\n`;\n reportContent += `- Customer: ${searchParams.customerId || 'All'}\\n\\n`;\n reportContent += `Results: ${totalFound} transactions found\\n\\n`;\n \n if (hits.length > 0) {\n reportContent += `TRANSACTIONS:\\n`;\n reportContent += `=============\\n\\n`;\n hits.forEach((hit, index) => {\n const t = hit._source || {};\n reportContent += `${index + 1}. Transaction ID: ${t.transaction_id}\\n`;\n reportContent += ` Customer: ${t.customer_id}\\n`;\n reportContent += ` Amount: $${t.amount}\\n`;\n reportContent += ` Merchant: ${t.merchant_category}\\n`;\n reportContent += ` Time: ${t.timestamp}\\n\\n`;\n });\n } else {\n reportContent += `No suspicious transactions found matching your criteria.\\n`;\n }\n}\n\n// Convert content to binary data\nconst binaryData = Buffer.from(reportContent, 'utf8');\n\nreturn {\n json: {\n filename: filename,\n mimeType: mimeType,\n content: reportContent\n },\n binary: {\n data: binaryData\n }\n};" }, "typeVersion": 2 }, { "id": "764ac1c5-0ae2-4048-884b-dceb4ea6d719", "name": "Read/Write Files from Disk", "type": "n8n-nodes-base.readWriteFile", "position": [ 1320, -220 ], "parameters": { "options": {}, "fileName": "=/tmp/{{ $json.filename }}", "operation": "write" }, "typeVersion": 1 }, { "id": "b4c9ae5c-cd17-492e-a543-205329a872b9", "name": "Sticky Note", "type": "n8n-nodes-base.stickyNote", "position": [ 40, -260 ], "parameters": { "width": 360, "height": 220, "content": "## \ud83c\udfaf ENTRY POINT\nUser fills out dynamic search form with:\n- Minimum transaction amount\n- Time range (1hr to 3 days)\n- Optional customer ID filter\n- Output format (Text/CSV)\n\n\ud83d\udca1 TIP: Form auto-validates required fields!" }, "typeVersion": 1 }, { "id": "b36fea54-e177-4edc-a091-110b25475ad4", "name": "Sticky Note1", "type": "n8n-nodes-base.stickyNote", "position": [ 40, 0 ], "parameters": { "color": 2, "width": 360, "height": 300, "content": "## \ud83d\udd27 QUERY BUILDER\nTransforms user input into Elasticsearch query:\n\n\u2705 Converts time ranges:\n \"Last 24 Hours\" \u2192 \"now-24h\"\n \"Last 3 Days\" \u2192 \"now-3d\"\n\n\u2705 Builds filters:\n \u2022 Amount >= minimum\n \u2022 Timestamp within range\n \u2022 Customer ID (if provided)\n\n\ud83d\udcca Output: Ready-to-use ES query + metadata" }, "typeVersion": 1 }, { "id": "8d3f38d7-b483-43cb-bcb5-9524a7a17e86", "name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [ 440, 0 ], "parameters": { "color": 3, "width": 320, "height": 260, "content": "## \ud83c\udfaf DATA HUNTER\nSearches bank_transactions index for suspicious activity\n\n\ud83d\udd27 Configuration:\n \u2022 POST to localhost:9220\n \u2022 Uses HTTP Basic Auth\n \u2022 Sends JSON query from previous node\n \u2022 Returns max 100 results, newest first\n\n\u26a0\ufe0f Note: Requires valid ES credentials!" }, "typeVersion": 1 }, { "id": "11039177-def0-4de1-ad25-f91e1294abee", "name": "Sticky Note3", "type": "n8n-nodes-base.stickyNote", "position": [ 800, 0 ], "parameters": { "color": 4, "width": 340, "height": 340, "content": "## \ud83d\udcdd REPORT GENERATOR\nTransforms raw ES data into user-friendly reports\n\n\ud83c\udfa8 Creates two formats:\n \ud83d\udcc4 TEXT: Human-readable summary\n \ud83d\udcca CSV: Spreadsheet-ready data export\n\n\u2728 Features:\n \u2022 Auto-generates timestamped filename\n \u2022 Converts text to binary for file writing\n \u2022 Includes search criteria summary\n \u2022 Lists all suspicious transactions\n\n\ud83d\udd04 Output: Content + Binary data ready for file save" }, "typeVersion": 1 }, { "id": "7c8c7226-a9e3-4edb-9497-e1980f3e84ea", "name": "Sticky Note4", "type": "n8n-nodes-base.stickyNote", "position": [ 1180, 0 ], "parameters": { "color": 5, "width": 400, "height": 260, "content": "## \ud83d\udcc1 FILE SAVER\nWrites the report to server disk\n\n\ud83d\udccd Location: /tmp/report_YYYY-MM-DD.{txt|csv}\n\ud83d\udd27 Uses binary data from Format Report node\n\u2705 File ready for download or further processing\n\n\ud83c\udfaf Perfect for:\n \u2022 Audit trails\n \u2022 Batch processing\n \u2022 Compliance reporting" }, "typeVersion": 1 }, { "id": "79d96536-a117-474b-a524-ec0e54f7ae2b", "name": "Sticky Note5", "type": "n8n-nodes-base.stickyNote", "position": [ 40, -520 ], "parameters": { "color": 6, "width": 720, "height": 200, "content": "## \ud83c\udfaf DYNAMIC SEARCH PIPELINE\n\nUser Form \u2192 Query Builder \u2192 ES Search \u2192 Report Format \u2192 File Save\n\n\u23f1\ufe0f Typical execution: 2-5 seconds\n\ud83d\udcca Handles up to 100 suspicious transactions\n\ud83d\udd12 Secure: Uses authenticated ES connection\n\ud83d\udcc1 Output: Timestamped report files in /tmp/" }, "typeVersion": 1 } ], "active": false, "settings": { "executionOrder": "v1" }, "versionId": "42705d97-c55a-4ebe-8107-536a8c7faea3", "connections": { "Search Form": { "main": [ [ { "node": "Build Search Query", "type": "main", "index": 0 } ] ] }, "Format Report": { "main": [ [ { "node": "Read/Write Files from Disk", "type": "main", "index": 0 } ] ] }, "Build Search Query": { "main": [ [ { "node": "Search Elasticsearch", "type": "main", "index": 0 } ] ] }, "Search Elasticsearch": { "main": [ [ { "node": "Format Report", "type": "main", "index": 0 } ] ] } } }