{ "name": "OpenShift Performance Metrics - MCP", "nodes": [ { "parameters": {}, "id": "trigger", "name": "Manual Trigger", "type": "n8n-nodes-base.manualTrigger", "typeVersion": 1, "position": [ 180, 300 ] }, { "parameters": { "assignments": { "assignments": [ { "id": "ns", "name": "namespace", "value": "openshift-lightspeed", "type": "string" }, { "id": "email", "name": "destinationEmail", "value": "maximiliano.pizarro.5@gmail.com", "type": "string" }, { "id": "mcpHost", "name": "mcpHost", "value": "field-content-ols.openshift-lightspeed.svc.cluster.local", "type": "string" }, { "id": "mcpPort", "name": "mcpPort", "value": "8080", "type": "string" }, { "id": "tool", "name": "toolName", "value": "getPerformanceMetrics", "type": "string" }, { "id": "litellmHost", "name": "litellmHost", "value": "field-content-ols-litellm.openshift-lightspeed.svc.cluster.local", "type": "string" }, { "id": "litellmPort", "name": "litellmPort", "value": "4000", "type": "string" }, { "id": "litellmApiKey", "name": "litellmApiKey", "value": "sk-openshift-mcp-1234", "type": "string" } ] }, "options": {} }, "id": "set-params", "name": "Set Parameters", "type": "n8n-nodes-base.set", "typeVersion": 3.4, "position": [ 400, 300 ] }, { "parameters": { "jsCode": "const http = require('http');\n\nfunction mcpRequest(host, port, body, sessionId) {\n return new Promise((resolve, reject) => {\n const data = JSON.stringify(body);\n const headers = { 'Content-Type': 'application/json', 'Accept': 'application/json, text/event-stream', 'Content-Length': Buffer.byteLength(data) };\n if (sessionId) headers['Mcp-Session-Id'] = sessionId;\n const req = http.request({ hostname: host, port, path: '/mcp', method: 'POST', headers }, (res) => {\n let body = '';\n res.on('data', (chunk) => body += chunk);\n res.on('end', () => {\n const lines = body.split('\\n');\n let jsonData = '';\n for (const line of lines) { if (line.startsWith('data: ')) jsonData = line.substring(6); }\n resolve({ status: res.statusCode, headers: res.headers, body: jsonData || body });\n });\n });\n req.on('error', reject);\n req.write(data);\n req.end();\n });\n}\n\nasync function callMcpTool(host, port, toolName, toolArgs) {\n const init = await mcpRequest(host, port, { jsonrpc: '2.0', id: 1, method: 'initialize', params: { protocolVersion: '2024-11-05', capabilities: {}, clientInfo: { name: 'n8n-workflow', version: '1.0' } } });\n const sid = init.headers['mcp-session-id'];\n await mcpRequest(host, port, { jsonrpc: '2.0', method: 'notifications/initialized' }, sid);\n const result = await mcpRequest(host, port, { jsonrpc: '2.0', id: 3, method: 'tools/call', params: { name: toolName, arguments: toolArgs } }, sid);\n const parsed = JSON.parse(result.body);\n return parsed.result?.content?.[0]?.text || 'Error: ' + JSON.stringify(parsed.error);\n}\n\nconst j = $input.first().json;\nconst host = j.mcpHost;\nconst port = parseInt(j.mcpPort, 10);\nconst mcpOutput = await callMcpTool(host, port, j.toolName, { namespace: j.namespace });\nreturn [{ json: { ...j, mcpOutput } }];\n" }, "id": "mcp-call", "name": "MCP Tool Call", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 620, 300 ] }, { "parameters": { "jsCode": "const http = require('http');\nconst input = $input.first().json;\nconst litellmHost = input.litellmHost;\nconst litellmPort = parseInt(input.litellmPort, 10);\nconst litellmApiKey = input.litellmApiKey || '';\nconst toolName = input.toolName;\nconst namespace = input.namespace;\nconst mcpOutputFull = input.mcpOutput || '';\nconst mcpOutput = mcpOutputFull.length > 800 ? mcpOutputFull.substring(0, 800) + '\\n[... truncated for AI analysis, see Raw MCP Output below for full data]' : mcpOutputFull;\nconst systemPrompt = 'Analyze this OpenShift MCP output for tool \"' + toolName + '\" in namespace \"' + namespace + '\". Reply with: 1) HTML table of key data, 2) Health status (Healthy/Warning/Critical). Be concise, use inline CSS.';\nconst requestBody = JSON.stringify({\n model: 'granite',\n messages: [\n { role: 'system', content: systemPrompt },\n { role: 'user', content: mcpOutput }\n ],\n temperature: 0.3,\n max_tokens: 1024\n});\nreturn new Promise((resolve, reject) => {\n const req = http.request({\n hostname: litellmHost,\n port: litellmPort,\n path: '/v1/chat/completions',\n method: 'POST',\n headers: {\n 'Content-Type': 'application/json',\n 'Authorization': 'Bearer ' + litellmApiKey,\n 'Content-Length': Buffer.byteLength(requestBody)\n }\n }, (res) => {\n let data = '';\n res.on('data', (chunk) => { data += chunk; });\n res.on('end', () => {\n try {\n const parsed = JSON.parse(data);\n let rawAI = parsed.choices?.[0]?.message?.content || 'AI analysis unavailable';\n rawAI = rawAI.replace(/[\\s\\S]*?<\\/think>/g, '').trim();\n const aiAnalysis = rawAI.length > 1800 ? rawAI.substring(0, 1800) + '\n[... truncated ...]' : rawAI;\n const model = parsed.model || 'deepseek-r1-distill-qwen-14b';\n resolve([{ json: { ...input, aiAnalysis, aiModel: model } }]);\n } catch (e) {\n resolve([{ json: { ...input, aiAnalysis: 'AI analysis failed: ' + e.message, aiModel: 'error' } }]);\n }\n });\n });\n req.on('error', (e) => {\n resolve([{ json: { ...input, aiAnalysis: 'AI service unavailable: ' + e.message, aiModel: 'unreachable' } }]);\n });\n req.write(requestBody);\n req.end();\n});\n" }, "id": "ai-format", "name": "AI Format & Explain", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 840, 300 ] }, { "parameters": { "jsCode": "const http = require('http');\nconst input = $input.first().json;\nconst namespace = input.namespace;\nconst email = input.destinationEmail;\nconst toolName = input.toolName;\nconst mcpOutput = input.mcpOutput || '';\nconst aiAnalysis = input.aiAnalysis || '';\nconst aiModel = input.aiModel || 'granite';\nconst ts = new Date().toISOString();\nconst title = \"Performance Metrics Report\";\nconst subtitle = \"Resource usage and performance monitoring via MCP\";\nconst escapedOutput = mcpOutput.replace(/&/g,'&').replace(//g,'>');\nconst html = `\n
\n\n\n\n\n\n\n\n
\nRed Hat\nOpenShift Developer Sandbox
\n

${title}

\n

${subtitle}

\n\n\n\n\n\n
\n${namespace}Namespace\n${ts}Generated\n${toolName}MCP Tool\n${aiModel}AI Model
\n

AI Analysis

\n
${aiAnalysis}
\n
\n

Raw MCP Output

\n
${escapedOutput}
\n
\nRED HAT\nOpenShift MCP Server\nn8n\n
\n

Auto-generated by n8n on Red Hat OpenShift Developer Sandbox

\n
`;\nconst subject = `[Red Hat OpenShift] ${title} | ${namespace} | ${ts}`;\nconst mailBody = JSON.stringify({\n From: { Name: 'n8n Workflow', Email: 'workflow@n8n.local' },\n To: [{ Name: 'Admin', Email: email }],\n Subject: subject,\n HTML: html\n});\nreturn new Promise((resolve, reject) => {\n const req = http.request({\n hostname: 'n8n-mailpit',\n port: 8025,\n path: '/api/v1/send',\n method: 'POST',\n headers: {\n 'Content-Type': 'application/json',\n 'Content-Length': Buffer.byteLength(mailBody)\n }\n }, (res) => {\n let data = '';\n res.on('data', (chunk) => { data += chunk; });\n res.on('end', () => {\n resolve([{ json: { mailpitStatus: res.statusCode, mailpitResponse: data, subject } }]);\n });\n });\n req.on('error', reject);\n req.write(mailBody);\n req.end();\n});\n" }, "id": "report-email", "name": "Build Report & Send Email", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 1060, 300 ] } ], "connections": { "Manual Trigger": { "main": [ [ { "node": "Set Parameters", "type": "main", "index": 0 } ] ] }, "Set Parameters": { "main": [ [ { "node": "MCP Tool Call", "type": "main", "index": 0 } ] ] }, "MCP Tool Call": { "main": [ [ { "node": "AI Format & Explain", "type": "main", "index": 0 } ] ] }, "AI Format & Explain": { "main": [ [ { "node": "Build Report & Send Email", "type": "main", "index": 0 } ] ] } }, "settings": { "executionOrder": "v1" }, "staticData": null, "active": false }