G_ETL(s): AI Data Transfer Function

Using OpenAI as a Serverless Transformation Engine.

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1. Input Signal: Raw Data (D_Raw)

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2. Output Response: BI-Ready Data (D_BI)

Awaiting transformation...

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\n\n\n\n`;\n}\n\n// --- API ROUTING & LOGIC ---\nconst app = new Hono();\nconst openai = new OpenAI();\n\n// Middleware to ensure database is ready\napp.use(\"*\", async (c, next) => {\n await initializeDatabase();\n await next();\n});\n\n// Endpoint to receive raw data, transform it, and load it into the database\napp.post(\"/transform\", async (c) => {\n const { rawData } = await c.req.json<{ rawData: string }>();\n if (!rawData) {\n return c.json({ error: \"rawData field is required\" }, 400);\n }\n\n // This is the core of the \"Transfer Function\" G_ETL(s)\n const completion = await openai.chat.completions.create({\n model: \"gpt-4o\",\n messages: [\n { role: \"system\", content: DATA_TRANSFORM_PROMPT },\n { role: \"user\", content: rawData },\n ],\n temperature: 0.1, // Low temperature for deterministic, precise output\n response_format: { type: \"json_object\" },\n });\n\n const aiResult: AIResponse = JSON.parse(completion.choices[0].message.content);\n\n if (aiResult.status === \"REJECTED\" || !aiResult.event) {\n return c.json({\n rejectionReason: aiResult.rejectionReason || \"AI rejected input without a reason.\",\n }, 422); // Unprocessable Entity\n }\n\n // If transformation is successful, load the data into SQLite\n const { event } = aiResult;\n try {\n await sqlite.execute({\n sql: `\n INSERT INTO transformed_events (event_type, user_identifier, event_timestamp, raw_data_input, structured_data)\n VALUES (:eventType, :userIdentifier, :timestamp, :rawData, :structuredData)\n `,\n args: {\n eventType: event.eventType,\n userIdentifier: event.user.email || event.user.userId,\n timestamp: event.timestamp,\n rawData: rawData,\n structuredData: JSON.stringify(event),\n },\n });\n return c.json(event);\n } catch (dbError) {\n console.error(\"Database Load Error:\", dbError);\n return c.json({ error: \"Failed to load transformed data into the database.\", details: dbError.message }, 500);\n }\n});\n\n// Endpoint to query the transformed data (\"Data Warehouse\")\napp.get(\"/events\", async (c) => {\n const { results } = await sqlite.execute(\n \"SELECT event_type, user_identifier, event_timestamp FROM transformed_events ORDER BY id DESC LIMIT 50\",\n );\n return c.json(results);\n});\n\n// Serve the main HTML page\napp.get(\"/\", (c) => {\n const sourceUrl = new URL(c.req.url).origin + new URL(c.req.url).pathname;\n return c.html(generateHtml(sourceUrl));\n});\n\nexport default app.fetch;","deleted","label","etl",[98],"permalink","https://www.val.town/x/real/Etl/code/main.tsx","extension","actionData","errors"]

GETL(s): AI Data Transfer Function

1. Input Signal: Raw Data (DRaw)

2. Output Response: BI-Ready Data (DBI)

G_ETL(s): AI Data Transfer Function

1. Input Signal: Raw Data (D_Raw)

2. Output Response: BI-Ready Data (D_BI)