Snowflake 커넥터

const tokenResponse = await fetch(
  'https://<account>.snowflakecomputing.com/oauth/token-request',
  {
    method: 'POST',
    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
    body: new URLSearchParams({
      grant_type: 'client_credentials',
      client_id: process.env.SNOWFLAKE_CLIENT_ID,
      client_secret: process.env.SNOWFLAKE_CLIENT_SECRET,
      scope: 'session:role:TAJO_ROLE'
    })
  }
);

connectors:
  snowflake:
    enabled: true
    account: "your-account.snowflakecomputing.com"
    warehouse: "TAJO_WH"
    database: "MARKETING_DB"
    schema: "PUBLIC"
    role: "TAJO_ROLE"

    sync:
      customers: true
      segments: true
      analytics: true
      schedule: "0 */6 * * *"  # 6시간마다

    queries:
      customer_segments: |
        SELECT email, segment_name, ltv_score, rfm_class
        FROM customer_segments
        WHERE updated_at > :last_sync

field_mapping:
  email: email
  first_name: FIRSTNAME
  last_name: LASTNAME
  ltv_score: LTV_SCORE
  rfm_class: RFM_SEGMENT
  total_orders: ORDER_COUNT
  last_purchase_date: LAST_ORDER_DATE
  predicted_churn: CHURN_RISK
  customer_segment: SEGMENT_NAME

import { TajoClient } from '@tajo/sdk';

const tajo = new TajoClient({
  apiKey: process.env.TAJO_API_KEY,
  brevoApiKey: process.env.BREVO_API_KEY
});

await tajo.connectors.connect('snowflake', {
  account: process.env.SNOWFLAKE_ACCOUNT,
  privateKey: process.env.SNOWFLAKE_PRIVATE_KEY,
  warehouse: 'TAJO_WH',
  database: 'MARKETING_DB',
  schema: 'PUBLIC'
});

// Snowflake SQL REST API를 통해 SQL 쿼리 실행
const response = await fetch(
  `https://${account}.snowflakecomputing.com/api/v2/statements`,
  {
    method: 'POST',
    headers: {
      'Authorization': `Bearer ${jwtToken}`,
      'Content-Type': 'application/json',
      'X-Snowflake-Authorization-Token-Type': 'KEYPAIR_JWT'
    },
    body: JSON.stringify({
      statement: `SELECT email, segment, ltv FROM customer_segments
                  WHERE updated_at > '${lastSync}'`,
      warehouse: 'TAJO_WH',
      database: 'MARKETING_DB',
      schema: 'PUBLIC',
      timeout: 120
    })
  }
);

const result = await response.json();
const statementHandle = result.statementHandle;

// 결과 폴링
let status = result.statementStatusUrl;
while (result.code !== '090001') {
  const check = await fetch(status, {
    headers: { 'Authorization': `Bearer ${jwtToken}` }
  });
  result = await check.json();
}

// Tajo를 통해 Brevo로 동기화
for (const row of result.data) {
  await tajo.contacts.sync({
    email: row[0],
    attributes: { SEGMENT: row[1], LTV: row[2] }
  });
}

// Snowflake의 계산된 오디언스를 Brevo 목록으로 푸시
await tajo.connectors.sync('snowflake', {
  type: 'reverse-etl',
  query: `
    SELECT email, first_name, last_name, predicted_ltv, churn_score
    FROM ml_predictions.customer_scores
    WHERE score_date = CURRENT_DATE()
  `,
  destination: {
    list_id: 42,
    attribute_mapping: {
      predicted_ltv: 'PREDICTED_LTV',
      churn_score: 'CHURN_SCORE'
    }
  }
});

connectors:
  snowflake:
    debug: true
    log_level: verbose
    log_queries: true