feat: Sentinela v0.2.0 — Brazilian Financial Data API in Go
- 20 Go source files, single 16MB binary - SQLite + FTS5 full-text search (pure Go, no CGO) - BCB integration: Selic, CDI, IPCA, USD/BRL, EUR/BRL - CVM integration: 2,524 companies from registry - Fiber v2 REST API with 42 handlers - Auto-seeds on first run (~5s for BCB + CVM) - Token bucket rate limiter, optional API key auth - Periodic sync scheduler (configurable) - Graceful shutdown, structured logging (slog) - All endpoints tested with real data
This commit is contained in:
215
internal/db/market.go
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215
internal/db/market.go
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package db
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import (
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"database/sql"
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"fmt"
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)
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type SelicRecord struct {
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ID int64 `json:"id"`
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Date string `json:"date"`
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DailyRate float64 `json:"daily_rate"`
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AnnualRate *float64 `json:"annual_rate,omitempty"`
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TargetRate *float64 `json:"target_rate,omitempty"`
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}
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type CDIRecord struct {
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ID int64 `json:"id"`
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Date string `json:"date"`
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DailyRate float64 `json:"daily_rate"`
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AnnualRate *float64 `json:"annual_rate,omitempty"`
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}
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type IPCARecord struct {
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ID int64 `json:"id"`
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Date string `json:"date"`
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MonthlyRate float64 `json:"monthly_rate"`
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Accumulated12m *float64 `json:"accumulated_12m,omitempty"`
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}
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type FXRecord struct {
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ID int64 `json:"id"`
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Date string `json:"date"`
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Pair string `json:"pair"`
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Rate float64 `json:"rate"`
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}
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// Selic
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func (d *DB) InsertSelic(date string, daily float64, annual, target *float64) error {
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_, err := d.Conn.Exec(`INSERT OR IGNORE INTO selic_history (date, daily_rate, annual_rate, target_rate) VALUES (?,?,?,?)`,
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date, daily, annual, target)
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return err
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}
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func (d *DB) ListSelic(limit int, from, to string) ([]SelicRecord, error) {
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where, args := marketWhere(from, to)
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query := fmt.Sprintf("SELECT id, date, daily_rate, annual_rate, target_rate FROM selic_history %s ORDER BY date DESC LIMIT ?", where)
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args = append(args, limit)
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rows, err := d.Conn.Query(query, args...)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var out []SelicRecord
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for rows.Next() {
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var r SelicRecord
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rows.Scan(&r.ID, &r.Date, &r.DailyRate, &r.AnnualRate, &r.TargetRate)
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out = append(out, r)
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}
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return out, nil
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}
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func (d *DB) CurrentSelic() (*SelicRecord, error) {
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r := &SelicRecord{}
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err := d.Conn.QueryRow("SELECT id, date, daily_rate, annual_rate, target_rate FROM selic_history ORDER BY date DESC LIMIT 1").
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Scan(&r.ID, &r.Date, &r.DailyRate, &r.AnnualRate, &r.TargetRate)
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if err == sql.ErrNoRows {
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return nil, nil
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}
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return r, err
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}
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// CDI
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func (d *DB) InsertCDI(date string, daily float64, annual *float64) error {
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_, err := d.Conn.Exec(`INSERT OR IGNORE INTO cdi_history (date, daily_rate, annual_rate) VALUES (?,?,?)`,
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date, daily, annual)
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return err
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}
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func (d *DB) ListCDI(limit int, from, to string) ([]CDIRecord, error) {
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where, args := marketWhere(from, to)
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query := fmt.Sprintf("SELECT id, date, daily_rate, annual_rate FROM cdi_history %s ORDER BY date DESC LIMIT ?", where)
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args = append(args, limit)
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rows, err := d.Conn.Query(query, args...)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var out []CDIRecord
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for rows.Next() {
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var r CDIRecord
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rows.Scan(&r.ID, &r.Date, &r.DailyRate, &r.AnnualRate)
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out = append(out, r)
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}
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return out, nil
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}
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func (d *DB) CurrentCDI() (*CDIRecord, error) {
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r := &CDIRecord{}
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err := d.Conn.QueryRow("SELECT id, date, daily_rate, annual_rate FROM cdi_history ORDER BY date DESC LIMIT 1").
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Scan(&r.ID, &r.Date, &r.DailyRate, &r.AnnualRate)
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if err == sql.ErrNoRows {
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return nil, nil
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}
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return r, err
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}
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// IPCA
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func (d *DB) InsertIPCA(date string, monthly float64, acc12m *float64) error {
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_, err := d.Conn.Exec(`INSERT OR IGNORE INTO ipca_history (date, monthly_rate, accumulated_12m) VALUES (?,?,?)`,
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date, monthly, acc12m)
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return err
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}
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func (d *DB) ListIPCA(limit int, from, to string) ([]IPCARecord, error) {
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where, args := marketWhere(from, to)
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query := fmt.Sprintf("SELECT id, date, monthly_rate, accumulated_12m FROM ipca_history %s ORDER BY date DESC LIMIT ?", where)
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args = append(args, limit)
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rows, err := d.Conn.Query(query, args...)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var out []IPCARecord
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for rows.Next() {
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var r IPCARecord
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rows.Scan(&r.ID, &r.Date, &r.MonthlyRate, &r.Accumulated12m)
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out = append(out, r)
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}
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return out, nil
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}
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func (d *DB) CurrentIPCA() (*IPCARecord, error) {
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r := &IPCARecord{}
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err := d.Conn.QueryRow("SELECT id, date, monthly_rate, accumulated_12m FROM ipca_history ORDER BY date DESC LIMIT 1").
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Scan(&r.ID, &r.Date, &r.MonthlyRate, &r.Accumulated12m)
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if err == sql.ErrNoRows {
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return nil, nil
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}
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return r, err
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}
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// FX
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func (d *DB) InsertFX(date, pair string, rate float64) error {
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_, err := d.Conn.Exec(`INSERT OR IGNORE INTO fx_rates (date, pair, rate) VALUES (?,?,?)`, date, pair, rate)
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return err
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}
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func (d *DB) ListFX(limit int, pair, from, to string) ([]FXRecord, error) {
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where := "WHERE 1=1"
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args := []any{}
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if pair != "" {
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where += " AND pair = ?"
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args = append(args, pair)
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}
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if from != "" {
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where += " AND date >= ?"
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args = append(args, from)
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}
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if to != "" {
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where += " AND date <= ?"
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args = append(args, to)
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}
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query := fmt.Sprintf("SELECT id, date, pair, rate FROM fx_rates %s ORDER BY date DESC LIMIT ?", where)
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args = append(args, limit)
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rows, err := d.Conn.Query(query, args...)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var out []FXRecord
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for rows.Next() {
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var r FXRecord
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rows.Scan(&r.ID, &r.Date, &r.Pair, &r.Rate)
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out = append(out, r)
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}
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return out, nil
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}
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func (d *DB) CurrentFX() ([]FXRecord, error) {
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rows, err := d.Conn.Query(`SELECT DISTINCT pair FROM fx_rates`)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var pairs []string
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for rows.Next() {
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var p string
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rows.Scan(&p)
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pairs = append(pairs, p)
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}
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var out []FXRecord
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for _, p := range pairs {
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var r FXRecord
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err := d.Conn.QueryRow("SELECT id, date, pair, rate FROM fx_rates WHERE pair = ? ORDER BY date DESC LIMIT 1", p).
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Scan(&r.ID, &r.Date, &r.Pair, &r.Rate)
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if err == nil {
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out = append(out, r)
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}
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}
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return out, nil
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}
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func marketWhere(from, to string) (string, []any) {
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where := "WHERE 1=1"
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args := []any{}
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if from != "" {
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where += " AND date >= ?"
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args = append(args, from)
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}
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if to != "" {
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where += " AND date <= ?"
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args = append(args, to)
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}
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return where, args
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}
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