/
combined.go
69 lines (62 loc) · 1.27 KB
/
combined.go
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package store
import (
"time"
)
type Combined struct {
sources []Source
}
func (c *Combined) Quote(symbol string) (*Candle, error) {
var (
candle *Candle
lastErr error
)
for _, source := range c.sources {
candle, lastErr = source.Quote(symbol)
if lastErr == nil {
return candle, nil
}
}
return nil, lastErr
}
func (c *Combined) Candles(res Resolution, symbol string, from, to time.Time) ([]*Candle, error) {
var (
candles []*Candle
lastErr error
)
for _, source := range c.sources {
candles, lastErr = source.Candles(res, symbol, from, to)
if lastErr == nil {
return candles, nil
}
}
return nil, lastErr
}
func (c *Combined) Peers(symbol string) ([]string, error) {
var (
peers []string
lastErr error
)
for _, source := range c.sources {
peers, lastErr = source.Peers(symbol)
if lastErr == nil {
return peers, nil
}
}
return nil, lastErr
}
func (c *Combined) RecommendationTrends(symbol string) (*RecommendationTrends, error) {
var (
trend *RecommendationTrends
lastErr error
)
for _, source := range c.sources {
trend, lastErr = source.RecommendationTrends(symbol)
if lastErr == nil {
return trend, nil
}
}
return nil, lastErr
}
func NewCombined(source ...Source) Source {
return &Combined{sources: source}
}