29 lines
694 B
Go
29 lines
694 B
Go
package rate
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import (
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"context"
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"fmt"
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"os/exec"
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"strconv"
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"strings"
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"time"
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)
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func query(amount float64, base, quote string) (string, error) {
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ctx, cancel := context.WithTimeout(context.Background(), 190*time.Second)
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defer cancel()
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cmd := exec.CommandContext(ctx, "python3", "scripts/rate_query.py", strconv.FormatFloat(amount, 'f', -1, 64), base, quote)
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out, err := cmd.Output()
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if ctx.Err() == context.DeadlineExceeded {
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return "", fmt.Errorf("汇率服务超时，请稍后重试")
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}
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if err != nil {
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return "", fmt.Errorf("汇率查询失败")
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}
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text := strings.TrimSpace(string(out))
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if text == "" {
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return "", fmt.Errorf("未获取到汇率")
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}
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return text, nil
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}
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