53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
package cachedAPI
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import (
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"fmt"
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"git.sa.vin/legislature-tracker/backend/datastore"
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"io"
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"net/http"
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"time"
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)
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// This package behaves like an API but uses libSQL as a cache that gets checked before the actual API is called.
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type CachedAPI interface {
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Get(url string, cacheTTL time.Duration) (string, error)
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}
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type cachedAPI struct {
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mapper datastore.CacheStore
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}
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func NewCachedAPI(mapper datastore.CacheStore) CachedAPI {
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return &cachedAPI{
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mapper: mapper,
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}
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}
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func (c cachedAPI) Get(url string, cacheTTL time.Duration) (string, error) {
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response, found, err := c.mapper.CachedAPI(url)
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if err != nil {
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return "", fmt.Errorf("error getting cached API response: %w", err)
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}
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if found {
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return response, nil
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}
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// Call the actual API
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resp, err := http.Get(url)
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if err != nil {
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return "", fmt.Errorf("error calling API: %w", err)
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}
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defer resp.Body.Close()
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// Read the response
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bodyBytes, err := io.ReadAll(resp.Body)
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if err != nil {
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return "", fmt.Errorf("error reading API response: %w", err)
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}
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// Save the response to the cache
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err = c.mapper.SaveAPIResponse(url, string(bodyBytes), cacheTTL)
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if err != nil {
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return "", fmt.Errorf("error saving API response: %w", err)
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}
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return string(bodyBytes), nil
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}
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