feat: handle warning error from api requests

Signed-off-by: Matt Gleich <[email protected]>

internal/apis/request.go

@@ -2,13 +2,16 @@ package apis
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"net/http"
 
 	"github.com/gleich/lumber/v3"
 )
 
+var WarningError = errors.New("Warning error when trying to make request. Ignore error.")
+
 // sends a given http.Request and will unmarshal the JSON from the response body and return that as the given type.
 func SendRequest[T any](req *http.Request) (T, error) {
 	var zeroValue T // to be used as "nil" when returning errors
@@ -34,6 +37,7 @@ func SendRequest[T any](req *http.Request) (T, error) {
 			resp.StatusCode == http.StatusGatewayTimeout ||
 			resp.StatusCode == http.StatusInternalServerError {
 			lumber.Warning(err)
+			return zeroValue, WarningError
 		} else {
 			lumber.Error(err)
 		}

internal/cache/cache.go

@@ -9,6 +9,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/gleich/lcp-v2/internal/apis"
 	"github.com/gleich/lcp-v2/internal/metrics"
 	"github.com/gleich/lcp-v2/internal/secrets"
 	"github.com/gleich/lumber/v3"
@@ -100,7 +101,7 @@ func (c *Cache[T]) StartPeriodicUpdate(updateFunc func() (T, error), interval ti
 	defer ticker.Stop()
 	for range ticker.C {
 		data, err := updateFunc()
-		if err != nil {
+		if err != nil && err != apis.WarningError {
 			lumber.Error(err, "updating", c.name, "cache failed")
 			continue
 		}