fix: Do not fail analysis if node list does not exist (#1678)

* fix: Do not error if node list does not exist

Signed-off-by: Evans Mungai <evans@replicated.com>

* fix test fail

---------

Signed-off-by: Evans Mungai <evans@replicated.com>
Co-authored-by: Dexter Yan <yanshaocong@gmail.com>

pkg/analyze/collected_contents.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/pkg/errors"
 	"github.com/replicatedhq/troubleshoot/pkg/constants"
+	"github.com/replicatedhq/troubleshoot/pkg/types"
 )
 
 type collectedContent struct {
@@ -33,6 +34,9 @@ func retrieveCollectedContents(
 	// Local data not available, move to remote collection
 	nodeListContents, err := getCollectedFileContents(constants.NODE_LIST_FILE)
 	if err != nil {
+		if _, ok := err.(*types.NotFoundError); ok {
+			return collectedContents, nil
+		}
 		return nil, errors.Wrap(err, "failed to get node list")
 	}
 

pkg/analyze/collected_contents_test.go

@@ -78,7 +78,7 @@ func TestRetrieveCollectedContents(t *testing.T) {
 			remoteNodeBaseDir: "remoteBaseDir",
 			remoteFileName:    "remoteFileName",
 			expectedResult:    nil,
-			expectedError:     "failed to get node list",
+			expectedError:     "",
 		},
 		{
 			name: "fail to retrieve content for one of the nodes",

pkg/supportbundle/parse.go

@@ -103,7 +103,7 @@ func getPodDetailsFromFiles(files map[string][]byte, podNamespace string, podNam
 
 // GetFilesContents will return the file contents for filenames matching the filenames parameter.
 func GetFilesContents(bundleArchive string, filenames []string) (map[string][]byte, error) {
-	bundleDir, err := ioutil.TempDir("", "troubleshoot")
+	bundleDir, err := os.MkdirTemp("", "troubleshoot")
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to create tmp dir")
 	}