From e4b6421786e15cf2a59f544c0a69d2070bdd781e Mon Sep 17 00:00:00 2001
From: Michael Nguyen <mnguyen@redhat.com>
Date: Fri, 19 Jul 2019 13:55:14 -0400
Subject: [PATCH] plume: handle non-existent fcos releases.json

Use an empty json instead of failing when there is no releases.json
---
 cmd/plume/release.go | 28 +++++++++++++++++++---------
 1 file changed, 19 insertions(+), 9 deletions(-)

diff --git a/cmd/plume/release.go b/cmd/plume/release.go
index b5e8be710..cb1115ab5 100644
--- a/cmd/plume/release.go
+++ b/cmd/plume/release.go
@@ -26,6 +26,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/aws/aws-sdk-go/aws/awserr"
 	"github.com/spf13/cobra"
 	"golang.org/x/net/context"
 	"google.golang.org/api/compute/v1"
@@ -492,16 +493,25 @@ func modifyReleaseMetadataIndex(spec *fcosChannelSpec, commitId string) {
 	}
 
 	path := filepath.Join("prod", "streams", specChannel, "releases.json")
-
-	f, err := api.DownloadFile(spec.Bucket, path)
-	if err != nil {
-		plog.Fatalf("downloading release metadata index: %v", err)
-	}
-	defer f.Close()
-
-	data, err := ioutil.ReadAll(f)
+	data, err := func() ([]byte, error) {
+		f, err := api.DownloadFile(spec.Bucket, path)
+		if err != nil {
+			if awsErr, ok := err.(awserr.Error); ok {
+				if awsErr.Code() == "NoSuchKey" {
+					return []byte("{}"), nil
+				}
+			}
+			return []byte{}, fmt.Errorf("downloading release metadata index: %v", err)
+		}
+		defer f.Close()
+		d, err := ioutil.ReadAll(f)
+		if err != nil {
+			return []byte{}, fmt.Errorf("reading release metadata index: %v", err)
+		}
+		return d, nil
+	}()
 	if err != nil {
-		plog.Fatalf("reading release metadata index: %v", err)
+		plog.Fatal(err)
 	}
 
 	var m ReleaseMetadata