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Avoid code which looks at local files when etcd is configured (#7144)

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This situation happens only in gateway nas which supports
etcd based `config.json` to support all FS mode features.

The issue was we would try to migrate something which doesn't
exist when etcd is configured which leads to inconsistent
server configs in memory.

This PR fixes this situation by properly loading config after
initialization, avoiding backend disk config migration to be
done only if etcd is not configured.
This commit is contained in:
Harshavardhana
2019-01-28 13:31:35 -08:00
committed by kannappanr
parent 526546d588
commit 0a28c28a8c
4 changed files with 29 additions and 33 deletions
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18
cmd/config-common.go
View File

@@ -103,16 +103,14 @@ func readConfigEtcd(ctx context.Context, client *etcd.Client, configFile string)
return nil, errConfigNotFound
}
// watchConfig - watches for changes on `configFile` on etcd and loads them.
func watchConfig(objAPI ObjectLayer, configFile string, loadCfgFn func(ObjectLayer) error) {
if globalEtcdClient != nil {
ctx, cancel := context.WithTimeout(context.Background(), defaultContextTimeout)
defer cancel()
for watchResp := range globalEtcdClient.Watch(ctx, configFile) {
for _, event := range watchResp.Events {
if event.IsModify() || event.IsCreate() {
loadCfgFn(objAPI)
}
// watchConfigEtcd - watches for changes on `configFile` on etcd and loads them.
func watchConfigEtcd(objAPI ObjectLayer, configFile string, loadCfgFn func(ObjectLayer) error) {
ctx, cancel := context.WithTimeout(context.Background(), defaultContextTimeout)
defer cancel()
for watchResp := range globalEtcdClient.Watch(ctx, configFile) {
for _, event := range watchResp.Events {
if event.IsModify() || event.IsCreate() {
loadCfgFn(objAPI)
}
}
}