(bug) Google cloud storage retriever only gets the file in the first attempt

[jferrl]

Observed behavior

It was not possible to use an instance of gcstorageretriever.Retriever{} since it is only able to get the file on the initial bootstrap of go-feature-flag instance. After feature flag client is up and running, the internal flags cache is no longer updated when gcstorageretriever is used.

Expected Behavior

gcstorageretriever.Retriever{} should be able to the flags when the file stored in google cloud storage changes.

Steps to reproduce

Using the following code(just an exaple):

ffcli, err := ffclient.New(ffclient.Config{
  PollingInterval: 3 * time.Second,
  Retriever: &gcstorageretriever.Retriever{
      Options: []option.ClientOption{option.WithoutAuthentication()},
  Bucket: "my-bucket",
  Object: "flags.yaml",
  }
})
defer ffcli.Close()

After the bootstrap, we are able to get current flags data, for example using the following func:

flags := ffcli.AllFlagsState(user)

But, if the file is updated in google cloud storage, go-feature-flag is not able to retrieve the current config.

Moreover, We can see several log traces that refer to the following line of code(saying file not found)

fmt.Errorf("unable to read from GCP Object %s in Bucket %s, error: %s", retriever.Bucket, retriever.Object, err)

[thomaspoignant]

@jferrl thanks for reporting this issue.

I am sorry that it is not working as expected 😓
I am currently on PTO so I am not able to check this before next week.

In the mean time if you want to work on resolving this issue it will be much appreciated.

[jferrl]

@jferrl thanks for reporting this issue.

I am sorry that it is not working as expected 😓 I am currently on PTO so I am not able to check this before next week.

In the mean time if you want to work on resolving this issue it will be much appreciated.

No worries! I'm working on the fix!
Thanks! 😄

[thomaspoignant]

Resolved by #311