freeznet commented on a change in pull request #4746: [go function] fix: go
function should parse conf content first
URL: https://github.com/apache/pulsar/pull/4746#discussion_r305207583
##########
File path: pulsar-function-go/conf/conf.go
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@@ -80,14 +80,34 @@ var (
confContent string
)
+func fileExists(path string) bool {
+ if path == "" {
+ return false
+ }
+ _, err := os.Stat(path)
+ if err != nil && os.IsNotExist(err) {
Review comment:
after some doc reading, seems `os.Stat` check is redundant because
`ioutil.ReadFile` did the same thing. The previous error is because we handle
`ioutil.ReadFile` incorrect, so I did some change to the code, removed
`fileExists` func, `Unmarshal` the yaml file only if `ioutil.ReadFile` returns
no error. Also, if we use `os.Stat`, there might be some extreme condition that
the file will have been changed between `os.Stat` and `ioutil.ReadFile` (ref:
https://groups.google.com/forum/#!msg/golang-nuts/Ayx-BMNdMFo/4rL8FFHr8v4J)
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