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initialize rust logs via ffi #13

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initialize rust logs via ffi #13

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29 changes: 29 additions & 0 deletions ffiwrapper/logs.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,29 @@
package ffiwrapper

import (
"os"

"github.com/filecoin-project/filecoin-ffi/generated"
)

var logFile *os.File

func init() {
// get the go-log file via the GO_LOG_FILE env var
logFilePath, exists := os.LookupEnv("GOLOG_FILE")
if !exists {
return
}
// open the file, and get a fd that way
logFile, err := os.OpenFile(logFilePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
log.Errorw("failed to open log file", "error", err.Error(), "GOLOG_FILE", logFilePaht)
}
// once a fd has been procured, pass it to generated.FilInitLogFd
resp := generated.FilInitLogFd(int32(logFile.Fd()))
resp.Deref()

//TODO: figure out whether generated.FilDestoryInitLogFdResponse needs to be called
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Yes, generated.FilDestoryInitLogFdResponse() should be called, it just destroys the response, not the logging or file handler or so.

defer generated.FilDestroyInitLogFdResponse(resp)
//TODO: figure out how to close the file
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Good point. I haven't thought about a way to stop the logging to file, I expected to run "forever", which probably isn't a good idea.

}