influx -import outputs to stderr on success.

[gambrose]

Bug report

System info: influxdb-1.3.5_windows_amd64

Steps to reproduce:

1. curl https://s3.amazonaws.com/noaa.water-database/NOAA_data.txt -o NOAA_data.txt
2. influx -import -path=NOAA_data.txt -precision=s -database=NOAA_water_database

Expected behavior: Outputed to stdout

2017/09/14 22:53:20 Processed 1 commands
2017/09/14 22:53:20 Processed 76290 inserts
2017/09/14 22:53:20 Failed 0 inserts

Actual behavior: Outputed to stderr

2017/09/14 22:53:20 Processed 1 commands
2017/09/14 22:53:20 Processed 76290 inserts
2017/09/14 22:53:20 Failed 0 inserts

Additional info:

Logging to stderr makes PowerShell think the command failed when it didn't

influx -import -path NOAA_data.txt -precision s

influx : 2017/09/14 23:05:10 Processed 1 commands
At line:1 char:1
+ influx -import -path NOAA_data.txt -precision s
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (2017/09/14 23:05:10 Processed 1 commands:String) [], RemoteException
    + FullyQualifiedErrorId : NativeCommandError
 
2017/09/14 23:05:10 Processed 76290 inserts
2017/09/14 23:05:10 Failed 0 inserts

[e-dard]

@gambrose the importer uses Go's standard log.Logger, which by default emits its output to stderr.

I think I agree with you that there should be a better separation there. I'll put up a PR to use stderr and stdout appropriately.

[gambrose]

Thanks @e-dard looks good to me. 👍