[libvirt] [PATCH] vz: remove error logging from prlsdkUUIDParse

[Michal Privoznik]

On 21.09.2015 13:08, Maxim Nestratov wrote:
> From: Maxim Nestratov <mnestratov at virtuozzo.com>
> 
> As far as not every call of prlsdkUUIDParse assume correct UUID
> supplied, there is no use to complain about wrong format in it.
> Otherwise our log is flooded with false error messages.
> For instance, calling prlsdkUUIDParse from prlsdkEventsHandler
> works as a filter and in case of uuid absence for event issuer,
> we simply know that we shouldn't continue further processing.
> Instead of error logging for all calls we should explicitly take
> into accaunt where it is called from.
> 
> Signed-off-by: Maxim Nestratov <mnestratov at virtuozzo.com>
> ---
>  src/vz/vz_sdk.c |   11 +++++++----
>  1 files changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/src/vz/vz_sdk.c b/src/vz/vz_sdk.c
> index 744b58a..32ca1ef 100644
> --- a/src/vz/vz_sdk.c
> +++ b/src/vz/vz_sdk.c
> @@ -329,8 +329,6 @@ prlsdkUUIDParse(const char *uuidstr, unsigned char *uuid)
>  
>      /* trim curly braces */
>      if (virUUIDParse(tmp + 1, uuid) < 0) {
> -        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> -                       _("UUID in config file malformed"));
>          ret = -1;

This line is redundant too. I mean, @ret is already initialized to -1.

>          goto error;
>      }
> @@ -365,8 +363,11 @@ prlsdkGetDomainIds(PRL_HANDLE sdkdom,
>      PrlVmCfg_GetUuid(sdkdom, uuidstr, &len);
>      prlsdkCheckRetGoto(pret, error);
>  
> -    if (prlsdkUUIDParse(uuidstr, uuid) < 0)
> +    if (prlsdkUUIDParse(uuidstr, uuid) < 0) {
> +        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> +                       _("Domain UUID is malformed or empty"));
>          goto error;
> +    }

Hm. This will mask the original error. If, for instance, there's been an
OOM in prlsdkUUIDParse(), the error is overwritten with this generic
error message. Well, in either cases we don't want to continue anyway ...

>  
>      return 0;
>  
> @@ -1724,8 +1725,10 @@ prlsdkEventsHandler(PRL_HANDLE prlEvent, PRL_VOID_PTR opaque)
>      pret = PrlEvent_GetType(prlEvent, &prlEventType);
>      prlsdkCheckRetGoto(pret, cleanup);
>  
> -    if (prlsdkUUIDParse(uuidstr, uuid) < 0)
> +    if (prlsdkUUIDParse(uuidstr, uuid) < 0) {
> +        VIR_DEBUG("Skipping event type %d", prlEventType);
>          goto cleanup;
> +    }
>  
>      switch (prlEventType) {
>      case PET_DSP_EVT_VM_STATE_CHANGED:
> 


ACKed with the obvious fix and pushed.

Michal