Re: [PATCH v2 06/12] migration: refactor: introduce params version of unmanaged

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On 09/10/2015 09:20 AM, Nikolay Shirokovskiy wrote:
> Let's put main functionality into params version of virDomainMigrateUnmanaged
> as a preparation step for merging it with virDomainMigratePeer2PeerParams.
> virDomainMigrateUnmanaged then does nothing more then just adapting arguments.
> 
> Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@xxxxxxxxxxxxx>
> ---
>  src/libvirt-domain.c |   90 ++++++++++++++++++++++++++++++++-----------------
>  1 files changed, 59 insertions(+), 31 deletions(-)
> 

This patch introduces virDomainMigrateUnmanagedParams and makes
virDomainMigrateUnmanaged a shim to make the call.

Things seem reasonable here w/r/t code motion. Here Coverity is "OK"
with the NULL in dconnuri because it's directly tied to the same "if
(flags & VIR_MIGRATE_PEER2PEER)" check.

John

> diff --git a/src/libvirt-domain.c b/src/libvirt-domain.c
> index 1631944..79ed9f8 100644
> --- a/src/libvirt-domain.c
> +++ b/src/libvirt-domain.c
> @@ -3339,21 +3339,32 @@ virDomainMigratePeer2PeerParams(virDomainPtr domain,
>  }
>  
>  static int
> -virDomainMigrateUnmanaged(virDomainPtr domain,
> -                          const char *xmlin,
> -                          unsigned int flags,
> -                          const char *dname,
> -                          const char *dconnuri,
> -                          const char *miguri,
> -                          unsigned long long bandwidth)
> +virDomainMigrateUnmanagedParams(virDomainPtr domain,
> +                                const char *dconnuri,
> +                                virTypedParameterPtr params,
> +                                int nparams,
> +                                unsigned int flags)
>  {
>      const char *uri = NULL;
> +    const char *miguri = NULL;
> +    const char *dname = NULL;
> +    const char *xmlin = NULL;
> +    unsigned long long bandwidth = 0;
>  
> -    VIR_DOMAIN_DEBUG(domain,
> -                     "dconnuri=%s, xmlin=%s, dname=%s, miguri=%s, bandwidth=%llu "
> -                     "flags=%x",
> -                     dconnuri, NULLSTR(xmlin), NULLSTR(dname), NULLSTR(miguri),
> -                     bandwidth, flags);
> +    if (virTypedParamsGetString(params, nparams,
> +                                VIR_MIGRATE_PARAM_URI, &miguri) < 0 ||
> +        virTypedParamsGetString(params, nparams,
> +                                VIR_MIGRATE_PARAM_DEST_NAME, &dname) < 0 ||
> +        virTypedParamsGetString(params, nparams,
> +                                VIR_MIGRATE_PARAM_DEST_XML, &xmlin) < 0 ||
> +        virTypedParamsGetULLong(params, nparams,
> +                                VIR_MIGRATE_PARAM_BANDWIDTH, &bandwidth) < 0) {
> +        return -1;
> +    }
> +
> +    VIR_DOMAIN_DEBUG(domain, "dconnuri=%s, params=%p, nparams=%d, flags=%x",
> +                     dconnuri, params, nparams, flags);
> +    VIR_TYPED_PARAMS_DEBUG(params, nparams);
>  
>      if ((flags & VIR_MIGRATE_PEER2PEER) && virDomainMigrateCheckNotLocal(dconnuri) < 0)
>          return -1;
> @@ -3395,6 +3406,38 @@ virDomainMigrateUnmanaged(virDomainPtr domain,
>      }
>  }
>  
> +static int
> +virDomainMigrateUnmanaged(virDomainPtr domain,
> +                          const char *xmlin,
> +                          unsigned int flags,
> +                          const char *dname,
> +                          const char *dconnuri,
> +                          const char *miguri,
> +                          unsigned long long bandwidth)
> +{
> +    int ret = -1;
> +    virTypedParameterPtr params = NULL;
> +    int nparams = 0;
> +    int maxparams = 0;
> +
> +    if (virTypedParamsAddString(&params, &nparams, &maxparams,
> +                                VIR_MIGRATE_PARAM_URI, miguri) < 0 ||
> +        virTypedParamsAddString(&params, &nparams, &maxparams,
> +                                VIR_MIGRATE_PARAM_DEST_NAME, dname) < 0 ||
> +        virTypedParamsAddString(&params, &nparams, &maxparams,
> +                                VIR_MIGRATE_PARAM_DEST_XML, xmlin) < 0 ||
> +        virTypedParamsAddULLong(&params, &nparams, &maxparams,
> +                                VIR_MIGRATE_PARAM_BANDWIDTH, bandwidth) < 0)
> +        goto cleanup;
> +
> +    ret = virDomainMigrateUnmanagedParams(domain, dconnuri, params, nparams, flags);
> +
> + cleanup:
> +    virTypedParamsFree(params, nparams);
> +
> +    return ret;
> +}
> +
>  /**
>   * virDomainMigrate:
>   * @domain: a domain object
> @@ -4361,10 +4404,6 @@ virDomainMigrateToURI3(virDomainPtr domain,
>                                     VIR_MIGRATE_PARAM_DEST_NAME,
>                                     VIR_MIGRATE_PARAM_DEST_XML,
>                                     VIR_MIGRATE_PARAM_BANDWIDTH };
> -    const char *uri = NULL;
> -    const char *dname = NULL;
> -    const char *dxml = NULL;
> -    unsigned long long bandwidth = 0;
>  
>      VIR_DOMAIN_DEBUG(domain, "dconnuri=%s, params=%p, nparms=%u flags=%x",
>                       NULLSTR(dconnuri), params, nparams, flags);
> @@ -4383,17 +4422,6 @@ virDomainMigrateToURI3(virDomainPtr domain,
>      compat = virTypedParamsCheck(params, nparams, compatParams,
>                                   ARRAY_CARDINALITY(compatParams));
>  
> -    if (virTypedParamsGetString(params, nparams,
> -                                VIR_MIGRATE_PARAM_URI, &uri) < 0 ||
> -        virTypedParamsGetString(params, nparams,
> -                                VIR_MIGRATE_PARAM_DEST_NAME, &dname) < 0 ||
> -        virTypedParamsGetString(params, nparams,
> -                                VIR_MIGRATE_PARAM_DEST_XML, &dxml) < 0 ||
> -        virTypedParamsGetULLong(params, nparams,
> -                                VIR_MIGRATE_PARAM_BANDWIDTH, &bandwidth) < 0) {
> -        goto error;
> -    }
> -
>      if (flags & VIR_MIGRATE_PEER2PEER) {
>          if (!VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
>                                        VIR_DRV_FEATURE_MIGRATION_P2P)) {
> @@ -4411,8 +4439,8 @@ virDomainMigrateToURI3(virDomainPtr domain,
>                  goto error;
>          } else if (compat) {
>              VIR_DEBUG("Using peer2peer migration");
> -            if (virDomainMigrateUnmanaged(domain, dxml, flags, dname,
> -                                          dconnuri, uri, bandwidth) < 0)
> +            if (virDomainMigrateUnmanagedParams(domain, dconnuri, params,
> +                                                nparams, flags) < 0)
>                  goto error;
>          } else {
>              virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
> @@ -4439,8 +4467,8 @@ virDomainMigrateToURI3(virDomainPtr domain,
>          }
>  
>          VIR_DEBUG("Using direct migration");
> -        if (virDomainMigrateUnmanaged(domain, dxml, flags,
> -                                   dname, NULL, uri, bandwidth) < 0)
> +        if (virDomainMigrateUnmanagedParams(domain, NULL, params,
> +                                            nparams, flags) < 0)
>              goto error;
>      }
>  
> 

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