[libvirt] [PATCH 3/9] New files to glue domain and storage together

[Daniel P. Berrange]

On Thu, Jan 31, 2013 at 02:11:28AM +0800, Osier Yang wrote:
> This creates src/conf/domain_storage.h and src/conf/storage_conf.c,
> which defines a driver contains internal APIs to glue the domain
> and storage. Currently there is only one API, translateDiskSourcePool,
> which is to translate the specified pool/volume into the the real
> underlying disk source. Later patch will implement API.
> ---
>  src/Makefile.am           |    3 ++-
>  src/conf/domain_storage.c |   44 ++++++++++++++++++++++++++++++++++++++++++++
>  src/conf/domain_storage.h |   37 +++++++++++++++++++++++++++++++++++++
>  src/libvirt_private.syms  |    4 ++++
>  4 files changed, 87 insertions(+), 1 deletions(-)
>  create mode 100644 src/conf/domain_storage.c
>  create mode 100644 src/conf/domain_storage.h
> 
> diff --git a/src/Makefile.am b/src/Makefile.am
> index 070a089..d664c48 100644
> --- a/src/Makefile.am
> +++ b/src/Makefile.am
> @@ -203,7 +203,8 @@ DOMAIN_CONF_SOURCES =						\
>  		conf/domain_conf.c conf/domain_conf.h		\
>  		conf/domain_audit.c conf/domain_audit.h		\
>  		conf/domain_nwfilter.c conf/domain_nwfilter.h	\
> -		conf/snapshot_conf.c conf/snapshot_conf.h
> +		conf/snapshot_conf.c conf/snapshot_conf.h	\
> +		conf/domain_storage.c conf/domain_storage.h
>  
>  DOMAIN_EVENT_SOURCES =						\
>  		conf/domain_event.c conf/domain_event.h
> diff --git a/src/conf/domain_storage.c b/src/conf/domain_storage.c
> new file mode 100644
> index 0000000..299e9fd
> --- /dev/null
> +++ b/src/conf/domain_storage.c
> @@ -0,0 +1,44 @@
> +/*
> + * domain_storage.c: Internal APIs to glue domain and storage
> + *
> + * Copyright (C) 2013 Red Hat, Inc.
> + *
> + * This library is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Lesser General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + *
> + * This library is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> + * Lesser General Public License for more details.
> + *
> + * You should have received a copy of the GNU Lesser General Public
> + * License along with this library.  If not, see
> + * <http://www.gnu.org/licenses/>.
> + *
> + * Author: Osier Yang <jyang at redhat.com>
> + */
> +
> +#include <config.h>
> +
> +#include "internal.h"
> +
> +#include "datatypes.h"
> +#include "domain_conf.h"
> +#include "domain_storage.h"
> +
> +static virDomainStorageDriverPtr domainStorageDriver;
> +
> +void
> +virRegisterDomainStorageDriver(virDomainStorageDriverPtr driver) {
> +    domainStorageDriver = driver;
> +}
> +
> +int
> +virDomainStorageTranslateDiskSourcePool(virConnectPtr conn,
> +                                        virDomainDefPtr def) {
> +    if (domainStorageDriver != NULL)
> +        return domainStorageDriver->translateDiskSourcePool(conn, def);
> +    return 0;
> +}


IMHO this abstraction is rather pointless. Just call virStoragePoolLookupbyUUID()
at the time you need to generate the CLI args, just as we do with the existing
<interface type='network'/>

Daniel
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