On 17.10.19 15:02, Kevin Wolf wrote:
> This adds and parses the --monitor option, so that a QMP monitor can be
> used in the storage daemon. The monitor offers commands defined in the
> QAPI schema at storage-daemon/qapi/qapi-schema.json.
> 
> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
> ---
>  storage-daemon/qapi/qapi-schema.json | 15 ++++++++++++
>  qemu-storage-daemon.c                | 34 ++++++++++++++++++++++++++++
>  Makefile                             | 30 ++++++++++++++++++++++++
>  Makefile.objs                        |  4 ++--
>  monitor/Makefile.objs                |  2 ++
>  qapi/Makefile.objs                   |  5 ++++
>  qom/Makefile.objs                    |  1 +
>  scripts/qapi/gen.py                  |  5 ++++
>  storage-daemon/Makefile.objs         |  1 +
>  storage-daemon/qapi/Makefile.objs    |  1 +
>  10 files changed, 96 insertions(+), 2 deletions(-)
>  create mode 100644 storage-daemon/qapi/qapi-schema.json
>  create mode 100644 storage-daemon/Makefile.objs
>  create mode 100644 storage-daemon/qapi/Makefile.objs

[...]

> diff --git a/qapi/Makefile.objs b/qapi/Makefile.objs
> index 3e04e299ed..03d256f0a4 100644
> --- a/qapi/Makefile.objs
> +++ b/qapi/Makefile.objs
> @@ -30,3 +30,8 @@ obj-y += $(QAPI_TARGET_MODULES:%=qapi-events-%.o)
>  obj-y += qapi-events.o
>  obj-y += $(QAPI_TARGET_MODULES:%=qapi-commands-%.o)
>  obj-y += qapi-commands.o
> +
> +QAPI_MODULES_STORAGE_DAEMON = block block-core char common crypto introspect
> +QAPI_MODULES_STORAGE_DAEMON += job monitor qom sockets pragma transaction

I took a look into the rest, and I wonder whether query-iothreads from
misc.json would be useful, too.

> diff --git a/scripts/qapi/gen.py b/scripts/qapi/gen.py
> index 796c17c38a..c25634f673 100644
> --- a/scripts/qapi/gen.py
> +++ b/scripts/qapi/gen.py
> @@ -44,6 +44,11 @@ class QAPIGen(object):
>          return ''
>  
>      def write(self, output_dir):
> +        # Include paths starting with ../ are used to reuse modules of the main
> +        # schema in specialised schemas. Don't overwrite the files that are
> +        # already generated for the main schema.
> +        if self.fname.startswith('../'):
> +            return

Sorry, but I’m about to ask a clueless question: How do we ensure that
the main schema is generated before something else could make sure of
the specialized schemas?

Max

>          pathname = os.path.join(output_dir, self.fname)
>          dir = os.path.dirname(pathname)
>          if dir: