qemu/qapi/common.json
Eric Blake f22a28b898 qapi: Add alias for ErrorClass
The qapi enum ErrorClass is unusual that it uses 'CamelCase' names,
contrary to our documented convention of preferring 'lower-case'.
However, this enum is entrenched in the API; we cannot change
what strings QMP outputs.  Meanwhile, we want to simplify how
c_enum_const() is used to generate enum constants, by moving away
from the heuristics of camel_to_upper() to a more straightforward
c_name(N).upper() - but doing so will rename all of the ErrorClass
constants and cause churn to all client files, where the new names
are aesthetically less pleasing (ERROR_CLASS_DEVICENOTFOUND looks
like we can't make up our minds on whether to break between words).

So as always in computer science, solve the problem by some more
indirection: rename the qapi type to QapiErrorClass, and add a
new enum ErrorClass in error.h whose members are aliases of the
qapi type, but with the spelling expected elsewhere in the tree.
Then, when c_enum_const() changes the munging, we only have to
adjust the one alias spot.

Suggested by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1447836791-369-26-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2015-12-17 08:21:28 +01:00

118 lines
2.8 KiB
Python

# -*- Mode: Python -*-
#
# QAPI common definitions
##
# @QapiErrorClass
#
# QEMU error classes
#
# @GenericError: this is used for errors that don't require a specific error
# class. This should be the default case for most errors
#
# @CommandNotFound: the requested command has not been found
#
# @DeviceEncrypted: the requested operation can't be fulfilled because the
# selected device is encrypted
#
# @DeviceNotActive: a device has failed to be become active
#
# @DeviceNotFound: the requested device has not been found
#
# @KVMMissingCap: the requested operation can't be fulfilled because a
# required KVM capability is missing
#
# Since: 1.2
##
{ 'enum': 'QapiErrorClass',
# Keep this in sync with ErrorClass in error.h
'data': [ 'GenericError', 'CommandNotFound', 'DeviceEncrypted',
'DeviceNotActive', 'DeviceNotFound', 'KVMMissingCap' ] }
##
# @VersionTriple
#
# A three-part version number.
#
# @qemu.major: The major version number.
#
# @qemu.minor: The minor version number.
#
# @qemu.micro: The micro version number.
#
# Since: 2.4
##
{ 'struct': 'VersionTriple',
'data': {'major': 'int', 'minor': 'int', 'micro': 'int'} }
##
# @VersionInfo:
#
# A description of QEMU's version.
#
# @qemu: The version of QEMU. By current convention, a micro
# version of 50 signifies a development branch. A micro version
# greater than or equal to 90 signifies a release candidate for
# the next minor version. A micro version of less than 50
# signifies a stable release.
#
# @package: QEMU will always set this field to an empty string. Downstream
# versions of QEMU should set this to a non-empty string. The
# exact format depends on the downstream however it highly
# recommended that a unique name is used.
#
# Since: 0.14.0
##
{ 'struct': 'VersionInfo',
'data': {'qemu': 'VersionTriple', 'package': 'str'} }
##
# @query-version:
#
# Returns the current version of QEMU.
#
# Returns: A @VersionInfo object describing the current version of QEMU.
#
# Since: 0.14.0
##
{ 'command': 'query-version', 'returns': 'VersionInfo' }
##
# @CommandInfo:
#
# Information about a QMP command
#
# @name: The command name
#
# Since: 0.14.0
##
{ 'struct': 'CommandInfo', 'data': {'name': 'str'} }
##
# @query-commands:
#
# Return a list of supported QMP commands by this server
#
# Returns: A list of @CommandInfo for all supported commands
#
# Since: 0.14.0
##
{ 'command': 'query-commands', 'returns': ['CommandInfo'] }
##
# @OnOffAuto
#
# An enumeration of three options: on, off, and auto
#
# @auto: QEMU selects the value between on and off
#
# @on: Enabled
#
# @off: Disabled
#
# Since: 2.2
##
{ 'enum': 'OnOffAuto',
'data': [ 'auto', 'on', 'off' ] }