Hi On Tue, Mar 17, 2020 at 12:55 PM Markus Armbruster <armbru@xxxxxxxxxx> wrote: > > This series extends QMP introspection to cover deprecation. > Additionally, new option -compat lets you configure what to do when > deprecated interfaces get used. This is intended for testing users of > the management interfaces. It is experimental. > > -compat deprecated-input=<in-policy> configures what to do when > deprecated input is received. Available policies: > > * accept: Accept deprecated commands and arguments (default) > * reject: Reject them > * crash: Crash > > -compat deprecated-output=<out-policy> configures what to do when > deprecated output is sent. Available output policies: > > * accept: Emit deprecated command results and events (default) > * hide: Suppress them > > For now, -compat covers only deprecated syntactic aspects of QMP. We > may want to extend it to cover semantic aspects, CLI, and experimental > features. I suggest to use a qmp- prefix for qmp-related policies. > PATCH 01-04: Documentation fixes > PATCH 05-10: Test improvements > PATCH 11-24: Add feature flags to remaining user-defined types and to > struct members > PATCH 25-26: New special feature 'deprecated', visible in > introspection > PATCH 27-34: New -compat to set policy for handling stuff marked with > feature 'deprecated' > > v4: > PATCH 05+07: Temporary memory leak plugged [Marc-André] > PATCH 23: Rewritten [Marc-André] > PATCH 24: Comment typo [Marc-André] > PATCH 30: Memory leaks plugged > > v3: > * Rebased, non-trivial conflicts in PATCH 01+26+27+34 due to RST > conversion and code motion > * PATCH 28-29: Old PATCH 28 split up to ease review > * PATCH 30-31: New > * PATCH 32-33: Old PATCH 29 split up to ease review > > Comparison to RFC (24 Oct 2019): > * Cover arguments and results in addition to commands and events > * Half-baked "[RFC PATCH 18/19] qapi: Include a warning in the > response to a deprecated command" dropped > > See also last item of > Subject: Minutes of KVM Forum BoF on deprecating stuff > Date: Fri, 26 Oct 2018 16:03:51 +0200 > Message-ID: <87mur0ls8o.fsf@xxxxxxxxxxxxxxxxxx> > https://lists.nongnu.org/archive/html/qemu-devel/2018-10/msg05828.html > > Cc: Lukáš Doktor <ldoktor@xxxxxxxxxx> > Cc: libguestfs@xxxxxxxxxx > Cc: libvir-list@xxxxxxxxxx > Cc: Daniel P. Berrange <berrange@xxxxxxxxxx> > Cc: Peter Krempa <pkrempa@xxxxxxxxxx> > Cc: Kevin Wolf <kwolf@xxxxxxxxxx> > > Markus Armbruster (34): > qemu-doc: Belatedly document QMP command arg & result deprecation > qapi: Belatedly update doc comment for @wait deprecation > docs/devel/qapi-code-gen: Clarify allow-oob introspection > docs/devel/qapi-code-gen: Document 'features' introspection > tests/test-qmp-cmds: Factor out qmp_dispatch() test helpers > tests/test-qmp-cmds: Check responses more thoroughly > tests/test-qmp-cmds: Simplify test data setup > tests/test-qmp-event: Simplify test data setup > tests/test-qmp-event: Use qobject_is_equal() > tests/test-qmp-event: Check event is actually emitted > qapi/schema: Clean up around QAPISchemaEntity.connect_doc() > qapi: Add feature flags to remaining definitions > qapi: Consistently put @features parameter right after @ifcond > qapi/introspect: Rename *qlit* to reduce confusion > qapi/introspect: Factor out _make_tree() > qapi/schema: Change _make_features() to a take feature list > qapi/schema: Reorder classes so related ones are together > qapi/schema: Rename QAPISchemaObjectType{Variant,Variants} > qapi/schema: Call QAPIDoc.connect_member() in just one place > qapi: Add feature flags to struct members > qapi: Inline do_qmp_dispatch() into qmp_dispatch() > qapi: Simplify how qmp_dispatch() deals with QCO_NO_SUCCESS_RESP > qapi: Simplify how qmp_dispatch() gets the request ID > qapi: Replace qmp_dispatch()'s TODO comment by an explanation > qapi: New special feature flag "deprecated" > qapi: Mark deprecated QMP parts with feature 'deprecated' > qemu-options: New -compat to set policy for deprecated interfaces > qapi: Implement deprecated-output=hide for QMP command results > qapi: Implement deprecated-output=hide for QMP events > qapi: Implement deprecated-output=hide for QMP event data > qapi: Implement deprecated-output=hide for QMP introspection > qapi: Implement deprecated-input=reject for QMP commands > qapi: Implement deprecated-input=reject for QMP command arguments > qapi: New -compat deprecated-input=crash > > docs/devel/qapi-code-gen.txt | 79 ++- > docs/system/deprecated.rst | 48 +- > tests/qapi-schema/doc-good.texi | 32 ++ > qapi/block-core.json | 48 +- > qapi/block.json | 30 +- > qapi/char.json | 1 + > qapi/compat.json | 52 ++ > qapi/control.json | 11 +- > qapi/introspect.json | 28 +- > qapi/machine.json | 34 +- > qapi/migration.json | 36 +- > qapi/misc.json | 13 +- > qapi/qapi-schema.json | 1 + > include/qapi/compat-policy.h | 20 + > include/qapi/qmp/dispatch.h | 1 + > include/qapi/qobject-input-visitor.h | 9 + > include/qapi/qobject-output-visitor.h | 9 + > include/qapi/visitor-impl.h | 3 + > include/qapi/visitor.h | 9 + > monitor/monitor-internal.h | 3 - > monitor/misc.c | 2 - > monitor/qmp-cmds-control.c | 102 +++- > qapi/qapi-visit-core.c | 9 + > qapi/qmp-dispatch.c | 149 +++--- > qapi/qobject-input-visitor.c | 29 ++ > qapi/qobject-output-visitor.c | 20 + > qemu-storage-daemon.c | 2 - > softmmu/vl.c | 17 + > tests/test-qmp-cmds.c | 249 +++++---- > tests/test-qmp-event.c | 203 +++----- > qapi/Makefile.objs | 8 +- > qapi/trace-events | 1 + > qemu-options.hx | 22 + > scripts/qapi/commands.py | 20 +- > scripts/qapi/doc.py | 16 +- > scripts/qapi/events.py | 24 +- > scripts/qapi/expr.py | 14 +- > scripts/qapi/introspect.py | 104 ++-- > scripts/qapi/schema.py | 488 ++++++++++-------- > scripts/qapi/types.py | 8 +- > scripts/qapi/visit.py | 28 +- > tests/Makefile.include | 1 + > tests/qapi-schema/alternate-base.err | 2 +- > tests/qapi-schema/doc-good.json | 22 +- > tests/qapi-schema/doc-good.out | 18 + > .../qapi-schema/features-deprecated-type.err | 2 + > .../qapi-schema/features-deprecated-type.json | 3 + > .../qapi-schema/features-deprecated-type.out | 0 > tests/qapi-schema/qapi-schema-test.json | 51 +- > tests/qapi-schema/qapi-schema-test.out | 48 +- > tests/qapi-schema/test-qapi.py | 26 +- > 51 files changed, 1393 insertions(+), 762 deletions(-) > create mode 100644 qapi/compat.json > create mode 100644 include/qapi/compat-policy.h > create mode 100644 tests/qapi-schema/features-deprecated-type.err > create mode 100644 tests/qapi-schema/features-deprecated-type.json > create mode 100644 tests/qapi-schema/features-deprecated-type.out > > -- > 2.21.1 > -- Marc-André Lureau
