[pve-devel] [PATCH common/http/guest-common/qemu-server v2] schema/config array support

Dominik Csapak d.csapak at proxmox.com
Tue Jun 6 10:39:07 CEST 2023

and removal of the '-alist' format

This series aims to implement array support for the api and
(section)config and remove the support for the (rarely used) '-alist'

currently sending arrays over the api (by sending a parameter multiple
times with form-urlencoded) results in the api call getting a \0
separated string, which it must split with e.g. split_list.

Instead, we want to simply specify an 'array' type for the api.

We only ever used '-alist' in two places:
* 'exclude-path' config/parameter for vzdump
* 'command' parameter for qemu guest agent exec via api (cli has it's
  own implementation with 'extra-args')

additionally, we (incidentally?) allowed the same format for the regular
'-list' formats, and the gui makes heavy use of this (iow. sending
arrays which get converted to \0 byte separated strings)

so we also auto-convert in some circumstances (which we want to
deprecate in a future version)

changes from v1:
* rebased on master
* incorporated feedback from wolfang
* added auto conversion of string <-> array in appropriate situations
* added tests for above
* omit applied manager patch

The dependcies/breaks are like this:

pve-http-server 1/2 is rather independent (did encounter this during
testing, and the current behaviour is imho wrong)

pve-guest-common depends on new (applied) pve-manager,
pve-http-server and pve-common 1/3

qemu-sever depends on pve-http-server and pve-common 1/3

pve-http-server does not technically break the older pve-guest-common
and qemu-server versions, but the parameters would need to be
encoded/sent differently than before (iow. the api user would have to
send the commands/paths \0 separated already instead of repeating the
parameters (form-urlencoded arrays))

pve-common 2/3 depend on all above

pve-common 3/3 depend on all above and it breaks every version that uses
an '-alist' format (so older pve-guest-common + qemu-server)

we can of course omit pve-common 3/3 and leave support in the
jsonschema, but imho it's really weird to use and has no real upsides
versus using simply an array type


Dominik Csapak (3):
  JSONSchema: add support for array parameter in api calls, cli and
  section config: implement array support
  JSONSchema: disable '-alist' format

 src/PVE/JSONSchema.pm       |  26 +++++-----
 src/PVE/RESTHandler.pm      |  61 ++++++++++++++++++----
 src/PVE/SectionConfig.pm    |  42 +++++++++++++--
 test/Makefile               |   9 +++-
 test/api_parameter_test.pl  | 100 ++++++++++++++++++++++++++++++++++++
 test/section_config_test.pl |  26 ++++++++++
 6 files changed, 237 insertions(+), 27 deletions(-)
 create mode 100755 test/api_parameter_test.pl


Dominik Csapak (2):
  proxy request: forward json content type and parameters
  use proper arrays for array parameter

 src/PVE/APIServer/AnyEvent.pm | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)


Dominik Csapak (1):
  vzdump: change 'exclude-path' from alist to an array format

 src/PVE/VZDump/Common.pm | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)


Dominik Csapak (1):
  api: switch agent api call to 'array' type

 PVE/API2/Qemu/Agent.pm | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)


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