[Qemu-devel] [PATCH v4 0/4] scripts: qmp-shell: add transaction support

[John Snow <jsnow@redhat.com>]

The qmp-shell is a little rudimentary, but it can be hacked
to give us some transactional support without too much difficulty.

(1) Prep.
(2) Add support for serializing json arrays and
    improve the robustness of QMP parsing
(3) Add a special transaction( ... ) syntax that lets users
    build up transactional commands using the existing qmp shell
    syntax to define each action.
(4) Add a verbose flag to display generated QMP commands.

The parsing is not as robust as one would like, but this suffices
without adding a proper parser.

Design considerations:

(1) Try not to disrupt the existing design of the qmp-shell. The existing
    API is not disturbed.
(2) Pick a "magic token" such that it could not be confused for legitimate
    QMP/JSON syntax. Parentheses are used for this purpose.

For convenience, this branch is available at:
https://github.com/jnsnow/qemu.git branch qmp-shell++
This version is tagged qmp-shell++-v4.

===
v++
===

 - Use the AST to allow 'true', 'false' and 'null' within QMP expressions
 - Fix a bunch of stupid junk I broke in v2, apparently.

===
v3:
===

 - Folding in hotfix from list (import ast)

===
v2:
===

 - Squash patches 2 & 3:
 - Remove wholesale replacement of single quotes, in favor of try blocks
   that attempt to parse as pure JSON, then as Python.
 - Factored out the value parser block to accomplish the above.
 - Allow both true/True and false/False for values.
 - Fix typo in patch 3 cover letter. (was patch 4.)

John Snow (4):
  scripts: qmp-shell: refactor helpers
  scripts: qmp-shell: Expand support for QMP expressions
  scripts: qmp-shell: add transaction subshell
  scripts: qmp-shell: Add verbose flag

 scripts/qmp/qmp-shell | 147 +++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 116 insertions(+), 31 deletions(-)

-- 
2.1.0