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Re: [Qemu-devel] [PATCH v4 0/4] scripts: qmp-shell: add transaction supp
From: |
Luiz Capitulino |
Subject: |
Re: [Qemu-devel] [PATCH v4 0/4] scripts: qmp-shell: add transaction support |
Date: |
Fri, 8 May 2015 08:47:45 -0400 |
On Wed, 29 Apr 2015 15:14:00 -0400
John Snow <address@hidden> wrote:
> 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.
Applied to the qmp branch, thanks.
>
> ===
> 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(-)
>