From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55747) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1absr9-000187-IM for qemu-devel@nongnu.org; Fri, 04 Mar 2016 11:45:37 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1absr6-0005Z0-0N for qemu-devel@nongnu.org; Fri, 04 Mar 2016 11:45:35 -0500 Received: from mx1.redhat.com ([209.132.183.28]:55675) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1absr5-0005Yo-PM for qemu-devel@nongnu.org; Fri, 04 Mar 2016 11:45:31 -0500 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) by mx1.redhat.com (Postfix) with ESMTPS id 6518B64D29 for ; Fri, 4 Mar 2016 16:45:31 +0000 (UTC) From: Markus Armbruster Date: Fri, 4 Mar 2016 17:45:17 +0100 Message-Id: <1457109928-4881-2-git-send-email-armbru@redhat.com> In-Reply-To: <1457109928-4881-1-git-send-email-armbru@redhat.com> References: <1457109928-4881-1-git-send-email-armbru@redhat.com> Subject: [Qemu-devel] [PULL 01/12] qmp-shell: fix pretty printing of JSON responses List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org From: "Daniel P. Berrange" Pretty printing of JSON responses is important to be able to understand large responses from query commands in particular. Unfortunately this was broken during the addition of the verbose flag in commit 1ceca07e48ead0dd2e41576c81d40e6a91cafefd Author: John Snow Date: Wed Apr 29 15:14:04 2015 -0400 scripts: qmp-shell: Add verbose flag This is because that change turned the python data structure into a formatted JSON string before the pretty print was given it. So we're just pretty printing a string, which is a no-op. The original pretty printer would output python objects. (QEMU) query-chardev { u'return': [ { u'filename': u'vc', u'frontend-open': False, u'label': u'parallel0'}, { u'filename': u'vc', u'frontend-open': True, u'label': u'serial0'}, { u'filename': u'unix:/tmp/qemp,server', u'frontend-open': True, u'label': u'compat_monitor0'}]} This fixes the problem by switching to outputting pretty formatted JSON text instead. This has the added benefit that the pretty printed output is now valid JSON text. Due to the way the verbose flag was handled, the pretty printing now applies to the command sent, as well as its response: (QEMU) query-chardev { "execute": "query-chardev", "arguments": {} } { "return": [ { "frontend-open": false, "label": "parallel0", "filename": "vc" }, { "frontend-open": true, "label": "serial0", "filename": "vc" }, { "frontend-open": true, "label": "compat_monitor0", "filename": "unix:/tmp/qmp,server" } ] } Signed-off-by: Daniel P. Berrange Message-Id: <1456224706-1591-1-git-send-email-berrange@redhat.com> Tested-by: Kashyap Chamarthy Reviewed-by: John Snow [Bonus fix: multiple -p now work] Signed-off-by: Markus Armbruster --- scripts/qmp/qmp-shell | 23 ++++++++++------------- 1 file changed, 10 insertions(+), 13 deletions(-) diff --git a/scripts/qmp/qmp-shell b/scripts/qmp/qmp-shell index 7a402ed..0373b24 100755 --- a/scripts/qmp/qmp-shell +++ b/scripts/qmp/qmp-shell @@ -70,7 +70,6 @@ import json import ast import readline import sys -import pprint class QMPCompleter(list): def complete(self, text, state): @@ -103,11 +102,11 @@ class FuzzyJSON(ast.NodeTransformer): # TODO: QMPShell's interface is a bit ugly (eg. _fill_completion() and # _execute_cmd()). Let's design a better one. class QMPShell(qmp.QEMUMonitorProtocol): - def __init__(self, address, pp=None): + def __init__(self, address, pretty=False): qmp.QEMUMonitorProtocol.__init__(self, self.__get_address(address)) self._greeting = None self._completer = None - self._pp = pp + self._pretty = pretty self._transmode = False self._actions = list() @@ -231,11 +230,11 @@ class QMPShell(qmp.QEMUMonitorProtocol): return qmpcmd def _print(self, qmp): - jsobj = json.dumps(qmp) - if self._pp is not None: - self._pp.pprint(jsobj) - else: - print str(jsobj) + indent = None + if self._pretty: + indent = 4 + jsobj = json.dumps(qmp, indent=indent) + print str(jsobj) def _execute_cmd(self, cmdline): try: @@ -377,7 +376,7 @@ def main(): addr = '' qemu = None hmp = False - pp = None + pretty = False verbose = False try: @@ -387,9 +386,7 @@ def main(): fail_cmdline(arg) hmp = True elif arg == "-p": - if pp is not None: - fail_cmdline(arg) - pp = pprint.PrettyPrinter(indent=4) + pretty = True elif arg == "-v": verbose = True else: @@ -398,7 +395,7 @@ def main(): if hmp: qemu = HMPShell(arg) else: - qemu = QMPShell(arg, pp) + qemu = QMPShell(arg, pretty) addr = arg if qemu is None: -- 2.4.3