From: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
To: qemu-block@nongnu.org
Cc: kwolf@redhat.com, vsementsov@virtuozzo.com,
qemu-devel@nongnu.org, mreitz@redhat.com,
andrey.shinkevich@virtuozzo.com, den@openvz.org
Subject: [PATCH v12 10/11] qcow2_format.py: support dumping metadata in JSON format
Date: Thu, 30 Jul 2020 17:15:11 +0300 [thread overview]
Message-ID: <1596118512-424960-11-git-send-email-andrey.shinkevich@virtuozzo.com> (raw)
In-Reply-To: <1596118512-424960-1-git-send-email-andrey.shinkevich@virtuozzo.com>
Implementation of dumping QCOW2 image metadata.
The sample output:
{
"Header_extensions": [
{
"name": "Feature table",
"magic": 1745090647,
"length": 192,
"data_str": "<binary>"
},
{
"name": "Bitmaps",
"magic": 595929205,
"length": 24,
"data": {
"nb_bitmaps": 2,
"reserved32": 0,
"bitmap_directory_size": 64,
"bitmap_directory_offset": 1048576,
"bitmap_directory": [
{
"name": "bitmap-1",
"bitmap_table_offset": 589824,
"bitmap_table_size": 1,
"flags": 2,
"type": 1,
"granularity_bits": 15,
"name_size": 8,
"extra_data_size": 0,
"bitmap_table": [
{
"type": "serialized",
"offset": 655360
},
...
Suggested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
---
tests/qemu-iotests/qcow2_format.py | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/tests/qemu-iotests/qcow2_format.py b/tests/qemu-iotests/qcow2_format.py
index a4114cb..7487720 100644
--- a/tests/qemu-iotests/qcow2_format.py
+++ b/tests/qemu-iotests/qcow2_format.py
@@ -19,6 +19,15 @@
import struct
import string
+import json
+
+
+class ComplexEncoder(json.JSONEncoder):
+ def default(self, obj):
+ if hasattr(obj, 'to_dict'):
+ return obj.to_dict()
+ else:
+ return json.JSONEncoder.default(self, obj)
class Qcow2Field:
@@ -110,6 +119,10 @@ class Qcow2Struct(metaclass=Qcow2StructMeta):
for i, field in enumerate(self.fields))
def dump(self, is_json=False):
+ if is_json:
+ print(json.dumps(self.to_dict(), indent=4, cls=ComplexEncoder))
+ return
+
for f in self.fields:
value = self.__dict__[f[2]]
if isinstance(f[1], str):
@@ -440,6 +453,10 @@ class QcowHeader(Qcow2Struct):
fd.write(buf)
def dump_extensions(self, is_json=False):
+ if is_json:
+ print(json.dumps(self.extensions, indent=4, cls=ComplexEncoder))
+ return
+
for ex in self.extensions:
print('Header extension:')
ex.dump()
--
1.8.3.1
next prev parent reply other threads:[~2020-07-30 14:21 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-30 14:15 [PATCH v12 00/11] iotests: Dump QCOW2 dirty bitmaps metadata Andrey Shinkevich
2020-07-30 14:15 ` [PATCH v12 01/11] iotests: add test for QCOW2 header dump Andrey Shinkevich
2020-07-30 19:05 ` Eric Blake
2020-07-31 7:28 ` Andrey Shinkevich
2020-08-05 11:23 ` Vladimir Sementsov-Ogievskiy
2020-08-05 12:10 ` Andrey Shinkevich
2020-07-30 14:15 ` [PATCH v12 02/11] qcow2_format.py: make printable data an extension class member Andrey Shinkevich
2020-07-30 14:15 ` [PATCH v12 03/11] qcow2_format.py: change Qcow2BitmapExt initialization method Andrey Shinkevich
2020-07-30 14:15 ` [PATCH v12 04/11] qcow2_format.py: dump bitmap flags in human readable way Andrey Shinkevich
2020-07-30 14:15 ` [PATCH v12 05/11] qcow2_format.py: Dump bitmap directory information Andrey Shinkevich
2020-07-30 14:15 ` [PATCH v12 06/11] qcow2_format.py: pass cluster size to substructures Andrey Shinkevich
2020-07-30 14:15 ` [PATCH v12 07/11] qcow2_format.py: Dump bitmap table serialized entries Andrey Shinkevich
2020-08-05 15:57 ` Vladimir Sementsov-Ogievskiy
2020-07-30 14:15 ` [PATCH v12 08/11] qcow2.py: Introduce '-j' key to dump in JSON format Andrey Shinkevich
2020-08-05 16:12 ` Vladimir Sementsov-Ogievskiy
2020-07-30 14:15 ` [PATCH v12 09/11] qcow2_format.py: collect fields " Andrey Shinkevich
2020-08-05 16:58 ` Vladimir Sementsov-Ogievskiy
2020-08-06 9:08 ` Andrey Shinkevich
2020-08-06 9:18 ` Vladimir Sementsov-Ogievskiy
2020-07-30 14:15 ` Andrey Shinkevich [this message]
2020-08-05 17:04 ` [PATCH v12 10/11] qcow2_format.py: support dumping metadata " Vladimir Sementsov-Ogievskiy
2020-07-30 14:15 ` [PATCH v12 11/11] iotests: dump QCOW2 header in JSON in #303 Andrey Shinkevich
2020-08-05 17:08 ` Vladimir Sementsov-Ogievskiy
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