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Message-Id: <20240926173554.404411-9-irogers@google.com>
Date: Thu, 26 Sep 2024 10:35:50 -0700
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Kan Liang <kan.liang@...ux.intel.com>, John Garry <john.g.garry@...cle.com>, 
	Jing Zhang <renyu.zj@...ux.alibaba.com>, Sandipan Das <sandipan.das@....com>, 
	Benjamin Gray <bgray@...ux.ibm.com>, Xu Yang <xu.yang_2@....com>, linux-kernel@...r.kernel.org, 
	linux-perf-users@...r.kernel.org
Subject: [PATCH v4 08/12] perf jevents: Move json encoding to its own functions

Have dedicate encode functions rather than having them embedded in
MetricGroup. This is to provide some uniformity in the Metric ToXXX
routines.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/pmu-events/metric.py | 34 +++++++++++++++++++++------------
 1 file changed, 22 insertions(+), 12 deletions(-)

diff --git a/tools/perf/pmu-events/metric.py b/tools/perf/pmu-events/metric.py
index e81fed2e29b5..b39189182608 100644
--- a/tools/perf/pmu-events/metric.py
+++ b/tools/perf/pmu-events/metric.py
@@ -484,15 +484,6 @@ class Metric:
   def ToMetricGroupDescriptions(self, root: bool = True) -> Dict[str, str]:
     return {}
 
-class _MetricJsonEncoder(json.JSONEncoder):
-  """Special handling for Metric objects."""
-
-  def default(self, o):
-    if isinstance(o, Metric):
-      return o.ToPerfJson()
-    return json.JSONEncoder.default(self, o)
-
-
 class MetricGroup:
   """A group of metrics.
 
@@ -523,8 +514,11 @@ class MetricGroup:
 
     return result
 
-  def ToPerfJson(self) -> str:
-    return json.dumps(sorted(self.Flatten()), indent=2, cls=_MetricJsonEncoder)
+  def ToPerfJson(self) -> List[Dict[str, str]]:
+    result = []
+    for x in sorted(self.Flatten()):
+      result.append(x.ToPerfJson())
+    return result
 
   def ToMetricGroupDescriptions(self, root: bool = True) -> Dict[str, str]:
     result = {self.name: self.description} if self.description else {}
@@ -533,7 +527,23 @@ class MetricGroup:
     return result
 
   def __str__(self) -> str:
-    return self.ToPerfJson()
+    return str(self.ToPerfJson())
+
+
+def JsonEncodeMetric(x: MetricGroup):
+  class MetricJsonEncoder(json.JSONEncoder):
+    """Special handling for Metric objects."""
+
+    def default(self, o):
+      if isinstance(o, Metric) or isinstance(o, MetricGroup):
+        return o.ToPerfJson()
+      return json.JSONEncoder.default(self, o)
+
+  return json.dumps(x, indent=2, cls=MetricJsonEncoder)
+
+
+def JsonEncodeMetricGroupDescriptions(x: MetricGroup):
+  return json.dumps(x.ToMetricGroupDescriptions(), indent=2)
 
 
 class _RewriteIfExpToSelect(ast.NodeTransformer):
-- 
2.46.1.824.gd892dcdcdd-goog


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