python: move EventLogEvent definition to flux.eventlog

Problem: The EventLogEvent class is defined in flux.job.event, but
the eventlog format is not specific to jobs.

Move the EventLogEvent class up a level to eventlog.py. For backwards
compatibility, retain the ability to import EventLogEvent from flux.job
and flux.job.event.

Author: grondo

src/bindings/python/flux/Makefile.am

@@ -11,6 +11,7 @@ nobase_fluxpy_PYTHON = \
 	memoized_property.py \
 	debugged.py \
 	importer.py \
+	eventlog.py \
 	conf_builtin.py \
 	cli/__init__.py \
 	cli/base.py \

src/bindings/python/flux/eventlog.py

@@ -0,0 +1,50 @@
+###############################################################
+# Copyright 2020 Lawrence Livermore National Security, LLC
+# (c.f. AUTHORS, NOTICE.LLNS, COPYING)
+#
+# This file is part of the Flux resource manager framework.
+# For details, see https://github.com/flux-framework.
+#
+# SPDX-License-Identifier: LGPL-3.0
+###############################################################
+
+import json
+
+
+class EventLogEvent(dict):
+    """
+    wrapper class for a single KVS EventLog entry
+    """
+
+    def __init__(self, event):
+        """
+        "Initialize from a string or dict eventlog event
+        """
+        if isinstance(event, str):
+            event = json.loads(event)
+        super().__init__(event)
+        if "context" not in self:
+            self["context"] = {}
+
+    def __str__(self):
+        return "{0.timestamp:<0.5f}: {0.name} {0.context}".format(self)
+
+    @property
+    def name(self):
+        return self["name"]
+
+    @property
+    def timestamp(self):
+        return self["timestamp"]
+
+    @property
+    def context(self):
+        return self["context"]
+
+    @property
+    def context_string(self):
+        if not self.context:
+            return ""
+        return json.dumps(
+            self.context, ensure_ascii=False, separators=(",", ":"), sort_keys=True
+        )

src/bindings/python/flux/job/event.py

@@ -8,9 +8,9 @@
 # SPDX-License-Identifier: LGPL-3.0
 ###############################################################
 import errno
-import json
 
 from _flux._core import ffi
+from flux.eventlog import EventLogEvent
 from flux.job._wrapper import _RAW as RAW
 from flux.kvs import WatchImplementation
 
@@ -35,45 +35,6 @@
 )
 
 
-class EventLogEvent(dict):
-    """
-    wrapper class for a single KVS EventLog entry
-    """
-
-    def __init__(self, event):
-        """
-        "Initialize from a string or dict eventlog event
-        """
-        if isinstance(event, str):
-            event = json.loads(event)
-        super().__init__(event)
-        if "context" not in self:
-            self["context"] = {}
-
-    def __str__(self):
-        return "{0.timestamp:<0.5f}: {0.name} {0.context}".format(self)
-
-    @property
-    def name(self):
-        return self["name"]
-
-    @property
-    def timestamp(self):
-        return self["timestamp"]
-
-    @property
-    def context(self):
-        return self["context"]
-
-    @property
-    def context_string(self):
-        if not self.context:
-            return ""
-        return json.dumps(
-            self.context, ensure_ascii=False, separators=(",", ":"), sort_keys=True
-        )
-
-
 class JobEventWatchFuture(WatchImplementation):
     """
     A future returned from job.event_watch_async().