From 44ee87706046d6caac49feff5a595e837974ff69 Mon Sep 17 00:00:00 2001
From: Hans Feldt <hans.feldt@ericsson.com>
Date: Wed, 20 May 2015 14:28:24 +0200
Subject: add package runners and a few runners

The "duration" runner will run a test for an amount of time.
The "arithmetic" runner will increase an input value of the test for
every run until a limit is reached.

Change-Id: I31c9864604110ce3f5d19ec110144d1c886c7620
JIRA: -
Signed-off-by: Hans Feldt <hans.feldt@ericsson.com>
---
 yardstick/benchmark/runners/base.py | 94 +++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 yardstick/benchmark/runners/base.py

(limited to 'yardstick/benchmark/runners/base.py')

diff --git a/yardstick/benchmark/runners/base.py b/yardstick/benchmark/runners/base.py
new file mode 100644
index 000000000..59ec4734a
--- /dev/null
+++ b/yardstick/benchmark/runners/base.py
@@ -0,0 +1,94 @@
+##############################################################################
+# Copyright (c) 2015 Ericsson AB and others.
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+##############################################################################
+
+import importlib
+import multiprocessing
+import json
+import logging
+
+log = logging.getLogger(__name__)
+
+import yardstick.common.utils as utils
+from yardstick.benchmark.scenarios import base as base_scenario
+
+
+def _output_serializer_main(filename, queue):
+    '''entrypoint for the singleton subprocess writing to outfile
+    Use of this process enables multiple instances of a scenario without
+    messing up the output file.
+    '''
+    with open(filename, 'w') as outfile:
+        while True:
+            # blocks until data becomes available
+            record = queue.get()
+            if record == '_TERMINATE_':
+                outfile.close()
+                break
+            else:
+                json.dump(record, outfile)
+                outfile.write('\n')
+
+
+class Runner(object):
+    queue = None
+    dump_process = None
+    runners = []
+
+    @staticmethod
+    def _get_cls(runner_type):
+        for runner in utils.itersubclasses(Runner):
+            if runner_type == runner.__execution_type__:
+                return runner
+        raise RuntimeError("No such runner_type %s" % runner_type)
+
+    @staticmethod
+    def get(config):
+        """Returns instance of a scenario runner for execution type.
+        """
+        # if there is no runner, start the output serializer subprocess
+        if len(Runner.runners) == 0:
+            log.debug("Starting dump process file '%s'" %
+                      config["output_filename"])
+            Runner.queue = multiprocessing.Queue()
+            Runner.dump_process = multiprocessing.Process(
+                target=_output_serializer_main,
+                name="Dumper",
+                args=(config["output_filename"], Runner.queue))
+            Runner.dump_process.start()
+
+        return Runner._get_cls(config["type"])(config, Runner.queue)
+
+    @staticmethod
+    def release(runner):
+        '''Release the runner'''
+        Runner.runners.remove(runner)
+        # if this was the last runner, stop the output serializer subprocess
+        if len(Runner.runners) == 0:
+            log.debug("Stopping dump process")
+            Runner.queue.put('_TERMINATE_')
+            Runner.dump_process.join()
+
+    def __init__(self, config, queue):
+        self.context = {}
+        self.config = config
+        self.result_queue = queue
+        Runner.runners.append(self)
+
+    def run(self, scenario_type, scenario_args):
+        class_name = base_scenario.Scenario.get(scenario_type)
+        path_split = class_name.split(".")
+        module_path = ".".join(path_split[:-1])
+        module = importlib.import_module(module_path)
+        cls = getattr(module, path_split[-1])
+
+        self.config['object'] = class_name
+        self._run_benchmark(cls, "run", scenario_args)
+
+    def join(self):
+        self.process.join()
-- 
cgit 1.2.3-korg