1 files changed, 165 insertions, 0 deletions
diff --git a/vnftest/runners/iteration.py b/vnftest/runners/iteration.py
new file mode 100644
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+++ b/vnftest/runners/iteration.py
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+##############################################################################
+# Copyright 2018 EuropeanSoftwareMarketingLtd.
+# ===================================================================
+#  Licensed under the ApacheLicense, Version2.0 (the"License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#  http://www.apache.org/licenses/LICENSE-2.0
+#
+# software distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and limitations under
+# the License
+##############################################################################
+# vnftest comment: this is a modified copy of
+# rally/rally/benchmark/runners/vnf_type_crawler.py
+
+"""A runner that runs a configurable number of times before it returns
+"""
+
+from __future__ import absolute_import
+
+import logging
+import multiprocessing
+import time
+import traceback
+
+import os
+
+from vnftest.common.exceptions import VnftestException
+from vnftest.runners import base
+
+LOG = logging.getLogger(__name__)
+
+
+QUEUE_PUT_TIMEOUT = 10
+
+
+def _worker_process(result_queue, cls, method_name, step_cfg,
+                    context_cfg, input_params, aborted, output_queue):
+
+    sequence = 1
+
+    runner_cfg = step_cfg['runner']
+
+    interval = runner_cfg.get("interval", 1)
+    iterations = runner_cfg.get("iterations", 1)
+    run_step = runner_cfg.get("run_step", "setup,run,teardown")
+
+    delta = runner_cfg.get("delta", 2)
+    LOG.info("worker START, iterations %d times, class %s", iterations, cls)
+
+    runner_cfg['runner_id'] = os.getpid()
+
+    step = cls(step_cfg, context_cfg, input_params)
+    if "setup" in run_step:
+        step.setup()
+
+    method = getattr(step, method_name)
+
+    sla_action = None
+    if "sla" in step_cfg:
+        sla_action = step_cfg["sla"].get("action", "assert")
+    if "run" in run_step:
+        while True:
+
+            LOG.debug("runner=%(runner)s seq=%(sequence)s START",
+                      {"runner": runner_cfg["runner_id"],
+                       "sequence": sequence})
+
+            results = {}
+            errors = []
+            fatal_error = False
+
+            try:
+                output = method(results)
+                if output:
+                    # add timeout for put so we don't block test
+                    # if we do timeout we don't care about dropping individual KPIs
+                    output_queue.put(output, True, QUEUE_PUT_TIMEOUT)
+            except AssertionError as assertion:
+                # SLA validation failed in step, determine what to do now
+                if sla_action == "assert":
+                    raise
+                elif sla_action == "monitor":
+                    LOG.warning("SLA validation failed: %s", assertion.args)
+                    errors.append(assertion.args)
+                elif sla_action == "rate-control":
+                    try:
+                        step_cfg['options']['rate']
+                    except KeyError:
+                        step_cfg.setdefault('options', {})
+                        step_cfg['options']['rate'] = 100
+
+                    step_cfg['options']['rate'] -= delta
+                    sequence = 1
+                    continue
+            except Exception:
+                errors.append(traceback.format_exc())
+                LOG.exception("")
+                LOG.info("Abort the task")
+                fatal_error = True
+
+            time.sleep(interval)
+
+            step_results = {
+                'timestamp': time.time(),
+                'sequence': sequence,
+                'data': results,
+                'errors': errors
+            }
+
+            result_queue.put(step_results, True, QUEUE_PUT_TIMEOUT)
+
+            LOG.debug("runner=%(runner)s seq=%(sequence)s END",
+                      {"runner": runner_cfg["runner_id"],
+                       "sequence": sequence})
+
+            sequence += 1
+
+            if (errors and sla_action is None) or \
+                    (sequence > iterations or aborted.is_set()) or fatal_error:
+                LOG.info("worker END")
+                break
+    if "teardown" in run_step:
+        try:
+            step.teardown()
+        except Exception:
+            # catch any exception in teardown and convert to simple exception
+            # never pass exceptions back to multiprocessing, because some exceptions can
+            # be unpicklable
+            # https://bugs.python.org/issue9400
+            LOG.exception("")
+            raise SystemExit(1)
+
+    LOG.debug("queue.qsize() = %s", result_queue.qsize())
+    LOG.debug("output_queue.qsize() = %s", output_queue.qsize())
+    if fatal_error:
+        raise SystemExit(1)
+
+
+class IterationRunner(base.Runner):
+    """Run a step for a configurable number of times
+
+If the step ends before the time has elapsed, it will be started again.
+
+  Parameters
+    iterations - amount of times the step will be run for
+        type:    int
+        unit:    na
+        default: 1
+    interval - time to wait between each step invocation
+        type:    int
+        unit:    seconds
+        default: 1 sec
+    """
+    __execution_type__ = 'Iteration'
+
+    def _run_step(self, cls, method, step_cfg, context_cfg, input_params):
+        name = "{}-{}-{}".format(self.__execution_type__, step_cfg.get("type"), os.getpid())
+        self.process = multiprocessing.Process(
+            name=name,
+            target=_worker_process,
+            args=(self.result_queue, cls, method, step_cfg,
+                  context_cfg, input_params, self.aborted, self.output_queue))
+        self.process.start()