[FAB-3633]: Setup and Teardown environment

This allows for the setup and teardown of
behave tests at the beginning of the scenario
runs.

Change-Id: I78cde421157a85dedfc542a75722b4784a3f7915
Signed-off-by: Latitia M Haskins <[email protected]>

Author: lhaskins

test/feature/environment.py

@@ -0,0 +1,72 @@
+# Copyright IBM Corp. 2017 All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (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
+#
+# Unless required by applicable law or agreed to in writing, 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.
+#
+
+import subprocess
+import shutil
+
+
+def getDockerComposeFileArgsFromYamlFile(composeYaml):
+    parts = composeYaml.split()
+    args = []
+    for part in parts:
+        args = args + ["-f"] + [part]
+    return args
+
+
+def getLogFiles(containers, fileSuffix):
+    """ This will gather the logs for the different component containers as well as 
+        the chaincode containers. If the containers is a list of strings, it is
+        assumed this is a chaincode container list. Otherwise, the list is a list
+        of Container objects.
+    """
+    for container in containers:
+        if isinstance(container, str):
+            namePart, sep, _ = container.rpartition("-")
+            containerName = container
+        else:
+            namePart = container.containerName
+            containerName = container.containerName
+        with open(namePart + fileSuffix, "w+") as logfile:
+            rc = subprocess.call(["docker", "logs", containerName], stdout=logfile, stderr=logfile)
+            if rc !=0 :
+                print("Cannot get logs for {0}. Docker rc = {1}".format(namePart, rc))
+
+
+def after_scenario(context, scenario):
+    getLogs = context.config.userdata.get("logs", "N")
+    if getLogs.lower() == "force" or (scenario.status == "failed" and getLogs.lower() == "y" and "compose_containers" in context):
+        print("Scenario {0} failed. Getting container logs".format(scenario.name))
+        fileSuffix = "_" + scenario.name.replace(" ", "_") + ".log"
+        # get logs from the peer containers
+        getLogFiles(containers, fileSuffix)
+        # get logs from the chaincode containers
+        chaincodeContainers = subprocess.call(["docker",  "ps", "-f",  "name=dev-", "--format", "{{.Names}}"])
+        getLogFiles(chaincodeContainers.splitlines(), fileSuffix)
+
+    if 'doNotDecompose' in scenario.tags:
+        if 'compose_yaml' in context:
+            print("Not going to decompose after scenario {0}, with yaml '{1}'".format(scenario.name, context.compose_yaml))
+    elif 'composition' in context:
+        # Remove config data and docker containers
+        shutil.rmtree("configs/%s" % context.composition.projectName)
+        context.composition.decompose()
+
+# stop any running peer that could get in the way before starting the tests
+def before_all(context):
+    pass
+
+# stop any running peer that could get in the way before starting the tests
+def after_all(context):
+    print("context.failed = {0}".format(context.failed))