Add rest api

[osm/vim-emu.git] / src / emuvim / test / api_base.py

diff --git a/src/emuvim/test/api_base.py b/src/emuvim/test/api_base.py
new file mode 100644 (file)
index 0000000..54ffde9
--- /dev/null
+++ b/src/emuvim/test/api_base.py
@@ -0,0 +1,106 @@
+"""
+Helper module that implements helpers for test implementations.
+"""
+
+import unittest
+import os
+import subprocess
+import docker
+from emuvim.dcemulator.net import DCNetwork
+from emuvim.api.rest.compute import RestApiEndpoint
+from mininet.clean import cleanup
+from mininet.node import Controller
+
+class SimpleTestTopology(unittest.TestCase):
+    """
+        Helper class to do basic test setups.
+        s1 -- s2 -- s3 -- ... -- sN
+    """
+
+    def __init__(self, *args, **kwargs):
+        self.net = None
+        self.api = None
+        self.s = []   # list of switches
+        self.h = []   # list of hosts
+        self.d = []   # list of docker containers
+        self.dc = []  # list of data centers
+        self.docker_cli = None
+        super(SimpleTestTopology, self).__init__(*args, **kwargs)
+
+    def createNet(
+            self,
+            nswitches=0, ndatacenter=0, nhosts=0, ndockers=0,
+            autolinkswitches=False, controller=Controller, **kwargs):
+        """
+        Creates a Mininet instance and automatically adds some
+        nodes to it.
+
+        Attention, we should always use Mininet's default controller
+        for our tests. Only use other controllers if you want to test
+        specific controller functionality.
+        """
+        self.net = DCNetwork(controller=controller, **kwargs)
+        self.api = RestApiEndpoint("127.0.0.1",5000)
+        # add some switches
+        # start from s1 because ovs does not like to have dpid = 0
+        # and switch name-number is being used by mininet to set the dpid
+        for i in range(1, nswitches+1):
+            self.s.append(self.net.addSwitch('s%d' % i))
+        # if specified, chain all switches
+        if autolinkswitches:
+            for i in range(0, len(self.s) - 1):
+                self.net.addLink(self.s[i], self.s[i + 1])
+        # add some data centers
+        for i in range(0, ndatacenter):
+            self.dc.append(
+                self.net.addDatacenter(
+                    'datacenter%d' % i,
+                    metadata={"unittest_dc": i}))
+        # connect data centers to the endpoint
+        for i in range(0, ndatacenter):
+            self.api.connectDatacenter(self.dc[i])
+        # add some hosts
+        for i in range(0, nhosts):
+            self.h.append(self.net.addHost('h%d' % i))
+        # add some dockers
+        for i in range(0, ndockers):
+            self.d.append(self.net.addDocker('d%d' % i, dimage="ubuntu:trusty"))
+
+    def startApi(self):
+        self.api.start()
+
+    def startNet(self):
+        self.net.start()
+
+    def stopNet(self):
+        self.net.stop()
+
+    def getDockerCli(self):
+        """
+        Helper to interact with local docker instance.
+        """
+        if self.docker_cli is None:
+            self.docker_cli = docker.Client(
+                base_url='unix://var/run/docker.sock')
+        return self.docker_cli
+
+    def getContainernetContainers(self):
+        """
+        List the containers managed by containernet
+        """
+        return self.getDockerCli().containers(filters={"label": "com.containernet"})
+
+    @staticmethod
+    def setUp():
+        pass
+
+    @staticmethod
+    def tearDown():
+        cleanup()
+        # make sure that all pending docker containers are killed
+        with open(os.devnull, 'w') as devnull:
+            subprocess.call(
+                "sudo docker rm -f $(sudo docker ps --filter 'label=com.containernet' -a -q)",
+                stdout=devnull,
+                stderr=devnull,
+                shell=True)
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