X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Flibraries%2Fpython%2FDUTSetup.py;h=1f87f03cb915998e9faab5e3c25f94a861538f2b;hp=e2d183fe4e412975b74aba76e4ad53ee0ebfec08;hb=a060d519d0a89574f5e75d4e8d4c142fa5687555;hpb=5aa03bac1ea4fe07f59c6b294b23fce94a0a805b

diff --git a/resources/libraries/python/DUTSetup.py b/resources/libraries/python/DUTSetup.py
index e2d183fe4e..1f87f03cb9 100644
--- a/resources/libraries/python/DUTSetup.py
+++ b/resources/libraries/python/DUTSetup.py
@@ -11,6 +11,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+"""DUT setup library."""
+
 from robot.api import logger
 
 from resources.libraries.python.topology import NodeType
@@ -20,6 +22,7 @@ from resources.libraries.python.VatExecutor import VatExecutor
 
 
 class DUTSetup(object):
+    """Contains methods for setting up DUTs."""
     @staticmethod
     def start_vpp_service_on_all_duts(nodes):
         """Start up the VPP service on all nodes."""
@@ -28,8 +31,8 @@ class DUTSetup(object):
             if node['type'] == NodeType.DUT:
                 ssh.connect(node)
                 (ret_code, stdout, stderr) = \
-                    ssh.exec_command_sudo('service vpp restart')
-                if 0 != int(ret_code):
+                    ssh.exec_command_sudo('service vpp restart', timeout=120)
+                if int(ret_code) != 0:
                     logger.debug('stdout: {0}'.format(stdout))
                     logger.debug('stderr: {0}'.format(stderr))
                     raise Exception('DUT {0} failed to start VPP service'.
@@ -74,16 +77,69 @@ class DUTSetup(object):
 
     @staticmethod
     def setup_dut(node):
+        """Run script over SSH to setup the DUT node.
+
+        :param node: DUT node to set up.
+        :type node: dict
+
+        :raises Exception: If the DUT setup fails.
+        """
         ssh = SSH()
         ssh.connect(node)
 
         (ret_code, stdout, stderr) = \
-            ssh.exec_command('sudo -Sn bash {0}/{1}/dut_setup.sh'.format(
-                Constants.REMOTE_FW_DIR, Constants.RESOURCES_LIB_SH))
+            ssh.exec_command('sudo -Sn bash {0}/{1}/dut_setup.sh'.
+                             format(Constants.REMOTE_FW_DIR,
+                                    Constants.RESOURCES_LIB_SH), timeout=120)
         logger.trace(stdout)
         logger.trace(stderr)
-        if 0 != int(ret_code):
+        if int(ret_code) != 0:
             logger.debug('DUT {0} setup script failed: "{1}"'.
                          format(node['host'], stdout + stderr))
             raise Exception('DUT test setup script failed at node {}'.
                             format(node['host']))
+
+    @staticmethod
+    def get_vpp_pid(node):
+        """Get PID of running VPP process.
+
+        :param node: DUT node.
+        :type node: dict
+        :return: PID
+        :rtype: int
+        :raises RuntimeError if it is not possible to get the PID.
+        """
+
+        ssh = SSH()
+        ssh.connect(node)
+        ret_code, stdout, stderr = ssh.exec_command('pidof vpp')
+
+        logger.trace(stdout)
+        logger.trace(stderr)
+
+        if int(ret_code) != 0:
+            logger.debug('Not possible to get PID of VPP process on node: '
+                         '{0}\n {1}'.format(node['host'], stdout + stderr))
+            raise RuntimeError('Not possible to get PID of VPP process on node:'
+                               ' {}'.format(node['host']))
+
+        if len(stdout.splitlines()) != 1:
+            raise RuntimeError("More then one VPP PID found on node {0}".
+                               format(node['host']))
+        return int(stdout)
+
+    @staticmethod
+    def get_vpp_pids(nodes):
+        """Get PID of running VPP process on all DUTs.
+
+        :param nodes: DUT nodes.
+        :type nodes: dict
+        :return: PIDs
+        :rtype: dict
+        """
+
+        pids = dict()
+        for node in nodes.values():
+            if node['type'] == NodeType.DUT:
+                pids[node['host']] = DUTSetup.get_vpp_pid(node)
+        return pids