Topo installation script fix

[csit.git] / resources / tools / topo_installation.py

diff --git a/resources/tools/topo_installation.py b/resources/tools/topo_installation.py
index 8b596e1..dc45d23 100755 (executable)
--- a/resources/tools/topo_installation.py
+++ b/resources/tools/topo_installation.py
@@ -22,6 +22,32 @@ from yaml import load
 
 from resources.libraries.python.ssh import SSH
 
+def ssh_no_error(ssh, cmd, sudo=False):
+    """Execute a command over ssh channel, and log and exit if the command
+    fails.
+
+    :param ssh: SSH() object connected to a node.
+    :param cmd: Command line to execute on remote node.
+    :type ssh: SSH() object
+    :type cmd: str
+    :return: stdout from the SSH command.
+    :rtype: str
+    """
+
+    if sudo == True:
+        ret, stdo, stde = ssh.exec_command_sudo(cmd)
+    else:
+        ret, stdo, stde = ssh.exec_command(cmd)
+
+    if 0 != ret:
+        print 'Command execution failed: "{}"'.format(cmd)
+        print 'stdout: {0}'.format(stdo)
+        print 'stderr: {0}'.format(stde)
+        raise RuntimeError('Unexpected ssh command failure')
+
+    return stdo
+
+
 def main():
     """Copy and installation of VPP packages."""
 
@@ -30,31 +56,45 @@ def main():
                         help="Topology file")
     parser.add_argument("-d", "--directory", required=True,
                         help="Installation directory")
-    parser.add_argument("-p", "--packages", required=True, nargs='+',
+    parser.add_argument("-p", "--packages", required=False, nargs='+',
                         help="Packages paths to copy")
+    parser.add_argument("-c", "--cancel", help="Cancel installation",
+                        action="store_true")
     args = parser.parse_args()
     topology_file = args.topo
     packages = args.packages
     install_dir = args.directory
+    cancel_installation = args.cancel
 
     work_file = open(topology_file)
     topology = load(work_file.read())['nodes']
 
+    ssh = SSH()
     for node in topology:
         if topology[node]['type'] == "DUT":
-            ssh = SSH()
+            print "###TI host: {}".format(topology[node]['host'])
             ssh.connect(topology[node])
 
-            # Copy packages from local path to installation dir
-            for deb in packages:
-                ssh.scp(local_path=deb, remote_path=install_dir)
+            if cancel_installation:
+                # Remove installation directory on DUT
+                cmd = "rm -r {}".format(install_dir)
+                stdout = ssh_no_error(ssh, cmd)
+                print "###TI {}".format(stdout)
+            else:
+                # Create installation directory on DUT
+                cmd = "mkdir {}".format(install_dir)
+                stdout = ssh_no_error(ssh, cmd)
+                print "###TI {}".format(stdout)
+
+                # Copy packages from local path to installation dir
+                for deb in packages:
+                    print "###TI scp: {}".format(deb)
+                    ssh.scp(local_path=deb, remote_path=install_dir)
 
-            # Installation of VPP deb packages
-            ret, _, err = ssh.exec_command_sudo(
-                "dpkg -i {}/*.deb".format(install_dir))
-            if ret != 0:
-                print "Installation unsuccessful:\n{}".format(err)
-                return ret
+                # Installation of VPP deb packages
+                cmd = "dpkg -i --force-all {}/*.deb".format(install_dir)
+                stdout = ssh_no_error(ssh, cmd, sudo=True)
+                print "###TI {}".format(stdout)
 
 if __name__ == "__main__":
     sys.exit(main())