1 files changed, 154 insertions, 0 deletions
diff --git a/vstf/vstf/agent/env/basic/vm9pfs.py b/vstf/vstf/agent/env/basic/vm9pfs.py
new file mode 100755
index 00000000..f3a2c2ce
--- /dev/null
+++ b/vstf/vstf/agent/env/basic/vm9pfs.py
@@ -0,0 +1,154 @@
+"""
+Created on 2015-8-27
+
+@author: y00228926
+"""
+import os
+import logging
+import textwrap
+from vstf.common.utils import my_sleep
+from vstf.agent.env.fsmonitor import constant
+
+LOG = logging.getLogger(__name__)
+
+
+class VMConfigBy9pfs(object):
+    """
+    host side implemetation of a self-defined communication protocol using libvirt 9pfs to give commands to the Virtual Machine.
+
+    """
+
+    def __init__(self, vm_9p_path):
+        """
+        :param vm_9p_path: The host path of libvirt 9pfs for a vm.
+        :return:
+        """
+        self.vm_9p_path = vm_9p_path
+
+    def clean(self):
+        self._unlink(self._path(constant.VM_CMD_RETURN_CODE_FILE))
+        self._unlink(self._path(constant.VM_CMD_DONE_FLAG_FILE))
+
+    def _path(self, relative_path):
+        return os.path.join(self.vm_9p_path, relative_path)
+
+    def _unlink(self, file_path):
+        os.unlink(file_path)
+        LOG.info("os.unlink(%s)", file_path)
+
+    def _read(self, filename):
+        filepath = self._path(filename)
+        with open(filepath, 'r') as f:
+            ret = f.read()
+            LOG.info("read(%s) -> %s", filepath, ret)
+        return ret
+
+    def _write(self, filename, cmd):
+        filepath = self._path(filename)
+        with open(filepath, 'w') as f:
+            f.write("%s" % cmd)
+            LOG.info("write(%s) <- %s", filepath, cmd)
+
+    def _wait_flag_file_to_exist(self, filename, timeout):
+        filepath = self._path(filename)
+        while timeout > 0:
+            if os.path.exists(filepath):
+                LOG.info("wait and find file:%s", filepath)
+                return True
+            my_sleep(1)
+            timeout -= 1
+            LOG.info("waiting file to exist:%s", filepath)
+        return False
+
+    def _get_cmd_return_code(self):
+        ret = self._read(constant.VM_CMD_RETURN_CODE_FILE)
+        return ret == constant.VM_CMD_EXCUTE_SUCCES_FLAG_CONTENT
+
+    def _wait_command_done(self):
+        done = self._wait_flag_file_to_exist(constant.VM_CMD_DONE_FLAG_FILE, constant.VM_COMMON_CMD_EXCUTE_TIME_OUT)
+        if done:
+            return self._get_cmd_return_code()
+        else:
+            return 'timeout'
+
+    def _set_cmd(self, cmd):
+        self._write(constant.VM_CMD_CONTENT_FILE, cmd)
+        self._write(constant.VM_CMD_SET_FLAG_FILE, '')
+        ret = self._wait_command_done()
+        if ret:
+            self.clean()
+            return ret
+        else:
+            raise Exception("9pfs command failure: timeout.")
+
+    def wait_up(self):
+        return self._wait_flag_file_to_exist(constant.VM_UP_Flag_FILE, constant.VM_UP_TIME_OUT)
+
+    def config_ip(self, mac, ip):
+        cmd = 'config_ip %s %s' % (mac, ip)
+        return self._set_cmd(cmd)
+
+    def config_gw(self, ip):
+        cmd = 'config_gw %s' % ip
+        return self._set_cmd(cmd)
+
+    def set_pktloop_dpdk(self, macs):
+        """
+        To connect two network devices together in the vm and loop the packets received to another.
+        Use dpdk testpmd to loop the packets. See FSMonitor.
+
+        :param macs: the mac address list of network cards of the vm.
+        :return: True for success, Exception for Failure.
+        """
+        mac_str = ' '.join(macs)
+        cmd = 'set_pktloop_dpdk ' + mac_str
+        return self._set_cmd(cmd)
+
+    def recover_nic_binding(self, macs):
+        """
+        in contrast to set_pktloop_dpdk, disconnect the looping.
+        :param macs:  the mac address list of network cards of the vm.
+        :return: True for success, Exception for Failure.
+        """
+        mac_str = ' '.join(macs)
+        cmd = 'recover_nic_binding ' + mac_str
+        return self._set_cmd(cmd)
+
+    def config_amqp(self, identity, server, port=5672, user="guest", passwd="guest"):
+        data = {
+            'server': server,
+            'port': port,
+            'id': identity,
+            'user': user,
+            'passwd': passwd
+        }
+        header = "[rabbit]"
+        content = '''
+        user=%(user)s
+        passwd=%(passwd)s
+        host=%(server)s
+        port=%(port)s
+        id=%(id)s''' % data
+        file_name = "amqp.ini"
+        dedented_text = textwrap.dedent(content)
+        self._write(file_name, header+dedented_text)
+        cmd = 'config_amqp %s' % file_name
+        return self._set_cmd(cmd)
+
+    def stop_vstf(self):
+        cmd = "stop_vstf"
+        return self._set_cmd(cmd)
+
+    def __repr__(self):
+        return self.__class__.__name__ + ':' + self.vm_9p_path
+
+
+if __name__ == '__main__':
+    fs = VMConfigBy9pfs('/tmp/tmp4T6p7L')
+    print os.listdir(os.curdir)
+    print fs.config_ip('56:6f:44:a5:3f:a4', '192.168.188.200/23')
+    print fs.config_gw('192.168.188.1')
+    print fs.set_pktloop_dpdk(['56:6f:44:a5:3f:a2', '56:6f:44:a5:3f:a3'])
+    print fs.recover_nic_binding(['56:6f:44:a5:3f:a2', '56:6f:44:a5:3f:a3'])
+    print fs.config_amqp('192.168.188.200', '192.168.188.10')
+    print os.listdir(os.curdir)