crosperf: use mac address as machine id if VPD is not available.

For zgb machine, the dump_vpd_log --full --stdout does not return
serial number, in this case, we use mac address instead.

BUG=None
TEST=It get machine id for zgb

Change-Id: I1058dcd2a18638533c90a40d09adcc7a6bd8a660
Reviewed-on: https://gerrit-int.chromium.org/38900
Reviewed-by: Luis Lozano <llozano@chromium.org>
Tested-by: Yunlian Jiang <yunlian@google.com>
Commit-Queue: Yunlian Jiang <yunlian@google.com>

1 files changed, 13 insertions, 2 deletions

diff --git a/crosperf/machine_manager.py b/crosperf/machine_manager.py
index ea3f17d7..957c8304 100644
--- a/crosperf/machine_manager.py
+++ b/crosperf/machine_manager.py
@@ -132,8 +132,19 @@ class CrosMachine(object):
         machine=self.name, chromeos_root=self.chromeos_root)
     b = if_out.splitlines()
     a = [l for l in b if "Product" in l]
-    self.machine_id = a[0]
-    assert ret == 0, "Could not get machine_id from machine: %s" % self.name
+    if len(a):
+      self.machine_id = a[0]
+      return
+    command = "ifconfig"
+    ret, if_out, _ = ce.CrosRunCommand(
+        command, return_output=True,
+        machine=self.name, chromeos_root=self.chromeos_root)
+    b = if_out.splitlines()
+    a = [l for l in b if "HWaddr" in l]
+    if len(a):
+      self.machine_id = "_".join(a)
+      return
+    assert 0, "Could not get machine_id from machine: %s" % self.name
 
   def __str__(self):
     l = []