Add logic to run from baked images.

Change adds the following:
- logic to run from "baked images". See [GVISOR_DIR]/tools/images
- installers which install modified files from a workspace. This
allows users to run benchmarks while modifying runsc.
- removes the --preemptible tag from built GCE instances. Preemptible
instances are much more likely to be preempted on startup, which
manifests for the user as a failed benchmark. I don't currently have
a way to detect if a VM has been preempted that will work for this
change.
https://cloud.google.com/compute/docs/instances/preemptible#preemption_process
https://cloud.google.com/compute/docs/instances/preemptible#preemption_selection

PiperOrigin-RevId: 293697949

1 files changed, 33 insertions, 3 deletions

diff --git a/benchmarks/harness/__init__.py b/benchmarks/harness/__init__.py
index 61fd25f73..15aa2a69a 100644
--- a/benchmarks/harness/__init__.py
+++ b/benchmarks/harness/__init__.py
@@ -1,5 +1,5 @@
 # python3
-# Copyright 2019 Google LLC
+# Copyright 2019 The gVisor Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -15,18 +15,48 @@
 
 import getpass
 import os
+import subprocess
+import tempfile
 
 # LOCAL_WORKLOADS_PATH defines the path to use for local workloads. This is a
 # format string that accepts a single string parameter.
-LOCAL_WORKLOADS_PATH = os.path.join(
-    os.path.dirname(__file__), "../workloads/{}/tar.tar")
+LOCAL_WORKLOADS_PATH = os.path.dirname(__file__) + "/../workloads/{}/tar.tar"
 
 # REMOTE_WORKLOADS_PATH defines the path to use for storing the workloads on the
 # remote host. This is a format string that accepts a single string parameter.
 REMOTE_WORKLOADS_PATH = "workloads/{}"
 
+# INSTALLER_ROOT is the set of files that needs to be copied.
+INSTALLER_ARCHIVE = os.readlink(os.path.join(
+    os.path.dirname(__file__), "installers.tar"))
+
+# SSH_KEY_DIR holds SSH_PRIVATE_KEY for this run. bm-tools paramiko requires
+# keys generated with the '-t rsa -m PEM' options from ssh-keygen. This is
+# abstracted away from the user.
+SSH_KEY_DIR = tempfile.TemporaryDirectory()
+SSH_PRIVATE_KEY = "key"
+
 # DEFAULT_USER is the default user running this script.
 DEFAULT_USER = getpass.getuser()
 
 # DEFAULT_USER_HOME is the home directory of the user running the script.
 DEFAULT_USER_HOME = os.environ["HOME"] if "HOME" in os.environ else ""
+
+# Default directory to remotely installer "installer" targets.
+REMOTE_INSTALLERS_PATH = "installers"
+
+
+def make_key():
+  """Wraps a valid ssh key in a temporary directory."""
+  path = os.path.join(SSH_KEY_DIR.name, SSH_PRIVATE_KEY)
+  if not os.path.exists(path):
+    cmd = "ssh-keygen -t rsa -m PEM -b 4096 -f {key} -q -N".format(
+        key=path).split(" ")
+    cmd.append("")
+    subprocess.run(cmd, check=True)
+  return path
+
+
+def delete_key():
+  """Deletes temporary directory containing private key."""
+  SSH_KEY_DIR.cleanup()