Support delete local instance in acloud deleted function.
Bug: 117474343
Test: m acloud && atest acloud_test && acloud delete
Change-Id: I925308163e5d55a1dbce1a11f13802557bd840f5
diff --git a/internal/lib/utils.py b/internal/lib/utils.py
index 4f16c85..e537821 100755
--- a/internal/lib/utils.py
+++ b/internal/lib/utils.py
@@ -23,6 +23,7 @@
import collections
import errno
import getpass
+import grp
import logging
import os
import shutil
@@ -58,6 +59,8 @@
ForwardedPorts = collections.namedtuple("ForwardedPorts", [constants.VNC_PORT,
constants.ADB_PORT])
_VNC_BIN = "ssvnc"
+_CMD_PGREP = "pgrep"
+_CMD_SG = "sg "
_CMD_START_VNC = "%(bin)s vnc://127.0.01:%(port)d"
_CMD_INSTALL_SSVNC = "sudo apt-get --assume-yes install ssvnc"
_ENV_DISPLAY = "DISPLAY"
@@ -881,3 +884,80 @@
# Return the larger scale-down ratio.
return scale_h if scale_h < scale_w else scale_w
+
+
+def IsCommandRunning(command):
+ """Check if command is running.
+
+ Args:
+ command: String of command name.
+
+ Returns:
+ Boolean, True if command is running. False otherwise.
+ """
+ try:
+ with open(os.devnull, "w") as dev_null:
+ subprocess.check_call([_CMD_PGREP, command],
+ stderr=dev_null, stdout=dev_null)
+ return True
+ except subprocess.CalledProcessError:
+ return False
+
+
+def AddUserGroupsToCmd(cmd, user_groups):
+ """Add the user groups to the command if necessary.
+
+ As part of local host setup to enable local instance support, the user is
+ added to certain groups. For those settings to take effect systemwide
+ requires the user to log out and log back in. In the scenario where the
+ user has run setup and hasn't logged out, we still want them to be able to
+ launch a local instance so add the user to the groups as part of the
+ command to ensure success.
+
+ The reason using here-doc instead of '&' is all operations need to be ran in
+ ths same pid. Here's an example cmd:
+ $ sg kvm << EOF
+ sg libvirt
+ sg cvdnetwork
+ launch_cvd --cpus 2 --x_res 1280 --y_res 720 --dpi 160 --memory_mb 4096
+ EOF
+
+ Args:
+ cmd: String of the command to prepend the user groups to.
+ user_groups: List of user groups name.(String)
+
+ Returns:
+ String of the command with the user groups prepended to it if necessary,
+ otherwise the same existing command.
+ """
+ user_group_cmd = ""
+ if not CheckUserInGroups(user_groups):
+ logger.debug("Need to add user groups to the command")
+ for idx, group in enumerate(user_groups):
+ user_group_cmd += _CMD_SG + group
+ if idx == 0:
+ user_group_cmd += " <<EOF\n"
+ else:
+ user_group_cmd += "\n"
+ cmd += "\nEOF"
+ user_group_cmd += cmd
+ logger.debug("user group cmd: %s", user_group_cmd)
+ return user_group_cmd
+
+
+def CheckUserInGroups(group_name_list):
+ """Check if the current user is in the group.
+
+ Args:
+ group_name_list: The list of group name.
+ Returns:
+ True if current user is in all the groups.
+ """
+ logger.info("Checking if user is in following groups: %s", group_name_list)
+ current_groups = [grp.getgrgid(g).gr_name for g in os.getgroups()]
+ all_groups_present = True
+ for group in group_name_list:
+ if group not in current_groups:
+ all_groups_present = False
+ logger.info("missing group: %s", group)
+ return all_groups_present