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import logging
import re
import shutil
import subprocess
import time
class Device:
tcpip_device_re = re.compile(
r"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d{1,5}$"
)
EXEC_IN_LAVA = shutil.which("lava-send") is not None
def __init__(
self, serial_or_address, logcat_output_filename, worker_job_id=None
):
self.serial_or_address = serial_or_address
self.is_tcpip_device = bool(
Device.tcpip_device_re.match(self.serial_or_address)
)
self.logcat_output_file = open(logcat_output_filename, "w")
self.logcat = subprocess.Popen(
["adb", "-s", serial_or_address, "logcat"],
stdout=self.logcat_output_file,
)
self.worker_job_id = worker_job_id
self.worker_handshake_iteration = 1
self._is_available = True
def ensure_available(self, logger, timeout_secs=30):
"""
High level function that encapsulates all logic for ensuring that a device is accessible.
Returns a boolean indicating if this function succeeded. This function will only return once
the device is available or no other options for reestablishing a connection are known.
Keyword arguments:
tradefed_pexpect -- pexpect spawnu object that allows to communicate with TradeFed
logger -- logging.getLogger() object to paste some debug information
"""
if self.check_available(timeout_secs=timeout_secs):
self._is_available = True
logger.info("adb device %s is alive" % self.serial_or_address)
# Tell the hosting worker that everything is fine
self.worker_handshake("continue")
return self._is_available
self._is_available = False
logger.debug(
"adb connection to %s lost! Trying to reconnect..."
% self.serial_or_address
)
# Tell the hosting worker that something is broken
# This call will only return once the device is up and running again, if possible.
self.worker_handshake("reconnect")
if not self.try_reconnect():
logger.warning(
"adb connection to %s lost and reconnect failed!"
% self.serial_or_address
)
return self._is_available
logger.debug("Successfully reconnected to %s!" % self.serial_or_address)
# TODO should check if TradeFed detected the device.
self._is_available = True
return self._is_available
def is_available(self):
"""
High level function that checks if the last ensure_available()
invocation led to a positive result.
"""
return self._is_available
def check_available(self, timeout_secs=30):
return (
subprocess.run(
[
"timeout",
str(timeout_secs),
"adb",
"-s",
self.serial_or_address,
"shell",
"echo",
"%s:" % self.serial_or_address,
"OK",
]
).returncode == 0
)
def try_reconnect(self, reconnectTimeoutSecs=60):
# NOTE: When running inside LAVA, self.is_tcpip_device == (self.worker_job_id is not None).
# However, when running this script directly, there is no such thing as a remote worker ID,
# and reconnect attempts to remote devices may still be useful.
if not self.is_tcpip_device:
# On local devices, we can currently only try to recover from fastboot.
# This would be a good point for a hard reset.
# NOTE: If the boot/reboot process takes longer than the specified timeout, this
# function will return failure, but the device can still become accessible in the next
# iteration of device availability checks.
fastbootRebootTimeoutSecs = (
10
) # There is no point in waiting longer for fastboot
subprocess.run(
[
"timeout",
str(fastbootRebootTimeoutSecs),
"fastboot",
"-s",
self.serial_or_address,
"reboot",
]
)
bootTimeoutSecs = max(
10, int(reconnectTimeoutSecs) - fastbootRebootTimeoutSecs
)
return (
subprocess.run(
[
"sh",
"-c",
". ../../../lib/sh-test-lib && . ../../../lib/android-test-lib && "
'export ANDROID_SERIAL="%s" && wait_boot_completed %s'
% (self.serial_or_address, bootTimeoutSecs),
]
).returncode == 0
)
# adb may not yet have realized that the connection is broken
subprocess.run(["adb", "disconnect", self.serial_or_address])
time.sleep(
5
) # adb connect ~often~ fails when called ~directly~ after disconnect.
if (
subprocess.run(
[
"timeout",
str(reconnectTimeoutSecs),
"adb",
"connect",
self.serial_or_address,
]
).returncode != 0
):
return False
if not self.check_available():
return False
# reestablish logcat connection
self.logcat.kill()
self.logcat = subprocess.Popen(
["adb", "-s", self.serial_or_address, "logcat"],
stdout=self.logcat_output_file,
)
return True
def release(self):
self.logcat.kill()
self.logcat_output_file.close()
self.worker_handshake("release")
def worker_handshake(self, command):
"""
This function implements the counterpart of wait-and-keep-local-device-accessible.yaml
It is basically a no-op when running outside LAVA.
"""
# Nothing to do for local devices and nothing to do when not called by LAVA.
if self.worker_job_id is None or not Device.EXEC_IN_LAVA:
self.worker_handshake_iteration += 1
return True
# All commands except release are followed by a lava-send from the worker side.
wait_for_acc = command != "release"
subprocess.run(
[
"lava-send",
"master-sync-%s-%s"
% (self.worker_job_id, str(self.worker_handshake_iteration)),
"command=%s" % command,
]
)
if wait_for_acc:
subprocess.run(
[
"lava-wait",
"worker-sync-%s-%s"
% (
self.worker_job_id,
str(self.worker_handshake_iteration),
),
]
)
# TODO could check result variable from MultiNode cache
self.worker_handshake_iteration += 1
return True
class RetryCheck:
def __init__(self, total_max_retries, retries_if_unchanged):
self.total_max_retries = total_max_retries
self.retries_if_unchanged = retries_if_unchanged
self.current_retry = 0
self.current_unchanged = 0
self.last_value = None
def post_result(self, value):
self.current_retry += 1
if value == self.last_value:
self.current_unchanged += 1
else:
self.current_unchanged = 1
self.last_value = value
def should_continue(self):
return (
self.current_retry < self.total_max_retries and self.current_unchanged < self.retries_if_unchanged
)
class ResultSummary:
def __init__(
self, failure_count, modules_completed, modules_total, timestamp
):
self.failure_count = int(failure_count)
self.modules_completed = int(modules_completed)
self.modules_total = int(modules_total)
self.timestamp = timestamp
def was_successful(self):
return self.failure_count == 0 and self.all_modules_completed()
def all_modules_completed(self):
return self.modules_completed == self.modules_total
def __eq__(self, other):
if isinstance(self, other.__class__):
return self.__dict__ == other.__dict__
return NotImplemented
|
