#!/usr/bin/env python # # Copyright 2016 - The Android Open Source Project # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """A client that manages Android compute engine instances. ** AndroidComputeClient ** AndroidComputeClient derives from ComputeClient. It manges a google compute engine project that is setup for running Android instances. It knows how to create android GCE images and instances. ** Class hierarchy ** base_cloud_client.BaseCloudApiClient ^ | gcompute_client.ComputeClient ^ | gcompute_client.AndroidComputeClient """ import getpass import logging import os import uuid from acloud import errors from acloud.internal import constants from acloud.internal.lib import gcompute_client from acloud.internal.lib import utils logger = logging.getLogger(__name__) class AndroidComputeClient(gcompute_client.ComputeClient): """Client that manages Anadroid Virtual Device.""" IMAGE_NAME_FMT = "img-{uuid}-{build_id}-{build_target}" DATA_DISK_NAME_FMT = "data-{instance}" BOOT_COMPLETED_MSG = "VIRTUAL_DEVICE_BOOT_COMPLETED" BOOT_STARTED_MSG = "VIRTUAL_DEVICE_BOOT_STARTED" BOOT_TIMEOUT_SECS = 5 * 60 # 5 mins, usually it should take ~2 mins BOOT_CHECK_INTERVAL_SECS = 10 OPERATION_TIMEOUT_SECS = 20 * 60 # Override parent value, 20 mins NAME_LENGTH_LIMIT = 63 # If the generated name ends with '-', replace it with REPLACER. REPLACER = "e" def __init__(self, acloud_config, oauth2_credentials): """Initialize. Args: acloud_config: An AcloudConfig object. oauth2_credentials: An oauth2client.OAuth2Credentials instance. """ super(AndroidComputeClient, self).__init__(acloud_config, oauth2_credentials) self._zone = acloud_config.zone self._machine_type = acloud_config.machine_type self._min_machine_size = acloud_config.min_machine_size self._network = acloud_config.network self._orientation = acloud_config.orientation self._resolution = acloud_config.resolution self._metadata = acloud_config.metadata_variable.copy() self._ssh_public_key_path = acloud_config.ssh_public_key_path self._launch_args = acloud_config.launch_args self._instance_name_pattern = acloud_config.instance_name_pattern self._AddPerInstanceSshkey() def _AddPerInstanceSshkey(self): """Add per-instance ssh key. Assign the ssh publick key to instacne then use ssh command to control remote instance via the ssh publick key. Added sshkey for two users. One is vsoc01, another is current user. """ if self._ssh_public_key_path: rsa = self._LoadSshPublicKey(self._ssh_public_key_path) logger.info("ssh_public_key_path is specified in config: %s, " "will add the key to the instance.", self._ssh_public_key_path) self._metadata["sshKeys"] = "{0}:{2}\n{1}:{2}".format(getpass.getuser(), constants.GCE_USER, rsa) else: logger.warning( "ssh_public_key_path is not specified in config, " "only project-wide key will be effective.") @classmethod def _FormalizeName(cls, name): """Formalize the name to comply with RFC1035. The name must be 1-63 characters long and match the regular expression [a-z]([-a-z0-9]*[a-z0-9])? which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash. Args: name: A string. Returns: name: A string that complies with RFC1035. """ name = name.replace("_", "-").lower() name = name[:cls.NAME_LENGTH_LIMIT] if name[-1] == "-": name = name[:-1] + cls.REPLACER return name def _CheckMachineSize(self): """Check machine size. Check if the desired machine type |self._machine_type| meets the requirement of minimum machine size specified as |self._min_machine_size|. Raises: errors.DriverError: if check fails. """ if self.CompareMachineSize(self._machine_type, self._min_machine_size, self._zone) < 0: raise errors.DriverError( "%s does not meet the minimum required machine size %s" % (self._machine_type, self._min_machine_size)) @classmethod def GenerateImageName(cls, build_target=None, build_id=None): """Generate an image name given build_target, build_id. Args: build_target: Target name, e.g. "aosp_cf_x86_phone-userdebug" build_id: Build id, a string, e.g. "2263051", "P2804227" Returns: A string, representing image name. """ if not build_target and not build_id: return "image-" + uuid.uuid4().hex name = cls.IMAGE_NAME_FMT.format( build_target=build_target, build_id=build_id, uuid=uuid.uuid4().hex[:8]) return cls._FormalizeName(name) @classmethod def GetDataDiskName(cls, instance): """Get data disk name for an instance. Args: instance: An instance_name. Returns: The corresponding data disk name. """ name = cls.DATA_DISK_NAME_FMT.format(instance=instance) return cls._FormalizeName(name) def GenerateInstanceName(self, build_target=None, build_id=None): """Generate an instance name given build_target, build_id. Target is not used as instance name has a length limit. Args: build_target: Target name, e.g. "aosp_cf_x86_phone-userdebug" build_id: Build id, a string, e.g. "2263051", "P2804227" Returns: A string, representing instance name. """ name = self._instance_name_pattern.format(build_target=build_target, build_id=build_id, uuid=uuid.uuid4().hex[:8]) return self._FormalizeName(name) def CreateDisk(self, disk_name, source_image, size_gb, zone=None, source_project=None, disk_type=gcompute_client.PersistentDiskType.STANDARD): """Create a gce disk. Args: disk_name: String, name of disk. source_image: String, name to the image name. size_gb: Integer, size in gigabytes. zone: String, name of the zone, e.g. us-central1-b. source_project: String, required if the image is located in a different project. disk_type: String, a value from PersistentDiskType, STANDARD for regular hard disk or SSD for solid state disk. """ if self.CheckDiskExists(disk_name, self._zone): raise errors.DriverError( "Failed to create disk %s, already exists." % disk_name) if source_image and not self.CheckImageExists(source_image): raise errors.DriverError( "Failed to create disk %s, source image %s does not exist." % (disk_name, source_image)) super(AndroidComputeClient, self).CreateDisk( disk_name, source_image=source_image, size_gb=size_gb, zone=zone or self._zone) @staticmethod def _LoadSshPublicKey(ssh_public_key_path): """Load the content of ssh public key from a file. Args: ssh_public_key_path: String, path to the public key file. E.g. ~/.ssh/acloud_rsa.pub Returns: String, content of the file. Raises: errors.DriverError if the public key file does not exist or the content is not valid. """ key_path = os.path.expanduser(ssh_public_key_path) if not os.path.exists(key_path): raise errors.DriverError( "SSH public key file %s does not exist." % key_path) with open(key_path) as f: rsa = f.read() rsa = rsa.strip() if rsa else rsa utils.VerifyRsaPubKey(rsa) return rsa # pylint: disable=too-many-locals, arguments-differ @utils.TimeExecute("Creating GCE Instance") def CreateInstance(self, instance, image_name, machine_type=None, metadata=None, network=None, zone=None, disk_args=None, image_project=None, gpu=None, extra_disk_name=None, avd_spec=None, extra_scopes=None, tags=None): """Create a gce instance with a gce image. Args: instance: String, instance name. image_name: String, source image used to create this disk. machine_type: String, representing machine_type, e.g. "n1-standard-1" metadata: Dict, maps a metadata name to its value. network: String, representing network name, e.g. "default" zone: String, representing zone name, e.g. "us-central1-f" disk_args: A list of extra disk args (strings), see _GetDiskArgs for example, if None, will create a disk using the given image. image_project: String, name of the project where the image belongs. Assume the default project if None. gpu: String, type of gpu to attach. e.g. "nvidia-tesla-k80", if None no gpus will be attached. For more details see: https://cloud.google.com/compute/docs/gpus/add-gpus extra_disk_name: String,the name of the extra disk to attach. avd_spec: AVDSpec object that tells us what we're going to create. extra_scopes: List, extra scopes (strings) to be passed to the instance. tags: A list of tags to associate with the instance. e.g. ["http-server", "https-server"] """ self._CheckMachineSize() disk_args = self._GetDiskArgs(instance, image_name) metadata = self._metadata.copy() metadata["cfg_sta_display_resolution"] = self._resolution metadata["t_force_orientation"] = self._orientation metadata[constants.INS_KEY_AVD_TYPE] = avd_spec.avd_type # Use another METADATA_DISPLAY to record resolution which will be # retrieved in acloud list cmd. We try not to use cvd_01_x_res # since cvd_01_xxx metadata is going to deprecated by cuttlefish. metadata[constants.INS_KEY_DISPLAY] = ("%sx%s (%s)" % ( avd_spec.hw_property[constants.HW_X_RES], avd_spec.hw_property[constants.HW_Y_RES], avd_spec.hw_property[constants.HW_ALIAS_DPI])) super(AndroidComputeClient, self).CreateInstance( instance, image_name, self._machine_type, metadata, self._network, self._zone, disk_args, image_project, gpu, extra_disk_name, extra_scopes=extra_scopes, tags=tags) def CheckBootFailure(self, serial_out, instance): """Determine if serial output has indicated any boot failure. Subclass has to define this function to detect failures in the boot process Args: serial_out: string instance: string, instance name. Raises: Raises errors.DeviceBootError exception if a failure is detected. """ pass def CheckBoot(self, instance): """Check once to see if boot completes. Args: instance: string, instance name. Returns: True if the BOOT_COMPLETED_MSG or BOOT_STARTED_MSG appears in serial port output, otherwise False. """ try: serial_out = self.GetSerialPortOutput(instance=instance, port=1) self.CheckBootFailure(serial_out, instance) return ((self.BOOT_COMPLETED_MSG in serial_out) or (self.BOOT_STARTED_MSG in serial_out)) except errors.HttpError as e: if e.code == 400: logger.debug("CheckBoot: Instance is not ready yet %s", str(e)) return False raise def WaitForBoot(self, instance, boot_timeout_secs=None): """Wait for boot to completes or hit timeout. Args: instance: string, instance name. boot_timeout_secs: Integer, the maximum time in seconds used to wait for the AVD to boot. """ boot_timeout_secs = boot_timeout_secs or self.BOOT_TIMEOUT_SECS logger.info("Waiting for instance to boot up %s for %s secs", instance, boot_timeout_secs) timeout_exception = errors.DeviceBootTimeoutError( "Device %s did not finish on boot within timeout (%s secs)" % (instance, boot_timeout_secs)), utils.PollAndWait( func=self.CheckBoot, expected_return=True, timeout_exception=timeout_exception, timeout_secs=boot_timeout_secs, sleep_interval_secs=self.BOOT_CHECK_INTERVAL_SECS, instance=instance) logger.info("Instance boot completed: %s", instance) def GetInstanceIP(self, instance, zone=None): """Get Instance IP given instance name. Args: instance: String, representing instance name. zone: String, representing zone name, e.g. "us-central1-f" Returns: ssh.IP object, that stores internal and external ip of the instance. """ return super(AndroidComputeClient, self).GetInstanceIP( instance, zone or self._zone) def GetSerialPortOutput(self, instance, zone=None, port=1): """Get serial port output. Args: instance: string, instance name. zone: String, representing zone name, e.g. "us-central1-f" port: int, which COM port to read from, 1-4, default to 1. Returns: String, contents of the output. Raises: errors.DriverError: For malformed response. """ return super(AndroidComputeClient, self).GetSerialPortOutput( instance, zone or self._zone, port) def GetInstanceNamesByIPs(self, ips, zone=None): """Get Instance names by IPs. This function will go through all instances, which could be slow if there are too many instances. However, currently GCE doesn't support search for instance by IP. Args: ips: A set of IPs. zone: String, representing zone name, e.g. "us-central1-f" Returns: A dictionary where key is ip and value is instance name or None if instance is not found for the given IP. """ return super(AndroidComputeClient, self).GetInstanceNamesByIPs( ips, zone or self._zone)