DeviceManager

public class DeviceManager
extends Object implements IDeviceManager

java.lang.Object
↳	com.android.tradefed.device.DeviceManager

Summary

Nested classes
`class`	`DeviceManager.FastbootDevice` Representation of a device in Fastboot mode.

Fields
`public static final String`	`UNKNOWN_DISPLAY_STRING` Display string for unknown properties
`protected DeviceMonitorMultiplexer`	`mDvcMon`
`protected boolean`	`mFastbootEnabled`

Public constructors
`DeviceManager()` The DeviceManager should be retrieved from the `GlobalConfiguration`

Public methods
`void`	`addAvailableDevice(IDevice stubDevice)`
`void`	`addDeviceMonitor(IDeviceMonitor mon)` Adds a `IDeviceMonitor`
`void`	`addFastbootListener(IDeviceManager.IFastbootListener listener)` Informs the manager that a listener is interested in fastboot state changes.
`ITestDevice`	`allocateDevice(IDeviceSelection options, boolean isTemporary)` Request a device for testing that meets certain criteria.
`ITestDevice`	`allocateDevice(IDeviceSelection options)` Request a device for testing that meets certain criteria.
`ITestDevice`	`allocateDevice()` Request a physical device for testing
`ITestDevice`	`connectToTcpDevice(String ipAndPort)` Connect to a device with adb-over-tcp This method allocates a new device, which should eventually be freed via `disconnectFromTcpDevice(com.android.tradefed.device.ITestDevice)` The returned `ITestDevice` will be online, but may not be responsive.
`boolean`	`disconnectFromTcpDevice(ITestDevice tcpDevice)` Disconnect from an adb-over-tcp connected device.
`void`	`displayDevicesInfo(PrintWriter stream, boolean includeStub)` Output a user-friendly description containing list of known devices, their state, and values for commonly used `IDeviceSelection` options.
`String`	`executeGlobalAdbCommand(String... cmdArgs)` Execute a adb command not targeted to a particular device eg.
`ITestDevice`	`forceAllocateDevice(String serial)` Rudely allocate a device, even if its not currently available.
`void`	`freeDevice(ITestDevice device, FreeDeviceState deviceState)` Return a device to the pool Attempts to return a device that hasn't been previously allocated will be ignored.
`String`	`getAdbPath()` Returns the path to the adb binary to use.
`String`	`getAdbVersion()` Get the adb version currently in use by the device manager.
`int`	`getAvailableFlashingPermits()` Get the number of available flashing permits
`DeviceDescriptor`	`getDeviceDescriptor(String serial)` Returns the DeviceDescriptor with the given serial.
`String`	`getFastbootPath()` Returns the path to the fastboot binary to use.
`void`	`init(IDeviceSelection globalDeviceFilter, globalDeviceMonitors, IManagedTestDeviceFactory deviceFactory)` Initialize the device manager.
`void`	`init(IDeviceSelection globalDeviceFilter, globalDeviceMonitors)` Initialize the device manager.
`void`	`init()` Initialize the device manager.
`boolean`	`isEmulator(String serial)` Determine if given serial represents a emulator
`boolean`	`isNullDevice(String serial)` Determine if given serial represents a null device
`void`	`killEmulator(ITestDevice device)` Shut down the given emulator.
`void`	`launchEmulator(ITestDevice device, long bootTimeout, IRunUtil runUtil, emulatorArgs)` Helper method to launch emulator.
	`listAllDevices()` Returns a list of DeviceDescriptors for all known devices
`ITestDevice`	`reconnectDeviceToTcp(ITestDevice usbDevice)` A helper method that switches the given usb device to adb-over-tcp mode, and then connects to it via `connectToTcpDevice(String)`.
`void`	`removeDeviceMonitor(IDeviceMonitor mon)` Removes a previously added `IDeviceMonitor`.
`void`	`removeFastbootListener(IDeviceManager.IFastbootListener listener)` Informs the manager that a listener is no longer interested in fastboot state changes.
`void`	`restartAdbBridge()` Restart (if `stopAdbBridge()` was called) adb bridge and services depend on adb connections.
`void`	`returnFlashingPermit()` Restore a flashing permit that we acquired previously
`void`	`stopAdbBridge()` Stop adb bridge and services depend on adb connections.
`void`	`takeFlashingPermit()` Request permission to flash.
`void`	`terminate()` Stops device monitoring services, and terminates the ddm library.
`void`	`terminateDeviceMonitor()` Stop the Device Monitors.
`void`	`terminateDeviceRecovery()` Stops the device recovery thread.
`void`	`terminateHard()` Like `terminate()`, but attempts to forcefully shut down adb as well.
`boolean`	`waitForFirstDeviceAdded(long timeout)` Wait until a first physical device is connected.

Fields

UNKNOWN_DISPLAY_STRING

public static final String UNKNOWN_DISPLAY_STRING

Display string for unknown properties

mDvcMon

protected DeviceMonitorMultiplexer mDvcMon

mFastbootEnabled

protected boolean mFastbootEnabled

Public constructors

DeviceManager

public DeviceManager ()

The DeviceManager should be retrieved from the GlobalConfiguration

Public methods

addAvailableDevice

public void addAvailableDevice (IDevice stubDevice)

Parameters
`stubDevice`	`IDevice`

addDeviceMonitor

public void addDeviceMonitor (IDeviceMonitor mon)

Adds a IDeviceMonitor

Parameters
`mon`	`IDeviceMonitor`

addFastbootListener

public void addFastbootListener (IDeviceManager.IFastbootListener listener)

Informs the manager that a listener is interested in fastboot state changes.

Currently a IDeviceManager will only monitor devices in fastboot if there are one or more active listeners.

TODO: this is a bit of a hack - find a better solution

allocateDevice

public ITestDevice allocateDevice (IDeviceSelection options, 
                boolean isTemporary)

Request a device for testing that meets certain criteria.

Parameters
`options`	`IDeviceSelection`: the `IDeviceSelection` the device should meet.
`isTemporary`	`boolean`: whether or not a temporary NullDevice should be created.

Returns
`ITestDevice`	a `ITestDevice` for testing, or `null` if one is not available

allocateDevice

public ITestDevice allocateDevice (IDeviceSelection options)

Request a device for testing that meets certain criteria.

Parameters
`options`	`IDeviceSelection`: the `IDeviceSelection` the device should meet.

Returns
`ITestDevice`	a `ITestDevice` for testing, or `null` if one is not available

allocateDevice

public ITestDevice allocateDevice ()

Request a physical device for testing

Returns
`ITestDevice`	a `ITestDevice` for testing, or `null` if one is not available

connectToTcpDevice

public ITestDevice connectToTcpDevice (String ipAndPort)

Connect to a device with adb-over-tcp

This method allocates a new device, which should eventually be freed via disconnectFromTcpDevice(com.android.tradefed.device.ITestDevice)

The returned ITestDevice will be online, but may not be responsive.

Note that performing action such as a reboot on a tcp connected device, will sever the tcp connection to the device, and result in a DeviceNotAvailableException

Parameters
`ipAndPort`	`String`: the original ip address and port of the device to connect to

Returns
`ITestDevice`	the `ITestDevice` or `null` if a tcp connection could not be formed

disconnectFromTcpDevice

public boolean disconnectFromTcpDevice (ITestDevice tcpDevice)

Disconnect from an adb-over-tcp connected device.

Switches the device back to usb mode, and frees it.

Parameters
`tcpDevice`	`ITestDevice`: the device currently in tcp mode, previously allocated via `connectToTcpDevice(String)`

Returns
`boolean`	`true` if switch to usb mode was successful

displayDevicesInfo

public void displayDevicesInfo (PrintWriter stream, 
                boolean includeStub)

Output a user-friendly description containing list of known devices, their state, and values for commonly used IDeviceSelection options.

Parameters
`stream`	`PrintWriter`: the `ERROR(/PrintWriter)` to output the description to
`includeStub`	`boolean`: Whether or not to display stub devices too.

executeGlobalAdbCommand

public String executeGlobalAdbCommand (String... cmdArgs)

Execute a adb command not targeted to a particular device eg. 'adb connect'

Returns
`String`	std output if the command succeedm null otherwise.

forceAllocateDevice

public ITestDevice forceAllocateDevice (String serial)

Rudely allocate a device, even if its not currently available.

Will have no effect if device is already allocated.

Parameters
`serial`	`String`: the device serial to allocate

Returns
`ITestDevice`	the `ITestDevice`, or `null` if it could not be allocated

freeDevice

public void freeDevice (ITestDevice device, 
                FreeDeviceState deviceState)

Return a device to the pool

Attempts to return a device that hasn't been previously allocated will be ignored.

Parameters
`device`	`ITestDevice`: the `ITestDevice` to free
`deviceState`	`FreeDeviceState`: the `FreeDeviceState`. Used to control if device is returned to available device pool.

getAdbPath

public String getAdbPath ()

Returns the path to the adb binary to use.

Returns
`String`

getAdbVersion

public String getAdbVersion ()

Get the adb version currently in use by the device manager.

Returns
`String`

getAvailableFlashingPermits

public int getAvailableFlashingPermits ()

Get the number of available flashing permits

Returns
`int`	Number of available flashing permits or Integer.MAX_VALUE if not available.

getDeviceDescriptor

public DeviceDescriptor getDeviceDescriptor (String serial)

Returns the DeviceDescriptor with the given serial.

Parameters
`serial`	`String`: serial number for the device to get

Returns
`DeviceDescriptor`	the `DeviceDescriptor` for the selected device, or null if the serial does not match a known device.

getFastbootPath

public String getFastbootPath ()

Returns the path to the fastboot binary to use.

Returns
`String`

init

public void init (IDeviceSelection globalDeviceFilter, 
                 globalDeviceMonitors, 
                IManagedTestDeviceFactory deviceFactory)

Initialize the device manager. This must be called once and only once before any other methods are called.

Parameters
`globalDeviceFilter`	`IDeviceSelection`
`globalDeviceMonitors`
`deviceFactory`	`IManagedTestDeviceFactory`

init

public void init (IDeviceSelection globalDeviceFilter, 
                 globalDeviceMonitors)

Initialize the device manager. This must be called once and only once before any other methods are called.

Parameters
`globalDeviceFilter`	`IDeviceSelection`: the device filter
`globalDeviceMonitors`

init

public void init ()

Initialize the device manager. This must be called once and only once before any other methods are called.

isEmulator

public boolean isEmulator (String serial)

Determine if given serial represents a emulator

Parameters
`serial`	`String`

Returns
`boolean`

isNullDevice

public boolean isNullDevice (String serial)

Determine if given serial represents a null device

Parameters
`serial`	`String`

Returns
`boolean`

killEmulator

public void killEmulator (ITestDevice device)

Shut down the given emulator.

Blocks until emulator disappears from adb. Will have no effect if emulator is already not available.

Parameters
`device`	`ITestDevice`: the `ITestDevice` representing emulator to shut down

Throws
`DeviceNotAvailableException`

launchEmulator

public void launchEmulator (ITestDevice device, 
                long bootTimeout, 
                IRunUtil runUtil, 
                 emulatorArgs)

Helper method to launch emulator.

Will launch the emulator as specified by the caller

Parameters
`device`	`ITestDevice`: the placeholder `ITestDevice` representing allocated emulator device
`bootTimeout`	`long`: the time in ms to wait for the emulator to boot
`emulatorArgs`	: command line arguments to launch the emulator

Throws
`DeviceNotAvailableException`

listAllDevices

public  listAllDevices ()

Returns a list of DeviceDescriptors for all known devices

Returns
	a list of `DeviceDescriptor` for all known devices

reconnectDeviceToTcp

public ITestDevice reconnectDeviceToTcp (ITestDevice usbDevice)

A helper method that switches the given usb device to adb-over-tcp mode, and then connects to it via connectToTcpDevice(String).

Parameters
`usbDevice`	`ITestDevice`: the device currently in usb mode

Returns
`ITestDevice`	the newly allocated `ITestDevice` in tcp mode or `null` if a tcp connection could not be formed

Throws
`DeviceNotAvailableException`

removeDeviceMonitor

public void removeDeviceMonitor (IDeviceMonitor mon)

Removes a previously added IDeviceMonitor. Has no effect if mon has not been added.

Parameters
`mon`	`IDeviceMonitor`

removeFastbootListener

public void removeFastbootListener (IDeviceManager.IFastbootListener listener)

Informs the manager that a listener is no longer interested in fastboot state changes.

restartAdbBridge

public void restartAdbBridge ()

Restart (if stopAdbBridge() was called) adb bridge and services depend on adb connections.

returnFlashingPermit

public void returnFlashingPermit ()

Restore a flashing permit that we acquired previously

stopAdbBridge

public void stopAdbBridge ()

Stop adb bridge and services depend on adb connections.

takeFlashingPermit

public void takeFlashingPermit ()

Request permission to flash. If the number of concurrent flashers is limited, this will wait in line in order to remain under the flash limit count.

terminate

public void terminate ()

Stops device monitoring services, and terminates the ddm library.

This must be called upon application termination.

terminateDeviceMonitor

public void terminateDeviceMonitor ()

Stop the Device Monitors.

terminateDeviceRecovery

public void terminateDeviceRecovery ()

Stops the device recovery thread.

terminateHard

public void terminateHard ()

Like terminate(), but attempts to forcefully shut down adb as well.

waitForFirstDeviceAdded

public boolean waitForFirstDeviceAdded (long timeout)

Wait until a first physical device is connected. If a device was connected before, it returns directly True. If no device was added, it returns false after timeout.

Parameters
`timeout`	`long`: time to wait in millisecond before returning false.

Returns
`boolean`

DeviceManager

Summary

Nested classes

Fields

Public constructors

Public methods

Fields

UNKNOWN_DISPLAY_STRING

mDvcMon

mFastbootEnabled

Public constructors

DeviceManager

Public methods

addAvailableDevice

addDeviceMonitor

addFastbootListener

allocateDevice

allocateDevice

allocateDevice

connectToTcpDevice

disconnectFromTcpDevice

displayDevicesInfo

executeGlobalAdbCommand

forceAllocateDevice

freeDevice

getAdbPath

getAdbVersion

getAvailableFlashingPermits

getDeviceDescriptor

getFastbootPath

init

init

init

isEmulator

isNullDevice

killEmulator

launchEmulator

listAllDevices

reconnectDeviceToTcp

removeDeviceMonitor

removeFastbootListener

restartAdbBridge

returnFlashingPermit

stopAdbBridge

takeFlashingPermit

terminate

terminateDeviceMonitor

terminateDeviceRecovery

terminateHard

waitForFirstDeviceAdded