abstract class Job extends AbstractQueuedJob (View source)

Traits

Provides extensions to this object to integrate it with standard config API methods.

Allows an object to have extensions applied to it.

Allows an object to declare a set of custom methods

Config options

extensions array

An array of extension names and parameters to be applied to this object upon construction.

from  Extensible
unextendable_classes array

Classes that cannot be extended

from  Extensible
chunk_size int

Number of URLs processed during one call of AbstractQueuedJob::process() This number should be set to a value which represents number of URLs which is reasonable to process in one go This number will vary depending on project, more specifically it depends on:

  • time to render your pages
  • infrastructure
urls_per_job int

Number of URLs per job allows you to split work into multiple smaller jobs instead of having one large job This is useful if you're running a queue setup will parallel processing or if you have too many URLs in general If this number is too high you're limiting the parallel processing opportunity If this number is too low you're using your resources inefficiently as every job processing has a fixed overhead which adds up if there are too many jobs

Properties

protected stdClass $jobData from  AbstractQueuedJob
protected array $messages from  AbstractQueuedJob
protected int $totalSteps from  AbstractQueuedJob
protected int $currentStep from  AbstractQueuedJob
protected bool $isComplete from  AbstractQueuedJob
protected static array $extra_methods

Custom method sources

from  CustomMethods
protected array $extra_method_registers

Name of methods to invoke by defineMethods for this instance

from  CustomMethods
protected static array $built_in_methods

Non-custom public methods.

from  CustomMethods
protected Extension[] $extension_instances from  Extensible
protected callable[][] $beforeExtendCallbacks

List of callbacks to call prior to extensions having extend called on them, each grouped by methodName.

from  Extensible
protected callable[][] $afterExtendCallbacks

List of callbacks to call after extensions having extend called on them, each grouped by methodName.

from  Extensible
array $URLsToProcess
array $ProcessedURLs

Methods

public
__construct($params = array())

Extensions can have a construct but don't have too.

public
string
getTitle()

No description

protected
setObject(DataObject $object, string $name = 'Object')

Sets a data object for persisting by adding its id and type to the serialised vars

protected
DataObject|null
getObject(string $name = 'Object')

No description

public
string
getSignature()

Return a signature for this queued job

protected
string
randomSignature()

Generate a somewhat random signature

public
getJobType()

By default jobs should just go into the default processing queue

public
int|null
getRunAsMemberID()

Static cache manipulation jobs need to run without a user this is because we don't want any session related data to become part of URLs For example stage GET param is injected into URLs when user is logged in This is problematic as stage param must not be present in statically published URLs as they always refer to live content Including stage param in visiting URL is meant to bypass static cache and redirect to admin login this is something we definitely don't want for statically cached pages

public
setup()

Performs setup tasks the first time this job is run.

public
prepareForRestart()

Run when an already setup job is being restarted.

public
process()

Do some processing yourself!

public
jobFinished()

Method for determining whether the job is finished - you may override it if there's more to it than just this

public
afterComplete()

Called when the job is determined to be 'complete'

public
getJobData()

No description

public
setJobData(int $totalSteps, int $currentStep, bool $isComplete, stdClass $jobData, array $messages)

No description

public
array|null
getCustomConfig()

Gets custom config settings to use when running the job.

public
setCustomConfig(array $config)

Sets custom config settings to use when the job is run.

public
addMessage(string $message, string $severity = 'INFO')

No description

public
__set(mixed $name, mixed $value)

Convenience methods for setting and getting job data

public
mixed
__get(mixed $name)

Retrieve some job data

public static 
config()

Get a configuration accessor for this class. Short hand for Config::inst()->get($this->class, .....).

public
mixed
uninherited(string $name)

Gets the uninherited value for the given config option

public
mixed
__call(string $method, array $arguments)

Attempts to locate and call a method dynamically added to a class at runtime if a default cannot be located

protected
defineMethods()

Adds any methods from Extension instances attached to this object.

protected
registerExtraMethodCallback(string $name, callable $callback)

Register an callback to invoke that defines extra methods

public
bool
hasMethod(string $method)

Return TRUE if a method exists on this object

protected
bool
hasCustomMethod($method)

Determines if a custom method with this name is defined.

protected
array
getExtraMethodConfig(string $method)

Get meta-data details on a named method

public
array
allMethodNames(bool $custom = false)

Return the names of all the methods available on this object

protected static 
array
findBuiltInMethods(string|object $class = null)

Get all public built in methods for this class

protected
array
findMethodsFrom(object $object)

Find all methods on the given object.

protected
addMethodsFrom(string $property, string|int $index = null)

Add all the methods from an object property.

protected
removeMethodsFrom(string $property, string|int $index = null)

Add all the methods from an object property (which is an Extension) to this object.

protected
addWrapperMethod(string $method, string $wrap)

Add a wrapper method - a method which points to another method with a different name. For example, Thumbnail(x) can be wrapped to generateThumbnail(x)

protected
addCallbackMethod(string $method, callable $callback)

Add callback as a method.

protected
beforeExtending(string $method, callable $callback)

Allows user code to hook into Object::extend prior to control being delegated to extensions. Each callback will be reset once called.

protected
afterExtending(string $method, callable $callback)

Allows user code to hook into Object::extend after control being delegated to extensions. Each callback will be reset once called.

protected
defineExtensionMethods()

Adds any methods from Extension instances attached to this object.

public static 
bool
add_extension(string $classOrExtension, string $extension = null)

Add an extension to a specific class.

public static 
remove_extension(string $extension)

Remove an extension from a class.

public static 
array
get_extensions(string $class = null, bool $includeArgumentString = false)

No description

public static 
array|null
get_extra_config_sources(string $class = null)

Get extra config sources for this class

public static 
bool
has_extension(string $classOrExtension, string $requiredExtension = null, bool $strict = false)

Return TRUE if a class has a specified extension.

public
array
invokeWithExtensions(string $method, mixed ...$arguments)

Calls a method if available on both this object and all applied Extensions, and then attempts to merge all results into an array

public
array
extend(string $method, mixed ...$arguments)

Run the given function on all of this object's extensions. Note that this method originally returned void, so if you wanted to return results, you're hosed

public
Extension|null
getExtensionInstance(string $extension)

Get an extension instance attached to this object by name.

public
bool
hasExtension(string $extension)

Returns TRUE if this object instance has a specific extension applied in $extension_instances. Extension instances are initialized at constructor time, meaning if you use add_extension() afterwards, the added extension will just be added to new instances of the extended class. Use the static method has_extension() to check if a class (not an instance) has a specific extension.

public
getExtensionInstances()

Get all extension instances for this specific object instance.

public
void
hydrate(array $urls, string|null $message)

Use this method to populate newly created job with data

public
int
getUrlsPerJob()

No description

protected
void
processUrl(string $url, int $priority)

Implement this method to process URL

protected
void
markUrlAsProcessed(string $url)

Move URL to list of processed URLs and update job step to indicate progress indication of progress is important for jobs which take long time to process jobs that do not indicate progress may be identified as stalled by the queue and may end up paused

protected
void
updateCompletedState()

Check if job is complete and update the job state if needed

protected
int
getChunkSize()

No description

protected
handleFailedUrl(string $url, array $meta)

This function can be overridden to handle the case of failure of specific URL processing such case is not handled by default which results in all such errors being effectively silenced

Details

__construct($params = array())

Extensions can have a construct but don't have too.

Without a construct, it's impossible to create a job in the CMS

Parameters

$params

abstract string getTitle()

No description

Return Value

string

protected setObject(DataObject $object, string $name = 'Object')

Sets a data object for persisting by adding its id and type to the serialised vars

Parameters

DataObject $object
string $name

A name to give it, if you want to store more than one

protected DataObject|null getObject(string $name = 'Object')

No description

Parameters

string $name

Return Value

DataObject|null

string getSignature()

Return a signature for this queued job

Return Value

string

protected string randomSignature()

Generate a somewhat random signature

useful if you're want to make sure something is always added

Return Value

string

getJobType()

By default jobs should just go into the default processing queue

int|null getRunAsMemberID()

Static cache manipulation jobs need to run without a user this is because we don't want any session related data to become part of URLs For example stage GET param is injected into URLs when user is logged in This is problematic as stage param must not be present in statically published URLs as they always refer to live content Including stage param in visiting URL is meant to bypass static cache and redirect to admin login this is something we definitely don't want for statically cached pages

Return Value

int|null

setup()

Performs setup tasks the first time this job is run.

This is only executed once for every job. If you want to run something on every job restart, use the prepareForRestart method.

prepareForRestart()

Run when an already setup job is being restarted.

process()

Do some processing yourself!

jobFinished()

Method for determining whether the job is finished - you may override it if there's more to it than just this

afterComplete()

Called when the job is determined to be 'complete'

getJobData()

No description

setJobData(int $totalSteps, int $currentStep, bool $isComplete, stdClass $jobData, array $messages)

No description

Parameters

int $totalSteps
int $currentStep
bool $isComplete
stdClass $jobData
array $messages

array|null getCustomConfig()

Gets custom config settings to use when running the job.

Return Value

array|null

setCustomConfig(array $config)

Sets custom config settings to use when the job is run.

Parameters

array $config

addMessage(string $message, string $severity = 'INFO')

No description

Parameters

string $message
string $severity

__set(mixed $name, mixed $value)

Convenience methods for setting and getting job data

Parameters

mixed $name
mixed $value

mixed __get(mixed $name)

Retrieve some job data

Parameters

mixed $name

Return Value

mixed

static Config_ForClass config()

Get a configuration accessor for this class. Short hand for Config::inst()->get($this->class, .....).

Return Value

Config_ForClass

mixed uninherited(string $name)

Gets the uninherited value for the given config option

Parameters

string $name

Return Value

mixed

mixed __call(string $method, array $arguments)

Attempts to locate and call a method dynamically added to a class at runtime if a default cannot be located

You can add extra methods to a class using Extensions}, {@link Object::createMethod() or Object::addWrapperMethod()

Parameters

string $method
array $arguments

Return Value

mixed

Exceptions

BadMethodCallException

protected defineMethods()

Adds any methods from Extension instances attached to this object.

All these methods can then be called directly on the instance (transparently mapped through __call()}), or called explicitly through {@link extend().

protected registerExtraMethodCallback(string $name, callable $callback)

Register an callback to invoke that defines extra methods

Parameters

string $name
callable $callback

bool hasMethod(string $method)

Return TRUE if a method exists on this object

This should be used rather than PHP's inbuild method_exists() as it takes into account methods added via extensions

Parameters

string $method

Return Value

bool

protected bool hasCustomMethod($method)

Determines if a custom method with this name is defined.

Parameters

$method

Return Value

bool

protected array getExtraMethodConfig(string $method)

Get meta-data details on a named method

Parameters

string $method

Return Value

array

List of custom method details, if defined for this method

array allMethodNames(bool $custom = false)

Return the names of all the methods available on this object

Parameters

bool $custom

include methods added dynamically at runtime

Return Value

array

Map of method names with lowercase keys

static protected array findBuiltInMethods(string|object $class = null)

Get all public built in methods for this class

Parameters

string|object $class

Class or instance to query methods from (defaults to static::class)

Return Value

array

Map of methods with lowercase key name

protected array findMethodsFrom(object $object)

Find all methods on the given object.

Parameters

object $object

Return Value

array

protected addMethodsFrom(string $property, string|int $index = null)

Add all the methods from an object property.

Parameters

string $property

the property name

string|int $index

an index to use if the property is an array

Exceptions

InvalidArgumentException

protected removeMethodsFrom(string $property, string|int $index = null)

Add all the methods from an object property (which is an Extension) to this object.

Parameters

string $property

the property name

string|int $index

an index to use if the property is an array

protected addWrapperMethod(string $method, string $wrap)

Add a wrapper method - a method which points to another method with a different name. For example, Thumbnail(x) can be wrapped to generateThumbnail(x)

Parameters

string $method

the method name to wrap

string $wrap

the method name to wrap to

protected addCallbackMethod(string $method, callable $callback)

Add callback as a method.

Parameters

string $method

Name of method

callable $callback

Callback to invoke. Note: $this is passed as first parameter to this callback and then $args as array

protected beforeExtending(string $method, callable $callback)

Allows user code to hook into Object::extend prior to control being delegated to extensions. Each callback will be reset once called.

Parameters

string $method

The name of the method to hook into

callable $callback

The callback to execute

protected afterExtending(string $method, callable $callback)

Allows user code to hook into Object::extend after control being delegated to extensions. Each callback will be reset once called.

Parameters

string $method

The name of the method to hook into

callable $callback

The callback to execute

protected defineExtensionMethods()

Adds any methods from Extension instances attached to this object.

All these methods can then be called directly on the instance (transparently mapped through __call()}), or called explicitly through {@link extend().

static bool add_extension(string $classOrExtension, string $extension = null)

Add an extension to a specific class.

The preferred method for adding extensions is through YAML config, since it avoids autoloading the class, and is easier to override in more specific configurations.

As an alternative, extensions can be added to a specific class directly in the Object::$extensions array. See SiteTree::$extensions for examples. Keep in mind that the extension will only be applied to new instances, not existing ones (including all instances created through singleton()).

Parameters

string $classOrExtension

Class that should be extended - has to be a subclass of Object

string $extension

Subclass of Extension with optional parameters as a string, e.g. "Versioned"

Return Value

bool

Flag if the extension was added

See also

http://doc.silverstripe.org/framework/en/trunk/reference/dataextension

static remove_extension(string $extension)

Remove an extension from a class.

Note: This will not remove extensions from parent classes, and must be called directly on the class assigned the extension.

Keep in mind that this won't revert any datamodel additions of the extension at runtime, unless its used before the schema building kicks in (in your _config.php). Doesn't remove the extension from any Object instances which are already created, but will have an effect on new extensions. Clears any previously created singletons through singleton() to avoid side-effects from stale extension information.

Parameters

string $extension

class name of an Extension subclass, without parameters

static array get_extensions(string $class = null, bool $includeArgumentString = false)

No description

Parameters

string $class

If omitted, will get extensions for the current class

bool $includeArgumentString

Include the argument string in the return array, FALSE would return array("Versioned"), TRUE returns array("Versioned('Stage','Live')").

Return Value

array

Numeric array of either DataExtension class names, or eval'ed class name strings with constructor arguments.

static array|null get_extra_config_sources(string $class = null)

Get extra config sources for this class

Parameters

string $class

Name of class. If left null will return for the current class

Return Value

array|null

static bool has_extension(string $classOrExtension, string $requiredExtension = null, bool $strict = false)

Return TRUE if a class has a specified extension.

This supports backwards-compatible format (static Object::has_extension($requiredExtension)) and new format ($object->has_extension($class, $requiredExtension))

Parameters

string $classOrExtension

Class to check extension for, or the extension name to check if the second argument is null.

string $requiredExtension

If the first argument is the parent class, this is the extension to check. If left null, the first parameter will be treated as the extension.

bool $strict

if the extension has to match the required extension and not be a subclass

Return Value

bool

Flag if the extension exists

array invokeWithExtensions(string $method, mixed ...$arguments)

Calls a method if available on both this object and all applied Extensions, and then attempts to merge all results into an array

Parameters

string $method

the method name to call

mixed ...$arguments

List of arguments

Return Value

array

List of results with nulls filtered out

array extend(string $method, mixed ...$arguments)

Run the given function on all of this object's extensions. Note that this method originally returned void, so if you wanted to return results, you're hosed

Currently returns an array, with an index resulting every time the function is called. Only adds returns if they're not NULL, to avoid bogus results from methods just defined on the parent extension. This is important for permission-checks through extend, as they use min() to determine if any of the returns is FALSE. As min() doesn't do type checking, an included NULL return would fail the permission checks.

The extension methods are defined during __construct()} in {@link defineMethods().

Parameters

string $method

the name of the method to call on each extension

mixed ...$arguments

Return Value

array

Extension|null getExtensionInstance(string $extension)

Get an extension instance attached to this object by name.

Parameters

string $extension

Return Value

Extension|null

bool hasExtension(string $extension)

Returns TRUE if this object instance has a specific extension applied in $extension_instances. Extension instances are initialized at constructor time, meaning if you use add_extension() afterwards, the added extension will just be added to new instances of the extended class. Use the static method has_extension() to check if a class (not an instance) has a specific extension.

Caution: Don't use singleton()->hasExtension() as it will give you inconsistent results based on when the singleton was first accessed.

Parameters

string $extension

Classname of an Extension subclass without parameters

Return Value

bool

Extension[] getExtensionInstances()

Get all extension instances for this specific object instance.

See get_extensions() to get all applied extension classes for this class (not the instance).

This method also provides lazy-population of the extension_instances property.

Return Value

Extension[]

Map of DataExtension instances, keyed by classname.

void hydrate(array $urls, string|null $message)

Use this method to populate newly created job with data

Parameters

array $urls
string|null $message

Return Value

void

int getUrlsPerJob()

No description

Return Value

int

abstract protected void processUrl(string $url, int $priority)

Implement this method to process URL

Parameters

string $url
int $priority

Return Value

void

protected void markUrlAsProcessed(string $url)

Move URL to list of processed URLs and update job step to indicate progress indication of progress is important for jobs which take long time to process jobs that do not indicate progress may be identified as stalled by the queue and may end up paused

Parameters

string $url

Return Value

void

protected void updateCompletedState()

Check if job is complete and update the job state if needed

Return Value

void

protected int getChunkSize()

No description

Return Value

int

protected handleFailedUrl(string $url, array $meta)

This function can be overridden to handle the case of failure of specific URL processing such case is not handled by default which results in all such errors being effectively silenced

Parameters

string $url
array $meta