com.crawljax.core.plugin

Class Plugins

java.lang.Object

com.crawljax.core.plugin.Plugins

@Singleton
public class Plugins
extends Object

Class for invoking plugins. The methods in this class are invoked from the Crawljax Core.

Constructor Summary

Constructors

Constructor and Description
Plugins(CrawljaxConfiguration config, com.codahale.metrics.MetricRegistry registry)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object object)
int	hashCode()
com.google.common.collect.ImmutableSet<String>	pluginNames()
void	runOnBrowserCreatedPlugins(EmbeddedBrowser newBrowser) Load and run the OnBrowserCreatedPlugins, this call has been made from the browser pool when a new browser has been created and ready to be used by the Crawler.
void	runOnFireEventFailedPlugins(CrawlerContext context, Eventable eventable, List<Eventable> path) Load and run the OnFireEventFailedPlugins, this call has been made from the fireEvent when the event is not fireable.
void	runOnInvariantViolationPlugins(Invariant invariant, CrawlerContext context) Run the OnInvariantViolation plugins when an Invariant is violated.
void	runOnNewStatePlugins(CrawlerContext context, StateVertex newState) load and run the OnNewStatePlugins.
void	runOnRevisitStatePlugins(CrawlerContext context, StateVertex currentState) load and run the onRevisitStateValidator.
void	runOnUrlFirstLoadPlugins(CrawlerContext context)
void	runOnUrlLoadPlugins(CrawlerContext context) load and run the OnUrlLoadPlugins.
void	runPostCrawlingPlugins(CrawlSession session, ExitNotifier.ExitStatus exitReason) load and run the postCrawlingPlugins.
void	runPreCrawlingPlugins(CrawljaxConfiguration config) Run the PreCrawlingPlugins.
void	runPreStateCrawlingPlugins(CrawlerContext context, com.google.common.collect.ImmutableList<CandidateElement> candidateElements, StateVertex state) load and run the PreStateCrawlingPlugins.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Plugins

@Inject
public Plugins(CrawljaxConfiguration config,
                       com.codahale.metrics.MetricRegistry registry)

Method Detail

runOnUrlLoadPlugins

public void runOnUrlLoadPlugins(CrawlerContext context)

load and run the OnUrlLoadPlugins. The OnUrlLoadPlugins are run just after the Browser has gone to the initial url. Not only the first time but also every time the Core navigates back. Warning the instance of the browser offered is not a clone but the current and after wards used browser instance, changes and operations may cause 'strange' behaviour.

This method can be called from multiple threads with different CrawlerContext

Parameters:

context - the current CrawlerContext for this crawler.

runOnNewStatePlugins

public void runOnNewStatePlugins(CrawlerContext context,
                                 StateVertex newState)

load and run the OnNewStatePlugins. OnNewStatePlugins are plugins that are ran when a new state was found. This also happens for the Index State. Warning the session is not a clone, changing the session can cause strange behaviour of Crawljax.

This method can be called from multiple threads with different CrawlerContext

Parameters:

context - the current CrawlerContext for this crawler.

newState - The new state

runOnInvariantViolationPlugins

public void runOnInvariantViolationPlugins(Invariant invariant,
                                           CrawlerContext context)

Run the OnInvariantViolation plugins when an Invariant is violated. Invariant are checked when the state machine is updated that is when the dom is changed after a click on a clickable. When a invariant fails this kind of plugins are executed. Warning the session is not a clone, changing the session can cause strange behaviour of Crawljax.

Parameters:

invariant - the failed invariants

context - the current CrawlerContext for this crawler.

runPostCrawlingPlugins

public void runPostCrawlingPlugins(CrawlSession session,
                                   ExitNotifier.ExitStatus exitReason)

load and run the postCrawlingPlugins. PostCrawlingPlugins are executed after the crawling is finished Warning: changing the session can change the behavior of other post crawl plugins. It is not a clone!

Parameters:

exitReason - The reason Crawljax has stopped.

session - the current CrawlSession for this crawler.

runOnRevisitStatePlugins

public void runOnRevisitStatePlugins(CrawlerContext context,
                                     StateVertex currentState)

load and run the onRevisitStateValidator. As a difference to other SessionPlugins this plugin needs an explicit current state because the session.getCurrentState() does not contain the correct current state because we are in back-tracking

Parameters:

context - the current CrawlerContext for this crawler.

currentState - the state the 'back tracking' operation is currently in

runPreStateCrawlingPlugins

public void runPreStateCrawlingPlugins(CrawlerContext context,
                                       com.google.common.collect.ImmutableList<CandidateElement> candidateElements,
                                       StateVertex state)

load and run the PreStateCrawlingPlugins. Method that is called before the current state is crawled (before firing events on the current DOM state). Example: filter candidate elements. Warning the session and candidateElements are not clones, changes will result in changed behaviour.

Parameters:

context - the current CrawlerContext for this crawler.

candidateElements - the elements which crawljax is about to crawl

state - The state being violated.

runPreCrawlingPlugins

public void runPreCrawlingPlugins(CrawljaxConfiguration config)

Run the PreCrawlingPlugins. No CrawlerContext is available at this stage.

Parameters:

config - The given CrawljaxConfiguration.

runOnFireEventFailedPlugins

public void runOnFireEventFailedPlugins(CrawlerContext context,
                                        Eventable eventable,
                                        List<Eventable> path)

Load and run the OnFireEventFailedPlugins, this call has been made from the fireEvent when the event is not fireable. the Path is the Path leading TO this eventable (not included).

Parameters:

eventable - the eventable not able to fire.

path - the path TO this eventable.

runOnBrowserCreatedPlugins

public void runOnBrowserCreatedPlugins(EmbeddedBrowser newBrowser)

Load and run the OnBrowserCreatedPlugins, this call has been made from the browser pool when a new browser has been created and ready to be used by the Crawler. The PreCrawling plugins are executed before these plugins are executed except that the pre-crawling plugins are only executed on the first created browser.

Parameters:

newBrowser - the new created browser object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object object)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

pluginNames

public com.google.common.collect.ImmutableSet<String> pluginNames()

Returns:

A ImmutableSet of the Plugin names that are installed.

runOnUrlFirstLoadPlugins

public void runOnUrlFirstLoadPlugins(CrawlerContext context)