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KaiLv
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UDR_Java

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public boolean switchToStateAndCheckIfClone ( final Eventable event , StateVertex newState , CrawlerContext context ) { StateVertex cloneState = this . addStateToCurrentState ( newState , event ) ; runOnInvariantViolationPlugins ( context ) ; if ( cloneState == null ) { changeState ( newState ) ; plugins . runOnNewStatePlugins ( context , newState ) ; return true ; } else { changeState ( cloneState ) ; return false ; } }
Adds an edge between the current and new state .
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@ SuppressWarnings ( "unchecked" ) static void logToFile ( String filename ) { Logger rootLogger = ( Logger ) LoggerFactory . getLogger ( org . slf4j . Logger . ROOT_LOGGER_NAME ) ; FileAppender < ILoggingEvent > fileappender = new FileAppender <> ( ) ; fileappender . setContext ( rootLogger . getLoggerContext ( ) ) ; fileappender . setFile ( filename ) ; fileappender . setName ( "FILE" ) ; ConsoleAppender < ? > console = ( ConsoleAppender < ? > ) rootLogger . getAppender ( "STDOUT" ) ; fileappender . setEncoder ( ( Encoder < ILoggingEvent > ) console . getEncoder ( ) ) ; fileappender . start ( ) ; rootLogger . addAppender ( fileappender ) ; console . stop ( ) ; }
Configure file logging and stop console logging .
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public static void main ( String [ ] args ) { try { JarRunner runner = new JarRunner ( args ) ; runner . runIfConfigured ( ) ; } catch ( NumberFormatException e ) { System . err . println ( "Could not parse number " + e . getMessage ( ) ) ; System . exit ( 1 ) ; } catch ( RuntimeException e ) { System . err . println ( e . getMessage ( ) ) ; System . exit ( 1 ) ; } }
Main executable method of Crawljax CLI .
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public static String toPrettyJson ( Object o ) { try { return MAPPER . writerWithDefaultPrettyPrinter ( ) . writeValueAsString ( o ) ; } catch ( JsonProcessingException e ) { LoggerFactory . getLogger ( Serializer . class ) . error ( "Could not serialize the object. This will be ignored and the error will be written instead. Object was {}" , o , e ) ; return "\"" + e . getMessage ( ) + "\"" ; } }
Serialize the object JSON . When an error occures return a string with the given error .
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private void postTraversalProcessing ( ) { int nc1 = treeSize ; info [ KR ] = new int [ leafCount ] ; info [ RKR ] = new int [ leafCount ] ; int lc = leafCount ; int i = 0 ; // compute left-most leaf descendants // go along the left-most path, remember each node and assign to it the path's // leaf // compute right-most leaf descendants (in reversed postorder) for ( i = 0 ; i < treeSize ; i ++ ) { if ( paths [ LEFT ] [ i ] == - 1 ) { info [ POST2_LLD ] [ i ] = i ; } else { info [ POST2_LLD ] [ i ] = info [ POST2_LLD ] [ paths [ LEFT ] [ i ] ] ; } if ( paths [ RIGHT ] [ i ] == - 1 ) { info [ RPOST2_RLD ] [ treeSize - 1 - info [ POST2_PRE ] [ i ] ] = ( treeSize - 1 - info [ POST2_PRE ] [ i ] ) ; } else { info [ RPOST2_RLD ] [ treeSize - 1 - info [ POST2_PRE ] [ i ] ] = info [ RPOST2_RLD ] [ treeSize - 1 - info [ POST2_PRE ] [ paths [ RIGHT ] [ i ] ] ] ; } } // compute key root nodes // compute reversed key root nodes (in revrsed postorder) boolean [ ] visited = new boolean [ nc1 ] ; boolean [ ] visitedR = new boolean [ nc1 ] ; Arrays . fill ( visited , false ) ; int k = lc - 1 ; int kR = lc - 1 ; for ( i = nc1 - 1 ; i >= 0 ; i -- ) { if ( ! visited [ info [ POST2_LLD ] [ i ] ] ) { info [ KR ] [ k ] = i ; visited [ info [ POST2_LLD ] [ i ] ] = true ; k -- ; } if ( ! visitedR [ info [ RPOST2_RLD ] [ i ] ] ) { info [ RKR ] [ kR ] = i ; visitedR [ info [ RPOST2_RLD ] [ i ] ] = true ; kR -- ; } } // compute minimal key roots for every subtree // compute minimal reversed key roots for every subtree (in reversed postorder) int parent = - 1 ; int parentR = - 1 ; for ( i = 0 ; i < leafCount ; i ++ ) { parent = info [ KR ] [ i ] ; while ( parent > - 1 && info [ POST2_MIN_KR ] [ parent ] == - 1 ) { info [ POST2_MIN_KR ] [ parent ] = i ; parent = info [ POST2_PARENT ] [ parent ] ; } parentR = info [ RKR ] [ i ] ; while ( parentR > - 1 && info [ RPOST2_MIN_RKR ] [ parentR ] == - 1 ) { info [ RPOST2_MIN_RKR ] [ parentR ] = i ; parentR = info [ POST2_PARENT ] [ info [ RPOST2_POST ] [ parentR ] ] ; // get parent's postorder if ( parentR > - 1 ) { parentR = treeSize - 1 - info [ POST2_PRE ] [ parentR ] ; // if parent exists get its // rev. postorder } } } }
Gathers information that couldn t be collected while tree traversal .
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static int [ ] toIntArray ( List < Integer > integers ) { int [ ] ints = new int [ integers . size ( ) ] ; int i = 0 ; for ( Integer n : integers ) { ints [ i ++ ] = n ; } return ints ; }
Transforms a list of Integer objects to an array of primitive int values .
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@ Override public void onNewState ( CrawlerContext context , StateVertex vertex ) { LOG . debug ( "onNewState" ) ; StateBuilder state = outModelCache . addStateIfAbsent ( vertex ) ; visitedStates . putIfAbsent ( state . getName ( ) , vertex ) ; saveScreenshot ( context . getBrowser ( ) , state . getName ( ) , vertex ) ; outputBuilder . persistDom ( state . getName ( ) , context . getBrowser ( ) . getUnStrippedDom ( ) ) ; }
Saves a screenshot of every new state .
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@ Override public void preStateCrawling ( CrawlerContext context , ImmutableList < CandidateElement > candidateElements , StateVertex state ) { LOG . debug ( "preStateCrawling" ) ; List < CandidateElementPosition > newElements = Lists . newLinkedList ( ) ; LOG . info ( "Prestate found new state {} with {} candidates" , state . getName ( ) , candidateElements . size ( ) ) ; for ( CandidateElement element : candidateElements ) { try { WebElement webElement = getWebElement ( context . getBrowser ( ) , element ) ; if ( webElement != null ) { newElements . add ( findElement ( webElement , element ) ) ; } } catch ( WebDriverException e ) { LOG . info ( "Could not get position for {}" , element , e ) ; } } StateBuilder stateOut = outModelCache . addStateIfAbsent ( state ) ; stateOut . addCandidates ( newElements ) ; LOG . trace ( "preState finished, elements added to state" ) ; }
Logs all the canidate elements so that the plugin knows which elements were the candidate elements .
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@ Override public void postCrawling ( CrawlSession session , ExitStatus exitStatus ) { LOG . debug ( "postCrawling" ) ; StateFlowGraph sfg = session . getStateFlowGraph ( ) ; checkSFG ( sfg ) ; // TODO: call state abstraction function to get distance matrix and run rscript on it to // create clusters String [ ] [ ] clusters = null ; // generateClusters(session); result = outModelCache . close ( session , exitStatus , clusters ) ; outputBuilder . write ( result , session . getConfig ( ) , clusters ) ; StateWriter writer = new StateWriter ( outputBuilder , sfg , ImmutableMap . copyOf ( visitedStates ) ) ; for ( State state : result . getStates ( ) . values ( ) ) { try { writer . writeHtmlForState ( state ) ; } catch ( Exception Ex ) { LOG . info ( "couldn't write state :" + state . getName ( ) ) ; } } LOG . info ( "Crawl overview plugin has finished" ) ; }
Generated the report .
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public FormAction setValuesInForm ( Form form ) { FormAction formAction = new FormAction ( ) ; form . setFormAction ( formAction ) ; this . forms . add ( form ) ; return formAction ; }
Links the form with an HTML element which can be clicked .
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public static Document removeTags ( Document dom , String tagName ) { NodeList list ; try { list = XPathHelper . evaluateXpathExpression ( dom , "//" + tagName . toUpperCase ( ) ) ; while ( list . getLength ( ) > 0 ) { Node sc = list . item ( 0 ) ; if ( sc != null ) { sc . getParentNode ( ) . removeChild ( sc ) ; } list = XPathHelper . evaluateXpathExpression ( dom , "//" + tagName . toUpperCase ( ) ) ; } } catch ( XPathExpressionException e ) { LOGGER . error ( "Error while removing tag " + tagName , e ) ; } return dom ; }
Removes all the given tags from the document .
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public static byte [ ] getDocumentToByteArray ( Document dom ) { try { TransformerFactory tFactory = TransformerFactory . newInstance ( ) ; Transformer transformer = tFactory . newTransformer ( ) ; transformer . setOutputProperty ( OutputKeys . INDENT , "yes" ) ; transformer . setOutputProperty ( OutputKeys . OMIT_XML_DECLARATION , "no" ) ; transformer . setOutputProperty ( OutputKeys . METHOD , "html" ) ; // TODO should be fixed to read doctype declaration transformer . setOutputProperty ( OutputKeys . DOCTYPE_PUBLIC , "-//W3C//DTD XHTML 1.0 Strict//EN\" " + "\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd" ) ; DOMSource source = new DOMSource ( dom ) ; ByteArrayOutputStream out = new ByteArrayOutputStream ( ) ; Result result = new StreamResult ( out ) ; transformer . transform ( source , result ) ; return out . toByteArray ( ) ; } catch ( TransformerException e ) { LOGGER . error ( "Error while converting the document to a byte array" , e ) ; } return null ; }
Serialize the Document object .
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public static String addFolderSlashIfNeeded ( String folderName ) { if ( ! "" . equals ( folderName ) && ! folderName . endsWith ( "/" ) ) { return folderName + "/" ; } else { return folderName ; } }
Adds a slash to a path if it doesn t end with a slash .
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public static String getTemplateAsString ( String fileName ) throws IOException { // in .jar file String fNameJar = getFileNameInPath ( fileName ) ; InputStream inStream = DomUtils . class . getResourceAsStream ( "/" + fNameJar ) ; if ( inStream == null ) { // try to find file normally File f = new File ( fileName ) ; if ( f . exists ( ) ) { inStream = new FileInputStream ( f ) ; } else { throw new IOException ( "Cannot find " + fileName + " or " + fNameJar ) ; } } BufferedReader bufferedReader = new BufferedReader ( new InputStreamReader ( inStream ) ) ; String line ; StringBuilder stringBuilder = new StringBuilder ( ) ; while ( ( line = bufferedReader . readLine ( ) ) != null ) { stringBuilder . append ( line ) . append ( "\n" ) ; } bufferedReader . close ( ) ; return stringBuilder . toString ( ) ; }
Retrieves the content of the filename . Also reads from JAR Searches for the resource in the root folder in the jar
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public static void writeDocumentToFile ( Document document , String filePathname , String method , int indent ) throws TransformerException , IOException { Transformer transformer = TransformerFactory . newInstance ( ) . newTransformer ( ) ; transformer . setOutputProperty ( OutputKeys . INDENT , "yes" ) ; transformer . setOutputProperty ( OutputKeys . OMIT_XML_DECLARATION , "no" ) ; transformer . setOutputProperty ( OutputKeys . METHOD , method ) ; transformer . transform ( new DOMSource ( document ) , new StreamResult ( new FileOutputStream ( filePathname ) ) ) ; }
Write the document object to a file .
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public static String getTextContent ( Document document , boolean individualTokens ) { String textContent = null ; if ( individualTokens ) { List < String > tokens = getTextTokens ( document ) ; textContent = StringUtils . join ( tokens , "," ) ; } else { textContent = document . getDocumentElement ( ) . getTextContent ( ) . trim ( ) . replaceAll ( "\\s+" , "," ) ; } return textContent ; }
To get all the textual content in the dom
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public boolean equivalent ( Element otherElement , boolean logging ) { if ( eventable . getElement ( ) . equals ( otherElement ) ) { if ( logging ) { LOGGER . info ( "Element equal" ) ; } return true ; } if ( eventable . getElement ( ) . equalAttributes ( otherElement ) ) { if ( logging ) { LOGGER . info ( "Element attributes equal" ) ; } return true ; } if ( eventable . getElement ( ) . equalId ( otherElement ) ) { if ( logging ) { LOGGER . info ( "Element ID equal" ) ; } return true ; } if ( ! eventable . getElement ( ) . getText ( ) . equals ( "" ) && eventable . getElement ( ) . equalText ( otherElement ) ) { if ( logging ) { LOGGER . info ( "Element text equal" ) ; } return true ; } return false ; }
Comparator against other element .
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@ SuppressWarnings ( "unchecked" ) public List < Difference > compare ( ) { Diff diff = new Diff ( this . controlDOM , this . testDOM ) ; DetailedDiff detDiff = new DetailedDiff ( diff ) ; return detDiff . getAllDifferences ( ) ; }
Compare the controlDOM and testDOM and save and return the differences in a list .
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protected void setInputElementValue ( Node element , FormInput input ) { LOGGER . debug ( "INPUTFIELD: {} ({})" , input . getIdentification ( ) , input . getType ( ) ) ; if ( element == null || input . getInputValues ( ) . isEmpty ( ) ) { return ; } try { switch ( input . getType ( ) ) { case TEXT : case TEXTAREA : case PASSWORD : handleText ( input ) ; break ; case HIDDEN : handleHidden ( input ) ; break ; case CHECKBOX : handleCheckBoxes ( input ) ; break ; case RADIO : handleRadioSwitches ( input ) ; break ; case SELECT : handleSelectBoxes ( input ) ; } } catch ( ElementNotVisibleException e ) { LOGGER . warn ( "Element not visible, input not completed." ) ; } catch ( BrowserConnectionException e ) { throw e ; } catch ( RuntimeException e ) { LOGGER . error ( "Could not input element values" , e ) ; } }
Fills in the element with the InputValues for input
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private void handleHidden ( FormInput input ) { String text = input . getInputValues ( ) . iterator ( ) . next ( ) . getValue ( ) ; if ( null == text || text . length ( ) == 0 ) { return ; } WebElement inputElement = browser . getWebElement ( input . getIdentification ( ) ) ; JavascriptExecutor js = ( JavascriptExecutor ) browser . getWebDriver ( ) ; js . executeScript ( "arguments[0].setAttribute(arguments[1], arguments[2]);" , inputElement , "value" , text ) ; }
Enter information into the hidden input field .
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@ Override public EmbeddedBrowser get ( ) { LOGGER . debug ( "Setting up a Browser" ) ; // Retrieve the config values used ImmutableSortedSet < String > filterAttributes = configuration . getCrawlRules ( ) . getPreCrawlConfig ( ) . getFilterAttributeNames ( ) ; long crawlWaitReload = configuration . getCrawlRules ( ) . getWaitAfterReloadUrl ( ) ; long crawlWaitEvent = configuration . getCrawlRules ( ) . getWaitAfterEvent ( ) ; // Determine the requested browser type EmbeddedBrowser browser = null ; EmbeddedBrowser . BrowserType browserType = configuration . getBrowserConfig ( ) . getBrowserType ( ) ; try { switch ( browserType ) { case CHROME : browser = newChromeBrowser ( filterAttributes , crawlWaitReload , crawlWaitEvent , false ) ; break ; case CHROME_HEADLESS : browser = newChromeBrowser ( filterAttributes , crawlWaitReload , crawlWaitEvent , true ) ; break ; case FIREFOX : browser = newFirefoxBrowser ( filterAttributes , crawlWaitReload , crawlWaitEvent , false ) ; break ; case FIREFOX_HEADLESS : browser = newFirefoxBrowser ( filterAttributes , crawlWaitReload , crawlWaitEvent , true ) ; break ; case REMOTE : browser = WebDriverBackedEmbeddedBrowser . withRemoteDriver ( configuration . getBrowserConfig ( ) . getRemoteHubUrl ( ) , filterAttributes , crawlWaitEvent , crawlWaitReload ) ; break ; case PHANTOMJS : browser = newPhantomJSDriver ( filterAttributes , crawlWaitReload , crawlWaitEvent ) ; break ; default : throw new IllegalStateException ( "Unrecognized browser type " + configuration . getBrowserConfig ( ) . getBrowserType ( ) ) ; } } catch ( IllegalStateException e ) { LOGGER . error ( "Crawling with {} failed: " + e . getMessage ( ) , browserType . toString ( ) ) ; throw e ; } /* for Retina display. */ if ( browser instanceof WebDriverBackedEmbeddedBrowser ) { int pixelDensity = this . configuration . getBrowserConfig ( ) . getBrowserOptions ( ) . getPixelDensity ( ) ; if ( pixelDensity != - 1 ) ( ( WebDriverBackedEmbeddedBrowser ) browser ) . setPixelDensity ( pixelDensity ) ; } plugins . runOnBrowserCreatedPlugins ( browser ) ; return browser ; }
Build a new WebDriver based EmbeddedBrowser .
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public StackTraceElement [ ] asStackTrace ( ) { int i = 1 ; StackTraceElement [ ] list = new StackTraceElement [ this . size ( ) ] ; for ( Eventable e : this ) { list [ this . size ( ) - i ] = new StackTraceElement ( e . getEventType ( ) . toString ( ) , e . getIdentification ( ) . toString ( ) , e . getElement ( ) . toString ( ) , i ) ; i ++ ; } return list ; }
Build a stack trace for this path . This can be used in generating more meaningful exceptions while using Crawljax in conjunction with JUnit for example .
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public static WebDriverBackedEmbeddedBrowser withRemoteDriver ( String hubUrl , ImmutableSortedSet < String > filterAttributes , long crawlWaitEvent , long crawlWaitReload ) { return WebDriverBackedEmbeddedBrowser . withDriver ( buildRemoteWebDriver ( hubUrl ) , filterAttributes , crawlWaitEvent , crawlWaitReload ) ; }
Create a RemoteWebDriver backed EmbeddedBrowser .
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public static WebDriverBackedEmbeddedBrowser withDriver ( WebDriver driver , ImmutableSortedSet < String > filterAttributes , long crawlWaitEvent , long crawlWaitReload ) { return new WebDriverBackedEmbeddedBrowser ( driver , filterAttributes , crawlWaitEvent , crawlWaitReload ) ; }
Create a WebDriver backed EmbeddedBrowser .
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private static RemoteWebDriver buildRemoteWebDriver ( String hubUrl ) { DesiredCapabilities capabilities = new DesiredCapabilities ( ) ; capabilities . setPlatform ( Platform . ANY ) ; URL url ; try { url = new URL ( hubUrl ) ; } catch ( MalformedURLException e ) { LOGGER . error ( "The given hub url of the remote server is malformed can not continue!" , e ) ; return null ; } HttpCommandExecutor executor = null ; try { executor = new HttpCommandExecutor ( url ) ; } catch ( Exception e ) { // TODO Stefan; refactor this catch, this will definitely result in // NullPointers, why // not throw RuntimeException direct? LOGGER . error ( "Received unknown exception while creating the " + "HttpCommandExecutor, can not continue!" , e ) ; return null ; } return new RemoteWebDriver ( executor , capabilities ) ; }
Private used static method for creation of a RemoteWebDriver . Taking care of the default Capabilities and using the HttpCommandExecutor .
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@ Override public void handlePopups ( ) { /* * try { executeJavaScript("window.alert = function(msg){return true;};" + * "window.confirm = function(msg){return true;};" + * "window.prompt = function(msg){return true;};"); } catch (CrawljaxException e) { * LOGGER.error("Handling of PopUp windows failed", e); } */ /* Workaround: Popups handling currently not supported in PhantomJS. */ if ( browser instanceof PhantomJSDriver ) { return ; } if ( ExpectedConditions . alertIsPresent ( ) . apply ( browser ) != null ) { try { browser . switchTo ( ) . alert ( ) . accept ( ) ; LOGGER . info ( "Alert accepted" ) ; } catch ( Exception e ) { LOGGER . error ( "Handling of PopUp windows failed" ) ; } } }
alert prompt and confirm behave as if the OK button is always clicked .
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private boolean fireEventWait ( WebElement webElement , Eventable eventable ) throws ElementNotVisibleException , InterruptedException { switch ( eventable . getEventType ( ) ) { case click : try { webElement . click ( ) ; } catch ( ElementNotVisibleException e ) { throw e ; } catch ( WebDriverException e ) { throwIfConnectionException ( e ) ; return false ; } break ; case hover : LOGGER . info ( "EventType hover called but this isn't implemented yet" ) ; break ; default : LOGGER . info ( "EventType {} not supported in WebDriver." , eventable . getEventType ( ) ) ; return false ; } Thread . sleep ( this . crawlWaitEvent ) ; return true ; }
Fires the event and waits for a specified time .
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private String filterAttributes ( String html ) { String filteredHtml = html ; for ( String attribute : this . filterAttributes ) { String regex = "\\s" + attribute + "=\"[^\"]*\"" ; Pattern p = Pattern . compile ( regex , Pattern . CASE_INSENSITIVE ) ; Matcher m = p . matcher ( html ) ; filteredHtml = m . replaceAll ( "" ) ; } return filteredHtml ; }
Filters attributes from the HTML string .
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@ Override public synchronized boolean fireEventAndWait ( Eventable eventable ) throws ElementNotVisibleException , NoSuchElementException , InterruptedException { try { boolean handleChanged = false ; boolean result = false ; if ( eventable . getRelatedFrame ( ) != null && ! eventable . getRelatedFrame ( ) . equals ( "" ) ) { LOGGER . debug ( "switching to frame: " + eventable . getRelatedFrame ( ) ) ; try { switchToFrame ( eventable . getRelatedFrame ( ) ) ; } catch ( NoSuchFrameException e ) { LOGGER . debug ( "Frame not found, possibly while back-tracking.." , e ) ; // TODO Stefan, This exception is caught to prevent stopping // from working // This was the case on the Gmail case; find out if not switching // (catching) // Results in good performance... } handleChanged = true ; } WebElement webElement = browser . findElement ( eventable . getIdentification ( ) . getWebDriverBy ( ) ) ; if ( webElement != null ) { result = fireEventWait ( webElement , eventable ) ; } if ( handleChanged ) { browser . switchTo ( ) . defaultContent ( ) ; } return result ; } catch ( ElementNotVisibleException | NoSuchElementException e ) { throw e ; } catch ( WebDriverException e ) { throwIfConnectionException ( e ) ; return false ; } }
Fires an event on an element using its identification .
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@ Override public Object executeJavaScript ( String code ) throws CrawljaxException { try { JavascriptExecutor js = ( JavascriptExecutor ) browser ; return js . executeScript ( code ) ; } catch ( WebDriverException e ) { throwIfConnectionException ( e ) ; throw new CrawljaxException ( e ) ; } }
Execute JavaScript in the browser .
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private InputValue getInputValue ( FormInput input ) { /* Get the DOM element from Selenium. */ WebElement inputElement = browser . getWebElement ( input . getIdentification ( ) ) ; switch ( input . getType ( ) ) { case TEXT : case PASSWORD : case HIDDEN : case SELECT : case TEXTAREA : return new InputValue ( inputElement . getAttribute ( "value" ) ) ; case RADIO : case CHECKBOX : default : String value = inputElement . getAttribute ( "value" ) ; Boolean checked = inputElement . isSelected ( ) ; return new InputValue ( value , checked ) ; } }
Generates the InputValue for the form input by inspecting the current value of the corresponding WebElement on the DOM .
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public static Properties loadProps ( String filename ) { Properties props = new Properties ( ) ; FileInputStream fis = null ; try { fis = new FileInputStream ( filename ) ; props . load ( fis ) ; return props ; } catch ( IOException ex ) { throw new RuntimeException ( ex ) ; } finally { Closer . closeQuietly ( fis ) ; } }
loading Properties from files
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public static Properties getProps ( Properties props , String name , Properties defaultProperties ) { final String propString = props . getProperty ( name ) ; if ( propString == null ) return defaultProperties ; String [ ] propValues = propString . split ( "," ) ; if ( propValues . length < 1 ) { throw new IllegalArgumentException ( "Illegal format of specifying properties '" + propString + "'" ) ; } Properties properties = new Properties ( ) ; for ( int i = 0 ; i < propValues . length ; i ++ ) { String [ ] prop = propValues [ i ] . split ( "=" ) ; if ( prop . length != 2 ) throw new IllegalArgumentException ( "Illegal format of specifying properties '" + propValues [ i ] + "'" ) ; properties . put ( prop [ 0 ] , prop [ 1 ] ) ; } return properties ; }
Get a property of type java . util . Properties or return the default if no such property is defined
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public static String getString ( Properties props , String name , String defaultValue ) { return props . containsKey ( name ) ? props . getProperty ( name ) : defaultValue ; }
Get a string property or if no such property is defined return the given default value
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public static int read ( ReadableByteChannel channel , ByteBuffer buffer ) throws IOException { int count = channel . read ( buffer ) ; if ( count == - 1 ) throw new EOFException ( "Received -1 when reading from channel, socket has likely been closed." ) ; return count ; }
read data from channel to buffer
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public static void writeShortString ( ByteBuffer buffer , String s ) { if ( s == null ) { buffer . putShort ( ( short ) - 1 ) ; } else if ( s . length ( ) > Short . MAX_VALUE ) { throw new IllegalArgumentException ( "String exceeds the maximum size of " + Short . MAX_VALUE + "." ) ; } else { byte [ ] data = getBytes ( s ) ; //topic support non-ascii character buffer . putShort ( ( short ) data . length ) ; buffer . put ( data ) ; } }
Write a size prefixed string where the size is stored as a 2 byte short
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public static void putUnsignedInt ( ByteBuffer buffer , int index , long value ) { buffer . putInt ( index , ( int ) ( value & 0xffffffff L ) ) ; }
Write the given long value as a 4 byte unsigned integer . Overflow is ignored .
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public static long crc32 ( byte [ ] bytes , int offset , int size ) { CRC32 crc = new CRC32 ( ) ; crc . update ( bytes , offset , size ) ; return crc . getValue ( ) ; }
Compute the CRC32 of the segment of the byte array given by the specificed size and offset
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public static Thread newThread ( String name , Runnable runnable , boolean daemon ) { Thread thread = new Thread ( runnable , name ) ; thread . setDaemon ( daemon ) ; return thread ; }
Create a new thread
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private static void unregisterMBean ( String name ) { MBeanServer mbs = ManagementFactory . getPlatformMBeanServer ( ) ; try { synchronized ( mbs ) { ObjectName objName = new ObjectName ( name ) ; if ( mbs . isRegistered ( objName ) ) { mbs . unregisterMBean ( objName ) ; } } } catch ( Exception e ) { e . printStackTrace ( ) ; } }
Unregister the mbean with the given name if there is one registered
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@ SuppressWarnings ( "resource" ) public static FileChannel openChannel ( File file , boolean mutable ) throws IOException { if ( mutable ) { return new RandomAccessFile ( file , "rw" ) . getChannel ( ) ; } return new FileInputStream ( file ) . getChannel ( ) ; }
open a readable or writeable FileChannel
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@ SuppressWarnings ( "unchecked" ) public static < E > E getObject ( String className ) { if ( className == null ) { return ( E ) null ; } try { return ( E ) Class . forName ( className ) . newInstance ( ) ; } catch ( InstantiationException e ) { throw new RuntimeException ( e ) ; } catch ( IllegalAccessException e ) { throw new RuntimeException ( e ) ; } catch ( ClassNotFoundException e ) { throw new RuntimeException ( e ) ; } }
create an instance from the className
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public static String md5 ( byte [ ] source ) { try { MessageDigest md = MessageDigest . getInstance ( "MD5" ) ; md . update ( source ) ; byte tmp [ ] = md . digest ( ) ; char str [ ] = new char [ 32 ] ; int k = 0 ; for ( byte b : tmp ) { str [ k ++ ] = hexDigits [ b >>> 4 & 0xf ] ; str [ k ++ ] = hexDigits [ b & 0xf ] ; } return new String ( str ) ; } catch ( Exception e ) { throw new IllegalArgumentException ( e ) ; } }
digest message with MD5
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public void append ( LogSegment segment ) { while ( true ) { List < LogSegment > curr = contents . get ( ) ; List < LogSegment > updated = new ArrayList < LogSegment > ( curr ) ; updated . add ( segment ) ; if ( contents . compareAndSet ( curr , updated ) ) { return ; } } }
Append the given item to the end of the list
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public List < LogSegment > trunc ( int newStart ) { if ( newStart < 0 ) { throw new IllegalArgumentException ( "Starting index must be positive." ) ; } while ( true ) { List < LogSegment > curr = contents . get ( ) ; int newLength = Math . max ( curr . size ( ) - newStart , 0 ) ; List < LogSegment > updatedList = new ArrayList < LogSegment > ( curr . subList ( Math . min ( newStart , curr . size ( ) - 1 ) , curr . size ( ) ) ) ; if ( contents . compareAndSet ( curr , updatedList ) ) { return curr . subList ( 0 , curr . size ( ) - newLength ) ; } } }
Delete the first n items from the list
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public LogSegment getLastView ( ) { List < LogSegment > views = getView ( ) ; return views . get ( views . size ( ) - 1 ) ; }
get the last segment at the moment
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private void cleanupLogs ( ) throws IOException { logger . trace ( "Beginning log cleanup..." ) ; int total = 0 ; Iterator < Log > iter = getLogIterator ( ) ; long startMs = System . currentTimeMillis ( ) ; while ( iter . hasNext ( ) ) { Log log = iter . next ( ) ; total += cleanupExpiredSegments ( log ) + cleanupSegmentsToMaintainSize ( log ) ; } if ( total > 0 ) { logger . warn ( "Log cleanup completed. " + total + " files deleted in " + ( System . currentTimeMillis ( ) - startMs ) / 1000 + " seconds" ) ; } else { logger . trace ( "Log cleanup completed. " + total + " files deleted in " + ( System . currentTimeMillis ( ) - startMs ) / 1000 + " seconds" ) ; } }
Runs through the log removing segments older than a certain age
187
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private int cleanupSegmentsToMaintainSize ( final Log log ) throws IOException { if ( logRetentionSize < 0 || log . size ( ) < logRetentionSize ) return 0 ; List < LogSegment > toBeDeleted = log . markDeletedWhile ( new LogSegmentFilter ( ) { long diff = log . size ( ) - logRetentionSize ; public boolean filter ( LogSegment segment ) { diff -= segment . size ( ) ; return diff >= 0 ; } } ) ; return deleteSegments ( log , toBeDeleted ) ; }
Runs through the log removing segments until the size of the log is at least logRetentionSize bytes in size
122
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private int deleteSegments ( Log log , List < LogSegment > segments ) { int total = 0 ; for ( LogSegment segment : segments ) { boolean deleted = false ; try { try { segment . getMessageSet ( ) . close ( ) ; } catch ( IOException e ) { logger . warn ( e . getMessage ( ) , e ) ; } if ( ! segment . getFile ( ) . delete ( ) ) { deleted = true ; } else { total += 1 ; } } finally { logger . warn ( String . format ( "DELETE_LOG[%s] %s => %s" , log . name , segment . getFile ( ) . getAbsolutePath ( ) , deleted ) ) ; } } return total ; }
Attemps to delete all provided segments from a log and returns how many it was able to
160
19
147,149
public void startup ( ) { if ( config . getEnableZookeeper ( ) ) { serverRegister . registerBrokerInZk ( ) ; for ( String topic : getAllTopics ( ) ) { serverRegister . processTask ( new TopicTask ( TopicTask . TaskType . CREATE , topic ) ) ; } startupLatch . countDown ( ) ; } logger . debug ( "Starting log flusher every {} ms with the following overrides {}" , config . getFlushSchedulerThreadRate ( ) , logFlushIntervalMap ) ; logFlusherScheduler . scheduleWithRate ( new Runnable ( ) { public void run ( ) { flushAllLogs ( false ) ; } } , config . getFlushSchedulerThreadRate ( ) , config . getFlushSchedulerThreadRate ( ) ) ; }
Register this broker in ZK for the first time .
182
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public void flushAllLogs ( final boolean force ) { Iterator < Log > iter = getLogIterator ( ) ; while ( iter . hasNext ( ) ) { Log log = iter . next ( ) ; try { boolean needFlush = force ; if ( ! needFlush ) { long timeSinceLastFlush = System . currentTimeMillis ( ) - log . getLastFlushedTime ( ) ; Integer logFlushInterval = logFlushIntervalMap . get ( log . getTopicName ( ) ) ; if ( logFlushInterval == null ) { logFlushInterval = config . getDefaultFlushIntervalMs ( ) ; } final String flushLogFormat = "[%s] flush interval %d, last flushed %d, need flush? %s" ; needFlush = timeSinceLastFlush >= logFlushInterval . intValue ( ) ; logger . trace ( String . format ( flushLogFormat , log . getTopicName ( ) , logFlushInterval , log . getLastFlushedTime ( ) , needFlush ) ) ; } if ( needFlush ) { log . flush ( ) ; } } catch ( IOException ioe ) { logger . error ( "Error flushing topic " + log . getTopicName ( ) , ioe ) ; logger . error ( "Halting due to unrecoverable I/O error while flushing logs: " + ioe . getMessage ( ) , ioe ) ; Runtime . getRuntime ( ) . halt ( 1 ) ; } catch ( Exception e ) { logger . error ( "Error flushing topic " + log . getTopicName ( ) , e ) ; } } }
flush all messages to disk
358
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147,151
public ILog getLog ( String topic , int partition ) { TopicNameValidator . validate ( topic ) ; Pool < Integer , Log > p = getLogPool ( topic , partition ) ; return p == null ? null : p . get ( partition ) ; }
Get the log if exists or return null
55
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147,152
public ILog getOrCreateLog ( String topic , int partition ) throws IOException { final int configPartitionNumber = getPartition ( topic ) ; if ( partition >= configPartitionNumber ) { throw new IOException ( "partition is bigger than the number of configuration: " + configPartitionNumber ) ; } boolean hasNewTopic = false ; Pool < Integer , Log > parts = getLogPool ( topic , partition ) ; if ( parts == null ) { Pool < Integer , Log > found = logs . putIfNotExists ( topic , new Pool < Integer , Log > ( ) ) ; if ( found == null ) { hasNewTopic = true ; } parts = logs . get ( topic ) ; } // Log log = parts . get ( partition ) ; if ( log == null ) { log = createLog ( topic , partition ) ; Log found = parts . putIfNotExists ( partition , log ) ; if ( found != null ) { Closer . closeQuietly ( log , logger ) ; log = found ; } else { logger . info ( format ( "Created log for [%s-%d], now create other logs if necessary" , topic , partition ) ) ; final int configPartitions = getPartition ( topic ) ; for ( int i = 0 ; i < configPartitions ; i ++ ) { getOrCreateLog ( topic , i ) ; } } } if ( hasNewTopic && config . getEnableZookeeper ( ) ) { topicRegisterTasks . add ( new TopicTask ( TopicTask . TaskType . CREATE , topic ) ) ; } return log ; }
Create the log if it does not exist or return back exist log
343
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public int createLogs ( String topic , final int partitions , final boolean forceEnlarge ) { TopicNameValidator . validate ( topic ) ; synchronized ( logCreationLock ) { final int configPartitions = getPartition ( topic ) ; if ( configPartitions >= partitions || ! forceEnlarge ) { return configPartitions ; } topicPartitionsMap . put ( topic , partitions ) ; if ( config . getEnableZookeeper ( ) ) { if ( getLogPool ( topic , 0 ) != null ) { //created already topicRegisterTasks . add ( new TopicTask ( TopicTask . TaskType . ENLARGE , topic ) ) ; } else { topicRegisterTasks . add ( new TopicTask ( TopicTask . TaskType . CREATE , topic ) ) ; } } return partitions ; } }
create logs with given partition number
172
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public List < Long > getOffsets ( OffsetRequest offsetRequest ) { ILog log = getLog ( offsetRequest . topic , offsetRequest . partition ) ; if ( log != null ) { return log . getOffsetsBefore ( offsetRequest ) ; } return ILog . EMPTY_OFFSETS ; }
read offsets before given time
66
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147,155
private Send handle ( SelectionKey key , Receive request ) { final short requestTypeId = request . buffer ( ) . getShort ( ) ; final RequestKeys requestType = RequestKeys . valueOf ( requestTypeId ) ; if ( requestLogger . isTraceEnabled ( ) ) { if ( requestType == null ) { throw new InvalidRequestException ( "No mapping found for handler id " + requestTypeId ) ; } String logFormat = "Handling %s request from %s" ; requestLogger . trace ( format ( logFormat , requestType , channelFor ( key ) . socket ( ) . getRemoteSocketAddress ( ) ) ) ; } RequestHandler handlerMapping = requesthandlerFactory . mapping ( requestType , request ) ; if ( handlerMapping == null ) { throw new InvalidRequestException ( "No handler found for request" ) ; } long start = System . nanoTime ( ) ; Send maybeSend = handlerMapping . handler ( requestType , request ) ; stats . recordRequest ( requestType , System . nanoTime ( ) - start ) ; return maybeSend ; }
Handle a completed request producing an optional response
231
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147,156
public static Authentication build ( String crypt ) throws IllegalArgumentException { if ( crypt == null ) { return new PlainAuth ( null ) ; } String [ ] value = crypt . split ( ":" ) ; if ( value . length == 2 ) { String type = value [ 0 ] . trim ( ) ; String password = value [ 1 ] . trim ( ) ; if ( password != null && password . length ( ) > 0 ) { if ( "plain" . equals ( type ) ) { return new PlainAuth ( password ) ; } if ( "md5" . equals ( type ) ) { return new Md5Auth ( password ) ; } if ( "crc32" . equals ( type ) ) { return new Crc32Auth ( Long . parseLong ( password ) ) ; } } } throw new IllegalArgumentException ( "error password: " + crypt ) ; }
build an Authentication .
185
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public static Broker createBroker ( int id , String brokerInfoString ) { String [ ] brokerInfo = brokerInfoString . split ( ":" ) ; String creator = brokerInfo [ 0 ] . replace ( ' ' , ' ' ) ; String hostname = brokerInfo [ 1 ] . replace ( ' ' , ' ' ) ; String port = brokerInfo [ 2 ] ; boolean autocreated = Boolean . valueOf ( brokerInfo . length > 3 ? brokerInfo [ 3 ] : "true" ) ; return new Broker ( id , creator , hostname , Integer . parseInt ( port ) , autocreated ) ; }
create a broker with given broker info
133
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public static StringConsumers buildConsumer ( final String zookeeperConfig , // final String topic , // final String groupId , // final IMessageListener < String > listener ) { return buildConsumer ( zookeeperConfig , topic , groupId , listener , 2 ) ; }
create a consumer
57
3
147,159
public MessageSet read ( long readOffset , long size ) throws IOException { return new FileMessageSet ( channel , this . offset + readOffset , // Math . min ( this . offset + readOffset + size , highWaterMark ( ) ) , false , new AtomicBoolean ( false ) ) ; }
read message from file
64
4
147,160
public long [ ] append ( MessageSet messages ) throws IOException { checkMutable ( ) ; long written = 0L ; while ( written < messages . getSizeInBytes ( ) ) written += messages . writeTo ( channel , 0 , messages . getSizeInBytes ( ) ) ; long beforeOffset = setSize . getAndAdd ( written ) ; return new long [ ] { written , beforeOffset } ; }
Append this message to the message set
87
8
147,161
public void flush ( ) throws IOException { checkMutable ( ) ; long startTime = System . currentTimeMillis ( ) ; channel . force ( true ) ; long elapsedTime = System . currentTimeMillis ( ) - startTime ; LogFlushStats . recordFlushRequest ( elapsedTime ) ; logger . debug ( "flush time " + elapsedTime ) ; setHighWaterMark . set ( getSizeInBytes ( ) ) ; logger . debug ( "flush high water mark:" + highWaterMark ( ) ) ; }
Commit all written data to the physical disk
112
9
147,162
private long recover ( ) throws IOException { checkMutable ( ) ; long len = channel . size ( ) ; ByteBuffer buffer = ByteBuffer . allocate ( 4 ) ; long validUpTo = 0 ; long next = 0L ; do { next = validateMessage ( channel , validUpTo , len , buffer ) ; if ( next >= 0 ) validUpTo = next ; } while ( next >= 0 ) ; channel . truncate ( validUpTo ) ; setSize . set ( validUpTo ) ; setHighWaterMark . set ( validUpTo ) ; logger . info ( "recover high water mark:" + highWaterMark ( ) ) ; /* This should not be necessary, but fixes bug 6191269 on some OSs. */ channel . position ( validUpTo ) ; needRecover . set ( false ) ; return len - validUpTo ; }
Recover log up to the last complete entry . Truncate off any bytes from any incomplete messages written
184
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147,163
private long validateMessage ( FileChannel channel , long start , long len , ByteBuffer buffer ) throws IOException { buffer . rewind ( ) ; int read = channel . read ( buffer , start ) ; if ( read < 4 ) return - 1 ; // check that we have sufficient bytes left in the file int size = buffer . getInt ( 0 ) ; if ( size < Message . MinHeaderSize ) return - 1 ; long next = start + 4 + size ; if ( next > len ) return - 1 ; // read the message ByteBuffer messageBuffer = ByteBuffer . allocate ( size ) ; long curr = start + 4 ; while ( messageBuffer . hasRemaining ( ) ) { read = channel . read ( messageBuffer , curr ) ; if ( read < 0 ) throw new IllegalStateException ( "File size changed during recovery!" ) ; else curr += read ; } messageBuffer . rewind ( ) ; Message message = new Message ( messageBuffer ) ; if ( ! message . isValid ( ) ) return - 1 ; else return next ; }
Read validate and discard a single message returning the next valid offset and the message being validated
222
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public int createPartitions ( String topic , int partitionNum , boolean enlarge ) throws IOException { KV < Receive , ErrorMapping > response = send ( new CreaterRequest ( topic , partitionNum , enlarge ) ) ; return Utils . deserializeIntArray ( response . k . buffer ( ) ) [ 0 ] ; }
create partitions in the broker
71
5
147,165
public int deleteTopic ( String topic , String password ) throws IOException { KV < Receive , ErrorMapping > response = send ( new DeleterRequest ( topic , password ) ) ; return Utils . deserializeIntArray ( response . k . buffer ( ) ) [ 0 ] ; }
delete topic never used
63
4
147,166
public ByteBuffer payload ( ) { ByteBuffer payload = buffer . duplicate ( ) ; payload . position ( headerSize ( magic ( ) ) ) ; payload = payload . slice ( ) ; payload . limit ( payloadSize ( ) ) ; payload . rewind ( ) ; return payload ; }
get the real data without message header
59
7
147,167
private void validateSegments ( List < LogSegment > segments ) { synchronized ( lock ) { for ( int i = 0 ; i < segments . size ( ) - 1 ; i ++ ) { LogSegment curr = segments . get ( i ) ; LogSegment next = segments . get ( i + 1 ) ; if ( curr . start ( ) + curr . size ( ) != next . start ( ) ) { throw new IllegalStateException ( "The following segments don't validate: " + curr . getFile ( ) . getAbsolutePath ( ) + ", " + next . getFile ( ) . getAbsolutePath ( ) ) ; } } } }
Check that the ranges and sizes add up otherwise we have lost some data somewhere
144
15
147,168
public MessageSet read ( long offset , int length ) throws IOException { List < LogSegment > views = segments . getView ( ) ; LogSegment found = findRange ( views , offset , views . size ( ) ) ; if ( found == null ) { if ( logger . isTraceEnabled ( ) ) { logger . trace ( format ( "NOT FOUND MessageSet from Log[%s], offset=%d, length=%d" , name , offset , length ) ) ; } return MessageSet . Empty ; } return found . getMessageSet ( ) . read ( offset - found . start ( ) , length ) ; }
read messages beginning from offset
136
5
147,169
public void flush ( ) throws IOException { if ( unflushed . get ( ) == 0 ) return ; synchronized ( lock ) { if ( logger . isTraceEnabled ( ) ) { logger . debug ( "Flushing log '" + name + "' last flushed: " + getLastFlushedTime ( ) + " current time: " + System . currentTimeMillis ( ) ) ; } segments . getLastView ( ) . getMessageSet ( ) . flush ( ) ; unflushed . set ( 0 ) ; lastflushedTime . set ( System . currentTimeMillis ( ) ) ; } }
Flush this log file to the physical disk
128
9
147,170
public static < T extends Range > T findRange ( List < T > ranges , long value , int arraySize ) { if ( ranges . size ( ) < 1 ) return null ; T first = ranges . get ( 0 ) ; T last = ranges . get ( arraySize - 1 ) ; // check out of bounds if ( value < first . start ( ) || value > last . start ( ) + last . size ( ) ) { throw new OffsetOutOfRangeException ( format ( "offset %s is out of range (%s, %s)" , // value , first . start ( ) , last . start ( ) + last . size ( ) ) ) ; } // check at the end if ( value == last . start ( ) + last . size ( ) ) return null ; int low = 0 ; int high = arraySize - 1 ; while ( low <= high ) { int mid = ( high + low ) / 2 ; T found = ranges . get ( mid ) ; if ( found . contains ( value ) ) { return found ; } else if ( value < found . start ( ) ) { high = mid - 1 ; } else { low = mid + 1 ; } } return null ; }
Find a given range object in a list of ranges by a value in that range . Does a binary search over the ranges but instead of checking for equality looks within the range . Takes the array size as an option in case the array grows while searching happens
253
50
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public static String nameFromOffset ( long offset ) { NumberFormat nf = NumberFormat . getInstance ( ) ; nf . setMinimumIntegerDigits ( 20 ) ; nf . setMaximumFractionDigits ( 0 ) ; nf . setGroupingUsed ( false ) ; return nf . format ( offset ) + Log . FileSuffix ; }
Make log segment file name from offset bytes . All this does is pad out the offset number with zeros so that ls sorts the files numerically
77
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147,172
List < LogSegment > markDeletedWhile ( LogSegmentFilter filter ) throws IOException { synchronized ( lock ) { List < LogSegment > view = segments . getView ( ) ; List < LogSegment > deletable = new ArrayList < LogSegment > ( ) ; for ( LogSegment seg : view ) { if ( filter . filter ( seg ) ) { deletable . add ( seg ) ; } } for ( LogSegment seg : deletable ) { seg . setDeleted ( true ) ; } int numToDelete = deletable . size ( ) ; // // if we are deleting everything, create a new empty segment if ( numToDelete == view . size ( ) ) { if ( view . get ( numToDelete - 1 ) . size ( ) > 0 ) { roll ( ) ; } else { // If the last segment to be deleted is empty and we roll the log, the new segment will have the same // file name. So simply reuse the last segment and reset the modified time. view . get ( numToDelete - 1 ) . getFile ( ) . setLastModified ( System . currentTimeMillis ( ) ) ; numToDelete -= 1 ; } } return segments . trunc ( numToDelete ) ; } }
Delete any log segments matching the given predicate function
272
9
147,173
public void verifyMessageSize ( int maxMessageSize ) { Iterator < MessageAndOffset > shallowIter = internalIterator ( true ) ; while ( shallowIter . hasNext ( ) ) { MessageAndOffset messageAndOffset = shallowIter . next ( ) ; int payloadSize = messageAndOffset . message . payloadSize ( ) ; if ( payloadSize > maxMessageSize ) { throw new MessageSizeTooLargeException ( "payload size of " + payloadSize + " larger than " + maxMessageSize ) ; } } }
check max size of each message
109
6
147,174
public void close ( ) { Closer . closeQuietly ( acceptor ) ; for ( Processor processor : processors ) { Closer . closeQuietly ( processor ) ; } }
Shutdown the socket server
39
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147,175
public void startup ( ) throws InterruptedException { final int maxCacheConnectionPerThread = serverConfig . getMaxConnections ( ) / processors . length ; logger . debug ( "start {} Processor threads" , processors . length ) ; for ( int i = 0 ; i < processors . length ; i ++ ) { processors [ i ] = new Processor ( handlerFactory , stats , maxRequestSize , maxCacheConnectionPerThread ) ; Utils . newThread ( "jafka-processor-" + i , processors [ i ] , false ) . start ( ) ; } Utils . newThread ( "jafka-acceptor" , acceptor , false ) . start ( ) ; acceptor . awaitStartup ( ) ; }
Start the socket server and waiting for finished
153
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147,176
public static List < String > getChildrenParentMayNotExist ( ZkClient zkClient , String path ) { try { return zkClient . getChildren ( path ) ; } catch ( ZkNoNodeException e ) { return null ; } }
get children nodes name
54
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147,177
public static Cluster getCluster ( ZkClient zkClient ) { Cluster cluster = new Cluster ( ) ; List < String > nodes = getChildrenParentMayNotExist ( zkClient , BrokerIdsPath ) ; for ( String node : nodes ) { final String brokerInfoString = readData ( zkClient , BrokerIdsPath + "/" + node ) ; cluster . add ( Broker . createBroker ( Integer . valueOf ( node ) , brokerInfoString ) ) ; } return cluster ; }
read all brokers in the zookeeper
111
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147,178
public static Map < String , List < String > > getPartitionsForTopics ( ZkClient zkClient , Collection < String > topics ) { Map < String , List < String > > ret = new HashMap < String , List < String > > ( ) ; for ( String topic : topics ) { List < String > partList = new ArrayList < String > ( ) ; List < String > brokers = getChildrenParentMayNotExist ( zkClient , BrokerTopicsPath + "/" + topic ) ; if ( brokers != null ) { for ( String broker : brokers ) { final String parts = readData ( zkClient , BrokerTopicsPath + "/" + topic + "/" + broker ) ; int nParts = Integer . parseInt ( parts ) ; for ( int i = 0 ; i < nParts ; i ++ ) { partList . add ( broker + "-" + i ) ; } } } Collections . sort ( partList ) ; ret . put ( topic , partList ) ; } return ret ; }
read broker info for watching topics
218
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147,179
public static Map < String , List < String > > getConsumersPerTopic ( ZkClient zkClient , String group ) { ZkGroupDirs dirs = new ZkGroupDirs ( group ) ; List < String > consumers = getChildrenParentMayNotExist ( zkClient , dirs . consumerRegistryDir ) ; // Map < String , List < String > > consumersPerTopicMap = new HashMap < String , List < String > > ( ) ; for ( String consumer : consumers ) { TopicCount topicCount = getTopicCount ( zkClient , group , consumer ) ; for ( Map . Entry < String , Set < String > > e : topicCount . getConsumerThreadIdsPerTopic ( ) . entrySet ( ) ) { final String topic = e . getKey ( ) ; for ( String consumerThreadId : e . getValue ( ) ) { List < String > list = consumersPerTopicMap . get ( topic ) ; if ( list == null ) { list = new ArrayList < String > ( ) ; consumersPerTopicMap . put ( topic , list ) ; } // list . add ( consumerThreadId ) ; } } } // for ( Map . Entry < String , List < String > > e : consumersPerTopicMap . entrySet ( ) ) { Collections . sort ( e . getValue ( ) ) ; } return consumersPerTopicMap ; }
get all consumers for the group
295
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147,180
public static void createEphemeralPath ( ZkClient zkClient , String path , String data ) { try { zkClient . createEphemeral ( path , Utils . getBytes ( data ) ) ; } catch ( ZkNoNodeException e ) { createParentPath ( zkClient , path ) ; zkClient . createEphemeral ( path , Utils . getBytes ( data ) ) ; } }
Create an ephemeral node with the given path and data . Create parents if necessary .
91
18
147,181
public void addProducer ( Broker broker ) { Properties props = new Properties ( ) ; props . put ( "host" , broker . host ) ; props . put ( "port" , "" + broker . port ) ; props . putAll ( config . getProperties ( ) ) ; if ( sync ) { SyncProducer producer = new SyncProducer ( new SyncProducerConfig ( props ) ) ; logger . info ( "Creating sync producer for broker id = " + broker . id + " at " + broker . host + ":" + broker . port ) ; syncProducers . put ( broker . id , producer ) ; } else { AsyncProducer < V > producer = new AsyncProducer < V > ( new AsyncProducerConfig ( props ) , // new SyncProducer ( new SyncProducerConfig ( props ) ) , // serializer , // eventHandler , // config . getEventHandlerProperties ( ) , // this . callbackHandler , // config . getCbkHandlerProperties ( ) ) ; producer . start ( ) ; logger . info ( "Creating async producer for broker id = " + broker . id + " at " + broker . host + ":" + broker . port ) ; asyncProducers . put ( broker . id , producer ) ; } }
add a new producer either synchronous or asynchronous connecting to the specified broker
274
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147,182
public void send ( ProducerPoolData < V > ppd ) { if ( logger . isDebugEnabled ( ) ) { logger . debug ( "send message: " + ppd ) ; } if ( sync ) { Message [ ] messages = new Message [ ppd . data . size ( ) ] ; int index = 0 ; for ( V v : ppd . data ) { messages [ index ] = serializer . toMessage ( v ) ; index ++ ; } ByteBufferMessageSet bbms = new ByteBufferMessageSet ( config . getCompressionCodec ( ) , messages ) ; ProducerRequest request = new ProducerRequest ( ppd . topic , ppd . partition . partId , bbms ) ; SyncProducer producer = syncProducers . get ( ppd . partition . brokerId ) ; if ( producer == null ) { throw new UnavailableProducerException ( "Producer pool has not been initialized correctly. " + "Sync Producer for broker " + ppd . partition . brokerId + " does not exist in the pool" ) ; } producer . send ( request . topic , request . partition , request . messages ) ; } else { AsyncProducer < V > asyncProducer = asyncProducers . get ( ppd . partition . brokerId ) ; for ( V v : ppd . data ) { asyncProducer . send ( ppd . topic , v , ppd . partition . partId ) ; } } }
selects either a synchronous or an asynchronous producer for the specified broker id and calls the send API on the selected producer to publish the data to the specified broker partition
305
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147,183
public void close ( ) { logger . info ( "Closing all sync producers" ) ; if ( sync ) { for ( SyncProducer p : syncProducers . values ( ) ) { p . close ( ) ; } } else { for ( AsyncProducer < V > p : asyncProducers . values ( ) ) { p . close ( ) ; } } }
Closes all the producers in the pool
79
8
147,184
public ProducerPoolData < V > getProducerPoolData ( String topic , Partition bidPid , List < V > data ) { return new ProducerPoolData < V > ( topic , bidPid , data ) ; }
This constructs and returns the request object for the producer pool
48
11
147,185
public static ProducerRequest readFrom ( ByteBuffer buffer ) { String topic = Utils . readShortString ( buffer ) ; int partition = buffer . getInt ( ) ; int messageSetSize = buffer . getInt ( ) ; ByteBuffer messageSetBuffer = buffer . slice ( ) ; messageSetBuffer . limit ( messageSetSize ) ; buffer . position ( buffer . position ( ) + messageSetSize ) ; return new ProducerRequest ( topic , partition , new ByteBufferMessageSet ( messageSetBuffer ) ) ; }
read a producer request from buffer
107
6
147,186
protected String getExpectedMessage ( ) { StringBuilder syntax = new StringBuilder ( "<tag> " ) ; syntax . append ( getName ( ) ) ; String args = getArgSyntax ( ) ; if ( args != null && args . length ( ) > 0 ) { syntax . append ( ' ' ) ; syntax . append ( args ) ; } return syntax . toString ( ) ; }
Provides a message which describes the expected format and arguments for this command . This is used to provide user feedback when a command request is malformed .
83
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147,187
public ServerSetup createCopy ( String bindAddress ) { ServerSetup setup = new ServerSetup ( getPort ( ) , bindAddress , getProtocol ( ) ) ; setup . setServerStartupTimeout ( getServerStartupTimeout ( ) ) ; setup . setConnectionTimeout ( getConnectionTimeout ( ) ) ; setup . setReadTimeout ( getReadTimeout ( ) ) ; setup . setWriteTimeout ( getWriteTimeout ( ) ) ; setup . setVerbose ( isVerbose ( ) ) ; return setup ; }
Create a deep copy .
109
5
147,188
public static ServerSetup [ ] verbose ( ServerSetup [ ] serverSetups ) { ServerSetup [ ] copies = new ServerSetup [ serverSetups . length ] ; for ( int i = 0 ; i < serverSetups . length ; i ++ ) { copies [ i ] = serverSetups [ i ] . createCopy ( ) . setVerbose ( true ) ; } return copies ; }
Creates a copy with verbose mode enabled .
84
10
147,189
public void doRun ( Properties properties ) { ServerSetup [ ] serverSetup = new PropertiesBasedServerSetupBuilder ( ) . build ( properties ) ; if ( serverSetup . length == 0 ) { printUsage ( System . out ) ; } else { greenMail = new GreenMail ( serverSetup ) ; log . info ( "Starting GreenMail standalone v{} using {}" , BuildInfo . INSTANCE . getProjectVersion ( ) , Arrays . toString ( serverSetup ) ) ; greenMail . withConfiguration ( new PropertiesBasedGreenMailConfigurationBuilder ( ) . build ( properties ) ) . start ( ) ; } }
Start and configure GreenMail using given properties .
129
9
147,190
private String decodeStr ( String str ) { try { return MimeUtility . decodeText ( str ) ; } catch ( UnsupportedEncodingException e ) { return str ; } }
Returns the decoded string in case it contains non us - ascii characters . Returns the same string if it doesn t or the passed value in case of an UnsupportedEncodingException .
39
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147,191
public static void copyStream ( final InputStream src , OutputStream dest ) throws IOException { byte [ ] buffer = new byte [ 1024 ] ; int read ; while ( ( read = src . read ( buffer ) ) > - 1 ) { dest . write ( buffer , 0 , read ) ; } dest . flush ( ) ; }
Writes the content of an input stream to an output stream
69
12
147,192
public static int getLineCount ( String str ) { if ( null == str || str . isEmpty ( ) ) { return 0 ; } int count = 1 ; for ( char c : str . toCharArray ( ) ) { if ( ' ' == c ) { count ++ ; } } return count ; }
Counts the number of lines .
65
7
147,193
public static void sendTextEmail ( String to , String from , String subject , String msg , final ServerSetup setup ) { sendMimeMessage ( createTextEmail ( to , from , subject , msg , setup ) ) ; }
Sends a text message using given server setup for SMTP .
47
13
147,194
public static void sendMimeMessage ( MimeMessage mimeMessage ) { try { Transport . send ( mimeMessage ) ; } catch ( MessagingException e ) { throw new IllegalStateException ( "Can not send message " + mimeMessage , e ) ; } }
Send the message using the JavaMail session defined in the message
58
12
147,195
public static void sendMessageBody ( String to , String from , String subject , Object body , String contentType , ServerSetup serverSetup ) { try { Session smtpSession = getSession ( serverSetup ) ; MimeMessage mimeMessage = new MimeMessage ( smtpSession ) ; mimeMessage . setRecipients ( Message . RecipientType . TO , to ) ; mimeMessage . setFrom ( from ) ; mimeMessage . setSubject ( subject ) ; mimeMessage . setContent ( body , contentType ) ; sendMimeMessage ( mimeMessage ) ; } catch ( MessagingException e ) { throw new IllegalStateException ( "Can not send message" , e ) ; } }
Send the message with the given attributes and the given body using the specified SMTP settings
150
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147,196
public static MimeMultipart createMultipartWithAttachment ( String msg , final byte [ ] attachment , final String contentType , final String filename , String description ) { try { MimeMultipart multiPart = new MimeMultipart ( ) ; MimeBodyPart textPart = new MimeBodyPart ( ) ; multiPart . addBodyPart ( textPart ) ; textPart . setText ( msg ) ; MimeBodyPart binaryPart = new MimeBodyPart ( ) ; multiPart . addBodyPart ( binaryPart ) ; DataSource ds = new DataSource ( ) { @ Override public InputStream getInputStream ( ) throws IOException { return new ByteArrayInputStream ( attachment ) ; } @ Override public OutputStream getOutputStream ( ) throws IOException { ByteArrayOutputStream byteStream = new ByteArrayOutputStream ( ) ; byteStream . write ( attachment ) ; return byteStream ; } @ Override public String getContentType ( ) { return contentType ; } @ Override public String getName ( ) { return filename ; } } ; binaryPart . setDataHandler ( new DataHandler ( ds ) ) ; binaryPart . setFileName ( filename ) ; binaryPart . setDescription ( description ) ; return multiPart ; } catch ( MessagingException e ) { throw new IllegalArgumentException ( "Can not create multipart message with attachment" , e ) ; } }
Create new multipart with a text part and an attachment
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public static Session getSession ( final ServerSetup setup , Properties mailProps ) { Properties props = setup . configureJavaMailSessionProperties ( mailProps , false ) ; log . debug ( "Mail session properties are {}" , props ) ; return Session . getInstance ( props , null ) ; }
Gets a JavaMail Session for given server type such as IMAP and additional props for JavaMail .
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public static void setQuota ( final GreenMailUser user , final Quota quota ) { Session session = GreenMailUtil . getSession ( ServerSetupTest . IMAP ) ; try { Store store = session . getStore ( "imap" ) ; store . connect ( user . getEmail ( ) , user . getPassword ( ) ) ; try { ( ( QuotaAwareStore ) store ) . setQuota ( quota ) ; } finally { store . close ( ) ; } } catch ( Exception ex ) { throw new IllegalStateException ( "Can not set quota " + quota + " for user " + user , ex ) ; } }
Sets a quota for a users .
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public boolean hasUser ( String userId ) { String normalized = normalizerUserName ( userId ) ; return loginToUser . containsKey ( normalized ) || emailToUser . containsKey ( normalized ) ; }
Checks if user exists .
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6