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UDR_Java

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int64
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private static void addClasspathEntries ( final Object owner , final ClassLoader classLoader , final ClasspathOrder classpathOrderOut , final ScanSpec scanSpec , final LogNode log ) { // type ClasspathEntry[] final Object entries = ReflectionUtils . getFieldVal ( owner , "entries" , false ) ; if ( entries != null ) { f...
Adds the classpath entries .
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static ClassTypeSignature parse ( final String typeDescriptor , final ClassInfo classInfo ) throws ParseException { final Parser parser = new Parser ( typeDescriptor ) ; // The defining class name is used to resolve type variables using the defining class' type descriptor. // But here we are parsing the defining class'...
Parse a class type signature or class type descriptor .
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public TypeSignature getTypeDescriptor ( ) { if ( typeDescriptorStr == null ) { return null ; } if ( typeDescriptor == null ) { try { typeDescriptor = TypeSignature . parse ( typeDescriptorStr , declaringClassName ) ; typeDescriptor . setScanResult ( scanResult ) ; } catch ( final ParseException e ) { throw new Illegal...
Returns the parsed type descriptor for the field if available .
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public TypeSignature getTypeSignature ( ) { if ( typeSignatureStr == null ) { return null ; } if ( typeSignature == null ) { try { typeSignature = TypeSignature . parse ( typeSignatureStr , declaringClassName ) ; typeSignature . setScanResult ( scanResult ) ; } catch ( final ParseException e ) { throw new IllegalArgume...
Returns the parsed type signature for the field if available .
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@ Override public int compareTo ( final FieldInfo other ) { final int diff = declaringClassName . compareTo ( other . declaringClassName ) ; if ( diff != 0 ) { return diff ; } return name . compareTo ( other . name ) ; }
Sort in order of class name then field name .
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private List < ClasspathElementModule > getModuleOrder ( final LogNode log ) throws InterruptedException { final List < ClasspathElementModule > moduleCpEltOrder = new ArrayList <> ( ) ; if ( scanSpec . overrideClasspath == null && scanSpec . overrideClassLoaders == null && scanSpec . scanModules ) { // Add modules to ...
Get the module order .
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private static void findClasspathOrderRec ( final ClasspathElement currClasspathElement , final Set < ClasspathElement > visitedClasspathElts , final List < ClasspathElement > order ) { if ( visitedClasspathElts . add ( currClasspathElement ) ) { if ( ! currClasspathElement . skipClasspathElement ) { // Don't add a cla...
Recursively perform a depth - first search of jar interdependencies breaking cycles if necessary to determine the final classpath element order .
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private static List < ClasspathElement > orderClasspathElements ( final Collection < Entry < Integer , ClasspathElement > > classpathEltsIndexed ) { final List < Entry < Integer , ClasspathElement > > classpathEltsIndexedOrdered = new ArrayList <> ( classpathEltsIndexed ) ; CollectionUtils . sortIfNotEmpty ( classpathE...
Sort a collection of indexed ClasspathElements into increasing order of integer index key .
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private List < ClasspathElement > findClasspathOrder ( final Set < ClasspathElement > uniqueClasspathElements , final Queue < Entry < Integer , ClasspathElement > > toplevelClasspathEltsIndexed ) { final List < ClasspathElement > toplevelClasspathEltsOrdered = orderClasspathElements ( toplevelClasspathEltsIndexed ) ; f...
Recursively perform a depth - first traversal of child classpath elements breaking cycles if necessary to determine the final classpath element order . This causes child classpath elements to be inserted in - place in the classpath order after the parent classpath element that contained them .
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private < W > void processWorkUnits ( final Collection < W > workUnits , final LogNode log , final WorkUnitProcessor < W > workUnitProcessor ) throws InterruptedException , ExecutionException { WorkQueue . runWorkQueue ( workUnits , executorService , interruptionChecker , numParallelTasks , log , workUnitProcessor ) ; ...
Process work units .
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@ Override public ScanResult call ( ) throws InterruptedException , CancellationException , ExecutionException { ScanResult scanResult = null ; Exception exception = null ; final long scanStart = System . currentTimeMillis ( ) ; try { // Perform the scan scanResult = openClasspathElementsThenScan ( ) ; // Log total tim...
Determine the unique ordered classpath elements and run a scan looking for file or classfile matches if necessary .
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public List < String > list ( ) throws SecurityException { if ( collectorsToList == null ) { throw new IllegalArgumentException ( "Could not call Collectors.toList()" ) ; } final Object /* Stream<String> */ resourcesStream = ReflectionUtils . invokeMethod ( moduleReader , "list" , /* throwException = */ true ) ; if ( r...
Get the list of resources accessible to a ModuleReader .
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private Object openOrRead ( final String path , final boolean open ) throws SecurityException { final String methodName = open ? "open" : "read" ; final Object /* Optional<InputStream> */ optionalInputStream = ReflectionUtils . invokeMethod ( moduleReader , methodName , String . class , path , /* throwException = */ tr...
Use the proxied ModuleReader to open the named resource as an InputStream .
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private static void findMetaAnnotations ( final AnnotationInfo ai , final AnnotationInfoList allAnnotationsOut , final Set < ClassInfo > visited ) { final ClassInfo annotationClassInfo = ai . getClassInfo ( ) ; if ( annotationClassInfo != null && annotationClassInfo . annotationInfo != null // Don't get in a cycle && v...
Find the transitive closure of meta - annotations .
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public boolean containsName ( final String methodName ) { for ( final MethodInfo mi : this ) { if ( mi . getName ( ) . equals ( methodName ) ) { return true ; } } return false ; }
Check whether the list contains a method with the given name .
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private int read ( final int off , final int len ) throws IOException { if ( len == 0 ) { return 0 ; } if ( inputStream != null ) { // Wrapped InputStream return inputStream . read ( buf , off , len ) ; } else { // Wrapped ByteBuffer final int bytesRemainingInBuf = byteBuffer != null ? byteBuffer . remaining ( ) : buf ...
Copy up to len bytes into buf starting at the given offset .
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private void readMore ( final int bytesRequired ) throws IOException { if ( ( long ) used + ( long ) bytesRequired > FileUtils . MAX_BUFFER_SIZE ) { // Since buf is an array, we're limited to reading 2GB per file throw new IOException ( "File is larger than 2GB, cannot read it" ) ; } // Read INITIAL_BUFFER_CHUNK_SIZE f...
Read another chunk of from the InputStream or ByteBuffer .
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public void skip ( final int bytesToSkip ) throws IOException { final int bytesToRead = Math . max ( 0 , curr + bytesToSkip - used ) ; if ( bytesToRead > 0 ) { readMore ( bytesToRead ) ; } curr += bytesToSkip ; }
Skip the given number of bytes .
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public List < String > getPaths ( ) { final List < String > resourcePaths = new ArrayList <> ( this . size ( ) ) ; for ( final Resource resource : this ) { resourcePaths . add ( resource . getPath ( ) ) ; } return resourcePaths ; }
Get the paths of all resources in this list relative to the package root .
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public static ClassGraphException newClassGraphException ( final String message , final Throwable cause ) throws ClassGraphException { return new ClassGraphException ( message , cause ) ; }
Static factory method to stop IDEs from auto - completing ClassGraphException after new ClassGraph .
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static ArrayTypeSignature parse ( final Parser parser , final String definingClassName ) throws ParseException { int numArrayDims = 0 ; while ( parser . peek ( ) == ' ' ) { numArrayDims ++ ; parser . next ( ) ; } if ( numArrayDims > 0 ) { final TypeSignature elementTypeSignature = TypeSignature . parse ( parser , defin...
Parses the array type signature .
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public static String normalizeURLPath ( final String urlPath ) { String urlPathNormalized = urlPath ; if ( ! urlPathNormalized . startsWith ( "jrt:" ) && ! urlPathNormalized . startsWith ( "http://" ) && ! urlPathNormalized . startsWith ( "https://" ) ) { // Any URL with the "jar:" prefix must have "/" after any "!" ur...
Normalize a URL path so that it can be fed into the URL or URI constructor .
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public boolean canGetAsSlice ( ) throws IOException , InterruptedException { final long dataStartOffsetWithinPhysicalZipFile = getEntryDataStartOffsetWithinPhysicalZipFile ( ) ; return ! isDeflated // && dataStartOffsetWithinPhysicalZipFile / FileUtils . MAX_BUFFER_SIZE // == ( dataStartOffsetWithinPhysicalZipFile + un...
True if the entire zip entry can be opened as a single ByteBuffer slice .
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public byte [ ] load ( ) throws IOException , InterruptedException { try ( InputStream is = open ( ) ) { return FileUtils . readAllBytesAsArray ( is , uncompressedSize ) ; } }
Load the content of the zip entry and return it as a byte array .
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@ Override public int compareTo ( final FastZipEntry o ) { final int diff0 = o . version - this . version ; if ( diff0 != 0 ) { return diff0 ; } final int diff1 = entryNameUnversioned . compareTo ( o . entryNameUnversioned ) ; if ( diff1 != 0 ) { return diff1 ; } final int diff2 = entryName . compareTo ( o . entryName ...
Sort in decreasing order of version number then lexicographically increasing order of unversioned entry path .
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private static boolean hasTypeVariables ( final Type type ) { if ( type instanceof TypeVariable < ? > || type instanceof GenericArrayType ) { return true ; } else if ( type instanceof ParameterizedType ) { for ( final Type arg : ( ( ParameterizedType ) type ) . getActualTypeArguments ( ) ) { if ( hasTypeVariables ( arg...
Check if the type has type variables .
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public Constructor < ? > getConstructorForFieldTypeWithSizeHint ( final Type fieldTypeFullyResolved , final ClassFieldCache classFieldCache ) { if ( ! isTypeVariable ) { return constructorForFieldTypeWithSizeHint ; } else { final Class < ? > fieldRawTypeFullyResolved = JSONUtils . getRawType ( fieldTypeFullyResolved ) ...
Get the constructor with size hint for the field type .
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public Constructor < ? > getDefaultConstructorForFieldType ( final Type fieldTypeFullyResolved , final ClassFieldCache classFieldCache ) { if ( ! isTypeVariable ) { return defaultConstructorForFieldType ; } else { final Class < ? > fieldRawTypeFullyResolved = JSONUtils . getRawType ( fieldTypeFullyResolved ) ; return c...
Get the default constructor for the field type .
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private static void appendPathElt ( final Object pathElt , final StringBuilder buf ) { if ( buf . length ( ) > 0 ) { buf . append ( File . pathSeparatorChar ) ; } // Escape any rogue path separators, as long as file separator is not '\\' (on Windows, if there are any // extra ';' characters in a path element, there's r...
Append a path element to a buffer .
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public static String leafName ( final String path ) { final int bangIdx = path . indexOf ( ' ' ) ; final int endIdx = bangIdx >= 0 ? bangIdx : path . length ( ) ; int leafStartIdx = 1 + ( File . separatorChar == ' ' ? path . lastIndexOf ( ' ' , endIdx ) : Math . max ( path . lastIndexOf ( ' ' , endIdx ) , path . lastIn...
Returns the leafname of a path after first stripping off everything after the first ! if present .
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public static String classfilePathToClassName ( final String classfilePath ) { if ( ! classfilePath . endsWith ( ".class" ) ) { throw new IllegalArgumentException ( "Classfile path does not end with \".class\": " + classfilePath ) ; } return classfilePath . substring ( 0 , classfilePath . length ( ) - 6 ) . replace ( '...
Convert a classfile path to the corresponding class name .
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static BaseTypeSignature parse ( final Parser parser ) { switch ( parser . peek ( ) ) { case ' ' : parser . next ( ) ; return new BaseTypeSignature ( "byte" ) ; case ' ' : parser . next ( ) ; return new BaseTypeSignature ( "char" ) ; case ' ' : parser . next ( ) ; return new BaseTypeSignature ( "double" ) ; case ' ' : ...
Parse a base type .
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private static String getPath ( final Object classpath ) { final Object container = ReflectionUtils . getFieldVal ( classpath , "container" , false ) ; if ( container == null ) { return "" ; } final Object delegate = ReflectionUtils . getFieldVal ( container , "delegate" , false ) ; if ( delegate == null ) { return "" ...
Get the path from a classpath object .
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Set < String > findReferencedClassNames ( ) { final Set < String > allReferencedClassNames = new LinkedHashSet <> ( ) ; findReferencedClassNames ( allReferencedClassNames ) ; // Remove references to java.lang.Object allReferencedClassNames . remove ( "java.lang.Object" ) ; return allReferencedClassNames ; }
Get the names of all referenced classes .
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private static Map < CharSequence , Object > getInitialIdToObjectMap ( final Object objectInstance , final Object parsedJSON ) { final Map < CharSequence , Object > idToObjectInstance = new HashMap <> ( ) ; if ( parsedJSON instanceof JSONObject ) { final JSONObject itemJsonObject = ( JSONObject ) parsedJSON ; if ( ! it...
Set up the initial mapping from id to object by adding the id of the toplevel object if it has an id field in JSON .
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private static < T > T deserializeObject ( final Class < T > expectedType , final String json , final ClassFieldCache classFieldCache ) throws IllegalArgumentException { // Parse the JSON Object parsedJSON ; try { parsedJSON = JSONParser . parseJSON ( json ) ; } catch ( final ParseException e ) { throw new IllegalArgum...
Deserialize JSON to a new object graph with the root object of the specified expected type using or reusing the given type cache . Does not work for generic types since it is not possible to obtain the generic type of a Class reference .
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public static < T > T deserializeObject ( final Class < T > expectedType , final String json ) throws IllegalArgumentException { final ClassFieldCache classFieldCache = new ClassFieldCache ( /* resolveTypes = */ true , /* onlySerializePublicFields = */ false ) ; return deserializeObject ( expectedType , json , classFie...
Deserialize JSON to a new object graph with the root object of the specified expected type . Does not work for generic types since it is not possible to obtain the generic type of a Class reference .
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private static void findLayerOrder ( final Object /* ModuleLayer */ layer , final Set < Object > /* Set<ModuleLayer> */ layerVisited , final Set < Object > /* Set<ModuleLayer> */ parentLayers , final Deque < Object > /* Deque<ModuleLayer> */ layerOrderOut ) { if ( layerVisited . add ( layer ) ) { @ SuppressWarnings ( "...
Recursively find the topological sort order of ancestral layers .
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private static List < ModuleRef > findModuleRefs ( final LinkedHashSet < Object > layers , final ScanSpec scanSpec , final LogNode log ) { if ( layers . isEmpty ( ) ) { return Collections . emptyList ( ) ; } // Traverse the layer DAG to find the layer resolution order final Deque < Object > /* Deque<ModuleLayer> */ lay...
Get all visible ModuleReferences in a list of layers .
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static ClassRefTypeSignature parse ( final Parser parser , final String definingClassName ) throws ParseException { if ( parser . peek ( ) == ' ' ) { parser . next ( ) ; if ( ! TypeUtils . getIdentifierToken ( parser , /* separator = */ ' ' , /* separatorReplace = */ ' ' ) ) { throw new ParseException ( parser , "Could...
Parse a class type signature .
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private static boolean isParentFirstStrategy ( final ClassLoader classRealmInstance ) { final Object strategy = ReflectionUtils . getFieldVal ( classRealmInstance , "strategy" , false ) ; if ( strategy != null ) { final String strategyClassName = strategy . getClass ( ) . getName ( ) ; if ( strategyClassName . equals (...
Checks if is this classloader uses a parent - first strategy .
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public static boolean startsWith ( Msg msg , String data , boolean includeLength ) { final int length = data . length ( ) ; assert ( length < 256 ) ; int start = includeLength ? 1 : 0 ; if ( msg . size ( ) < length + start ) { return false ; } boolean comparison = includeLength ? length == ( msg . get ( 0 ) & 0xff ) : ...
Checks if the message starts with the given string .
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@ Override public void write ( final T value , boolean incomplete ) { // Place the value to the queue, add new terminator element. queue . push ( value ) ; // Move the "flush up to here" pointer. if ( ! incomplete ) { f = queue . backPos ( ) ; } }
flushed down the stream .
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@ Override public T unwrite ( ) { if ( f == queue . backPos ( ) ) { return null ; } queue . unpush ( ) ; return queue . back ( ) ; }
item exists false otherwise .
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@ Override public boolean flush ( ) { // If there are no un-flushed items, do nothing. if ( w == f ) { return true ; } // Try to set 'c' to 'f'. if ( ! c . compareAndSet ( w , f ) ) { // Compare-and-swap was unsuccessful because 'c' is NULL. // This means that the reader is asleep. Therefore we don't // care about thre...
wake the reader up before using the pipe again .
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@ Override public boolean checkRead ( ) { // Was the value prefetched already? If so, return. int h = queue . frontPos ( ) ; if ( h != r ) { return true ; } // There's no prefetched value, so let us prefetch more values. // Prefetching is to simply retrieve the // pointer from c in atomic fashion. If there are no // it...
Check whether item is available for reading .
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@ Override public ByteBuffer getBuffer ( ) { // If we are expected to read large message, we'll opt for zero- // copy, i.e. we'll ask caller to fill the data directly to the // message. Note that subsequent read(s) are non-blocking, thus // each single read reads at most SO_RCVBUF bytes at once not // depending on how ...
Returns a buffer to be filled with binary data .
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@ Override public Step . Result decode ( ByteBuffer data , int size , ValueReference < Integer > processed ) { processed . set ( 0 ) ; // In case of zero-copy simply adjust the pointers, no copying // is required. Also, run the state machine in case all the data // were processed. if ( zeroCopy ) { assert ( size <= toR...
bytes actually processed .
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public boolean rm ( Msg msg , int start , int size ) { // TODO: Shouldn't an error be reported if the key does not exist? if ( size == 0 ) { if ( refcnt == 0 ) { return false ; } refcnt -- ; return refcnt == 0 ; } assert ( msg != null ) ; byte c = msg . get ( start ) ; if ( count == 0 || c < min || c >= min + count ) {...
removed from the trie .
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public boolean check ( ByteBuffer data ) { assert ( data != null ) ; int size = data . limit ( ) ; // This function is on critical path. It deliberately doesn't use // recursion to get a bit better performance. Trie current = this ; int start = 0 ; while ( true ) { // We've found a corresponding subscription! if ( curr...
Check whether particular key is in the trie .
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public ZMsg duplicate ( ) { if ( frames . isEmpty ( ) ) { return null ; } else { ZMsg msg = new ZMsg ( ) ; for ( ZFrame f : frames ) { msg . add ( f . duplicate ( ) ) ; } return msg ; } }
Creates copy of this ZMsg . Also duplicates all frame content .
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public ZMsg wrap ( ZFrame frame ) { if ( frame != null ) { push ( new ZFrame ( "" ) ) ; push ( frame ) ; } return this ; }
Push frame plus empty frame to front of message before 1st frame . Message takes ownership of frame will destroy it when message is sent .
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public static ZMsg recvMsg ( Socket socket , boolean wait ) { return recvMsg ( socket , wait ? 0 : ZMQ . DONTWAIT ) ; }
Receives message from socket returns ZMsg object or null if the recv was interrupted .
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public static ZMsg recvMsg ( Socket socket , int flag ) { if ( socket == null ) { throw new IllegalArgumentException ( "socket is null" ) ; } ZMsg msg = new ZMsg ( ) ; while ( true ) { ZFrame f = ZFrame . recvFrame ( socket , flag ) ; if ( f == null ) { // If receive failed or was interrupted msg . destroy ( ) ; msg = ...
Receives message from socket returns ZMsg object or null if the recv was interrupted . Setting the flag to ZMQ . DONTWAIT does a non - blocking recv .
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public static boolean save ( ZMsg msg , DataOutputStream file ) { if ( msg == null ) { return false ; } try { // Write number of frames file . writeInt ( msg . size ( ) ) ; if ( msg . size ( ) > 0 ) { for ( ZFrame f : msg ) { // Write byte size of frame file . writeInt ( f . size ( ) ) ; // Write frame byte data file ....
Save message to an open data output stream .
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public static ZMsg newStringMsg ( String ... strings ) { ZMsg msg = new ZMsg ( ) ; for ( String data : strings ) { msg . addString ( data ) ; } return msg ; }
Create a new ZMsg from one or more Strings
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public ZMsg dump ( Appendable out ) { try { StringWriter sw = new StringWriter ( ) ; PrintWriter pw = new PrintWriter ( sw ) ; pw . printf ( "--------------------------------------\n" ) ; for ( ZFrame frame : frames ) { pw . printf ( "[%03d] %s\n" , frame . size ( ) , frame . toString ( ) ) ; } out . append ( sw . getB...
Dump the message in human readable format . This should only be used for debugging and tracing inefficient in handling large messages .
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@ Deprecated protected ZAgent agent ( Socket phone , String secret ) { return ZAgent . Creator . create ( phone , secret ) ; }
Creates a new agent for the star .
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public Ticket add ( long delay , TimerHandler handler , Object ... args ) { if ( handler == null ) { return null ; } Utils . checkArgument ( delay > 0 , "Delay of a ticket has to be strictly greater than 0" ) ; final Ticket ticket = new Ticket ( this , now ( ) , delay , handler , args ) ; insert ( ticket ) ; return tic...
Add ticket to the set .
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public long timeout ( ) { if ( tickets . isEmpty ( ) ) { return - 1 ; } sortIfNeeded ( ) ; // Tickets are sorted, so check first ticket Ticket first = tickets . get ( 0 ) ; return first . start - now ( ) + first . delay ; }
Returns the time in millisecond until the next ticket .
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public int execute ( ) { int executed = 0 ; final long now = now ( ) ; sortIfNeeded ( ) ; Set < Ticket > cancelled = new HashSet <> ( ) ; for ( Ticket ticket : this . tickets ) { if ( now - ticket . start < ticket . delay ) { // tickets are ordered, not meeting the condition means the next ones do not as well break ; }...
Execute the tickets .
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private NetProtocol checkProtocol ( String protocol ) { // First check out whether the protcol is something we are aware of. NetProtocol proto = NetProtocol . getProtocol ( protocol ) ; if ( proto == null || ! proto . valid ) { errno . set ( ZError . EPROTONOSUPPORT ) ; return proto ; } // Check whether socket type and...
bind is available and compatible with the socket type .
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private void addEndpoint ( String addr , Own endpoint , Pipe pipe ) { // Activate the session. Make it a child of this socket. launchChild ( endpoint ) ; endpoints . insert ( addr , new EndpointPipe ( endpoint , pipe ) ) ; }
Creates new endpoint ID and adds the endpoint to the map .
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final void startReaping ( Poller poller ) { // Plug the socket to the reaper thread. this . poller = poller ; SelectableChannel fd = mailbox . getFd ( ) ; handle = this . poller . addHandle ( fd , this ) ; this . poller . setPollIn ( handle ) ; // Initialize the termination and check whether it can be deallocated // im...
its poller .
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private boolean processCommands ( int timeout , boolean throttle ) { Command cmd ; if ( timeout != 0 ) { // If we are asked to wait, simply ask mailbox to wait. cmd = mailbox . recv ( timeout ) ; } else { // If we are asked not to wait, check whether we haven't processed // commands recently, so that we can throttle th...
in a predefined time period .
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private void extractFlags ( Msg msg ) { // Test whether IDENTITY flag is valid for this socket type. if ( msg . isIdentity ( ) ) { assert ( options . recvIdentity ) ; } // Remove MORE flag. rcvmore = msg . hasMore ( ) ; }
to be later retrieved by getSocketOpt .
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@ Override public String getAddress ( ) { if ( ( ( InetSocketAddress ) address . address ( ) ) . getPort ( ) == 0 ) { return address ( address ) ; } return address . toString ( ) ; }
Get the bound address for use with wildcards
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public boolean pathExists ( String path ) { String [ ] pathElements = path . split ( "/" ) ; ZConfig current = this ; for ( String pathElem : pathElements ) { if ( pathElem . isEmpty ( ) ) { continue ; } current = current . children . get ( pathElem ) ; if ( current == null ) { return false ; } } return true ; }
check if a value - path exists
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public String [ ] keypairZ85 ( ) { String [ ] pair = new String [ 2 ] ; byte [ ] publicKey = new byte [ Size . PUBLICKEY . bytes ( ) ] ; byte [ ] secretKey = new byte [ Size . SECRETKEY . bytes ( ) ] ; int rc = curve25519xsalsa20poly1305 . crypto_box_keypair ( publicKey , secretKey ) ; assert ( rc == 0 ) ; pair [ 0 ] =...
Generates a pair of Z85 - encoded keys for use with this class .
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public byte [ ] [ ] keypair ( ) { byte [ ] [ ] pair = new byte [ 2 ] [ ] ; byte [ ] publicKey = new byte [ Size . PUBLICKEY . bytes ( ) ] ; byte [ ] secretKey = new byte [ Size . SECRETKEY . bytes ( ) ] ; int rc = curve25519xsalsa20poly1305 . crypto_box_keypair ( publicKey , secretKey ) ; assert ( rc == 0 ) ; pair [ 0 ...
Generates a pair of keys for use with this class .
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private void error ( ErrorReason error ) { if ( options . rawSocket ) { // For raw sockets, send a final 0-length message to the application // so that it knows the peer has been disconnected. Msg terminator = new Msg ( ) ; processMsg . apply ( terminator ) ; } assert ( session != null ) ; socket . eventDisconnected ( ...
Function to handle network disconnections .
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private int write ( ByteBuffer outbuf ) { int nbytes ; try { nbytes = fd . write ( outbuf ) ; if ( nbytes == 0 ) { errno . set ( ZError . EAGAIN ) ; } } catch ( IOException e ) { errno . set ( ZError . ENOTCONN ) ; nbytes = - 1 ; } return nbytes ; }
of error or orderly shutdown by the other peer - 1 is returned .
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private int read ( ByteBuffer buf ) { int nbytes ; try { nbytes = fd . read ( buf ) ; if ( nbytes == - 1 ) { errno . set ( ZError . ENOTCONN ) ; } else if ( nbytes == 0 ) { if ( ! fd . isBlocking ( ) ) { // If not a single byte can be read from the socket in non-blocking mode // we'll get an error (this may happen duri...
Zero indicates the peer has closed the connection .
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public boolean sendAndDestroy ( Socket socket , int flags ) { boolean ret = send ( socket , flags ) ; if ( ret ) { destroy ( ) ; } return ret ; }
Sends frame to socket if it contains data . Use this method to send a frame and destroy the data after .
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public boolean hasSameData ( ZFrame other ) { if ( other == null ) { return false ; } if ( size ( ) == other . size ( ) ) { return Arrays . equals ( data , other . data ) ; } return false ; }
Returns true if both frames have byte - for byte identical data
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private byte [ ] recv ( Socket socket , int flags ) { Utils . checkArgument ( socket != null , "socket parameter must not be null" ) ; data = socket . recv ( flags ) ; more = socket . hasReceiveMore ( ) ; return data ; }
Internal method to call recv on the socket . Does not trap any ZMQExceptions but expects caling routine to handle them .
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public static ZFrame recvFrame ( Socket socket , int flags ) { ZFrame f = new ZFrame ( ) ; byte [ ] data = f . recv ( socket , flags ) ; if ( data == null ) { return null ; } return f ; }
Receive a new frame off the socket Returns newly - allocated frame or null if there was no input waiting or if the read was interrupted .
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public void terminate ( ) { slotSync . lock ( ) ; try { // Connect up any pending inproc connections, otherwise we will hang for ( Entry < PendingConnection , String > pending : pendingConnections . entries ( ) ) { SocketBase s = createSocket ( ZMQ . ZMQ_PAIR ) ; // create_socket might fail eg: out of memory/sockets li...
after the last one is closed .
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public Selector createSelector ( ) { selectorSync . lock ( ) ; try { Selector selector = Selector . open ( ) ; assert ( selector != null ) ; selectors . add ( selector ) ; return selector ; } catch ( IOException e ) { throw new ZError . IOException ( e ) ; } finally { selectorSync . unlock ( ) ; } }
Creates a Selector that will be closed when the context is destroyed .
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boolean registerEndpoint ( String addr , Endpoint endpoint ) { endpointsSync . lock ( ) ; Endpoint inserted = null ; try { inserted = endpoints . put ( addr , endpoint ) ; } finally { endpointsSync . unlock ( ) ; } if ( inserted != null ) { return false ; } return true ; }
Management of inproc endpoints .
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public void attachPipe ( Pipe pipe ) { assert ( ! isTerminating ( ) ) ; assert ( this . pipe == null ) ; assert ( pipe != null ) ; this . pipe = pipe ; this . pipe . setEventSink ( this ) ; }
To be used once only when creating the session .
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private void cleanPipes ( ) { assert ( pipe != null ) ; // Get rid of half-processed messages in the out pipe. Flush any // unflushed messages upstream. pipe . rollback ( ) ; pipe . flush ( ) ; // Remove any half-read message from the in pipe. while ( incompleteIn ) { Msg msg = pullMsg ( ) ; if ( msg == null ) { assert...
Call this function when engine disconnect to get rid of leftovers .
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public void destroy ( ) { for ( Socket socket : sockets ) { destroySocket ( socket ) ; } sockets . clear ( ) ; for ( Selector selector : selectors ) { context . close ( selector ) ; } selectors . clear ( ) ; // Only terminate context if we are on the main thread if ( isMain ( ) ) { context . term ( ) ; } }
Destructor . Call this to gracefully terminate context and close any managed 0MQ sockets
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public Socket createSocket ( SocketType type ) { // Create and register socket Socket socket = context . socket ( type ) ; socket . setRcvHWM ( this . rcvhwm ) ; socket . setSndHWM ( this . sndhwm ) ; sockets . add ( socket ) ; return socket ; }
Creates a new managed socket within this ZContext instance . Use this to get automatic management of the socket at shutdown
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public void destroySocket ( Socket s ) { if ( s == null ) { return ; } s . setLinger ( linger ) ; s . close ( ) ; this . sockets . remove ( s ) ; }
Destroys managed socket within this context and remove from sockets list
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Selector selector ( ) { Selector selector = context . selector ( ) ; selectors . add ( selector ) ; return selector ; }
Creates a selector . Resource will be released when context will be closed .
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@ Deprecated @ Draft public void closeSelector ( Selector selector ) { if ( selectors . remove ( selector ) ) { context . close ( selector ) ; } }
Closes a selector . This is a DRAFT method and may change without notice .
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public static ZContext shadow ( ZContext ctx ) { ZContext context = new ZContext ( ctx . context , false , ctx . ioThreads ) ; context . linger = ctx . linger ; context . sndhwm = ctx . sndhwm ; context . rcvhwm = ctx . rcvhwm ; context . pipehwm = ctx . pipehwm ; return context ; }
Creates new shadow context . Shares same underlying org . zeromq . Context instance but has own list of managed sockets io thread count etc .
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public Socket fork ( ZThread . IAttachedRunnable runnable , Object ... args ) { return ZThread . fork ( this , runnable , args ) ; }
Create an attached thread An attached thread gets a ctx and a PAIR pipe back to its parent . It must monitor its pipe and exit if the pipe becomes unreadable
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public static ByteBuffer putUInt64 ( ByteBuffer buf , long value ) { buf . put ( ( byte ) ( ( value >>> 56 ) & 0xff ) ) ; buf . put ( ( byte ) ( ( value >>> 48 ) & 0xff ) ) ; buf . put ( ( byte ) ( ( value >>> 40 ) & 0xff ) ) ; buf . put ( ( byte ) ( ( value >>> 32 ) & 0xff ) ) ; buf . put ( ( byte ) ( ( value >>> 24 )...
8 bytes value
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public static Socket fork ( ZContext ctx , IAttachedRunnable runnable , Object ... args ) { Socket pipe = ctx . createSocket ( SocketType . PAIR ) ; if ( pipe != null ) { pipe . bind ( String . format ( "inproc://zctx-pipe-%d" , pipe . hashCode ( ) ) ) ; } else { return null ; } // Connect child pipe to our pipe ZConte...
pipe becomes unreadable . Returns pipe or null if there was an error .
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private void startConnecting ( ) { // Open the connecting socket. try { boolean rc = open ( ) ; // Connect may succeed in synchronous manner. if ( rc ) { handle = ioObject . addFd ( fd ) ; connectEvent ( ) ; } // Connection establishment may be delayed. Poll for its completion. else { handle = ioObject . addFd ( fd ) ;...
Internal function to start the actual connection establishment .
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private void addReconnectTimer ( ) { int rcIvl = getNewReconnectIvl ( ) ; ioObject . addTimer ( rcIvl , RECONNECT_TIMER_ID ) ; // resolve address again to take into account other addresses // besides the failing one (e.g. multiple dns entries). try { addr . resolve ( options . ipv6 ) ; } catch ( Exception ignored ) { /...
Internal function to add a reconnect timer
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private int getNewReconnectIvl ( ) { // The new interval is the current interval + random value. int interval = currentReconnectIvl + ( Utils . randomInt ( ) % options . reconnectIvl ) ; // Only change the current reconnect interval if the maximum reconnect // interval was set and if it's larger than the reconnect inte...
Returns the currently used interval
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private boolean open ( ) throws IOException { assert ( fd == null ) ; // Resolve the address if ( addr == null ) { throw new IOException ( "Null address" ) ; } addr . resolve ( options . ipv6 ) ; Address . IZAddress resolved = addr . resolved ( ) ; if ( resolved == null ) { throw new IOException ( "Address not resolved...
Returns false if async connect was launched .
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private SocketChannel connect ( ) { try { // Async connect has finished. Check whether an error occurred boolean finished = fd . finishConnect ( ) ; assert ( finished ) ; return fd ; } catch ( IOException e ) { return null ; } }
null if the connection was unsuccessful .
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protected void close ( ) { assert ( fd != null ) ; try { fd . close ( ) ; socket . eventClosed ( addr . toString ( ) , fd ) ; } catch ( IOException e ) { socket . eventCloseFailed ( addr . toString ( ) , ZError . exccode ( e ) ) ; } fd = null ; }
Close the connecting socket .
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@ Deprecated public boolean setInterval ( Timer timer , long interval ) { assert ( timer . parent == this ) ; return timer . setInterval ( interval ) ; }
Changes the interval of the timer . This method is slow canceling existing and adding a new timer yield better performance .
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public long timeout ( ) { final long now = now ( ) ; for ( Entry < Timer , Long > entry : entries ( ) ) { final Timer timer = entry . getKey ( ) ; final Long expiration = entry . getValue ( ) ; if ( timer . alive ) { // Live timer, lets return the timeout if ( expiration - now > 0 ) { return expiration - now ; } else {...
Returns the time in millisecond until the next timer .
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public int execute ( ) { int executed = 0 ; final long now = now ( ) ; for ( Entry < Timer , Long > entry : entries ( ) ) { final Timer timer = entry . getKey ( ) ; final Long expiration = entry . getValue ( ) ; // Dead timer, lets remove it and continue if ( ! timer . alive ) { // Remove it from the list of active tim...
Execute the timers .
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