Package org.apache.coyote
Class AbstractProcessor
java.lang.Object
org.apache.coyote.AbstractProcessorLight
org.apache.coyote.AbstractProcessor
- All Implemented Interfaces:
ActionHook
,Processor
- Direct Known Subclasses:
AjpProcessor
,Http11Processor
Provides functionality and attributes common to all supported protocols (currently HTTP and AJP) for processing a
single request/response.
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Field Summary
Modifier and TypeFieldDescriptionprotected Adapter
protected final AsyncStateMachine
protected final AbstractEndpoint<?,
?> protected char[]
protected final Request
protected final Response
protected SocketWrapperBase<?>
protected SSLSupport
protected final UserDataHelper
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Constructor Summary
ModifierConstructorDescriptionAbstractProcessor
(AbstractEndpoint<?, ?> endpoint) protected
AbstractProcessor
(AbstractEndpoint<?, ?> endpoint, Request coyoteRequest, Response coyoteResponse) -
Method Summary
Modifier and TypeMethodDescriptionprotected void
ack()
Deprecated.Unused.protected abstract void
ack
(ContinueResponseTiming continueResponseTiming) final void
action
(ActionCode actionCode, Object param) Send an action to the connector.protected abstract int
available
(boolean doRead) boolean
Check to see if the async generation (each cycle of async increments the generation of the AsyncStateMachine) is the same as the generation when the most recent async timeout was triggered.protected abstract void
dispatch
(SocketEvent status) Process an in-progress request that is not longer in standard HTTP mode.protected abstract AbstractEndpoint.Handler.SocketState
Perform any necessary clean-up processing if the dispatch resulted in the completion of processing for the current request.protected void
Perform any necessary processing for a non-blocking read before dispatching to the adapter.protected void
doHttpUpgrade
(UpgradeToken upgradeToken) Process an HTTP upgrade.protected void
Process a push.protected void
protected abstract void
protected abstract void
flush()
protected abstract boolean
Flush any pending writes.Get the associated adapter.long
protected Object
Protocols that support multiplexing (e.g.protected ErrorState
protected Executor
Allows retrieving additional input during the upgrade process.protected boolean
Processors that populate request attributes directly (e.g.protected final SocketWrapperBase<?>
protected Object
Protocols that support multiplexing (e.g.Generate an upgrade token.boolean
isAsync()
protected boolean
Protocols that support push should override this method and returntrue
.protected boolean
protected abstract boolean
protected abstract boolean
boolean
Processors that implement HTTP upgrade must override this method.protected final void
logAccess
(SocketWrapperBase<?> socketWrapper) Add an entry to the access log for a failed connection attempt.protected void
parseHost
(MessageBytes valueMB) protected void
Called when a host header is not present in the request (e.g.protected void
Called when a host header is not present or is empty in the request (e.g.protected void
Populate the remote host request attribute.protected void
Populate the TLS related request attributes from theSSLSupport
instance associated with this processor.protected abstract void
protected void
processSocketEvent
(SocketEvent event, boolean dispatch) void
recycle()
Recycle the processor, ready for the next request which may be on the same connection or a different connection.protected abstract void
void
setAdapter
(Adapter adapter) Set the associated adapter.void
setAsyncTimeout
(long timeout) protected void
setErrorState
(ErrorState errorState, Throwable t) Update the current error state to the new error state if the new error state is more severe than the current error state.protected abstract void
setRequestBody
(ByteChunk body) protected void
setSocketWrapper
(SocketWrapperBase<?> socketWrapper) Set the socket wrapper being used.final void
setSslSupport
(SSLSupport sslSupport) Set the SSL information for this HTTP connection.protected abstract void
protected void
Processors that can perform a TLS re-handshake (e.g.void
timeoutAsync
(long now) Check this processor to see if the timeout has expired and process a timeout if that is that case.Methods inherited from class org.apache.coyote.AbstractProcessorLight
addDispatch, clearDispatches, getIteratorAndClearDispatches, getLog, process, service
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Field Details
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hostNameC
protected char[] hostNameC -
adapter
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asyncStateMachine
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endpoint
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request
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response
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socketWrapper
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sslSupport
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userDataHelper
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Constructor Details
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AbstractProcessor
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AbstractProcessor
protected AbstractProcessor(AbstractEndpoint<?, ?> endpoint, Request coyoteRequest, Response coyoteResponse)
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Method Details
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setErrorState
Update the current error state to the new error state if the new error state is more severe than the current error state.- Parameters:
errorState
- The error status detailst
- The error which occurred
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getErrorState
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getRequest
- Specified by:
getRequest
in interfaceProcessor
- Returns:
- The request associated with this processor.
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setAdapter
Set the associated adapter.- Parameters:
adapter
- the new adapter
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getAdapter
Get the associated adapter.- Returns:
- the associated adapter
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setSocketWrapper
Set the socket wrapper being used.- Parameters:
socketWrapper
- The socket wrapper
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getSocketWrapper
- Returns:
- the socket wrapper being used.
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setSslSupport
Description copied from interface:Processor
Set the SSL information for this HTTP connection.- Specified by:
setSslSupport
in interfaceProcessor
- Parameters:
sslSupport
- The SSL support object to use for this connection
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getExecutor
- Returns:
- the Executor used by the underlying endpoint.
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isAsync
public boolean isAsync() -
asyncPostProcess
- Specified by:
asyncPostProcess
in classAbstractProcessorLight
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dispatch
Description copied from class:AbstractProcessorLight
Process an in-progress request that is not longer in standard HTTP mode. Uses currently include Servlet 3.0 Async and HTTP upgrade connections. Further uses may be added in the future. These will typically start as HTTP requests.- Specified by:
dispatch
in classAbstractProcessorLight
- Parameters:
status
- The event to process- Returns:
- The state the caller should put the socket in when this method returns
- Throws:
IOException
- If an I/O error occurs during the processing of the request
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parseHost
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populateHost
protected void populateHost()Called when a host header is not present in the request (e.g. HTTP/1.0). It populates the server name with appropriate information. The source is expected to vary by protocol.The default implementation is a NO-OP.
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populatePort
protected void populatePort()Called when a host header is not present or is empty in the request (e.g. HTTP/1.0). It populates the server port with appropriate information. The source is expected to vary by protocol.The default implementation is a NO-OP.
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action
Description copied from interface:ActionHook
Send an action to the connector.- Specified by:
action
in interfaceActionHook
- Parameters:
actionCode
- Type of the actionparam
- Action parameter
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dispatchNonBlockingRead
protected void dispatchNonBlockingRead()Perform any necessary processing for a non-blocking read before dispatching to the adapter. -
timeoutAsync
public void timeoutAsync(long now) Check this processor to see if the timeout has expired and process a timeout if that is that case.Note: The name of this method originated with the Servlet 3.0 asynchronous processing but evolved over time to represent a timeout that is triggered independently of the socket read/write timeouts.
Sub-classes of this base class represent a single request/response pair. The timeout to be processed is, therefore, the Servlet asynchronous processing timeout.
- Specified by:
timeoutAsync
in interfaceProcessor
- Parameters:
now
- The time (as returned bySystem.currentTimeMillis()
to use as the current time to determine whether the timeout has expired. If negative, the timeout will always be treated as ifq it has expired.
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checkAsyncTimeoutGeneration
public boolean checkAsyncTimeoutGeneration()Description copied from interface:Processor
Check to see if the async generation (each cycle of async increments the generation of the AsyncStateMachine) is the same as the generation when the most recent async timeout was triggered. This is intended to be used to avoid unnecessary processing.- Specified by:
checkAsyncTimeoutGeneration
in interfaceProcessor
- Returns:
true
If the async generation has not changed since the async timeout was triggered
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setAsyncTimeout
public void setAsyncTimeout(long timeout) -
getAsyncTimeout
public long getAsyncTimeout() -
recycle
public void recycle()Description copied from interface:Processor
Recycle the processor, ready for the next request which may be on the same connection or a different connection. -
prepareResponse
- Throws:
IOException
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finishResponse
- Throws:
IOException
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ack
Deprecated.Unused. This will be removed in Tomcat 10 onwards. Useack(ContinueResponseTiming)
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ack
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flush
- Throws:
IOException
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available
protected abstract int available(boolean doRead) -
setRequestBody
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setSwallowResponse
protected abstract void setSwallowResponse() -
disableSwallowRequest
protected abstract void disableSwallowRequest() -
getPopulateRequestAttributesFromSocket
protected boolean getPopulateRequestAttributesFromSocket()Processors that populate request attributes directly (e.g. AJP) should over-ride this method and returnfalse
.- Returns:
true
if the SocketWrapper should be used to populate the request attributes, otherwisefalse
.
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populateRequestAttributeRemoteHost
protected void populateRequestAttributeRemoteHost()Populate the remote host request attribute. Processors (e.g. AJP) that populate this from an alternative source should override this method. -
populateSslRequestAttributes
protected void populateSslRequestAttributes()Populate the TLS related request attributes from theSSLSupport
instance associated with this processor. Protocols that populate TLS attributes from a different source (e.g. AJP) should override this method. -
sslReHandShake
Processors that can perform a TLS re-handshake (e.g. HTTP/1.1) should override this method and implement the re-handshake.- Throws:
IOException
- If authentication is required then there will be I/O with the client and this exception will be thrown if that goes wrong
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processSocketEvent
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isReadyForRead
protected boolean isReadyForRead() -
isRequestBodyFullyRead
protected abstract boolean isRequestBodyFullyRead() -
registerReadInterest
protected abstract void registerReadInterest() -
isReadyForWrite
protected abstract boolean isReadyForWrite() -
executeDispatches
protected void executeDispatches() -
getUpgradeToken
Generate an upgrade token. Processors that implement HTTP upgrade must override this method and provide the necessary token.- Specified by:
getUpgradeToken
in interfaceProcessor
- Returns:
- An upgrade token encapsulating the information required to process the upgrade request
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doHttpUpgrade
Process an HTTP upgrade. Processors that support HTTP upgrade should override this method and process the provided token.- Parameters:
upgradeToken
- Contains all the information necessary for the Processor to process the upgrade- Throws:
UnsupportedOperationException
- if the protocol does not support HTTP upgrade
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getLeftoverInput
Allows retrieving additional input during the upgrade process. Processors that implement HTTP upgrade must override this method.- Specified by:
getLeftoverInput
in interfaceProcessor
- Returns:
- leftover bytes
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isUpgrade
public boolean isUpgrade()Processors that implement HTTP upgrade must override this method. -
isPushSupported
protected boolean isPushSupported()Protocols that support push should override this method and returntrue
.- Returns:
true
if push is supported by this processor, otherwisefalse
.
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doPush
Process a push. Processors that support push should override this method and process the provided token.- Parameters:
pushTarget
- Contains all the information necessary for the Processor to process the push request- Throws:
UnsupportedOperationException
- if the protocol does not support push
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getConnectionID
Protocols that support multiplexing (e.g. HTTP/2) should override this method and return the appropriate ID.- Returns:
- The stream ID associated with this request or
null
if a multiplexing protocol is not being used
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getStreamID
Protocols that support multiplexing (e.g. HTTP/2) should override this method and return the appropriate ID.- Returns:
- The stream ID associated with this request or
null
if a multiplexing protocol is not being used
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flushBufferedWrite
Flush any pending writes. Used during non-blocking writes to flush any remaining data from a previous incomplete write.- Returns:
true
if data remains to be flushed at the end of method- Throws:
IOException
- If an I/O error occurs while attempting to flush the data
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dispatchEndRequest
Perform any necessary clean-up processing if the dispatch resulted in the completion of processing for the current request.- Returns:
- The state to return for the socket once the clean-up for the current request has completed
- Throws:
IOException
- If an I/O error occurs while attempting to end the request
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logAccess
Description copied from class:AbstractProcessorLight
Add an entry to the access log for a failed connection attempt.- Overrides:
logAccess
in classAbstractProcessorLight
- Parameters:
socketWrapper
- The connection to process- Throws:
IOException
- If an I/O error occurs during the processing of the request
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