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package org.apache.catalina.core;
import org.apache.catalina.*;
import org.apache.catalina.Request;
import org.apache.catalina.Response;
import org.apache.catalina.connector.*;
import org.apache.catalina.util.LifecycleSupport;
import org.apache.catalina.valves.ValveBase;
import org.glassfish.logging.annotation.LogMessageInfo;
import org.glassfish.web.valve.GlassFishValve;
import org.glassfish.web.valve.GlassFishValveAdapter;
import org.glassfish.web.valve.TomcatValveAdapter;
import javax.management.ObjectName;
import javax.servlet.ServletException;
import javax.servlet.http.HttpUpgradeHandler;
import java.io.IOException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.text.MessageFormat;
import java.util.ResourceBundle;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
/** CR 6411114 (Lifecycle implementation moved to ValveBase)
import org.apache.tomcat.util.modeler.Registry;
*/
/**
* Standard implementation of a processing <b>Pipeline</b> that will invoke
* a series of Valves that have been configured to be called in order. This
* implementation can be used for any type of Container.
*
* <b>IMPLEMENTATION WARNING</b> - This implementation assumes that no
* calls to <code>addValve()</code> or <code>removeValve</code> are allowed
* while a request is currently being processed. Otherwise, the mechanism
* by which per-thread state is maintained will need to be modified.
*
* @author Craig R. McClanahan
*/
public class StandardPipeline
implements Pipeline, Contained, Lifecycle {
private static final Logger log = StandardServer.log;
private static final ResourceBundle rb = log.getResourceBundle();
@LogMessageInfo(
message = "Pipeline has already been started",
level = "WARNING"
)
public static final String PIPLINE_STARTED = "AS-WEB-CORE-00200";
@LogMessageInfo(
message = "Pipeline has not been started",
level = "WARNING"
)
public static final String PIPLINE_NOT_STARTED = "AS-WEB-CORE-00201";
@LogMessageInfo(
message = "Exception occurred when stopping GlassFishValve in StandardPipeline.setBasic",
level = "SEVERE",
cause = "Could not terminate the active use of the public methods of this component",
action = "Verify if stop() is the last one called on a given instance of this component, " +
"and it should send STOP_EVENT to any registered listeners"
)
public static final String SET_BASIC_STOP_EXCEPTION = "AS-WEB-CORE-00202";
@LogMessageInfo(
message = "Exception occurred when starting GlassFishValve in StandardPipeline.setBasic",
level = "SEVERE",
cause = "Could not prepare for the beginning of active use of the public methods of this component",
action = "Verify if start() is called before any of the public " +
"methods of this component are utilized, and it should " +
"send START_EVENT to any registered listeners"
)
public static final String SET_BASIC_START_EXCEPTION = "AS-WEB-CORE-00203";
@LogMessageInfo(
message = "Exception occurred when starting GlassFishValve in StandardPipline.addValve",
level = "SEVERE",
cause = "Specific valve could not be associated with current container",
action = "Verify the availability of current valve"
)
public static final String ADD_VALVE_EXCEPTION = "AS-WEB-CORE-00204";
@LogMessageInfo(
message = "Unable to add valve {0}",
level = "SEVERE",
cause = "Could not add tomcat-style valve",
action = "Verify if this is a GlassFish-style valve that was compiled against" +
" the old org.apache.catalina.Valve interface"
)
public static final String ADD_TOMCAT_STYLE_VALVE_EXCEPTION = "AS-WEB-CORE-00205";
@LogMessageInfo(
message = "No more Valves in the Pipeline processing this request",
level = "WARNING"
)
public static final String NO_VALVES_IN_PIPELINE_EXCEPTION = "AS-WEB-CORE-00206";
@LogMessageInfo(
message = "HttpUpgradeHandler handler cannot be null",
level = "WARNING"
)
public static final String PROTOCOL_HANDLER_REQUIRED_EXCEPTION = "AS-WEB-CORE-00207";
@LogMessageInfo(
message = "Exception occurred when stopping GlassFishValve in StandardPipeline.removeValve",
level = "SEVERE",
cause = "Could not terminate the active use of the public methods of this component",
action = "Verify if stop() is the last one called on a given instance of this component, " +
"and it should send STOP_EVENT to any registered listeners"
)
public static final String REMOVE_VALVE_EXCEPTION = "AS-WEB-CORE-00208";
@LogMessageInfo(
message = "StandardPipeline[{0}]: {1}",
level = "INFO"
)
public static final String STANDARD_PIPELINE_INFO = "AS-WEB-CORE-00209";
@LogMessageInfo(
message = "StandardPipeline[null]: {0}",
level = "INFO"
)
public static final String STANDARD_PIPELINE_NULL_INFO = "AS-WEB-CORE-00210";
// ----------------------------------------------------------- Constructors
/**
* Construct a new StandardPipeline instance with no associated Container.
*/
public StandardPipeline() {
this(null);
}
/**
* Construct a new StandardPipeline instance that is associated with the
* specified Container.
*
* @param container The container we should be associated with
*/
public StandardPipeline(Container container) {
super();
setContainer(container);
}
// ----------------------------------------------------- Instance Variables
/**
* The basic Valve (if any) associated with this Pipeline.
*/
protected GlassFishValve basic = null;
/**
* The Container with which this Pipeline is associated.
*/
protected Container container = null;
/**
* Descriptive information about this implementation.
*/
protected static final String info = "org.apache.catalina.core.StandardPipeline/1.0";
/**
* The lifecycle event support for this component.
*/
protected LifecycleSupport lifecycle = new LifecycleSupport(this);
/**
* Has this component been started yet?
*/
protected boolean started = false;
// START OF IASRI# 4647091
/*
* The per-thread execution state for processing through this pipeline.
* The actual value is a java.lang.Integer object containing the subscript
* into the <code>values</code> array, or a subscript equal to
* <code>values.length</code> if the basic Valve is currently being
* processed.
*/
// protected ThreadLocal state = new ThreadLocal();
// END OF IASRI# 4647091
/**
* The set of Valves (not including the Basic one, if any) associated with
* this Pipeline.
*/
protected GlassFishValve valves[] = new GlassFishValve[0];
// The first Tomcat-style valve in the pipeline, if any
private Valve firstTcValve;
// The last Tomcat-style valve (immediately preceding the basic valve)
// in the pipeline, if any
private Valve lastTcValve;
// --------------------------------------------------------- Public Methods
/**
* Return descriptive information about this implementation class.
*/
public String getInfo() {
return info;
}
// ------------------------------------------------------ Contained Methods
/**
* Return the Container with which this Pipeline is associated.
*/
public Container getContainer() {
return (this.container);
}
/**
* Set the Container with which this Pipeline is associated.
*
* @param container The new associated container
*/
public void setContainer(Container container) {
this.container = container;
}
// --------------------------------------------------- Lifecycle Methods
/**
* Add a lifecycle event listener to this component.
*
* @param listener The listener to add
*/
public void addLifecycleListener(LifecycleListener listener) {
lifecycle.addLifecycleListener(listener);
}
/**
* Gets the (possibly empty) list of lifecycle listeners
* associated with this Pipeline.
*/
public List<LifecycleListener> findLifecycleListeners() {
return lifecycle.findLifecycleListeners();
}
/**
* Remove a lifecycle event listener from this component.
*
* @param listener The listener to remove
*/
public void removeLifecycleListener(LifecycleListener listener) {
lifecycle.removeLifecycleListener(listener);
}
/**
* Prepare for active use of the public methods of this Component.
*
* @exception IllegalStateException if this component has already been
* started
* @exception LifecycleException if this component detects a fatal error
* that prevents it from being started
*/
public synchronized void start() throws LifecycleException {
// Validate and update our current component state
if (started)
throw new LifecycleException
(rb.getString(PIPLINE_STARTED));
// Notify our interested LifecycleListeners
lifecycle.fireLifecycleEvent(BEFORE_START_EVENT, null);
started = true;
// Start the Valves in our pipeline (including the basic), if any
for (int i = 0; i < valves.length; i++) {
if (valves[i] instanceof Lifecycle)
((Lifecycle) valves[i]).start();
/** CR 6411114 (MBean registration moved to ValveBase.start())
registerValve(valves[i]);
*/
}
if ((basic != null) && (basic instanceof Lifecycle))
((Lifecycle) basic).start();
/** CR 6411114 (MBean registration moved to ValveBase.start())
if( basic!=null )
registerValve(basic);
*/
// Notify our interested LifecycleListeners
lifecycle.fireLifecycleEvent(START_EVENT, null);
// Notify our interested LifecycleListeners
lifecycle.fireLifecycleEvent(AFTER_START_EVENT, null);
}
/**
* Gracefully shut down active use of the public methods of this Component.
*
* @exception IllegalStateException if this component has not been started
* @exception LifecycleException if this component detects a fatal error
* that needs to be reported
*/
public synchronized void stop() throws LifecycleException {
// Validate and update our current component state
if (!started)
throw new LifecycleException
(rb.getString(PIPLINE_NOT_STARTED));
started = false;
// Notify our interested LifecycleListeners
lifecycle.fireLifecycleEvent(BEFORE_STOP_EVENT, null);
// Notify our interested LifecycleListeners
lifecycle.fireLifecycleEvent(STOP_EVENT, null);
// Stop the Valves in our pipeline (including the basic), if any
if ((basic != null) && (basic instanceof Lifecycle))
((Lifecycle) basic).stop();
/** CR 6411114 (MBean deregistration moved to ValveBase.stop())
if( basic!=null ) {
unregisterValve(basic);
}
*/
for (int i = 0; i < valves.length; i++) {
if (valves[i] instanceof Lifecycle)
((Lifecycle) valves[i]).stop();
/** CR 6411114 (MBean deregistration moved to ValveBase.stop())
unregisterValve(valves[i]);
*/
}
// Notify our interested LifecycleListeners
lifecycle.fireLifecycleEvent(AFTER_STOP_EVENT, null);
}
// ------------------------------------------------------- Pipeline Methods
/**
* <p>Return the Valve instance that has been distinguished as the basic
* Valve for this Pipeline (if any).
*/
public GlassFishValve getBasic() {
return (this.basic);
}
/**
* <p>Set the Valve instance that has been distinguished as the basic
* Valve for this Pipeline (if any). Prior to setting the basic Valve,
* the Valve's <code>setContainer()</code> will be called, if it
* implements <code>Contained</code>, with the owning Container as an
* argument. The method may throw an <code>IllegalArgumentException</code>
* if this Valve chooses not to be associated with this Container, or
* <code>IllegalStateException</code> if it is already associated with
* a different Container.</p>
*
* @param valve Valve to be distinguished as the basic Valve
*/
public void setBasic(GlassFishValve valve) {
// Change components if necessary
GlassFishValve oldBasic = null;
synchronized (this) {
oldBasic = this.basic;
}
if (oldBasic == valve) {
return;
}
// Stop the old component if necessary
if (oldBasic != null) {
synchronized (this) {
if (started && (oldBasic instanceof Lifecycle)) {
try {
((Lifecycle) oldBasic).stop();
} catch (LifecycleException e) {
log.log(Level.SEVERE, SET_BASIC_STOP_EXCEPTION, e);
}
}
}
if (oldBasic instanceof Contained) {
try {
((Contained) oldBasic).setContainer(null);
} catch (Throwable t) {
// Ignore
}
}
}
// Start the new component if necessary
if (valve == null) {
return;
}
if (valve instanceof Contained) {
((Contained) valve).setContainer(this.container);
}
/** CR 6411114
if (valve instanceof Lifecycle) {
*/
// START CR 6411114
// Start the valve if the pipeline has already been started
if (started && (valve instanceof Lifecycle)) {
// END CR 6411114
try {
((Lifecycle) valve).start();
} catch (LifecycleException e) {
log.log(Level.SEVERE, SET_BASIC_START_EXCEPTION, e);
return;
}
}
synchronized (this) {
this.basic = valve;
}
}
/**
* <p>Add a new Valve to the end of the pipeline associated with this
* Container. Prior to adding the Valve, the Valve's
* <code>setContainer()</code> method will be called, if it implements
* <code>Contained</code>, with the owning Container as an argument.
* The method may throw an
* <code>IllegalArgumentException</code> if this Valve chooses not to
* be associated with this Container, or <code>IllegalStateException</code>
* if it is already associated with a different Container.</p>
*
* @param valve Valve to be added
*
* @exception IllegalArgumentException if this Container refused to
* accept the specified Valve
* @exception IllegalArgumentException if the specified Valve refuses to be
* associated with this Container
* @exception IllegalStateException if the specified Valve is already
* associated with a different Container
*/
public void addValve(GlassFishValve valve) {
if (firstTcValve != null) {
// Wrap GlassFish-style valve inside Tomcat-style valve
addValve(new TomcatValveAdapter(valve));
return;
}
// Validate that we can add this Valve
if (valve instanceof Contained)
((Contained) valve).setContainer(this.container);
// Start the new component if necessary
if (started) {
if (valve instanceof Lifecycle) {
try {
((Lifecycle) valve).start();
} catch (LifecycleException e) {
log.log(Level.SEVERE, ADD_VALVE_EXCEPTION, e);
}
}
/** CR 6411114 (MBean registration moved to ValveBase.start())
// Register the newly added valve
registerValve(valve);
*/
}
// Add this Valve to the set associated with this Pipeline
GlassFishValve results[] = new GlassFishValve[valves.length +1];
System.arraycopy(valves, 0, results, 0, valves.length);
results[valves.length] = valve;
valves = results;
}
/**
* Add Tomcat-style valve.
*/
public synchronized void addValve(Valve valve) {
/*
* Check if this is a GlassFish-style valve that was compiled
* against the old org.apache.catalina.Valve interface (from
* GlassFish releases prior to V3), which has since been renamed
* to org.glassfish.web.valve.GlassFishValve (in V3)
*/
if (isGlassFishValve(valve)) {
try {
addValve(new GlassFishValveAdapter(valve));
} catch (Exception e) {
String msg = MessageFormat.format(rb.getString(ADD_TOMCAT_STYLE_VALVE_EXCEPTION), valve);
log.log(Level.SEVERE, msg, e);
}
return;
}
if (valve instanceof Contained)
((Contained) valve).setContainer(this.container);
// Start the new Valve if necessary
if (started) {
if (valve instanceof Lifecycle) {
try {
((Lifecycle) valve).start();
} catch (LifecycleException e) {
log.log(Level.SEVERE,
ADD_VALVE_EXCEPTION, e);
}
}
}
if (firstTcValve == null) {
firstTcValve = lastTcValve = valve;
} else {
lastTcValve.setNext(valve);
lastTcValve = valve;
}
if (basic != null) {
valve.setNext((Valve) basic);
}
}
/**
* Return the set of Valves in the pipeline associated with this
* Container, including the basic Valve (if any). If there are no
* such Valves, a zero-length array is returned.
*/
public GlassFishValve[] getValves() {
if (basic == null) {
return (valves);
}
GlassFishValve results[] = new GlassFishValve[valves.length + 1];
System.arraycopy(valves, 0, results, 0, valves.length);
results[valves.length] = basic;
return (results);
}
/**
* @return true if this pipeline has any non basic valves, false
* otherwise
*/
public boolean hasNonBasicValves() {
return ((valves != null && valves.length > 0) || firstTcValve != null);
}
public ObjectName[] getValveObjectNames() {
ObjectName oname[]=new ObjectName[valves.length + 1];
for( int i=0; i<valves.length; i++ ) {
if( valves[i] instanceof ValveBase )
oname[i]=((ValveBase)valves[i]).getObjectName();
}
if( basic instanceof ValveBase )
oname[valves.length]=((ValveBase)basic).getObjectName();
return oname;
}
/**
* Cause the specified request and response to be processed by the Valves
* associated with this pipeline, until one of these valves causes the
* response to be created and returned. The implementation must ensure
* that multiple simultaneous requests (on different threads) can be
* processed through the same Pipeline without interfering with each
* other's control flow.
*
* @param request The servlet request we are processing
* @param response The servlet response we are creating
*
* @exception IOException if an input/output error occurs
* @exception ServletException if a servlet exception is thrown
*/
public void invoke(Request request, Response response)
throws IOException, ServletException {
doInvoke(request,response,false);
}
public void doChainInvoke(Request request, Response response)
throws IOException, ServletException {
doInvoke(request,response,true);
}
private void doInvoke(Request request, Response response, boolean chaining)
throws IOException, ServletException {
if ((valves.length > 0) || (basic != null)) {
// Set the status so that if there are no valves (other than the
// basic one), the basic valve's request processing logic will
// be invoked
int status = GlassFishValve.INVOKE_NEXT;
// Iterate over all the valves in the pipeline and invoke
// each valve's processing logic and then move onto to the
// next valve in the pipeline only if the previous valve indicated
// that the pipeline should proceed.
int i;
for (i = 0; i < valves.length; i++) {
Request req = request;
Response resp = response;
if (chaining) {
req = getRequest(request);
resp = getResponse(request, response);
}
status = valves[i].invoke(req, resp);
if (status != GlassFishValve.INVOKE_NEXT)
break;
}
// Save a reference to the valve[], to ensure that postInvoke()
// is invoked on the original valve[], in case a valve gets added
// or removed during the invocation of the basic valve (e.g.,
// in case access logging is enabled or disabled by some kind of
// admin servlet), in which case the indices used for postInvoke
// invocations below would be off
GlassFishValve[] savedValves = valves;
// Invoke the basic valve's request processing and post-request
// logic only if the pipeline was not aborted (i.e. no valve
// returned END_PIPELINE).
// In addition, the basic valve needs to be invoked by the
// pipeline only if no Tomcat-style valves have been added.
// Otherwise, it will be invoked by the last Tomcat-style valve
// directly.
if (status == GlassFishValve.INVOKE_NEXT) {
if (firstTcValve != null) {
firstTcValve.invoke(
(org.apache.catalina.connector.Request) request,
(org.apache.catalina.connector.Response) response);
} else if (basic != null) {
Request req = request;
Response resp = response;
if (chaining) {
req = getRequest(request);
resp = getResponse(request, response);
}
basic.invoke(req, resp);
basic.postInvoke(req, resp);
}
}
// Invoke the post-request processing logic only on those valves
// that returned a status of INVOKE_NEXT
for (int j = i - 1; j >= 0; j--) {
Request req = request;
Response resp = response;
if (chaining) {
req = getRequest(request);
resp = getResponse(request, response);
}
savedValves[j].postInvoke(req, resp);
}
savedValves = null;
} else {
throw new ServletException
(rb.getString(NO_VALVES_IN_PIPELINE_EXCEPTION));
}
// Calls the protocol handler's init method if the request is marked to be upgraded
if (request instanceof org.apache.catalina.connector.Request) {
org.apache.catalina.connector.Request req = (org.apache.catalina.connector.Request) request;
if (req.isUpgrade()) {
HttpUpgradeHandler handler = req.getHttpUpgradeHandler();
if (handler != null) {
WebConnectionImpl wc =
new WebConnectionImpl(
req.getInputStream(),
((org.apache.catalina.connector.Response)req.getResponse()).getOutputStream());
wc.setRequest(req);
if (response instanceof org.apache.catalina.connector.Response) {
wc.setResponse((org.apache.catalina.connector.Response) response);
}
handler.init(wc);
} else {
log.log(Level.SEVERE, PROTOCOL_HANDLER_REQUIRED_EXCEPTION);
}
}
}
}
private Request getRequest(Request request) {
Request r = (Request)
request.getNote(Globals.WRAPPED_REQUEST);
if (r == null) {
r = request;
}
return r;
}
private Response getResponse(Request request, Response response) {
Response r = (Response)
request.getNote(Globals.WRAPPED_RESPONSE);
if (r == null) {
r = response;
}
return r;
}
/**
* Remove the specified Valve from the pipeline associated with this
* Container, if it is found; otherwise, do nothing. If the Valve is
* found and removed, the Valve's <code>setContainer(null)</code> method
* will be called if it implements <code>Contained</code>.
*
* @param valve Valve to be removed
*/
public void removeValve(GlassFishValve valve) {
// Locate this Valve in our list
int j = -1;
for (int i = 0; i < valves.length; i++) {
if (valve == valves[i]) {
j = i;
break;
}
}
if (j < 0)
return;
// Remove this valve from our list
GlassFishValve results[] = new GlassFishValve[valves.length - 1];
int n = 0;
for (int i = 0; i < valves.length; i++) {
if (i == j)
continue;
results[n++] = valves[i];
}
valves = results;
try {
if (valve instanceof Contained)
((Contained) valve).setContainer(null);
} catch (Throwable t) {
;
}
// Stop this valve if necessary
if (started) {
if (valve instanceof ValveBase) {
if (((ValveBase)valve).isStarted()) {
try {
((Lifecycle) valve).stop();
} catch (LifecycleException e) {
log.log(Level.SEVERE, REMOVE_VALVE_EXCEPTION, e);
}
}
} else if (valve instanceof Lifecycle) {
try {
((Lifecycle) valve).stop();
} catch (LifecycleException e) {
log.log(Level.SEVERE, REMOVE_VALVE_EXCEPTION, e);
}
}
/** CR 6411114 (MBean deregistration moved to ValveBase.stop())
// Unregister the removed valve
unregisterValve(valve);
*/
}
}
// ------------------------------------------------------ Protected Methods
/**
* Log a message on the Logger associated with our Container (if any).
*
* @param message Message to be logged
*/
protected void log(String message) {
org.apache.catalina.Logger logger = null;
if (container != null) {
logger = container.getLogger();
String msg = MessageFormat.format(rb.getString(STANDARD_PIPELINE_INFO),
new Object[] {container.getName(), message});
if (logger != null) {
logger.log(msg);
} else {
if (log.isLoggable(Level.INFO)) {
log.log(Level.INFO, msg);
}
}
} else {
if (log.isLoggable(Level.INFO)) {
String msg = MessageFormat.format(rb.getString(STANDARD_PIPELINE_NULL_INFO), message);
log.log(Level.INFO, msg);
}
}
}
/**
* Logs the given message to the Logger associated with the Container
* (if any) of this StandardPipeline.
*
* @param message the message
* @param t the Throwable
*/
protected void log(String message, Throwable t) {
org.apache.catalina.Logger logger = null;
if (container != null) {
logger = container.getLogger();
String msg = MessageFormat.format(rb.getString(STANDARD_PIPELINE_INFO),
new Object[] {container.getName(), message});
if (logger != null) {
logger.log(msg, t, org.apache.catalina.Logger.WARNING);
} else {
log.log(Level.WARNING, msg, t);
}
} else {
String msg = MessageFormat.format(rb.getString(STANDARD_PIPELINE_NULL_INFO), message);
log.log(Level.WARNING, msg, t);// INFO set to WARNING
}
}
// ------------------------------------------------------ Private Methods
/*
* Checks if the give valve is a GlassFish-style valve that was compiled
* against the old org.apache.catalina.Valve interface (from
* GlassFish releases prior to V3), which has since been renamed
* to org.glassfish.web.valve.GlassFishValve (in V3).
*
* The check is done by checking that it is not an abstract method with
* return type int. Note that invoke method in the original Tomcat-based
* Valve interface is declared to be void.
*
* @param valve the valve to check
*
* @return true if the given valve is a GlassFish-style valve, false
* otherwise
*/
private boolean isGlassFishValve(Valve valve) {
try {
Method m = valve.getClass().getMethod(
"invoke",
org.apache.catalina.Request.class,
org.apache.catalina.Response.class);
return (m != null && int.class.equals(m.getReturnType())
&& (!Modifier.isAbstract(m.getModifiers())));
} catch (Exception e) {
return false;
}
}
}