Examples with ConcurrentAccessController org.apache.synapse.commons.throttle.core.ConcurrentAccessController used on opensource projects

Example 1 with ConcurrentAccessController

use of org.apache.synapse.commons.throttle.core.ConcurrentAccessController in project wso2-synapse by wso2.

the class ThrottleHandler method process.

/**
 * processing through the throttle
 * 1) concurrent throttling
 * 2) access rate based throttling - domain or ip
 *
 * @param throttle       The Throttle object - holds all configuration and state data
 *                       of the throttle
 * @param messageContext The MessageContext , that holds all data per message basis
 * @throws AxisFault         Throws when access must deny for caller
 * @throws ThrottleException    ThrottleException
 */
public void process(Throttle throttle, MessageContext messageContext) throws ThrottleException, AxisFault {
    String throttleId = throttle.getId();
    ConfigurationContext cc = messageContext.getConfigurationContext();
    // acquiring  cache manager.
    Cache<String, ConcurrentAccessController> cache;
    CacheManager cacheManager = Caching.getCacheManagerFactory().getCacheManager(THROTTLING_CACHE_MANAGER);
    if (cacheManager != null) {
        cache = cacheManager.getCache(THROTTLING_CACHE);
    } else {
        cache = Caching.getCacheManager().getCache(THROTTLING_CACHE);
    }
    if (log.isDebugEnabled()) {
        log.debug("created throttling cache : " + cache);
    }
    // Get the concurrent access controller
    ConcurrentAccessController cac;
    String key = null;
    key = ThrottleConstants.THROTTLE_PROPERTY_PREFIX + throttleId + ThrottleConstants.CAC_SUFFIX;
    cac = cache.get(key);
    // check for concurrent access
    boolean canAccess = doConcurrentThrottling(cac, messageContext);
    if (canAccess) {
        if (messageContext.getFLOW() == MessageContext.IN_FLOW) {
            // gets the remote caller domain name
            String domain = null;
            HttpServletRequest request = (HttpServletRequest) messageContext.getPropertyNonReplicable(HTTPConstants.MC_HTTP_SERVLETREQUEST);
            if (request != null) {
                domain = request.getRemoteHost();
            }
            // Domain name based throttling
            // check whether a configuration has been defined for this domain name or not
            String callerId = null;
            if (domain != null) {
                // loads the ThrottleContext
                ThrottleContext throttleCtxt = throttle.getThrottleContext(ThrottleConstants.DOMAIN_BASED_THROTTLE_KEY);
                if (throttleCtxt != null) {
                    // Loads the ThrottleConfiguration
                    ThrottleConfiguration throttleConfig = throttleCtxt.getThrottleConfiguration();
                    if (throttleConfig != null) {
                        // check for configuration for this caller
                        callerId = throttleConfig.getConfigurationKeyOfCaller(domain);
                        if (callerId != null) {
                            // If this is a clustered env.
                            throttleCtxt.setThrottleId(throttleId);
                            AccessInformation infor = accessRateController.canAccess(throttleCtxt, callerId, ThrottleConstants.DOMAIN_BASE);
                            StatCollector.collect(infor, domain, ThrottleConstants.DOMAIN_BASE);
                            // check for the permission for access
                            if (!infor.isAccessAllowed()) {
                                // if the access has denied by rate based throttling
                                if (cac != null) {
                                    cac.incrementAndGet();
                                    cache.put(key, cac);
                                    if (debugOn) {
                                        log.debug("Added the state of ConcurrentAccessController " + "to cache with key : " + key);
                                    }
                                }
                                throw new AxisFault(" Access deny for a " + "caller with Domain " + domain + " " + " : Reason : " + infor.getFaultReason());
                            }
                        } else {
                            if (debugOn) {
                                log.debug("Could not find the Throttle Context for domain-Based " + "Throttling for domain name " + domain + " Throttling for this " + "domain name may not be configured from policy");
                            }
                        }
                    }
                }
            } else {
                if (debugOn) {
                    log.debug("Could not find the domain of the caller - IP-based throttling may occur");
                }
            }
            if (callerId == null) {
                String ip = (String) messageContext.getProperty(MessageContext.REMOTE_ADDR);
                if (ip != null) {
                    // loads IP based throttle context
                    ThrottleContext context = throttle.getThrottleContext(ThrottleConstants.IP_BASED_THROTTLE_KEY);
                    if (context != null) {
                        // Loads the ThrottleConfiguration
                        ThrottleConfiguration config = context.getThrottleConfiguration();
                        if (config != null) {
                            // check for configuration for this ip
                            callerId = config.getConfigurationKeyOfCaller(ip);
                            if (callerId != null) {
                                context.setThrottleId(throttleId);
                                AccessInformation infor = accessRateController.canAccess(context, callerId, ThrottleConstants.IP_BASE);
                                // check for the permission for access
                                StatCollector.collect(infor, ip, ThrottleConstants.IP_BASE);
                                if (!infor.isAccessAllowed()) {
                                    // if the access has denied by rate based throttling
                                    if (cac != null) {
                                        cac.incrementAndGet();
                                        // set back if this is a clustered env
                                        cache.put(key, cac);
                                        if (debugOn) {
                                            log.debug("Added the state of ConcurrentAccessController " + "to cache with key : " + key);
                                        }
                                    }
                                    throw new AxisFault(" Access deny for a " + "caller with IP " + ip + " " + " : Reason : " + infor.getFaultReason());
                                }
                            }
                        }
                    } else {
                        if (debugOn) {
                            log.debug("Could not find the throttle Context for IP-Based throttling");
                        }
                    }
                } else {
                    if (debugOn) {
                        log.debug("Could not find the IP address of the caller " + "- throttling will not occur");
                    }
                }
            }
        }
        // just replicate the current state of ConcurrentAccessController
        if (cac != null) {
            cache.put(key, cac);
            if (debugOn) {
                log.debug("Added the state of ConcurrentAccessController " + "to cache with key : " + key);
            }
        }
        // finally engage rolebased access throttling if available
        doRoleBasedAccessThrottling(throttle, messageContext);
    } else {
        // replicate the current state of ConcurrentAccessController
        if (cac != null) {
            cache.put(key, cac);
            if (debugOn) {
                log.debug("Added the state of ConcurrentAccessController " + "to cache with key : " + key);
            }
        }
        throw new AxisFault("Access has currently been denied since " + " maximum concurrent access have exceeded");
    }
}

Example 2 with ConcurrentAccessController

use of org.apache.synapse.commons.throttle.core.ConcurrentAccessController in project wso2-synapse by wso2.

the class ThrottleHandler method doRoleBasedAccessThrottling.

/**
 * Helper method for handling role based Access throttling
 *
 * @param messageContext             MessageContext - message level states
 * @return true if access is allowed through concurrent throttling ,o.w false
 */
private boolean doRoleBasedAccessThrottling(Throttle throttle, MessageContext messageContext) throws AxisFault, ThrottleException {
    boolean canAccess = true;
    if (throttle.getThrottleContext(ThrottleConstants.ROLE_BASED_THROTTLE_KEY) == null) {
        // if no role base throttle config return immediately
        return canAccess;
    }
    ConfigurationContext cc = messageContext.getConfigurationContext();
    String throttleId = throttle.getId();
    // acquiring  cache manager.
    Cache<String, ConcurrentAccessController> cache;
    CacheManager cacheManager = Caching.getCacheManagerFactory().getCacheManager(THROTTLING_CACHE_MANAGER);
    if (cacheManager != null) {
        cache = cacheManager.getCache(THROTTLING_CACHE);
    } else {
        cache = Caching.getCacheManager().getCache(THROTTLING_CACHE);
    }
    if (log.isDebugEnabled()) {
        log.debug("created throttling cache : " + cache);
    }
    String key = null;
    ConcurrentAccessController cac = null;
    key = ThrottleConstants.THROTTLE_PROPERTY_PREFIX + throttleId + ThrottleConstants.CAC_SUFFIX;
    cac = cache.get(key);
    if (messageContext.getFLOW() == MessageContext.IN_FLOW) {
        // gets the remote caller role name
        String consumerKey = null;
        boolean isAuthenticated = false;
        String roleID = null;
        HttpServletRequest request = (HttpServletRequest) messageContext.getPropertyNonReplicable(HTTPConstants.MC_HTTP_SERVLETREQUEST);
        if (request != null) {
            String oAuthHeader = request.getHeader("OAuth");
            // consumerKey = Utils.extractCustomerKeyFromAuthHeader(oAuthHeader);
            // roleID = Utils.extractCustomerKeyFromAuthHeader(oAuthHeader);
            DummyAuthenticator authFuture = new DummyAuthenticator(oAuthHeader);
            consumerKey = authFuture.getAPIKey();
            new DummyHandler().authenticateUser(authFuture);
            roleID = (String) authFuture.getAuthorizedRoles().get(0);
            isAuthenticated = authFuture.isAuthenticated();
        }
        if (!isAuthenticated) {
            throw new AxisFault(" Access deny for a " + "caller with consumer Key: " + consumerKey + " " + " : Reason : Authentication failure");
        }
        // Domain name based throttling
        // check whether a configuration has been defined for this role name or not
        String consumerRoleID = null;
        if (consumerKey != null && isAuthenticated) {
            // loads the ThrottleContext
            ThrottleContext context = throttle.getThrottleContext(ThrottleConstants.ROLE_BASED_THROTTLE_KEY);
            if (context != null) {
                // Loads the ThrottleConfiguration
                ThrottleConfiguration config = context.getThrottleConfiguration();
                if (config != null) {
                    // check for configuration for this caller
                    consumerRoleID = config.getConfigurationKeyOfCaller(roleID);
                    if (consumerRoleID != null) {
                        context.setThrottleId(throttleId);
                        AccessInformation infor = roleBasedAccessController.canAccess(context, consumerKey, consumerRoleID);
                        StatCollector.collect(infor, consumerKey, ThrottleConstants.ROLE_BASE);
                        // check for the permission for access
                        if (!infor.isAccessAllowed()) {
                            // if the access has denied by rate based throttling
                            if (cac != null) {
                                cac.incrementAndGet();
                                cache.put(key, cac);
                                if (debugOn) {
                                    log.debug("Added the state of ConcurrentAccessController " + "to cache with key : " + key);
                                }
                            }
                            throw new AxisFault(" Access deny for a " + "caller with Domain " + consumerKey + " " + " : Reason : " + infor.getFaultReason());
                        }
                    } else {
                        if (debugOn) {
                            log.debug("Could not find the Throttle Context for role-Based " + "Throttling for role name " + consumerKey + " Throttling for this " + "role name may not be configured from policy");
                        }
                    }
                }
            }
        } else {
            if (debugOn) {
                log.debug("Could not find the role of the caller - role based throttling NOT applied");
            }
        }
    }
    return canAccess;
}

Example 3 with ConcurrentAccessController

use of org.apache.synapse.commons.throttle.core.ConcurrentAccessController in project wso2-synapse by wso2.

the class ThrottleEnguageUtils method enguage.

public static void enguage(AxisDescription axisDescription, ConfigurationContext configctx, Throttle defaultThrottle) throws AxisFault {
    String currentServiceName;
    if (axisDescription instanceof AxisService) {
        Throttle throttle = null;
        AxisService currentService = ((AxisService) axisDescription);
        PolicySubject policySubject = currentService.getPolicySubject();
        if (policySubject != null) {
            try {
                List policies = new ArrayList(policySubject.getAttachedPolicyComponents());
                Policy currentPolicy = PolicyUtil.getMergedPolicy(policies, currentService);
                if (currentPolicy != null) {
                    throttle = ThrottleFactory.createServiceThrottle(currentPolicy);
                    if (throttle == null) {
                        // this is for the scenario when throttle policy is empty rather than
                        // null (eg: removing the throttle policy via policy editor)
                        throttle = defaultThrottle;
                    }
                // todo - done by isuru, recheck
                } else {
                    AxisConfiguration axisConfig = configctx.getAxisConfiguration();
                    AxisModule throttleModule = axisConfig.getModule(ThrottleConstants.THROTTLE_MODULE_NAME);
                    policySubject = throttleModule.getPolicySubject();
                    if (policySubject != null) {
                        currentPolicy = ThrottleEnguageUtils.getThrottlePolicy(policySubject.getAttachedPolicyComponents());
                        if (currentPolicy != null) {
                            throttle = ThrottleFactory.createModuleThrottle(currentPolicy);
                        }
                    }
                // todo - done by isuru
                }
            } catch (ThrottleException e) {
                log.error("Error was occurred when engaging throttle module for" + " the service :" + currentService.getName() + e.getMessage());
                log.info("Throttling will occur using default module policy");
                throttle = defaultThrottle;
            }
            if (throttle != null) {
                Map throttles = (Map) configctx.getPropertyNonReplicable(ThrottleConstants.THROTTLES_MAP);
                if (throttles == null) {
                    throttles = new HashMap();
                    configctx.setNonReplicableProperty(ThrottleConstants.THROTTLES_MAP, throttles);
                }
                String serviceName = currentService.getName();
                throttle.setId(serviceName);
                throttles.put(serviceName, throttle);
                ConcurrentAccessController cac = throttle.getConcurrentAccessController();
                if (cac != null) {
                    String cacKey = ThrottleConstants.THROTTLE_PROPERTY_PREFIX + serviceName + ThrottleConstants.CAC_SUFFIX;
                    configctx.setProperty(cacKey, cac);
                }
            }
        }
    } else if (axisDescription instanceof AxisOperation) {
        Throttle throttle = null;
        AxisOperation currentOperation = ((AxisOperation) axisDescription);
        AxisService axisService = (AxisService) currentOperation.getParent();
        if (axisService != null) {
            currentServiceName = axisService.getName();
            PolicySubject policySubject = currentOperation.getPolicySubject();
            if (policySubject != null) {
                try {
                    List policies = new ArrayList(policySubject.getAttachedPolicyComponents());
                    Policy currentPolicy = PolicyUtil.getMergedPolicy(policies, currentOperation);
                    if (currentPolicy != null) {
                        throttle = ThrottleFactory.createOperationThrottle(currentPolicy);
                    }
                } catch (ThrottleException e) {
                    log.error("Error was occurred when engaging throttle module " + "for operation : " + currentOperation.getName() + " in the service :" + currentServiceName + e.getMessage());
                    log.info("Throttling will occur using default module policy");
                }
                // if current throttle is null, use the default throttle
                if (throttle == null) {
                    throttle = defaultThrottle;
                }
                Map throttles = (Map) configctx.getPropertyNonReplicable(ThrottleConstants.THROTTLES_MAP);
                if (throttles == null) {
                    throttles = new HashMap();
                    configctx.setNonReplicableProperty(ThrottleConstants.THROTTLES_MAP, throttles);
                }
                QName opQName = currentOperation.getName();
                if (opQName != null) {
                    String opName = opQName.getLocalPart();
                    String key = currentServiceName + opName;
                    throttle.setId(key);
                    throttles.put(key, throttle);
                    ConcurrentAccessController cac = throttle.getConcurrentAccessController();
                    if (cac != null) {
                        String cacKey = ThrottleConstants.THROTTLE_PROPERTY_PREFIX + key + ThrottleConstants.CAC_SUFFIX;
                        configctx.setProperty(cacKey, cac);
                    }
                }
            }
        }
    }
}

Example 4 with ConcurrentAccessController

use of org.apache.synapse.commons.throttle.core.ConcurrentAccessController in project wso2-synapse by wso2.

the class SynapseCallbackReceiver method handleMessage.

/**
 * Handle the response or error (during a failed send) message received for an outgoing request
 *
 * @param messageID        Request message ID
 * @param response         the Axis2 MessageContext that has been received and has to be handled
 * @param synapseOutMsgCtx the corresponding (outgoing) Synapse MessageContext for the above
 *                         Axis2 MC, that holds Synapse specific information such as the error
 *                         handler stack and local properties etc.
 * @throws AxisFault       if the message cannot be processed
 */
private void handleMessage(String messageID, MessageContext response, org.apache.synapse.MessageContext synapseOutMsgCtx, AsyncCallback callback) throws AxisFault {
    // apply the tenant information to the out message context
    TenantInfoConfigurator configurator = synapseOutMsgCtx.getEnvironment().getTenantInfoConfigurator();
    if (configurator != null) {
        configurator.applyTenantInfo(synapseOutMsgCtx);
    }
    Boolean isConcurrencyThrottleEnabled = (Boolean) synapseOutMsgCtx.getProperty(SynapseConstants.SYNAPSE_CONCURRENCY_THROTTLE);
    if (isConcurrencyThrottleEnabled != null && isConcurrencyThrottleEnabled) {
        ConcurrentAccessController concurrentAccessController = (ConcurrentAccessController) synapseOutMsgCtx.getProperty(SynapseConstants.SYNAPSE_CONCURRENT_ACCESS_CONTROLLER);
        int available = concurrentAccessController.incrementAndGet();
        int concurrentLimit = concurrentAccessController.getLimit();
        if (log.isDebugEnabled()) {
            log.debug("Concurrency Throttle : Connection returned" + " :: " + available + " of available of " + concurrentLimit + " connections");
        }
        ConcurrentAccessReplicator concurrentAccessReplicator = (ConcurrentAccessReplicator) synapseOutMsgCtx.getProperty(SynapseConstants.SYNAPSE_CONCURRENT_ACCESS_REPLICATOR);
        String throttleKey = (String) synapseOutMsgCtx.getProperty(SynapseConstants.SYNAPSE_CONCURRENCY_THROTTLE_KEY);
        if (concurrentAccessReplicator != null) {
            concurrentAccessReplicator.replicate(throttleKey, true);
        }
    }
    Object o = response.getProperty(SynapseConstants.SENDING_FAULT);
    if (o != null && Boolean.TRUE.equals(o)) {
        // This path hits with a fault. Sequence mediator threads should not remove faultSequence.
        // SynapseCallbackReceiver thread should handle the faultStack.
        Pipe pipe = (Pipe) ((Axis2MessageContext) synapseOutMsgCtx).getAxis2MessageContext().getProperty(PassThroughConstants.PASS_THROUGH_PIPE);
        if (pipe != null && pipe.isSerializationComplete()) {
            NHttpServerConnection conn = (NHttpServerConnection) ((Axis2MessageContext) synapseOutMsgCtx).getAxis2MessageContext().getProperty("pass-through.Source-Connection");
            SourceConfiguration sourceConfiguration = (SourceConfiguration) ((Axis2MessageContext) synapseOutMsgCtx).getAxis2MessageContext().getProperty("PASS_THROUGH_SOURCE_CONFIGURATION");
            Pipe newPipe = new Pipe(conn, sourceConfiguration.getBufferFactory().getBuffer(), "source", sourceConfiguration);
            ((Axis2MessageContext) synapseOutMsgCtx).getAxis2MessageContext().setProperty(PassThroughConstants.PASS_THROUGH_PIPE, newPipe);
        }
        // there is a sending fault. propagate the fault to fault handlers.
        Stack faultStack = synapseOutMsgCtx.getFaultStack();
        if (faultStack != null && !faultStack.isEmpty()) {
            // fault envelope
            try {
                synapseOutMsgCtx.getEnvelope().build();
            } catch (Exception x) {
                synapseOutMsgCtx.setEnvelope(response.getEnvelope());
            }
            Exception e = (Exception) response.getProperty(SynapseConstants.ERROR_EXCEPTION);
            synapseOutMsgCtx.setProperty(SynapseConstants.SENDING_FAULT, Boolean.TRUE);
            synapseOutMsgCtx.setProperty(SynapseConstants.ERROR_CODE, response.getProperty(SynapseConstants.ERROR_CODE));
            synapseOutMsgCtx.setProperty(SynapseConstants.ERROR_MESSAGE, response.getProperty(SynapseConstants.ERROR_MESSAGE));
            synapseOutMsgCtx.setProperty(SynapseConstants.ERROR_DETAIL, response.getProperty(SynapseConstants.ERROR_DETAIL));
            synapseOutMsgCtx.setProperty(SynapseConstants.ERROR_EXCEPTION, e);
            if (synapseOutMsgCtx.getEnvironment().isContinuationEnabled()) {
                synapseOutMsgCtx.setContinuationEnabled(true);
            }
            if (log.isDebugEnabled()) {
                log.debug("[Failed Request Message ID : " + messageID + "]" + " [New to be Retried Request Message ID : " + synapseOutMsgCtx.getMessageID() + "]");
            }
            int errorCode = (Integer) response.getProperty(SynapseConstants.ERROR_CODE);
            // If a timeout has occured and the timeout action of the callback is to discard the message
            if (errorCode == SynapseConstants.NHTTP_CONNECTION_TIMEOUT && callback.getTimeOutAction() == SynapseConstants.DISCARD) {
                // Do not execute any fault sequences. Discard message
                if (log.isWarnEnabled()) {
                    log.warn("Synapse timed out for the request with Message ID : " + messageID + ". Ignoring fault handlers since the timeout action is DISCARD");
                }
                faultStack.removeAllElements();
            } else {
                ((FaultHandler) faultStack.pop()).handleFault(synapseOutMsgCtx, null);
            }
        }
    } else {
        // there can always be only one instance of an Endpoint in the faultStack of a message
        // if the send was successful, so remove it before we proceed any further
        Stack faultStack = synapseOutMsgCtx.getFaultStack();
        Endpoint successfulEndpoint = null;
        if (faultStack != null && !faultStack.isEmpty() && faultStack.peek() instanceof Endpoint) {
            successfulEndpoint = (Endpoint) faultStack.pop();
        }
        if (log.isDebugEnabled()) {
            log.debug("Synapse received an asynchronous response message");
            log.debug("Received To: " + (response.getTo() != null ? response.getTo().getAddress() : "null"));
            log.debug("SOAPAction: " + (response.getSoapAction() != null ? response.getSoapAction() : "null"));
            log.debug("WSA-Action: " + (response.getWSAAction() != null ? response.getWSAAction() : "null"));
            String[] cids = null;
            try {
                cids = response.getAttachmentMap().getAllContentIDs();
            } catch (Exception ex) {
                // partially read stream could lead to corrupted attachment map and hence this exception
                // corrupted attachment map leads to inconsistent runtime exceptions and behavior
                // discard the attachment map for the fault handler invocation
                // ensure the successful completion for fault handler flow
                response.setAttachmentMap(null);
                log.error("Synapse encountered an exception when reading attachments from bytes stream. " + "Hence Attachments map is dropped from the message context.", ex);
            }
            if (cids != null && cids.length > 0) {
                for (String cid : cids) {
                    log.debug("Attachment : " + cid);
                }
            }
            log.debug("Body : \n" + response.getEnvelope());
        }
        MessageContext axisOutMsgCtx = ((Axis2MessageContext) synapseOutMsgCtx).getAxis2MessageContext();
        // Processes 'Accept-Encoding'
        ResponseAcceptEncodingProcessor.process(response, axisOutMsgCtx);
        response.setServiceContext(null);
        response.setOperationContext(axisOutMsgCtx.getOperationContext());
        response.setAxisMessage(axisOutMsgCtx.getAxisOperation().getMessage(WSDLConstants.MESSAGE_LABEL_OUT_VALUE));
        // set properties on response
        response.setServerSide(true);
        response.setProperty(SynapseConstants.ISRESPONSE_PROPERTY, Boolean.TRUE);
        response.setProperty(MessageContext.TRANSPORT_OUT, axisOutMsgCtx.getProperty(MessageContext.TRANSPORT_OUT));
        response.setProperty(org.apache.axis2.Constants.OUT_TRANSPORT_INFO, axisOutMsgCtx.getProperty(org.apache.axis2.Constants.OUT_TRANSPORT_INFO));
        response.setTransportIn(axisOutMsgCtx.getTransportIn());
        response.setTransportOut(axisOutMsgCtx.getTransportOut());
        // response.setDoingREST(axisOutMsgCtx.isDoingREST()); This information already present, hence removing
        if (axisOutMsgCtx.isDoingMTOM() && (axisOutMsgCtx.getProperty(org.apache.axis2.Constants.Configuration.ENABLE_MTOM) == null || Boolean.getBoolean((String) axisOutMsgCtx.getProperty(org.apache.axis2.Constants.Configuration.ENABLE_MTOM)) == true)) {
            response.setDoingMTOM(true);
            response.setProperty(org.apache.axis2.Constants.Configuration.ENABLE_MTOM, org.apache.axis2.Constants.VALUE_TRUE);
        }
        if (axisOutMsgCtx.isDoingSwA()) {
            response.setDoingSwA(true);
            response.setProperty(org.apache.axis2.Constants.Configuration.ENABLE_SWA, org.apache.axis2.Constants.VALUE_TRUE);
        }
        // property state to original state.
        if (axisOutMsgCtx.getProperty(AddressingConstants.DISABLE_ADDRESSING_FOR_OUT_MESSAGES) != null) {
            response.setProperty(AddressingConstants.DISABLE_ADDRESSING_FOR_OUT_MESSAGES, axisOutMsgCtx.getProperty(AddressingConstants.DISABLE_ADDRESSING_FOR_OUT_MESSAGES));
        } else {
            response.removeProperty(AddressingConstants.DISABLE_ADDRESSING_FOR_OUT_MESSAGES);
        }
        Object messageType = axisOutMsgCtx.getProperty(org.apache.axis2.Constants.Configuration.MESSAGE_TYPE);
        if (!HTTPConstants.MEDIA_TYPE_X_WWW_FORM.equals(messageType)) {
            // copy the message type property that's used by the out message to the
            // response message
            response.setProperty(org.apache.axis2.Constants.Configuration.MESSAGE_TYPE, messageType);
        }
        if (axisOutMsgCtx.getMessageID() != null) {
            response.setRelationships(new RelatesTo[] { new RelatesTo(axisOutMsgCtx.getMessageID()) });
        }
        response.setReplyTo(axisOutMsgCtx.getReplyTo());
        response.setFaultTo(axisOutMsgCtx.getFaultTo());
        if (axisOutMsgCtx.isPropertyTrue(NhttpConstants.IGNORE_SC_ACCEPTED)) {
            response.setProperty(NhttpConstants.FORCE_SC_ACCEPTED, Constants.VALUE_TRUE);
        }
        // axis2 client options still contains properties such as policy files used in
        // outgoing request. Need to remove those.
        removeUnwantedClientOptions(response);
        // create the synapse message context for the response
        Axis2MessageContext synapseInMessageContext = new Axis2MessageContext(response, synapseOutMsgCtx.getConfiguration(), synapseOutMsgCtx.getEnvironment());
        synapseInMessageContext.setResponse(true);
        Object obj = synapseOutMsgCtx.getProperty(SynapseConstants.FORCE_ERROR_PROPERTY);
        String errorOnSOAPFault = (String) obj;
        if (Constants.VALUE_TRUE.equals(errorOnSOAPFault) && successfulEndpoint != null) {
            if (log.isDebugEnabled()) {
                log.debug("FORCE_ERROR_ON_SOAP_FAULT is true, checking for SOAPFault");
            }
            try {
                RelayUtils.buildMessage(((Axis2MessageContext) synapseInMessageContext).getAxis2MessageContext(), true);
            } catch (Exception e) {
            // handleException("Error while building message", e, synapseInMessageContext);
            }
            if ((synapseInMessageContext.getEnvelope() != null) && synapseInMessageContext.getEnvelope().hasFault()) {
                if (log.isDebugEnabled()) {
                    log.debug("SOAPFault found in response message, forcing endpoint " + successfulEndpoint.getName() + " to fail");
                }
                // setup new pipe configuration..if failure happens (this will be setup as the source writer and during the TargetContext
                // clean up operation the writer will be reset and pull to the buffer
                MessageContext axis2OUTMC = ((Axis2MessageContext) synapseOutMsgCtx).getAxis2MessageContext();
                NHttpServerConnection conn = (NHttpServerConnection) axis2OUTMC.getProperty("pass-through.Source-Connection");
                if (conn != null) {
                    SourceConfiguration sourceConfiguration = (SourceConfiguration) axis2OUTMC.getProperty("PASS_THROUGH_SOURCE_CONFIGURATION");
                    Pipe pipe = new Pipe(conn, sourceConfiguration.getBufferFactory().getBuffer(), "source", sourceConfiguration);
                    axis2OUTMC.setProperty(PassThroughConstants.PASS_THROUGH_PIPE, pipe);
                }
                synapseOutMsgCtx.setProperty(SynapseConstants.SENDING_FAULT, Boolean.TRUE);
                synapseOutMsgCtx.setProperty(SynapseConstants.ERROR_CODE, SynapseConstants.ENDPOINT_CUSTOM_ERROR);
                boolean failOver = false;
                if (successfulEndpoint instanceof AbstractEndpoint) {
                    Endpoint endpoint = ((AbstractEndpoint) successfulEndpoint).getParentEndpoint();
                    if (endpoint != null && (endpoint instanceof FailoverEndpoint)) {
                        failOver = true;
                    }
                }
                for (Object key : synapseOutMsgCtx.getPropertyKeySet()) {
                    synapseInMessageContext.setProperty((String) key, synapseOutMsgCtx.getProperty((String) key));
                }
                if (failOver) {
                    // we may required to handle same message for failover cases only other than that
                    // should treat based on the incoming message
                    ((FaultHandler) successfulEndpoint).handleFault(synapseOutMsgCtx, null);
                } else {
                    faultStack = synapseOutMsgCtx.getFaultStack();
                    if (faultStack != null) {
                        synapseInMessageContext.getFaultStack().addAll(faultStack);
                        ((FaultHandler) successfulEndpoint).handleFault(synapseInMessageContext, null);
                    }
                }
                return;
            } else {
                successfulEndpoint.onSuccess();
            }
        } else if (successfulEndpoint != null) {
            successfulEndpoint.onSuccess();
        }
        synapseInMessageContext.setTo(new EndpointReference(AddressingConstants.Final.WSA_ANONYMOUS_URL));
        synapseInMessageContext.setTracingState(synapseOutMsgCtx.getTracingState());
        synapseInMessageContext.setMessageFlowTracingState(synapseOutMsgCtx.getMessageFlowTracingState());
        for (Object key : synapseOutMsgCtx.getPropertyKeySet()) {
            synapseInMessageContext.setProperty((String) key, synapseOutMsgCtx.getProperty((String) key));
        }
        // Copy SequenceCallStack from original MC to the new MC
        Boolean isContinuationCall = (Boolean) synapseOutMsgCtx.getProperty(SynapseConstants.CONTINUATION_CALL);
        if (isContinuationCall != null && isContinuationCall) {
            // Set the message direction
            if (!synapseOutMsgCtx.isResponse()) {
                synapseInMessageContext.setResponse(false);
            }
            Stack<ContinuationState> seqContinuationStates = synapseOutMsgCtx.getContinuationStateStack();
            for (int i = 0; i < seqContinuationStates.size(); i++) {
                synapseInMessageContext.pushContinuationState(seqContinuationStates.get(i));
            }
        }
        // If this response is related to session affinity endpoints -Server initiated session
        Dispatcher dispatcher = (Dispatcher) synapseOutMsgCtx.getProperty(SynapseConstants.PROP_SAL_ENDPOINT_CURRENT_DISPATCHER);
        if (dispatcher != null && dispatcher.isServerInitiatedSession()) {
            dispatcher.updateSession(synapseInMessageContext);
        }
        // send the response message through the synapse mediation flow
        try {
            synapseOutMsgCtx.getEnvironment().injectMessage(synapseInMessageContext);
        } catch (Exception syne) {
            // introduced to handle runtime exceptions which are occurred inside Synapse handlers
            // partially read stream could lead to corrupted attachment map and hence this exception
            // corrupted attachment map leads to inconsistent runtime exceptions and behavior
            // discard the attachment map for the fault handler invocation
            // ensure the successful completion for fault handler flow
            // even we drop attachment map for both cases messages which have attachment /
            // messages which do not have attachments it would still not be any impact.
            // However setting attachment map to null for messages which do not have attachments is not required.
            // introduced due to the fact conflicts between Axiom exceptions for attachment/ non attachments cases
            // and performance impact that could cause of regular expression matching of exceptional stack traces.
            Axis2MessageContext axis2smc = (Axis2MessageContext) synapseInMessageContext;
            org.apache.axis2.context.MessageContext axis2MessageCtx = axis2smc.getAxis2MessageContext();
            // Set correct status code
            axis2MessageCtx.setProperty(PassThroughConstants.HTTP_SC, HttpStatus.SC_INTERNAL_SERVER_ERROR);
            axis2MessageCtx.setAttachmentMap(null);
            Stack stack = synapseInMessageContext.getFaultStack();
            if (stack != null && stack.isEmpty()) {
                registerFaultHandler(synapseInMessageContext);
            }
            if (stack != null && !stack.isEmpty()) {
                ((FaultHandler) stack.pop()).handleFault(synapseInMessageContext, syne);
            } else {
                log.error("Synapse encountered an exception, " + "No error handlers found - [Message Dropped]\n" + syne.getMessage());
            }
        }
    }
}

Example 5 with ConcurrentAccessController

use of org.apache.synapse.commons.throttle.core.ConcurrentAccessController in project wso2-synapse by wso2.

the class ConcurrencyThrottlingUtils method decrementConcurrencyThrottleAccessController.

/**
 * Decrement the internal counter for concurrency throttling, in case of normal response retrieval,
 * delayed response at synapse timeout, exceptional cases while mediation end up trigger fault.
 * In clustered environment, replicate the decremented value to other members.
 *
 * @param synCtx Synapse Message Context of which mediation occurs.
 */
public static void decrementConcurrencyThrottleAccessController(MessageContext synCtx) {
    Boolean isConcurrencyThrottleEnabled = (Boolean) synCtx.getProperty(SynapseConstants.SYNAPSE_CONCURRENCY_THROTTLE);
    if (isConcurrencyThrottleEnabled != null && isConcurrencyThrottleEnabled) {
        ConcurrentAccessController concurrentAccessController = (ConcurrentAccessController) synCtx.getProperty(SynapseConstants.SYNAPSE_CONCURRENT_ACCESS_CONTROLLER);
        int available = concurrentAccessController.incrementAndGet();
        int concurrentLimit = concurrentAccessController.getLimit();
        if (log.isDebugEnabled()) {
            log.debug("Concurrency Throttle : Connection returned" + " :: " + available + " of available of" + concurrentLimit + " connections");
        }
        ConcurrentAccessReplicator concurrentAccessReplicator = (ConcurrentAccessReplicator) synCtx.getProperty(SynapseConstants.SYNAPSE_CONCURRENT_ACCESS_REPLICATOR);
        String throttleKey = (String) synCtx.getProperty(SynapseConstants.SYNAPSE_CONCURRENCY_THROTTLE_KEY);
        if (concurrentAccessReplicator != null) {
            concurrentAccessReplicator.replicate(throttleKey, true);
        }
        // once decremented, clear the flag since we no longer required to decrement the value
        // concurrency throttle access controller
        synCtx.setProperty(SynapseConstants.SYNAPSE_CONCURRENCY_THROTTLE, false);
    }
}