Examples with Variable org.wso2.siddhi.query.api.expression.Variable used on opensource projects

Example 71 with Variable

use of org.wso2.siddhi.query.api.expression.Variable in project carbon-business-process by wso2.

the class RESTTask method execute.

@Override
public void execute(DelegateExecution execution) {
    if (method == null) {
        String error = "HTTP method for the REST task not found. Please specify the \"method\" form property.";
        throw new RESTClientException(error);
    }
    if (log.isDebugEnabled()) {
        if (serviceURL != null) {
            log.debug("Executing RESTInvokeTask " + method.getValue(execution).toString() + " - " + serviceURL.getValue(execution).toString());
        } else if (serviceRef != null) {
            log.debug("Executing RESTInvokeTask " + method.getValue(execution).toString() + " - " + serviceRef.getValue(execution).toString());
        }
    }
    RESTInvoker restInvoker = BPMNRestExtensionHolder.getInstance().getRestInvoker();
    RESTResponse response;
    String url = null;
    String bUsername = null;
    String bPassword = null;
    JsonNodeObject jsonHeaders = null;
    boolean contentAvailable = false;
    try {
        if (serviceURL != null) {
            url = serviceURL.getValue(execution).toString();
            if (basicAuthUsername != null && basicAuthPassword != null) {
                bUsername = basicAuthUsername.getValue(execution).toString();
                bPassword = basicAuthPassword.getValue(execution).toString();
            }
        } else if (serviceRef != null) {
            String resourcePath = serviceRef.getValue(execution).toString();
            String registryPath;
            int tenantIdInt = Integer.parseInt(execution.getTenantId());
            RealmService realmService = RegistryContext.getBaseInstance().getRealmService();
            String domain = realmService.getTenantManager().getDomain(tenantIdInt);
            Registry registry;
            Resource urlResource;
            try {
                PrivilegedCarbonContext.startTenantFlow();
                if (domain != null) {
                    PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantDomain(domain);
                    PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantId(tenantIdInt);
                } else {
                    PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantDomain(MultitenantConstants.SUPER_TENANT_DOMAIN_NAME);
                    PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantId(tenantIdInt);
                }
                if (resourcePath.startsWith(GOVERNANCE_REGISTRY_PREFIX)) {
                    registryPath = resourcePath.substring(GOVERNANCE_REGISTRY_PREFIX.length());
                    registry = BPMNExtensionsComponent.getRegistryService().getGovernanceSystemRegistry(tenantIdInt);
                } else if (resourcePath.startsWith(CONFIGURATION_REGISTRY_PREFIX)) {
                    registryPath = resourcePath.substring(CONFIGURATION_REGISTRY_PREFIX.length());
                    registry = BPMNExtensionsComponent.getRegistryService().getConfigSystemRegistry(tenantIdInt);
                } else {
                    String msg = "Registry type is not specified for service reference in " + getTaskDetails(execution) + ". serviceRef should begin with gov:/ or conf:/ to indicate the registry type.";
                    throw new RESTClientException(msg);
                }
                if (log.isDebugEnabled()) {
                    log.debug("Reading endpoint from registry location: " + registryPath + " for task " + getTaskDetails(execution));
                }
                urlResource = registry.get(registryPath);
            } finally {
                PrivilegedCarbonContext.endTenantFlow();
            }
            if (urlResource != null) {
                String uepContent = new String((byte[]) urlResource.getContent(), Charset.defaultCharset());
                UnifiedEndpointFactory uepFactory = new UnifiedEndpointFactory();
                OMElement uepElement = AXIOMUtil.stringToOM(uepContent);
                UnifiedEndpoint uep = uepFactory.createEndpoint(uepElement);
                url = uep.getAddress();
                bUsername = uep.getAuthorizationUserName();
                bPassword = uep.getAuthorizationPassword();
            } else {
                String errorMsg = "Endpoint resource " + registryPath + " is not found. Failed to execute REST invocation in task " + getTaskDetails(execution);
                throw new RESTClientException(errorMsg);
            }
        } else {
            String urlNotFoundErrorMsg = "Service URL is not provided for " + getTaskDetails(execution) + ". serviceURL or serviceRef must be provided.";
            throw new RESTClientException(urlNotFoundErrorMsg);
        }
        if (headers != null) {
            String headerContent = headers.getValue(execution).toString();
            jsonHeaders = JSONUtils.parse(headerContent);
        }
        if (POST_METHOD.equals(method.getValue(execution).toString().trim().toUpperCase())) {
            String inputContent = input.getValue(execution).toString();
            response = restInvoker.invokePOST(new URI(url), jsonHeaders, bUsername, bPassword, inputContent);
        } else if (GET_METHOD.equals(method.getValue(execution).toString().trim().toUpperCase())) {
            response = restInvoker.invokeGET(new URI(url), jsonHeaders, bUsername, bPassword);
        } else if (PUT_METHOD.equals(method.getValue(execution).toString().trim().toUpperCase())) {
            String inputContent = input.getValue(execution).toString();
            response = restInvoker.invokePUT(new URI(url), jsonHeaders, bUsername, bPassword, inputContent);
        } else if (DELETE_METHOD.equals(method.getValue(execution).toString().trim().toUpperCase())) {
            response = restInvoker.invokeDELETE(new URI(url), jsonHeaders, bUsername, bPassword);
        } else {
            String errorMsg = "Unsupported http method. The REST task only supports GET, POST, PUT and DELETE operations";
            throw new RESTClientException(errorMsg);
        }
        Object output = response.getContent();
        if (output != null) {
            contentAvailable = !response.getContent().equals("");
        }
        boolean contentTypeAvailable = false;
        if (response.getContentType() != null) {
            contentTypeAvailable = true;
        }
        if (contentAvailable && contentTypeAvailable && response.getContentType().contains(APPLICATION_JSON)) {
            output = JSONUtils.parse(String.valueOf(output));
        } else if (contentAvailable && contentTypeAvailable && response.getContentType().contains(APPLICATION_XML)) {
            output = Utils.parse(String.valueOf(output));
        } else {
            output = StringEscapeUtils.escapeXml(String.valueOf(output));
        }
        if (outputVariable != null) {
            String outVarName = outputVariable.getValue(execution).toString();
            execution.setVariable(outVarName, output);
        } else if (outputMappings != null) {
            String outMappings = outputMappings.getValue(execution).toString();
            outMappings = outMappings.trim();
            String[] mappings = outMappings.split(",");
            for (String mapping : mappings) {
                String[] mappingParts = mapping.split(":");
                String varName = mappingParts[0];
                String expression = mappingParts[1];
                Object value;
                if (output instanceof JsonNodeObject) {
                    value = ((JsonNodeObject) output).jsonPath(expression);
                } else {
                    value = ((XMLDocument) output).xPath(expression);
                }
                execution.setVariable(varName, value);
            }
        } else {
            String outputNotFoundErrorMsg = "An outputVariable or outputMappings is not provided. " + "Either an output variable or output mappings  must be provided to save " + "the response.";
            throw new RESTClientException(outputNotFoundErrorMsg);
        }
        if (responseHeaderVariable != null) {
            StringBuilder headerJsonStr = new StringBuilder();
            headerJsonStr.append("{");
            String prefix = "";
            for (Header header : response.getHeaders()) {
                headerJsonStr.append(prefix);
                String name = header.getName().replaceAll("\"", "");
                String value = header.getValue().replaceAll("\"", "");
                headerJsonStr.append("\"").append(name).append("\":\"").append(value).append("\"");
                prefix = ",";
            }
            headerJsonStr.append("}");
            JsonNodeObject headerJson = JSONUtils.parse(headerJsonStr.toString());
            execution.setVariable(responseHeaderVariable.getValue(execution).toString(), headerJson);
        }
        if (httpStatusVariable != null) {
            execution.setVariable(httpStatusVariable.getValue(execution).toString(), response.getHttpStatus());
        }
    } catch (RegistryException | XMLStreamException | URISyntaxException | IOException | SAXException | ParserConfigurationException e) {
        String errorMessage = "Failed to execute " + method.getValue(execution).toString() + " " + url + " within task " + getTaskDetails(execution);
        log.error(errorMessage, e);
        throw new RESTClientException(REST_INVOKE_ERROR, errorMessage);
    } catch (BPMNJsonException | BPMNXmlException e) {
        String errorMessage = "Failed to extract values for output mappings, the response content" + " doesn't support the expression" + method.getValue(execution).toString() + " " + url + " within task " + getTaskDetails(execution);
        log.error(errorMessage, e);
        throw new RESTClientException(REST_INVOKE_ERROR, errorMessage);
    } catch (UserStoreException e) {
        String errorMessage = "Failed to obtain tenant domain information";
        log.error(errorMessage, e);
        throw new RESTClientException(REST_INVOKE_ERROR, errorMessage);
    }
}

Example 72 with Variable

use of org.wso2.siddhi.query.api.expression.Variable in project carbon-business-process by wso2.

the class SOAPTask method execute.

@Override
public void execute(DelegateExecution execution) {
    String endpointURL;
    String payloadRequest;
    String version;
    String connection;
    String transferEncoding;
    String[] transportHeaderList;
    String action = "";
    String soapVersionURI = SOAP11Constants.SOAP_ENVELOPE_NAMESPACE_URI;
    List<Header> headerList = new ArrayList<Header>();
    try {
        if (serviceURL != null) {
            endpointURL = serviceURL.getValue(execution).toString();
        } else if (serviceRef != null) {
            String resourcePath = serviceRef.getValue(execution).toString();
            String registryPath;
            String tenantId = execution.getTenantId();
            Registry registry;
            if (resourcePath.startsWith(GOVERNANCE_REGISTRY_PREFIX)) {
                registryPath = resourcePath.substring(GOVERNANCE_REGISTRY_PREFIX.length());
                registry = BPMNExtensionsComponent.getRegistryService().getGovernanceSystemRegistry(Integer.parseInt(tenantId));
            } else if (resourcePath.startsWith(CONFIGURATION_REGISTRY_PREFIX)) {
                registryPath = resourcePath.substring(CONFIGURATION_REGISTRY_PREFIX.length());
                registry = BPMNExtensionsComponent.getRegistryService().getConfigSystemRegistry(Integer.parseInt(tenantId));
            } else {
                String msg = "Registry type is not specified for service reference in " + " serviceRef should begin with gov:/ or conf:/ to indicate the registry type.";
                throw new SOAPException(SOAP_INVOKE_ERROR_CODE, msg);
            }
            if (log.isDebugEnabled()) {
                log.debug("Reading endpoint from registry location: " + registryPath + " for task " + execution.getCurrentActivityName());
            }
            Resource urlResource = registry.get(registryPath);
            if (urlResource != null) {
                String uepContent = new String((byte[]) urlResource.getContent(), Charset.defaultCharset());
                UnifiedEndpointFactory uepFactory = new UnifiedEndpointFactory();
                OMElement uepElement = AXIOMUtil.stringToOM(uepContent);
                UnifiedEndpoint uep = uepFactory.createEndpoint(uepElement);
                endpointURL = uep.getAddress();
            } else {
                String errorMsg = "Endpoint resource " + registryPath + " is not found. Failed to execute REST invocation in task " + execution.getCurrentActivityName();
                throw new SOAPException(SOAP_INVOKE_ERROR_CODE, errorMsg);
            }
        } else {
            String urlNotFoundErrorMsg = "Service URL is not provided. serviceURL must be provided.";
            throw new SOAPException(SOAP_INVOKE_ERROR_CODE, urlNotFoundErrorMsg);
        }
        if (payload != null) {
            payloadRequest = payload.getValue(execution).toString();
        } else {
            String payloadNotFoundErrorMsg = "Payload request is not provided. Payload must be provided.";
            throw new SOAPException(SOAP_INVOKE_ERROR_CODE, payloadNotFoundErrorMsg);
        }
        if (soapVersion != null) {
            version = soapVersion.getValue(execution).toString();
            if (version.equalsIgnoreCase(SOAP12_VERSION)) {
                soapVersionURI = SOAP12Constants.SOAP_ENVELOPE_NAMESPACE_URI;
            } else if (version.equalsIgnoreCase(SOAP11_VERSION)) {
                soapVersionURI = SOAP11Constants.SOAP_ENVELOPE_NAMESPACE_URI;
            } else {
                String invalidVersionErrorMsg = "Invalid soap version string specified";
                throw new SOAPException(SOAP_INVOKE_ERROR_CODE, invalidVersionErrorMsg);
            }
        }
        // Adding the connection
        Header connectionHeader = new Header();
        if (httpConnection != null) {
            connection = httpConnection.getValue(execution).toString();
            if (connection != null && !connection.trim().equals("Keep-Alive")) {
                log.debug("Setting Keep-Alive header ");
                connectionHeader.setName("Connection");
                connectionHeader.setValue(connection);
                headerList.add(connectionHeader);
            }
        }
        // Adding the additional transport headers
        if (transportHeaders != null) {
            String headerContent = transportHeaders.getValue(execution).toString();
            if (headerContent != null) {
                transportHeaderList = headerContent.split(",");
                for (String transportHeader : transportHeaderList) {
                    String[] pair = transportHeader.split(":");
                    Header additionalHeader = new Header();
                    if (pair.length == 1) {
                        additionalHeader.setName(pair[0]);
                        additionalHeader.setValue("");
                        if (log.isDebugEnabled()) {
                            log.debug("Adding transport headers " + pair[0]);
                        }
                    } else {
                        additionalHeader.setName(pair[0]);
                        additionalHeader.setValue(pair[1]);
                        if (log.isDebugEnabled()) {
                            log.debug("Adding transport headers " + pair[0] + " " + pair[1]);
                        }
                    }
                    headerList.add(additionalHeader);
                }
            }
        }
        // Adding the soap action
        if (soapAction != null) {
            action = soapAction.getValue(execution).toString();
            if (log.isDebugEnabled()) {
                log.debug("Setting soap action " + soapAction);
            }
        }
        // Converting the payload to an OMElement
        OMElement payLoad = AXIOMUtil.stringToOM(payloadRequest);
        // Creating the Service client
        ServiceClient sender = new ServiceClient();
        OMElement response;
        // Creating options to set the headers
        Options options = new Options();
        options.setTo(new EndpointReference(endpointURL));
        options.setAction(action);
        options.setSoapVersionURI(soapVersionURI);
        options.setProperty(org.apache.axis2.transport.http.HTTPConstants.HTTP_HEADERS, headerList);
        // Adding the soap header block to the SOAP Header block when creating the SOAP Envelope
        if (headers != null) {
            String headerContent = headers.getValue(execution).toString();
            OMElement headerElement = AXIOMUtil.stringToOM(headerContent);
            sender.addHeader(headerElement);
            if (log.isDebugEnabled()) {
                log.debug("Adding soap header " + headerContent);
            }
        }
        // Adding the transfer encoding
        if (httpTransferEncoding != null) {
            transferEncoding = httpTransferEncoding.getValue(execution).toString();
            if (transferEncoding.equalsIgnoreCase("chunked")) {
                options.setProperty(HTTPConstants.CHUNKED, Boolean.TRUE);
                if (log.isDebugEnabled()) {
                    log.debug("Enabling transfer encoding chunked ");
                }
            } else {
                options.setProperty(HTTPConstants.CHUNKED, Boolean.FALSE);
                if (log.isDebugEnabled()) {
                    log.debug("Disabling transfer encoding chunked ");
                }
            }
        }
        sender.setOptions(options);
        // Invoking the endpoint
        response = sender.sendReceive(payLoad);
        // Getting the response as a string
        String responseStr = response.toStringWithConsume();
        if (outputVariable != null) {
            String outVarName = outputVariable.getValue(execution).toString();
            execution.setVariableLocal(outVarName, responseStr);
        } else {
            String outputNotFoundErrorMsg = "Output variable is not provided. " + "outputVariable must be provided to save " + "the response.";
            throw new SOAPException(SOAP_INVOKE_ERROR_CODE, outputNotFoundErrorMsg);
        }
    } catch (AxisFault axisFault) {
        log.error("Axis2 Fault", axisFault);
        throw new SOAPException(SOAP_INVOKE_ERROR_CODE, "Exception while getting response :" + axisFault.getMessage());
    } catch (XMLStreamException | RegistryException e) {
        log.error("Exception in processing", e);
        throw new SOAPException(SOAP_INVOKE_ERROR_CODE, "Exception in processing  :" + e.getMessage());
    }
}

Example 73 with Variable

use of org.wso2.siddhi.query.api.expression.Variable in project carbon-business-process by wso2.

the class BaseHistoricVariableInstanceService method addVariables.

protected void addVariables(HistoricVariableInstanceQuery variableInstanceQuery, List<QueryVariable> variables) {
    for (QueryVariable variable : variables) {
        if (variable.getVariableOperation() == null) {
            throw new ActivitiIllegalArgumentException("Variable operation is missing for variable: " + variable.getName());
        }
        if (variable.getValue() == null) {
            throw new ActivitiIllegalArgumentException("Variable value is missing for variable: " + variable.getName());
        }
        boolean nameLess = variable.getName() == null;
        Object actualValue = new RestResponseFactory().getVariableValue(variable);
        // A value-only query is only possible using equals-operator
        if (nameLess) {
            throw new ActivitiIllegalArgumentException("Value-only query (without a variable-name) is not supported");
        }
        switch(variable.getVariableOperation()) {
            case EQUALS:
                variableInstanceQuery.variableValueEquals(variable.getName(), actualValue);
                break;
            default:
                throw new ActivitiIllegalArgumentException("Unsupported variable query operation: " + variable.getVariableOperation());
        }
    }
}

Example 74 with Variable

use of org.wso2.siddhi.query.api.expression.Variable in project carbon-business-process by wso2.

the class BaseProcessInstanceService method addVariables.

protected void addVariables(ProcessInstanceQuery processInstanceQuery, List<QueryVariable> variables) {
    RestResponseFactory restResponseFactory = new RestResponseFactory();
    for (QueryVariable variable : variables) {
        if (variable.getVariableOperation() == null) {
            throw new ActivitiIllegalArgumentException("Variable operation is missing for variable: " + variable.getName());
        }
        if (variable.getValue() == null) {
            throw new ActivitiIllegalArgumentException("Variable value is missing for variable: " + variable.getName());
        }
        boolean nameLess = variable.getName() == null;
        Object actualValue = restResponseFactory.getVariableValue(variable);
        // A value-only query is only possible using equals-operator
        if (nameLess && variable.getVariableOperation() != QueryVariable.QueryVariableOperation.EQUALS) {
            throw new ActivitiIllegalArgumentException("Value-only query (without a variable-name) is only supported when using 'equals' operation.");
        }
        switch(variable.getVariableOperation()) {
            case EQUALS:
                if (nameLess) {
                    processInstanceQuery.variableValueEquals(actualValue);
                } else {
                    processInstanceQuery.variableValueEquals(variable.getName(), actualValue);
                }
                break;
            case EQUALS_IGNORE_CASE:
                if (actualValue instanceof String) {
                    processInstanceQuery.variableValueEqualsIgnoreCase(variable.getName(), (String) actualValue);
                } else {
                    throw new ActivitiIllegalArgumentException("Only string variable values are supported when ignoring casing, but was: " + actualValue.getClass().getName());
                }
                break;
            case NOT_EQUALS:
                processInstanceQuery.variableValueNotEquals(variable.getName(), actualValue);
                break;
            case NOT_EQUALS_IGNORE_CASE:
                if (actualValue instanceof String) {
                    processInstanceQuery.variableValueNotEqualsIgnoreCase(variable.getName(), (String) actualValue);
                } else {
                    throw new ActivitiIllegalArgumentException("Only string variable values are supported when ignoring casing, but was: " + actualValue.getClass().getName());
                }
                break;
            case LIKE:
                if (actualValue instanceof String) {
                    processInstanceQuery.variableValueLike(variable.getName(), (String) actualValue);
                } else {
                    throw new ActivitiIllegalArgumentException("Only string variable values are supported for like, but was: " + actualValue.getClass().getName());
                }
                break;
            case GREATER_THAN:
                processInstanceQuery.variableValueGreaterThan(variable.getName(), actualValue);
                break;
            case GREATER_THAN_OR_EQUALS:
                processInstanceQuery.variableValueGreaterThanOrEqual(variable.getName(), actualValue);
                break;
            case LESS_THAN:
                processInstanceQuery.variableValueLessThan(variable.getName(), actualValue);
                break;
            case LESS_THAN_OR_EQUALS:
                processInstanceQuery.variableValueLessThanOrEqual(variable.getName(), actualValue);
                break;
            default:
                throw new ActivitiIllegalArgumentException("Unsupported variable query operation: " + variable.getVariableOperation());
        }
    }
}

Example 75 with Variable

use of org.wso2.siddhi.query.api.expression.Variable in project carbon-business-process by wso2.

the class BaseHistoricTaskInstanceService method addTaskVariables.

protected void addTaskVariables(HistoricTaskInstanceQuery taskInstanceQuery, List<QueryVariable> variables) {
    for (QueryVariable variable : variables) {
        if (variable.getVariableOperation() == null) {
            throw new ActivitiIllegalArgumentException("Variable operation is missing for variable: " + variable.getName());
        }
        if (variable.getValue() == null) {
            throw new ActivitiIllegalArgumentException("Variable value is missing for variable: " + variable.getName());
        }
        boolean nameLess = variable.getName() == null;
        Object actualValue = new RestResponseFactory().getVariableValue(variable);
        // A value-only query is only possible using equals-operator
        if (nameLess) {
            throw new ActivitiIllegalArgumentException("Value-only query (without a variable-name) is not supported.");
        }
        switch(variable.getVariableOperation()) {
            case EQUALS:
                if (nameLess) {
                    taskInstanceQuery.taskVariableValueEquals(actualValue);
                } else {
                    taskInstanceQuery.taskVariableValueEquals(variable.getName(), actualValue);
                }
                break;
            case EQUALS_IGNORE_CASE:
                if (actualValue instanceof String) {
                    taskInstanceQuery.taskVariableValueEqualsIgnoreCase(variable.getName(), (String) actualValue);
                } else {
                    throw new ActivitiIllegalArgumentException("Only string variable values are supported when ignoring casing, but was: " + actualValue.getClass().getName());
                }
                break;
            case NOT_EQUALS:
                taskInstanceQuery.taskVariableValueNotEquals(variable.getName(), actualValue);
                break;
            case NOT_EQUALS_IGNORE_CASE:
                if (actualValue instanceof String) {
                    taskInstanceQuery.taskVariableValueNotEqualsIgnoreCase(variable.getName(), (String) actualValue);
                } else {
                    throw new ActivitiIllegalArgumentException("Only string variable values are supported when ignoring casing, but was: " + actualValue.getClass().getName());
                }
                break;
            case GREATER_THAN:
                taskInstanceQuery.taskVariableValueGreaterThan(variable.getName(), actualValue);
                break;
            case GREATER_THAN_OR_EQUALS:
                taskInstanceQuery.taskVariableValueGreaterThanOrEqual(variable.getName(), actualValue);
                break;
            case LESS_THAN:
                taskInstanceQuery.taskVariableValueLessThan(variable.getName(), actualValue);
                break;
            case LESS_THAN_OR_EQUALS:
                taskInstanceQuery.taskVariableValueLessThanOrEqual(variable.getName(), actualValue);
                break;
            case LIKE:
                if (actualValue instanceof String) {
                    taskInstanceQuery.taskVariableValueLike(variable.getName(), (String) actualValue);
                } else {
                    throw new ActivitiIllegalArgumentException("Only string variable values are supported using like, but was: " + actualValue.getClass().getName());
                }
                break;
            default:
                throw new ActivitiIllegalArgumentException("Unsupported variable query operation: " + variable.getVariableOperation());
        }
    }
}