Examples with APIPolicyEvent org.wso2.carbon.apimgt.impl.notifier.events.APIPolicyEvent used on opensource projects

Example 1 with APIPolicyEvent

use of org.wso2.carbon.apimgt.impl.notifier.events.APIPolicyEvent in project carbon-apimgt by wso2.

the class APIProviderImpl method updatePolicy.

public void updatePolicy(Policy policy) throws APIManagementException {
    String oldKeyTemplate = null;
    String newKeyTemplate = null;
    if (policy instanceof APIPolicy) {
        APIPolicy apiPolicy = (APIPolicy) policy;
        apiPolicy.setUserLevel(PolicyConstants.ACROSS_ALL);
        // TODO this has done due to update policy method not deleting the second level entries when delete on cascade
        // TODO Need to fix appropriately
        List<Pipeline> pipelineList = apiPolicy.getPipelines();
        if (pipelineList != null && pipelineList.size() != 0) {
            Iterator<Pipeline> pipelineIterator = pipelineList.iterator();
            while (pipelineIterator.hasNext()) {
                Pipeline pipeline = pipelineIterator.next();
                if (!pipeline.isEnabled()) {
                    pipelineIterator.remove();
                } else {
                    if (pipeline.getConditions() != null && pipeline.getConditions().size() != 0) {
                        Iterator<Condition> conditionIterator = pipeline.getConditions().iterator();
                        while (conditionIterator.hasNext()) {
                            Condition condition = conditionIterator.next();
                            if (JavaUtils.isFalseExplicitly(condition.getConditionEnabled())) {
                                conditionIterator.remove();
                            }
                        }
                    } else {
                        pipelineIterator.remove();
                    }
                }
            }
        }
        APIPolicy existingPolicy = apiMgtDAO.getAPIPolicy(policy.getPolicyName(), policy.getTenantId());
        apiPolicy = apiMgtDAO.updateAPIPolicy(apiPolicy);
        // TODO rename level to  resource or appropriate name
        APIManagerConfiguration config = getAPIManagerConfiguration();
        if (log.isDebugEnabled()) {
            log.debug("Calling invalidation cache for API Policy for tenant ");
        }
        String policyContext = APIConstants.POLICY_CACHE_CONTEXT + "/t/" + apiPolicy.getTenantDomain() + "/";
        invalidateResourceCache(policyContext, null, Collections.EMPTY_SET);
        List<Integer> addedConditionGroupIds = new ArrayList<>();
        List<Integer> deletedConditionGroupIds = new ArrayList<>();
        for (Pipeline pipeline : existingPolicy.getPipelines()) {
            deletedConditionGroupIds.add(pipeline.getId());
        }
        for (Pipeline pipeline : apiPolicy.getPipelines()) {
            addedConditionGroupIds.add(pipeline.getId());
        }
        APIPolicyEvent apiPolicyEvent = new APIPolicyEvent(UUID.randomUUID().toString(), System.currentTimeMillis(), APIConstants.EventType.POLICY_UPDATE.name(), tenantId, apiPolicy.getTenantDomain(), apiPolicy.getPolicyId(), apiPolicy.getPolicyName(), apiPolicy.getDefaultQuotaPolicy().getType(), addedConditionGroupIds, deletedConditionGroupIds);
        APIUtil.sendNotification(apiPolicyEvent, APIConstants.NotifierType.POLICY.name());
    } else if (policy instanceof ApplicationPolicy) {
        ApplicationPolicy appPolicy = (ApplicationPolicy) policy;
        apiMgtDAO.updateApplicationPolicy(appPolicy);
        // policy id is not set. retrieving policy to get the id.
        ApplicationPolicy retrievedPolicy = apiMgtDAO.getApplicationPolicy(appPolicy.getPolicyName(), tenantId);
        ApplicationPolicyEvent applicationPolicyEvent = new ApplicationPolicyEvent(UUID.randomUUID().toString(), System.currentTimeMillis(), APIConstants.EventType.POLICY_UPDATE.name(), tenantId, appPolicy.getTenantDomain(), retrievedPolicy.getPolicyId(), appPolicy.getPolicyName(), appPolicy.getDefaultQuotaPolicy().getType());
        APIUtil.sendNotification(applicationPolicyEvent, APIConstants.NotifierType.POLICY.name());
    } else if (policy instanceof SubscriptionPolicy) {
        SubscriptionPolicy subPolicy = (SubscriptionPolicy) policy;
        apiMgtDAO.updateSubscriptionPolicy(subPolicy);
        String monetizationPlan = subPolicy.getMonetizationPlan();
        Map<String, String> monetizationPlanProperties = subPolicy.getMonetizationPlanProperties();
        // call the monetization extension point to create plans (if any)
        if (StringUtils.isNotBlank(monetizationPlan) && MapUtils.isNotEmpty(monetizationPlanProperties)) {
            updateMonetizationPlan(subPolicy);
        }
        // policy id is not set. retrieving policy to get the id.
        SubscriptionPolicy retrievedPolicy = apiMgtDAO.getSubscriptionPolicy(subPolicy.getPolicyName(), tenantId);
        SubscriptionPolicyEvent subscriptionPolicyEvent = new SubscriptionPolicyEvent(UUID.randomUUID().toString(), System.currentTimeMillis(), APIConstants.EventType.POLICY_UPDATE.name(), tenantId, subPolicy.getTenantDomain(), retrievedPolicy.getPolicyId(), subPolicy.getPolicyName(), subPolicy.getDefaultQuotaPolicy().getType(), subPolicy.getRateLimitCount(), subPolicy.getRateLimitTimeUnit(), subPolicy.isStopOnQuotaReach(), subPolicy.getGraphQLMaxDepth(), subPolicy.getGraphQLMaxComplexity(), subPolicy.getSubscriberCount());
        APIUtil.sendNotification(subscriptionPolicyEvent, APIConstants.NotifierType.POLICY.name());
    } else if (policy instanceof GlobalPolicy) {
        GlobalPolicy globalPolicy = (GlobalPolicy) policy;
        // getting key templates before updating database
        GlobalPolicy oldGlobalPolicy = apiMgtDAO.getGlobalPolicy(policy.getPolicyName());
        oldKeyTemplate = oldGlobalPolicy.getKeyTemplate();
        newKeyTemplate = globalPolicy.getKeyTemplate();
        apiMgtDAO.updateGlobalPolicy(globalPolicy);
        GlobalPolicy retrievedPolicy = apiMgtDAO.getGlobalPolicy(globalPolicy.getPolicyName());
        GlobalPolicyEvent globalPolicyEvent = new GlobalPolicyEvent(UUID.randomUUID().toString(), System.currentTimeMillis(), APIConstants.EventType.POLICY_UPDATE.name(), tenantId, globalPolicy.getTenantDomain(), retrievedPolicy.getPolicyId(), globalPolicy.getPolicyName());
        APIUtil.sendNotification(globalPolicyEvent, APIConstants.NotifierType.POLICY.name());
    } else {
        String msg = "Policy type " + policy.getClass().getName() + " is not supported";
        log.error(msg);
        throw new UnsupportedPolicyTypeException(msg);
    }
    // publishing keytemplate after update
    if (oldKeyTemplate != null && newKeyTemplate != null) {
        publishKeyTemplateEvent(oldKeyTemplate, "remove");
        publishKeyTemplateEvent(newKeyTemplate, "add");
    }
}

Example 2 with APIPolicyEvent

use of org.wso2.carbon.apimgt.impl.notifier.events.APIPolicyEvent in project carbon-apimgt by wso2.

the class APIProviderImpl method addPolicy.

/**
 * Deploy policy to global CEP and persist the policy object
 *
 * @param policy policy object
 */
public void addPolicy(Policy policy) throws APIManagementException {
    if (policy instanceof APIPolicy) {
        APIPolicy apiPolicy = (APIPolicy) policy;
        // Check if there's a policy exists before adding the new policy
        Policy existingPolicy = getAPIPolicy(userNameWithoutChange, apiPolicy.getPolicyName());
        if (existingPolicy != null) {
            handleException("Advanced Policy with name " + apiPolicy.getPolicyName() + " already exists");
        }
        apiPolicy.setUserLevel(PolicyConstants.ACROSS_ALL);
        apiPolicy = apiMgtDAO.addAPIPolicy(apiPolicy);
        List<Integer> addedConditionGroupIds = new ArrayList<>();
        for (Pipeline pipeline : apiPolicy.getPipelines()) {
            addedConditionGroupIds.add(pipeline.getId());
        }
        APIPolicyEvent apiPolicyEvent = new APIPolicyEvent(UUID.randomUUID().toString(), System.currentTimeMillis(), APIConstants.EventType.POLICY_CREATE.name(), tenantId, apiPolicy.getTenantDomain(), apiPolicy.getPolicyId(), apiPolicy.getPolicyName(), apiPolicy.getDefaultQuotaPolicy().getType(), addedConditionGroupIds, null);
        APIUtil.sendNotification(apiPolicyEvent, APIConstants.NotifierType.POLICY.name());
    } else if (policy instanceof ApplicationPolicy) {
        ApplicationPolicy appPolicy = (ApplicationPolicy) policy;
        // Check if there's a policy exists before adding the new policy
        Policy existingPolicy = getApplicationPolicy(userNameWithoutChange, appPolicy.getPolicyName());
        if (existingPolicy != null) {
            handleException("Application Policy with name " + appPolicy.getPolicyName() + " already exists");
        }
        apiMgtDAO.addApplicationPolicy(appPolicy);
        // policy id is not set. retrieving policy to get the id.
        ApplicationPolicy retrievedPolicy = apiMgtDAO.getApplicationPolicy(appPolicy.getPolicyName(), tenantId);
        ApplicationPolicyEvent applicationPolicyEvent = new ApplicationPolicyEvent(UUID.randomUUID().toString(), System.currentTimeMillis(), APIConstants.EventType.POLICY_CREATE.name(), tenantId, appPolicy.getTenantDomain(), retrievedPolicy.getPolicyId(), appPolicy.getPolicyName(), appPolicy.getDefaultQuotaPolicy().getType());
        APIUtil.sendNotification(applicationPolicyEvent, APIConstants.NotifierType.POLICY.name());
    } else if (policy instanceof SubscriptionPolicy) {
        SubscriptionPolicy subPolicy = (SubscriptionPolicy) policy;
        // Check if there's a policy exists before adding the new policy
        Policy existingPolicy = getSubscriptionPolicy(userNameWithoutChange, subPolicy.getPolicyName());
        if (existingPolicy != null) {
            handleException("Subscription Policy with name " + subPolicy.getPolicyName() + " already exists");
        }
        apiMgtDAO.addSubscriptionPolicy(subPolicy);
        String monetizationPlan = subPolicy.getMonetizationPlan();
        Map<String, String> monetizationPlanProperties = subPolicy.getMonetizationPlanProperties();
        if (StringUtils.isNotBlank(monetizationPlan) && MapUtils.isNotEmpty(monetizationPlanProperties)) {
            createMonetizationPlan(subPolicy);
        }
        // policy id is not set. retrieving policy to get the id.
        SubscriptionPolicy retrievedPolicy = apiMgtDAO.getSubscriptionPolicy(subPolicy.getPolicyName(), tenantId);
        SubscriptionPolicyEvent subscriptionPolicyEvent = new SubscriptionPolicyEvent(UUID.randomUUID().toString(), System.currentTimeMillis(), APIConstants.EventType.POLICY_CREATE.name(), tenantId, subPolicy.getTenantDomain(), retrievedPolicy.getPolicyId(), subPolicy.getPolicyName(), subPolicy.getDefaultQuotaPolicy().getType(), subPolicy.getRateLimitCount(), subPolicy.getRateLimitTimeUnit(), subPolicy.isStopOnQuotaReach(), subPolicy.getGraphQLMaxDepth(), subPolicy.getGraphQLMaxComplexity(), subPolicy.getSubscriberCount());
        APIUtil.sendNotification(subscriptionPolicyEvent, APIConstants.NotifierType.POLICY.name());
    } else if (policy instanceof GlobalPolicy) {
        GlobalPolicy globalPolicy = (GlobalPolicy) policy;
        // checking if policy already exist
        Policy existingPolicy = getGlobalPolicy(globalPolicy.getPolicyName());
        if (existingPolicy != null) {
            throw new APIManagementException("Policy name already exists");
        }
        apiMgtDAO.addGlobalPolicy(globalPolicy);
        publishKeyTemplateEvent(globalPolicy.getKeyTemplate(), "add");
        GlobalPolicy retrievedPolicy = apiMgtDAO.getGlobalPolicy(globalPolicy.getPolicyName());
        GlobalPolicyEvent globalPolicyEvent = new GlobalPolicyEvent(UUID.randomUUID().toString(), System.currentTimeMillis(), APIConstants.EventType.POLICY_CREATE.name(), tenantId, globalPolicy.getTenantDomain(), retrievedPolicy.getPolicyId(), globalPolicy.getPolicyName());
        APIUtil.sendNotification(globalPolicyEvent, APIConstants.NotifierType.POLICY.name());
    } else {
        String msg = "Policy type " + policy.getClass().getName() + " is not supported";
        log.error(msg);
        throw new UnsupportedPolicyTypeException(msg);
    }
}

Example 3 with APIPolicyEvent

use of org.wso2.carbon.apimgt.impl.notifier.events.APIPolicyEvent in project carbon-apimgt by wso2.

the class KeyManagerDataServiceImpl method removeAPIPolicy.

@Override
public void removeAPIPolicy(APIPolicyEvent event) {
    if (log.isDebugEnabled()) {
        log.debug("Remove API Policy in datastore in tenant " + event.getTenantDomain());
    }
    SubscriptionDataStore store = SubscriptionDataHolder.getInstance().getTenantSubscriptionStore(event.getTenantDomain());
    if (store == null) {
        if (log.isDebugEnabled()) {
            log.debug("Ignoring the Event due to tenant " + event.getTenantDomain() + " not loaded");
        }
        return;
    }
    store.removeApiPolicy(getAPIPolicyFromAPIPolicyEvent(event));
}

Example 4 with APIPolicyEvent

use of org.wso2.carbon.apimgt.impl.notifier.events.APIPolicyEvent in project carbon-apimgt by wso2.

the class GatewayJMSMessageListener method handleNotificationMessage.

private void handleNotificationMessage(String eventType, long timestamp, String encodedEvent) {
    byte[] eventDecoded = Base64.decodeBase64(encodedEvent);
    String eventJson = new String(eventDecoded);
    if (APIConstants.EventType.DEPLOY_API_IN_GATEWAY.name().equals(eventType) || APIConstants.EventType.REMOVE_API_FROM_GATEWAY.name().equals(eventType)) {
        DeployAPIInGatewayEvent gatewayEvent = new Gson().fromJson(new String(eventDecoded), DeployAPIInGatewayEvent.class);
        String tenantDomain = gatewayEvent.getTenantDomain();
        boolean tenantLoaded = ServiceReferenceHolder.getInstance().isTenantLoaded(tenantDomain);
        if (!tenantLoaded) {
            String syncKey = tenantDomain.concat("__").concat(this.getClass().getName());
            synchronized (syncKey.intern()) {
                tenantLoaded = ServiceReferenceHolder.getInstance().isTenantLoaded(tenantDomain);
                if (!tenantLoaded) {
                    APIUtil.loadTenantConfigBlockingMode(tenantDomain);
                }
            }
        }
        if (tenantLoaded) {
            Set<String> systemConfiguredGatewayLabels = new HashSet(gatewayEvent.getGatewayLabels());
            systemConfiguredGatewayLabels.retainAll(gatewayArtifactSynchronizerProperties.getGatewayLabels());
            if (!systemConfiguredGatewayLabels.isEmpty()) {
                ServiceReferenceHolder.getInstance().getKeyManagerDataService().updateDeployedAPIRevision(gatewayEvent);
                if (EventType.DEPLOY_API_IN_GATEWAY.name().equals(eventType)) {
                    boolean tenantFlowStarted = false;
                    try {
                        startTenantFlow(tenantDomain);
                        tenantFlowStarted = true;
                        inMemoryApiDeployer.deployAPI(gatewayEvent);
                    } catch (ArtifactSynchronizerException e) {
                        log.error("Error in deploying artifacts for " + gatewayEvent.getUuid() + "in the Gateway");
                    } finally {
                        if (tenantFlowStarted) {
                            endTenantFlow();
                        }
                    }
                }
                if (APIConstants.EventType.REMOVE_API_FROM_GATEWAY.name().equals(eventType)) {
                    boolean tenantFlowStarted = false;
                    try {
                        startTenantFlow(tenantDomain);
                        tenantFlowStarted = true;
                        inMemoryApiDeployer.unDeployAPI(gatewayEvent);
                    } catch (ArtifactSynchronizerException e) {
                        log.error("Error in undeploying artifacts");
                    } finally {
                        if (tenantFlowStarted) {
                            endTenantFlow();
                        }
                    }
                }
            }
            if (debugEnabled) {
                log.debug("Event with ID " + gatewayEvent.getEventId() + " is received and " + gatewayEvent.getUuid() + " is successfully deployed/undeployed");
            }
        }
    }
    if (EventType.APPLICATION_CREATE.toString().equals(eventType) || EventType.APPLICATION_UPDATE.toString().equals(eventType)) {
        ApplicationEvent event = new Gson().fromJson(eventJson, ApplicationEvent.class);
        ServiceReferenceHolder.getInstance().getKeyManagerDataService().addOrUpdateApplication(event);
        ;
    } else if (EventType.SUBSCRIPTIONS_CREATE.toString().equals(eventType) || EventType.SUBSCRIPTIONS_UPDATE.toString().equals(eventType)) {
        SubscriptionEvent event = new Gson().fromJson(eventJson, SubscriptionEvent.class);
        ServiceReferenceHolder.getInstance().getKeyManagerDataService().addOrUpdateSubscription(event);
    } else if (EventType.API_UPDATE.toString().equals(eventType)) {
        APIEvent event = new Gson().fromJson(eventJson, APIEvent.class);
        ServiceReferenceHolder.getInstance().getKeyManagerDataService().addOrUpdateAPI(event);
    } else if (EventType.API_LIFECYCLE_CHANGE.toString().equals(eventType)) {
        APIEvent event = new Gson().fromJson(eventJson, APIEvent.class);
        if (APIStatus.CREATED.toString().equals(event.getApiStatus()) || APIStatus.RETIRED.toString().equals(event.getApiStatus())) {
            ServiceReferenceHolder.getInstance().getKeyManagerDataService().removeAPI(event);
        } else {
            ServiceReferenceHolder.getInstance().getKeyManagerDataService().addOrUpdateAPI(event);
        }
    } else if (EventType.APPLICATION_REGISTRATION_CREATE.toString().equals(eventType)) {
        ApplicationRegistrationEvent event = new Gson().fromJson(eventJson, ApplicationRegistrationEvent.class);
        ServiceReferenceHolder.getInstance().getKeyManagerDataService().addOrUpdateApplicationKeyMapping(event);
    } else if (EventType.SUBSCRIPTIONS_DELETE.toString().equals(eventType)) {
        SubscriptionEvent event = new Gson().fromJson(eventJson, SubscriptionEvent.class);
        ServiceReferenceHolder.getInstance().getKeyManagerDataService().removeSubscription(event);
    } else if (EventType.APPLICATION_DELETE.toString().equals(eventType)) {
        ApplicationEvent event = new Gson().fromJson(eventJson, ApplicationEvent.class);
        ServiceReferenceHolder.getInstance().getKeyManagerDataService().removeApplication(event);
    } else if (EventType.REMOVE_APPLICATION_KEYMAPPING.toString().equals(eventType)) {
        ApplicationRegistrationEvent event = new Gson().fromJson(eventJson, ApplicationRegistrationEvent.class);
        ServiceReferenceHolder.getInstance().getKeyManagerDataService().removeApplicationKeyMapping(event);
    } else if (EventType.SCOPE_CREATE.toString().equals(eventType)) {
        ScopeEvent event = new Gson().fromJson(eventJson, ScopeEvent.class);
        ServiceReferenceHolder.getInstance().getKeyManagerDataService().addScope(event);
    } else if (EventType.SCOPE_UPDATE.toString().equals(eventType)) {
        ScopeEvent event = new Gson().fromJson(eventJson, ScopeEvent.class);
        ServiceReferenceHolder.getInstance().getKeyManagerDataService().addScope(event);
    } else if (EventType.SCOPE_DELETE.toString().equals(eventType)) {
        ScopeEvent event = new Gson().fromJson(eventJson, ScopeEvent.class);
        ServiceReferenceHolder.getInstance().getKeyManagerDataService().deleteScope(event);
    } else if (EventType.POLICY_CREATE.toString().equals(eventType) || EventType.POLICY_DELETE.toString().equals(eventType)) {
        PolicyEvent event = new Gson().fromJson(eventJson, PolicyEvent.class);
        boolean updatePolicy = false;
        boolean deletePolicy = false;
        if (EventType.POLICY_CREATE.toString().equals(eventType) || EventType.POLICY_UPDATE.toString().equals(eventType)) {
            updatePolicy = true;
        } else if (EventType.POLICY_DELETE.toString().equals(eventType)) {
            deletePolicy = true;
        }
        if (event.getPolicyType() == PolicyType.API) {
            APIPolicyEvent policyEvent = new Gson().fromJson(eventJson, APIPolicyEvent.class);
            if (updatePolicy) {
                ServiceReferenceHolder.getInstance().getKeyManagerDataService().addOrUpdateAPIPolicy(policyEvent);
            } else if (deletePolicy) {
                ServiceReferenceHolder.getInstance().getKeyManagerDataService().removeAPIPolicy(policyEvent);
            }
        } else if (event.getPolicyType() == PolicyType.SUBSCRIPTION) {
            SubscriptionPolicyEvent policyEvent = new Gson().fromJson(eventJson, SubscriptionPolicyEvent.class);
            if (updatePolicy) {
                ServiceReferenceHolder.getInstance().getKeyManagerDataService().addOrUpdateSubscriptionPolicy(policyEvent);
            } else if (deletePolicy) {
                ServiceReferenceHolder.getInstance().getKeyManagerDataService().removeSubscriptionPolicy(policyEvent);
            }
        } else if (event.getPolicyType() == PolicyType.APPLICATION) {
            ApplicationPolicyEvent policyEvent = new Gson().fromJson(eventJson, ApplicationPolicyEvent.class);
            if (updatePolicy) {
                ServiceReferenceHolder.getInstance().getKeyManagerDataService().addOrUpdateApplicationPolicy(policyEvent);
            } else if (deletePolicy) {
                ServiceReferenceHolder.getInstance().getKeyManagerDataService().removeApplicationPolicy(policyEvent);
            }
        }
    } else if (EventType.ENDPOINT_CERTIFICATE_ADD.toString().equals(eventType) || EventType.ENDPOINT_CERTIFICATE_REMOVE.toString().equals(eventType)) {
        CertificateEvent certificateEvent = new Gson().fromJson(eventJson, CertificateEvent.class);
        if (EventType.ENDPOINT_CERTIFICATE_ADD.toString().equals(eventType)) {
            try {
                new EndpointCertificateDeployer(certificateEvent.getTenantDomain()).deployCertificate(certificateEvent.getAlias());
            } catch (APIManagementException e) {
                log.error(e);
            }
        } else if (EventType.ENDPOINT_CERTIFICATE_REMOVE.toString().equals(eventType)) {
            boolean tenantFlowStarted = false;
            try {
                PrivilegedCarbonContext.startTenantFlow();
                PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantDomain(certificateEvent.getTenantDomain(), true);
                tenantFlowStarted = true;
                CertificateManagerImpl.getInstance().deleteCertificateFromGateway(certificateEvent.getAlias());
            } finally {
                if (tenantFlowStarted) {
                    PrivilegedCarbonContext.endTenantFlow();
                }
            }
        }
    } else if (EventType.GA_CONFIG_UPDATE.toString().equals(eventType)) {
        GoogleAnalyticsConfigEvent googleAnalyticsConfigEvent = new Gson().fromJson(eventJson, GoogleAnalyticsConfigEvent.class);
        try {
            new GoogleAnalyticsConfigDeployer(googleAnalyticsConfigEvent.getTenantDomain()).deploy();
        } catch (APIManagementException e) {
            log.error(e);
        }
    } else if (EventType.UDATE_API_LOG_LEVEL.toString().equals(eventType)) {
        APIEvent apiEvent = new Gson().fromJson(eventJson, APIEvent.class);
        APILoggerManager.getInstance().updateLoggerMap(apiEvent.getApiContext(), apiEvent.getLogLevel());
    }
}

Example 5 with APIPolicyEvent

use of org.wso2.carbon.apimgt.impl.notifier.events.APIPolicyEvent in project carbon-apimgt by wso2.

the class PolicyUtil method deployPolicy.

/**
 * Deploy the given throttle policy in the Traffic Manager.
 *
 * @param policy      policy object
 * @param policyEvent policy event object which was triggered
 */
public static void deployPolicy(Policy policy, PolicyEvent policyEvent) {
    EventProcessorService eventProcessorService = ServiceReferenceHolder.getInstance().getEventProcessorService();
    ThrottlePolicyTemplateBuilder policyTemplateBuilder = new ThrottlePolicyTemplateBuilder();
    Map<String, String> policiesToDeploy = new HashMap<>();
    List<String> policiesToUndeploy = new ArrayList<>();
    try {
        PrivilegedCarbonContext.startTenantFlow();
        PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantDomain(APIConstants.SUPER_TENANT_DOMAIN, true);
        String policyFile;
        String policyString;
        if (Policy.PolicyType.SUBSCRIPTION.equals(policy.getType()) && policy instanceof SubscriptionPolicy) {
            // Add Subscription policy
            policyFile = String.join(APIConstants.DELEM_UNDERSCORE, policy.getTenantDomain(), PolicyConstants.POLICY_LEVEL_SUB, policy.getName());
            policyString = policyTemplateBuilder.getThrottlePolicyForSubscriptionLevel((SubscriptionPolicy) policy);
            policiesToDeploy.put(policyFile, policyString);
        } else if (Policy.PolicyType.APPLICATION.equals(policy.getType()) && policy instanceof ApplicationPolicy) {
            // Add Application policy
            policyFile = String.join(APIConstants.DELEM_UNDERSCORE, policy.getTenantDomain(), PolicyConstants.POLICY_LEVEL_APP, policy.getName());
            policyString = policyTemplateBuilder.getThrottlePolicyForAppLevel((ApplicationPolicy) policy);
            policiesToDeploy.put(policyFile, policyString);
        } else if (Policy.PolicyType.API.equals(policy.getType()) && policy instanceof ApiPolicy) {
            // Add API policy
            policiesToDeploy = policyTemplateBuilder.getThrottlePolicyForAPILevel((ApiPolicy) policy);
            String defaultPolicy = policyTemplateBuilder.getThrottlePolicyForAPILevelDefault((ApiPolicy) policy);
            policyFile = String.join(APIConstants.DELEM_UNDERSCORE, policy.getTenantDomain(), PolicyConstants.POLICY_LEVEL_RESOURCE, policy.getName());
            String defaultPolicyName = policyFile + APIConstants.THROTTLE_POLICY_DEFAULT;
            policiesToDeploy.put(defaultPolicyName, defaultPolicy);
            if (policyEvent instanceof APIPolicyEvent) {
                List<Integer> deletedConditionGroupIds = ((APIPolicyEvent) policyEvent).getDeletedConditionGroupIds();
                // Undeploy removed condition groups
                if (deletedConditionGroupIds != null) {
                    for (int conditionGroupId : deletedConditionGroupIds) {
                        policiesToUndeploy.add(policyFile + APIConstants.THROTTLE_POLICY_CONDITION + conditionGroupId);
                    }
                }
            }
        } else if (Policy.PolicyType.GLOBAL.equals(policy.getType()) && policy instanceof GlobalPolicy) {
            // Add Global policy
            GlobalPolicy globalPolicy = (GlobalPolicy) policy;
            policyFile = String.join(APIConstants.DELEM_UNDERSCORE, PolicyConstants.POLICY_LEVEL_GLOBAL, policy.getName());
            policyString = policyTemplateBuilder.getThrottlePolicyForGlobalLevel(globalPolicy);
            policiesToDeploy.put(policyFile, policyString);
        }
        // Undeploy removed policies
        undeployPolicies(policiesToUndeploy);
        for (Map.Entry<String, String> pair : policiesToDeploy.entrySet()) {
            String policyPlanName = pair.getKey();
            String flowString = pair.getValue();
            String executionPlan = null;
            try {
                executionPlan = eventProcessorService.getActiveExecutionPlan(policyPlanName);
            } catch (ExecutionPlanConfigurationException e) {
                // Deploy new policies
                eventProcessorService.deployExecutionPlan(flowString);
            }
            if (executionPlan != null) {
                // Update existing policies
                eventProcessorService.editActiveExecutionPlan(flowString, policyPlanName);
            }
        }
    } catch (APITemplateException e) {
        log.error("Error in creating execution plan", e);
    } catch (ExecutionPlanConfigurationException | ExecutionPlanDependencyValidationException e) {
        log.error("Error in deploying execution plan", e);
    } finally {
        PrivilegedCarbonContext.endTenantFlow();
    }
}