Examples with APITemplateException org.wso2.carbon.apimgt.impl.template.APITemplateException used on opensource projects

Example 21 with APITemplateException

use of org.wso2.carbon.apimgt.impl.template.APITemplateException in project carbon-apimgt by wso2.

the class ThrottlePolicyTemplateBuilder method getThrottlePolicyForGlobalLevel.

/**
 * Generate policy for global level
 *
 * @param policy policy with level 'global'. Multiple pipelines are not allowed. Can define more than one condition
 *               as set of conditions. all these conditions should be passed as a single pipeline
 * @return the generated execution plan for the policy
 * @throws APITemplateException if failed to generate policy
 */
public String getThrottlePolicyForGlobalLevel(GlobalPolicy policy) throws APITemplateException {
    StringWriter writer = new StringWriter();
    if (log.isDebugEnabled()) {
        log.debug("Generating policy for global level :" + policy.toString());
    }
    try {
        VelocityEngine velocityengine = new VelocityEngine();
        APIUtil.initializeVelocityContext(velocityengine);
        velocityengine.setProperty(RuntimeConstants.FILE_RESOURCE_LOADER_PATH, CarbonUtils.getCarbonHome());
        velocityengine.init();
        Template template = velocityengine.getTemplate(getTemplatePathForGlobal());
        VelocityContext context = new VelocityContext();
        setConstantContext(context);
        context.put("policy", policy);
        if (log.isDebugEnabled()) {
            log.debug("Policy : " + writer.toString());
        }
        template.merge(context, writer);
    } catch (VelocityException e) {
        log.error("Velocity Error", e);
        throw new APITemplateException("Velocity Error", e);
    }
    return writer.toString();
}

Example 22 with APITemplateException

use of org.wso2.carbon.apimgt.impl.template.APITemplateException in project carbon-apimgt by wso2.

the class ThrottlePolicyTemplateBuilder method getThrottlePolicyForAPILevelDefault.

/**
 * Generate default policy for API level throttling
 *
 * @param policy Policy with level 'api'. Policy can have multiple pipelines and a default condition which will be
 *               used as else condition
 * @return the generated execution plan for the policy
 * @throws APITemplateException if failed to generate policy
 */
public String getThrottlePolicyForAPILevelDefault(ApiPolicy policy) throws APITemplateException {
    if (log.isDebugEnabled()) {
        log.debug("Generating default policy for API Level :" + policy.toString());
    }
    Set<String> conditionsSet = new HashSet<>();
    try {
        VelocityEngine velocityengine = new VelocityEngine();
        APIUtil.initializeVelocityContext(velocityengine);
        velocityengine.setProperty(RuntimeConstants.FILE_RESOURCE_LOADER_PATH, CarbonUtils.getCarbonHome());
        velocityengine.init();
        Template template = velocityengine.getTemplate(getTemplatePathForAPIDefaultPolicy());
        StringWriter writer;
        VelocityContext context;
        List<APIPolicyConditionGroup> conditionGroups = policy.getConditionGroups();
        JSONArray policyConditionJson = new JSONArray();
        if (conditionGroups != null) {
            for (APIPolicyConditionGroup conditionGroup : conditionGroups) {
                if (conditionGroup.getDefaultLimit() == null) {
                    continue;
                }
                policyConditionJson.add(getPolicyConditionJson(conditionGroup.getCondition()));
                String conditionString = getPolicyConditionForDefault(conditionGroup.getCondition());
                if (!StringUtils.isEmpty(conditionString)) {
                    conditionsSet.add(conditionString);
                }
            }
        }
        context = new VelocityContext();
        setConstantContext(context);
        context.put("policy", policy);
        context.put("quotaPolicy", policy.getDefaultLimit());
        context.put("evaluatedConditions", new String(Base64.encodeBase64(policyConditionJson.toJSONString().getBytes(StandardCharsets.UTF_8)), StandardCharsets.UTF_8));
        String conditionSetString = getConditionForDefault(conditionsSet);
        if (!StringUtils.isEmpty(conditionSetString)) {
            context.put("condition", " AND " + conditionSetString);
        } else {
            context.put("condition", "");
        }
        writer = new StringWriter();
        template.merge(context, writer);
        if (log.isDebugEnabled()) {
            log.debug("Policy : " + writer.toString());
        }
        return writer.toString();
    } catch (VelocityException e) {
        log.error("Velocity Error", e);
        throw new APITemplateException("Velocity Error", e);
    }
}

Example 23 with APITemplateException

use of org.wso2.carbon.apimgt.impl.template.APITemplateException in project carbon-apimgt by wso2.

the class ThrottlePolicyTemplateBuilder method getThrottlePolicyForAPILevel.

/**
 * Generate policy for API level throttling
 *
 * @param policy Policy with level 'api'. Policy can have multiple pipelines and a default condition which will be
 *               used as else condition
 * @return a Map containing a set of policies for each condition group
 * @throws APITemplateException if failed to generate policy
 */
public Map<String, String> getThrottlePolicyForAPILevel(ApiPolicy policy) throws APITemplateException {
    if (log.isDebugEnabled()) {
        log.debug("Generating policy for API Level :" + policy.toString());
    }
    Map<String, String> policyArray = new HashMap<>();
    try {
        VelocityEngine velocityengine = new VelocityEngine();
        APIUtil.initializeVelocityContext(velocityengine);
        velocityengine.setProperty(RuntimeConstants.FILE_RESOURCE_LOADER_PATH, CarbonUtils.getCarbonHome());
        velocityengine.init();
        Template template = velocityengine.getTemplate(getTemplatePathForAPI());
        StringWriter writer;
        VelocityContext context;
        if (policy.getConditionGroups() != null) {
            for (APIPolicyConditionGroup conditionGroup : policy.getConditionGroups()) {
                if (conditionGroup.getDefaultLimit() == null) {
                    continue;
                }
                context = new VelocityContext();
                setConstantContext(context);
                context.put("policy", policy);
                context.put("quotaPolicy", conditionGroup.getDefaultLimit());
                context.put("pipeline", "condition_" + conditionGroup.getConditionGroupId());
                String conditionString = getPolicyCondition(conditionGroup.getCondition());
                JSONArray conditions = new JSONArray();
                conditions.add(getPolicyConditionJson(conditionGroup.getCondition()));
                context.put("condition", " AND " + conditionString);
                context.put("evaluatedConditions", new String(Base64.encodeBase64(conditions.toJSONString().getBytes(StandardCharsets.UTF_8)), StandardCharsets.UTF_8));
                writer = new StringWriter();
                template.merge(context, writer);
                if (log.isDebugEnabled()) {
                    log.debug("Policy : " + writer.toString());
                }
                String policyName = policy.getTenantDomain() + APIConstants.DELEM_UNDERSCORE + PolicyConstants.POLICY_LEVEL_RESOURCE + APIConstants.DELEM_UNDERSCORE + policy.getName() + APIConstants.THROTTLE_POLICY_CONDITION + conditionGroup.getConditionGroupId();
                policyArray.put(policyName, writer.toString());
            }
        }
    } catch (VelocityException e) {
        log.error("Velocity Error", e);
        throw new APITemplateException("Velocity Error", e);
    }
    return policyArray;
}

Example 24 with APITemplateException

use of org.wso2.carbon.apimgt.impl.template.APITemplateException in project carbon-apimgt by wso2.

the class APITemplateBuilderImpl method getConfigStringForPrototypeScriptAPI.

@Override
public String getConfigStringForPrototypeScriptAPI(Environment environment) throws APITemplateException {
    StringWriter writer = new StringWriter();
    try {
        // build the context for template and apply the necessary decorators
        ConfigContext configcontext = new APIConfigContext(this.api);
        configcontext = new TransportConfigContext(configcontext, api);
        configcontext = new ResourceConfigContext(configcontext, api);
        configcontext = new EndpointBckConfigContext(configcontext, api);
        configcontext = new EndpointConfigContext(configcontext, api);
        configcontext = new SecurityConfigContext(configcontext, api);
        configcontext = new JwtConfigContext(configcontext);
        configcontext = new ResponseCacheConfigContext(configcontext, api);
        configcontext = new HandlerConfigContex(configcontext, handlers);
        configcontext = new EnvironmentConfigContext(configcontext, environment);
        configcontext = new TemplateUtilContext(configcontext);
        // @todo: this validation might be better to do when the builder is initialized.
        configcontext.validate();
        VelocityContext context = configcontext.getContext();
        context.internalGetKeys();
        /*  first, initialize velocity engine  */
        VelocityEngine velocityengine = new VelocityEngine();
        APIUtil.initializeVelocityContext(velocityengine);
        velocityengine.setProperty(RuntimeConstants.FILE_RESOURCE_LOADER_PATH, CarbonUtils.getCarbonHome());
        initVelocityEngine(velocityengine);
        Template t = velocityengine.getTemplate(this.getPrototypeTemplatePath());
        t.merge(context, writer);
    } catch (Exception e) {
        log.error("Velocity Error", e);
        throw new APITemplateException("Velocity Error", e);
    }
    return writer.toString();
}

Example 25 with APITemplateException

use of org.wso2.carbon.apimgt.impl.template.APITemplateException in project carbon-apimgt by wso2.

the class APITemplateBuilderImpl method getConfigStringForEndpointTemplate.

/**
 * Sets the necessary variables to velocity context.
 *
 * @param endpointType Type of the endpoint : production or sandbox
 * @return The string of endpoint file content
 * @throws APITemplateException Thrown if an error occurred
 */
@Override
public String getConfigStringForEndpointTemplate(String endpointType) throws APITemplateException {
    StringWriter writer = new StringWriter();
    try {
        ConfigContext configcontext = new APIConfigContext(this.api);
        configcontext = new EndpointConfigContext(configcontext, this.apiProduct, api);
        configcontext = new TemplateUtilContext(configcontext);
        configcontext.validate();
        VelocityContext context = configcontext.getContext();
        context.internalGetKeys();
        VelocityEngine velocityengine = new VelocityEngine();
        APIUtil.initializeVelocityContext(velocityengine);
        velocityengine.setProperty(RuntimeConstants.FILE_RESOURCE_LOADER_PATH, CarbonUtils.getCarbonHome());
        initVelocityEngine(velocityengine);
        context.put("type", endpointType);
        Template template = velocityengine.getTemplate(this.getEndpointTemplatePath());
        template.merge(context, writer);
    } catch (Exception e) {
        log.error("Velocity Error");
        throw new APITemplateException("Velocity Error", e);
    }
    return writer.toString();
}