From ffe99e4b5c10956ed05c8cd11c8a3fca78427cbb Mon Sep 17 00:00:00 2001 From: "ning.xi" Date: Thu, 20 Feb 2020 11:17:28 +0800 Subject: remove code duplication in plugin-event-carrier Issue-ID: POLICY-1884 Change-Id: I610d7ee34d640cc3a7d3381b24993ee9b6f76f2d Signed-off-by: ning.xi --- .../RestClientCarrierTechnologyParameters.java | 204 +-------------- .../RestClientCarrierTechnologyParametersTest.java | 2 +- .../RestRequestorCarrierTechnologyParameters.java | 180 +------------ ...stRequestorCarrierTechnologyParametersTest.java | 2 +- .../RestPluginCarrierTechnologyParameters.java | 277 +++++++++++++++++++++ 5 files changed, 298 insertions(+), 367 deletions(-) create mode 100644 services/services-engine/src/main/java/org/onap/policy/apex/service/parameters/carriertechnology/RestPluginCarrierTechnologyParameters.java diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restclient/src/main/java/org/onap/policy/apex/plugins/event/carrier/restclient/RestClientCarrierTechnologyParameters.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restclient/src/main/java/org/onap/policy/apex/plugins/event/carrier/restclient/RestClientCarrierTechnologyParameters.java index 8d783c5cd..0b73a8793 100644 --- a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restclient/src/main/java/org/onap/policy/apex/plugins/event/carrier/restclient/RestClientCarrierTechnologyParameters.java +++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restclient/src/main/java/org/onap/policy/apex/plugins/event/carrier/restclient/RestClientCarrierTechnologyParameters.java @@ -34,7 +34,7 @@ import javax.ws.rs.core.MultivaluedMap; import lombok.Getter; import lombok.Setter; import org.apache.commons.lang3.StringUtils; -import org.onap.policy.apex.service.parameters.carriertechnology.CarrierTechnologyParameters; +import org.onap.policy.apex.service.parameters.carriertechnology.RestPluginCarrierTechnologyParameters; import org.onap.policy.common.parameters.GroupValidationResult; import org.onap.policy.common.parameters.ValidationStatus; import org.onap.policy.common.utils.validation.ParameterValidationUtils; @@ -62,211 +62,23 @@ import org.slf4j.LoggerFactory; //@formatter:on @Setter @Getter -public class RestClientCarrierTechnologyParameters extends CarrierTechnologyParameters { +public class RestClientCarrierTechnologyParameters extends RestPluginCarrierTechnologyParameters { // Get a reference to the logger private static final Logger LOGGER = LoggerFactory.getLogger(RestClientCarrierTechnologyParameters.class); - - /** The supported HTTP methods. */ - public enum HttpMethod { - GET, PUT, POST, DELETE - } - - /** The label of this carrier technology. */ - public static final String RESTCLIENT_CARRIER_TECHNOLOGY_LABEL = "RESTCLIENT"; - - /** The producer plugin class for the REST carrier technology. */ - public static final String RESTCLIENT_EVENT_PRODUCER_PLUGIN_CLASS = ApexRestClientProducer.class.getName(); - - /** The consumer plugin class for the REST carrier technology. */ - public static final String RESTCLIENT_EVENT_CONSUMER_PLUGIN_CLASS = ApexRestClientConsumer.class.getName(); - - /** The default HTTP code filter, allows 2xx HTTP codes through. */ - public static final String DEFAULT_HTTP_CODE_FILTER = "[2][0-9][0-9]"; - - // Commonly occurring strings - private static final String HTTP_HEADERS = "httpHeaders"; - private static final String HTTP_CODE_FILTER = "httpCodeFilter"; - - // Regular expression patterns for finding and checking keys in URLs - private static final Pattern patternProperKey = Pattern.compile("(?<=\\{)[^}]*(?=\\})"); - private static final Pattern patternErrorKey = - Pattern.compile("(\\{[^\\{}]*.?\\{)|(\\{[^\\{}]*$)|(\\}[^\\{}]*.?\\})|(^[^\\{}]*.?\\})|\\{\\s*\\}"); - - private String url = null; - private HttpMethod httpMethod = null; - private String[][] httpHeaders = null; - private String httpCodeFilter = DEFAULT_HTTP_CODE_FILTER; - /** * Constructor to create a REST carrier technology parameters instance and register the instance with the parameter * service. */ public RestClientCarrierTechnologyParameters() { super(); - + CARRIER_TECHNOLOGY_LABEL = "RESTCLIENT"; + EVENT_PRODUCER_PLUGIN_CLASS = ApexRestClientProducer.class.getName(); + EVENT_CONSUMER_PLUGIN_CLASS = ApexRestClientConsumer.class.getName(); // Set the carrier technology properties for the web socket carrier technology - this.setLabel(RESTCLIENT_CARRIER_TECHNOLOGY_LABEL); - this.setEventProducerPluginClass(RESTCLIENT_EVENT_PRODUCER_PLUGIN_CLASS); - this.setEventConsumerPluginClass(RESTCLIENT_EVENT_CONSUMER_PLUGIN_CLASS); - } - - /** - * Check if http headers have been set for the REST request. - * - * @return true if headers have been set - */ - public boolean checkHttpHeadersSet() { - return httpHeaders != null && httpHeaders.length > 0; + this.setLabel(CARRIER_TECHNOLOGY_LABEL); + this.setEventProducerPluginClass(EVENT_PRODUCER_PLUGIN_CLASS); + this.setEventConsumerPluginClass(EVENT_CONSUMER_PLUGIN_CLASS); } - /** - * Gets the http headers for the REST request as a multivalued map. - * - * @return the headers - */ - public MultivaluedMap getHttpHeadersAsMultivaluedMap() { - if (httpHeaders == null) { - return null; - } - - // Load the HTTP headers into the map - MultivaluedMap httpHeaderMap = new MultivaluedHashMap<>(); - - for (String[] httpHeader : httpHeaders) { - httpHeaderMap.putSingle(httpHeader[0], httpHeader[1]); - } - - return httpHeaderMap; - } - - /** - * Sets the header for the REST request. - * - * @param httpHeaders the incoming HTTP headers - */ - public void setHttpHeaders(final String[][] httpHeaders) { - this.httpHeaders = httpHeaders; - } - - /** - * Get the tag for the REST Producer Properties. - * - * @return set of the tags - */ - public Set getKeysFromUrl() { - Matcher matcher = patternProperKey.matcher(getUrl()); - Set key = new HashSet<>(); - while (matcher.find()) { - key.add(matcher.group()); - } - return key; - } - /** - * {@inheritDoc}. - */ - @Override - public GroupValidationResult validate() { - GroupValidationResult result = super.validate(); - - result = validateUrl(result); - - result = validateHttpHeaders(result); - - return validateHttpCodeFilter(result); - } - - // @formatter:off - /** - * Validate the URL. - * - *

Checks: - * http://www.blah.com/{par1/somethingelse (Missing end tag) use {[^\\{}]*$ - * http://www.blah.com/{par1/{some}thingelse (Nested tag) use {[^}]*{ - * http://www.blah.com/{par1}/some}thingelse (Missing start tag1) use }[^{}]*.} - * http://www.blah.com/par1}/somethingelse (Missing start tag2) use }[^{}]*} - * http://www.blah.com/{}/somethingelse (Empty tag) use {[\s]*} - * @param result the result of the validation - */ - // @formatter:on - private GroupValidationResult validateUrl(final GroupValidationResult result) { - // Check if the URL has been set for event output - if (getUrl() == null) { - result.setResult("url", ValidationStatus.INVALID, "no URL has been set for event sending on REST client"); - return result; - } - - Matcher matcher = patternErrorKey.matcher(getUrl()); - if (matcher.find()) { - result.setResult("url", ValidationStatus.INVALID, - "no proper URL has been set for event sending on REST client"); - } - - return result; - } - - /** - * Validate the HTTP headers. - * - * @param result the result of the validation - */ - private GroupValidationResult validateHttpHeaders(final GroupValidationResult result) { - if (httpHeaders == null) { - return result; - } - - for (String[] httpHeader : httpHeaders) { - if (httpHeader == null) { - result.setResult(HTTP_HEADERS, ValidationStatus.INVALID, "HTTP header array entry is null"); - } else if (httpHeader.length != 2) { - result.setResult(HTTP_HEADERS, ValidationStatus.INVALID, - "HTTP header array entries must have one key and one value: " - + Arrays.deepToString(httpHeader)); - } else if (!ParameterValidationUtils.validateStringParameter(httpHeader[0])) { - result.setResult(HTTP_HEADERS, ValidationStatus.INVALID, - "HTTP header key is null or blank: " + Arrays.deepToString(httpHeader)); - } else if (!ParameterValidationUtils.validateStringParameter(httpHeader[1])) { - result.setResult(HTTP_HEADERS, ValidationStatus.INVALID, - "HTTP header value is null or blank: " + Arrays.deepToString(httpHeader)); - } - } - - return result; - } - - /** - * Validate the HTTP code filter. - * - * @param result the result of the validation - */ - public GroupValidationResult validateHttpCodeFilter(final GroupValidationResult result) { - if (httpCodeFilter == null) { - httpCodeFilter = DEFAULT_HTTP_CODE_FILTER; - - } else if (StringUtils.isBlank(httpCodeFilter)) { - result.setResult(HTTP_CODE_FILTER, ValidationStatus.INVALID, - "HTTP code filter must be specified as a three digit regular expression"); - } else { - try { - Pattern.compile(httpCodeFilter); - } catch (PatternSyntaxException pse) { - String message = - "Invalid HTTP code filter, the filter must be specified as a three digit regular expression: " - + pse.getMessage(); - result.setResult(HTTP_CODE_FILTER, ValidationStatus.INVALID, message); - LOGGER.debug(message, pse); - } - } - - return result; - } - - /** - * {@inheritDoc}. - */ - @Override - public String toString() { - return "RestClientCarrierTechnologyParameters [url=" + url + ", httpMethod=" + httpMethod + ", httpHeaders=" - + Arrays.deepToString(httpHeaders) + ", httpCodeFilter=" + httpCodeFilter + "]"; - } } diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restclient/src/test/java/org/onap/policy/apex/plugins/event/carrier/restclient/RestClientCarrierTechnologyParametersTest.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restclient/src/test/java/org/onap/policy/apex/plugins/event/carrier/restclient/RestClientCarrierTechnologyParametersTest.java index ef0384f9c..0e4ddd0a3 100644 --- a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restclient/src/test/java/org/onap/policy/apex/plugins/event/carrier/restclient/RestClientCarrierTechnologyParametersTest.java +++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restclient/src/test/java/org/onap/policy/apex/plugins/event/carrier/restclient/RestClientCarrierTechnologyParametersTest.java @@ -175,7 +175,7 @@ public class RestClientCarrierTechnologyParametersTest { rrctp.setHttpMethod(RestClientCarrierTechnologyParameters.HttpMethod.DELETE); assertEquals(RestClientCarrierTechnologyParameters.HttpMethod.DELETE, rrctp.getHttpMethod()); - assertEquals("RestClientCarrierTechnologyParameters " + assertEquals("RESTCLIENTCarrierTechnologyParameters " + "[url=http://some.where, httpMethod=DELETE, httpHeaders=[[aaa, bbb], [ccc, ddd]], " + "httpCodeFilter=[1-5][0][0-5]]", rrctp.toString()); } diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorCarrierTechnologyParameters.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorCarrierTechnologyParameters.java index e66ff608a..0d122c67b 100644 --- a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorCarrierTechnologyParameters.java +++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorCarrierTechnologyParameters.java @@ -34,7 +34,7 @@ import javax.ws.rs.core.MultivaluedMap; import lombok.Getter; import lombok.Setter; import org.apache.commons.lang3.StringUtils; -import org.onap.policy.apex.service.parameters.carriertechnology.CarrierTechnologyParameters; +import org.onap.policy.apex.service.parameters.carriertechnology.RestPluginCarrierTechnologyParameters; import org.onap.policy.common.parameters.GroupValidationResult; import org.onap.policy.common.parameters.ValidationStatus; import org.onap.policy.common.utils.validation.ParameterValidationUtils; @@ -63,25 +63,11 @@ import org.slf4j.LoggerFactory; //@formatter:on @Getter @Setter -public class RestRequestorCarrierTechnologyParameters extends CarrierTechnologyParameters { +public class RestRequestorCarrierTechnologyParameters extends RestPluginCarrierTechnologyParameters { // Get a reference to the logger private static final Logger LOGGER = LoggerFactory.getLogger(RestRequestorCarrierTechnologyParameters.class); - /** The supported HTTP methods. */ - public enum HttpMethod { - GET, PUT, POST, DELETE - } - - /** The label of this carrier technology. */ - public static final String RESTREQUESTOR_CARRIER_TECHNOLOGY_LABEL = "RESTREQUESTOR"; - - /** The producer plugin class for the REST carrier technology. */ - public static final String RESTREQUSTOR_EVENT_PRODUCER_PLUGIN_CLASS = - ApexRestRequestorProducer.class.getName(); - /** The consumer plugin class for the REST carrier technology. */ - public static final String RESTREQUSTOR_EVENT_CONSUMER_PLUGIN_CLASS = - ApexRestRequestorConsumer.class.getName(); /** The default HTTP method for request events. */ public static final HttpMethod DEFAULT_REQUESTOR_HTTP_METHOD = HttpMethod.GET; @@ -89,23 +75,6 @@ public class RestRequestorCarrierTechnologyParameters extends CarrierTechnologyP /** The default timeout for REST requests. */ public static final long DEFAULT_REST_REQUEST_TIMEOUT = 500; - /** The default HTTP code filter, allows 2xx HTTP codes through. */ - public static final String DEFAULT_HTTP_CODE_FILTER = "[2][0-9][0-9]"; - - // Commonly occurring strings - private static final String HTTP_HEADERS = "httpHeaders"; - private static final String HTTP_CODE_FILTER = "httpCodeFilter"; - - // Regular expression patterns for finding and checking keys in URLs - private static final Pattern patternProperKey = Pattern.compile("(?<=\\{)[^}]*(?=\\})"); - private static final Pattern patternErrorKey = - Pattern.compile("(\\{[^\\{}]*.?\\{)|(\\{[^\\{}]*$)|(\\}[^\\{}]*.?\\})|(^[^\\{}]*.?\\})|\\{\\s*\\}"); - - private String url = null; - private HttpMethod httpMethod = null; - private String[][] httpHeaders = null; - private String httpCodeFilter = DEFAULT_HTTP_CODE_FILTER; - /** * Constructor to create a REST carrier technology parameters instance and register the instance with the parameter * service. @@ -114,76 +83,13 @@ public class RestRequestorCarrierTechnologyParameters extends CarrierTechnologyP super(); // Set the carrier technology properties for the web socket carrier technology - this.setLabel(RESTREQUESTOR_CARRIER_TECHNOLOGY_LABEL); - this.setEventProducerPluginClass(RESTREQUSTOR_EVENT_PRODUCER_PLUGIN_CLASS); - this.setEventConsumerPluginClass(RESTREQUSTOR_EVENT_CONSUMER_PLUGIN_CLASS); - } - - /** - * Check if http headers have been set for the REST request. - * - * @return true if headers have beenset - */ - public boolean checkHttpHeadersSet() { - return httpHeaders != null && httpHeaders.length > 0; - } - - /** - * Gets the http headers for the REST request as a multivalued map. - * - * @return the headers - */ - public MultivaluedMap getHttpHeadersAsMultivaluedMap() { - if (httpHeaders == null) { - return null; - } - - // Load the HTTP headers into the map - MultivaluedMap httpHeaderMap = new MultivaluedHashMap<>(); - - for (String[] httpHeader : httpHeaders) { - httpHeaderMap.putSingle(httpHeader[0], httpHeader[1]); - } - - return httpHeaderMap; - } - - /** - * Sets the header for the REST request. - * - * @param httpHeaders the incoming HTTP headers - */ - public void setHttpHeaders(final String[][] httpHeaders) { - this.httpHeaders = httpHeaders; - } - - /** - * Get the tag for the REST Producer Properties. - * - * @return set of the tags - */ - public Set getKeysFromUrl() { - Matcher matcher = patternProperKey.matcher(getUrl()); - Set key = new HashSet<>(); - while (matcher.find()) { - key.add(matcher.group()); - } - return key; - } - - - /** - * {@inheritDoc}. - */ - @Override - public GroupValidationResult validate() { - GroupValidationResult result = super.validate(); - - result = validateUrl(result); - - result = validateHttpHeaders(result); - - return validateHttpCodeFilter(result); + CARRIER_TECHNOLOGY_LABEL = "RESTREQUESTOR"; + EVENT_PRODUCER_PLUGIN_CLASS = ApexRestRequestorProducer.class.getName(); + EVENT_CONSUMER_PLUGIN_CLASS = ApexRestRequestorConsumer.class.getName(); + // Set the carrier technology properties for the web socket carrier technology + this.setLabel(CARRIER_TECHNOLOGY_LABEL); + this.setEventProducerPluginClass(EVENT_PRODUCER_PLUGIN_CLASS); + this.setEventConsumerPluginClass(EVENT_CONSUMER_PLUGIN_CLASS); } // @formatter:off @@ -199,7 +105,8 @@ public class RestRequestorCarrierTechnologyParameters extends CarrierTechnologyP * @param result the result of the validation */ // @formatter:on - private GroupValidationResult validateUrl(final GroupValidationResult result) { + @Override + public GroupValidationResult validateUrl(final GroupValidationResult result) { // URL is only set on Requestor consumers if (getUrl() == null) { return result; @@ -213,69 +120,4 @@ public class RestRequestorCarrierTechnologyParameters extends CarrierTechnologyP return result; } - - /** - * Validate the HTTP headers. - * - * @param result the result of the validation - */ - private GroupValidationResult validateHttpHeaders(final GroupValidationResult result) { - if (httpHeaders == null) { - return result; - } - - for (String[] httpHeader : httpHeaders) { - if (httpHeader == null) { - result.setResult(HTTP_HEADERS, ValidationStatus.INVALID, "HTTP header array entry is null"); - } else if (httpHeader.length != 2) { - result.setResult(HTTP_HEADERS, ValidationStatus.INVALID, - "HTTP header array entries must have one key and one value: " - + Arrays.deepToString(httpHeader)); - } else if (!ParameterValidationUtils.validateStringParameter(httpHeader[0])) { - result.setResult(HTTP_HEADERS, ValidationStatus.INVALID, - "HTTP header key is null or blank: " + Arrays.deepToString(httpHeader)); - } else if (!ParameterValidationUtils.validateStringParameter(httpHeader[1])) { - result.setResult(HTTP_HEADERS, ValidationStatus.INVALID, - "HTTP header value is null or blank: " + Arrays.deepToString(httpHeader)); - } - } - - return result; - } - - /** - * Validate the HTTP code filter. - * - * @param result the result of the validation - */ - public GroupValidationResult validateHttpCodeFilter(final GroupValidationResult result) { - if (httpCodeFilter == null) { - httpCodeFilter = DEFAULT_HTTP_CODE_FILTER; - - } else if (StringUtils.isBlank(httpCodeFilter)) { - result.setResult(HTTP_CODE_FILTER, ValidationStatus.INVALID, - "HTTP code filter must be specified as a three digit regular expression"); - } else { - try { - Pattern.compile(httpCodeFilter); - } catch (PatternSyntaxException pse) { - String message = - "Invalid HTTP code filter, the filter must be specified as a three digit regular expression: " - + pse.getMessage(); - result.setResult(HTTP_CODE_FILTER, ValidationStatus.INVALID, message); - LOGGER.debug(message, pse); - } - } - - return result; - } - - /** - * {@inheritDoc}. - */ - @Override - public String toString() { - return "RESTRequestorCarrierTechnologyParameters [url=" + url + ", httpMethod=" + httpMethod + ", httpHeaders=" - + Arrays.deepToString(httpHeaders) + ", httpCodeFilter=" + httpCodeFilter + "]"; - } } diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorCarrierTechnologyParametersTest.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorCarrierTechnologyParametersTest.java index 96cf8490b..b9b997f09 100644 --- a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorCarrierTechnologyParametersTest.java +++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorCarrierTechnologyParametersTest.java @@ -162,7 +162,7 @@ public class RestRequestorCarrierTechnologyParametersTest { rrctp.setHttpMethod(RestRequestorCarrierTechnologyParameters.HttpMethod.DELETE); assertEquals(RestRequestorCarrierTechnologyParameters.HttpMethod.DELETE, rrctp.getHttpMethod()); - assertEquals("RESTRequestorCarrierTechnologyParameters " + assertEquals("RESTREQUESTORCarrierTechnologyParameters " + "[url=http://some.where, httpMethod=DELETE, httpHeaders=[[aaa, bbb], [ccc, ddd]]," + " httpCodeFilter=[1-5][0][0-5]]", rrctp.toString()); } diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/parameters/carriertechnology/RestPluginCarrierTechnologyParameters.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/parameters/carriertechnology/RestPluginCarrierTechnologyParameters.java new file mode 100644 index 000000000..f548f636a --- /dev/null +++ b/services/services-engine/src/main/java/org/onap/policy/apex/service/parameters/carriertechnology/RestPluginCarrierTechnologyParameters.java @@ -0,0 +1,277 @@ +/*- + * ============LICENSE_START======================================================= + * Copyright (C) 2016-2018 Ericsson. All rights reserved. + * Modifications Copyright (C) 2019 Nordix Foundation. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + * SPDX-License-Identifier: Apache-2.0 + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.apex.service.parameters.carriertechnology; + +import java.util.Arrays; +import java.util.HashSet; +import java.util.Set; +import java.util.regex.Matcher; +import java.util.regex.Pattern; +import java.util.regex.PatternSyntaxException; + +import javax.ws.rs.core.MultivaluedHashMap; +import javax.ws.rs.core.MultivaluedMap; + +import lombok.Getter; +import lombok.Setter; +import org.apache.commons.lang3.StringUtils; +import org.onap.policy.apex.service.parameters.carriertechnology.CarrierTechnologyParameters; +import org.onap.policy.common.parameters.GroupValidationResult; +import org.onap.policy.common.parameters.ValidationStatus; +import org.onap.policy.common.utils.validation.ParameterValidationUtils; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +// @formatter:off +/** + * Apex plugin parameters for REST as an event carrier technology with Apex. + * + *

The parameters for this plugin are: + *

    + *
  1. url: The URL that the Apex Rest client will connect to over REST for event reception or event sending. This + * parameter is mandatory. + *
  2. httpMethod: The HTTP method to use when sending events over REST, legal values are POST (default) and PUT. When + * receiving events, the REST client plugin always uses the HTTP GET method. + *
  3. httpHeaders, the HTTP headers to send on REST requests, optional parameter, defaults to none. + *
  4. httpCodeFilter: a regular expression filter for returned HTTP codes, if the returned HTTP code passes this + * filter, then the request is assumed to have succeeded by the plugin, optional, defaults to allowing 2xx codes + * through, that is a regular expression of "[2][0-9][0-9]" + *
+ * + * @author Ning Xi(ning.xi@ericsson.com) + */ +//@formatter:on +@Setter +@Getter +public class RestPluginCarrierTechnologyParameters extends CarrierTechnologyParameters { + // Get a reference to the logger + private static final Logger LOGGER = LoggerFactory.getLogger(RestPluginCarrierTechnologyParameters.class); + + /** The supported HTTP methods. */ + public enum HttpMethod { + GET, PUT, POST, DELETE + } + + /** The label of this carrier technology. */ + protected String CARRIER_TECHNOLOGY_LABEL; + + /** The producer plugin class for the REST carrier technology. */ + protected String EVENT_PRODUCER_PLUGIN_CLASS; + + /** The consumer plugin class for the REST carrier technology. */ + protected String EVENT_CONSUMER_PLUGIN_CLASS; + + /** The default HTTP code filter, allows 2xx HTTP codes through. */ + public static final String DEFAULT_HTTP_CODE_FILTER = "[2][0-9][0-9]"; + + // Commonly occurring strings + private static final String HTTP_HEADERS = "httpHeaders"; + private static final String HTTP_CODE_FILTER = "httpCodeFilter"; + + // Regular expression patterns for finding and checking keys in URLs + private static final Pattern patternProperKey = Pattern.compile("(?<=\\{)[^}]*(?=\\})"); + protected static final Pattern patternErrorKey = + Pattern.compile("(\\{[^\\{}]*.?\\{)|(\\{[^\\{}]*$)|(\\}[^\\{}]*.?\\})|(^[^\\{}]*.?\\})|\\{\\s*\\}"); + + //variable + protected String url = null; + protected HttpMethod httpMethod = null; + protected String[][] httpHeaders = null; + protected String httpCodeFilter = DEFAULT_HTTP_CODE_FILTER; + + /** + * Constructor to create a REST carrier technology parameters instance and register the instance with the parameter + * service. + */ + public RestPluginCarrierTechnologyParameters() { + super(); + + // Set the carrier technology properties for the web socket carrier technology + CARRIER_TECHNOLOGY_LABEL = "RESTPLUGIN"; + EVENT_PRODUCER_PLUGIN_CLASS = "PRODUCER"; + EVENT_CONSUMER_PLUGIN_CLASS = "CONSUMER"; + this.setLabel(CARRIER_TECHNOLOGY_LABEL); + this.setEventProducerPluginClass(EVENT_PRODUCER_PLUGIN_CLASS); + this.setEventConsumerPluginClass(EVENT_CONSUMER_PLUGIN_CLASS); + } + + /** + * Check if http headers have been set for the REST request. + * + * @return true if headers have been set + */ + public boolean checkHttpHeadersSet() { + return httpHeaders != null && httpHeaders.length > 0; + } + + /** + * Gets the http headers for the REST request as a multivalued map. + * + * @return the headers + */ + public MultivaluedMap getHttpHeadersAsMultivaluedMap() { + if (httpHeaders == null) { + return null; + } + + // Load the HTTP headers into the map + MultivaluedMap httpHeaderMap = new MultivaluedHashMap<>(); + + for (String[] httpHeader : httpHeaders) { + httpHeaderMap.putSingle(httpHeader[0], httpHeader[1]); + } + + return httpHeaderMap; + } + + /** + * Sets the header for the REST request. + * + * @param httpHeaders the incoming HTTP headers + */ + public void setHttpHeaders(final String[][] httpHeaders) { + this.httpHeaders = httpHeaders; + } + + /** + * Get the tag for the REST Producer Properties. + * + * @return set of the tags + */ + public Set getKeysFromUrl() { + Matcher matcher = patternProperKey.matcher(getUrl()); + Set key = new HashSet<>(); + while (matcher.find()) { + key.add(matcher.group()); + } + return key; + } + + /** + * {@inheritDoc}. + */ + @Override + public GroupValidationResult validate() { + GroupValidationResult result = super.validate(); + + result = validateUrl(result); + + result = validateHttpHeaders(result); + + return validateHttpCodeFilter(result); + } + + // @formatter:off + /** + * Validate the URL. + * + *

Checks: + * http://www.blah.com/{par1/somethingelse (Missing end tag) use {[^\\{}]*$ + * http://www.blah.com/{par1/{some}thingelse (Nested tag) use {[^}]*{ + * http://www.blah.com/{par1}/some}thingelse (Missing start tag1) use }[^{}]*.} + * http://www.blah.com/par1}/somethingelse (Missing start tag2) use }[^{}]*} + * http://www.blah.com/{}/somethingelse (Empty tag) use {[\s]*} + * @param result the result of the validation + */ + // @formatter:on + public GroupValidationResult validateUrl(final GroupValidationResult result) { + // Check if the URL has been set for event output + String URL_ERROR_MSG = "no URL has been set for event sending on " + CARRIER_TECHNOLOGY_LABEL; + if (getUrl() == null) { + result.setResult("url", ValidationStatus.INVALID, URL_ERROR_MSG); + return result; + } + + Matcher matcher = patternErrorKey.matcher(getUrl()); + if (matcher.find()) { + result.setResult("url", ValidationStatus.INVALID, + URL_ERROR_MSG); + } + + return result; + } + + /** + * Validate the HTTP headers. + * + * @param result the result of the validation + */ + private GroupValidationResult validateHttpHeaders(final GroupValidationResult result) { + if (httpHeaders == null) { + return result; + } + + for (String[] httpHeader : httpHeaders) { + if (httpHeader == null) { + result.setResult(HTTP_HEADERS, ValidationStatus.INVALID, "HTTP header array entry is null"); + } else if (httpHeader.length != 2) { + result.setResult(HTTP_HEADERS, ValidationStatus.INVALID, + "HTTP header array entries must have one key and one value: " + + Arrays.deepToString(httpHeader)); + } else if (!ParameterValidationUtils.validateStringParameter(httpHeader[0])) { + result.setResult(HTTP_HEADERS, ValidationStatus.INVALID, + "HTTP header key is null or blank: " + Arrays.deepToString(httpHeader)); + } else if (!ParameterValidationUtils.validateStringParameter(httpHeader[1])) { + result.setResult(HTTP_HEADERS, ValidationStatus.INVALID, + "HTTP header value is null or blank: " + Arrays.deepToString(httpHeader)); + } + } + + return result; + } + + /** + * Validate the HTTP code filter. + * + * @param result the result of the validation + */ + public GroupValidationResult validateHttpCodeFilter(final GroupValidationResult result) { + if (httpCodeFilter == null) { + httpCodeFilter = DEFAULT_HTTP_CODE_FILTER; + + } else if (StringUtils.isBlank(httpCodeFilter)) { + result.setResult(HTTP_CODE_FILTER, ValidationStatus.INVALID, + "HTTP code filter must be specified as a three digit regular expression"); + } else { + try { + Pattern.compile(httpCodeFilter); + } catch (PatternSyntaxException pse) { + String message = + "Invalid HTTP code filter, the filter must be specified as a three digit regular expression: " + + pse.getMessage(); + result.setResult(HTTP_CODE_FILTER, ValidationStatus.INVALID, message); + LOGGER.debug(message, pse); + } + } + + return result; + } + + /** + * {@inheritDoc}. + */ + @Override + public String toString() { + return CARRIER_TECHNOLOGY_LABEL +"CarrierTechnologyParameters [url=" + url + ", httpMethod=" + httpMethod + ", httpHeaders=" + + Arrays.deepToString(httpHeaders) + ", httpCodeFilter=" + httpCodeFilter + "]"; + } +} -- cgit 1.2.3-korg