Java tutorial
/* * Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. * * WSO2 Inc. licenses this file to you 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. * */ package org.wso2.carbon.governance.registry.extensions.utils; import com.google.gson.Gson; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.NameValuePair; import org.apache.http.client.HttpClient; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.message.BasicNameValuePair; import org.apache.http.protocol.HttpContext; import org.apache.http.util.EntityUtils; import org.json.JSONObject; import org.wso2.carbon.governance.api.exception.GovernanceException; import org.wso2.carbon.registry.core.exceptions.RegistryException; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.util.ArrayList; import java.util.List; import static org.wso2.carbon.governance.registry.extensions.executors.utils.ExecutorConstants.*; /** * Created by a548347 on 05/07/2014. * This class will be util class for APIM related stuff. */ public final class APIUtils { /** * This method will authenticate the user name and password mentioned in life cycle against APIM. * * @param httpContext * @param apimEndpoint * @param apimUsername * @param apimPassword */ public static void authenticateAPIM(HttpContext httpContext, String apimEndpoint, String apimUsername, String apimPassword) throws GovernanceException { String loginEP = apimEndpoint + Constants.APIM_LOGIN_ENDPOINT; try { // create a post request to addAPI. HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost(loginEP); // Request parameters and other properties. List<NameValuePair> params = new ArrayList<NameValuePair>(Constants.APIM_PARAMETER_COUNT); params.add(new BasicNameValuePair(API_ACTION, API_LOGIN_ACTION)); params.add(new BasicNameValuePair(API_USERNAME, apimUsername)); params.add(new BasicNameValuePair(API_PASSWORD, apimPassword)); httppost.setEntity(new UrlEncodedFormEntity(params, Constants.UTF_8_ENCODE)); HttpResponse response = httpclient.execute(httppost, httpContext); HttpEntity entity = response.getEntity(); String responseString = EntityUtils.toString(entity, Constants.UTF_8_ENCODE); if (response.getStatusLine().getStatusCode() != Constants.SUCCESS_RESPONSE_CODE) { throw new RegistryException(" Authentication with APIM failed: HTTP error code : " + response.getStatusLine().getStatusCode()); } Gson gson = new Gson(); ResponseAPIM responseAPIM = gson.fromJson(responseString, ResponseAPIM.class); if (responseAPIM.getError().equalsIgnoreCase("true")) { throw new GovernanceException( "Error occurred in validating the user. Please check the credentials"); } } catch (Exception e) { throw new GovernanceException("Authentication failed with API Manager. Please check the credentials", e); } } /** * This method will authenticate the user name and password mentioned in life cycle against APIM 2.0.0. * * @param httpContext * @param apimEndpoint * @param apimUsername * @param apimPassword */ public static String authenticateAPIM_2(HttpContext httpContext, String apimEndpoint, String apimUsername, String apimPassword) throws GovernanceException { String loginEP = apimEndpoint + Constants.APIM_2_0_0_LOGIN_ENDPOINT; try { // create a post request to addAPI. HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost(loginEP); // Request parameters and other properties. List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair(API_USERNAME, apimUsername)); params.add(new BasicNameValuePair(API_PASSWORD, apimPassword)); httppost.setEntity(new UrlEncodedFormEntity(params, Constants.UTF_8_ENCODE)); HttpResponse response = httpclient.execute(httppost, httpContext); HttpEntity entity = response.getEntity(); String responseString = EntityUtils.toString(entity, Constants.UTF_8_ENCODE); if (response.getStatusLine().getStatusCode() != Constants.SUCCESS_RESPONSE_CODE) { throw new RegistryException(" Authentication with APIM failed: HTTP error code : " + response.getStatusLine().getStatusCode()); } JSONObject obj = new JSONObject(responseString); return obj.getJSONObject("data").getString("sessionId"); } catch (Exception e) { throw new GovernanceException("Authentication failed with API Manager. Please check the credentials", e); } } /** * This method will publish api to APIM. * @param httpclient * @param httppost * @param params * @param httpContext * @return */ public static ResponseAPIM callAPIMToPublishAPI(HttpClient httpclient, HttpPost httppost, List<NameValuePair> params, HttpContext httpContext) throws GovernanceException { try { httppost.setEntity(new UrlEncodedFormEntity(params, Constants.UTF_8_ENCODE)); HttpResponse response = httpclient.execute(httppost, httpContext); if (response.getStatusLine().getStatusCode() != Constants.SUCCESS_RESPONSE_CODE) { // 200 is the successful response status code throw new RegistryException( "Failed : HTTP error code : " + response.getStatusLine().getStatusCode()); } HttpEntity entity = response.getEntity(); String responseString = EntityUtils.toString(entity, Constants.UTF_8_ENCODE); Gson gson = new Gson(); return gson.fromJson(responseString, ResponseAPIM.class); } catch (java.net.SocketTimeoutException e) { throw new GovernanceException("Connection timed out, Please check the network availability", e); } catch (UnsupportedEncodingException e) { throw new GovernanceException("Unsupported encode exception.", e); } catch (IOException e) { throw new GovernanceException("IO Exception occurred.", e); } catch (Exception e) { throw new GovernanceException(e.getMessage(), e); } } /** * This method will publish api to APIM 2.0.0. * @param httpclient * @param httppost * @param params * @param httpContext * @return */ public static ResponseAPIM callAPIMToPublishAPI2(HttpClient httpclient, HttpPost httppost, List<NameValuePair> params, HttpContext httpContext) throws GovernanceException { try { httppost.setEntity(new UrlEncodedFormEntity(params, Constants.UTF_8_ENCODE)); HttpResponse response = httpclient.execute(httppost, httpContext); if (response.getStatusLine().getStatusCode() != Constants.CREATED_RESPONSE_CODE) { // 201 is the successful response status code throw new RegistryException( "Failed : HTTP error code : " + response.getStatusLine().getStatusCode()); } HttpEntity entity = response.getEntity(); String responseString = EntityUtils.toString(entity, Constants.UTF_8_ENCODE); return null; } catch (java.net.SocketTimeoutException e) { throw new GovernanceException("Connection timed out, Please check the network availability", e); } catch (UnsupportedEncodingException e) { throw new GovernanceException("Unsupported encode exception.", e); } catch (IOException e) { throw new GovernanceException("IO Exception occurred.", e); } catch (Exception e) { throw new GovernanceException(e.getMessage(), e); } } }