Java tutorial
// ============================================================================ // // Copyright (C) 2006-2017 Talend Inc. - www.talend.com // // This source code is available under agreement available at // %InstallDIR%\features\org.talend.rcp.branding.%PRODUCTNAME%\%PRODUCTNAME%license.txt // // You should have received a copy of the agreement // along with this program; if not, write to Talend SA // 9 rue Pages 92150 Suresnes, France // // ============================================================================ package org.talend.dataprofiler.ecos.service; import java.io.StringReader; import java.util.ArrayList; import java.util.Collection; import java.util.Collections; import java.util.Comparator; import java.util.List; import java.util.Map; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.apache.commons.beanutils.BeanUtils; import org.apache.commons.collections.map.MultiValueMap; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.NameValuePair; import org.apache.commons.httpclient.methods.GetMethod; import org.apache.commons.httpclient.methods.PostMethod; import org.apache.commons.lang.StringUtils; import org.apache.log4j.Logger; import org.codehaus.jackson.JsonFactory; import org.codehaus.jackson.map.JavaTypeMapper; import org.osgi.framework.Version; import org.talend.dataprofiler.ecos.model.IEcosCategory; import org.talend.dataprofiler.ecos.model.RevisionInfo; import org.talend.dataprofiler.ecos.model.VersionInfo; import org.talend.dataprofiler.ecos.model.impl.EcosCategory; import org.talend.dataprofiler.ecos.model.impl.Revision; import org.talend.dataprofiler.ecos.proxy.EcosystemProxyAdapter; /** * DOC bZhou class global comment. Detailled comment */ public abstract class EcosystemService { protected static Logger log = Logger.getLogger(EcosystemService.class); public final static String VERSION_LIST_URL = "http://talendforge.org/exchange/top/api/get_version_list.php"; //$NON-NLS-1$ public final static String REVISION_LIST_URL = "http://talendforge.org/exchange/top/api/get_revision_list.php"; //$NON-NLS-1$ private final static String CATEGORY_LIST_URL = "http://talendforge.org/exchange/top/api/get_category_list.php";//$NON-NLS-1$ private static MultiValueMap versionMap = new MultiValueMap(); private final static int TIMEOUT = 1000000; public static String[] getBranch(String version) throws Exception { String mainVersion = getMainVersion(version); if (versionMap.isEmpty()) { getVersionList(); } Collection<String> branch = versionMap.getCollection(mainVersion); return branch == null ? null : branch.toArray(new String[branch.size()]); } public static String getMainVersion(String version) { if (version == null) { return version; } Pattern pattern = Pattern.compile("(\\d+\\.\\d+).*"); //$NON-NLS-1$ Matcher matcher = pattern.matcher(version); String resultVersion = version; if (matcher.matches()) { resultVersion = matcher.group(1); } return resultVersion; } @SuppressWarnings("unchecked") public static String[] getVersionList() throws Exception { versionMap.clear(); try { String jsonContent = sendGetRequest(VERSION_LIST_URL); List<VersionInfo> list = parseJsonObject(jsonContent, VersionInfo.class); Pattern pattern = Pattern.compile("(\\d+\\.\\d+).*"); //$NON-NLS-1$ for (VersionInfo info : list) { String name = info.getName(); Matcher matcher = pattern.matcher(name); if (matcher.matches()) { versionMap.put(matcher.group(1), String.valueOf(info.getId())); } } // sort version List<String> versions = new ArrayList<String>(versionMap.keySet()); Collections.sort(versions, new Comparator<String>() { @Override public int compare(String o1, String o2) { Version ver1 = new Version(o1); Version ver2 = new Version(o2); return ver2.compareTo(ver1); } }); return versions.toArray(new String[versions.size()]); } catch (Exception e) { throw e; } } public static <T> List<T> parseJsonObject(String jsonContent, Class<T> clazz) throws Exception { // need factory for creating parser to use JsonFactory jf = new JsonFactory(); if (jsonContent == null || clazz == null) { return new ArrayList<T>(); } List<?> result = (List<?>) new JavaTypeMapper().read(jf.createJsonParser(new StringReader(jsonContent))); List<T> objList = new ArrayList<T>(result.size()); for (int i = 0; i < result.size(); i++) { T obj = clazz.newInstance(); Object source = result.get(i); BeanUtils.copyProperties(obj, source); objList.add(obj); } return objList; } public static String sendGetRequest(String urlAddress) throws Exception { HttpClient httpclient = new HttpClient(); // adapt proxy to http client. EcosystemProxyAdapter.adapt(httpclient, urlAddress); GetMethod getMethod = new GetMethod(urlAddress); getMethod.getParams().setSoTimeout(TIMEOUT); httpclient.executeMethod(getMethod); String response = getMethod.getResponseBodyAsString(); getMethod.releaseConnection(); return response; } public static String sendPostRequest(String urlAddress, Map<String, String> parameters) throws Exception { HttpClient httpclient = new HttpClient(); // adapt proxy to http client. EcosystemProxyAdapter.adapt(httpclient, urlAddress); PostMethod postMethod = new PostMethod(urlAddress); postMethod.getParams().setSoTimeout(TIMEOUT); if (parameters != null) { NameValuePair[] postData = new NameValuePair[parameters.size()]; int i = 0; for (String key : parameters.keySet()) { String value = parameters.get(key); postData[i++] = new NameValuePair(key, value); } postMethod.addParameters(postData); } httpclient.executeMethod(postMethod); String response = postMethod.getResponseBodyAsString(); postMethod.releaseConnection(); return response; } /** * Return true if revision1 is newer than revision2. * * @param revision1 * @param revision2 * @return */ public static boolean isRevisionNewerThan(Revision revision1, Revision revision2) { String[] rev1 = revision1.getName().split("\\."); //$NON-NLS-1$ String[] rev2 = revision2.getName().split("\\."); //$NON-NLS-1$ for (int i = 0; i < rev1.length && i < rev2.length; i++) { int a = Integer.parseInt(rev1[i]); int b = Integer.parseInt(rev2[i]); if (a == b) { continue; } else { return a > b; } } // the two revision has different length, the longer one is newer return rev1.length > rev2.length; } public static List<IEcosCategory> getCategoryList(String version) throws Exception { String jsonContent = sendGetRequest(CATEGORY_LIST_URL); List<EcosCategory> categorys = parseJsonObject(jsonContent, EcosCategory.class); if (categorys != null) { for (EcosCategory category : categorys) { category.setVersion(version); } } else { categorys = Collections.emptyList(); } // MOD yyi 2010-11-29 15271: svn project can't load exchange nodes List<IEcosCategory> iCategorys = new ArrayList<IEcosCategory>(); for (EcosCategory ecosCategory : categorys) { iCategorys.add(ecosCategory); } // ~15271 return iCategorys; } public static List<RevisionInfo> getRevisionList(String category, String version) throws Exception { StringBuffer url = new StringBuffer(); url.append(REVISION_LIST_URL).append("?categories=").append(category).append("&version="); //$NON-NLS-1$ //$NON-NLS-2$ String[] branch = getBranch(version); if (branch != null) { url.append(StringUtils.join(branch, ",")); //$NON-NLS-1$ String jsonContent = sendGetRequest(url.toString()); if (StringUtils.isNotEmpty(jsonContent)) { return parseJsonObject(jsonContent, RevisionInfo.class); } } return new ArrayList<RevisionInfo>(); } }