473 lines
16 KiB
Java
473 lines
16 KiB
Java
package org.gcube.informationsystem.resourceregistry.contexts;
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import java.io.IOException;
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import java.io.UnsupportedEncodingException;
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import java.net.HttpURLConnection;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.UUID;
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import org.gcube.com.fasterxml.jackson.core.JsonProcessingException;
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import org.gcube.common.context.ContextUtility;
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import org.gcube.common.gxhttp.reference.GXConnection;
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import org.gcube.common.gxhttp.request.GXHTTPStringRequest;
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import org.gcube.common.http.GXHTTPUtility;
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import org.gcube.informationsystem.contexts.reference.entities.Context;
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import org.gcube.informationsystem.resourceregistry.api.contexts.ContextCache;
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import org.gcube.informationsystem.resourceregistry.api.contexts.ContextCacheRenewal;
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import org.gcube.informationsystem.resourceregistry.api.exceptions.NotFoundException;
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import org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException;
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import org.gcube.informationsystem.resourceregistry.api.exceptions.contexts.ContextAlreadyPresentException;
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import org.gcube.informationsystem.resourceregistry.api.exceptions.contexts.ContextNotFoundException;
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import org.gcube.informationsystem.resourceregistry.api.request.BaseRequestInfo;
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import org.gcube.informationsystem.resourceregistry.api.rest.AccessPath;
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import org.gcube.informationsystem.resourceregistry.api.rest.ContextPath;
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import org.gcube.informationsystem.resourceregistry.api.rest.httputils.HTTPUtility;
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import org.gcube.informationsystem.serialization.ElementMapper;
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import org.gcube.informationsystem.utils.UUIDManager;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* @author Luca Frosini (ISTI - CNR)
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*/
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public class ResourceRegistryContextClientImpl extends BaseRequestInfo implements ResourceRegistryContextClient {
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private static final Logger logger = LoggerFactory.getLogger(ResourceRegistryContextClientImpl.class);
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private static final String ACCEPT_HTTP_HEADER_KEY = "Accept";
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private static final String CONTENT_TYPE_HTTP_HEADER_KEY = "Content-Type";
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protected final String address;
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protected Map<String, String> headers;
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protected ContextCache contextCache;
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private void addOptionalQueryParameters(Map<String,String> queryParams) throws UnsupportedEncodingException {
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addIncludeMeta(queryParams);
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}
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private GXHTTPStringRequest includeAdditionalQueryParameters(GXHTTPStringRequest gxHTTPStringRequest) throws UnsupportedEncodingException{
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Map<String,String> queryParams = new HashMap<>();
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return includeAdditionalQueryParameters(gxHTTPStringRequest, queryParams);
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}
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private GXHTTPStringRequest includeAdditionalQueryParameters(GXHTTPStringRequest gxHTTPStringRequest, Map<String,String> queryParams) throws UnsupportedEncodingException{
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if(queryParams==null) {
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queryParams = new HashMap<>();
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}
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addOptionalQueryParameters(queryParams);
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return gxHTTPStringRequest.queryParams(queryParams);
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}
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private void addIncludeMeta(Map<String,String> queryParams) throws UnsupportedEncodingException{
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addIncludeMeta(queryParams, includeMeta);
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}
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private void addIncludeMeta(Map<String,String> queryParams, boolean includeMeta) throws UnsupportedEncodingException{
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if(includeMeta) {
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queryParams.put(AccessPath.INCLUDE_META_QUERY_PARAMETER, Boolean.toString(includeMeta));
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}
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}
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/*
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private void addOffset(Map<String,String> queryParams) throws UnsupportedEncodingException{
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addOffset(queryParams, offset);
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}
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*/
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private void addOffset(Map<String,String> queryParams, Integer offset) throws UnsupportedEncodingException{
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if(offset!=null) {
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queryParams.put(AccessPath.OFFSET_QUERY_PARAMETER, offset.toString());
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}
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}
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/*
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private void addLimit(Map<String,String> queryParams) throws UnsupportedEncodingException{
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addLimit(queryParams, limit);
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}
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*/
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private void addLimit(Map<String,String> queryParams, Integer limit) throws UnsupportedEncodingException{
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if(limit!=null) {
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queryParams.put(AccessPath.LIMIT_QUERY_PARAMETER, limit.toString());
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}
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}
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protected ContextCacheRenewal contextCacheRenewal = new ContextCacheRenewal() {
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@Override
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public List<Context> renew() throws ResourceRegistryException {
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return getAllContextFromServer(true, 0, BaseRequestInfo.UNBOUNDED_LIMIT);
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}
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};
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@Override
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public void addHeader(String name, String value) {
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headers.put(name, value);
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}
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protected GXHTTPStringRequest getGXHTTPStringRequest() {
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GXHTTPStringRequest gxHTTPStringRequest = GXHTTPUtility.getGXHTTPStringRequest(address);
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gxHTTPStringRequest.from(this.getClass().getSimpleName());
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for(String name : headers.keySet()) {
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gxHTTPStringRequest.header(name, headers.get(name));
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}
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return gxHTTPStringRequest;
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}
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public ResourceRegistryContextClientImpl(String address) {
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this(address, true);
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}
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public ResourceRegistryContextClientImpl(String address, boolean sharedContextCache) {
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this.address = address;
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this.headers = new HashMap<>();
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this.includeMeta = false;
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if(sharedContextCache) {
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contextCache = ContextCache.getInstance();
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}else {
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contextCache = new ContextCache();
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}
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contextCache.setContextCacheRenewal(contextCacheRenewal);
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}
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private void forceCacheRefresh() {
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try {
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contextCache.cleanCache();
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contextCache.refreshContextsIfNeeded();
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}catch (Exception e) {
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logger.warn("Unable to force cache refresh.", e);
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}
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}
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/**
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* It reads all the contexts from server.
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* The cache used for contexts is bypassed and not updated.
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* @return All Contexts read from server
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* @throws ResourceRegistryException
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*/
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public List<Context> getAllContextFromServer() throws ResourceRegistryException {
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return getAllContextFromServer(includeMeta, offset, limit);
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}
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protected List<Context> getAllContextFromServer(boolean includeMeta, Integer offset, Integer limit) throws ResourceRegistryException {
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try {
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logger.info("Going to read all {}s", Context.NAME);
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GXHTTPStringRequest gxHTTPStringRequest = getGXHTTPStringRequest();
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gxHTTPStringRequest.header(ACCEPT_HTTP_HEADER_KEY, GXConnection.APPLICATION_JSON_CHARSET_UTF_8);
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gxHTTPStringRequest.path(ContextPath.CONTEXTS_PATH_PART);
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Map<String,String> parameters = new HashMap<>();
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addIncludeMeta(parameters, includeMeta);
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addOffset(parameters, offset);
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addLimit(parameters, limit);
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gxHTTPStringRequest.queryParams(parameters);
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HttpURLConnection httpURLConnection = gxHTTPStringRequest.get();
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String all = HTTPUtility.getResponse(String.class, httpURLConnection);
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logger.debug("Got contexts are {}", Context.NAME, all);
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return ElementMapper.unmarshalList(Context.class, all);
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} catch(ResourceRegistryException e) {
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// logger.trace("Error Creating {}", facet, e);
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throw e;
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} catch(Exception e) {
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// logger.trace("Error Creating {}", facet, e);
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throw new RuntimeException(e);
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}
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}
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@Override
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public List<Context> all() throws ResourceRegistryException {
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return contextCache.getContexts();
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}
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@Override
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public ContextCache getContextCache() {
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return contextCache;
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}
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protected String internalCreate(Context context) throws ContextAlreadyPresentException, ResourceRegistryException {
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try {
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UUID uuid = context.getID();
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if(uuid == null) {
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uuid = UUIDManager.getInstance().generateValidUUID();
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context.setID(uuid);
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}
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String contextString = ElementMapper.marshal(context);
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logger.trace("Going to create {}", contextString);
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GXHTTPStringRequest gxHTTPStringRequest = getGXHTTPStringRequest();
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gxHTTPStringRequest.header(ACCEPT_HTTP_HEADER_KEY, GXConnection.APPLICATION_JSON_CHARSET_UTF_8);
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gxHTTPStringRequest.header(CONTENT_TYPE_HTTP_HEADER_KEY, GXConnection.APPLICATION_JSON_CHARSET_UTF_8);
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gxHTTPStringRequest.path(ContextPath.CONTEXTS_PATH_PART);
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gxHTTPStringRequest.path(uuid.toString());
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includeAdditionalQueryParameters(gxHTTPStringRequest);
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HttpURLConnection httpURLConnection = gxHTTPStringRequest.put(contextString);
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String c = HTTPUtility.getResponse(String.class, httpURLConnection);
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forceCacheRefresh();
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logger.trace("{} successfully created", c);
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return c;
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} catch(ResourceRegistryException e) {
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// logger.trace("Error Creating {}", facet, e);
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throw e;
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} catch(Exception e) {
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// logger.trace("Error Creating {}", facet, e);
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throw new RuntimeException(e);
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}
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}
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@Override
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public Context create(Context context) throws ContextAlreadyPresentException, ResourceRegistryException {
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try {
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String res = internalCreate(context);
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return ElementMapper.unmarshal(Context.class, res);
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} catch(ResourceRegistryException e) {
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// logger.trace("Error Creating {}", facet, e);
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throw e;
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} catch(Exception e) {
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// logger.trace("Error Creating {}", facet, e);
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throw new RuntimeException(e);
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}
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}
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@Override
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public String create(String context) throws ContextAlreadyPresentException, ResourceRegistryException {
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try {
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Context c = ElementMapper.unmarshal(Context.class, context);
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return internalCreate(c);
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} catch(ResourceRegistryException e) {
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// logger.trace("Error Creating {}", facet, e);
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throw e;
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} catch(Exception e) {
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// logger.trace("Error Creating {}", facet, e);
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throw new RuntimeException(e);
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}
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}
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public boolean existFromServer(String uuid) throws ContextNotFoundException, ResourceRegistryException {
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try {
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logger.trace("Going to read {} with UUID {}", Context.NAME, uuid);
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GXHTTPStringRequest gxHTTPStringRequest = getGXHTTPStringRequest();
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gxHTTPStringRequest.header(ACCEPT_HTTP_HEADER_KEY, GXConnection.APPLICATION_JSON_CHARSET_UTF_8);
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gxHTTPStringRequest.path(ContextPath.CONTEXTS_PATH_PART);
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gxHTTPStringRequest.path(uuid);
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HttpURLConnection httpURLConnection = gxHTTPStringRequest.head();
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HTTPUtility.getResponse(String.class, httpURLConnection);
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return true;
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} catch (NotFoundException e) {
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return false;
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} catch(ResourceRegistryException e) {
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// logger.trace("Error Creating {}", facet, e);
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throw e;
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} catch(Exception e) {
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// logger.trace("Error Creating {}", facet, e);
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throw new RuntimeException(e);
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}
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}
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@Override
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public boolean exist(String uuid) throws ResourceRegistryException {
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return exist(UUID.fromString(uuid));
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}
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@Override
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public boolean exist(UUID uuid) throws ResourceRegistryException {
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try {
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read(uuid);
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return true;
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}catch (ContextNotFoundException e) {
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return false;
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}
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}
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@Override
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public Context read(Context context) throws ContextNotFoundException, ResourceRegistryException {
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return read(context.getID());
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}
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@Override
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public Context read(UUID uuid) throws ContextNotFoundException, ResourceRegistryException {
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Context context = contextCache.getContextByUUID(uuid);;
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if(context == null) {
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String contextJson = readFromServer(uuid.toString());
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try {
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context = ElementMapper.unmarshal(Context.class, contextJson);
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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forceCacheRefresh();
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Context c = contextCache.getContextByUUID(context.getID());
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if(c!=null){
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context = c;
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}else {
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logger.error("Context with UUID {} is {}. It is possibile to get it from the server but not from the cache. This is very strange and should not occur.", uuid, context);
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}
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}
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return context;
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}
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@Override
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public Context readCurrentContext() throws ContextNotFoundException, ResourceRegistryException {
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String contextFullName = ContextUtility.getCurrentContextFullName();
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UUID uuid = contextCache.getUUIDByFullName(contextFullName);
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return read(uuid);
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}
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@Override
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public String read(String uuid) throws ContextNotFoundException, ResourceRegistryException {
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try {
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return ElementMapper.marshal(read(UUID.fromString(uuid)));
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} catch (ContextNotFoundException e) {
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throw e;
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} catch (JsonProcessingException e) {
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throw new RuntimeException(e);
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} catch (ResourceRegistryException e) {
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throw e;
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}
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}
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public String readFromServer(String uuid) throws ContextNotFoundException, ResourceRegistryException {
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try {
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logger.trace("Going to read {} with UUID {}", Context.NAME, uuid);
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GXHTTPStringRequest gxHTTPStringRequest = getGXHTTPStringRequest();
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gxHTTPStringRequest.header(ACCEPT_HTTP_HEADER_KEY, GXConnection.APPLICATION_JSON_CHARSET_UTF_8);
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gxHTTPStringRequest.path(ContextPath.CONTEXTS_PATH_PART);
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gxHTTPStringRequest.path(uuid);
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includeAdditionalQueryParameters(gxHTTPStringRequest);
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HttpURLConnection httpURLConnection = gxHTTPStringRequest.get();
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String c = HTTPUtility.getResponse(String.class, httpURLConnection);
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logger.debug("Got {} is {}", Context.NAME, c);
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return c;
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} catch(ResourceRegistryException e) {
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// logger.trace("Error Creating {}", facet, e);
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throw e;
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} catch(Exception e) {
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// logger.trace("Error Creating {}", facet, e);
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throw new RuntimeException(e);
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}
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}
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public String internalUpdate(Context context) throws ContextNotFoundException, ResourceRegistryException {
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try {
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String contextString = ElementMapper.marshal(context);
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logger.trace("Going to update {}", contextString);
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UUID uuid = context.getID();
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GXHTTPStringRequest gxHTTPStringRequest = getGXHTTPStringRequest();
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gxHTTPStringRequest.header(ACCEPT_HTTP_HEADER_KEY, GXConnection.APPLICATION_JSON_CHARSET_UTF_8);
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gxHTTPStringRequest.header(CONTENT_TYPE_HTTP_HEADER_KEY, GXConnection.APPLICATION_JSON_CHARSET_UTF_8);
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gxHTTPStringRequest.path(ContextPath.CONTEXTS_PATH_PART);
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gxHTTPStringRequest.path(uuid.toString());
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includeAdditionalQueryParameters(gxHTTPStringRequest);
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HttpURLConnection httpURLConnection = gxHTTPStringRequest.put(contextString);
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String c = HTTPUtility.getResponse(String.class, httpURLConnection);
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forceCacheRefresh();
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logger.trace("{} successfully updated", c);
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return c;
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} catch(ResourceRegistryException e) {
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// logger.trace("Error Creating {}", facet, e);
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throw e;
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} catch(Exception e) {
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// logger.trace("Error Creating {}", facet, e);
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throw new RuntimeException(e);
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}
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}
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@Override
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public Context update(Context context) throws ContextNotFoundException, ResourceRegistryException {
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try {
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String res = internalUpdate(context);
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return ElementMapper.unmarshal(Context.class, res);
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} catch(ResourceRegistryException e) {
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// logger.trace("Error Updating {}", facet, e);
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throw e;
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} catch(Exception e) {
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// logger.trace("Error Updating {}", facet, e);
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throw new RuntimeException(e);
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}
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}
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@Override
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public String update(String context) throws ContextNotFoundException, ResourceRegistryException {
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try {
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Context c = ElementMapper.unmarshal(Context.class, context);
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return internalUpdate(c);
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} catch(ResourceRegistryException e) {
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// logger.trace("Error Updating {}", facet, e);
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throw e;
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} catch(Exception e) {
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// logger.trace("Error Updating {}", facet, e);
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throw new RuntimeException(e);
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}
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}
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@Override
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public boolean delete(Context context) throws ContextNotFoundException, ResourceRegistryException {
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return delete(context.getID());
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}
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@Override
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public boolean delete(UUID uuid) throws ContextNotFoundException, ResourceRegistryException {
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return delete(uuid.toString());
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}
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@Override
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public boolean delete(String uuid) throws ContextNotFoundException, ResourceRegistryException {
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try {
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logger.trace("Going to delete {} with UUID {}", Context.NAME, uuid);
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GXHTTPStringRequest gxHTTPStringRequest = getGXHTTPStringRequest();
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gxHTTPStringRequest.header(ACCEPT_HTTP_HEADER_KEY, GXConnection.APPLICATION_JSON_CHARSET_UTF_8);
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gxHTTPStringRequest.path(ContextPath.CONTEXTS_PATH_PART);
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gxHTTPStringRequest.path(uuid);
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HttpURLConnection httpURLConnection = gxHTTPStringRequest.delete();
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HTTPUtility.getResponse(String.class, httpURLConnection);
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boolean deleted = true;
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logger.info("{} with UUID {} {}", Context.NAME, uuid,
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deleted ? " successfully deleted" : "was NOT deleted");
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return deleted;
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} catch(ResourceRegistryException e) {
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// logger.trace("Error Creating {}", facet, e);
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throw e;
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} catch(Exception e) {
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// logger.trace("Error Creating {}", facet, e);
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throw new RuntimeException(e);
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}finally {
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try {
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forceCacheRefresh();
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}catch (Exception e) {
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}
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}
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}
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}
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