351 lines
12 KiB
Java
351 lines
12 KiB
Java
package org.gcube.informationsystem.resourceregistry.context;
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import java.io.IOException;
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import java.net.HttpURLConnection;
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import java.util.List;
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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.gxhttp.reference.GXConnection;
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import org.gcube.common.gxhttp.request.GXHTTPStringRequest;
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import org.gcube.informationsystem.context.reference.entities.Context;
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import org.gcube.informationsystem.model.impl.properties.HeaderImpl;
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import org.gcube.informationsystem.model.reference.properties.Header;
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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.ResourceRegistryException;
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import org.gcube.informationsystem.resourceregistry.api.exceptions.context.ContextAlreadyPresentException;
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import org.gcube.informationsystem.resourceregistry.api.exceptions.context.ContextNotFoundException;
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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.utils.ElementMapper;
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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 implements ResourceRegistryContextClient {
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private static final Logger logger = LoggerFactory.getLogger(ResourceRegistryContextClientImpl.class);
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protected final String address;
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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();
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}
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};
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public ResourceRegistryContextClientImpl(String address) {
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this.address = address;
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ContextCache contextCache = ContextCache.getInstance();
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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 contextCache = ContextCache.getInstance();
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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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protected String internalCreate(Context context) throws ContextAlreadyPresentException, ResourceRegistryException {
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try {
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Header header = context.getHeader();
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if(header == null) {
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header = new HeaderImpl(UUID.randomUUID());
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context.setHeader(header);
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}
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UUID uuid = context.getHeader().getUUID();
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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 = GXHTTPStringRequest.newRequest(address);
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gxHTTPStringRequest.from(ResourceRegistryContextClient.class.getSimpleName());
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gxHTTPStringRequest.header("Accept", GXConnection.APPLICATION_JSON_CHARSET_UTF_8);
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gxHTTPStringRequest.header("Content-type", 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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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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@Override
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public Context read(Context context) throws ContextNotFoundException, ResourceRegistryException {
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return read(context.getHeader().getUUID());
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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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ContextCache contextCache = ContextCache.getInstance();
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Context context = ContextCache.getInstance().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.getHeader().getUUID());
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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 = ResourceRegistryContextClientFactory.getCurrentContextFullName();
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ContextCache contextCache = ContextCache.getInstance();
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UUID uuid = contextCache.getUUIDByFullName(contextFullName);
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Context context = null;
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if(uuid == null) {
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String contextJson = readFromServer(AccessPath.CURRENT_CONTEXT);
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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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contextCache.cleanCache();
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contextCache.refreshContextsIfNeeded();
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Context c = contextCache.getContextByUUID(context.getHeader().getUUID());
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if(c!=null){
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context = c;
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}else {
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logger.error("Current Context is {}. It is possibile to get it from the server but not from the cache. This is very strange and should not occur.", contextFullName);
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}
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}else {
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context = contextCache.getContextByUUID(uuid);
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}
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return context;
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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 = GXHTTPStringRequest.newRequest(address);
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gxHTTPStringRequest.from(ResourceRegistryContextClient.class.getSimpleName());
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gxHTTPStringRequest.header("Accept", 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.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.getHeader().getUUID();
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GXHTTPStringRequest gxHTTPStringRequest = GXHTTPStringRequest.newRequest(address);
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gxHTTPStringRequest.from(ResourceRegistryContextClient.class.getSimpleName());
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gxHTTPStringRequest.header("Accept", GXConnection.APPLICATION_JSON_CHARSET_UTF_8);
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gxHTTPStringRequest.header("Content-type", 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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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.getHeader().getUUID());
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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 = GXHTTPStringRequest.newRequest(address);
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gxHTTPStringRequest.from(ResourceRegistryContextClient.class.getSimpleName());
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gxHTTPStringRequest.header("Accept", 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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ContextCache contextCache = ContextCache.getInstance();
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contextCache.cleanCache();
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contextCache.refreshContextsIfNeeded();
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}catch (Exception e) {
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}
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}
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}
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protected List<Context> getAllContextFromServer() throws ResourceRegistryException {
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try {
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logger.trace("Going to read {} with UUID {}", Context.NAME);
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GXHTTPStringRequest gxHTTPStringRequest = GXHTTPStringRequest.newRequest(address);
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gxHTTPStringRequest.from(ResourceRegistryContextClient.class.getSimpleName());
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gxHTTPStringRequest.header("Accept", GXConnection.APPLICATION_JSON_CHARSET_UTF_8);
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gxHTTPStringRequest.path(ContextPath.CONTEXTS_PATH_PART);
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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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ContextCache contextCache = ContextCache.getInstance();
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return contextCache.getContexts();
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}
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}
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