resource-registry-client/src/main/java/org/gcube/informationsystem/resourceregistry/client/ResourceRegistryClientImpl....

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/**
*
*/
package org.gcube.informationsystem.resourceregistry.client;
import java.io.StringWriter;
import java.net.MalformedURLException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import org.gcube.informationsystem.impl.utils.ISMapper;
import org.gcube.informationsystem.model.ER;
import org.gcube.informationsystem.model.ISManageable;
import org.gcube.informationsystem.model.entity.Entity;
import org.gcube.informationsystem.model.entity.Resource;
import org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException;
import org.gcube.informationsystem.resourceregistry.api.exceptions.er.ERNotFoundException;
import org.gcube.informationsystem.resourceregistry.api.exceptions.query.InvalidQueryException;
import org.gcube.informationsystem.resourceregistry.api.exceptions.schema.SchemaNotFoundException;
import org.gcube.informationsystem.resourceregistry.api.rest.AccessPath;
import org.gcube.informationsystem.resourceregistry.api.rest.httputils.HTTPCall;
import org.gcube.informationsystem.resourceregistry.api.rest.httputils.HTTPCall.HTTPMETHOD;
import org.gcube.informationsystem.types.TypeBinder;
import org.gcube.informationsystem.types.TypeBinder.TypeDefinition;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author Luca Frosini (ISTI - CNR)
*/
public class ResourceRegistryClientImpl implements ResourceRegistryClient {
private static final Logger logger = LoggerFactory
.getLogger(ResourceRegistryClientImpl.class);
public static final String PATH_SEPARATOR = "/";
protected final String address;
protected HTTPCall httpCall;
public ResourceRegistryClientImpl(String address) {
this.address = address;
}
private HTTPCall getHTTPCall() throws MalformedURLException {
if(httpCall==null){
httpCall = new HTTPCall(address, ResourceRegistryClient.class.getSimpleName());
}
return httpCall;
}
@Override
public <ERType extends ER> void exists(Class<ERType> clazz, UUID uuid)
throws ERNotFoundException, ResourceRegistryException {
String type = clazz.getSimpleName();
try {
logger.info("Going to check if {} with UUID {} exists", type, uuid);
StringWriter stringWriter = new StringWriter();
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(AccessPath.ACCESS_PATH_PART);
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(AccessPath.INSTANCE_PATH_PART);
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(type);
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(uuid.toString());
HTTPCall httpCall = getHTTPCall();
httpCall.call(clazz, stringWriter.toString(), HTTPMETHOD.HEAD);
logger.debug("{} with UUID {} exists", type, uuid);
} catch (ResourceRegistryException e) {
throw e;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Override
public <ERType extends ER> ERType getInstance(Class<ERType> clazz, UUID uuid)
throws ERNotFoundException, ResourceRegistryException {
String type = clazz.getSimpleName();
try {
logger.info("Going to get {} with UUID {}", type, uuid);
StringWriter stringWriter = new StringWriter();
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(AccessPath.ACCESS_PATH_PART);
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(AccessPath.INSTANCE_PATH_PART);
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(type);
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(uuid.toString());
HTTPCall httpCall = getHTTPCall();
ERType erType = httpCall.call(clazz, stringWriter.toString(),
HTTPMETHOD.GET);
logger.debug("Got {} with UUID {} is {}", type, uuid, erType);
return erType;
} catch (ResourceRegistryException e) {
logger.error("Error while getting {} with UUID {}", type, uuid, e);
throw e;
} catch (Exception e) {
logger.error("Error while getting {} with UUID {}", type, uuid, e);
throw new RuntimeException(e);
}
}
@Override
public List<? extends Entity> getInstances(String type,
Boolean polymorphic) throws ResourceRegistryException {
try {
logger.info("Going to get all instances of {} ", type);
StringWriter stringWriter = new StringWriter();
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(AccessPath.ACCESS_PATH_PART);
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(AccessPath.INSTANCES_PATH_PART);
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(type);
Map<String, String> parameters = new HashMap<>();
parameters.put(AccessPath.POLYMORPHIC_PARAM, polymorphic.toString());
HTTPCall httpCall = getHTTPCall();
String ret = httpCall.call(String.class, stringWriter.toString(),
HTTPMETHOD.GET, parameters);
logger.debug("Got instances of {} are {}", type, ret);
return ISMapper.unmarshalList(Entity.class, ret);
} catch (ResourceRegistryException e) {
logger.error("Error while getting {} instances", type, e);
throw e;
} catch (Exception e) {
logger.error("Error while getting {} instances", type, e);
throw new RuntimeException(e);
}
}
@Override
public List<Resource> getInstancesFromEntity(
String relationType, Boolean polymorphic, UUID reference,
Direction direction) throws ResourceRegistryException {
try {
logger.info("Going to get all instances of {} from/to {}", relationType,
reference.toString());
StringWriter stringWriter = new StringWriter();
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(AccessPath.ACCESS_PATH_PART);
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(AccessPath.INSTANCES_PATH_PART);
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(relationType);
Map<String, String> parameters = new HashMap<>();
parameters.put(AccessPath.POLYMORPHIC_PARAM, polymorphic.toString());
parameters.put(AccessPath.REFERENCE, reference.toString());
parameters.put(AccessPath.DIRECTION, direction.toString());
HTTPCall httpCall = getHTTPCall();
String ret = httpCall.call(String.class, stringWriter.toString(), HTTPMETHOD.GET, parameters);
logger.debug("Got instances of {} from/to {} are {}", relationType,
reference.toString(), ret);
return ISMapper.unmarshalList(Resource.class, ret);
} catch (ResourceRegistryException e) {
logger.error("Error while getting instances of {} from/to {}", relationType, e);
throw e;
} catch (Exception e) {
logger.error("Error while getting instances of {} from/to {}", relationType, e);
throw new RuntimeException(e);
}
}
@Override
public <ISM extends ISManageable> List<TypeDefinition> getSchema(
Class<ISM> clazz, Boolean polymorphic)
throws SchemaNotFoundException, ResourceRegistryException {
String type = clazz.getSimpleName();
try {
logger.info("Going to get {} schema", type);
StringWriter stringWriter = new StringWriter();
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(AccessPath.ACCESS_PATH_PART);
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(AccessPath.SCHEMA_PATH_PART);
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(type);
Map<String, String> parameters = new HashMap<>();
parameters.put(AccessPath.POLYMORPHIC_PARAM, polymorphic.toString());
HTTPCall httpCall = getHTTPCall();
String schema = httpCall.call(String.class, stringWriter.toString(), HTTPMETHOD.GET, parameters);
logger.debug("Got schema for {} is {}", type, schema);
return TypeBinder.deserializeTypeDefinitions(schema);
} catch (ResourceRegistryException e) {
logger.error("Error while getting {}schema for {}",
polymorphic ? AccessPath.POLYMORPHIC_PARAM + " " : "",
type, e);
throw e;
} catch (Exception e) {
logger.error("Error while getting {}schema for {}",
polymorphic ? AccessPath.POLYMORPHIC_PARAM + " " : "",
type, e);
throw new RuntimeException(e);
}
}
@Override
public String query(String query, int limit, String fetchPlan)
throws InvalidQueryException, ResourceRegistryException {
try {
logger.debug("Going to query. {}", query);
StringWriter stringWriter = new StringWriter();
stringWriter.append(PATH_SEPARATOR);
stringWriter.append(AccessPath.ACCESS_PATH_PART);
Map<String, String> parameters = new HashMap<>();
parameters.put(AccessPath.QUERY_PARAM, query);
if(limit<=0){
limit = AccessPath.DEFAULT_LIMIT;
}
parameters.put(AccessPath.LIMIT_PARAM, Integer.toString(limit));
if (fetchPlan != null) {
parameters.put(AccessPath.FETCH_PLAN_PARAM, fetchPlan);
}
HTTPCall httpCall = getHTTPCall();
String ret = httpCall.call(String.class, stringWriter.toString(), HTTPMETHOD.GET, parameters);
logger.debug("Query result is {}", ret);
return ret;
} catch (ResourceRegistryException e) {
logger.error("Error while querying", e);
throw e;
} catch (Exception e) {
logger.error("Error while querying", e);
throw new RuntimeException(e);
}
}
}