/**
* Copyright 2017 Hortonworks.
* <p>
* Licensed 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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 com.hortonworks.registries.model.client;
import org.glassfish.jersey.client.ClientConfig;
import org.glassfish.jersey.media.multipart.MultiPartFeature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.core.Response;
import static javax.ws.rs.core.Response.Status.OK;
/**
* Client class for accessing the MLModelRegistry Service APIs.
*/
public final class MLModelRegistryClient {
private static final Logger LOG = LoggerFactory.getLogger(MLModelRegistryClient.class);
private final String modelRegistryURL;
private final Client client;
public MLModelRegistryClient(String catalogURL) {
this(catalogURL, ClientBuilder.newClient(new ClientConfig()));
}
public MLModelRegistryClient(String catalogURL, Client client) {
this.modelRegistryURL = String.join("/", catalogURL, "ml", "models");
this.client = client;
client.register(MultiPartFeature.class);
}
public String getMLModelContents(String modelName) {
try {
Response response = client.target(String.format("%s/%s/%s", modelRegistryURL, "pmml", modelName)).request().get();
if (response.getStatus() != OK.getStatusCode()) {
throw new RuntimeException(
String.format("Error occurred while getting the response %s", response.getStatus()));
} else {
return response.readEntity(String.class);
}
} catch (Exception exception) {
LOG.error(String.format("An error was thrown while reading the pmml file contents for %s", modelName),
exception);
throw new RuntimeException(exception);
}
}
}