org.streampipes.manager.execution.http.HttpRequestBuilder Maven / Gradle / Ivy
/*
* Copyright 2018 FZI Forschungszentrum Informatik
*
* 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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 org.streampipes.manager.execution.http;
import com.google.gson.Gson;
import com.google.gson.JsonSyntaxException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.fluent.Request;
import org.apache.http.client.fluent.Response;
import org.apache.http.entity.ContentType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.streampipes.commons.Utils;
import org.streampipes.model.base.NamedStreamPipesEntity;
import org.streampipes.model.client.pipeline.PipelineElementStatus;
import org.streampipes.serializers.jsonld.JsonLdTransformer;
import java.io.IOException;
public class HttpRequestBuilder {
private NamedStreamPipesEntity payload;
private String belongsTo;
private final static Logger LOG = LoggerFactory.getLogger(HttpRequestBuilder.class);
public HttpRequestBuilder(NamedStreamPipesEntity payload, String belongsTo) {
this.payload = payload;
this.belongsTo = belongsTo;
}
public PipelineElementStatus invoke() {
LOG.info("Invoking element: " + belongsTo);
try {
Response httpResp = Request.Post(belongsTo).bodyString(jsonLd(), ContentType.APPLICATION_JSON).connectTimeout(10000).execute();
return handleResponse(httpResp);
} catch (Exception e) {
LOG.error(e.getMessage());
return new PipelineElementStatus(belongsTo, payload.getName(), false, e.getMessage());
}
}
public PipelineElementStatus detach() {
try {
Response httpResp = Request.Delete(belongsTo).connectTimeout(10000).execute();
return handleResponse(httpResp);
} catch (Exception e) {
LOG.error("Could not stop pipeline " + belongsTo, e.getMessage());
return new PipelineElementStatus(belongsTo, payload.getName(), false, e.getMessage());
}
}
private PipelineElementStatus handleResponse(Response httpResp) throws JsonSyntaxException, ClientProtocolException, IOException {
String resp = httpResp.returnContent().asString();
org.streampipes.model.Response streamPipesResp = new Gson().fromJson(resp, org.streampipes.model.Response.class);
return convert(streamPipesResp);
}
private String jsonLd() throws Exception {
return Utils.asString(new JsonLdTransformer().toJsonLd(payload));
}
private PipelineElementStatus convert(org.streampipes.model.Response response) {
return new PipelineElementStatus(belongsTo, payload.getName(), response.isSuccess(), response.getOptionalMessage());
}
}