io.knotx.adapter.action.http.impl.HttpActionAdapterProxyImpl.java Source code

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Here is the source code for io.knotx.adapter.action.http.impl.HttpActionAdapterProxyImpl.java

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/*
 * Copyright (C) 2016 Cognifide Limited
 *
 * 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 io.knotx.adapter.action.http.impl;

import io.knotx.adapter.AbstractAdapterProxy;
import io.knotx.adapter.common.http.HttpAdapterConfiguration;
import io.knotx.adapter.common.http.HttpClientFacade;
import io.knotx.dataobjects.AdapterRequest;
import io.knotx.dataobjects.AdapterResponse;
import io.knotx.dataobjects.ClientResponse;
import io.netty.handler.codec.http.HttpResponseStatus;
import io.vertx.core.buffer.Buffer;
import io.vertx.core.http.HttpClientOptions;
import io.vertx.core.http.HttpMethod;
import io.vertx.core.json.JsonObject;
import io.vertx.rxjava.core.Vertx;
import io.vertx.rxjava.core.http.HttpClient;
import rx.Observable;

public class HttpActionAdapterProxyImpl extends AbstractAdapterProxy {

    private HttpClientFacade httpClientFacade;

    public HttpActionAdapterProxyImpl(Vertx vertx, HttpAdapterConfiguration configuration) {
        this.httpClientFacade = new HttpClientFacade(getHttpClient(vertx, configuration),
                configuration.getServices());
    }

    @Override
    protected Observable<AdapterResponse> processRequest(AdapterRequest request) {
        return httpClientFacade.process(request, HttpMethod.POST).map(this::prepareResponse);
    }

    private HttpClient getHttpClient(Vertx vertx, HttpAdapterConfiguration configuration) {
        JsonObject clientOptions = configuration.getClientOptions();
        return clientOptions.isEmpty() ? vertx.createHttpClient()
                : vertx.createHttpClient(new HttpClientOptions(clientOptions));
    }

    private AdapterResponse prepareResponse(ClientResponse response) {
        AdapterResponse result = new AdapterResponse();

        if (response.getStatusCode() == HttpResponseStatus.OK.code()) {
            if (isJsonBody(response.getBody())
                    && response.getBody().toJsonObject().containsKey("validationErrors")) {
                result.setSignal("error");
            } else {
                result.setSignal("success");
            }
        }
        result.setResponse(response);

        return result;
    }

    private boolean isJsonBody(Buffer bodyBuffer) {
        String body = bodyBuffer.toString().trim();
        return body.charAt(0) == '{' && body.charAt(body.length() - 1) == '}';
    }
}