tech.sirwellington.alchemy.http.Step4Impl Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of alchemy-http Show documentation

Part of the Alchemy Collection. REST without the MESS. Makes it dead-easy to call RESTful Web Services in Java. It is designed for interactions with APIs written in REST and JSON.

There is a newer version: 3.4.1

Show newest version

/*
 * Copyright 2015 SirWellington Tech.
 *
 * 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 tech.sirwellington.alchemy.http;

import java.net.URL;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import tech.sirwellington.alchemy.annotations.designs.StepMachineDesign;
import tech.sirwellington.alchemy.http.exceptions.AlchemyHttpException;

import static tech.sirwellington.alchemy.annotations.designs.StepMachineDesign.Role.STEP;
import static tech.sirwellington.alchemy.arguments.Arguments.checkThat;
import static tech.sirwellington.alchemy.arguments.assertions.Assertions.notNull;
import static tech.sirwellington.alchemy.http.HttpAssertions.validResponseClass;

/**
 *
 * @author SirWellington
 */
@StepMachineDesign(role = STEP)
final class Step4Impl implements AlchemyRequest.Step4
{

    private final static Logger LOG = LoggerFactory.getLogger(Step4Impl.class);

    private final AlchemyHttpStateMachine stateMachine;
    private final HttpRequest request;
    private final Class classOfResponseType;

    Step4Impl(AlchemyHttpStateMachine stateMachine, HttpRequest request, Class classOfResponseType)
    {
        checkThat(stateMachine, request, classOfResponseType)
                .are(notNull());
        
        checkThat(classOfResponseType)
                .is(validResponseClass());
        
        this.stateMachine = stateMachine;
        this.request = request;
        this.classOfResponseType = classOfResponseType;
    }

    @Override
    public ResponseType at(URL url) throws AlchemyHttpException
    {
        checkThat(url)
                .usingMessage("missing url")
                .is(notNull());

        HttpRequest newRequest = HttpRequest.Builder.from(request)
                .usingUrl(url)
                .build();

        return stateMachine.executeSync(newRequest, classOfResponseType);
    }

    @Override
    public AlchemyRequest.Step5 onSuccess(AlchemyRequest.OnSuccess onSuccessCallback)
    {
        checkThat(onSuccessCallback)
                .usingMessage("callback cannot be null")
                .is(notNull());

        return stateMachine.jumpToStep5(request, classOfResponseType, onSuccessCallback);
    }

    @Override
    public String toString()
    {
        return "Step4Impl{" + "stateMachine=" + stateMachine + ", request=" + request + ", classOfResponseType=" + classOfResponseType + '}';
    }

}