com.amazonaws.services.simpleworkflow.flow.WorkflowClientFactoryExternalBase Maven / Gradle / Ivy

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The Amazon Web Services SDK for Java provides Java APIs for building software on AWS' cost-effective, scalable, and reliable infrastructure products. The AWS Java SDK allows developers to code against APIs for all of Amazon's infrastructure web services (Amazon S3, Amazon EC2, Amazon SQS, Amazon Relational Database Service, Amazon AutoScaling, etc).

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/*
 * Copyright 2012-2014 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"). You may not
 * use this file except in compliance with the License. A copy of the License is
 * located at
 * 
 * http://aws.amazon.com/apache2.0
 * 
 * or in the "license" file accompanying this file. This file 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.amazonaws.services.simpleworkflow.flow;

import com.amazonaws.services.simpleworkflow.AmazonSimpleWorkflow;
import com.amazonaws.services.simpleworkflow.flow.generic.GenericWorkflowClientExternal;
import com.amazonaws.services.simpleworkflow.flow.worker.GenericWorkflowClientExternalImpl;
import com.amazonaws.services.simpleworkflow.model.WorkflowExecution;

public abstract class WorkflowClientFactoryExternalBase implements WorkflowClientFactoryExternal {

    private GenericWorkflowClientExternal genericClient;

    private DataConverter dataConverter = new com.amazonaws.services.simpleworkflow.flow.JsonDataConverter();

    private StartWorkflowOptions startWorkflowOptions = new StartWorkflowOptions();

    public WorkflowClientFactoryExternalBase(AmazonSimpleWorkflow service, String domain) {
        this(new GenericWorkflowClientExternalImpl(service, domain));
    }

    public WorkflowClientFactoryExternalBase() {
        this(null);
    }

    public WorkflowClientFactoryExternalBase(GenericWorkflowClientExternal genericClient) {
        this.genericClient = genericClient;
    }

    @Override
    public GenericWorkflowClientExternal getGenericClient() {
        return genericClient;
    }

    public void setGenericClient(GenericWorkflowClientExternal genericClient) {
        this.genericClient = genericClient;
    }

    @Override
    public DataConverter getDataConverter() {
        return dataConverter;
    }

    public void setDataConverter(DataConverter dataConverter) {
        this.dataConverter = dataConverter;
    }

    @Override
    public StartWorkflowOptions getStartWorkflowOptions() {
        return startWorkflowOptions;
    }

    public void setStartWorkflowOptions(StartWorkflowOptions startWorkflowOptions) {
        this.startWorkflowOptions = startWorkflowOptions;
    }

    @Override
    public T getClient() {
        checkGenericClient();
        String workflowId = genericClient.generateUniqueId();
        WorkflowExecution workflowExecution = new WorkflowExecution().withWorkflowId(workflowId);
        return getClient(workflowExecution, startWorkflowOptions, dataConverter, genericClient);
    }

    @Override
    public T getClient(String workflowId) {
        if (workflowId == null || workflowId.isEmpty()) {
            throw new IllegalArgumentException("workflowId");
        }
        WorkflowExecution workflowExecution = new WorkflowExecution().withWorkflowId(workflowId);
        return getClient(workflowExecution, startWorkflowOptions, dataConverter, genericClient);
    }

    @Override
    public T getClient(WorkflowExecution workflowExecution) {
        return getClient(workflowExecution, startWorkflowOptions, dataConverter, genericClient);
    }

    @Override
    public T getClient(WorkflowExecution workflowExecution, StartWorkflowOptions options) {
        return getClient(workflowExecution, options, dataConverter, genericClient);
    }

    @Override
    public T getClient(WorkflowExecution workflowExecution, StartWorkflowOptions options, DataConverter dataConverter) {
        return getClient(workflowExecution, options, dataConverter, genericClient);
    }

    @Override
    public T getClient(WorkflowExecution workflowExecution, StartWorkflowOptions options, DataConverter dataConverter,
            GenericWorkflowClientExternal genericClient) {
        checkGenericClient();
        return createClientInstance(workflowExecution, options, dataConverter, genericClient);
    }

    private void checkGenericClient() {
        if (genericClient == null) {
            throw new IllegalStateException("The required property genericClient is null. "
                    + "It could be caused by instantiating the factory through the default constructor instead of the one "
                    + "that takes service and domain arguments.");
        }
    }

    protected abstract T createClientInstance(WorkflowExecution workflowExecution, StartWorkflowOptions options,
            DataConverter dataConverter, GenericWorkflowClientExternal genericClient);

}