从S3存储桶子文件夹中获取文件并处理Mule中的文件

时间:2017-01-11 22:06:38

标签: csv for-loop amazon-s3 mule anypoint-studio

我在名为“test-files”的S3存储桶中有以下文件夹结构:

pending-files/products
pending-files/prices

每个文件夹包含许多小型CSV文件,我想在一次调用中检索它们,然后处理For Each循环中的每个文件,其中包含一个Choice组件,用于根据文件夹名称重定向有效负载,例如: “产品”或“价格”。

我使用列表对象来检索文件,并且能够检索所有文件,但列表中包含该文件夹的条目,并且由于该文件夹不是有效的CSV文件,For Each将无法验证,并且还会失败空文件检查,因为大小将为0。

我该怎么做?

XML工作流程:

<?xml version="1.0" encoding="UTF-8"?>

<mule xmlns:tracking="http://www.mulesoft.org/schema/mule/ee/tracking" xmlns:dw="http://www.mulesoft.org/schema/mule/ee/dw" xmlns:metadata="http://www.mulesoft.org/schema/mule/metadata" xmlns:http="http://www.mulesoft.org/schema/mule/http"
    xmlns:file="http://www.mulesoft.org/schema/mule/file"
    xmlns:s3="http://www.mulesoft.org/schema/mule/s3" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
    xmlns:spring="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd
http://www.mulesoft.org/schema/mule/file http://www.mulesoft.org/schema/mule/file/current/mule-file.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
http://www.mulesoft.org/schema/mule/s3 http://www.mulesoft.org/schema/mule/s3/current/mule-s3.xsd
http://www.mulesoft.org/schema/mule/ee/dw http://www.mulesoft.org/schema/mule/ee/dw/current/dw.xsd
http://www.mulesoft.org/schema/mule/ee/tracking http://www.mulesoft.org/schema/mule/ee/tracking/current/mule-tracking-ee.xsd">

<flow name="listobjects">
        <poll doc:name="Poll">
            <fixed-frequency-scheduler frequency="1000" timeUnit="HOURS"/>
            <s3:list-objects config-ref="Amazon_S3__Configuration" bucketName="test-files" prefix="pending-files/" maxKeys="5" doc:name="Amazon S3" delimiter="/" marker="pending-files/"/>
        </poll>
    <foreach collection="#[payload.objectSummaries]" doc:name="For Each">
            <logger message="#[payload.getKey()]" level="INFO" doc:name="Logger"/>
            <s3:get-object-content config-ref="Amazon_S3__Configuration" bucketName="test-file-drop" key="#[payload.getKey()]" mimeType="application/csv" doc:name="Amazon S3"/>
            <choice doc:name="Choice">
                <when expression="">
                    <flow-ref name="csvToMongodbFlow" doc:name="csvToMongodbFlow"/>
                </when>
                <otherwise>
                    <logger message="#['*************Missed*****************']" level="INFO" doc:name="Logger"/>
                </otherwise>
            </choice>

    </foreach>
        <logger message="#['\nCompleted']" level="INFO" doc:name="Logger"/>
</flow>

</mule>

0 个答案:

没有答案
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