Mule - Send SFTP outbound message after Collection Split - mule

Question

I am using collection-splitter to split my List. Now how should I set the payload to SFTP outbound-endpoint.
<sftp:inbound-endpoint connector-ref="sftp-inbound" host="${SFTP_HOST}" port="${SFTP_PORT}"
path="/files/" user="${SFTP_USER}" password="${SFTP_PASS}"
responseTimeout="10000" pollingFrequency="30000" fileAge="20000" sizeCheckWaitTime="5000"
archiveDir="/files/archive/" doc:name="SFTP" >
<file:filename-regex-filter pattern="Test(.*).zip" caseSensitive="true"/>
</sftp:inbound-endpoint>
<set-variable variableName="regexVal" value="${REGEX}" doc:name="Variable"/>
<set-variable variableName="sourceFileName" value="#[flowVars.originalFilename]" doc:name="Variable"/>
<custom-transformer name="zipTxt" class="com.mst.transform.UnzipTransformer" doc:name="Java" mimeType="image/gif">
<spring:property name="filenamePattern" value="*.csv,*.txt" />
</custom-transformer>
<set-variable variableName="fileContents" value="#[payload]" />
<collection-splitter enableCorrelation="IF_NOT_SET" />
<logger message="#[payload]" level="INFO" doc:name="Logger"/>
<sftp:outbound-endpoint connector-ref="sftp-inbound"
host="${SFTP_HOST}" port="${SFTP_PORT}"
path="/files/" user="${SFTP_USER}" password="${SFTP_PASS}"
responseTimeout="10000" doc:name="SFTP"
exchange-pattern="one-way"/>
</flow>

Answer 1

If your payload before collection splitter is list of objects that can be consumed by SFTP outbound endpoint like InputStream, then after splitter, you can wrap logger, sftp inside processor-chain. Splitter will send each object one-by-one to processor chain. SFTP should be able to write it if its an InputSream.
<collection-splitter enableCorrelation="IF_NOT_SET" />
<processor-chain doc:name="Processor Chain">
<logger message="#[payload]" level="INFO" doc:name="Logger"/>
<sftp:outbound-endpoint connector-ref="sftp-inbound"
host="${SFTP_HOST}" port="${SFTP_PORT}"
path="/files/" user="${SFTP_USER}" password="${SFTP_PASS}"
responseTimeout="10000" doc:name="SFTP"
exchange-pattern="one-way"/>
</processor-chain>
You wouldn't need processor-chain if you just want to put one processor (eg. SFTP) after splitter.
If this doesn't work, then please add error details to question.