Mule File Inbound to HTTP Outbound - mule

Question

I have a case where I need to poll a directory on my file system. Each file that is added to that directory needs to be posted to an HTTP endpoint.
The HTTP endpoint is available on "/rest/latest/file". Using postman, I've verified that the REST call works with the following settings:
POST
basic auth
form-data:
key = file
value = Selected a file from my file system (using a dialog)
My mule flow currently looks like this:
<file:connector name="File" autoDelete="true" streaming="true" validateConnections="true" moveToPattern="#[message.inboundProperties['originalFilename']].backup" moveToDirectory="src/main/resources/output" doc:name="File"/>
<flow name="importdataqualityresultsFlow1" doc:name="importdataqualityresultsFlow1">
<file:inbound-endpoint path="src/main/resources/input" responseTimeout="10000" doc:name="File"/>
<set-payload value="#[['file' :#[message.inboundAttachments['text.txt']]]]" doc:name="Set Payload"/>
<http:outbound-endpoint exchange-pattern="request-response" host="localhost" port="80" path="rest/latest/file" method="POST" user="Admin" password="admin" contentType="application/form-data" doc:name="HTTP"/>
</flow>
I can tell in my application logs that the user logs in using basic auth, after which I get a stack trace.
Any help / pointers would be greatly appreciated.

Answer 1

You need to create a map payload with the form fields:
<flow name="importdataqualityresultsFlow1">
<file:inbound-endpoint path="src/main/resources/input" />
<object-to-string-transformer />
<set-payload value="#[['file': message.payload]]" />
<http:outbound-endpoint exchange-pattern="request-response" host="localhost" port="80" path="rest/latest/file" method="POST" user="Admin" password="admin" contentType="application/form-data" />
</flow>