testFTP server UNC error in module 12 DIY (Fundamentals) not working

Question

I am getting an error in the Fundamentals Module 12 DIY exercise. In the starter solution there is a test.xml configuration provided including a testFTP flow that is testing the in memory FTP server. It is configured to run on a scheduler basis.

I am getting an exception on this when running the project and wondering if there is some configuration that is missing or if there is a problem with the mock FTP server implementation provided. As per the console trace below - the mock server is up and running just not accepting read operations. (Why is it looking for a Windows UNC on an FTP server?)

I am running on version 4 with the latest Anypoint Studio (7.3.1)

 INFO  2018-11-24 05:08:54,474 [Thread-16] [event: ] org.mockftpserver.fake.FakeFtpServer: Connection accepted from host /127.0.0.1
 INFO  2018-11-24 05:08:54,475 [Thread-23] [event: ] org.mockftpserver.core.command.ConnectCommandHandler: Sending reply [220 Service ready for new user. (MockFtpServer 2.7.1; see http://mockftpserver.sourceforge.net)]
 INFO  2018-11-24 05:08:54,495 [Thread-23] [event: ] org.mockftpserver.core.session.DefaultSession: Received command: [USER user]
 INFO  2018-11-24 05:08:54,495 [Thread-23] [event: ] org.mockftpserver.fake.command.UserCommandHandler: Sending reply [331 User name okay, need password.]
 INFO  2018-11-24 05:08:54,515 [Thread-23] [event: ] org.mockftpserver.core.session.DefaultSession: Received command: [PASS password]
 INFO  2018-11-24 05:08:54,515 [Thread-23] [event: ] org.mockftpserver.fake.command.PassCommandHandler: Sending reply [230 User logged in, proceed.]
 INFO  2018-11-24 05:08:54,535 [Thread-23] [event: ] org.mockftpserver.core.session.DefaultSession: Received command: [PWD]
 INFO  2018-11-24 05:08:54,535 [Thread-23] [event: ] org.mockftpserver.fake.command.PwdCommandHandler: Sending reply [257 "/data" is current directory.] args=[/data]
 INFO  2018-11-24 05:08:54,557 [Thread-23] [event: ] org.mockftpserver.core.session.DefaultSession: Received command: [TYPE A]
 INFO  2018-11-24 05:08:54,557 [Thread-23] [event: ] org.mockftpserver.fake.command.TypeCommandHandler: Sending reply [200 TYPE completed.]
 ERROR 2018-11-24 05:08:54,559 [[MuleRuntime].io.10: [connectors-mod12-various-systems-starter].testFTP.BLOCKING @1ea10cc] [event: 0-b6952d70-efe1-11e8-8a68-9c2a70475729] org.mule.runtime.core.internal.exception.OnErrorPropagateHandler: 
 ********************************************************************************
 Message               : UNC path is missing sharename: /\/data.
 Element               : testFTP/processors/0 @ connectors-mod12-various-systems-starter:test.xml:17 (FTP)
 Element XML           : <ftp:read doc:name="FTP" doc:id="f6242b03-5c82-4801-9184-58fe4a958ba8" path="test/testfile.csv" config-ref="Partner2_FTP_Config"></ftp:read>
 Error type            : MULE:UNKNOWN
 --------------------------------------------------------------------------------
 Root Exception stack trace:
 java.nio.file.InvalidPathException: UNC path is missing sharename: /\/data
     at sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:118)
     at sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:77)
     at sun.nio.fs.WindowsPath.parse(WindowsPath.java:94)
     at sun.nio.fs.WindowsFileSystem.getPath(WindowsFileSystem.java:255)
     at java.nio.file.Paths.get(Paths.java:84)
     at org.mule.extension.ftp.internal.connection.FtpFileSystem.changeToBaseDir(FtpFileSystem.java:262)
     at org.mule.extension.file.common.api.BaseFileSystemOperations.doRead(BaseFileSystemOperations.java:191)
     at org.mule.extension.ftp.internal.FtpOperations.read(FtpOperations.java:109)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

(@gopale - I see you have been helping with some other issues on Module 10 and 11...)

Answer 1

Nov 25, 2018 at 03:59 AM, gopale answered with:

It seems like the project was built using an older version of Studio and Mule server, and it seemed to work just fine with that version. It's quite possible that when the project is loaded into new Studio, libraries used in this version could be breaking it. I will pass this along, but since this is a DIY exercises, I am not sure you will get any support on this. I will ask someone to at least look into the error related to UNC and see if there is a fix for this version of Studio.

-gopal

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Answer 2

Hi,

I'm currently having a similar issue. I am encountering the ff error:

 Message               : UNC path is missing sharename: /\/data/.
 Element               : mealnGo/processors/0 @ connectors-mod12-various-systems-part1-solution:mealngo.xml:10 (FTP)
 Element XML           : <ftp:write doc:name="FTP" doc:id="bf44d5d6-0a06-4704-bed8-6c425d2a797f" config-ref="Partner2_FTP_Config" path="#['MULEBANK-gc-' ++ vars.creationDateUnixEpoch ++ '.csv']">
                         <ftp:content>#[output application/csv --- payload]</ftp:content>
                         </ftp:write>
 Error type            : MULE:UNKNOWN
 --------------------------------------------------------------------------------
 Root Exception stack trace:
 java.nio.file.InvalidPathException: UNC path is missing sharename: /\/data/

Any updates on how this is resolved? For reference, the root in the config is defined as follows:

 partner2:
   name: "Meals n Go"
   queue: "mealsngo"
   ftp:
     host: "localhost"
     port: "9178"
     username: "user"
     password: "password"
     root: "/data/"

Thanks, lian

testFTP server UNC error in module 12 DIY (Fundamentals) not working

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