Why is microservice able to load 'txt' files from subdirectory but not ".mat" files?
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consider this function loadFile.m:
function w = loadFile()
readlines("subdirectory/txtfile.txt")
load('subdirectory\someMatFile.mat')
w = 1;
end
Which I compiled using:
compiler.build.productionServerArchive
With options set to Include both files in subdirectory as 'Additional Files'. Then I compiled the function to a microservice using compiler.package.microserviceDockerImage.
The issue is - When I start the microservice as a docker container, the function is only able to read from the .txt file in the subdirectory, and not load the '.mat'. This Issue occurs only when loading mat file from subdirectory. if it is located in the same directory as function when compiling, loading is available when running as container.
I modified the DockerFile and rebuilt the image to make the script run as root, so I am confident this isn't a permissions issue.
The error message recieved in the http response:
"error":{"id":"MATLAB:load:couldNotReadFile","message":"Unable to find file or directory 'subdirectory\\someMatFile.mat'}
Accepted Answer
Fangjun Jiang
on 27 Mar 2024
Edited: Fangjun Jiang
on 27 Mar 2024
Notice the two backslashes "\\" in the error message about the file?
"error":{"id":"MATLAB:load:couldNotReadFile","message":"Unable to find file or directory 'subdirectory\\someMatFile.mat'}
Does it make a difference between slash "/" and back slash "\"? Try to use
fullfile('subdirectory','someMatFile.mat')
filesep
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