--cachedir needs to take `stdout` field into account when calculating the hash

[mr-c]

[kapilkd13]

Hi @mr-c, here does stdout field means whatever is written to stdout should be used in calculating cache hash. We are calculating cache key here https://github.com/common-workflow-language/cwltool/blob/master/cwltool/draft2tool.py#L298 I mean to ask, how to obtain stdout field inside this function.
Also I personally feel that instead of calculating keydict of values that go inside cachekey calculation in Job function, we can pass it as a argument, starting from main function and propagating to all intermediate function adding value to it whenever necessary and finally resolving inside job function. This can allow us to avoid parameter references that may come inside our prepared cmdline https://github.com/common-workflow-language/cwltool/blob/master/cwltool/draft2tool.py#L274
Is this possible?

[mr-c]

Here are the ingredients for this issue

1. type: stdout without and accompanying stdout: my_stdout_name results in a randomly named file that stdout is redirected to. This isn't very reproducible! Suggested fix: make the generation of this name stable as long as the tool nor its inputs change
2. As you point out, the cache key calculation doesn't take the name of the stdout field into effect. This also need to be fixed

[mr-c]

for 1. see https://github.com/common-workflow-language/cwltool/blob/master/cwltool/load_tool.py#L91

[mr-c]

for 2. Change https://github.com/common-workflow-language/cwltool/blob/master/cwltool/draft2tool.py#L274 to be keydict = {u"cmdline": cmdline, u"stdout", ... }