[graal] Add support of Graal's CoCom Backend to ELK

[inishchith]

Address: inishchith/gsoc#8

TODO:

• Add tests
• Update docstrings
• Update commit description

NOTE:

• The failing test is due to Graal module not being a part of requirements.txt(dependencies) and is a part of this PR just to check the coverage of new additions.

Signed-off-by: inishchith [email protected]

[valeriocos]

As discussed at: inishchith/gsoc#11 (comment), please find below a proposal to extract modules from a file_path. The method extract_modules could be called in the get_rich_item, and the output stored in the attribute modules (or any other one) as follows: eitem['modules'] = self.extract_modules(file_path)

def extract_modules(file_path):

    path_chunks = file_path.split('/')

    modules = []
    for idx, p in enumerate(path_chunks):
        sub_path = '/'.join(path_chunks[:idx])

        if sub_path:
            modules.append(sub_path)

    return modules

WDYT @inishchith ?

[inishchith]

@valeriocos Thanks for elaborating on the idea.
I'll update the PR and start working on the module-level idea.

Thanks!

[coveralls]

Pull Request Test Coverage Report for Build 1521

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 52 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.2%) to 68.543%

---

Files with Coverage Reduction	New Missed Lines	%
/home/travis/build/chaoss/grimoirelab-elk/grimoire_elk/utils.py	52	60.56%

Totals
Change from base Build 1510:	0.2%
Covered Lines:	5722
Relevant Lines:	8348

---

💛 - Coveralls

[inishchith]

@valeriocos i've added some tests.
I'm not sure why the coveralls task reports aren't displayed. Can you please have a look?

[inishchith]

closing in reference to #664