aws-lambda-builders/aws_lambda_builders/path_resolver.py at develop · aavinav/aws-lambda-builders · GitHub

29 lines (23 loc) · 1006 Bytes

"""

Basic Path Resolver that looks for the executable by runtime first, before proceeding to 'language' in PATH.

"""

from aws_lambda_builders.utils import which

class PathResolver(object):

def __init__(self, binary, runtime, executable_search_paths=None):

self.binary = binary

self.runtime = runtime

self.executables = [self.runtime, self.binary]

self.executable_search_paths = executable_search_paths

def _which(self):

exec_paths = []

for executable in [executable for executable in self.executables if executable is not None]:

paths = which(executable, executable_search_paths=self.executable_search_paths)

exec_paths.extend(paths)

if not exec_paths:

raise ValueError(

"Path resolution for runtime: {} of binary: " "{} was not successful".format(self.runtime, self.binary)

)

return exec_paths

@property

def exec_paths(self):

return self._which()

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