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Merge pull request #799 from tbielawa/yamlvalidation

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Add 'polite' YAML syntax validation and hinting
This commit is contained in:
Michael DeHaan 2012-08-07 15:59:09 -07:00
commit fc330cafce
2 changed files with 23 additions and 1 deletions
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2
lib/ansible/errors.py
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@ -30,3 +30,5 @@ class AnsibleFileNotFound(AnsibleError):
class AnsibleConnectionFailed(AnsibleError):
pass
class AnsibleYAMLValidationFailed(AnsibleError):
pass

22
lib/ansible/utils.py
View file

@ -229,9 +229,29 @@ def parse_yaml_from_file(path):
try:
data = file(path).read()
return parse_yaml(data)
except IOError:
raise errors.AnsibleError("file not found: %s" % path)
return parse_yaml(data)
except yaml.YAMLError, exc:
if hasattr(exc, 'problem_mark'):
mark = exc.problem_mark
if mark.line -1 >= 0:
before_probline = data.split("\n")[mark.line-1]
else:
before_probline = ''
probline = data.split("\n")[mark.line]
arrow = " " * mark.column + "^"
msg = """Syntax Error while loading YAML script, %s
Note: The error may actually appear before this position: line %s, column %s
%s
%s
%s""" % (path, mark.line + 1, mark.column + 1, before_probline, probline, arrow)
else:
# No problem markers means we have to throw a generic
# "stuff messed up" type message. Sry bud.
msg = "Could not parse YAML. Check over %s again." % path
raise errors.AnsibleYAMLValidationFailed(msg)
def parse_kv(args):
''' convert a string of key/value items to a dict '''