How to configure Jenkins Cobertura plugin to monitor specific packages? - jenkins

Question

My project has a number of packages ("models", "controllers", etc.). I've set up Jenkins with the Cobertura plugin to generate coverage reports, which is great. I'd like to mark a build as unstable if coverage drops below a certain threshold, but only on certain packages (e.g., "controllers", but not "models"). I don't see an obvious way to do this in the configuration UI, however -- it looks like the thresholds are global.
Is there a way to do this?

Answer 1

(Answering my own question here)
As far as I can tell, this isn't possible -- I haven't seen anything after a couple days of looking. I wrote a simple script that would do what I want -- take the coverage output, parse it, and fail the build if coverage of specific packages didn't meet certain thresholds. It's dirty and can be cleaned up/expanded, but the basic idea is here. Comments are welcome.
#!/usr/bin/env python
'''
Jenkins' Cobertura plugin doesn't allow marking a build as successful or
failed based on coverage of individual packages -- only the project as a
whole. This script will parse the coverage.xml file and fail if the coverage of
specified packages doesn't meet the thresholds given
'''
import sys
from lxml import etree
PACKAGES_XPATH = etree.XPath('/coverage/packages/package')
def main(argv):
filename = argv[0]
package_args = argv[1:] if len(argv) > 1 else []
# format is package_name:coverage_threshold
package_coverage = {package: int(coverage) for
package, coverage in [x.split(':') for x in package_args]}
xml = open(filename, 'r').read()
root = etree.fromstring(xml)
packages = PACKAGES_XPATH(root)
failed = False
for package in packages:
name = package.get('name')
if name in package_coverage:
# We care about this one
print 'Checking package {} -- need {}% coverage'.format(
name, package_coverage[name])
coverage = float(package.get('line-rate', '0.0')) * 100
if coverage < package_coverage[name]:
print ('FAILED - Coverage for package {} is {}% -- '
'minimum is {}%'.format(
name, coverage, package_coverage[name]))
failed = True
else:
print "PASS"
if failed:
sys.exit(1)
if __name__ == '__main__':
main(sys.argv[1:])