check-postgresql-xml-support.py
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check-postgresql-xml-support.py
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	#!/usr/bin/env python3

	# -------------------------------------------------------------
	# Monitoring :: PostgreSQL :: XML support
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
	# Project: Nasqueron
	# Description: Checks if the PostgreSQL process has XML support
	# License: BSD-2-Clause
	# -------------------------------------------------------------


	import distutils.spawn
	import lddcollect
	import sys


	# -------------------------------------------------------------
	# Dependencies
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


	def has_lib(process, needed_lib):
	dependencies = lddcollect.lddtree(process)

	return any(lib.startswith(needed_lib) for lib in dependencies["needed"])


	# -------------------------------------------------------------
	# PostgreSQL locator
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


	def find_postgres():
	return distutils.spawn.find_executable("postgres")


	# -------------------------------------------------------------
	# Application entry point
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


	def run():
	process = find_postgres()
	if process is None:
	print("UNKNOWN: can't find expected postgres process")
	sys.exit(3)

	is_built_against_libxml = has_lib(process, "libxml2.so")
	if is_built_against_libxml:
	print("OK")
	sys.exit(0)

	print(
	"ERROR: PostgreSQL has no XML support through libxml2, PostgreSQL port MUST be rebuilt as soon as possible."
	)
	sys.exit(2)


	if __name__ == "__main__":
	run()