From 0ba7acd20525dcc8cac80eacfe15adbe134abbe2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ren=C3=A9=20Moser?= Date: Fri, 20 Sep 2013 22:50:03 +0200 Subject: [PATCH] host: code cleanup --- library/system/host | 66 +++++++++++++++++++-------------------------- 1 file changed, 27 insertions(+), 39 deletions(-) diff --git a/library/system/host b/library/system/host index 17c3fac9307..21f4e036a4d 100644 --- a/library/system/host +++ b/library/system/host @@ -1,4 +1,4 @@ -#!/usr/bin/env python +#!/usr/bin/python # -*- coding: utf-8 -*- # # (c) 2013, René Moser @@ -23,7 +23,7 @@ DOCUMENTATION = ''' module: host author: René Moser version_added: "1.4" -short_description: Add or remove entries in /etc/hosts +short_description: Add or remove entries in /etc/hosts. requirements: description: - Manage entries in /etc/hosts @@ -60,7 +60,6 @@ EXAMPLES = ''' import os import tempfile import fileinput -import syslog class Host(object): @@ -72,13 +71,12 @@ class Host(object): self.ip = module.params['ip'] self.hostname = module.params['hostname'] self.aliases = module.params['aliases'] - self.changed = False - self.ip_matches = False - self.hostname_matches = False - self.aliases_matches = False - self.has_aliases = False - self.found_on_line = -1 - self.syslogging = False + + self._ip_matches = False + self._hostname_matches = False + self._aliases_matches = False + self._has_aliases = False + self._found_on_line = -1 def validate_has_hostname_on_present(self): err = '' @@ -95,18 +93,13 @@ class Host(object): err = "Error: Either param 'hostnames' or 'ip' must be given in state 'absent'." return err - def log(self, msg): - if self.syslogging: - syslog.openlog('ansible-%s' % os.path.basename(__file__)) - syslog.syslog(syslog.LOG_NOTICE, '' + msg) - def proceed_hosts_entries(self): f = open(self.HOSTSFILE,'rb') - self.lines = f.readlines() + self._hostsfile_lines = f.readlines() f.close() - for lineno, line in enumerate(self.lines): + for lineno, line in enumerate(self._hostsfile_lines): if line.startswith("#"): continue @@ -115,34 +108,31 @@ class Host(object): aliases = ','.join(line.split()[2:]) if self.ip and self.ip in ip: - self.ip_matches = True - self.found_on_line = lineno - self.log(self.ip + ' found on line') + self._ip_matches = True + self._found_on_line = lineno if self.hostname and self.hostname in hostname: - self.hostname_matches = True - self.found_on_line = lineno - self.log(self.hostname + ' found on line') + self._hostname_matches = True + self._found_on_line = lineno # only look at aliases if we found hostname or ip - if self.hostname_matches or self.ip_matches: + if self._hostname_matches or self._ip_matches: if aliases: - self.log('aliases: ' + aliases) - self.has_aliases = True + self._has_aliases = True if self.aliases and self.aliases == aliases: - self.aliases_matches = True + self._aliases_matches = True break def full_entry_exists(self): - if self.has_aliases and not self.aliases_matches: + if self._has_aliases and not self._aliases_matches: return False - return self.ip_matches and self.hostname_matches + return self._ip_matches and self.hostname_matches def entry_exists(self): - return self.ip_matches or self.hostname_matches + return self._ip_matches or self.hostname_matches def remove_entry(self): - self.lines.pop(self.found_on_line) + self._hostsfile_lines.pop(self._found_on_line) def add_entry(self): aliases = '' @@ -150,17 +140,16 @@ class Host(object): aliases = self.aliases.replace(',',' ') host_entry = self.ip + " " + self.hostname + " " + aliases + "\n" if self.entry_exists(): - self.lines[self.found_on_line] = host_entry + self._hostsfile_lines[self._found_on_line] = host_entry else: - self.lines.extend(host_entry) + self._hostsfile_lines.extend(host_entry) def write_changes(self): tmpfd, tmpfile = tempfile.mkstemp() f = os.fdopen(tmpfd,'wb') - f.writelines(self.lines) + f.writelines(self._hostsfile_lines) f.close() self.module.atomic_move(tmpfile, self.HOSTSFILE) - self.changed = True def main(): module = AnsibleModule( @@ -176,6 +165,7 @@ def main(): result = {} host = Host(module) result['state'] = host.state + result['changed'] = false err = host.validate_has_hostname_on_present() if err: @@ -188,22 +178,20 @@ def main(): host.proceed_hosts_entries() if host.state == 'present': if not host.full_entry_exists(): - host.log('Entry does not fully exist or may be missing.') if module.check_mode: module.exit_json(changed=True) - host.log('Adding or replacing entry.') host.add_entry() host.write_changes() + result['changed'] = True elif host.state == 'absent': if host.entry_exists(): - host.log('IP entry exists, removing.') if module.check_mode: module.exit_json(changed=True) host.remove_entry() host.write_changes() + result['changed'] = True - result['changed'] = host.changed module.exit_json(**result) # include magic from lib/ansible/module_common.py