1 files changed, 103 insertions, 0 deletions
diff --git a/lib/modules/postmulti b/lib/modules/postmulti
new file mode 100644
index 0000000..d6ecb09
--- /dev/null
+++ b/lib/modules/postmulti
@@ -0,0 +1,103 @@
+#!/usr/bin/python
+
+# Create and manage postfix instances.
+# Copyright (c) 2013 Guilhem Moulin <guilhem@fripost.org>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+# Look up postfix configuration variable
+def postconf(k, instance=None):
+    if instance:
+        cmd = [ os.path.join(os.sep, 'usr', 'sbin', 'postmulti')
+              , '-x'
+              , '-i', instance
+              , '--'
+              ]
+    else:
+        cmd = []
+
+    cmd.extend([ os.path.join(os.sep, 'usr', 'sbin', 'postconf')
+               , '-h', k ])
+    return subprocess.check_output(cmd, stderr=subprocess.STDOUT).rstrip()
+
+
+# To destroy an existing instance:
+#   postmulti -e disable -i mx
+#   postmulti -e destroy -i mx
+
+def main():
+    module = AnsibleModule(
+        argument_spec = dict(
+            instance = dict( required=True ),
+            group    = dict( required=False )
+        ),
+        supports_check_mode=True
+    )
+
+    params = module.params
+    instance = params['instance']
+    group = params['group']
+
+    changed=False
+    try:
+        enable  = postconf('multi_instance_enable')
+        wrapper = postconf('multi_instance_wrapper')
+
+        if enable != "yes" or not wrapper:
+            # Initiate postmulti
+            changed = True
+            if module.check_mode:
+                module.exit_json(changed=changed, msg="init postmulti")
+            cmd = [ os.path.join(os.sep, 'usr', 'sbin', 'postmulti') ]
+            cmd.extend([ '-e', 'init' ])
+            subprocess.check_output(cmd, stderr=subprocess.STDOUT).rstrip()
+
+        instances = postconf('multi_instance_directories').split()
+        if os.path.join(os.sep, 'etc', 'postfix-%s' % instance) not in instances:
+            changed = True
+            # Create the instance
+
+            if module.check_mode:
+                module.exit_json(changed=changed, msg="create postmulti")
+            cmd = [ os.path.join(os.sep, 'usr', 'sbin', 'postmulti') ]
+            cmd.extend([ '-e', 'create' ])
+            if group:
+                cmd.extend([ '-G', group ])
+            cmd.extend([ '-I', 'postfix-%s' % instance ])
+            subprocess.check_output(cmd, stderr=subprocess.STDOUT).rstrip()
+
+        elif group != postconf('multi_instance_group', instance):
+           changed = True
+
+           # Assign a new group, or remove the existing group
+           if module.check_mode:
+               module.exit_json(changed=changed, msg="assign group")
+           cmd = [ os.path.join(os.sep, 'usr', 'sbin', 'postmulti') ]
+           cmd.extend([ '-e', 'assign', '-i', 'postfix-%s' % instance ])
+           if group:
+               cmd.extend([ '-G', group ])
+           else:
+               cmd.extend([ '-G', '-' ])
+           subprocess.check_output(cmd, stderr=subprocess.STDOUT).rstrip()
+
+        module.exit_json(changed=changed)
+
+    except subprocess.CalledProcessError, e:
+        module.fail_json(rv=e.returncode, msg=e.output.rstrip())
+
+
+# this is magic, see lib/ansible/module_common.py
+#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
+main()