[hopem, r=gnuoy]

Fixes network-vlan-ranges parsing

Partially-Closes-Bug: 1451095

config.yaml

@@ -99,8 +99,10 @@ options:
     type: string
     default: "physnet1:1000:2000"
     description: |
-      Space-delimited list of Neutron network-provider & vlan-id-ranges using
-      the following format "<provider>:<start>:<end> ...".
+      Space-delimited list of <physical_network>:<vlan_min>:<vlan_max> or
+      <physical_network> specifying physical_network names usable for VLAN
+      provider and tenant networks, as well as ranges of VLAN tags on each
+      available for allocation to tenant networks.
   # Quota configuration settings
   quota-security-group:
     default: 10

hooks/charmhelpers/contrib/hahelpers/cluster.py

@@ -52,6 +52,8 @@ from charmhelpers.core.strutils import (
     bool_from_string,
 )
 
+DC_RESOURCE_NAME = 'DC'
+
 
 class HAIncompleteConfig(Exception):
     pass
@@ -95,6 +97,27 @@ def is_clustered():
     return False
 
 
+def is_crm_dc():
+    """
+    Determine leadership by querying the pacemaker Designated Controller
+    """
+    cmd = ['crm', 'status']
+    try:
+        status = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
+        if not isinstance(status, six.text_type):
+            status = six.text_type(status, "utf-8")
+    except subprocess.CalledProcessError:
+        return False
+    current_dc = ''
+    for line in status.split('\n'):
+        if line.startswith('Current DC'):
+            # Current DC: juju-lytrusty-machine-2 (168108163) - partition with quorum
+            current_dc = line.split(':')[1].split()[0]
+    if current_dc == get_unit_hostname():
+        return True
+    return False
+
+
 @retry_on_exception(5, base_delay=2, exc_type=CRMResourceNotFound)
 def is_crm_leader(resource, retry=False):
     """
@@ -104,6 +127,8 @@ def is_crm_leader(resource, retry=False):
     We allow this operation to be retried to avoid the possibility of getting a
     false negative. See LP #1396246 for more info.
     """
+    if resource == DC_RESOURCE_NAME:
+        return is_crm_dc()
     cmd = ['crm', 'resource', 'show', resource]
     try:
         status = subprocess.check_output(cmd, stderr=subprocess.STDOUT)

hooks/charmhelpers/contrib/openstack/neutron.py

@@ -256,11 +256,14 @@ def network_manager():
 def parse_mappings(mappings):
     parsed = {}
     if mappings:
-        mappings = mappings.split(' ')
+        mappings = mappings.split()
         for m in mappings:
             p = m.partition(':')
-            if p[1] == ':':
-                parsed[p[0].strip()] = p[2].strip()
+            key = p[0].strip()
+            if p[1]:
+                parsed[key] = p[2].strip()
+            else:
+                parsed[key] = ''
 
     return parsed
 
@@ -283,13 +286,13 @@ def parse_data_port_mappings(mappings, default_bridge='br-data'):
     Returns dict of the form {bridge:port}.
     """
     _mappings = parse_mappings(mappings)
-    if not _mappings:
+    if not _mappings or list(_mappings.values()) == ['']:
         if not mappings:
             return {}
 
         # For backwards-compatibility we need to support port-only provided in
         # config.
-        _mappings = {default_bridge: mappings.split(' ')[0]}
+        _mappings = {default_bridge: mappings.split()[0]}
 
     bridges = _mappings.keys()
     ports = _mappings.values()
@@ -309,6 +312,8 @@ def parse_vlan_range_mappings(mappings):
 
     Mappings must be a space-delimited list of provider:start:end mappings.
 
+    The start:end range is optional and may be omitted.
+
     Returns dict of the form {provider: (start, end)}.
     """
     _mappings = parse_mappings(mappings)

hooks/charmhelpers/core/hookenv.py

@@ -28,6 +28,7 @@ import yaml
 import subprocess
 import sys
 import errno
+import tempfile
 from subprocess import CalledProcessError
 
 import six
@@ -362,14 +363,29 @@ def relation_set(relation_id=None, relation_settings=None, **kwargs):
     """Set relation information for the current unit"""
     relation_settings = relation_settings if relation_settings else {}
     relation_cmd_line = ['relation-set']
+    accepts_file = "--file" in subprocess.check_output(
+        relation_cmd_line + ["--help"])
     if relation_id is not None:
         relation_cmd_line.extend(('-r', relation_id))
-    for k, v in (list(relation_settings.items()) + list(kwargs.items())):
-        if v is None:
-            relation_cmd_line.append('{}='.format(k))
-        else:
-            relation_cmd_line.append('{}={}'.format(k, v))
-    subprocess.check_call(relation_cmd_line)
+    settings = relation_settings.copy()
+    settings.update(kwargs)
+    if accepts_file:
+        # --file was introduced in Juju 1.23.2. Use it by default if
+        # available, since otherwise we'll break if the relation data is
+        # too big. Ideally we should tell relation-set to read the data from
+        # stdin, but that feature is broken in 1.23.2: Bug #1454678.
+        with tempfile.NamedTemporaryFile(delete=False) as settings_file:
+            settings_file.write(yaml.safe_dump(settings).encode("utf-8"))
+        subprocess.check_call(
+            relation_cmd_line + ["--file", settings_file.name])
+        os.remove(settings_file.name)
+    else:
+        for key, value in settings.items():
+            if value is None:
+                relation_cmd_line.append('{}='.format(key))
+            else:
+                relation_cmd_line.append('{}={}'.format(key, value))
+        subprocess.check_call(relation_cmd_line)
     # Flush cache of any relation-gets for local unit
     flush(local_unit())