Added prioritization of networks

Signed-off-by: Zal Daroga <zaldaroga@yahoo.com>

compose/config/config_schema_v2.0.json

@@ -299,7 +299,8 @@
           },
           "additionalProperties": false
         },
-        "internal": {"type": "boolean"}
+        "internal": {"type": "boolean"},
+        "priority": {"type": "number"}
       },
       "additionalProperties": false
     },

compose/config/config_schema_v2.1.json

@@ -351,7 +351,8 @@
         "internal": {"type": "boolean"},
         "enable_ipv6": {"type": "boolean"},
         "labels": {"$ref": "#/definitions/list_or_dict"},
-        "name": {"type": "string"}
+        "name": {"type": "string"},
+        "priority": {"type": "number"}
       },
       "additionalProperties": false
     },

compose/config/config_schema_v2.2.json

@@ -358,7 +358,8 @@
         "internal": {"type": "boolean"},
         "enable_ipv6": {"type": "boolean"},
         "labels": {"$ref": "#/definitions/list_or_dict"},
-        "name": {"type": "string"}
+        "name": {"type": "string"},
+        "priority": {"type": "number"}
       },
       "additionalProperties": false
     },

compose/config/config_schema_v2.3.json

@@ -395,7 +395,8 @@
         "internal": {"type": "boolean"},
         "enable_ipv6": {"type": "boolean"},
         "labels": {"$ref": "#/definitions/list_or_dict"},
-        "name": {"type": "string"}
+        "name": {"type": "string"},
+        "priority": {"type": "number"}
       },
       "additionalProperties": false
     },

compose/config/config_schema_v3.0.json

@@ -310,7 +310,8 @@
           "additionalProperties": false
         },
         "internal": {"type": "boolean"},
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "priority": {"type": "number"}
       },
       "additionalProperties": false
     },

compose/config/config_schema_v3.1.json

@@ -339,7 +339,8 @@
           "additionalProperties": false
         },
         "internal": {"type": "boolean"},
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "priority": {"type": "number"}
       },
       "additionalProperties": false
     },

compose/config/config_schema_v3.2.json

@@ -387,7 +387,8 @@
         },
         "internal": {"type": "boolean"},
         "attachable": {"type": "boolean"},
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "priority": {"type": "number"}
       },
       "additionalProperties": false
     },

compose/config/config_schema_v3.3.json

@@ -430,7 +430,8 @@
         },
         "internal": {"type": "boolean"},
         "attachable": {"type": "boolean"},
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "priority": {"type": "number"}
       },
       "additionalProperties": false
     },

compose/config/config_schema_v3.4.json

@@ -438,7 +438,8 @@
         },
         "internal": {"type": "boolean"},
         "attachable": {"type": "boolean"},
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "priority": {"type": "number"}
       },
       "additionalProperties": false
     },

compose/config/config_schema_v3.5.json

@@ -464,7 +464,8 @@
         },
         "internal": {"type": "boolean"},
         "attachable": {"type": "boolean"},
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "priority": {"type": "number"}
       },
       "additionalProperties": false
     },

compose/network.py

@@ -26,7 +26,7 @@
 class Network(object):
     def __init__(self, client, project, name, driver=None, driver_opts=None,
                  ipam=None, external=False, internal=False, enable_ipv6=False,
-                 labels=None, custom_name=False):
+                 labels=None, custom_name=False, priority=0):
         self.client = client
         self.project = project
         self.name = name
@@ -38,6 +38,7 @@ def __init__(self, client, project, name, driver=None, driver_opts=None,
         self.enable_ipv6 = enable_ipv6
         self.labels = labels
         self.custom_name = custom_name
+        self.priority = priority
 
     def ensure(self):
         if self.external:
@@ -214,6 +215,7 @@ def build_networks(name, config_data, client):
             enable_ipv6=data.get('enable_ipv6'),
             labels=data.get('labels'),
             custom_name=data.get('name') is not None,
+            priority=data.get('priority'),
         )
         for network_name, data in network_config.items()
     }

compose/service.py

@@ -6,6 +6,7 @@
 import re
 import sys
 from collections import namedtuple
+from collections import OrderedDict
 from operator import attrgetter
 
 import enum
@@ -557,10 +558,15 @@ def start_container(self, container):
             raise OperationFailedError("Cannot start service %s: %s" % (self.name, ex.explanation))
         return container
 
+    def prioritized_networks(self):
+        prioritized_networks = OrderedDict(
+            sorted(self.networks.items(), key=lambda t: t[1].get('priority', 0), reverse=True))
+        return prioritized_networks
+
     def connect_container_to_networks(self, container):
         connected_networks = container.get('NetworkSettings.Networks')
 
-        for network, netdefs in self.networks.items():
+        for network, netdefs in self.prioritized_networks().items():
             if network in connected_networks:
                 if short_id_alias_exists(container, network):
                     continue

tests/acceptance/cli_test.py

@@ -1274,6 +1274,18 @@ def test_up_with_net_v1(self):
             bar_container.id
         )
 
+    def test_up_ordered_networks(self):
+        self.base_dir = 'tests/fixtures/networks'
+
+        self.dispatch(['-f', 'ordered-networks.yml', 'up', '-d'])
+
+        containers = self.project.get_service('web').containers()
+
+        for container in containers:
+            networks = container.get('NetworkSettings.Networks')
+            assert networks.keys()[0] == "networks_bar"
+            assert networks.keys()[1] == "networks_foo"
+
     @v3_only()
     def test_up_with_healthcheck(self):
         def wait_on_health_status(container, status):

tests/fixtures/networks/ordered-networks.yml

@@ -0,0 +1,13 @@
+version: "2"
+
+services:
+  web:
+    image: busybox
+    command: top
+    networks: ["foo", "bar"]
+
+networks:
+  foo:
+    priority: 1
+  bar:
+     priority: 2