Add support for 'cpu_period' for compose v2.1-v2.3.

Signed-off-by: Matthieu Nottale <matthieu.nottale@docker.com>

compose/config/config.py

@@ -67,6 +67,7 @@ DOCKER_CONFIG_KEYS = [
     'command',
     'cpu_count',
     'cpu_percent',
+    'cpu_period',
     'cpu_quota',
     'cpu_shares',
     'cpus',

compose/config/config_schema_v2.1.json

@@ -106,6 +106,7 @@
         "container_name": {"type": "string"},
         "cpu_shares": {"type": ["number", "string"]},
         "cpu_quota": {"type": ["number", "string"]},
+        "cpu_period": {"type": ["number", "string"]},
         "cpuset": {"type": "string"},
         "depends_on": {
           "oneOf": [

compose/config/config_schema_v2.2.json

@@ -110,6 +110,7 @@
         "cpu_percent": {"type": "integer", "minimum": 0, "maximum": 100},
         "cpu_shares": {"type": ["number", "string"]},
         "cpu_quota": {"type": ["number", "string"]},
+        "cpu_period": {"type": ["number", "string"]},
         "cpus": {"type": "number", "minimum": 0},
         "cpuset": {"type": "string"},
         "depends_on": {

compose/config/config_schema_v2.3.json

@@ -113,6 +113,7 @@
         "cpu_percent": {"type": "integer", "minimum": 0, "maximum": 100},
         "cpu_shares": {"type": ["number", "string"]},
         "cpu_quota": {"type": ["number", "string"]},
+        "cpu_period": {"type": ["number", "string"]},
         "cpus": {"type": "number", "minimum": 0},
         "cpuset": {"type": "string"},
         "depends_on": {

compose/config/interpolation.py

@@ -10,6 +10,7 @@ import six
 from .errors import ConfigurationError
 from compose.const import COMPOSEFILE_V2_0 as V2_0
 from compose.utils import parse_bytes
+from compose.utils import parse_nanoseconds_int
 
 
 log = logging.getLogger(__name__)
@@ -223,6 +224,12 @@ def bytes_to_int(s):
     return v
 
 
+def to_microseconds(v):
+    if not isinstance(v, six.string_types):
+        return v
+    return int(parse_nanoseconds_int(v) / 1000)
+
+
 class ConversionMap(object):
     map = {
         service_path('blkio_config', 'weight'): to_int,
@@ -230,6 +237,8 @@ class ConversionMap(object):
         service_path('build', 'labels', FULL_JOKER): to_str,
         service_path('cpus'): to_float,
         service_path('cpu_count'): to_int,
+        service_path('cpu_quota'): to_microseconds,
+        service_path('cpu_period'): to_microseconds,
         service_path('configs', 'mode'): to_int,
         service_path('secrets', 'mode'): to_int,
         service_path('healthcheck', 'retries'): to_int,

compose/service.py

@@ -62,6 +62,7 @@ HOST_CONFIG_KEYS = [
     'cgroup_parent',
     'cpu_count',
     'cpu_percent',
+    'cpu_period',
     'cpu_quota',
     'cpu_shares',
     'cpus',
@@ -948,6 +949,7 @@ class Service(object):
             device_write_iops=blkio_config.get('device_write_iops'),
             mounts=options.get('mounts'),
             device_cgroup_rules=options.get('device_cgroup_rules'),
+            cpu_period=options.get('cpu_period'),
         )
 
     def get_secret_volumes(self):

tests/integration/service_test.py

@@ -121,10 +121,11 @@ class ServiceTest(DockerClientTestCase):
         assert container.get('HostConfig.CpuShares') == 73
 
     def test_create_container_with_cpu_quota(self):
-        service = self.create_service('db', cpu_quota=40000)
+        service = self.create_service('db', cpu_quota=40000, cpu_period=150000)
         container = service.create_container()
         container.start()
         assert container.get('HostConfig.CpuQuota') == 40000
+        assert container.get('HostConfig.CpuPeriod') == 150000
 
     @v2_2_only()
     def test_create_container_with_cpu_count(self):