Convert time data back to string values when serializing config

Signed-off-by: Joffrey F <joffrey@docker.com>

compose/config/serialize.py

@@ -52,6 +52,25 @@ def serialize_config(config):
         width=80)
 
 
+def serialize_ns_time_value(value):
+    result = (value, 'ns')
+    table = [
+        (1000., 'us'),
+        (1000., 'ms'),
+        (1000., 's'),
+        (60., 'm'),
+        (60., 'h')
+    ]
+    for stage in table:
+        tmp = value / stage[0]
+        if tmp == int(value / stage[0]):
+            value = tmp
+            result = (int(value), stage[1])
+        else:
+            break
+    return '{0}{1}'.format(*result)
+
+
 def denormalize_service_dict(service_dict, version):
     service_dict = service_dict.copy()
 
@@ -68,4 +87,14 @@ def denormalize_service_dict(service_dict, version):
             svc for svc in service_dict['depends_on'].keys()
         ])
 
+    if 'healthcheck' in service_dict:
+        if 'interval' in service_dict['healthcheck']:
+            service_dict['healthcheck']['interval'] = serialize_ns_time_value(
+                service_dict['healthcheck']['interval']
+            )
+        if 'timeout' in service_dict['healthcheck']:
+            service_dict['healthcheck']['timeout'] = serialize_ns_time_value(
+                service_dict['healthcheck']['timeout']
+            )
+
     return service_dict

tests/acceptance/cli_test.py

@@ -339,8 +339,8 @@ class CLITestCase(DockerClientTestCase):
 
                     'healthcheck': {
                         'test': 'cat /etc/passwd',
-                        'interval': 10000000000,
-                        'timeout': 1000000000,
+                        'interval': '10s',
+                        'timeout': '1s',
                         'retries': 5,
                     },
 

tests/unit/config/config_test.py

@@ -23,6 +23,7 @@ from compose.config.environment import Environment
 from compose.config.errors import ConfigurationError
 from compose.config.errors import VERSION_EXPLANATION
 from compose.config.serialize import denormalize_service_dict
+from compose.config.serialize import serialize_ns_time_value
 from compose.config.types import VolumeSpec
 from compose.const import IS_WINDOWS_PLATFORM
 from compose.utils import nanoseconds_from_time_seconds
@@ -3334,3 +3335,38 @@ class SerializeTest(unittest.TestCase):
         }
 
         assert denormalize_service_dict(service_dict, V2_1) == service_dict
+
+    def test_serialize_time(self):
+        data = {
+            9: '9ns',
+            9000: '9us',
+            9000000: '9ms',
+            90000000: '90ms',
+            900000000: '900ms',
+            999999999: '999999999ns',
+            1000000000: '1s',
+            60000000000: '1m',
+            60000000001: '60000000001ns',
+            9000000000000: '150m',
+            90000000000000: '25h',
+        }
+
+        for k, v in data.items():
+            assert serialize_ns_time_value(k) == v
+
+    def test_denormalize_healthcheck(self):
+        service_dict = {
+            'image': 'test',
+            'healthcheck': {
+                'test': 'exit 1',
+                'interval': '1m40s',
+                'timeout': '30s',
+                'retries': 5
+            }
+        }
+        processed_service = config.process_service(config.ServiceConfig(
+            '.', 'test', 'test', service_dict
+        ))
+        denormalized_service = denormalize_service_dict(processed_service, V2_1)
+        assert denormalized_service['healthcheck']['interval'] == '100s'
+        assert denormalized_service['healthcheck']['timeout'] == '30s'