cli/request: support passing instance parameters from a file

Support a syntax like:

     slapos request --node=computer_guid=local --parameters=_=@~/request.json ERP5 https://lab.nexedi.com/nexedi/slapos/raw/1.0.145/software/erp5/software.cfg

to request an instance with a parameter named _ whose value is the content of
~/request.json file.

This also adds missing tests for slapos request command

slapos/cli/request.py

@@ -28,13 +28,13 @@
 ##############################################################################
 
 import pprint
+import os.path
 
 from slapos.cli.config import ClientConfigCommand
 from slapos.client import init, ClientConfig, _getSoftwareReleaseFromSoftwareString
 from slapos.slap import ResourceNotReady
 
 
-
 def parse_option_dict(options):
     """
     Parse a list of option strings like foo=bar baz=qux and return a dictionary.
@@ -45,6 +45,11 @@ def parse_option_dict(options):
         key, value = option_pair.split('=', 1)
         if key in ret:
             raise ValueError("Multiple values provided for the same key '%s'" % key)
+        if value.startswith('@'):
+            file_path = os.path.expanduser(value[1:])
+            if os.path.exists(file_path):
+                with open(file_path, "r") as f:
+                    value = f.read()
         ret[key] = value
     return ret
 
@@ -80,7 +85,8 @@ class RequestCommand(ClientConfigCommand):
 
         ap.add_argument('--parameters',
                         nargs='+',
-                        help="Give your configuration 'option1=value1 option2=value2'")
+                        help="Instance parameters, in the form 'option1=value1 option2=value2'.\n"
+                        "The content of a file can also be passed as option=@filename")
 
         return ap
 

slapos/tests/test_cli.py

@@ -49,10 +49,12 @@ import slapos.cli.computer_info
 import slapos.cli.computer_list
 import slapos.cli.computer_token
 import slapos.cli.supervisorctl
+import slapos.cli.request
 from slapos.cli.proxy_show import do_show, StringIO
 from slapos.cli.cache import do_lookup as cache_do_lookup
 from slapos.cli.cache_source import do_lookup as cache_source_do_lookup
 from slapos.client import ClientConfig
+from slapos.slap import SoftwareProductCollection
 import slapos.grid.svcbackend
 import slapos.proxy
 import slapos.slap
@@ -65,8 +67,8 @@ def raiseNotFoundError(*args, **kwargs):
 class CliMixin(unittest.TestCase):
   def setUp(self):
     slap = slapos.slap.slap()
-    self.local = {'slap': slap}
     self.logger = create_autospec(logging.Logger)
+    self.local = {'slap': slap, 'product': SoftwareProductCollection(self.logger, slap)}
     self.conf = create_autospec(ClientConfig)
 
 class TestCliCache(CliMixin):
@@ -567,3 +569,50 @@ print(request('software_release', 'instance').getInstanceParameterDict()['parame
       script.write(self.script)
       script.flush()
       app.run(('console', '--cfg', config_file, script.name))
+
+
+@patch.object(slapos.slap.slap, 'registerOpenOrder', return_value=mock.create_autospec(slapos.slap.OpenOrder))
+class TestCliRequest(CliMixin):
+  def test_parse_option_dict(self, _):
+    parse_option_dict = slapos.cli.request.parse_option_dict
+
+    self.assertEqual({'foo': 'bar', 'a': 'b'}, parse_option_dict(['foo=bar', 'a=b']))
+    # malformed option = assignment
+    self.assertRaises(ValueError, parse_option_dict, ['a'])
+    # duplicated key
+    self.assertRaises(ValueError, parse_option_dict, ['a=b', 'a=c'])
+    # @file syntax
+    with tempfile.NamedTemporaryFile(mode='w') as f:
+      f.write("file content")
+      f.flush()
+      self.assertEqual({'_': 'file content'}, parse_option_dict(['_=@' + f.name]))
+    # corner cases
+    self.assertEqual({'a': 'a=b'}, parse_option_dict(['a=a=b']))
+    self.assertEqual({}, parse_option_dict([]))
+    self.assertEqual({'_': '@file'}, parse_option_dict(['_=@file']))
+
+  def test_request(self, _):
+    self.conf.reference = 'instance reference'
+    self.conf.software_url = 'software URL'
+    self.conf.parameters = {'key': 'value'}
+    self.conf.node = {'computer_guid': 'COMP-1234'}
+    self.conf.type = None
+    self.conf.state = None
+    self.conf.slave = False
+
+    slapos.cli.request.do_request(self.logger, self.conf, self.local)
+
+    self.logger.info.assert_any_call(
+        'Requesting %s as instance of %s...',
+        'instance reference',
+        'software URL',
+    )
+    self.local['slap'].registerOpenOrder().request.assert_called_once_with(
+        software_release='software URL',
+        partition_reference='instance reference',
+        partition_parameter_kw={'key': 'value'},
+        software_type=None,
+        filter_kw={'computer_guid': 'COMP-1234'},
+        state=None,
+        shared=False,
+    )
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