Create initial CLI Extension for ANF resource provider

.github/CODEOWNERS

@@ -58,4 +58,6 @@
 
 /src/aks-preview/ @zqingqing1
 
-/src/sqlvm-preview/ @yareyes
+/src/sqlvm-preview/ @yareyes
+
+/src/anf-preview/ @b-lefr

src/anf-preview/HISTORY.rst

@@ -0,0 +1,8 @@
+.. :changelog:
+
+Release History
+===============
+
+0.1.0
++++++
+* Initial release

src/anf-preview/README.md

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+# Azure CLI for Azure NetApp Files (ANF) Extension #
+This is an extension to azure cli which provides commands to create and manage Azure NetApp File (ANF) storage resources.
+
+## How to use ##
+First, install the extension:
+```
+az extension add --name anf-preview
+```
+
+It can then be used to create volumes and snapshots. The typical sequence would be to first create an account
+```
+az anf account create --resource-group rg -n account_name
+```
+
+Then allocate a storage pool in which volumes can be created
+```
+az anf pool create --resource-group rg -a account_name -n pool_name -l location --size 4398046511104 --service-level "Premium"
+```
+
+Volumes are created within the pool resource
+```
+az anf volume create --resource-group rg -a account_name -p pool_name -n volume_name -l location --service-level "Premium" --usage-threshold 107374182400 --creation-token "unique-token" --subnet-id "/subscriptions/mysubsid/resourceGroups/myrg/providers/Microsoft.Network/virtualNetworks/myvnet/subnets/default"
+```
+
+Snapshots of volumes can also be created
+```
+az anf snapshot create --resource-group rg -a account_name --p pool_name -v vname -n snapshot_name -l location --file-system-id volume-uuid
+```
+
+These resources can be updated, deleted and listed. See the help to find out more
+```
+az anf --help
+```

src/anf-preview/azext_anf_preview/__init__.py

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+# --------------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for license information.
+# --------------------------------------------------------------------------------------------
+
+from azure.cli.core import AzCommandsLoader
+from ._help import helps  # pylint: disable=unused-import
+
+
+class NetAppExtensionCommandsLoader(AzCommandsLoader):
+
+    def __init__(self, cli_ctx=None):
+        from azure.cli.core.commands import CliCommandType
+        netapp_custom = CliCommandType(operations_tmpl='azext_anf_preview.custom#{}')
+        super(NetAppExtensionCommandsLoader, self).__init__(cli_ctx=cli_ctx,
+                                                            min_profile='2017-03-10-profile',
+                                                            custom_command_type=netapp_custom)
+
+    def load_command_table(self, args):
+        super(NetAppExtensionCommandsLoader, self).load_command_table(args)
+        from .commands import load_command_table
+        load_command_table(self, args)
+        return self.command_table
+
+    def load_arguments(self, command):
+        super(NetAppExtensionCommandsLoader, self).load_arguments(command)
+        from ._params import load_arguments
+        load_arguments(self, command)
+
+
+COMMAND_LOADER_CLS = NetAppExtensionCommandsLoader

src/anf-preview/azext_anf_preview/_client_factory.py

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+# --------------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for license information.
+# --------------------------------------------------------------------------------------------
+
+# pylint: disable=unused-argument
+
+
+def cf_netapp(cli_ctx, *kwargs):
+    from azure.cli.core.commands.client_factory import get_mgmt_service_client
+    from azext_anf_preview.vendored_sdks import AzureNetAppFilesManagementClient
+    return get_mgmt_service_client(cli_ctx, AzureNetAppFilesManagementClient)
+
+
+def accounts_mgmt_client_factory(cli_ctx, _):
+    return cf_netapp(cli_ctx).accounts
+
+
+def pools_mgmt_client_factory(cli_ctx, _):
+    return cf_netapp(cli_ctx).pools
+
+
+def volumes_mgmt_client_factory(cli_ctx, _):
+    return cf_netapp(cli_ctx).volumes
+
+
+def mount_targets_mgmt_client_factory(cli_ctx, _):
+    return cf_netapp(cli_ctx).mount_targets
+
+
+def snapshots_mgmt_client_factory(cli_ctx, _):
+    return cf_netapp(cli_ctx).snapshots

src/anf-preview/azext_anf_preview/_exception_handler.py

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+# --------------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for license information.
+# --------------------------------------------------------------------------------------------
+
+from knack.util import CLIError
+
+
+def netapp_exception_handler(ex):
+    from azext_anf_preview.vendored_sdks.models import ErrorException
+    if isinstance(ex, ErrorException):
+        message = ex
+        raise CLIError(message)
+    else:
+        import sys
+        from six import reraise
+        reraise(*sys.exc_info())