Implment pulumi policy publish

This commit, at long last, will connect the code we've written to pack
up and publish a set of policies to the pulumi service, to a CLI command
`pulumi policy publish`.

cmd/policy.go

@@ -0,0 +1,33 @@
+// Copyright 2016-2018, Pulumi Corporation.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"github.com/pulumi/pulumi/pkg/util/cmdutil"
+	"github.com/spf13/cobra"
+)
+
+func newPolicyCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "policy",
+		Short: "Manage resource policies",
+		Long:  "Manage language and resource provider plugins.\n",
+		Args:  cmdutil.NoArgs,
+	}
+
+	cmd.AddCommand(newPolicyPublishCmd())
+
+	return cmd
+}

cmd/policy_publish.go

@@ -0,0 +1,117 @@
+// Copyright 2016-2018, Pulumi Corporation.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/pulumi/pulumi/pkg/engine"
+
+	"github.com/pulumi/pulumi/pkg/backend"
+
+	"github.com/pkg/errors"
+	"github.com/pulumi/pulumi/pkg/backend/display"
+	"github.com/pulumi/pulumi/pkg/backend/httpstate"
+	"github.com/pulumi/pulumi/pkg/util/cmdutil"
+	"github.com/pulumi/pulumi/pkg/workspace"
+	"github.com/spf13/cobra"
+)
+
+func newPolicyPublishCmd() *cobra.Command {
+	var cmd = &cobra.Command{
+		Use:   "publish <orgName>/<policyPackName>",
+		Args:  cmdutil.ExactArgs(1),
+		Short: "Publish resource policies to the Pulumi service",
+		Long:  "Publish resource policies to the Pulumi service",
+		Run: cmdutil.RunFunc(func(cmd *cobra.Command, args []string) error {
+			//
+			// Obtain current PolicyPack, tied to the Pulumi service backend.
+			//
+
+			policyPack, err := requirePolicyPack(args[0])
+			if err != nil {
+				return err
+			}
+
+			//
+			// Load metadata about the current project.
+			//
+
+			// TODO: `readPolicyProject` instead?
+			proj, root, err := readProject()
+			if err != nil {
+				return err
+			}
+
+			projinfo := &engine.Projinfo{Proj: proj, Root: root}
+			_ /*pwd*/, _ /*main*/, plugctx, err := engine.ProjectInfoContext(
+				projinfo, nil, nil, cmdutil.Diag(), cmdutil.Diag(), nil)
+			if err != nil {
+				return err
+			}
+
+			//
+			// Attempt to publish the PolicyPack.
+			//
+
+			res := policyPack.Publish(commandContext(), backend.PublishOperation{
+				Root: root, PlugCtx: plugctx, Scopes: cancellationScopes})
+			if res != nil && res.Error() != nil {
+				return res.Error()
+			}
+
+			return nil
+		}),
+	}
+
+	return cmd
+}
+
+func requirePolicyPack(policyPack string) (backend.PolicyPack, error) {
+	//
+	// Attempt to log into cloud backend.
+	//
+
+	cloudURL, err := workspace.GetCurrentCloudURL()
+	if err != nil {
+		return nil, errors.Wrap(err,
+			"`policy` command requires the user to be logged into the Pulumi service")
+	}
+
+	displayOptions := display.Options{
+		Color: cmdutil.GetGlobalColorization(),
+	}
+
+	b, err := httpstate.Login(commandContext(), cmdutil.Diag(), cloudURL, displayOptions)
+	if err != nil {
+		return nil, err
+	}
+
+	//
+	// Obtain PolicyPackReference.
+	//
+
+	policy, err := b.GetPolicyPack(commandContext(), policyPack, cmdutil.Diag())
+	if err != nil {
+		return nil, err
+	}
+	if policy != nil {
+		return policy, nil
+	}
+
+	// TODO(hausdorff): Post MVP, prompt the user to create the PolicyPack if it does not exist.
+
+	return nil, fmt.Errorf("Could not find PolicyPack %q", policyPack)
+}

cmd/pulumi.go

@@ -160,6 +160,8 @@ func NewPulumiCmd() *cobra.Command {
 	cmd.AddCommand(newUpCmd())
 	cmd.AddCommand(newPreviewCmd())
 	cmd.AddCommand(newDestroyCmd())
+	//     - Policy Management Commands:
+	cmd.AddCommand(newPolicyCmd())
 	//     - Stack Management Commands:
 	cmd.AddCommand(newStackCmd())
 	cmd.AddCommand(newConfigCmd())