Refactor canary config command (#1370)

pkg/fission-cli/cmd/canaryconfig/update.go

@@ -0,0 +1,103 @@
+/*
+Copyright 2019 The Fission Authors.
+
+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 canaryconfig
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/pkg/errors"
+
+	fv1 "github.com/fission/fission/pkg/apis/fission.io/v1"
+	"github.com/fission/fission/pkg/controller/client"
+	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
+	"github.com/fission/fission/pkg/fission-cli/cmd"
+)
+
+type UpdateSubCommand struct {
+	client *client.Client
+	canary *fv1.CanaryConfig
+}
+
+func Update(flags cli.Input) error {
+	opts := UpdateSubCommand{
+		client: cmd.GetServer(flags),
+	}
+	return opts.do(flags)
+}
+
+func (opts *UpdateSubCommand) do(flags cli.Input) error {
+	err := opts.complete(flags)
+	if err != nil {
+		return err
+	}
+	return opts.run(flags)
+}
+
+func (opts *UpdateSubCommand) complete(flags cli.Input) error {
+	// get the current config
+	m, err := cmd.GetMetadata("name", "canaryNamespace", flags)
+	if err != nil {
+		return err
+	}
+
+	incrementStep := flags.Int("increment-step")
+	failureThreshold := flags.Int("failure-threshold")
+	incrementInterval := flags.String("increment-interval")
+
+	// check for time parsing
+	_, err = time.ParseDuration(incrementInterval)
+	if err != nil {
+		return errors.Wrap(err, "error parsing time duration")
+	}
+
+	canaryCfg, err := opts.client.CanaryConfigGet(m)
+	if err != nil {
+		return errors.Wrap(err, "error getting canary config")
+	}
+
+	var updateNeeded bool
+
+	if incrementStep != canaryCfg.Spec.WeightIncrement {
+		canaryCfg.Spec.WeightIncrement = incrementStep
+	}
+
+	if failureThreshold != canaryCfg.Spec.FailureThreshold {
+		canaryCfg.Spec.FailureThreshold = failureThreshold
+	}
+
+	if incrementInterval != canaryCfg.Spec.WeightIncrementDuration {
+		canaryCfg.Spec.WeightIncrementDuration = incrementInterval
+	}
+
+	if updateNeeded {
+		canaryCfg.Status.Status = fv1.CanaryConfigStatusPending
+	}
+
+	opts.canary = canaryCfg
+
+	return nil
+}
+
+func (opts *UpdateSubCommand) run(flags cli.Input) error {
+	_, err := opts.client.CanaryConfigUpdate(opts.canary)
+	if err != nil {
+		return errors.Wrap(err, "error updating canary config")
+	}
+	fmt.Printf("canary config '%v' updated\n", opts.canary.Metadata.Name)
+	return nil
+}