149 lines
3.7 KiB
Go
149 lines
3.7 KiB
Go
/*
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Copyright 2019 The Fission Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package timetrigger
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import (
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"fmt"
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"time"
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"github.com/pkg/errors"
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"github.com/robfig/cron"
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uuid "github.com/satori/go.uuid"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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fv1 "github.com/fission/fission/pkg/apis/fission.io/v1"
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"github.com/fission/fission/pkg/controller/client"
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"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
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"github.com/fission/fission/pkg/fission-cli/cmd/spec"
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flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
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"github.com/fission/fission/pkg/fission-cli/util"
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)
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type CreateSubCommand struct {
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client *client.Client
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trigger *fv1.TimeTrigger
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}
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func Create(input cli.Input) error {
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c, err := util.GetServer(input)
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if err != nil {
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return err
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}
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opts := CreateSubCommand{
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client: c,
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}
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return opts.do(input)
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}
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func (opts *CreateSubCommand) do(input cli.Input) error {
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err := opts.complete(input)
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if err != nil {
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return err
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}
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return opts.run(input)
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}
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func (opts *CreateSubCommand) complete(input cli.Input) error {
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name := input.String(flagkey.TtName)
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if len(name) == 0 {
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name = uuid.NewV4().String()
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}
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fnName := input.String(flagkey.TtFnName)
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if len(fnName) == 0 {
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return errors.New("Need a function name to create a trigger, use --function")
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}
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fnNamespace := input.String(flagkey.NamespaceFunction)
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cronSpec := input.String(flagkey.TtCron)
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if len(cronSpec) == 0 {
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return errors.New("Need a cron spec like '0 30 * * * *', '@every 1h30m', or '@hourly'; use --cron")
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}
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opts.trigger = &fv1.TimeTrigger{
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Metadata: metav1.ObjectMeta{
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Name: name,
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Namespace: fnNamespace,
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},
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Spec: fv1.TimeTriggerSpec{
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Cron: cronSpec,
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FunctionReference: fv1.FunctionReference{
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Type: fv1.FunctionReferenceTypeFunctionName,
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Name: fnName,
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},
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},
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}
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return nil
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}
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func (opts *CreateSubCommand) run(input cli.Input) error {
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// if we're writing a spec, don't call the API
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if input.Bool(flagkey.SpecSave) {
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specFile := fmt.Sprintf("timetrigger-%v.yaml", opts.trigger.Metadata.Name)
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err := spec.SpecSave(*opts.trigger, specFile)
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if err != nil {
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return errors.Wrap(err, "error creating time trigger spec")
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}
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return nil
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}
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_, err := opts.client.TimeTriggerCreate(opts.trigger)
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if err != nil {
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return errors.Wrap(err, "error creating Time trigger")
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}
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fmt.Printf("trigger '%v' created\n", opts.trigger.Metadata.Name)
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t, err := getAPITimeInfo(opts.client)
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if err != nil {
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return err
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}
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err = getCronNextNActivationTime(opts.trigger.Spec.Cron, t, 1)
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if err != nil {
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return errors.Wrap(err, "error passing cron spec examination")
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}
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return nil
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}
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func getAPITimeInfo(client *client.Client) (time.Time, error) {
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serverInfo, err := client.ServerInfo()
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if err != nil {
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return time.Time{}, errors.Errorf("Error syncing server time information: %v", err)
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}
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return serverInfo.ServerTime.CurrentTime, nil
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}
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func getCronNextNActivationTime(cronSpec string, serverTime time.Time, round int) error {
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sched, err := cron.Parse(cronSpec)
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if err != nil {
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return err
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}
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fmt.Printf("Current Server Time: \t%v\n", serverTime.Format(time.RFC3339))
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for i := 0; i < round; i++ {
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serverTime = sched.Next(serverTime)
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fmt.Printf("Next %v invocation: \t%v\n", i+1, serverTime.Format(time.RFC3339))
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}
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return nil
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}
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