138 lines
4.1 KiB
Go
138 lines
4.1 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 canaryconfig
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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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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"
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"github.com/fission/fission/pkg/fission-cli/util"
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"github.com/fission/fission/pkg/types"
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)
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type CreateSubCommand struct {
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client *client.Client
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canary *fv1.CanaryConfig
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}
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func Create(flags cli.Input) error {
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opts := CreateSubCommand{
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client: cmd.GetServer(flags),
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}
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return opts.do(flags)
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}
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func (opts *CreateSubCommand) do(flags cli.Input) error {
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err := opts.complete(flags)
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if err != nil {
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return err
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}
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return opts.run(flags)
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}
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func (opts *CreateSubCommand) complete(flags cli.Input) error {
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// canary configs can be created for functions in the same namespace
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trigger := flags.String("httptrigger")
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newFunc := flags.String("newfunction")
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oldFunc := flags.String("oldfunction")
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ns := flags.String("fnNamespace")
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incrementStep := flags.Int("increment-step")
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failureThreshold := flags.Int("failure-threshold")
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incrementInterval := flags.String("increment-interval")
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// check for time parsing
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_, err := time.ParseDuration(incrementInterval)
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if err != nil {
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return errors.Wrap(err, "error parsing time duration")
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}
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// check that the trigger exists in the same namespace.
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m, err := cmd.GetMetadata("httptrigger", "fnNamespace", flags)
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if err != nil {
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return errors.Wrap(err, "error finding http trigger in given namespace")
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}
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htTrigger, err := opts.client.HTTPTriggerGet(m)
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if err != nil {
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return errors.Wrap(err, "error finding trigger referenced in the canary config")
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}
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// check that the trigger has function reference type function weights
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if htTrigger.Spec.FunctionReference.Type != types.FunctionReferenceTypeFunctionWeights {
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return errors.New("canary config cannot be created for http triggers that do not reference functions by weights")
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}
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// check that the trigger references same functions in the function weights
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_, ok := htTrigger.Spec.FunctionReference.FunctionWeights[newFunc]
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if !ok {
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return fmt.Errorf("HTTP Trigger doesn't reference the function %s in Canary Config", newFunc)
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}
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_, ok = htTrigger.Spec.FunctionReference.FunctionWeights[oldFunc]
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if !ok {
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return fmt.Errorf("HTTP Trigger doesn't reference the function %s in Canary Config", oldFunc)
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}
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// check that the functions exist in the same namespace
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fnList := []string{newFunc, oldFunc}
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err = util.CheckFunctionExistence(opts.client, fnList, ns)
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if err != nil {
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return errors.Wrap(err, "error checking functions existence")
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}
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canaryMetadata, err := cmd.GetMetadata("name", "fnNamespace", flags)
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if err != nil {
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return err
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}
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// finally create canaryCfg in the same namespace as the functions referenced
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opts.canary = &fv1.CanaryConfig{
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Metadata: *canaryMetadata,
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Spec: fv1.CanaryConfigSpec{
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Trigger: trigger,
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NewFunction: newFunc,
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OldFunction: oldFunc,
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WeightIncrement: incrementStep,
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WeightIncrementDuration: incrementInterval,
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FailureThreshold: failureThreshold,
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FailureType: fv1.FailureTypeStatusCode,
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},
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Status: fv1.CanaryConfigStatus{
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Status: fv1.CanaryConfigStatusPending,
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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(flags cli.Input) error {
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_, err := opts.client.CanaryConfigCreate(opts.canary)
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if err != nil {
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return errors.Wrap(err, "error creating canary config")
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}
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fmt.Printf("canary config '%v' created\n", opts.canary.Metadata.Name)
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return nil
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}
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