Ta-Ching ChenandGitHub
bfbb80efcf
This PR adds an interface for controller API client, it allows us to implement mock API client for unit testing with ease and we are able to generate spec file without accessing the real Fission server.
133 lines
4.1 KiB
Go
133 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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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/fission-cli/cliwrapper/cli"
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"github.com/fission/fission/pkg/fission-cli/cmd"
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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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"github.com/fission/fission/pkg/types"
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)
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type CreateSubCommand struct {
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cmd.CommandActioner
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canary *fv1.CanaryConfig
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}
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func Create(input cli.Input) error {
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return (&CreateSubCommand{}).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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// canary configs can be created for functions in the same namespace
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name := input.String(flagkey.CanaryName)
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ht := input.String(flagkey.CanaryHTTPTriggerName)
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newFunc := input.String(flagkey.CanaryNewFunc)
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oldFunc := input.String(flagkey.CanaryOldFunc)
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fnNs := input.String(flagkey.NamespaceFunction)
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incrementStep := input.Int(flagkey.CanaryWeightIncrement)
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failureThreshold := input.Int(flagkey.CanaryFailureThreshold)
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incrementInterval := input.String(flagkey.CanaryIncrementInterval)
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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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htTrigger, err := opts.Client().V1().HTTPTrigger().Get(&metav1.ObjectMeta{
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Name: ht,
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Namespace: fnNs,
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})
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if err != nil {
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return errors.Wrap(err, "error finding http 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, fnNs)
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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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// finally create canaryCfg in the same namespace as the functions referenced
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opts.canary = &fv1.CanaryConfig{
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Metadata: metav1.ObjectMeta{
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Name: name,
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Namespace: fnNs,
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},
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Spec: fv1.CanaryConfigSpec{
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Trigger: ht,
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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(input cli.Input) error {
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_, err := opts.Client().V1().CanaryConfig().Create(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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