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spyadapter.go
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spyadapter.go
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// Copyright 2017 Istio 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.
// NOTE: TODO : Auto-generate this file for given templates
// Codegen blocks
// apa template
//go:generate $GOPATH/src/istio.io/istio/bin/mixer_codegen.sh -d false -t mixer/test/spyAdapter/template/apa/tmpl.proto
// check template
//go:generate $GOPATH/src/istio.io/istio/bin/mixer_codegen.sh -d false -t mixer/test/spyAdapter/template/check/tmpl.proto
// report template
//go:generate $GOPATH/src/istio.io/istio/bin/mixer_codegen.sh -d false -t mixer/test/spyAdapter/template/report/reporttmpl.proto
// quota template
//go:generate $GOPATH/src/istio.io/istio/bin/mixer_codegen.sh -t mixer/test/spyAdapter/template/quota/quotatmpl.proto
// Package spyAdapter is intended for Mixer testing *ONLY*.
package spyAdapter
import (
"context"
"time"
"github.com/gogo/protobuf/types"
"istio.io/istio/mixer/pkg/adapter"
apaTmpl "istio.io/istio/mixer/test/spyAdapter/template/apa"
checkTmpl "istio.io/istio/mixer/test/spyAdapter/template/check"
quotaTmpl "istio.io/istio/mixer/test/spyAdapter/template/quota"
reportTmpl "istio.io/istio/mixer/test/spyAdapter/template/report"
)
type (
// Adapter is a fake Adapter. It is used for controlling the Adapter's behavior as well as
// inspect the input values that adapter receives from Mixer
Adapter struct {
Behavior AdapterBehavior
BuilderData *builderData
HandlerData *handlerData
}
// AdapterBehavior defines the behavior of the Adapter
// nolint: maligned
AdapterBehavior struct {
Name string
Builder BuilderBehavior
Handler HandlerBehavior
}
// HandlerBehavior defines the behavior of the Handler
// nolint: maligned
HandlerBehavior struct {
HandleSampleReportErr error
HandleSampleReportPanic bool
HandleSampleReportSleep time.Duration
HandleSampleCheckResult adapter.CheckResult
HandleSampleCheckErr error
HandleSampleCheckPanic bool
HandleSampleCheckSleep time.Duration
HandleSampleQuotaResult adapter.QuotaResult
HandleSampleQuotaErr error
HandleSampleQuotaPanic bool
HandleSampleQuotaSleep time.Duration
GenerateSampleApaErr error
GenerateSampleApaOutput *apaTmpl.Output
GenerateSampleApaPanic bool
GenerateSampleApaSleep time.Duration
CloseErr error
ClosePanic bool
}
// BuilderBehavior defines the behavior of the Builder
// nolint: maligned
BuilderBehavior struct {
SetSampleReportTypesPanic bool
SetSampleCheckTypesPanic bool
SetSampleQuotaTypesPanic bool
SetAdapterConfigPanic bool
ValidateErr *adapter.ConfigErrors
ValidatePanic bool
BuildErr error
BuildPanic bool
}
// nolint: maligned
builder struct {
builderBehavior BuilderBehavior
handlerBehavior HandlerBehavior
builderData *builderData
handlerData *handlerData
}
handler struct {
behavior HandlerBehavior
data *handlerData
}
handlerData struct {
CapturedCalls []CapturedCall
CloseCount int
}
// CapturedCall describes a call into the adapter.
CapturedCall struct {
Name string
Instances []interface{}
}
builderData struct {
// no of time called
SetSampleReportTypesCount int
// no of time called
SetSampleQuotaTypesCount int
// input to the method
SetTypes map[string]interface{}
// no of time called
SetSampleCheckTypesCount int
SetAdapterConfigAdptCfg adapter.Config
SetAdapterConfigCount int
ValidateCount int
BuildCount int
BuildCtx context.Context
BuildEnv adapter.Env
}
)
var _ reportTmpl.HandlerBuilder = builder{}
var _ apaTmpl.HandlerBuilder = builder{}
var _ checkTmpl.HandlerBuilder = builder{}
var _ reportTmpl.Handler = handler{}
var _ apaTmpl.Handler = handler{}
var _ checkTmpl.Handler = handler{}
func (b builder) Build(ctx context.Context, env adapter.Env) (adapter.Handler, error) {
b.builderData.BuildCount++
if b.builderBehavior.BuildPanic {
panic("Build")
}
b.builderData.BuildCtx = ctx
b.builderData.BuildEnv = env
return handler{behavior: b.handlerBehavior, data: b.handlerData}, b.builderBehavior.BuildErr
}
func (b builder) SetSampleCheckTypes(typeParams map[string]*checkTmpl.Type) {
b.builderData.SetSampleCheckTypesCount++
b.builderData.SetTypes = make(map[string]interface{}, len(typeParams))
for k, v := range typeParams {
b.builderData.SetTypes[k] = v
}
if b.builderBehavior.SetSampleCheckTypesPanic {
panic("SetSampleCheckTypes")
}
}
func (b builder) SetSampleQuotaTypes(typeParams map[string]*quotaTmpl.Type) {
b.builderData.SetSampleQuotaTypesCount++
b.builderData.SetTypes = make(map[string]interface{}, len(typeParams))
for k, v := range typeParams {
b.builderData.SetTypes[k] = v
}
if b.builderBehavior.SetSampleQuotaTypesPanic {
panic("SetSampleQuotaTypes")
}
}
func (b builder) SetSampleReportTypes(typeParams map[string]*reportTmpl.Type) {
b.builderData.SetSampleReportTypesCount++
b.builderData.SetTypes = make(map[string]interface{}, len(typeParams))
for k, v := range typeParams {
b.builderData.SetTypes[k] = v
}
if b.builderBehavior.SetSampleReportTypesPanic {
panic("SetSampleReportTypes")
}
}
func (b builder) SetAdapterConfig(cfg adapter.Config) {
b.builderData.SetAdapterConfigCount++
b.builderData.SetAdapterConfigAdptCfg = cfg
if b.builderBehavior.SetAdapterConfigPanic {
panic("SetAdapterConfig")
}
}
func (b builder) Validate() *adapter.ConfigErrors {
b.builderData.ValidateCount++
if b.builderBehavior.ValidatePanic {
panic("Validate")
}
return b.builderBehavior.ValidateErr
}
func (h handler) HandleSampleCheck(ctx context.Context, instance *checkTmpl.Instance) (adapter.CheckResult, error) {
c := CapturedCall{
Name: "HandleSampleCheck",
Instances: []interface{}{instance},
}
if h.data.CapturedCalls == nil {
h.data.CapturedCalls = []CapturedCall{}
}
h.data.CapturedCalls = append(h.data.CapturedCalls, c)
if h.behavior.HandleSampleCheckPanic {
panic("HandleSampleCheck")
}
time.Sleep(h.behavior.HandleSampleCheckSleep)
return h.behavior.HandleSampleCheckResult, h.behavior.HandleSampleCheckErr
}
func (h handler) HandleSampleQuota(ctx context.Context, instance *quotaTmpl.Instance, args adapter.QuotaArgs) (adapter.QuotaResult, error) {
c := CapturedCall{
Name: "HandleSampleQuota",
Instances: []interface{}{instance},
}
if h.data.CapturedCalls == nil {
h.data.CapturedCalls = []CapturedCall{}
}
h.data.CapturedCalls = append(h.data.CapturedCalls, c)
if h.behavior.HandleSampleQuotaPanic {
panic("HandleSampleQuota")
}
time.Sleep(h.behavior.HandleSampleQuotaSleep)
return h.behavior.HandleSampleQuotaResult, h.behavior.HandleSampleQuotaErr
}
func (h handler) HandleSampleReport(ctx context.Context, instances []*reportTmpl.Instance) error {
c := CapturedCall{
Name: "HandleSampleReport",
Instances: make([]interface{}, len(instances)),
}
for i, ins := range instances {
c.Instances[i] = ins
}
if h.data.CapturedCalls == nil {
h.data.CapturedCalls = []CapturedCall{}
}
h.data.CapturedCalls = append(h.data.CapturedCalls, c)
if h.behavior.HandleSampleReportPanic {
panic("HandleSampleReport")
}
time.Sleep(h.behavior.HandleSampleReportSleep)
return h.behavior.HandleSampleReportErr
}
func (h handler) GenerateSampleApaAttributes(ctx context.Context, instance *apaTmpl.Instance) (*apaTmpl.Output, error) {
c := CapturedCall{
Name: "HandleSampleApaAttributes",
Instances: []interface{}{instance},
}
if h.data.CapturedCalls == nil {
h.data.CapturedCalls = []CapturedCall{}
}
h.data.CapturedCalls = append(h.data.CapturedCalls, c)
if h.behavior.GenerateSampleApaPanic {
panic("GenerateSampleApaAttributes")
}
time.Sleep(h.behavior.GenerateSampleApaSleep)
return h.behavior.GenerateSampleApaOutput, h.behavior.GenerateSampleApaErr
}
func (h handler) Close() error {
h.data.CloseCount++
if h.behavior.ClosePanic {
panic("Close")
}
return h.behavior.CloseErr
}
// NewSpyAdapter returns a new instance of Adapter with the given behavior
func NewSpyAdapter(b AdapterBehavior) *Adapter {
if b.Handler.GenerateSampleApaOutput == nil {
b.Handler.GenerateSampleApaOutput = apaTmpl.NewOutput()
}
return &Adapter{Behavior: b, BuilderData: &builderData{}, HandlerData: &handlerData{}}
}
// GetAdptInfoFn returns the infoFn for the Adapter.
func (s *Adapter) GetAdptInfoFn() adapter.InfoFn {
return func() adapter.Info {
return adapter.Info{
Name: s.Behavior.Name,
Description: "",
SupportedTemplates: []string{reportTmpl.TemplateName, apaTmpl.TemplateName,
checkTmpl.TemplateName, quotaTmpl.TemplateName},
NewBuilder: func() adapter.HandlerBuilder {
return builder{
builderBehavior: s.Behavior.Builder,
builderData: s.BuilderData,
handlerBehavior: s.Behavior.Handler,
handlerData: s.HandlerData,
}
},
DefaultConfig: &types.Empty{},
Impl: "ThisIsASpyAdapter",
}
}
}