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template.gen.go
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template.gen.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.
// THIS FILE IS AUTOMATICALLY GENERATED.
package template
import (
"context"
"fmt"
"net"
"strings"
"github.com/gogo/protobuf/proto"
istio_adapter_model_v1beta1 "istio.io/api/mixer/adapter/model/v1beta1"
istio_policy_v1beta1 "istio.io/api/policy/v1beta1"
"istio.io/istio/mixer/pkg/adapter"
"istio.io/istio/mixer/pkg/attribute"
"istio.io/istio/mixer/pkg/lang/ast"
"istio.io/istio/mixer/pkg/lang/compiled"
"istio.io/istio/mixer/pkg/template"
"istio.io/istio/pkg/log"
adapter_template_kubernetes "istio.io/istio/mixer/adapter/kubernetesenv/template"
"istio.io/istio/mixer/adapter/servicecontrol/template/servicecontrolreport"
"istio.io/istio/mixer/template/apikey"
"istio.io/istio/mixer/template/authorization"
"istio.io/istio/mixer/template/checknothing"
"istio.io/istio/mixer/template/edge"
"istio.io/istio/mixer/template/listentry"
"istio.io/istio/mixer/template/logentry"
"istio.io/istio/mixer/template/metric"
"istio.io/istio/mixer/template/quota"
"istio.io/istio/mixer/template/reportnothing"
"istio.io/istio/mixer/template/tracespan"
"time"
)
// Add void usages for some imports so that go linter does not complain in case the imports does not get used in the
// below codegen.
var (
_ net.IP
_ istio_policy_v1beta1.AttributeManifest
_ = strings.Reader{}
)
type (
getFn func(name string) (value interface{}, found bool)
namesFn func() []string
doneFn func()
debugStringFn func() string
wrapperAttr struct {
get getFn
names namesFn
done doneFn
debugString debugStringFn
}
)
func newWrapperAttrBag(get getFn, names namesFn, done doneFn, debugString debugStringFn) attribute.Bag {
return &wrapperAttr{
debugString: debugString,
done: done,
get: get,
names: names,
}
}
// Get returns an attribute value.
func (w *wrapperAttr) Get(name string) (value interface{}, found bool) {
return w.get(name)
}
// Contains returns true if key is present.
func (w *wrapperAttr) Contains(key string) (found bool) {
_, found = w.get(key)
return found
}
// Names returns the names of all the attributes known to this bag.
func (w *wrapperAttr) Names() []string {
return w.names()
}
// Done indicates the bag can be reclaimed.
func (w *wrapperAttr) Done() {
w.done()
}
// String provides a dump of an attribute Bag that avoids affecting the
// calculation of referenced attributes.
func (w *wrapperAttr) String() string {
return w.debugString()
}
var (
SupportedTmplInfo = map[string]template.Info{
adapter_template_kubernetes.TemplateName: {
Name: adapter_template_kubernetes.TemplateName,
Impl: "adapter.template.kubernetes",
CtrCfg: &adapter_template_kubernetes.InstanceParam{},
Variety: istio_adapter_model_v1beta1.TEMPLATE_VARIETY_ATTRIBUTE_GENERATOR,
BldrInterfaceName: adapter_template_kubernetes.TemplateName + "." + "HandlerBuilder",
HndlrInterfaceName: adapter_template_kubernetes.TemplateName + "." + "Handler",
BuilderSupportsTemplate: func(hndlrBuilder adapter.HandlerBuilder) bool {
_, ok := hndlrBuilder.(adapter_template_kubernetes.HandlerBuilder)
return ok
},
HandlerSupportsTemplate: func(hndlr adapter.Handler) bool {
_, ok := hndlr.(adapter_template_kubernetes.Handler)
return ok
},
InferType: func(cp proto.Message, tEvalFn template.TypeEvalFn) (proto.Message, error) {
var BuildTemplate func(param *adapter_template_kubernetes.InstanceParam,
path string) (proto.Message, error)
_ = BuildTemplate
BuildTemplate = func(param *adapter_template_kubernetes.InstanceParam,
path string) (proto.Message, error) {
if param == nil {
return nil, nil
}
var err error = nil
if param.SourceUid != "" {
if t, e := tEvalFn(param.SourceUid); e != nil || t != istio_policy_v1beta1.STRING {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"SourceUid", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"SourceUid", t, istio_policy_v1beta1.STRING)
}
}
if param.SourceIp != "" {
if t, e := tEvalFn(param.SourceIp); e != nil || t != istio_policy_v1beta1.IP_ADDRESS {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"SourceIp", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"SourceIp", t, istio_policy_v1beta1.IP_ADDRESS)
}
}
if param.DestinationUid != "" {
if t, e := tEvalFn(param.DestinationUid); e != nil || t != istio_policy_v1beta1.STRING {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"DestinationUid", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"DestinationUid", t, istio_policy_v1beta1.STRING)
}
}
if param.DestinationIp != "" {
if t, e := tEvalFn(param.DestinationIp); e != nil || t != istio_policy_v1beta1.IP_ADDRESS {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"DestinationIp", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"DestinationIp", t, istio_policy_v1beta1.IP_ADDRESS)
}
}
if param.DestinationPort != "" {
if t, e := tEvalFn(param.DestinationPort); e != nil || t != istio_policy_v1beta1.INT64 {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"DestinationPort", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"DestinationPort", t, istio_policy_v1beta1.INT64)
}
}
return nil, err
}
instParam := cp.(*adapter_template_kubernetes.InstanceParam)
const fullOutName = "adapter_template_kubernetes.output."
for attr, exp := range instParam.AttributeBindings {
expr := strings.Replace(exp, "$out.", fullOutName, -1)
t1, err := tEvalFn(expr)
if err != nil {
return nil, fmt.Errorf("error evaluating AttributeBinding expression '%s' for attribute '%s': %v", expr, attr, err)
}
t2, err := tEvalFn(attr)
if err != nil {
return nil, fmt.Errorf("error evaluating AttributeBinding expression for attribute key '%s': %v", attr, err)
}
if t1 != t2 {
return nil, fmt.Errorf(
"error evaluating AttributeBinding: type '%v' for attribute '%s' does not match type '%s' for expression '%s'",
t2, attr, t1, expr)
}
}
return BuildTemplate(instParam, "")
},
AttributeManifests: []*istio_policy_v1beta1.AttributeManifest{
{
Attributes: map[string]*istio_policy_v1beta1.AttributeManifest_AttributeInfo{
"adapter_template_kubernetes.output.source_pod_uid": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.source_pod_ip": {
ValueType: istio_policy_v1beta1.IP_ADDRESS,
},
"adapter_template_kubernetes.output.source_pod_name": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.source_labels": {
ValueType: istio_policy_v1beta1.STRING_MAP,
},
"adapter_template_kubernetes.output.source_namespace": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.source_service_account_name": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.source_host_ip": {
ValueType: istio_policy_v1beta1.IP_ADDRESS,
},
"adapter_template_kubernetes.output.source_workload_uid": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.source_workload_name": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.source_workload_namespace": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.source_owner": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.destination_pod_uid": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.destination_pod_ip": {
ValueType: istio_policy_v1beta1.IP_ADDRESS,
},
"adapter_template_kubernetes.output.destination_pod_name": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.destination_container_name": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.destination_labels": {
ValueType: istio_policy_v1beta1.STRING_MAP,
},
"adapter_template_kubernetes.output.destination_namespace": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.destination_service_account_name": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.destination_host_ip": {
ValueType: istio_policy_v1beta1.IP_ADDRESS,
},
"adapter_template_kubernetes.output.destination_owner": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.destination_workload_uid": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.destination_workload_name": {
ValueType: istio_policy_v1beta1.STRING,
},
"adapter_template_kubernetes.output.destination_workload_namespace": {
ValueType: istio_policy_v1beta1.STRING,
},
},
},
},
// DispathGenAttrs dispatches the instance to the attribute producing handler.
DispatchGenAttrs: func(ctx context.Context, handler adapter.Handler, inst interface{}, attrs attribute.Bag,
mapper template.OutputMapperFn) (*attribute.MutableBag, error) {
// Convert the instance from the generic interface{}, to their specialized type.
instance := inst.(*adapter_template_kubernetes.Instance)
// Invoke the handler.
out, err := handler.(adapter_template_kubernetes.Handler).GenerateKubernetesAttributes(ctx, instance)
if err != nil {
return nil, err
}
// Construct a wrapper bag around the returned output message and pass it to the output mapper
// to map $out values back to the destination attributes in the ambient context.
const fullOutName = "adapter_template_kubernetes.output."
outBag := newWrapperAttrBag(
func(name string) (value interface{}, found bool) {
field := strings.TrimPrefix(name, fullOutName)
if len(field) != len(name) {
if !out.WasSet(field) {
return nil, false
}
switch field {
case "source_pod_uid":
return out.SourcePodUid, true
case "source_pod_ip":
return []byte(out.SourcePodIp), true
case "source_pod_name":
return out.SourcePodName, true
case "source_labels":
return attribute.WrapStringMap(out.SourceLabels), true
case "source_namespace":
return out.SourceNamespace, true
case "source_service_account_name":
return out.SourceServiceAccountName, true
case "source_host_ip":
return []byte(out.SourceHostIp), true
case "source_workload_uid":
return out.SourceWorkloadUid, true
case "source_workload_name":
return out.SourceWorkloadName, true
case "source_workload_namespace":
return out.SourceWorkloadNamespace, true
case "source_owner":
return out.SourceOwner, true
case "destination_pod_uid":
return out.DestinationPodUid, true
case "destination_pod_ip":
return []byte(out.DestinationPodIp), true
case "destination_pod_name":
return out.DestinationPodName, true
case "destination_container_name":
return out.DestinationContainerName, true
case "destination_labels":
return attribute.WrapStringMap(out.DestinationLabels), true
case "destination_namespace":
return out.DestinationNamespace, true
case "destination_service_account_name":
return out.DestinationServiceAccountName, true
case "destination_host_ip":
return []byte(out.DestinationHostIp), true
case "destination_owner":
return out.DestinationOwner, true
case "destination_workload_uid":
return out.DestinationWorkloadUid, true
case "destination_workload_name":
return out.DestinationWorkloadName, true
case "destination_workload_namespace":
return out.DestinationWorkloadNamespace, true
default:
return nil, false
}
}
return attrs.Get(name)
},
func() []string { return attrs.Names() },
func() { attrs.Done() },
func() string { return attrs.String() },
)
// Mapper will map back $out values in the outBag into ambient attribute names, and return
// a bag with these additional attributes.
return mapper(outBag)
},
// CreateInstanceBuilder creates a new template.InstanceBuilderFN based on the supplied instance parameters. It uses
// the expression builder to create a new instance of a builder struct for the instance type. Created
// InstanceBuilderFn closes over this struct. When InstanceBuilderFn is called it, in turn, calls into
// the builder with an attribute bag.
//
// See template.CreateInstanceBuilderFn for more details.
CreateInstanceBuilder: func(instanceName string, param proto.Message, expb *compiled.ExpressionBuilder) (template.InstanceBuilderFn, error) {
// If the parameter is nil. Simply return nil. The builder, then, will also return nil.
if param == nil {
return func(attr attribute.Bag) (interface{}, error) {
return nil, nil
}, nil
}
// Instantiate a new builder for the instance.
builder, errp := newBuilder_adapter_template_kubernetes_Template(expb, param.(*adapter_template_kubernetes.InstanceParam))
if !errp.IsNil() {
return nil, errp.AsCompilationError(instanceName)
}
return func(attr attribute.Bag) (interface{}, error) {
// Use the instantiated builder (that this fn closes over) to construct an instance.
e, errp := builder.build(attr)
if !errp.IsNil() {
err := errp.AsEvaluationError(instanceName)
log.Error(err.Error())
return nil, err
}
e.Name = instanceName
return e, nil
}, nil
},
// CreateOutputExpressions creates a set of compiled expressions based on the supplied instance parameters.
//
// See template.CreateOutputExpressionsFn for more details.
CreateOutputExpressions: func(
instanceParam proto.Message,
finder ast.AttributeDescriptorFinder,
expb *compiled.ExpressionBuilder) (map[string]compiled.Expression, error) {
var err error
var expType istio_policy_v1beta1.ValueType
// Convert the generic instanceParam to its specialized type.
param := instanceParam.(*adapter_template_kubernetes.InstanceParam)
// Create a mapping of expressions back to the attribute names.
expressions := make(map[string]compiled.Expression, len(param.AttributeBindings))
const fullOutName = "adapter_template_kubernetes.output."
for attrName, outExpr := range param.AttributeBindings {
attrInfo := finder.GetAttribute(attrName)
if attrInfo == nil {
log.Warnf("attribute not found when mapping outputs: attr='%s', expr='%s'", attrName, outExpr)
continue
}
ex := strings.Replace(outExpr, "$out.", fullOutName, -1)
if expressions[attrName], expType, err = expb.Compile(ex); err != nil {
return nil, err
}
if attrInfo.ValueType != expType {
log.Warnf("attribute type mismatch: attr='%s', attrType='%v', expr='%s', exprType='%v'", attrName, attrInfo.ValueType, outExpr, expType)
continue
}
}
return expressions, nil
},
},
servicecontrolreport.TemplateName: {
Name: servicecontrolreport.TemplateName,
Impl: "servicecontrolreport",
CtrCfg: &servicecontrolreport.InstanceParam{},
Variety: istio_adapter_model_v1beta1.TEMPLATE_VARIETY_REPORT,
BldrInterfaceName: servicecontrolreport.TemplateName + "." + "HandlerBuilder",
HndlrInterfaceName: servicecontrolreport.TemplateName + "." + "Handler",
BuilderSupportsTemplate: func(hndlrBuilder adapter.HandlerBuilder) bool {
_, ok := hndlrBuilder.(servicecontrolreport.HandlerBuilder)
return ok
},
HandlerSupportsTemplate: func(hndlr adapter.Handler) bool {
_, ok := hndlr.(servicecontrolreport.Handler)
return ok
},
InferType: func(cp proto.Message, tEvalFn template.TypeEvalFn) (proto.Message, error) {
var BuildTemplate func(param *servicecontrolreport.InstanceParam,
path string) (*servicecontrolreport.Type, error)
_ = BuildTemplate
BuildTemplate = func(param *servicecontrolreport.InstanceParam,
path string) (*servicecontrolreport.Type, error) {
if param == nil {
return nil, nil
}
infrdType := &servicecontrolreport.Type{}
var err error = nil
if param.ApiVersion != "" {
if t, e := tEvalFn(param.ApiVersion); e != nil || t != istio_policy_v1beta1.STRING {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"ApiVersion", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"ApiVersion", t, istio_policy_v1beta1.STRING)
}
}
if param.ApiOperation != "" {
if t, e := tEvalFn(param.ApiOperation); e != nil || t != istio_policy_v1beta1.STRING {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"ApiOperation", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"ApiOperation", t, istio_policy_v1beta1.STRING)
}
}
if param.ApiProtocol != "" {
if t, e := tEvalFn(param.ApiProtocol); e != nil || t != istio_policy_v1beta1.STRING {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"ApiProtocol", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"ApiProtocol", t, istio_policy_v1beta1.STRING)
}
}
if param.ApiService != "" {
if t, e := tEvalFn(param.ApiService); e != nil || t != istio_policy_v1beta1.STRING {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"ApiService", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"ApiService", t, istio_policy_v1beta1.STRING)
}
}
if param.ApiKey != "" {
if t, e := tEvalFn(param.ApiKey); e != nil || t != istio_policy_v1beta1.STRING {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"ApiKey", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"ApiKey", t, istio_policy_v1beta1.STRING)
}
}
if param.RequestTime != "" {
if t, e := tEvalFn(param.RequestTime); e != nil || t != istio_policy_v1beta1.TIMESTAMP {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"RequestTime", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"RequestTime", t, istio_policy_v1beta1.TIMESTAMP)
}
}
if param.RequestMethod != "" {
if t, e := tEvalFn(param.RequestMethod); e != nil || t != istio_policy_v1beta1.STRING {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"RequestMethod", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"RequestMethod", t, istio_policy_v1beta1.STRING)
}
}
if param.RequestPath != "" {
if t, e := tEvalFn(param.RequestPath); e != nil || t != istio_policy_v1beta1.STRING {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"RequestPath", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"RequestPath", t, istio_policy_v1beta1.STRING)
}
}
if param.RequestBytes != "" {
if t, e := tEvalFn(param.RequestBytes); e != nil || t != istio_policy_v1beta1.INT64 {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"RequestBytes", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"RequestBytes", t, istio_policy_v1beta1.INT64)
}
}
if param.ResponseTime != "" {
if t, e := tEvalFn(param.ResponseTime); e != nil || t != istio_policy_v1beta1.TIMESTAMP {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"ResponseTime", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"ResponseTime", t, istio_policy_v1beta1.TIMESTAMP)
}
}
if param.ResponseCode != "" {
if t, e := tEvalFn(param.ResponseCode); e != nil || t != istio_policy_v1beta1.INT64 {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"ResponseCode", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"ResponseCode", t, istio_policy_v1beta1.INT64)
}
}
if param.ResponseBytes != "" {
if t, e := tEvalFn(param.ResponseBytes); e != nil || t != istio_policy_v1beta1.INT64 {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"ResponseBytes", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"ResponseBytes", t, istio_policy_v1beta1.INT64)
}
}
if param.ResponseLatency != "" {
if t, e := tEvalFn(param.ResponseLatency); e != nil || t != istio_policy_v1beta1.DURATION {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"ResponseLatency", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"ResponseLatency", t, istio_policy_v1beta1.DURATION)
}
}
return infrdType, err
}
instParam := cp.(*servicecontrolreport.InstanceParam)
return BuildTemplate(instParam, "")
},
SetType: func(types map[string]proto.Message, builder adapter.HandlerBuilder) {
// Mixer framework should have ensured the type safety.
castedBuilder := builder.(servicecontrolreport.HandlerBuilder)
castedTypes := make(map[string]*servicecontrolreport.Type, len(types))
for k, v := range types {
// Mixer framework should have ensured the type safety.
v1 := v.(*servicecontrolreport.Type)
castedTypes[k] = v1
}
castedBuilder.SetServicecontrolReportTypes(castedTypes)
},
// DispatchReport dispatches the instances to the handler.
DispatchReport: func(ctx context.Context, handler adapter.Handler, inst []interface{}) error {
// Convert the instances from the generic []interface{}, to their specialized type.
instances := make([]*servicecontrolreport.Instance, len(inst))
for i, instance := range inst {
instances[i] = instance.(*servicecontrolreport.Instance)
}
// Invoke the handler.
if err := handler.(servicecontrolreport.Handler).HandleServicecontrolReport(ctx, instances); err != nil {
return fmt.Errorf("failed to report all values: %v", err)
}
return nil
},
// CreateInstanceBuilder creates a new template.InstanceBuilderFN based on the supplied instance parameters. It uses
// the expression builder to create a new instance of a builder struct for the instance type. Created
// InstanceBuilderFn closes over this struct. When InstanceBuilderFn is called it, in turn, calls into
// the builder with an attribute bag.
//
// See template.CreateInstanceBuilderFn for more details.
CreateInstanceBuilder: func(instanceName string, param proto.Message, expb *compiled.ExpressionBuilder) (template.InstanceBuilderFn, error) {
// If the parameter is nil. Simply return nil. The builder, then, will also return nil.
if param == nil {
return func(attr attribute.Bag) (interface{}, error) {
return nil, nil
}, nil
}
// Instantiate a new builder for the instance.
builder, errp := newBuilder_servicecontrolreport_Template(expb, param.(*servicecontrolreport.InstanceParam))
if !errp.IsNil() {
return nil, errp.AsCompilationError(instanceName)
}
return func(attr attribute.Bag) (interface{}, error) {
// Use the instantiated builder (that this fn closes over) to construct an instance.
e, errp := builder.build(attr)
if !errp.IsNil() {
err := errp.AsEvaluationError(instanceName)
log.Error(err.Error())
return nil, err
}
e.Name = instanceName
return e, nil
}, nil
},
},
apikey.TemplateName: {
Name: apikey.TemplateName,
Impl: "apikey",
CtrCfg: &apikey.InstanceParam{},
Variety: istio_adapter_model_v1beta1.TEMPLATE_VARIETY_CHECK,
BldrInterfaceName: apikey.TemplateName + "." + "HandlerBuilder",
HndlrInterfaceName: apikey.TemplateName + "." + "Handler",
BuilderSupportsTemplate: func(hndlrBuilder adapter.HandlerBuilder) bool {
_, ok := hndlrBuilder.(apikey.HandlerBuilder)
return ok
},
HandlerSupportsTemplate: func(hndlr adapter.Handler) bool {
_, ok := hndlr.(apikey.Handler)
return ok
},
InferType: func(cp proto.Message, tEvalFn template.TypeEvalFn) (proto.Message, error) {
var BuildTemplate func(param *apikey.InstanceParam,
path string) (*apikey.Type, error)
_ = BuildTemplate
BuildTemplate = func(param *apikey.InstanceParam,
path string) (*apikey.Type, error) {
if param == nil {
return nil, nil
}
infrdType := &apikey.Type{}
var err error = nil
if param.Api != "" {
if t, e := tEvalFn(param.Api); e != nil || t != istio_policy_v1beta1.STRING {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"Api", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"Api", t, istio_policy_v1beta1.STRING)
}
}
if param.ApiVersion != "" {
if t, e := tEvalFn(param.ApiVersion); e != nil || t != istio_policy_v1beta1.STRING {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"ApiVersion", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"ApiVersion", t, istio_policy_v1beta1.STRING)
}
}
if param.ApiOperation != "" {
if t, e := tEvalFn(param.ApiOperation); e != nil || t != istio_policy_v1beta1.STRING {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"ApiOperation", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"ApiOperation", t, istio_policy_v1beta1.STRING)
}
}
if param.ApiKey != "" {
if t, e := tEvalFn(param.ApiKey); e != nil || t != istio_policy_v1beta1.STRING {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"ApiKey", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"ApiKey", t, istio_policy_v1beta1.STRING)
}
}
if param.Timestamp != "" {
if t, e := tEvalFn(param.Timestamp); e != nil || t != istio_policy_v1beta1.TIMESTAMP {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"Timestamp", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"Timestamp", t, istio_policy_v1beta1.TIMESTAMP)
}
}
return infrdType, err
}
instParam := cp.(*apikey.InstanceParam)
return BuildTemplate(instParam, "")
},
SetType: func(types map[string]proto.Message, builder adapter.HandlerBuilder) {
// Mixer framework should have ensured the type safety.
castedBuilder := builder.(apikey.HandlerBuilder)
castedTypes := make(map[string]*apikey.Type, len(types))
for k, v := range types {
// Mixer framework should have ensured the type safety.
v1 := v.(*apikey.Type)
castedTypes[k] = v1
}
castedBuilder.SetApiKeyTypes(castedTypes)
},
// DispatchCheck dispatches the instance to the handler.
DispatchCheck: func(ctx context.Context, handler adapter.Handler, inst interface{}, out *attribute.MutableBag, outPrefix string) (adapter.CheckResult, error) {
// Convert the instance from the generic interface{}, to its specialized type.
instance := inst.(*apikey.Instance)
// Invoke the handler.
return handler.(apikey.Handler).HandleApiKey(ctx, instance)
},
// CreateInstanceBuilder creates a new template.InstanceBuilderFN based on the supplied instance parameters. It uses
// the expression builder to create a new instance of a builder struct for the instance type. Created
// InstanceBuilderFn closes over this struct. When InstanceBuilderFn is called it, in turn, calls into
// the builder with an attribute bag.
//
// See template.CreateInstanceBuilderFn for more details.
CreateInstanceBuilder: func(instanceName string, param proto.Message, expb *compiled.ExpressionBuilder) (template.InstanceBuilderFn, error) {
// If the parameter is nil. Simply return nil. The builder, then, will also return nil.
if param == nil {
return func(attr attribute.Bag) (interface{}, error) {
return nil, nil
}, nil
}
// Instantiate a new builder for the instance.
builder, errp := newBuilder_apikey_Template(expb, param.(*apikey.InstanceParam))
if !errp.IsNil() {
return nil, errp.AsCompilationError(instanceName)
}
return func(attr attribute.Bag) (interface{}, error) {
// Use the instantiated builder (that this fn closes over) to construct an instance.
e, errp := builder.build(attr)
if !errp.IsNil() {
err := errp.AsEvaluationError(instanceName)
log.Error(err.Error())
return nil, err
}
e.Name = instanceName
return e, nil
}, nil
},
},
authorization.TemplateName: {
Name: authorization.TemplateName,
Impl: "authorization",
CtrCfg: &authorization.InstanceParam{},
Variety: istio_adapter_model_v1beta1.TEMPLATE_VARIETY_CHECK,
BldrInterfaceName: authorization.TemplateName + "." + "HandlerBuilder",
HndlrInterfaceName: authorization.TemplateName + "." + "Handler",
BuilderSupportsTemplate: func(hndlrBuilder adapter.HandlerBuilder) bool {
_, ok := hndlrBuilder.(authorization.HandlerBuilder)
return ok
},
HandlerSupportsTemplate: func(hndlr adapter.Handler) bool {
_, ok := hndlr.(authorization.Handler)
return ok
},
InferType: func(cp proto.Message, tEvalFn template.TypeEvalFn) (proto.Message, error) {
var BuildTemplate func(param *authorization.InstanceParam,
path string) (*authorization.Type, error)
_ = BuildTemplate
var BuildSubject func(param *authorization.SubjectInstanceParam,
path string) (*authorization.SubjectType, error)
_ = BuildSubject
var BuildAction func(param *authorization.ActionInstanceParam,
path string) (*authorization.ActionType, error)
_ = BuildAction
BuildTemplate = func(param *authorization.InstanceParam,
path string) (*authorization.Type, error) {
if param == nil {
return nil, nil
}
infrdType := &authorization.Type{}
var err error = nil
if param.Subject != nil {
if infrdType.Subject, err = BuildSubject(param.Subject, path+"Subject."); err != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s'; %v", path+"Subject", err)
}
}
if param.Action != nil {
if infrdType.Action, err = BuildAction(param.Action, path+"Action."); err != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s'; %v", path+"Action", err)
}
}
return infrdType, err
}
BuildSubject = func(param *authorization.SubjectInstanceParam,
path string) (*authorization.SubjectType, error) {
if param == nil {
return nil, nil
}
infrdType := &authorization.SubjectType{}
var err error = nil
if param.User != "" {
if t, e := tEvalFn(param.User); e != nil || t != istio_policy_v1beta1.STRING {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"User", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"User", t, istio_policy_v1beta1.STRING)
}
}
if param.Groups != "" {
if t, e := tEvalFn(param.Groups); e != nil || t != istio_policy_v1beta1.STRING {
if e != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s': %v", path+"Groups", e)
}
return nil, fmt.Errorf("error type checking for field '%s': Evaluated expression type %v want %v", path+"Groups", t, istio_policy_v1beta1.STRING)
}
}
infrdType.Properties = make(map[string]istio_policy_v1beta1.ValueType, len(param.Properties))
for k, v := range param.Properties {
if infrdType.Properties[k], err = tEvalFn(v); err != nil {
return nil, fmt.Errorf("failed to evaluate expression for field '%s%s[%s]'; %v", path, "Properties", k, err)
}
}