自定义 Istio Mixer Adapter 示例教程
Istio Mixer Adapter 是 Istio 中的一个组件,用于将 Istio 的策略和遥测系统与其他系统集成。自定义 Istio Mixer Adapter 可以让用户根据自己的需求实现特定的功能。本示例教程将介绍如何创建一个自定义 Istio Mixer Adapter。
Istio Mixer Adapter 是 Istio 中的一个组件,用于将 Istio 的策略和遥测系统与其他系统集成。自定义 Istio Mixer Adapter 可以让用户根据自己的需求实现特定的功能。
在开始之前,请确保您已经安装了以下软件:
go get github.com/istio/istio/mixer/adapter
go get github.com/istio/istio/mixer/pkg/adapter
go get github.com/istio/istio/mixer/template
package main
import (
"context"
"fmt"
"github.com/istio/istio/mixer/adapter/config"
"github.com/istio/istio/mixer/pkg/adapter"
"github.com/istio/istio/mixer/template/metric"
)
type CustomAdapter struct {
config *config.Params
}
func (a *CustomAdapter) Close() error {
return nil
}
func (a *CustomAdapter) GenerateMetric(ctx context.Context, insts []*metric.Instance) error {
for _, inst := range insts {
fmt.Printf("Received metric: %v\n", inst)
}
return nil
}
func (a *CustomAdapter) Validate() error {
return nil
}
func (a *CustomAdapter) Setup(cfg *config.Params) error {
a.config = cfg
return nil
}
func (a *CustomAdapter) String() string {
return "custom adapter"
}
func (a *CustomAdapter) Implements() []adapter.Implemented {
return []adapter.Implemented{
&metric.HandlerBuilder{},
}
}
func (a *CustomAdapter) NewBuilder(kind string) (adapter.HandlerBuilder, error) {
switch kind {
case "custom":
return &CustomBuilder{}, nil
default:
return nil, fmt.Errorf("unknown handler kind %q", kind)
}
}
type CustomBuilder struct {
adapter *CustomAdapter
}
func (b *CustomBuilder) SetAdapter(adapter adapter.Handler) {
b.adapter = adapter.(*CustomAdapter)
}
func (b *CustomBuilder) Build(ctx context.Context, env adapter.Env) (adapter.Handler, error) {
return b.adapter, nil
}
func (b *CustomBuilder) Validate() error {
return nil
}
func (b *CustomBuilder) SetMetricTypes(types map[string]metric.Type) {
}
func (b *CustomBuilder) Implements() []adapter.Implemented {
return []adapter.Implemented{
&metric.HandlerBuilder{},
}
}
func (b *CustomBuilder) SetAdapterConfig(cfg adapter.Config) {
}
func main() {
adapter.Register("custom", &CustomAdapter{})
adapter.Run()
}
go build -o customadapter
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