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controller.go
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controller.go
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// Copyright 2018 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.
package policy
import (
"context"
"github.com/gogo/protobuf/proto"
"google.golang.org/grpc"
)
// Controller is the control interface for the policy backend. The tests can use the interface to control the
// fake.
type Controller struct {
client ControllerServiceClient
}
// NewController creates and returns a new instance of a controller client for the backend.
func NewController(address string) (*Controller, error) {
conn, err := grpc.Dial(address, grpc.WithInsecure())
if err != nil {
return nil, err
}
c := NewControllerServiceClient(conn)
return &Controller{
client: c,
}, nil
}
// DenyCheck causes the policy backend to deny all check requests when set to true.
func (c *Controller) DenyCheck(deny bool) error {
s := newSettings().setDenyCheck(deny)
return c.send(s)
}
// GetReports returns the currently accumulated report instances.
func (c *Controller) GetReports() ([]proto.Message, error) {
request := &GetReportsRequest{}
response, err := c.client.GetReports(context.TODO(), request)
if err != nil {
return nil, err
}
result := make([]proto.Message, len(response.Instances))
for i, inst := range response.Instances {
p, err := fromAny(inst)
if err != nil {
return nil, err
}
result[i] = p
}
return result, nil
}
// Reset the state of the backend.
func (c *Controller) Reset() error {
request := &ResetRequest{}
_, err := c.client.Reset(context.TODO(), request)
return err
}
func (c *Controller) send(s settings) error {
var m map[string]string = s
request := &SetRequest{
Settings: m,
}
_, err := c.client.Set(context.TODO(), request)
return err
}