| // Copyright 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 grpcready |
| |
| import ( |
| "fmt" |
| "sync" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pilot/cmd/pilot-agent/status/ready" |
| "github.com/apache/dubbo-go-pixiu/pkg/file" |
| "github.com/apache/dubbo-go-pixiu/pkg/istio-agent/grpcxds" |
| ) |
| |
| var _ ready.Prober = &probe{} |
| |
| type probe struct { |
| sync.RWMutex |
| bootstrapPath string |
| bootstrap *grpcxds.Bootstrap |
| } |
| |
| // NewProbe returns a probe that checks if a valid bootstrap file can be loaded once. |
| // If that bootstrap file has a file_watcher cert provider, we also ensure those certs exist. |
| func NewProbe(bootstrapPath string) ready.Prober { |
| return &probe{bootstrapPath: bootstrapPath} |
| } |
| |
| func (p *probe) Check() error { |
| // TODO file watch? |
| if p.getBootstrap() == nil { |
| bootstrap, err := grpcxds.LoadBootstrap(p.bootstrapPath) |
| if err != nil { |
| return fmt.Errorf("failed loading %s: %v", p.bootstrapPath, err) |
| } |
| p.setBootstrap(bootstrap) |
| } |
| if bootstrap := p.getBootstrap(); bootstrap != nil { |
| if fwp := bootstrap.FileWatcherProvider(); fwp != nil { |
| for _, path := range fwp.FilePaths() { |
| if !file.Exists(path) { |
| return fmt.Errorf("%s does not exist", path) |
| } |
| } |
| } |
| } |
| return nil |
| } |
| |
| func (p *probe) getBootstrap() *grpcxds.Bootstrap { |
| p.RLock() |
| defer p.RUnlock() |
| return p.bootstrap |
| } |
| |
| func (p *probe) setBootstrap(bootstrap *grpcxds.Bootstrap) { |
| p.Lock() |
| defer p.Unlock() |
| p.bootstrap = bootstrap |
| } |