diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..d664a05 --- /dev/null +++ b/go.mod @@ -0,0 +1,8 @@ +module github.com/kubernetes-sigs/container-object-storage-interface-provisioner-sidecar + +go 1.14 + +require ( + google.golang.org/grpc v1.34.0 // indirect + k8s.io/klog v1.0.0 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..1f1ec4f --- /dev/null +++ b/go.sum @@ -0,0 +1,84 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= +github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= +github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4= +github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4= +github.com/envoyproxy/go-control-plane v0.9.7/go.mod h1:cwu0lG7PUMfa9snN8LXBig5ynNVH9qI8YYLbd1fK2po= +github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c= +github.com/go-logr/logr v0.1.0/go.mod h1:ixOQHD9gLJUVQQ2ZOR7zLEifBX6tGkNJF4QyIY7sIas= +github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q= +github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A= +github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8= +github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA= +github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs= +github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w= +github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0= +github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8= +github.com/golang/protobuf v1.4.2 h1:+Z5KGCizgyZCbGh1KZqA0fcLLkwbsjIzS4aV2v7wJX0= +github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI= +github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M= +github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= +github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= +github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= +github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= +github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo= +github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= +github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA= +github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= +github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA= +golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= +golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA= +golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE= +golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU= +golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc= +golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= +golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= +golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= +golang.org/x/net v0.0.0-20190311183353-d8887717615a h1:oWX7TPOiFAMXLq8o0ikBYfCJVlRHBcsciT5bXOrH628= +golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= +golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U= +golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= +golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= +golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg= +golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= +golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= +golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY= +golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs= +golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q= +golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= +google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM= +google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= +google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= +google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc= +google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013 h1:+kGHl1aib/qcwaRi1CbqBZ1rk19r85MNUf8HaBghugY= +google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo= +google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c= +google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg= +google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY= +google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk= +google.golang.org/grpc v1.34.0 h1:raiipEjMOIC/TO2AvyTxP25XFdLxNIBwzDh3FM3XztI= +google.golang.org/grpc v1.34.0/go.mod h1:WotjhfgOW/POjDeRt8vscBtXq+2VjORFy659qA51WJ8= +google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8= +google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0= +google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM= +google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE= +google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo= +google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU= +google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU= +google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU= +google.golang.org/protobuf v1.25.0 h1:Ejskq+SyPohKW+1uil0JJMtmHCgJPJ/qWTxr8qp+R4c= +google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= +honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= +k8s.io/klog v1.0.0 h1:Pt+yjF5aB1xDSVbau4VsWe+dQNzA0qv1LlXdC2dF6Q8= +k8s.io/klog v1.0.0/go.mod h1:4Bi6QPql/J/LkTDqv7R/cd3hPo4k2DG6Ptcz060Ez5I= diff --git a/pkg/grpcclient/client.go b/pkg/grpcclient/client.go new file mode 100644 index 0000000..a8441ad --- /dev/null +++ b/pkg/grpcclient/client.go @@ -0,0 +1,139 @@ +/* +Copyright 2020 The Kubernetes 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 grpcclient + +import ( + "context" + "errors" + "net" + "strings" + "time" + + "google.golang.org/grpc" + + "k8s.io/klog" +) + +type options struct { + reconnect func() bool +} + +// Option is the type of all optional parameters for Connect. +type Option func(o *options) + +type GRPCClient struct { + serverAddress string + dialOptions []grpc.DialOption +} + +// NewGRPCClient creates a new GRPCClient +func NewGRPCClient(address string, dialOptions []grpc.DialOption, connectOptions []Option) (*GRPCClient, error) { + var o options + for _, option := range connectOptions { + option(&o) + } + + dialOptions = append(dialOptions, + grpc.WithInsecure(), // Don't use TLS, it's usually local Unix domain socket in a container. + grpc.WithBackoffMaxDelay(time.Second), // Retry every second after failure. + grpc.WithBlock(), // Block until connection succeeds. + ) + + unixPrefix := "unix://" + if strings.HasPrefix(address, "tcp://") { + address = address[6:] + } + if strings.HasPrefix(address, "/") { + // It looks like filesystem path. + address = unixPrefix + address + } + + if strings.HasPrefix(address, unixPrefix) { + // state variables for the custom dialer + haveConnected := false + lostConnection := false + reconnect := true + + dialOptions = append(dialOptions, grpc.WithDialer(func(addr string, timeout time.Duration) (net.Conn, error) { + if haveConnected && !lostConnection { + // We have detected a loss of connection for the first time. Decide what to do... + // Record this once. TODO (?): log at regular time intervals. + klog.Errorf("Lost connection to %s.", address) + // Inform caller and let it decide? Default is to reconnect. + if o.reconnect != nil { + reconnect = o.reconnect() + } + lostConnection = true + } + if !reconnect { + return nil, errors.New("connection lost, reconnecting disabled") + } + conn, err := net.DialTimeout("unix", address[len(unixPrefix):], timeout) + if err == nil { + // Connection restablished. + haveConnected = true + lostConnection = false + } + return conn, err + })) + } else if o.reconnect != nil { + return nil, errors.New("OnConnectionLoss callback only supported for unix:// addresses") + } + + return &GRPCClient{serverAddress: address, dialOptions: dialOptions}, nil +} + +// Connect connects to the grpc server +func (c *GRPCClient) ConnectWithLogging(interval time.Duration) (*grpc.ClientConn, error) { + klog.Infof("Connecting to %s", c.serverAddress) + + grpcLogFunc := func(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error { + klog.V(5).Infof("GRPC call: %s", method) + klog.V(5).Infof("GRPC request: %s", req) + err := invoker(ctx, method, req, reply, cc, opts...) + klog.V(5).Infof("GRPC response: %s", reply) + klog.V(5).Infof("GRPC error: %v", err) + return err + } + + // Log all messages + c.dialOptions = append(c.dialOptions, grpc.WithChainUnaryInterceptor(grpcLogFunc)) + + // Connect in background. + var conn *grpc.ClientConn + var err error + ready := make(chan bool) + go func() { + conn, err = grpc.Dial(c.serverAddress, c.dialOptions...) + close(ready) + }() + + // Log error every connectionLoggingInterval + ticker := time.NewTicker(interval) + defer ticker.Stop() + + // Wait until Dial() succeeds. + for { + select { + case <-ticker.C: + klog.Warningf("Still connecting to %s", c.serverAddress) + + case <-ready: + return conn, err + } + } +} diff --git a/pkg/grpcserver/server.go b/pkg/grpcserver/server.go new file mode 100644 index 0000000..896b1de --- /dev/null +++ b/pkg/grpcserver/server.go @@ -0,0 +1,136 @@ +/* +Copyright 2020 The Kubernetes 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 grpcserver + +import ( + "fmt" + "net" + "os" + "strings" + "sync" + + "github.com/kubernetes-csi/csi-lib-utils/protosanitizer" + "golang.org/x/net/context" + "google.golang.org/grpc" + + osi "github.com/kubernetes-sigs/container-object-storage-interface-spec" + + "k8s.io/klog" +) + +// Defines Non blocking GRPC server interfaces +type NonBlockingGRPCServer interface { + // Start services at the endpoint + Start(endpoint string, cds osi.ProvisionerServer) + // Waits for the service to stop + Wait() + // Stops the service gracefully + Stop() + // Stops the service forcefully + ForceStop() +} + +func NewNonBlockingGRPCServer() NonBlockingGRPCServer { + return &nonBlockingGRPCServer{} +} + +// NonBlocking server +type nonBlockingGRPCServer struct { + wg sync.WaitGroup + server *grpc.Server +} + +func logGRPC(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) { + klog.Infof("GRPC call: %s", info.FullMethod) + klog.Infof("GRPC request: %s", protosanitizer.StripSecrets(req)) + resp, err := handler(ctx, req) + if err != nil { + klog.Errorf("GRPC error: %v", err) + } else { + klog.Infof("GRPC response: %s", protosanitizer.StripSecrets(resp)) + } + return resp, err +} + +func ParseEndpoint(ep string) (string, string, error) { + if strings.HasPrefix(strings.ToLower(ep), "unix://") || strings.HasPrefix(strings.ToLower(ep), "tcp://") { + s := strings.SplitN(ep, "://", 2) + if s[1] != "" { + return s[0], s[1], nil + } + } + return "", "", fmt.Errorf("Invalid endpoint: %v", ep) +} + +func (s *nonBlockingGRPCServer) Start(endpoint string, cds osi.ProvisionerServer) { + + s.wg.Add(1) + + go s.serve(endpoint, cds) + + return +} + +func (s *nonBlockingGRPCServer) Wait() { + s.wg.Wait() +} + +func (s *nonBlockingGRPCServer) Stop() { + s.server.GracefulStop() +} + +func (s *nonBlockingGRPCServer) ForceStop() { + s.server.Stop() +} + +func (s *nonBlockingGRPCServer) serve(endpoint string, driver osi.ProvisionerServer) { + + proto, addr, err := ParseEndpoint(endpoint) + if err != nil { + klog.Fatal(err.Error()) + } + + if proto == "unix" { + addr = "/" + addr + if err := os.Remove(addr); err != nil && !os.IsNotExist(err) { + klog.Fatalf("Failed to remove %s, error: %s", addr, err.Error()) + } + } + klog.Infof("Create listener on %s", endpoint) + + //listener, err := net.Listen("tcp", fmt.Sprintf(":%d", osi-port)) + listener, err := net.Listen(proto, addr) + if err != nil { + klog.Fatalf("Failed to listen: %v", err) + } + + opts := []grpc.ServerOption{ + grpc.UnaryInterceptor(logGRPC), + } + server := grpc.NewServer(opts...) + s.server = server + + klog.Infof("Registering CosiControllerServer") + if driver != nil { + osi.RegisterProvisionerServer(server, driver) + } + + klog.Infof("Listening for connections on address: %#v", listener.Addr()) + + server.Serve(listener) + +}