diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml index cfc5456..840fb8b 100644 --- a/.github/workflows/test.yaml +++ b/.github/workflows/test.yaml @@ -27,3 +27,5 @@ jobs: ${{ runner.os }}-go- - name: Test run: go test ./... + - name: Test Experimental SubModule + run: cd ./component/x && go test ./... && cd ../.. diff --git a/component/doc.go b/component/doc.go index 32d2b6f..189744f 100644 --- a/component/doc.go +++ b/component/doc.go @@ -2,45 +2,34 @@ Package component contains some commonly used implementations of long-running components like an HTTP server. - package component + package main import ( "context" - "net" + "fmt" + "net/http" + "os" + "os/signal" - "github.com/gojekfarm/xrun" - "google.golang.org/grpc" + "github.com/gojekfarm/xrun/component" ) - // GRPCServerOptions holds options for GRPCServer - type GRPCServerOptions struct { - Server *grpc.Server - Listener net.Listener - } - - // GRPCServer is a helper which returns an xrun.ComponentFunc to run a grpc.Server - func GRPCServer(opts GRPCServerOptions) xrun.ComponentFunc { - srv := opts.Server - l := opts.Listener - - return func(ctx context.Context) error { - errCh := make(chan error, 1) - go func() { - if err := srv.Serve(l); err != nil && err != grpc.ErrServerStopped { - errCh <- err - } - }() - - select { - case <-ctx.Done(): - case err := <-errCh: - - return err - } - - srv.GracefulStop() - - return nil + func main() { + c := component.HTTPServer(component.HTTPServerOptions{ + Server: &http.Server{}, + PreStart: func() { + fmt.Println("starting server") + }, + PreStop: func() { + fmt.Println("stopping server") + }, + }) + + ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, os.Kill) + defer stop() + + if err := c.Run(ctx); err != nil { + os.Exit(1) } } diff --git a/component/x/go.mod b/component/x/go.mod new file mode 100644 index 0000000..c833dd9 --- /dev/null +++ b/component/x/go.mod @@ -0,0 +1,10 @@ +module github.com/gojekfarm/xrun/component/x + +go 1.16 + +require ( + github.com/gojekfarm/xrun v0.2.0 + github.com/stretchr/testify v1.7.0 + golang.org/x/net v0.0.0-20210510120150-4163338589ed + google.golang.org/grpc v1.37.1 +) diff --git a/component/x/go.sum b/component/x/go.sum new file mode 100644 index 0000000..5414ead --- /dev/null +++ b/component/x/go.sum @@ -0,0 +1,100 @@ +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 v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk= +github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8= +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 v0.9.9-0.20210217033140-668b12f5399d/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk= +github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c= +github.com/gojekfarm/xrun v0.2.0 h1:NxtEOewvCDjYHiCJoEZf3HhrG4dxmp/PoH4l33+DNL8= +github.com/gojekfarm/xrun v0.2.0/go.mod h1:ymgP5BKWxVHYAFO23+0l0T8nu9qIKfMb3FCAcDSFBmE= +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= 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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 h1:/QaMHBdZ26BB3SSst0Iwl10Epc+xhTquomWX0oZEB6w= +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 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= +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 h1:4G4v2dO3VZwixGIRoQ5Lfboy6nUhCyYzaqnIAPPhYs4= +github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= +github.com/stretchr/testify 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+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +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= diff --git a/component/x/grpc/server.go b/component/x/grpc/server.go new file mode 100644 index 0000000..f0dfc37 --- /dev/null +++ b/component/x/grpc/server.go @@ -0,0 +1,59 @@ +package grpc + +import ( + "context" + "net" + + "github.com/gojekfarm/xrun" + "google.golang.org/grpc" +) + +// Options holds options for Server +type Options struct { + Server *grpc.Server + Listener net.Listener + PreStart func() + PreStop func() + PostStop func() +} + +// Server is a helper which returns a xrun.ComponentFunc to start a grpc.Server +func Server(opts Options) xrun.ComponentFunc { + srv := opts.Server + l := opts.Listener + ps := opts.PreStart + pst := opts.PreStop + pstp := opts.PostStop + + return func(ctx context.Context) error { + errCh := make(chan error, 1) + + go func(errCh chan error) { + if ps != nil { + ps() + } + + if err := srv.Serve(l); err != nil && err != grpc.ErrServerStopped { + errCh <- err + } + }(errCh) + + select { + case <-ctx.Done(): + case err := <-errCh: + return err + } + + if pst != nil { + pst() + } + + srv.GracefulStop() + + if pstp != nil { + pstp() + } + + return nil + } +} diff --git a/component/x/grpc/server_test.go b/component/x/grpc/server_test.go new file mode 100644 index 0000000..d113b48 --- /dev/null +++ b/component/x/grpc/server_test.go @@ -0,0 +1,121 @@ +package grpc + +import ( + "context" + "errors" + "net" + "testing" + "time" + + "github.com/gojekfarm/xrun" + "github.com/stretchr/testify/mock" + "github.com/stretchr/testify/suite" + "golang.org/x/net/nettest" + "google.golang.org/grpc" +) + +type ServerTestSuite struct { + suite.Suite +} + +func TestServerSuite(t *testing.T) { + suite.Run(t, new(ServerTestSuite)) +} + +func (s *ServerTestSuite) TestServer() { + testcases := []struct { + name string + wantErr bool + wantBadListener bool + wantShutdownTimeout bool + }{ + { + name: "SuccessfulStart", + }, + { + name: "BadListener", + wantBadListener: true, + wantErr: true, + }, + { + name: "GracefulShutdownError", + wantShutdownTimeout: true, + wantErr: true, + }, + } + + for _, t := range testcases { + s.Run(t.name, func() { + var opts []xrun.Option + if t.wantShutdownTimeout { + opts = append(opts, xrun.WithGracefulShutdownTimeout(time.Nanosecond)) + } + m := xrun.NewManager(opts...) + srv := grpc.NewServer() + + var l net.Listener + if t.wantBadListener { + ml := &mockListener{} + ml.On("Accept").Return(nil, errors.New("unknown listen error")) + ml.On("Close").Return(nil) + l = ml + defer func() { + ml.AssertExpectations(s.T()) + }() + } else { + var err error + l, err = nettest.NewLocalListener("tcp") + s.NoError(err) + } + + s.NoError(m.Add(Server(Options{ + Server: srv, + Listener: l, + PreStart: func() { + s.T().Log("PreStart called") + }, + PreStop: func() { + s.T().Log("PreStop called") + }, + PostStop: func() { + s.T().Log("PostStop called") + }, + }))) + + errCh := make(chan error, 1) + ctx, cancel := context.WithCancel(context.Background()) + go func() { + errCh <- m.Run(ctx) + }() + + time.Sleep(50 * time.Millisecond) + + cancel() + if t.wantErr { + s.Error(<-errCh) + } else { + s.NoError(<-errCh) + } + }) + } +} + +type mockListener struct { + mock.Mock +} + +func (m *mockListener) Accept() (net.Conn, error) { + args := m.Called() + if err := args.Error(1); err != nil { + return nil, err + } + return args.Get(0).(net.Conn), nil +} + +func (m *mockListener) Close() error { + return m.Called().Error(0) +} + +func (m *mockListener) Addr() net.Addr { + return m.Called().Get(0).(net.Addr) +}