diff --git a/cmd/app/main.go b/cmd/app/main.go index f040261..13a4026 100644 --- a/cmd/app/main.go +++ b/cmd/app/main.go @@ -4,7 +4,7 @@ import ( "context" "flag" "fmt" - "github.com/tomwright/lifetime" + "github.com/tomwright/grace" "github.com/tomwright/mermaid-server/internal" "os" ) @@ -31,19 +31,16 @@ func main() { os.Exit(1) } + g := grace.Init(context.Background()) + cache := internal.NewDiagramCache() generator := internal.NewGenerator(cache, *mermaid, *in, *out, *puppeteer) - httpService := internal.NewHTTPService(generator) - cleanupService := internal.NewCleanupService(generator) + httpRunner := internal.NewHTTPRunner(generator) + cleanupRunner := internal.NewCleanupRunner(generator) - lt := lifetime.New(context.Background()).Init() + g.Run(httpRunner) + g.Run(cleanupRunner) - // Start the http service. - lt.Start(httpService) - // Start the cleanup service. - lt.Start(cleanupService) - - // Wait for all routines to stop running. - lt.Wait() + g.Wait() } diff --git a/go.mod b/go.mod index fd769e8..f928ee5 100644 --- a/go.mod +++ b/go.mod @@ -2,4 +2,7 @@ module github.com/tomwright/mermaid-server go 1.15 -require github.com/tomwright/lifetime v1.0.1 +require ( + github.com/tomwright/grace v0.1.2 + github.com/tomwright/gracehttpserverrunner v0.1.0 +) diff --git a/go.sum b/go.sum index e690fed..ad6fa49 100644 --- a/go.sum +++ b/go.sum @@ -1,90 +1,4 @@ -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 v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc= -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 v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98= -github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c= -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 v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw= -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 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v0.5.0 h1:/QaMHBdZ26BB3SSst0Iwl10Epc+xhTquomWX0oZEB6w= -github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= -github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA= -github.com/tomwright/lifetime v1.0.1 h1:1HnmKFjc9YCfR15vIsI5RJKYTxs4eFLrZ7PQiF/+edg= -github.com/tomwright/lifetime v1.0.1/go.mod h1:/bfCayfuWFlzhJoNKVIrO5MnNbwsySOSDbHeeuzhlxc= -golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= -golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto= -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/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= -golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= -golang.org/x/net v0.0.0-20200822124328-c89045814202 h1:VvcQYSHwXgi7W+TpUR6A9g6Up98WAHf3f/ulnJ62IyA= -golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA= -golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U= -golang.org/x/sync 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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/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo= -google.golang.org/genproto v0.0.0-20200815001618-f69a88009b70 h1:wboULUXGF3c5qdUnKp+6gLAccE6PRpa/czkYvQ4UXv8= -google.golang.org/genproto v0.0.0-20200815001618-f69a88009b70/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= -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 v1.31.0 h1:T7P4R73V3SSDPhH7WW7ATbfViLtmamH0DKrP3f9AuDI= -google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak= -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 v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4= -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= -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= +github.com/tomwright/grace v0.1.2 h1:8kH+S2GLqnwgWqUzi9CcjNoWJANZQnw9Xw65NPUr6WA= +github.com/tomwright/grace v0.1.2/go.mod h1:RKqz4gB3sQJpyas/CuiiriQQfUxSXhtWRfYtE7MG+Ok= +github.com/tomwright/gracehttpserverrunner v0.1.0 h1:n4iafOnJQEmRn05i1QzU+FPS0CU4ybxilyEdBEH/Ulk= +github.com/tomwright/gracehttpserverrunner v0.1.0/go.mod h1:FFHjVUgXu7KygMn+QlaoCesVlPOhaCnCvw35nvgzt5I= diff --git a/internal/cleanup.go b/internal/cleanup.go new file mode 100644 index 0000000..a34a243 --- /dev/null +++ b/internal/cleanup.go @@ -0,0 +1,46 @@ +package internal + +import ( + "context" + "github.com/tomwright/grace" + "log" + "time" +) + +// NewCleanupRunner returns a runner that can be used cleanup old diagrams. +func NewCleanupRunner(generator Generator) grace.Runner { + return &cleanupService{ + generator: generator, + runEvery: time.Minute * 5, + cleanupLast: time.Hour, + } +} + +// cleanupService is a runner that is used cleanup old diagrams. +type cleanupService struct { + generator Generator + runEvery time.Duration + cleanupLast time.Duration +} + +// Run starts the cleanup process. +func (s *cleanupService) Run(ctx context.Context) error { + for { + select { + case <-ctx.Done(): + return nil + default: + } + + if err := s.generator.CleanUp(s.cleanupLast); err != nil { + log.Printf("error when cleaning up: %s", err.Error()) + } + + select { + case <-time.After(s.runEvery): + continue + case <-ctx.Done(): + return nil + } + } +} diff --git a/internal/cleanup_service.go b/internal/cleanup_service.go deleted file mode 100644 index 2858857..0000000 --- a/internal/cleanup_service.go +++ /dev/null @@ -1,41 +0,0 @@ -package internal - -import ( - "log" - "time" -) - -// NewCleanupService returns a service that can be used cleanup old diagrams. -func NewCleanupService(generator Generator) *cleanupService { - return &cleanupService{ - generator: generator, - stopCh: make(chan struct{}), - } -} - -// cleanupService is a service that can be used cleanup old diagrams. -type cleanupService struct { - generator Generator - stopCh chan struct{} -} - -// Start starts the cleanup service. -func (s *cleanupService) Start() error { - for { - if err := s.generator.CleanUp(time.Hour); err != nil { - log.Printf("error when cleaning up: %s", err.Error()) - } - - select { - case <-time.After(time.Minute * 5): - continue - case <-s.stopCh: - return nil - } - } -} - -// Stop stops the cleanup service. -func (s *cleanupService) Stop() { - close(s.stopCh) -} diff --git a/internal/http.go b/internal/http.go index 5307559..46073c4 100644 --- a/internal/http.go +++ b/internal/http.go @@ -3,13 +3,32 @@ package internal import ( "encoding/json" "fmt" + "github.com/tomwright/grace" + "github.com/tomwright/gracehttpserverrunner" "io/ioutil" "log" "net/http" "net/url" "strings" + "time" ) +// NewHTTPRunner returns a grace runner that runs a HTTP server. +func NewHTTPRunner(generator Generator) grace.Runner { + httpHandler := generateHTTPHandler(generator) + + r := http.NewServeMux() + r.Handle("/generate", http.HandlerFunc(httpHandler)) + + return &gracehttpserverrunner.HTTPServerRunner{ + Server: &http.Server{ + Addr: ":80", + Handler: r, + }, + ShutdownTimeout: time.Second * 5, + } +} + func writeJSON(rw http.ResponseWriter, value interface{}, status int) { bytes, err := json.Marshal(value) if err != nil { diff --git a/internal/http_service.go b/internal/http_service.go deleted file mode 100644 index 934552a..0000000 --- a/internal/http_service.go +++ /dev/null @@ -1,47 +0,0 @@ -package internal - -import ( - "net/http" -) - -// NewHTTPService returns a service that can be used to start a http server -// that will generate diagrams. -func NewHTTPService(generator Generator) *httpService { - return &httpService{ - generator: generator, - } -} - -// httpService is a service that can be used to start a http server -// that will generate diagrams. -type httpService struct { - httpServer *http.Server - generator Generator -} - -// Start starts the HTTP server. -func (s *httpService) Start() error { - httpHandler := generateHTTPHandler(s.generator) - - r := http.NewServeMux() - r.Handle("/generate", http.HandlerFunc(httpHandler)) - - s.httpServer = &http.Server{ - Addr: ":80", - Handler: r, - } - - if err := s.httpServer.ListenAndServe(); err != nil && err != http.ErrServerClosed { - if err != http.ErrServerClosed { - return err - } - } - - return nil -} - -func (s *httpService) Stop() { - if s != nil { - _ = s.httpServer.Close() - } -}