move sysdig server init to container controller

todo
    add layer info to container controller

Author: YLonely

go.mod

@@ -3,7 +3,24 @@ module github.com/YLonely/sysdig-monitor
 go 1.12
 
 require (
+	github.com/Microsoft/go-winio v0.4.14 // indirect
+	github.com/docker/distribution v2.7.1+incompatible // indirect
+	github.com/docker/docker v1.13.1
+	github.com/docker/go-connections v0.4.0 // indirect
+	github.com/docker/go-units v0.4.0 // indirect
 	github.com/gin-gonic/gin v1.4.0
+	github.com/gogo/protobuf v1.3.1 // indirect
+	github.com/gorilla/mux v1.7.3 // indirect
+	github.com/morikuni/aec v1.0.0 // indirect
+	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
+	github.com/opencontainers/image-spec v1.0.1 // indirect
 	github.com/sirupsen/logrus v1.4.2
 	github.com/urfave/cli v1.22.1
+	golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3 // indirect
+	golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135 // indirect
+	google.golang.org/grpc v1.25.0 // indirect
+	gotest.tools v2.2.0+incompatible // indirect
+	honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc // indirect
 )
+
+replace github.com/docker/docker v1.13.1 => github.com/docker/engine v0.0.0-20190822205725-ed20165a37b4

go.sum

@@ -1,18 +1,46 @@
+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/Microsoft/go-winio v0.4.14 h1:+hMXMk01us9KgxGb7ftKQt2Xpf5hH/yky+TDA+qxleU=
+github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
+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/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d h1:U+s90UTSYgptZMwQh2aRr3LuazLJIa+Pg3Kc1ylSYVY=
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
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+github.com/docker/distribution v2.7.1+incompatible h1:a5mlkVzth6W5A4fOsS3D2EO5BUmsJpcB+cRlLU7cSug=
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+github.com/docker/engine v0.0.0-20190822205725-ed20165a37b4 h1:hB02X3RT4IZUr/dm+zIXpAlpvQPtRyKBEA/CbzshNZ8=
+github.com/docker/engine v0.0.0-20190822205725-ed20165a37b4/go.mod h1:3CPr2caMgTHxxIAZgEMd3uLYPDlRvPqCpyeRf6ncPcY=
+github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKohAFqRJQ=
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+github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
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 github.com/gin-contrib/sse v0.0.0-20190301062529-5545eab6dad3/go.mod h1:VJ0WA2NBN22VlZ2dKZQPAPnyWw5XTlK1KymzLKsr59s=
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+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 v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
+github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
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+github.com/gorilla/mux v1.7.3/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
 github.com/json-iterator/go v1.1.6 h1:MrUvLMLTMxbqFJ9kzlvat/rYZqZnW3u4wkLzWTaFwKs=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
+github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00=
+github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/mattn/go-isatty v0.0.7 h1:UvyT9uN+3r7yLEYSlJsbQGdsaB/a0DlgWP3pql6iwOc=
@@ -21,12 +49,22 @@ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v1.0.1 h1:9f412s+6RmYXLWZSEzVVgPGK7C2PphHj5RJrvfx9AWI=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
+github.com/morikuni/aec v1.0.0 h1:nP9CBfwrvYnBRgY6qfDQkygYDmYwOilePFkwzv4dU8A=
+github.com/morikuni/aec v1.0.0/go.mod h1:BbKIizmSmc5MMPqRYbxO4ZU0S0+P200+tUnFx7PXmsc=
+github.com/opencontainers/go-digest v1.0.0-rc1 h1:WzifXhOVOEOuFYOJAW6aQqW0TooG2iki3E3Ii+WN7gQ=
+github.com/opencontainers/go-digest v1.0.0-rc1/go.mod h1:cMLVZDEM3+U2I4VmLI6N8jQYUd2OVphdqWwCJHrFt2s=
+github.com/opencontainers/image-spec v1.0.1 h1:JMemWkRwHx4Zj+fVxWoMCFm/8sYGGrUVojFA6h/TRcI=
+github.com/opencontainers/image-spec v1.0.1/go.mod h1:BtxoFyWECRxE4U/7sNtV5W15zMzWCbyJoFRP3s7yZA0=
+github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
+github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
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+github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0RK8m9o+Q=
 github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/shurcooL/sanitized_anchor_name v1.0.0 h1:PdmoCO6wvbs+7yrJyMORt4/BmY5IYyJwS/kOiWx8mHo=
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+github.com/sirupsen/logrus v1.4.1/go.mod h1:ni0Sbl8bgC9z8RoU9G6nDWqqs/fq4eDPysMBDgk/93Q=
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@@ -39,14 +77,44 @@ github.com/ugorji/go v1.1.4/go.mod h1:uQMGLiO92mf5W77hV/PUCpI3pbzQx3CRekS0kk+RGr
 github.com/urfave/cli v1.22.1 h1:+mkCCcOFKPnCmVYVcURKps1Xe+3zP90gSYGNfRkjoIY=
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 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
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@@ -55,3 +123,7 @@ gopkg.in/go-playground/validator.v8 v8.18.2 h1:lFB4DoMU6B626w8ny76MV7VX6W2VHct2G
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+gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
+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=

server/context/context.go

@@ -0,0 +1,15 @@
+package context
+
+import (
+	gocontext "context"
+)
+
+type ErrorChannelKey struct{}
+
+func GetErrorChannel(ctx gocontext.Context) chan<- error {
+	errC := ctx.Value(ErrorChannelKey{})
+	if errC == nil {
+		panic("nil error channel")
+	}
+	return errC.(chan<- error)
+}

server/controller/container/container.go

@@ -9,6 +9,9 @@ import (
 	"github.com/YLonely/sysdig-monitor/server/model"
 	"github.com/YLonely/sysdig-monitor/server/router"
 	"github.com/YLonely/sysdig-monitor/sysdig"
+	"github.com/docker/docker/client"
+    "github.com/docker/docker/api/types"
+
 )
 
 // Container represents a top level controller for container
@@ -18,35 +21,55 @@ type ContainerController struct {
 	ec chan sysdig.Event
 
 	// containers use container id as key
-	containers map[string]*mutexContainer
+	containers map[string]*container
 	// container process channels
 	containerCh map[string]chan containerEvent
 
 	//containers mutex
 	cm sync.RWMutex
+
+	//docker client
+	dockerCli *client.Client
 }
 
-type mutexContainer struct {
+type container struct {
+	imageConfig types.ImageInspect
 	m sync.RWMutex
 	*model.Container
 }
 
-func newMutexContainer(id, name string) *mutexContainer {
+func newContainer(id, name string) *container {
 	c := model.NewContainer(id, name)
-	return &mutexContainer{Container: c}
+	return &container{Container: c}
 }
 
 const eventBufferLen = 512
 const unknownContainerName = "<unknown>"
 const incompleteContainerName = "incomplete"
 
-func NewController(ctx context.Context, ec chan sysdig.Event) (controller.Controller, error) {
+func NewController(ctx context.Context, serverErrorChannel chan<- error) (controller.Controller, error) {
 	r := router.NewGroupRouter("/container")
-	res := &ContainerController{containerRouter: r, ec: ec, containers: map[string]*mutexContainer{}, containerCh: map[string]chan containerEvent{}}
-	res.initRouter()
+	sysdigServer := sysdig.NewServer()
+	res := &ContainerController{containerRouter: r, ec: sysdigServer.Subscribe(), containers: map[string]*container{}, containerCh: map[string]chan containerEvent{}}
+
+	cli, err := client.NewClientWithOpts(client.FromEnv)
+	if err != nil {
+		return nil, err
+	}
+	res.dockerCli = cli
+
 	if err := res.start(ctx); err != nil {
-		return res, err
+		return nil, err
+	}
+	sysdigServC, err := sysdigServer.Start(ctx)
+	if err != nil {
+		return nil, err
 	}
+	go func() {
+		e := <-sysdigServC
+		serverErrorChannel <- e
+	}()
+	res.initRouter()
 	return res, nil
 }
 
@@ -57,7 +80,6 @@ func (cc *ContainerController) BindedRoutes() []router.Route {
 }
 
 func (cc *ContainerController) initRouter() {
-	// TODO
 	cc.containerRouter.AddRoute("/", router.MethodGet, cc.getAllContainers)
 	cc.containerRouter.AddRoute("/:id", router.MethodGet, cc.getContainer)
 }
@@ -82,7 +104,7 @@ func (cc *ContainerController) start(ctx context.Context) error {
 			}
 			log.L.Debug(ce)
 			if _, exists := cc.containers[containerID]; !exists {
-				container := newMutexContainer(ce.containerID, containerName)
+				container := newcontainer(ce.containerID, containerName)
 				ch := make(chan containerEvent, eventBufferLen)
 				cc.cm.Lock()
 				cc.containers[containerID] = container

server/controller/container/util.go

@@ -31,7 +31,7 @@ type containerEvent struct {
 	virtualtid          int
 }
 
-func processLoop(ctx context.Context, c *mutexContainer, ch chan containerEvent) error {
+func processLoop(ctx context.Context, c *container, ch chan containerEvent) error {
 	var e containerEvent
 	var err error
 	for {

server/model/container.go

@@ -2,6 +2,8 @@ package model
 
 import "time"
 
+type Digest string
+
 type Container struct {
 	ID   string `json:"id"`
 	Name string `json:"name"`
@@ -15,20 +17,24 @@ type Container struct {
 
 func NewContainer(id, name string) *Container {
 	system := SystemCalls{IndividualCalls: map[string]*SystemCall{}}
-	fileSys := FileSystem{AccessedFiles: map[string]*File{}}
+	fileSys := FileSystem{AccessedLayers: map[Digest]*LayerInfo{}}
 	net := Network{ActiveConnections: map[ConnectionMeta]*Connection{}}
 	return &Container{ID: id, Name: name, SystemCalls: system, FileSystem: fileSys, Network: net}
 }
 
+func NewLayerInfo() *LayerInfo {
+	return &LayerInfo{AccessedFiles: map[string]*File{}}
+}
+
 type SystemCalls struct {
 	// map system call name to SystemCall
 	IndividualCalls map[string]*SystemCall `json:"individual_calls"`
 	TotalCalls      int64                  `json:"total_calls"`
 }
 
 type FileSystem struct {
-	// map file name to file
-	AccessedFiles map[string]*File `json:"accessed_files"`
+	// map layer digest to layer info
+	AccessedLayers map[Digest]*LayerInfo `json:"accessed_layers"`
 	// io calls whose latency is bigger than 1ms
 	IOCalls1 []*IOCall `json:"io_calls_more_than_1ms"`
 	// io calls whose latency is bigger than 10ms
@@ -52,6 +58,12 @@ type SystemCall struct {
 	TotalTime time.Duration `json:"total_time"`
 }
 
+type LayerInfo struct {
+	AccessedFiles map[string]*File `json:"accessed_files"`
+	WriteOut      int64            `json:"write_out"`
+	ReadIn        int64            `json:"read_in"`
+}
+
 type File struct {
 	Name     string `json:"-"`
 	WriteOut int64  `json:"write_out"`

server/server.go

@@ -10,7 +10,6 @@ import (
 	"github.com/gin-gonic/gin"
 
 	"github.com/YLonely/sysdig-monitor/server/controller/container"
-	"github.com/YLonely/sysdig-monitor/sysdig"
 )
 
 // Config containes params to start a server, only port now
@@ -35,13 +34,7 @@ func NewServer(conf Config) Server {
 
 func (s *server) Start(ctx context.Context) chan error {
 	errch := make(chan error, 1)
-	sysdigServer := sysdig.NewServer()
-	containerContorller, err := container.NewController(ctx, sysdigServer.Subscribe())
-	if err != nil {
-		errch <- err
-		return errch
-	}
-	err, sysdigErrorCh := sysdigServer.Start(ctx)
+	containerContorller, err := container.NewController(ctx, errch)
 	if err != nil {
 		errch <- err
 		return errch
@@ -50,19 +43,9 @@ func (s *server) Start(ctx context.Context) chan error {
 	ginServer := gin.Default()
 	initRoutes(ginServer, containerContorller) // may be more controller?
 	s.httpServer = &http.Server{Addr: s.conf.Port, Handler: ginServer}
-	httpServerErrorCh := make(chan error, 1)
 	go func() {
 		if err := s.httpServer.ListenAndServe(); err != nil && err != http.ErrServerClosed {
-			httpServerErrorCh <- err
-		}
-	}()
-	go func() {
-		var e error
-		select {
-		case e = <-sysdigErrorCh:
-			errch <- e
-		case e = <-httpServerErrorCh:
-			errch <- e
+			errch <- err
 		}
 	}()
 	return errch