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Add graph visualization with throughtput metrics
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,5 @@ | ||
| static: | ||
| cd mirror/server && statik -f -src ./public | ||
|
|
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| proto: | ||
| cd mirror && protoc -I=. --go_out=. *.proto |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| package graph | ||
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| import ( | ||
| "fmt" | ||
| "io" | ||
| "os/exec" | ||
| "strings" | ||
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| "github.com/emicklei/dot" | ||
| "github.com/shimmerglass/http-mirror-pipeline/mirror" | ||
| ) | ||
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| func FromModule(m mirror.Module) *dot.Graph { | ||
| g := dot.NewGraph(dot.Directed) | ||
| g.Attr("nodesep", "2") | ||
| processNode(g, nil, m) | ||
| return g | ||
| } | ||
|
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| func GraphSVG(g *dot.Graph, w io.Writer) error { | ||
| fmt.Println(g.String()) | ||
| cmd := exec.Command("dot", "-Tsvg") | ||
| cmd.Stdin = strings.NewReader(g.String()) | ||
| cmd.Stdout = w | ||
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| return cmd.Run() | ||
| } | ||
|
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| func processNode(g *dot.Graph, parents []dot.Node, m mirror.Module) []dot.Node { | ||
| ctx := m.Context() | ||
| current := g.Node(ctx.Name) | ||
| role := ctx.Role() | ||
|
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| if role != "virtual" { | ||
| current.Attr("label", dot.HTML( | ||
| fmt.Sprintf(` | ||
| %s<BR /> | ||
| <FONT point-size="11"><B>Throughput:</B> %d/s</FONT><BR /> | ||
| <FONT point-size="10">%s</FONT> | ||
| `, ctx.Name, ctx.RPS, ctx.Type), | ||
| )) | ||
| } | ||
|
|
||
| current.Attr("width", "3") | ||
|
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| switch ctx.Role() { | ||
| case "virtual": | ||
| current.Attr("shape", "underline") | ||
| case "source": | ||
| current.Attr("shape", "invhouse") | ||
| current.Attr("color", "#2D232F") | ||
| current.Attr("fillcolor", "#634B66") | ||
| current.Attr("fontcolor", "#FFFFFF") | ||
| current.Attr("style", "filled") | ||
| case "sink": | ||
| current.Attr("shape", "invhouse") | ||
| current.Attr("color", "#144667") | ||
| current.Attr("fillcolor", "#2176AE") | ||
| current.Attr("fontcolor", "#FFFFFF") | ||
| current.Attr("style", "filled") | ||
| default: | ||
| current.Attr("shape", "hexagon") | ||
| current.Attr("color", "#94A0B3") | ||
| current.Attr("fillcolor", "#D2D7DF") | ||
| current.Attr("fontcolor", "#000000") | ||
| current.Attr("style", "filled") | ||
| } | ||
|
|
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| for _, p := range parents { | ||
| g.Edge(p, current) | ||
| } | ||
|
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| children := m.Children() | ||
| leafs := []dot.Node{} | ||
|
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| for _, group := range children { | ||
| parents := []dot.Node{current} | ||
| for i, child := range group { | ||
| parents = processNode(g, parents, child) | ||
|
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| if i == len(group)-1 { | ||
| leafs = append(leafs, parents...) | ||
| } | ||
| } | ||
| } | ||
|
|
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| if len(leafs) == 0 { | ||
| leafs = append(leafs, current) | ||
| } | ||
|
|
||
| return leafs | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,10 +1,46 @@ | ||
| package mirror | ||
|
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| import ( | ||
| "strings" | ||
| "sync/atomic" | ||
| "time" | ||
|
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| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/prometheus/client_golang/prometheus/promauto" | ||
| ) | ||
|
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| var ( | ||
| RequestsTotal = promauto.NewCounterVec(prometheus.CounterOpts{ | ||
| Name: "requets_total", | ||
| Help: "The total number of requets handled by the module", | ||
| }, []string{"module"}) | ||
| ) | ||
|
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| type ModuleContext struct { | ||
| Name string | ||
| Type string | ||
| Name string | ||
| RPS int | ||
| requestCounter uint64 | ||
| } | ||
|
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| func (c *ModuleContext) Role() string { | ||
| return strings.Split(c.Type, ".")[0] | ||
| } | ||
|
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| func (c *ModuleContext) HandledRequest() { | ||
| atomic.AddUint64(&c.requestCounter, 1) | ||
| RequestsTotal.WithLabelValues(c.Name).Inc() | ||
| } | ||
|
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| func (c *ModuleContext) Run() { | ||
| for range time.Tick(time.Second) { | ||
| c.RPS = int(atomic.SwapUint64(&c.requestCounter, 0)) | ||
| } | ||
| } | ||
|
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| type Module interface { | ||
| Context() *ModuleContext | ||
| SetInput(<-chan Request) | ||
| Output() <-chan Request | ||
| Children() [][]Module | ||
| } |
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