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8 results

main.go

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    • ale's avatar
      0def9013
      Switch to a self-hosted binary, add graph-related code · 0def9013
      ale authored 
      The app is now self-hosted instead of relying on the static-content
standalone server, so we can eventually add dynamic code for graph
serving.

The static content serving has improved, with more consistent cache
header management, as well as the capability of serving pre-compressed
content.

Additional code to implement the generation of dependency (flow)
graphs in dot format was added (not hooked to the HTTP server yet).
      0def9013
      History
      Switch to a self-hosted binary, add graph-related code
      ale authored 
      The app is now self-hosted instead of relying on the static-content
standalone server, so we can eventually add dynamic code for graph
serving.

The static content serving has improved, with more consistent cache
header management, as well as the capability of serving pre-compressed
content.

Additional code to implement the generation of dependency (flow)
graphs in dot format was added (not hooked to the HTTP server yet).
    main.go 1.00 KiB 
    package main

import (
	"flag"
	"io/ioutil"
	"log"
	"os"
	"os/exec"
	"strings"

	floatschema "git.autistici.org/ai3/tools/float-dashboard/schema/float"
	"git.autistici.org/ai3/tools/float-dashboard/schema/graph"
	"gopkg.in/yaml.v3"
)

var service = flag.String("service", "", "filter this service only")

func main() {
	log.SetFlags(0)
	flag.Parse()

	data, err := ioutil.ReadFile(flag.Arg(0))
	if err != nil {
		log.Fatal(err)
	}

	var svcmap map[string]*floatschema.Service
	if err := yaml.Unmarshal(data, &svcmap); err != nil {
		log.Fatal(err)
	}

	var dot string

	g := graph.ServiceGraph(svcmap)
	if *service != "" {
		g = g.Filter(graph.FilterEdgeByService(*service))
		dot = g.Render(
			graph.StyleNodeByService(*service),
			graph.StyleEdgeByService(*service),
		)
	} else {
		dot = g.Render(nil, nil)
	}

	// Run graphviz to render to SVG.
	cmd := exec.Command("dot", "-Tsvg")
	cmd.Stdin = strings.NewReader(dot)
	cmd.Stderr = os.Stderr
	cmd.Stdout = os.Stdout
	if err := cmd.Run(); err != nil {
		log.Fatal(err)
	}
}