// GET /api/graph.:ext
func apiGraph(c *gin.Context) {
var (
err error
output []byte
)
ext := c.Params.ByName("ext")
factory := context.CollectionFactory()
factory.RemoteRepoCollection().RLock()
defer factory.RemoteRepoCollection().RUnlock()
factory.LocalRepoCollection().RLock()
defer factory.LocalRepoCollection().RUnlock()
factory.SnapshotCollection().RLock()
defer factory.SnapshotCollection().RUnlock()
factory.PublishedRepoCollection().RLock()
defer factory.PublishedRepoCollection().RUnlock()
graph, err := deb.BuildGraph(factory)
if err != nil {
c.JSON(500, err)
return
}
buf := bytes.NewBufferString(graph.String())
command := exec.Command("dot", "-T"+ext)
command.Stderr = os.Stderr
stdin, err := command.StdinPipe()
if err != nil {
c.Fail(500, err)
return
}
_, err = io.Copy(stdin, buf)
if err != nil {
c.Fail(500, err)
return
}
err = stdin.Close()
if err != nil {
c.Fail(500, err)
return
}
output, err = command.Output()
if err != nil {
c.Fail(500, fmt.Errorf("unable to execute dot: %s (is graphviz package installed?)", err))
return
}
mimeType := mime.TypeByExtension("." + ext)
if mimeType == "" {
mimeType = "application/octet-stream"
}
c.Data(200, mimeType, output)
}
func aptlyGraph(cmd *commander.Command, args []string) error {
var err error
if len(args) != 0 {
cmd.Usage()
return commander.ErrCommandError
}
fmt.Printf("Generating graph...\n")
graph, err := deb.BuildGraph(context.CollectionFactory())
if err != nil {
return err
}
buf := bytes.NewBufferString(graph.String())
tempfile, err := ioutil.TempFile("", "aptly-graph")
if err != nil {
return err
}
tempfile.Close()
os.Remove(tempfile.Name())
format := context.Flags().Lookup("format").Value.String()
output := context.Flags().Lookup("output").Value.String()
if filepath.Ext(output) != "" {
format = filepath.Ext(output)[1:]
}
tempfilename := tempfile.Name() + "." + format
command := exec.Command("dot", "-T"+format, "-o"+tempfilename)
command.Stderr = os.Stderr
stdin, err := command.StdinPipe()
if err != nil {
return err
}
err = command.Start()
if err != nil {
return fmt.Errorf("unable to execute dot: %s (is graphviz package installed?)", err)
}
_, err = io.Copy(stdin, buf)
if err != nil {
return err
}
err = stdin.Close()
if err != nil {
return err
}
err = command.Wait()
if err != nil {
return err
}
if output != "" {
err = utils.CopyFile(tempfilename, output)
if err != nil {
return fmt.Errorf("unable to copy %s -> %s: %s", tempfilename, output, err)
}
_ = os.Remove(tempfilename)
fmt.Printf("Output saved to %s\n", output)
} else {
fmt.Printf("Rendered to %s file: %s, trying to open it...\n", format, tempfilename)
_ = exec.Command("open", tempfilename).Run()
}
return err
}