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[wip]: Visualize graphs on command line
Signed-off-by: Ketan Umare <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| package visualize | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "fmt" | ||
| "github.com/flyteorg/flyteidl/gen/pb-go/flyteidl/core" | ||
| "github.com/flyteorg/flytestdlib/errors" | ||
| "github.com/flyteorg/flytestdlib/logger" | ||
| "github.com/goccy/go-graphviz" | ||
| "github.com/goccy/go-graphviz/cgraph" | ||
| ) | ||
|
|
||
| func constructGraph(prefix string, graph *cgraph.Graph, w *core.CompiledWorkflow, subWf map[string]*cgraph.Graph) error { | ||
| grapNodes := make(map[string]*cgraph.Node) | ||
| for _, n := range w.Template.Nodes { | ||
| name := n.Id | ||
| if prefix != "" { | ||
| name = prefix + "-" + n.Id | ||
| } | ||
|
|
||
| if n.Id == "start-node" || n.Id == "end-node"{ | ||
| gn, err := graph.CreateNode(name) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| grapNodes[name] = gn | ||
| } else { | ||
| switch n.Target.(type) { | ||
| case *core.Node_TaskNode: | ||
| gn, err := graph.CreateNode(name) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| grapNodes[name] = gn | ||
| case *core.Node_BranchNode: | ||
| gn, err := graph.CreateNode(name) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| grapNodes[name] = gn | ||
| case *core.Node_WorkflowNode: | ||
| gn, err := graph.CreateNode(name) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| grapNodes[name] = gn | ||
| } | ||
| } | ||
| } | ||
|
|
||
| for name, node := range grapNodes { | ||
| upstreamNodes, _ := w.Connections.Upstream[name] | ||
| downstreamNodes, _ := w.Connections.Downstream[name] | ||
| if downstreamNodes != nil { | ||
| for _, n := range downstreamNodes.Ids { | ||
| dNode, ok := grapNodes[n] | ||
| if !ok { | ||
| return fmt.Errorf("node[%s], downstream from[%s] referenced before creation", n, name) | ||
| } | ||
| _, err := graph.CreateEdge(fmt.Sprintf("%s-%s", name, n), node, dNode) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } | ||
| } | ||
| if upstreamNodes != nil { | ||
| for _, n := range upstreamNodes.Ids { | ||
| uNode, ok := grapNodes[n] | ||
| if !ok { | ||
| return fmt.Errorf("node[%s], upstream from[%s] referenced before creation", n, name) | ||
| } | ||
| _, err := graph.CreateEdge(fmt.Sprintf("%s-%s", n, name), node, uNode) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func CompiledWorkflowClosureToGraph(g *graphviz.Graphviz, w *core.CompiledWorkflowClosure) (*cgraph.Graph, error) { | ||
| graph, err := g.Graph(graphviz.Directed) | ||
| if err != nil { | ||
| return nil, errors.Wrapf("GraphInitFailure", err, "failed to initialize graphviz") | ||
| } | ||
|
|
||
| defer func() { | ||
| if err := graph.Close(); err != nil { | ||
| logger.Fatalf(context.TODO(), "Failed to close the graphviz Graph. err: %s", err) | ||
| } | ||
| }() | ||
|
|
||
| return graph, constructGraph("", graph, w.Primary, nil) | ||
| } | ||
|
|
||
| // RenderWorkflow Renders the workflow graph to the given file | ||
| func RenderWorkflow(w *core.CompiledWorkflowClosure, file string) error { | ||
| g := graphviz.New() | ||
| defer func() { | ||
| if err := g.Close(); err != nil { | ||
| logger.Fatalf(context.TODO(), "failed to close graphviz. err: %s", err) | ||
| } | ||
| }() | ||
| graph, err := CompiledWorkflowClosureToGraph(g, w) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| logger.Infof(context.TODO(), "outputing file: %s", file) | ||
| var buf bytes.Buffer | ||
| if err := g.Render(graph, graphviz.XDOT, &buf); err != nil { | ||
| return err | ||
| } | ||
| logger.Infof(context.TODO(), buf.String()) | ||
| if err := g.RenderFilename(graph, graphviz.SVG, file); err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } |