package main import ( "encoding/json" "fmt" "go/ast" "go/parser" "go/token" "reflect" "sort" "strings" "time" "unicode" "github.com/ipfs/go-cid" "github.com/ipfs/go-filestore" metrics "github.com/libp2p/go-libp2p-core/metrics" "github.com/libp2p/go-libp2p-core/network" "github.com/libp2p/go-libp2p-core/peer" protocol "github.com/libp2p/go-libp2p-core/protocol" pubsub "github.com/libp2p/go-libp2p-pubsub" "github.com/multiformats/go-multiaddr" "github.com/filecoin-project/go-address" "github.com/filecoin-project/go-bitfield" datatransfer "github.com/filecoin-project/go-data-transfer" "github.com/filecoin-project/go-fil-markets/retrievalmarket" "github.com/filecoin-project/go-jsonrpc/auth" "github.com/filecoin-project/go-multistore" "github.com/filecoin-project/specs-actors/actors/abi" "github.com/filecoin-project/specs-actors/actors/crypto" "github.com/filecoin-project/specs-actors/actors/runtime/exitcode" "github.com/filecoin-project/lotus/api" "github.com/filecoin-project/lotus/api/apistruct" "github.com/filecoin-project/lotus/build" "github.com/filecoin-project/lotus/chain/types" "github.com/filecoin-project/lotus/node/modules/dtypes" ) var ExampleValues = map[reflect.Type]interface{}{ reflect.TypeOf(auth.Permission("")): auth.Permission("write"), reflect.TypeOf(""): "string value", reflect.TypeOf(uint64(42)): uint64(42), reflect.TypeOf(byte(7)): byte(7), reflect.TypeOf([]byte{}): []byte("byte array"), } func addExample(v interface{}) { ExampleValues[reflect.TypeOf(v)] = v } func init() { c, err := cid.Decode("bafy2bzacea3wsdh6y3a36tb3skempjoxqpuyompjbmfeyf34fi3uy6uue42v4") if err != nil { panic(err) } ExampleValues[reflect.TypeOf(c)] = c c2, err := cid.Decode("bafy2bzacebp3shtrn43k7g3unredz7fxn4gj533d3o43tqn2p2ipxxhrvchve") if err != nil { panic(err) } tsk := types.NewTipSetKey(c, c2) ExampleValues[reflect.TypeOf(tsk)] = tsk addr, err := address.NewIDAddress(1234) if err != nil { panic(err) } ExampleValues[reflect.TypeOf(addr)] = addr pid, err := peer.Decode("12D3KooWGzxzKZYveHXtpG6AsrUJBcWxHBFS2HsEoGTxrMLvKXtf") if err != nil { panic(err) } addExample(pid) addExample(&pid) addExample(bitfield.NewFromSet([]uint64{5})) addExample(abi.RegisteredSealProof_StackedDrg32GiBV1) addExample(abi.RegisteredPoStProof_StackedDrgWindow32GiBV1) addExample(abi.ChainEpoch(10101)) addExample(crypto.SigTypeBLS) addExample(int64(9)) addExample(12.3) addExample(123) addExample(uintptr(0)) addExample(abi.MethodNum(1)) addExample(exitcode.ExitCode(0)) addExample(crypto.DomainSeparationTag_ElectionProofProduction) addExample(true) addExample(abi.UnpaddedPieceSize(1024)) addExample(abi.UnpaddedPieceSize(1024).Padded()) addExample(abi.DealID(5432)) addExample(filestore.StatusFileChanged) addExample(abi.SectorNumber(9)) addExample(abi.SectorSize(32 * 1024 * 1024 * 1024)) addExample(api.MpoolChange(0)) addExample(network.Connected) addExample(dtypes.NetworkName("lotus")) addExample(api.SyncStateStage(1)) addExample(build.APIVersion) addExample(api.PCHInbound) addExample(time.Minute) addExample(datatransfer.TransferID(3)) addExample(datatransfer.Ongoing) addExample(multistore.StoreID(50)) addExample(retrievalmarket.ClientEventDealAccepted) addExample(retrievalmarket.DealStatusNew) addExample(network.ReachabilityPublic) addExample(&types.ExecutionTrace{ Msg: exampleValue(reflect.TypeOf(&types.Message{}), nil).(*types.Message), MsgRct: exampleValue(reflect.TypeOf(&types.MessageReceipt{}), nil).(*types.MessageReceipt), }) addExample(map[string]types.Actor{ "t01236": exampleValue(reflect.TypeOf(types.Actor{}), nil).(types.Actor), }) addExample(map[string]api.MarketDeal{ "t026363": exampleValue(reflect.TypeOf(api.MarketDeal{}), nil).(api.MarketDeal), }) addExample(map[string]api.MarketBalance{ "t026363": exampleValue(reflect.TypeOf(api.MarketBalance{}), nil).(api.MarketBalance), }) addExample(map[string]*pubsub.TopicScoreSnapshot{ "/blocks": { TimeInMesh: time.Minute, FirstMessageDeliveries: 122, MeshMessageDeliveries: 1234, InvalidMessageDeliveries: 3, }, }) addExample(map[string]metrics.Stats{ "12D3KooWSXmXLJmBR1M7i9RW9GQPNUhZSzXKzxDHWtAgNuJAbyEJ": { RateIn: 100, RateOut: 50, TotalIn: 174000, TotalOut: 12500, }, }) addExample(map[protocol.ID]metrics.Stats{ "/fil/hello/1.0.0": { RateIn: 100, RateOut: 50, TotalIn: 174000, TotalOut: 12500, }, }) maddr, err := multiaddr.NewMultiaddr("/ip4/52.36.61.156/tcp/1347/p2p/12D3KooWFETiESTf1v4PGUvtnxMAcEFMzLZbJGg4tjWfGEimYior") if err != nil { panic(err) } // because reflect.TypeOf(maddr) returns the concrete type... ExampleValues[reflect.TypeOf(struct{ A multiaddr.Multiaddr }{}).Field(0).Type] = maddr } func exampleValue(t, parent reflect.Type) interface{} { v, ok := ExampleValues[t] if ok { return v } switch t.Kind() { case reflect.Slice: out := reflect.New(t).Elem() reflect.Append(out, reflect.ValueOf(exampleValue(t.Elem(), t))) return out.Interface() case reflect.Chan: return exampleValue(t.Elem(), nil) case reflect.Struct: es := exampleStruct(t, parent) v := reflect.ValueOf(es).Elem().Interface() ExampleValues[t] = v return v case reflect.Array: out := reflect.New(t).Elem() for i := 0; i < t.Len(); i++ { out.Index(i).Set(reflect.ValueOf(exampleValue(t.Elem(), t))) } return out.Interface() case reflect.Ptr: if t.Elem().Kind() == reflect.Struct { es := exampleStruct(t.Elem(), t) //ExampleValues[t] = es return es } case reflect.Interface: return struct{}{} } panic(fmt.Sprintf("No example value for type: %s", t)) } func exampleStruct(t, parent reflect.Type) interface{} { ns := reflect.New(t) for i := 0; i < t.NumField(); i++ { f := t.Field(i) if f.Type == parent { continue } if strings.Title(f.Name) == f.Name { ns.Elem().Field(i).Set(reflect.ValueOf(exampleValue(f.Type, t))) } } return ns.Interface() } type Visitor struct { Methods map[string]ast.Node } func (v *Visitor) Visit(node ast.Node) ast.Visitor { st, ok := node.(*ast.TypeSpec) if !ok { return v } if st.Name.Name != "FullNode" { return nil } iface := st.Type.(*ast.InterfaceType) for _, m := range iface.Methods.List { if len(m.Names) > 0 { v.Methods[m.Names[0].Name] = m } } return v } const noComment = "There are not yet any comments for this method." func parseApiASTInfo() (map[string]string, map[string]string) { //nolint:golint fset := token.NewFileSet() pkgs, err := parser.ParseDir(fset, "./api", nil, parser.AllErrors|parser.ParseComments) if err != nil { fmt.Println("parse error: ", err) } ap := pkgs["api"] f := ap.Files["api/api_full.go"] cmap := ast.NewCommentMap(fset, f, f.Comments) v := &Visitor{make(map[string]ast.Node)} ast.Walk(v, pkgs["api"]) groupDocs := make(map[string]string) out := make(map[string]string) for mn, node := range v.Methods { cs := cmap.Filter(node).Comments() if len(cs) == 0 { out[mn] = noComment } else { for _, c := range cs { if strings.HasPrefix(c.Text(), "MethodGroup:") { parts := strings.Split(c.Text(), "\n") groupName := strings.TrimSpace(parts[0][12:]) comment := strings.Join(parts[1:], "\n") groupDocs[groupName] = comment break } } last := cs[len(cs)-1].Text() if !strings.HasPrefix(last, "MethodGroup:") { out[mn] = last } else { out[mn] = noComment } } } return out, groupDocs } type MethodGroup struct { GroupName string Header string Methods []*Method } type Method struct { Comment string Name string InputExample string ResponseExample string } func methodGroupFromName(mn string) string { i := strings.IndexFunc(mn[1:], func(r rune) bool { return unicode.IsUpper(r) }) if i < 0 { return "" } return mn[:i+1] } func main() { comments, groupComments := parseApiASTInfo() groups := make(map[string]*MethodGroup) var api struct{ api.FullNode } t := reflect.TypeOf(api) for i := 0; i < t.NumMethod(); i++ { m := t.Method(i) groupName := methodGroupFromName(m.Name) g, ok := groups[groupName] if !ok { g = new(MethodGroup) g.Header = groupComments[groupName] g.GroupName = groupName groups[groupName] = g } var args []interface{} ft := m.Func.Type() for j := 2; j < ft.NumIn(); j++ { inp := ft.In(j) args = append(args, exampleValue(inp, nil)) } v, err := json.MarshalIndent(args, "", " ") if err != nil { panic(err) } outv := exampleValue(ft.Out(0), nil) ov, err := json.MarshalIndent(outv, "", " ") if err != nil { panic(err) } g.Methods = append(g.Methods, &Method{ Name: m.Name, Comment: comments[m.Name], InputExample: string(v), ResponseExample: string(ov), }) } var groupslice []*MethodGroup for _, g := range groups { groupslice = append(groupslice, g) } sort.Slice(groupslice, func(i, j int) bool { return groupslice[i].GroupName < groupslice[j].GroupName }) fmt.Printf("# Groups\n") for _, g := range groupslice { fmt.Printf("* [%s](#%s)\n", g.GroupName, g.GroupName) for _, method := range g.Methods { fmt.Printf(" * [%s](#%s)\n", method.Name, method.Name) } } permStruct := reflect.TypeOf(apistruct.FullNodeStruct{}.Internal) commonPermStruct := reflect.TypeOf(apistruct.CommonStruct{}.Internal) for _, g := range groupslice { g := g fmt.Printf("## %s\n", g.GroupName) fmt.Printf("%s\n\n", g.Header) sort.Slice(g.Methods, func(i, j int) bool { return g.Methods[i].Name < g.Methods[j].Name }) for _, m := range g.Methods { fmt.Printf("### %s\n", m.Name) fmt.Printf("%s\n\n", m.Comment) meth, ok := permStruct.FieldByName(m.Name) if !ok { meth, ok = commonPermStruct.FieldByName(m.Name) if !ok { panic("no perms for method: " + m.Name) } } perms := meth.Tag.Get("perm") fmt.Printf("Perms: %s\n\n", perms) if strings.Count(m.InputExample, "\n") > 0 { fmt.Printf("Inputs:\n```json\n%s\n```\n\n", m.InputExample) } else { fmt.Printf("Inputs: `%s`\n\n", m.InputExample) } if strings.Count(m.ResponseExample, "\n") > 0 { fmt.Printf("Response:\n```json\n%s\n```\n\n", m.ResponseExample) } else { fmt.Printf("Response: `%s`\n\n", m.ResponseExample) } } } }