package cliutil import ( "context" "errors" "fmt" "net/http" "net/url" "os" "os/signal" "strings" "syscall" "github.com/mitchellh/go-homedir" "github.com/urfave/cli/v2" "golang.org/x/xerrors" "github.com/filecoin-project/go-jsonrpc" "github.com/filecoin-project/lotus/api" "github.com/filecoin-project/lotus/api/client" "github.com/filecoin-project/lotus/api/v0api" "github.com/filecoin-project/lotus/api/v1api" "github.com/filecoin-project/lotus/node/repo" ) const ( metadataTraceContext = "traceContext" ) // GetAPIInfo returns the API endpoint to use for the specified kind of repo. // // The order of precedence is as follows: // // 1. *-api-url command line flags. // 2. *_API_INFO environment variables // 3. deprecated *_API_INFO environment variables // 4. *-repo command line flags. func GetAPIInfo(ctx *cli.Context, t repo.RepoType) (APIInfo, error) { // Check if there was a flag passed with the listen address of the API // server (only used by the tests) for _, f := range t.APIFlags() { if !ctx.IsSet(f) { continue } strma := ctx.String(f) strma = strings.TrimSpace(strma) return APIInfo{Addr: strma}, nil } // // Note: it is not correct/intuitive to prefer environment variables over // CLI flags (repo flags below). // primaryEnv, fallbacksEnvs, deprecatedEnvs := t.APIInfoEnvVars() env, ok := os.LookupEnv(primaryEnv) if ok { return ParseApiInfo(env), nil } for _, env := range deprecatedEnvs { env, ok := os.LookupEnv(env) if ok { log.Warnf("Using deprecated env(%s) value, please use env(%s) instead.", env, primaryEnv) return ParseApiInfo(env), nil } } for _, f := range t.RepoFlags() { // cannot use ctx.IsSet because it ignores default values path := ctx.String(f) if path == "" { continue } p, err := homedir.Expand(path) if err != nil { return APIInfo{}, xerrors.Errorf("could not expand home dir (%s): %w", f, err) } r, err := repo.NewFS(p) if err != nil { return APIInfo{}, xerrors.Errorf("could not open repo at path: %s; %w", p, err) } exists, err := r.Exists() if err != nil { return APIInfo{}, xerrors.Errorf("repo.Exists returned an error: %w", err) } if !exists { return APIInfo{}, errors.New("repo directory does not exist. Make sure your configuration is correct") } ma, err := r.APIEndpoint() if err != nil { return APIInfo{}, xerrors.Errorf("could not get api endpoint: %w", err) } token, err := r.APIToken() if err != nil { log.Warnf("Couldn't load CLI token, capabilities may be limited: %v", err) } return APIInfo{ Addr: ma.String(), Token: token, }, nil } for _, env := range fallbacksEnvs { env, ok := os.LookupEnv(env) if ok { return ParseApiInfo(env), nil } } return APIInfo{}, fmt.Errorf("could not determine API endpoint for node type: %v", t.Type()) } func GetRawAPI(ctx *cli.Context, t repo.RepoType, version string) (string, http.Header, error) { ainfo, err := GetAPIInfo(ctx, t) if err != nil { return "", nil, xerrors.Errorf("could not get API info for %s: %w", t.Type(), err) } addr, err := ainfo.DialArgs(version) if err != nil { return "", nil, xerrors.Errorf("could not get DialArgs: %w", err) } if IsVeryVerbose { _, _ = fmt.Fprintf(ctx.App.Writer, "using raw API %s endpoint: %s\n", version, addr) } return addr, ainfo.AuthHeader(), nil } func GetCommonAPI(ctx *cli.Context) (api.CommonNet, jsonrpc.ClientCloser, error) { ti, ok := ctx.App.Metadata["repoType"] if !ok { log.Errorf("unknown repo type, are you sure you want to use GetCommonAPI?") ti = repo.FullNode } t, ok := ti.(repo.RepoType) if !ok { log.Errorf("repoType type does not match the type of repo.RepoType") } if tn, ok := ctx.App.Metadata["testnode-storage"]; ok { return tn.(api.StorageMiner), func() {}, nil } if tn, ok := ctx.App.Metadata["testnode-full"]; ok { return tn.(api.FullNode), func() {}, nil } addr, headers, err := GetRawAPI(ctx, t, "v0") if err != nil { return nil, nil, err } return client.NewCommonRPCV0(ctx.Context, addr, headers) } func GetFullNodeAPI(ctx *cli.Context) (v0api.FullNode, jsonrpc.ClientCloser, error) { // use the mocked API in CLI unit tests, see cli/mocks_test.go for mock definition if mock, ok := ctx.App.Metadata["test-full-api"]; ok { return &v0api.WrapperV1Full{FullNode: mock.(v1api.FullNode)}, func() {}, nil } if tn, ok := ctx.App.Metadata["testnode-full"]; ok { return &v0api.WrapperV1Full{FullNode: tn.(v1api.FullNode)}, func() {}, nil } addr, headers, err := GetRawAPI(ctx, repo.FullNode, "v0") if err != nil { return nil, nil, err } if IsVeryVerbose { _, _ = fmt.Fprintln(ctx.App.Writer, "using full node API v0 endpoint:", addr) } return client.NewFullNodeRPCV0(ctx.Context, addr, headers) } func GetFullNodeAPIV1(ctx *cli.Context) (v1api.FullNode, jsonrpc.ClientCloser, error) { if tn, ok := ctx.App.Metadata["testnode-full"]; ok { return tn.(v1api.FullNode), func() {}, nil } addr, headers, err := GetRawAPI(ctx, repo.FullNode, "v1") if err != nil { return nil, nil, err } if IsVeryVerbose { _, _ = fmt.Fprintln(ctx.App.Writer, "using full node API v1 endpoint:", addr) } v1API, closer, err := client.NewFullNodeRPCV1(ctx.Context, addr, headers) if err != nil { return nil, nil, err } v, err := v1API.Version(ctx.Context) if err != nil { return nil, nil, err } if !v.APIVersion.EqMajorMinor(api.FullAPIVersion1) { return nil, nil, xerrors.Errorf("Remote API version didn't match (expected %s, remote %s)", api.FullAPIVersion1, v.APIVersion) } return v1API, closer, nil } type GetStorageMinerOptions struct { PreferHttp bool } type GetStorageMinerOption func(*GetStorageMinerOptions) func StorageMinerUseHttp(opts *GetStorageMinerOptions) { opts.PreferHttp = true } func GetStorageMinerAPI(ctx *cli.Context, opts ...GetStorageMinerOption) (api.StorageMiner, jsonrpc.ClientCloser, error) { var options GetStorageMinerOptions for _, opt := range opts { opt(&options) } if tn, ok := ctx.App.Metadata["testnode-storage"]; ok { return tn.(api.StorageMiner), func() {}, nil } addr, headers, err := GetRawAPI(ctx, repo.StorageMiner, "v0") if err != nil { return nil, nil, err } if options.PreferHttp { u, err := url.Parse(addr) if err != nil { return nil, nil, xerrors.Errorf("parsing miner api URL: %w", err) } switch u.Scheme { case "ws": u.Scheme = "http" case "wss": u.Scheme = "https" } addr = u.String() } if IsVeryVerbose { _, _ = fmt.Fprintln(ctx.App.Writer, "using miner API v0 endpoint:", addr) } return client.NewStorageMinerRPCV0(ctx.Context, addr, headers) } func GetWorkerAPI(ctx *cli.Context) (api.Worker, jsonrpc.ClientCloser, error) { addr, headers, err := GetRawAPI(ctx, repo.Worker, "v0") if err != nil { return nil, nil, err } if IsVeryVerbose { _, _ = fmt.Fprintln(ctx.App.Writer, "using worker API v0 endpoint:", addr) } return client.NewWorkerRPCV0(ctx.Context, addr, headers) } func GetMarketsAPI(ctx *cli.Context) (api.StorageMiner, jsonrpc.ClientCloser, error) { // to support lotus-miner cli tests. if tn, ok := ctx.App.Metadata["testnode-storage"]; ok { return tn.(api.StorageMiner), func() {}, nil } addr, headers, err := GetRawAPI(ctx, repo.Markets, "v0") if err != nil { return nil, nil, err } if IsVeryVerbose { _, _ = fmt.Fprintln(ctx.App.Writer, "using markets API v0 endpoint:", addr) } // the markets node is a specialised miner's node, supporting only the // markets API, which is a subset of the miner API. All non-markets // operations will error out with "unsupported". return client.NewStorageMinerRPCV0(ctx.Context, addr, headers) } func GetGatewayAPI(ctx *cli.Context) (api.Gateway, jsonrpc.ClientCloser, error) { addr, headers, err := GetRawAPI(ctx, repo.FullNode, "v1") if err != nil { return nil, nil, err } if IsVeryVerbose { _, _ = fmt.Fprintln(ctx.App.Writer, "using gateway API v1 endpoint:", addr) } return client.NewGatewayRPCV1(ctx.Context, addr, headers) } func GetGatewayAPIV0(ctx *cli.Context) (v0api.Gateway, jsonrpc.ClientCloser, error) { addr, headers, err := GetRawAPI(ctx, repo.FullNode, "v0") if err != nil { return nil, nil, err } if IsVeryVerbose { _, _ = fmt.Fprintln(ctx.App.Writer, "using gateway API v0 endpoint:", addr) } return client.NewGatewayRPCV0(ctx.Context, addr, headers) } func DaemonContext(cctx *cli.Context) context.Context { if mtCtx, ok := cctx.App.Metadata[metadataTraceContext]; ok { return mtCtx.(context.Context) } return context.Background() } // ReqContext returns context for cli execution. Calling it for the first time // installs SIGTERM handler that will close returned context. // Not safe for concurrent execution. func ReqContext(cctx *cli.Context) context.Context { tCtx := DaemonContext(cctx) ctx, done := context.WithCancel(tCtx) sigChan := make(chan os.Signal, 2) go func() { <-sigChan done() }() signal.Notify(sigChan, syscall.SIGTERM, syscall.SIGINT, syscall.SIGHUP) return ctx }