87 lines
2.3 KiB
Go
87 lines
2.3 KiB
Go
/*
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Package options contains a set of common CLI options and helper functions to use them.
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*/
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package options
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import (
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"context"
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"errors"
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"time"
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"github.com/nspcc-dev/neo-go/pkg/config/netmode"
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"github.com/nspcc-dev/neo-go/pkg/rpcclient"
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"github.com/urfave/cli"
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)
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// DefaultTimeout is the default timeout used for RPC requests.
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const DefaultTimeout = 10 * time.Second
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// RPCEndpointFlag is a long flag name for an RPC endpoint. It can be used to
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// check for flag presence in the context.
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const RPCEndpointFlag = "rpc-endpoint"
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// Network is a set of flags for choosing the network to operate on
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// (privnet/mainnet/testnet).
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var Network = []cli.Flag{
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cli.BoolFlag{Name: "privnet, p"},
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cli.BoolFlag{Name: "mainnet, m"},
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cli.BoolFlag{Name: "testnet, t"},
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cli.BoolFlag{Name: "unittest", Hidden: true},
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}
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// RPC is a set of flags used for RPC connections (endpoint and timeout).
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var RPC = []cli.Flag{
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cli.StringFlag{
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Name: RPCEndpointFlag + ", r",
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Usage: "RPC node address",
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},
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cli.DurationFlag{
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Name: "timeout, s",
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Value: DefaultTimeout,
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Usage: "Timeout for the operation",
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},
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}
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var errNoEndpoint = errors.New("no RPC endpoint specified, use option '--" + RPCEndpointFlag + "' or '-r'")
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// GetNetwork examines Context's flags and returns the appropriate network. It
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// defaults to PrivNet if no flags are given.
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func GetNetwork(ctx *cli.Context) netmode.Magic {
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var net = netmode.PrivNet
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if ctx.Bool("testnet") {
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net = netmode.TestNet
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}
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if ctx.Bool("mainnet") {
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net = netmode.MainNet
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}
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if ctx.Bool("unittest") {
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net = netmode.UnitTestNet
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}
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return net
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}
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// GetTimeoutContext returns a context.Context with the default or a user-set timeout.
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func GetTimeoutContext(ctx *cli.Context) (context.Context, func()) {
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dur := ctx.Duration("timeout")
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if dur == 0 {
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dur = DefaultTimeout
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}
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return context.WithTimeout(context.Background(), dur)
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}
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// GetRPCClient returns an RPC client instance for the given Context.
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func GetRPCClient(gctx context.Context, ctx *cli.Context) (*rpcclient.Client, cli.ExitCoder) {
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endpoint := ctx.String(RPCEndpointFlag)
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if len(endpoint) == 0 {
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return nil, cli.NewExitError(errNoEndpoint, 1)
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}
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c, err := rpcclient.New(gctx, endpoint, rpcclient.Options{})
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if err != nil {
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return nil, cli.NewExitError(err, 1)
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}
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err = c.Init()
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if err != nil {
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return nil, cli.NewExitError(err, 1)
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}
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return c, nil
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}
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