8060735732
Generalize single gRPC interface of the storage node to a group of interfaces. Each interface calls the same RPC handler. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
100 lines
2.2 KiB
Go
100 lines
2.2 KiB
Go
package grpcconfig
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import (
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"errors"
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"strconv"
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"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
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)
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var (
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errEndpointNotSet = errors.New("empty/not set endpoint, see `grpc.endpoint` section")
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errTLSKeyNotSet = errors.New("empty/not set TLS key file path, see `grpc.tls.key` section")
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errTLSCertNotSet = errors.New("empty/not set TLS certificate file path, see `grpc.tls.certificate` section")
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)
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// Config is a wrapper over the config section
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// which provides access to gRPC server configurations.
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type Config config.Config
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// Endpoint returns value of "endpoint" config parameter.
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//
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// Panics if value is not a non-empty string.
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func (x *Config) Endpoint() string {
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v := config.StringSafe(
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(*config.Config)(x),
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"endpoint")
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if v == "" {
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panic(errEndpointNotSet)
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}
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return v
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}
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// TLS returns "tls" subsection as a TLSConfig.
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//
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// Returns nil if "enabled" value of "tls" subsection is false.
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func (x *Config) TLS() *TLSConfig {
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sub := (*config.Config)(x).
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Sub("tls")
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if !config.BoolSafe(sub, "enabled") {
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return nil
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}
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return &TLSConfig{
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cfg: sub,
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}
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}
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// TLSConfig is a wrapper over the config section
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// which provides access to TLS configurations
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// of the gRPC server.
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type TLSConfig struct {
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cfg *config.Config
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}
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// KeyFile returns value of "key" config parameter.
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//
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// Panics if value is not a non-empty string.
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func (tls TLSConfig) KeyFile() string {
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v := config.StringSafe(tls.cfg, "key")
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if v == "" {
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panic(errTLSKeyNotSet)
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}
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return v
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}
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// CertificateFile returns value of "certificate" config parameter.
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//
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// Panics if value is not a non-empty string.
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func (tls TLSConfig) CertificateFile() string {
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v := config.StringSafe(tls.cfg, "certificate")
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if v == "" {
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panic(errTLSCertNotSet)
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}
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return v
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}
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// IterateEndpoints iterates over subsections ["0":"N") (N - "num" value)
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// of "grpc" section of c, wrap them into Config and passes to f.
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//
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// Panics if N is not a positive number.
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func IterateEndpoints(c *config.Config, f func(*Config)) {
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c = c.Sub("grpc")
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num := config.Uint(c, "num")
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if num == 0 {
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panic("no gRPC server configured")
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}
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for i := uint64(0); i < num; i++ {
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si := strconv.FormatUint(i, 10)
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sc := (*Config)(c.Sub(si))
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f(sc)
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}
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}
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