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flag-registry.go
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flag-registry.go
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package cmd
import (
"github.com/pydio/cells/common/micro/transport/grpc"
"github.com/pydio/cells/common/utils/net"
"github.com/spf13/pflag"
"github.com/spf13/viper"
"net/url"
"github.com/pydio/cells/common/log"
"github.com/pydio/cells/common/micro/broker"
"github.com/pydio/cells/common/micro/registry"
cells_registry "github.com/pydio/cells/common/registry"
)
// addRegistryFlags registers necessary flags to connect to the registry
func addRegistryFlags(flags *pflag.FlagSet, hideAll ...bool) {
flags.String("registry", "memory", "Registry used to manage services (currently nats only)")
flags.String("broker", "memory", "Pub/sub service for events between services (currently nats only)")
flags.String("transport", "grpc", "Transport protocol for RPC")
flags.Int("port_registry", net.GetAvailableRegistryAltPort(), "Port used to start a registry discovery service")
flags.Int("port_broker", net.GetAvailableBrokerAltPort(), "Port used to start a broker discovery service")
if len(hideAll) > 0 && hideAll[0] {
flags.MarkHidden("registry")
flags.MarkHidden("broker")
flags.MarkHidden("transport")
}
}
// bindViperFlags visits all flags in FlagSet and bind their key to the corresponding viper variable
func bindViperFlags(flags *pflag.FlagSet, replaceKeys map[string]string) {
flags.VisitAll(func(flag *pflag.Flag) {
key := flag.Name
if replace, ok := replaceKeys[flag.Name]; ok {
key = replace
}
viper.BindPFlag(key, flag)
})
}
// handleRegistry looks up for "registry" key in viper and starts the registry
func handleRegistry(){
addr := viper.GetString("registry")
u, err := url.Parse(addr)
if err != nil {
log.Fatal("Registry address is not right")
return
}
switch u.Scheme {
case "grpc":
registry.EnableService(u.Hostname(), u.Port())
case "memory":
fallthrough
default:
registry.EnableMemory()
}
}
// handleBroker looks up for "broker" key in viper and starts the registry
func handleBroker() {
addr := viper.GetString("broker")
u, err := url.Parse(addr)
if err != nil {
log.Fatal("broker address is not right")
return
}
switch u.Scheme {
case "nats":
broker.EnableNATS()
case "stan":
broker.EnableSTAN()
case "http":
broker.EnableHTTP()
case "grpc":
broker.EnableService(u.Hostname(), u.Port())
case "memory":
fallthrough
default:
broker.EnableMemory()
}
}
// handleTransport looks up for "transport" key in viper and starts the registry
func handleTransport() {
switch viper.Get("transport") {
case "grpc":
fallthrough
default:
grpc.Enable()
}
}
// initServices initializes the Cells internal registry (different from micro registry)
func initServices() {
cells_registry.Default.BeforeInit()
cells_registry.Init()
cells_registry.Default.AfterInit()
}