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config.go
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config.go
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package basil
import (
"github.com/kylelemons/go-gypsy/yaml"
"strconv"
"time"
)
type Config struct {
Host string
MessageBus MessageBusConfig
Capacity CapacityConfig
AdvertiseInterval time.Duration
}
type MessageBusConfig struct {
Host string
Port int
Username string
Password string
}
type CapacityConfig struct {
MemoryInBytes int
DiskInBytes int
}
var kilobyte = 1024
var megabyte = kilobyte * 1024
var gigabyte = megabyte * 1024
var DefaultConfig = Config{
Host: "127.0.0.1",
MessageBus: MessageBusConfig{
Host: "127.0.0.1",
Port: 4222,
},
Capacity: CapacityConfig{
MemoryInBytes: 1 * gigabyte,
DiskInBytes: 1 * gigabyte,
},
AdvertiseInterval: 10 * time.Second,
}
func LoadConfig(configFilePath string) Config {
file := yaml.ConfigFile(configFilePath)
host := file.Require("host")
mbusHost := file.Require("message_bus.host")
mbusPort, err := strconv.Atoi(file.Require("message_bus.port"))
if err != nil {
panic("non-numeric message bus port")
}
mbusUsername, _ := file.Get("message_bus.username")
mbusPassword, _ := file.Get("message_bus.password")
capacityMemory, err := strconv.Atoi(file.Require("capacity.memory"))
if err != nil {
panic("non-numeric memory capacity")
}
capacityDisk, err := strconv.Atoi(file.Require("capacity.disk"))
if err != nil {
panic("non-numeric disk capacity")
}
advertiseInterval, err := strconv.Atoi(file.Require("advertise_interval"))
if err != nil {
panic("non-numeric advertise interval")
}
return Config{
Host: host,
MessageBus: MessageBusConfig{
Host: mbusHost,
Port: mbusPort,
Username: mbusUsername,
Password: mbusPassword,
},
Capacity: CapacityConfig{
MemoryInBytes: capacityMemory * 1024 * 1024,
DiskInBytes: capacityDisk * 1024 * 1024,
},
AdvertiseInterval: time.Duration(advertiseInterval) * time.Second,
}
}