open-nomad/nomad/config.go

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2015-06-01 15:49:10 +00:00
package nomad
import (
"fmt"
"io"
"github.com/hashicorp/raft"
)
// These are the protocol versions that Nomad can understand
const (
ProtocolVersionMin uint8 = 1
ProtocolVersionMax = 1
)
// Config is used to parameterize the server
type Config struct {
// Bootstrap mode is used to bring up the first Consul server.
// It is required so that it can elect a leader without any
// other nodes being present
Bootstrap bool
// DataDir is the directory to store our state in
DataDir string
// LogOutput is the location to write logs to. If this is not set,
// logs will go to stderr.
LogOutput io.Writer
// ProtocolVersion is the protocol version to speak. This must be between
// ProtocolVersionMin and ProtocolVersionMax.
ProtocolVersion uint8
// RaftConfig is the configuration used for Raft in the local DC
RaftConfig *raft.Config
}
// CheckVersion is used to check if the ProtocolVersion is valid
func (c *Config) CheckVersion() error {
if c.ProtocolVersion < ProtocolVersionMin {
return fmt.Errorf("Protocol version '%d' too low. Must be in range: [%d, %d]",
c.ProtocolVersion, ProtocolVersionMin, ProtocolVersionMax)
} else if c.ProtocolVersion > ProtocolVersionMax {
return fmt.Errorf("Protocol version '%d' too high. Must be in range: [%d, %d]",
c.ProtocolVersion, ProtocolVersionMin, ProtocolVersionMax)
}
return nil
}
// DefaultConfig returns the default configuration
func DefaultConfig() *Config {
c := &Config{
ProtocolVersion: ProtocolVersionMax,
RaftConfig: raft.DefaultConfig(),
}
return c
}