8e626e9a62
Signed-off-by: jcsiadal <jeremy.c.siadal@intel.com> Changes default share to /srv/warewulf Update specfile Some changes to match Golang standards
72 lines
1.7 KiB
Go
72 lines
1.7 KiB
Go
package warewulfconf
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import (
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"fmt"
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"io/ioutil"
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"net"
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"errors"
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"github.com/brotherpowers/ipsubnet"
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"github.com/hpcng/warewulf/internal/pkg/wwlog"
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"gopkg.in/yaml.v2"
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)
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var cachedConf ControllerConf
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func New() (ControllerConf, error) {
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var ret ControllerConf = *defaultConfig()
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// Check if cached config is old before re-reading config file
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if !cachedConf.current {
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wwlog.Printf(wwlog.DEBUG, "Opening Warewulf configuration file: %s\n", ConfigFile)
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data, err := ioutil.ReadFile(ConfigFile)
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if err != nil {
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fmt.Printf("Error reading Warewulf configuration file\n")
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return ret, err
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}
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wwlog.Printf(wwlog.DEBUG, "Unmarshaling the Warewulf configuration\n")
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err = yaml.Unmarshal(data, &ret)
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if err != nil {
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return ret, err
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}
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// TODO: Need to add comprehensive config file validator
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// TODO: Change function to guess default IP address and/or mask from local system
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if ret.Ipaddr == "" {
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wwlog.Printf(wwlog.ERROR, "IP address is not configured in warewulfd.conf\n")
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return ret, errors.New("no IP Address")
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}
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if ret.Netmask == "" {
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wwlog.Printf(wwlog.ERROR, "Netmask is not configured in warewulfd.conf\n")
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return ret, errors.New("no netmask")
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}
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if ret.Network == "" {
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mask := net.IPMask(net.ParseIP(ret.Netmask).To4())
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size, _ := mask.Size()
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sub := ipsubnet.SubnetCalculator(ret.Ipaddr, size)
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ret.Network = sub.GetNetworkPortion()
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}
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if ret.Warewulf.Port == 0 {
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ret.Warewulf.Port = defaultPort
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}
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wwlog.Printf(wwlog.DEBUG, "Returning warewulf config object\n")
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cachedConf = ret
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cachedConf.current = true
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} else {
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wwlog.Printf(wwlog.DEBUG, "Returning cached warewulf config object\n")
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// If cached struct isn't empty, use it as the return value
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ret = cachedConf
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}
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return ret, nil
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}
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