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package cluster
import (
"bytes"
"net/netip"
"sort"
"darvaza.org/core"
"github.com/gofrs/uuid/v5"
"git.jpi.io/amery/jpictl/pkg/ceph"
)
// GetCephFSID returns our Ceph's FSID
func (m *Cluster) GetCephFSID() (uuid.UUID, error) {
if core.IsZero(m.CephFSID) {
// generate one
v, err := uuid.NewV4()
if err != nil {
return uuid.Nil, err
}
m.CephFSID = v
}
return m.CephFSID, nil
}
// GetCephConfig reads the ceph.conf file
func (m *Cluster) GetCephConfig() (*ceph.Config, error) {
data, err := m.ReadFile("ceph.conf")
if err != nil {
return nil, err
}
r := bytes.NewReader(data)
return ceph.NewConfigFromReader(r)
}
// WriteCephConfig writes the ceph.conf file
func (m *Cluster) WriteCephConfig(cfg *ceph.Config) error {
f, err := m.CreateTruncFile("ceph.conf")
if err != nil {
return err
}
defer f.Close()
_, err = cfg.WriteTo(f)
return err
}
// GenCephConfig prepares a ceph.Config using the cluster information
func (m *Cluster) GenCephConfig() (*ceph.Config, error) {
fsid, err := m.GetCephFSID()
if err != nil {
return nil, err
}
cfg := &ceph.Config{
Global: ceph.GlobalConfig{
FSID: fsid,
ClusterNetwork: netip.PrefixFrom(
netip.AddrFrom4([4]byte{10, 0, 0, 0}),
8,
),
},
}
m.ForEachZone(func(z *Zone) bool {
for _, p := range z.GetCephMonitors() {
addr := p.RingOneAddress()
cfg.Global.Monitors = append(cfg.Global.Monitors, p.Name)
cfg.Global.MonitorsAddr = append(cfg.Global.MonitorsAddr, addr)
}
return false
})
return cfg, nil
}
// GetCephMonitors returns the set of Ceph monitors on
// the zone
func (z *Zone) GetCephMonitors() Machines {
var mons Machines
var first, second *Machine
z.ForEachMachine(func(p *Machine) bool {
switch {
case p.CephMonitor:
// it is a monitor
mons = append(mons, p)
case len(mons) > 0:
// zone has a monitor
case first == nil && !p.IsGateway():
// first option for monitor
first = p
case second == nil:
// second option for monitor
second = p
}
return false
})
switch {
case len(mons) > 0:
// ready
case first != nil:
// make first option our monitor
first.CephMonitor = true
mons = append(mons, first)
case second != nil:
// make second option our monitor
second.CephMonitor = true
mons = append(mons, second)
default:
// zone without machines??
panic("unreachable")
}
sort.Sort(mons)
return mons
}