func wrapSnapshotAction(config *config.TopLevelConfig, action func(config *config.TopLevelConfig, pool, volName string, volume *config.TenantConfig)) {
pools, err := config.ListPools()
if err != nil {
panic(fmt.Sprintf("Runtime configuration incorrect: %v", err))
}
for _, pool := range pools {
volumes, err := config.ListVolumes(pool)
if err != nil {
panic(fmt.Sprintf("Runtime configuration incorrect: %v", err))
}
for volName, volume := range volumes {
if volume.Pool != pool {
panic(fmt.Sprintf("Volume pool prefix %q is not the same as JSON imported %q", volume.Pool, pool))
}
duration, err := time.ParseDuration(volume.Snapshot.Frequency)
if err != nil {
panic(fmt.Sprintf("Runtime configuration incorrect; cannot use %q as a snapshot frequency", volume.Snapshot.Frequency))
}
if volume.UseSnapshots && time.Now().Unix()%int64(duration.Seconds()) == 0 {
go action(config, pool, volName, volume)
}
}
}
}
func iterateVolumes(config *config.TopLevelConfig, dispatch func(v *volumeDispatch)) {
tenants, err := config.ListTenants()
if err != nil {
log.Warn("Could not locate any tenant information; sleeping.")
return
}
for _, tenant := range tenants {
volumes, err := config.ListVolumes(tenant)
if err != nil {
log.Warnf("Could not list volumes for tenant %q: sleeping.", tenant)
return
}
dispatch(&volumeDispatch{config, tenant, volumes})
}
}
func wrapSnapshotAction(config *config.TopLevelConfig, action func(config *config.TopLevelConfig, pool, volName string, volume *config.VolumeConfig)) {
tenants, err := config.ListTenants()
if err != nil {
if conv, ok := err.(*etcd.EtcdError); ok && conv.ErrorCode == 100 {
// should never be hit because we create it at volmaster boot, but yeah.
return
}
log.Errorf("Runtime configuration incorrect: %v", err)
return
}
for _, tenant := range tenants {
volumes, err := config.ListVolumes(tenant)
conv, ok := err.(*etcd.EtcdError)
if err != nil {
if ok && conv.ErrorCode == 100 {
continue
}
log.Errorf("Runtime configuration incorrect: %v", err)
return
}
for volName, volume := range volumes {
duration, err := time.ParseDuration(volume.Options.Snapshot.Frequency)
if err != nil {
log.Errorf("Runtime configuration incorrect; cannot use %q as a snapshot frequency", volume.Options.Snapshot.Frequency)
return
}
if volume.Options.UseSnapshots && time.Now().Unix()%int64(duration.Seconds()) == 0 {
action(config, volume.Options.Pool, volName, volume)
}
}
}
}