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@ -2,17 +2,25 @@ package cluster
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import ( |
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"io/fs" |
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"path" |
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"sort" |
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"darvaza.org/core" |
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) |
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const ( |
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// ZoneRegionsFileName indicates the file containing
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// region names as references
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ZoneRegionsFileName = "regions" |
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) |
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func (m *Cluster) scan(opts *ScanOptions) error { |
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for _, fn := range []func(*ScanOptions) error{ |
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m.scanDirectory, |
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m.scanMachines, |
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m.scanZoneIDs, |
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m.scanSort, |
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m.initRegions, |
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m.scanGateways, |
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m.scanCephMonitors, |
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} { |
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@ -24,7 +32,7 @@ func (m *Cluster) scan(opts *ScanOptions) error {
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return nil |
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} |
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func (m *Cluster) scanDirectory(_ *ScanOptions) error { |
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func (m *Cluster) scanDirectory(opts *ScanOptions) error { |
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// each directory is a zone
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entries, err := fs.ReadDir(m.dir, ".") |
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if err != nil { |
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@ -33,16 +41,14 @@ func (m *Cluster) scanDirectory(_ *ScanOptions) error {
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for _, e := range entries { |
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if e.IsDir() { |
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z, err := m.newZone(e.Name()) |
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ok, err := m.scanSubdirectory(opts, e.Name()) |
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switch { |
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case err != nil: |
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return core.Wrap(err, e.Name()) |
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case z.Machines.Len() == 0: |
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z.warn(nil). |
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WithField("zone", z.Name). |
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case !ok: |
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m.warn(nil). |
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WithField("zone", e.Name()). |
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Print("empty") |
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default: |
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m.Zones = append(m.Zones, z) |
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} |
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} |
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} |
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@ -50,6 +56,27 @@ func (m *Cluster) scanDirectory(_ *ScanOptions) error {
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return nil |
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} |
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func (m *Cluster) scanSubdirectory(_ *ScanOptions, name string) (bool, error) { |
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z, err := m.newZone(name) |
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switch { |
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case err != nil: |
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// somewhere went wrong scanning the subdirectory
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return false, err |
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case z.Machines.Len() > 0: |
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// zones have machines and the regions they belong
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m.Zones = append(m.Zones, z) |
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return true, nil |
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case len(z.Regions) > 0: |
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// regions have no machines but can include
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// other regions
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m.appendRegionRegions(name, z.Regions...) |
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return true, nil |
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default: |
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// empty
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return false, nil |
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} |
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} |
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func (m *Cluster) newZone(name string) (*Zone, error) { |
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z := &Zone{ |
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zones: m, |
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@ -154,31 +181,65 @@ func (z *Zone) scan() error {
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} |
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for _, e := range entries { |
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if e.IsDir() { |
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m := &Machine{ |
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zone: z, |
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logger: z, |
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Name: e.Name(), |
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} |
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name := e.Name() |
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m.debug(). |
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WithField("node", m.Name). |
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switch { |
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case name == ZoneRegionsFileName: |
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err = z.loadRegions() |
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case e.IsDir(): |
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err = z.scanSubdirectory(name) |
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default: |
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z.warn(nil). |
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WithField("zone", z.Name). |
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Print("found") |
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WithField("filename", name). |
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Print("unknown") |
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} |
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if err := m.init(); err != nil { |
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m.error(err). |
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WithField("node", m.Name). |
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WithField("zone", z.Name). |
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Print() |
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if err != nil { |
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return err |
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} |
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} |
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return err |
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} |
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return nil |
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} |
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z.Machines = append(z.Machines, m) |
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func (z *Zone) loadRegions() error { |
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filename := path.Join(z.Name, ZoneRegionsFileName) |
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regions, err := z.zones.ReadLines(filename) |
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if err == nil { |
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// parsed
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err = z.appendRegions(regions...) |
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if err != nil { |
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err = core.Wrap(err, filename) |
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} |
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} |
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return err |
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} |
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func (z *Zone) scanSubdirectory(name string) error { |
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m := &Machine{ |
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zone: z, |
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logger: z, |
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Name: name, |
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} |
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m.debug(). |
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WithField("node", m.Name). |
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WithField("zone", z.Name). |
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Print("found") |
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if err := m.init(); err != nil { |
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m.error(err). |
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WithField("node", m.Name). |
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WithField("zone", z.Name). |
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Print() |
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return err |
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} |
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z.Machines = append(z.Machines, m) |
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return nil |
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} |
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