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97 lines
1.8 KiB
97 lines
1.8 KiB
package zones |
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import ( |
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"bytes" |
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"fmt" |
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"io" |
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"strings" |
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) |
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// WriteEnv generates environment variables for shell scripts |
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func (m *Zones) WriteEnv(w io.Writer) error { |
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var buf bytes.Buffer |
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m.writeEnvVarFn(&buf, genEnvZones, "ZONES") |
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m.ForEachZone(func(z *Zone) bool { |
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m.writeEnvZone(&buf, z) |
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return false |
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}) |
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_, err := buf.WriteTo(w) |
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return err |
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} |
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func (m *Zones) writeEnvZone(w io.Writer, z *Zone) { |
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zoneID := z.ID |
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// ZONE{zoneID} |
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m.writeEnvVar(w, genEnvZoneNodes(z), "ZONE%v", zoneID) |
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// ZONE{zoneID}_NAME |
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m.writeEnvVar(w, z.Name, "ZONE%v_%s", zoneID, "NAME") |
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// ZONE{zoneID}_GW |
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firstNodeID := 0 |
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gatewayID := 0 |
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z.ForEachMachine(func(p *Machine) bool { |
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nodeID := p.ID() |
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if firstNodeID == 0 { |
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firstNodeID = nodeID |
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} |
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if _, found := p.getRingInfo(0); found { |
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gatewayID = nodeID |
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} |
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return gatewayID != 0 |
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}) |
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if gatewayID == 0 { |
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gatewayID = firstNodeID |
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} |
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m.writeEnvVar(w, fmt.Sprintf("%v", gatewayID), "ZONE%v_%s", zoneID, "GW") |
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// ZONE{zoneID}_IP |
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ip, _ := RingZeroAddress(zoneID, gatewayID) |
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m.writeEnvVar(w, ip.String(), "ZONE%v_%s", zoneID, "IP") |
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} |
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func (m *Zones) writeEnvVarFn(w io.Writer, fn func(*Zones) string, name string, args ...any) { |
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var value string |
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if fn != nil { |
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value = fn(m) |
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} |
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m.writeEnvVar(w, value, name, args...) |
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} |
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func (*Zones) writeEnvVar(w io.Writer, value string, name string, args ...any) { |
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if len(args) > 0 { |
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name = fmt.Sprintf(name, args...) |
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} |
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if name != "" { |
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value = strings.TrimSpace(value) |
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_, _ = fmt.Fprintf(w, "%s=%q\n", name, value) |
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} |
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} |
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func genEnvZones(m *Zones) string { |
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s := make([]string, 0, len(m.Zones)) |
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for _, z := range m.Zones { |
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s = append(s, fmt.Sprintf("%v", z.ID)) |
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} |
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return strings.Join(s, " ") |
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} |
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func genEnvZoneNodes(z *Zone) string { |
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s := make([]string, 0, len(z.Machines)) |
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for _, p := range z.Machines { |
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s = append(s, p.Name) |
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} |
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return strings.Join(s, " ") |
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}
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