75 lines
1.6 KiB
Go
75 lines
1.6 KiB
Go
package initialize
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import (
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"errors"
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"fmt"
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"os"
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"path"
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"strings"
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"github.com/coreos/coreos-cloudinit/system"
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)
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type EtcdEnvironment map[string]string
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func (ec EtcdEnvironment) normalized() map[string]string {
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out := make(map[string]string, len(ec))
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for key, val := range ec {
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key = strings.ToUpper(key)
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key = strings.Replace(key, "-", "_", -1)
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out[key] = val
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}
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return out
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}
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func (ec EtcdEnvironment) String() (out string) {
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norm := ec.normalized()
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if val, ok := norm["DISCOVERY_URL"]; ok {
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delete(norm, "DISCOVERY_URL")
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if _, ok := norm["DISCOVERY"]; !ok {
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norm["DISCOVERY"] = val
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}
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}
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public := os.Getenv("COREOS_PUBLIC_IPV4")
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private := os.Getenv("COREOS_PRIVATE_IPV4")
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out += "[Service]\n"
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for key, val := range norm {
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if public != "" {
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val = strings.Replace(val, "$public_ipv4", public, -1)
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}
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if private != "" {
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val = strings.Replace(val, "$private_ipv4", private, -1)
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}
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out += fmt.Sprintf("Environment=\"ETCD_%s=%s\"\n", key, val)
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}
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return
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}
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// Write an EtcdEnvironment to the appropriate path on disk for etcd.service
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func WriteEtcdEnvironment(env EtcdEnvironment, root string) error {
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if _, ok := env["name"]; !ok {
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if machineID := system.MachineID(root); machineID != "" {
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env["name"] = machineID
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} else if hostname, err := system.Hostname(); err == nil {
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env["name"] = hostname
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} else {
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return errors.New("Unable to determine default etcd name")
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}
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}
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file := system.File{
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Path: path.Join(root, "run", "systemd", "system", "etcd.service.d", "20-cloudinit.conf"),
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RawFilePermissions: "0644",
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Content: env.String(),
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}
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return system.WriteFile(&file)
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}
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