65 lines
1.2 KiB
Go
65 lines
1.2 KiB
Go
package peerfinder
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import (
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"bytes"
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"encoding/json"
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"github.com/tj/go-semver"
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"go.sour.is/ev/pkg/es/event"
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)
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type Info struct {
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ScriptVersion string `json:"script_version"`
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event.AggregateRoot
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}
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var _ event.Aggregate = (*Info)(nil)
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func (a *Info) ApplyEvent(lis ...event.Event) {
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for _, e := range lis {
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switch e := e.(type) {
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case *VersionChanged:
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a.ScriptVersion = e.ScriptVersion
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}
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}
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}
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func (a *Info) MarshalEnviron() ([]byte, error) {
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var b bytes.Buffer
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b.WriteString("SCRIPT_VERSION=")
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b.WriteString(a.ScriptVersion)
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b.WriteRune('\n')
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return b.Bytes(), nil
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}
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func (a *Info) OnUpsert() error {
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if a.StreamVersion() == 0 {
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event.Raise(a, &VersionChanged{ScriptVersion: initVersion})
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}
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current, _ := semver.Parse(initVersion)
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previous, _ := semver.Parse(a.ScriptVersion)
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if current.Compare(previous) > 0 {
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event.Raise(a, &VersionChanged{ScriptVersion: initVersion})
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}
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return nil
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}
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type VersionChanged struct {
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ScriptVersion string `json:"script_version"`
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event.IsEvent
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}
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var _ event.Event = (*VersionChanged)(nil)
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func (e *VersionChanged) MarshalBinary() (text []byte, err error) {
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return json.Marshal(e)
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}
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func (e *VersionChanged) UnmarshalBinary(b []byte) error {
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return json.Unmarshal(b, e)
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}
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