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diff.go
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diff.go
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package actions
import (
"net/http"
"github.com/gobuffalo/buffalo"
"github.com/gomods/athens/pkg/eventlog"
"github.com/gomods/athens/pkg/storage"
)
type dbDiff struct {
Added []eventlog.Event `json:"added"`
Deleted []eventlog.Event `json:"deleted"`
Deprecated []eventlog.Event `json:"deprecated"`
}
func diffHandler(stg storage.Backend, eLog eventlog.Reader) func(buffalo.Context) error {
return func(c buffalo.Context) error {
lastID := c.Param("lastID")
events, err := eLog.ReadFrom(lastID)
if err != nil {
return err
}
diff, err := buildDiff(events)
if err != nil {
return err
}
return c.Render(http.StatusOK, renderEng.JSON(diff))
}
}
func buildDiff(events []eventlog.Event) (*dbDiff, error) {
ret := &dbDiff{}
for _, evt := range events {
if evt.Op == eventlog.OpAdd {
ret.Added = append(ret.Added, evt)
} else if evt.Op == eventlog.OpDel {
ret.Deleted = append(ret.Deleted, evt)
} else if evt.Op == eventlog.OpDep {
ret.Deprecated = append(ret.Deprecated, evt)
}
}
return ret, nil
}