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list_all.go
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list_all.go
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package pagination
import (
"fmt"
"github.com/chnsz/golangsdk"
)
// the query type that can be supported
const (
Marker string = "marker" // limit + marker
Offset = "offset" // limit + offset
PageSize = "page" // pagesize + page
)
// QueryOpts is the operation for ListAllItems
// currently, you can change the default marker field with `MarkerField`
type QueryOpts struct {
MarkerField string
}
// ListAllItems is the method to get all pages from initialURL
func ListAllItems(client *golangsdk.ServiceClient, qType string, initialURL string,
opts *QueryOpts) (interface{}, error) {
var queryPage Pager
switch qType {
case Marker:
pageBuilder := func(r PageResult) Page {
p := MarkerPageBase{PageResult: r}
if opts != nil && opts.MarkerField != "" {
p.setMarkerField(opts.MarkerField)
}
p.Owner = p
return p
}
queryPage = NewPager(client, initialURL, pageBuilder)
case Offset:
pageBuilder := func(r PageResult) Page {
return OffsetPageBase{PageResult: r}
}
queryPage = NewPager(client, initialURL, pageBuilder)
case PageSize:
pageBuilder := func(r PageResult) Page {
return PageSizeBase{PageResult: r}
}
queryPage = NewPager(client, initialURL, pageBuilder)
default:
err := golangsdk.ErrUnexpectedType{}
err.Expected = fmt.Sprintf("%s/%s/%s", Marker, Offset, PageSize)
err.Actual = qType
return nil, err
}
queryPage.Headers = map[string]string{"Content-Type": "application/json;charset=utf8"}
pages, err := queryPage.AllPages()
if err != nil {
return nil, err
}
return pages.GetBody(), nil
}