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//go:build codegen
// +build codegen
package api
import (
"encoding/json"
"fmt"
"os"
)
// Paginator keeps track of pagination configuration for an API operation.
type Paginator struct {
InputTokens interface{} `json:"input_token"`
OutputTokens interface{} `json:"output_token"`
LimitKey string `json:"limit_key"`
MoreResults string `json:"more_results"`
}
// InputTokensString returns output tokens formatted as a list
func (p *Paginator) InputTokensString() string {
str := p.InputTokens.([]string)
return fmt.Sprintf("%#v", str)
}
// OutputTokensString returns output tokens formatted as a list
func (p *Paginator) OutputTokensString() string {
str := p.OutputTokens.([]string)
return fmt.Sprintf("%#v", str)
}
// used for unmarshaling from the paginators JSON file
type paginationDefinitions struct {
*API
Pagination map[string]Paginator
}
// AttachPaginators attaches pagination configuration from filename to the API.
func (a *API) AttachPaginators(filename string) error {
p := paginationDefinitions{API: a}
f, err := os.Open(filename)
defer f.Close()
if err != nil {
return err
}
err = json.NewDecoder(f).Decode(&p)
if err != nil {
return fmt.Errorf("failed to decode %s, err: %v", filename, err)
}
return p.setup()
}
// setup runs post-processing on the paginator configuration.
func (p *paginationDefinitions) setup() error {
for n, e := range p.Pagination {
if e.InputTokens == nil || e.OutputTokens == nil {
continue
}
if _, ok := p.Operations[n]; !ok {
continue
}
paginator := e
switch t := paginator.InputTokens.(type) {
case string:
paginator.InputTokens = []string{t}
case []interface{}:
toks := []string{}
for _, e := range t {
s := e.(string)
toks = append(toks, s)
}
paginator.InputTokens = toks
}
switch t := paginator.OutputTokens.(type) {
case string:
paginator.OutputTokens = []string{t}
case []interface{}:
toks := []string{}
for _, e := range t {
s := e.(string)
toks = append(toks, s)
}
paginator.OutputTokens = toks
}
p.Operations[n].Paginator = &paginator
}
return nil
}
func enableStopOnSameToken(service string) bool {
switch service {
case "cloudwatchlogs":
return true
default:
return false
}
}
|
