/
aliases.go
97 lines (82 loc) · 2.31 KB
/
aliases.go
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package rollover
import (
"io/ioutil"
"net/http"
"github.com/Laisky/errors/v2"
gutils "github.com/Laisky/go-utils/v4"
"github.com/Laisky/go-utils/v4/json"
"github.com/Laisky/zap"
"github.com/Laisky/go-ramjet/library/log"
)
var (
aliasAPI = []string{"_cat/aliases/", "/?v&format=json"}
)
// AliasesResp is the response of es aliases API
type AliasesResp struct {
Index string `json:"index"`
}
// GetAliasURL return the ES alisese endpoint
func GetAliasURL(st *IdxSetting) string {
return st.API + aliasAPI[0] + st.IdxWriteAlias + aliasAPI[1]
}
// FilterReadyToBeDeleteIndices filter indices that is ready to be deleted
func FilterReadyToBeDeleteIndices(aliasURL string, allIdx []string) (indices []string, err error) {
log.Logger.Debug("FilterReadyToBeDeleteIndices",
zap.String("aliasURL", urlMasking(aliasURL)),
zap.Strings("allIdx", allIdx))
var (
aliases []*AliasesResp
)
aliases, err = LoadAliases(aliasURL)
if err != nil {
return nil, errors.Wrap(err, "try to load aliases got error")
}
for _, idx := range allIdx {
if !IsIdxIsWriteAlias(idx, aliases) {
indices = append(indices, idx)
}
}
return indices, nil
}
// LoadAliases load all indices aliases from ES
func LoadAliases(url string) (aliases []*AliasesResp, err error) {
var (
resp *http.Response
respB []byte
)
resp, err = httpClient.Get(url)
if err != nil {
return nil, errors.Wrap(err, "request aliases api error")
}
defer gutils.LogErr(resp.Body.Close, log.Logger) // nolint: errcheck,gosec
err = gutils.CheckResp(resp)
if err != nil {
return nil, err
}
respB, err = ioutil.ReadAll(resp.Body)
if err != nil {
return nil, errors.Wrap(err, "try to read resp body error")
}
err = json.Unmarshal(respB, &aliases)
if err != nil {
return nil, errors.Wrapf(err, "try to parse json error for json %v", string(respB[:]))
}
return aliases, nil
}
// IsIdxIsWriteAlias check is indices' alias is write-alias
func IsIdxIsWriteAlias(idx string, aliases []*AliasesResp) (ret bool) {
for _, ad := range aliases {
if ad.Index == idx {
log.Logger.Debug("IsIdxIsWriteAlias",
zap.String("index", idx),
zap.String("alias", ad.Index),
zap.Bool("result", true))
return true
}
log.Logger.Debug("IsIdxIsWriteAlias",
zap.String("index", idx),
zap.String("alias", ad.Index),
zap.Bool("result", false))
}
return false
}