[Feature] Add elastic client #10
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,133 @@ | ||
| package elastic_cloud | ||
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| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "errors" | ||
| "fmt" | ||
| "log" | ||
| "os" | ||
| "strconv" | ||
| "strings" | ||
| "time" | ||
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| "github.com/elastic/go-elasticsearch/v8" | ||
| "github.com/elastic/go-elasticsearch/v8/esapi" | ||
| "github.com/manifoldco/promptui" | ||
| "github.com/urfave/cli/v2" | ||
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| envconfig "github.com/sethvargo/go-envconfig" | ||
| ctrl "sigs.k8s.io/controller-runtime" | ||
| ) | ||
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| // Config for Elasticsearch client | ||
| type EsConfig struct { | ||
| ApiKey string `env:"EC_API_KEY"` | ||
| CloudId string `env:"EC_CLOUD_ID"` | ||
| } | ||
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| type IndexSettings struct { | ||
| IndexItem struct { | ||
| IndexDetail struct { | ||
| CreationDate string `json:"creation_date"` | ||
| } `json:"index"` | ||
| } `json:"settings"` | ||
| } | ||
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| type Indices map[string]IndexSettings | ||
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| var setupLog = ctrl.Log.WithName("setup") | ||
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| func DeleteStaleIndices(c *cli.Context) error { | ||
| force := c.Bool("force") | ||
| deleteList := make([]string, 0) | ||
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| var config EsConfig | ||
| if err := envconfig.Process(context.Background(), &config); err != nil { | ||
| setupLog.Error(err, "unable to parse environment variables") | ||
| os.Exit(1) | ||
| } | ||
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| client, err := elasticsearch.NewClient(elasticsearch.Config{APIKey: config.ApiKey, CloudID: config.CloudId}) | ||
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| if err != nil { | ||
| return err | ||
| } | ||
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| settings, err := esapi.IndicesGetSettingsRequest{FilterPath: []string{"*.settings.index.creation_date"}}.Do(context.TODO(), client) | ||
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| if err != nil { | ||
| return err | ||
| } | ||
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| list := Indices{} | ||
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| if err := json.NewDecoder(settings.Body).Decode(&list); err != nil { | ||
| log.Fatalf("Error parsing the response body: %s", err) | ||
| } else { | ||
| for k, i := range list { | ||
| if strings.Contains(k, "elasticsearch_index") { | ||
| now := time.Now().UnixMilli() | ||
| created, err := strconv.ParseInt(i.IndexItem.IndexDetail.CreationDate, 10, 64) | ||
|
There was a problem hiding this comment. Using the creation date is a very rudimentary way of identifying stale indices because it does not identify the last time an index was updated. I believe it may be possible to use data from the shards API to determine how 'fresh' an index is based on refresh, write or read metrics. However because content is ephemeral and these are development indices we don't need to be too concerned about destructive requests. |
||
| if err != nil { | ||
| return err | ||
| } | ||
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| diffInDays := (now - created) / (1000 * 60 * 60 * 24) | ||
| if diffInDays > 30 { | ||
| fmt.Printf("The index %+v is %v days old and will be marked for deletion\n", k, diffInDays) | ||
| deleteList = append(deleteList, k) | ||
| } | ||
| } | ||
| } | ||
| if c := len(deleteList); c > 0 { | ||
| if force { | ||
| fmt.Println("Deleting indices marked for deletion.") | ||
| statusCode, err := deleteIndices(client, deleteList, c) | ||
| if err != nil { | ||
| return err | ||
| } else { | ||
| if statusCode == 200 { | ||
| fmt.Printf("Deletion request failed. Status code %+v", statusCode) | ||
| } else { | ||
| fmt.Printf("%+v indices successfully deleted.", c) | ||
| } | ||
| } | ||
| } else { | ||
| prompt := promptui.Prompt{ | ||
| Label: "Delete indices", | ||
| IsConfirm: true, | ||
| } | ||
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| prompt_result, _ := prompt.Run() | ||
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| if prompt_result == "y" { | ||
| _, err := deleteIndices(client, deleteList, c) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } else { | ||
| fmt.Printf("Operation cancelled.\nThere are %+v indices marked for deletion.\n", c) | ||
| } | ||
| } | ||
| } else { | ||
| fmt.Printf("No indices meet the criteria for deletion.") | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
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| func deleteIndices(client *elasticsearch.Client, deleteList []string, c int) (int, error) { | ||
| res, err := esapi.IndicesDeleteRequest{Index: deleteList}.Do(context.TODO(), client) | ||
| if err != nil { | ||
| return res.StatusCode, err | ||
| } else { | ||
| if res.StatusCode == 200 { | ||
| fmt.Printf("Deletion request failed. Status code %+v", res.StatusCode) | ||
| return res.StatusCode, errors.New("non 200 status code") | ||
| } else { | ||
| fmt.Printf("%+v indices successfully deleted.", c) | ||
| return res.StatusCode, nil | ||
| } | ||
| } | ||
| } | ||
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Would this be better as a flag or argument instead of an envvar?
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Because they're creds I thought it safer to keep them stored as env vars but I suppose we could set them as env vars and reference them in the argument. Am I being too cautious in not allowing a user to expose those vars directly in an arg on the cli (and therefore making it available in their shell history)?