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| 1 | +// Copyright © 2019 BoxBoat engineering@boxboat.com |
| 2 | +// |
| 3 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | +// you may not use this file except in compliance with the License. |
| 5 | +// You may obtain a copy of the License at |
| 6 | +// |
| 7 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | +// |
| 9 | +// Unless required by applicable law or agreed to in writing, software |
| 10 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | +// See the License for the specific language governing permissions and |
| 13 | +// limitations under the License. |
| 14 | + |
| 15 | +package cmd |
| 16 | + |
| 17 | +import ( |
| 18 | + "encoding/json" |
| 19 | + "errors" |
| 20 | + "fmt" |
| 21 | + elasticsearch6 "github.com/elastic/go-elasticsearch/v6" |
| 22 | + elasticsearch7 "github.com/elastic/go-elasticsearch/v7" |
| 23 | + "github.com/spf13/cobra" |
| 24 | + "github.com/spf13/viper" |
| 25 | + "strconv" |
| 26 | + "time" |
| 27 | +) |
| 28 | + |
| 29 | +var ( |
| 30 | + esDryRun bool |
| 31 | + esPrettyPrint bool |
| 32 | + esURL string |
| 33 | + esVersion string |
| 34 | + esAPIKey string |
| 35 | + esUsername string |
| 36 | + esPassword string |
| 37 | + esRetentionDays int |
| 38 | + es6Client *elasticsearch6.Client |
| 39 | + es7Client *elasticsearch7.Client |
| 40 | +) |
| 41 | + |
| 42 | +func getEs6Client() *elasticsearch6.Client { |
| 43 | + Logger.Debugln("Using v6 client") |
| 44 | + if es6Client == nil { |
| 45 | + cfg := elasticsearch6.Config{ |
| 46 | + Addresses: []string{ |
| 47 | + esURL, |
| 48 | + }, |
| 49 | + Username: esUsername, |
| 50 | + Password: esPassword, |
| 51 | + APIKey: esAPIKey, |
| 52 | + } |
| 53 | + Logger.Debugf("Username:[%s]", cfg.Username) |
| 54 | + Logger.Debugf("Password:[%s]", cfg.Password) |
| 55 | + Logger.Debugf("ApiKey:[%s]", cfg.APIKey) |
| 56 | + var err error |
| 57 | + es6Client, err = elasticsearch6.NewClient(cfg) |
| 58 | + HandleError(err) |
| 59 | + } |
| 60 | + return es6Client |
| 61 | +} |
| 62 | + |
| 63 | +func getEs7Client() *elasticsearch7.Client { |
| 64 | + Logger.Debugln("Using v7 client") |
| 65 | + if es7Client == nil { |
| 66 | + cfg := elasticsearch7.Config{ |
| 67 | + Addresses: []string{ |
| 68 | + esURL, |
| 69 | + }, |
| 70 | + Username: esUsername, |
| 71 | + Password: esPassword, |
| 72 | + APIKey: esAPIKey, |
| 73 | + } |
| 74 | + Logger.Debugf("Username:[%s]", cfg.Username) |
| 75 | + Logger.Debugf("Password:[%s]", cfg.Password) |
| 76 | + Logger.Debugf("ApiKey:[%s]", cfg.APIKey) |
| 77 | + var err error |
| 78 | + es7Client, err = elasticsearch7.NewClient(cfg) |
| 79 | + HandleError(err) |
| 80 | + } |
| 81 | + return es7Client |
| 82 | +} |
| 83 | + |
| 84 | +func deleteIndex(delete []string) { |
| 85 | + if esVersion == "v6" { |
| 86 | + esClient := getEs6Client() |
| 87 | + esClient.Indices.Delete(delete) |
| 88 | + } else if esVersion == "v7" { |
| 89 | + esClient := getEs7Client() |
| 90 | + esClient.Indices.Delete(delete) |
| 91 | + } |
| 92 | +} |
| 93 | + |
| 94 | +func findIndices(search []string) map[string]interface{} { |
| 95 | + |
| 96 | + var indices map[string]interface{} |
| 97 | + |
| 98 | + if esVersion == "v6" { |
| 99 | + esClient := getEs6Client() |
| 100 | + response, err := esClient.Indices.Get(search) |
| 101 | + HandleError(err) |
| 102 | + if response.IsError() { |
| 103 | + HandleError( |
| 104 | + fmt.Errorf( |
| 105 | + "Error: %s", |
| 106 | + response.String())) |
| 107 | + } |
| 108 | + json.NewDecoder(response.Body).Decode(&indices) |
| 109 | + |
| 110 | + } else if esVersion == "v7" { |
| 111 | + esClient := getEs7Client() |
| 112 | + response, err := esClient.Indices.Get(search) |
| 113 | + HandleError(err) |
| 114 | + if response.IsError() { |
| 115 | + HandleError( |
| 116 | + fmt.Errorf( |
| 117 | + "Error: %s", |
| 118 | + response.String())) |
| 119 | + } |
| 120 | + json.NewDecoder(response.Body).Decode(&indices) |
| 121 | + } |
| 122 | + return indices |
| 123 | +} |
| 124 | + |
| 125 | +var esDeleteIndicesCmd = &cobra.Command{ |
| 126 | + Use: "delete-indices", |
| 127 | + Short: "Delete matching indices from Elasticsearch", |
| 128 | + Long: `Provide an index name to delete from Elasticsearch`, |
| 129 | + Run: func(cmd *cobra.Command, args []string) { |
| 130 | + Logger.Debug("delete-indices called") |
| 131 | + |
| 132 | + var search []string |
| 133 | + if len(args) == 1 { |
| 134 | + search = args |
| 135 | + } else { |
| 136 | + HandleError(errors.New("Provide delete string")) |
| 137 | + } |
| 138 | + Logger.Debugf("Deleting [%s] from elasticsearch", search) |
| 139 | + |
| 140 | + indices := findIndices(search) |
| 141 | + |
| 142 | + for k, v := range indices { |
| 143 | + settings := v.(map[string]interface{})["settings"].(map[string]interface{}) |
| 144 | + index := settings["index"].(map[string]interface{}) |
| 145 | + creationDateMs, err := strconv.ParseInt(index["creation_date"].(string), 10, 64) |
| 146 | + HandleError(err) |
| 147 | + |
| 148 | + Logger.Debugf("key[%s] creationDate[%s]\n", k, index["creation_date"]) |
| 149 | + |
| 150 | + age := time.Now().Sub(time.Unix(0, creationDateMs*int64(time.Millisecond))) |
| 151 | + Logger.Debugf("Age[%s]\n", age) |
| 152 | + if age.Seconds() > float64(esRetentionDays*24.0*60.0*60.0) { |
| 153 | + if esDryRun == false { |
| 154 | + fmt.Printf("Deleting index [%s]\n", k) |
| 155 | + deleteIndex([]string{k}) |
| 156 | + } else { |
| 157 | + fmt.Printf("[%s] would be deleted\n", k) |
| 158 | + } |
| 159 | + } |
| 160 | + } |
| 161 | + |
| 162 | + }, |
| 163 | +} |
| 164 | + |
| 165 | +var esGetIndicesCmd = &cobra.Command{ |
| 166 | + Use: "get-indices", |
| 167 | + Short: "Retrieve list of matching indices from Elasticsearch", |
| 168 | + Long: `Provide an index name to query Elasticsearch`, |
| 169 | + Run: func(cmd *cobra.Command, args []string) { |
| 170 | + Logger.Debug("get-indices called") |
| 171 | + |
| 172 | + var search []string |
| 173 | + if len(args) == 1 { |
| 174 | + search = args |
| 175 | + } else { |
| 176 | + HandleError(errors.New("Provide search string")) |
| 177 | + } |
| 178 | + Logger.Debugf("Searching elasticsearch for [%s]", search) |
| 179 | + |
| 180 | + indices := findIndices(search) |
| 181 | + var out []byte |
| 182 | + var err error |
| 183 | + if esPrettyPrint { |
| 184 | + out, err = json.MarshalIndent(indices, "", " ") |
| 185 | + } else { |
| 186 | + out, err = json.Marshal(indices) |
| 187 | + } |
| 188 | + HandleError(err) |
| 189 | + fmt.Println(string(out)) |
| 190 | + }, |
| 191 | +} |
| 192 | + |
| 193 | +// esCmdPersistentPreRunE checks required persistent tokens for esCmd |
| 194 | +func esCmdPersistentPreRunE(cmd *cobra.Command, args []string) error { |
| 195 | + if err := rootCmdPersistentPreRunE(cmd, args); err != nil { |
| 196 | + return err |
| 197 | + } |
| 198 | + Logger.Debugln("esCmdPersistentPreRunE") |
| 199 | + Logger.Debugf("Using ES URL: {%s}", esURL) |
| 200 | + esURL = viper.GetString("url") |
| 201 | + esUsername = viper.GetString("username") |
| 202 | + esPassword = viper.GetString("password") |
| 203 | + esAPIKey = viper.GetString("api-key") |
| 204 | + |
| 205 | + if esURL == "" { |
| 206 | + return errors.New("${ES_URL} must be set or passed in via --url") |
| 207 | + } |
| 208 | + return nil |
| 209 | +} |
| 210 | + |
| 211 | +// esCmd represents the es command |
| 212 | +var esCmd = &cobra.Command{ |
| 213 | + Use: "es", |
| 214 | + Short: "Elasticsearch Commands", |
| 215 | + Long: `Commands designed to facilitate interactions with Elasticsearch`, |
| 216 | + PersistentPreRunE: esCmdPersistentPreRunE, |
| 217 | + Run: func(cmd *cobra.Command, args []string) { |
| 218 | + cmd.Help() |
| 219 | + }, |
| 220 | +} |
| 221 | + |
| 222 | +func init() { |
| 223 | + rootCmd.AddCommand(esCmd) |
| 224 | + esCmd.AddCommand(esGetIndicesCmd) |
| 225 | + esCmd.AddCommand(esDeleteIndicesCmd) |
| 226 | + |
| 227 | + esCmd.PersistentFlags().StringVarP( |
| 228 | + &esURL, |
| 229 | + "url", |
| 230 | + "", |
| 231 | + "", |
| 232 | + "Elasticsearch URL can alternatively be set using ${ES_URL}") |
| 233 | + viper.BindEnv("url", "ES_URL") |
| 234 | + |
| 235 | + esCmd.PersistentFlags().StringVarP( |
| 236 | + &esVersion, |
| 237 | + "api-version", |
| 238 | + "", |
| 239 | + "", |
| 240 | + "Elasticsearch major version, currently supports v6 and v7 e.g. --api-version v6") |
| 241 | + |
| 242 | + esCmd.PersistentFlags().StringVarP( |
| 243 | + &esUsername, |
| 244 | + "username", |
| 245 | + "", |
| 246 | + "", |
| 247 | + "Elasticsearch username for Basic Auth can alternatively be set using ${ES_USERNAME}") |
| 248 | + viper.BindEnv("username", "ES_USERNAME") |
| 249 | + |
| 250 | + esCmd.PersistentFlags().StringVarP( |
| 251 | + &esPassword, |
| 252 | + "password", |
| 253 | + "", |
| 254 | + "", |
| 255 | + "Elasticsearch password for Basic Auth can alternatively be set using ${ES_PASSWORD}") |
| 256 | + viper.BindEnv("password", "ES_PASSWORD") |
| 257 | + |
| 258 | + esCmd.PersistentFlags().StringVarP( |
| 259 | + &esAPIKey, |
| 260 | + "api-key", |
| 261 | + "", |
| 262 | + "", |
| 263 | + "Elasticsearch Base64 encoded authorization api token - will override Basic Auth can alternatively be set using ${ES_API_KEY}") |
| 264 | + viper.BindEnv("api-key", "ES_API_KEY") |
| 265 | + |
| 266 | + viper.BindPFlags(esCmd.PersistentFlags()) |
| 267 | + |
| 268 | + esGetIndicesCmd.Flags().BoolVarP( |
| 269 | + &esPrettyPrint, |
| 270 | + "pretty-print", |
| 271 | + "", |
| 272 | + false, |
| 273 | + "Pretty print json output") |
| 274 | + |
| 275 | + esDeleteIndicesCmd.Flags().IntVarP( |
| 276 | + &esRetentionDays, |
| 277 | + "retention-days", |
| 278 | + "", |
| 279 | + 0, |
| 280 | + "Days to retain indexes matching delete pattern") |
| 281 | + esDeleteIndicesCmd.Flags().BoolVarP( |
| 282 | + &esDryRun, |
| 283 | + "dry-run", |
| 284 | + "", |
| 285 | + false, |
| 286 | + "Enable dry run to see what indices would be deleted") |
| 287 | + |
| 288 | +} |
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