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Merge pull request #31 from clidey/hk/feature/elasticsearch
[Feature] Add support for Elastic Search
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -8,6 +8,7 @@ enum DatabaseType { | |
| Sqlite3, | ||
| MongoDB, | ||
| Redis, | ||
| ElasticSearch, | ||
| } | ||
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| type Column { | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| package elasticsearch | ||
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| import ( | ||
| "fmt" | ||
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| "github.com/clidey/whodb/core/src/common" | ||
| "github.com/clidey/whodb/core/src/engine" | ||
| "github.com/elastic/go-elasticsearch/v8" | ||
| ) | ||
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| func DB(config *engine.PluginConfig) (*elasticsearch.Client, error) { | ||
| var addresses []string | ||
| port := common.GetRecordValueOrDefault(config.Credentials.Advanced, "Port", "9200") | ||
| sslMode := common.GetRecordValueOrDefault(config.Credentials.Advanced, "SSL Mode", "disable") | ||
| if sslMode == "enable" { | ||
| addresses = []string{ | ||
| fmt.Sprintf("https://%s:%s", config.Credentials.Hostname, port), | ||
| } | ||
| } else { | ||
| addresses = []string{ | ||
| fmt.Sprintf("http://%s:%s", config.Credentials.Hostname, port), | ||
| } | ||
| } | ||
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| cfg := elasticsearch.Config{ | ||
| Addresses: addresses, | ||
| Username: config.Credentials.Username, | ||
| Password: config.Credentials.Password, | ||
| } | ||
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| client, err := elasticsearch.NewClient(cfg) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
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| res, err := client.Info() | ||
| if err != nil || res.IsError() { | ||
| return nil, fmt.Errorf("error pinging Elasticsearch: %v", err) | ||
| } | ||
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| return client, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,159 @@ | ||
| package elasticsearch | ||
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| import ( | ||
| "bytes" | ||
| "context" | ||
| "encoding/json" | ||
| "errors" | ||
| "fmt" | ||
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| "github.com/clidey/whodb/core/src/engine" | ||
| ) | ||
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| type ElasticSearchPlugin struct{} | ||
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| func (p *ElasticSearchPlugin) IsAvailable(config *engine.PluginConfig) bool { | ||
| client, err := DB(config) | ||
| if err != nil { | ||
| return false | ||
| } | ||
| res, err := client.Info() | ||
| if err != nil || res.IsError() { | ||
| return false | ||
| } | ||
| return true | ||
| } | ||
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| func (p *ElasticSearchPlugin) GetDatabases() ([]string, error) { | ||
| return nil, errors.ErrUnsupported | ||
| } | ||
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| func (p *ElasticSearchPlugin) GetSchema(config *engine.PluginConfig) ([]string, error) { | ||
| return nil, errors.ErrUnsupported | ||
| } | ||
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| func (p *ElasticSearchPlugin) GetStorageUnits(config *engine.PluginConfig, database string) ([]engine.StorageUnit, error) { | ||
| client, err := DB(config) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| res, err := client.Indices.Stats() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| defer res.Body.Close() | ||
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| if res.IsError() { | ||
| return nil, fmt.Errorf("error getting stats for indices: %s", res.String()) | ||
| } | ||
|
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| var stats map[string]interface{} | ||
| if err := json.NewDecoder(res.Body).Decode(&stats); err != nil { | ||
| return nil, err | ||
| } | ||
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| indicesStats := stats["indices"].(map[string]interface{}) | ||
| storageUnits := make([]engine.StorageUnit, 0, len(indicesStats)) | ||
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| for indexName, indexStatsInterface := range indicesStats { | ||
| indexStats := indexStatsInterface.(map[string]interface{}) | ||
| primaries := indexStats["primaries"].(map[string]interface{}) | ||
| docs := primaries["docs"].(map[string]interface{}) | ||
| store := primaries["store"].(map[string]interface{}) | ||
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| storageUnit := engine.StorageUnit{ | ||
| Name: indexName, | ||
| Attributes: []engine.Record{ | ||
| {Key: "Storage Size", Value: fmt.Sprintf("%v", store["size_in_bytes"])}, | ||
| {Key: "Count", Value: fmt.Sprintf("%v", docs["count"])}, | ||
| }, | ||
| } | ||
| storageUnits = append(storageUnits, storageUnit) | ||
| } | ||
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| return storageUnits, nil | ||
| } | ||
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| func (p *ElasticSearchPlugin) GetRows(config *engine.PluginConfig, database, collection, filter string, pageSize, pageOffset int) (*engine.GetRowsResult, error) { | ||
| client, err := DB(config) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| var elasticSearchConditions map[string]interface{} | ||
| if len(filter) > 0 { | ||
| if err := json.Unmarshal([]byte(filter), &elasticSearchConditions); err != nil { | ||
| return nil, fmt.Errorf("invalid filter format: %v", err) | ||
| } | ||
| } | ||
|
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| query := map[string]interface{}{ | ||
| "from": pageOffset, | ||
| "size": pageSize, | ||
| } | ||
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| for key, value := range elasticSearchConditions { | ||
| query[key] = value | ||
| } | ||
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| var buf bytes.Buffer | ||
| if err := json.NewEncoder(&buf).Encode(query); err != nil { | ||
| return nil, err | ||
| } | ||
|
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| res, err := client.Search( | ||
| client.Search.WithContext(context.Background()), | ||
| client.Search.WithIndex(collection), | ||
| client.Search.WithBody(&buf), | ||
| client.Search.WithTrackTotalHits(true), | ||
| ) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| defer res.Body.Close() | ||
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| if res.IsError() { | ||
| return nil, fmt.Errorf("error searching documents: %s", res.String()) | ||
| } | ||
|
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| var searchResult map[string]interface{} | ||
| if err := json.NewDecoder(res.Body).Decode(&searchResult); err != nil { | ||
| return nil, err | ||
| } | ||
|
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| hits := searchResult["hits"].(map[string]interface{})["hits"].([]interface{}) | ||
| result := &engine.GetRowsResult{ | ||
| Columns: []engine.Column{ | ||
| {Name: "document", Type: "Document"}, | ||
| }, | ||
| Rows: [][]string{}, | ||
| } | ||
|
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| for _, hit := range hits { | ||
| hitMap := hit.(map[string]interface{}) | ||
| source := hitMap["_source"] | ||
| id := hitMap["_id"] | ||
| document := map[string]interface{}{} | ||
| document["_id"] = id | ||
| document["source"] = source | ||
| jsonBytes, err := json.Marshal(document) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| result.Rows = append(result.Rows, []string{string(jsonBytes)}) | ||
| } | ||
|
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| return result, nil | ||
| } | ||
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| func (p *ElasticSearchPlugin) RawExecute(config *engine.PluginConfig, query string) (*engine.GetRowsResult, error) { | ||
| return nil, errors.New("unsupported operation") | ||
| } | ||
|
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| func NewElasticSearchPlugin() *engine.Plugin { | ||
| return &engine.Plugin{ | ||
| Type: engine.DatabaseType_ElasticSearch, | ||
| PluginFunctions: &ElasticSearchPlugin{}, | ||
| } | ||
| } |
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