Michael McGuinness
63 lines
1.3 KiB
Go
63 lines
1.3 KiB
Go
package jsonextractor
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import (
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"context"
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"encoding/json"
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"fmt"
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"queryorchestration/internal/database"
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"queryorchestration/internal/database/repository"
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queryprocessor "queryorchestration/internal/queryProcessor"
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"queryorchestration/internal/result"
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"github.com/tidwall/gjson"
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)
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type Extractor struct {
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db *repository.Queries
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}
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type Config struct {
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Path string `json:"path"`
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}
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func NewExtractor(db *repository.Queries) Extractor {
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return Extractor{db}
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}
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func (e Extractor) Process(ctx context.Context, query queryprocessor.Query, values *[]result.Value) (string, error) {
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if len(*values) != 1 {
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return "", fmt.Errorf("JSON Extraction requires 1 result")
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}
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value, err := (*values)[0].GetValue(ctx)
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if err != nil {
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return "", err
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}
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byteConfig, err := e.db.GetQueryConfig(ctx, repository.GetQueryConfigParams{
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Queryid: database.MustToDBUUID(query.ID),
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Addedversion: query.Version,
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})
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if err != nil {
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return "", err
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}
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var config Config
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err = json.Unmarshal(byteConfig.Config, &config)
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if err != nil {
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return "", err
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}
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return e.extract(value, config.Path)
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}
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func (e *Extractor) extract(jsonString string, path string) (string, error) {
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value := gjson.Get(jsonString, path)
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if !value.Exists() {
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return "", fmt.Errorf("JSON path does not exist: %s", path)
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}
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return value.String(), nil
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}
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