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main.go
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main.go
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// Copyright (C) 2022 Sneller, Inc.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"encoding/json"
"fmt"
"os"
elastic_proxy "github.com/SnellerInc/sneller/elasticproxy/elastic-proxy"
)
func main() {
if len(os.Args) < 2 {
fmt.Fprintln(os.Stderr, "usage: elastic2sql <table>")
os.Exit(1)
}
table := os.Args[1]
var ej elastic_proxy.ElasticJSON
if err := json.NewDecoder(os.Stdin).Decode(&ej); err != nil {
fmt.Fprintf(os.Stderr, "Query parsing error: %v\n", err)
os.Exit(1)
}
qc := elastic_proxy.QueryContext{
TableSources: []elastic_proxy.TableSource{
{Table: table},
},
IgnoreTotalHits: false,
}
sqlExpr, err := ej.SQL(&qc)
if err != nil {
fmt.Fprintf(os.Stderr, "SQL translation error: %v\n", err)
os.Exit(1)
}
fmt.Println(elastic_proxy.PrintExprPretty(sqlExpr))
}