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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
// vespa query command
// author: bratseth
package cmd
import (
"fmt"
"io"
"log"
"net/http"
"net/url"
"strings"
"time"
"github.com/fatih/color"
"github.com/spf13/cobra"
"github.com/vespa-engine/vespa/client/go/internal/curl"
"github.com/vespa-engine/vespa/client/go/internal/util"
"github.com/vespa-engine/vespa/client/go/internal/vespa"
)
func newQueryCmd(cli *CLI) *cobra.Command {
var (
printCurl bool
queryTimeoutSecs int
waitSecs int
)
cmd := &cobra.Command{
Use: "query query-parameters",
Short: "Issue a query to Vespa",
Example: `$ vespa query "yql=select * from music where album contains 'head'" hits=5`,
Long: `Issue a query to Vespa.
Any parameter from https://docs.vespa.ai/en/reference/query-api-reference.html
can be set by the syntax [parameter-name]=[value].`,
// TODO: Support referencing a query json file
DisableAutoGenTag: true,
SilenceUsage: true,
Args: cobra.MinimumNArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
return query(cli, args, queryTimeoutSecs, waitSecs, printCurl)
},
}
cmd.PersistentFlags().BoolVarP(&printCurl, "verbose", "v", false, "Print the equivalent curl command for the query")
cmd.Flags().IntVarP(&queryTimeoutSecs, "timeout", "T", 10, "Timeout for the query in seconds")
cli.bindWaitFlag(cmd, 0, &waitSecs)
return cmd
}
func printCurl(stderr io.Writer, url string, service *vespa.Service) error {
cmd, err := curl.RawArgs(url)
if err != nil {
return err
}
cmd.Certificate = service.TLSOptions.CertificateFile
cmd.PrivateKey = service.TLSOptions.PrivateKeyFile
_, err = io.WriteString(stderr, cmd.String()+"\n")
return err
}
func query(cli *CLI, arguments []string, timeoutSecs, waitSecs int, curl bool) error {
target, err := cli.target(targetOptions{})
if err != nil {
return err
}
waiter := cli.waiter(time.Duration(waitSecs) * time.Second)
service, err := waiter.Service(target, cli.config.cluster())
if err != nil {
return err
}
url, _ := url.Parse(service.BaseURL + "/search/")
urlQuery := url.Query()
for i := 0; i < len(arguments); i++ {
key, value := splitArg(arguments[i])
urlQuery.Set(key, value)
}
queryTimeout := urlQuery.Get("timeout")
if queryTimeout == "" {
// No timeout set by user, use the timeout option
queryTimeout = fmt.Sprintf("%ds", timeoutSecs)
urlQuery.Set("timeout", queryTimeout)
}
url.RawQuery = urlQuery.Encode()
deadline, err := time.ParseDuration(queryTimeout)
if err != nil {
return fmt.Errorf("invalid query timeout: %w", err)
}
if curl {
if err := printCurl(cli.Stderr, url.String(), service); err != nil {
return err
}
}
response, err := service.Do(&http.Request{URL: url}, deadline+time.Second) // Slightly longer than query timeout
if err != nil {
return fmt.Errorf("request failed: %w", err)
}
defer response.Body.Close()
if response.StatusCode == 200 {
log.Print(util.ReaderToJSON(response.Body))
} else if response.StatusCode/100 == 4 {
return fmt.Errorf("invalid query: %s\n%s", response.Status, util.ReaderToJSON(response.Body))
} else {
return fmt.Errorf("%s from container at %s\n%s", response.Status, color.CyanString(url.Host), util.ReaderToJSON(response.Body))
}
return nil
}
func splitArg(argument string) (string, string) {
parts := strings.SplitN(argument, "=", 2)
if len(parts) < 2 {
return "yql", parts[0]
}
if strings.HasPrefix(strings.ToLower(parts[0]), "select ") {
// A query containing '='
return "yql", argument
}
return parts[0], parts[1]
}
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