mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-11-21 14:44:00 +00:00
422 lines
11 KiB
Go
422 lines
11 KiB
Go
package main
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"flag"
|
|
"fmt"
|
|
"io"
|
|
"io/fs"
|
|
"net/http"
|
|
"net/url"
|
|
"os"
|
|
"os/signal"
|
|
"strconv"
|
|
"strings"
|
|
"syscall"
|
|
"time"
|
|
|
|
"github.com/ergochat/readline"
|
|
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/buildinfo"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/envflag"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
|
|
)
|
|
|
|
var (
|
|
datasourceURL = flag.String("datasource.url", "http://localhost:9428/select/logsql/query", "URL for querying VictoriaLogs; "+
|
|
"see https://docs.victoriametrics.com/victorialogs/querying/#querying-logs . See also -tail.url")
|
|
tailURL = flag.String("tail.url", "", "URL for live tailing queries to VictoriaLogs; see https://docs.victoriametrics.com/victorialogs/querying/#live-tailing ."+
|
|
"The url is automatically detected from -datasource.url by replacing /query with /tail at the end if -tail.url is empty")
|
|
historyFile = flag.String("historyFile", "vlogscli-history", "Path to file with command history")
|
|
header = flagutil.NewArrayString("header", "Optional header to pass in request -datasource.url in the form 'HeaderName: value'")
|
|
accountID = flag.Int("accountID", 0, "Account ID to query; see https://docs.victoriametrics.com/victorialogs/#multitenancy")
|
|
projectID = flag.Int("projectID", 0, "Project ID to query; see https://docs.victoriametrics.com/victorialogs/#multitenancy")
|
|
)
|
|
|
|
const (
|
|
firstLinePrompt = ";> "
|
|
nextLinePrompt = ""
|
|
)
|
|
|
|
func main() {
|
|
// Write flags and help message to stdout, since it is easier to grep or pipe.
|
|
flag.CommandLine.SetOutput(os.Stdout)
|
|
flag.Usage = usage
|
|
envflag.Parse()
|
|
buildinfo.Init()
|
|
logger.InitNoLogFlags()
|
|
|
|
hes, err := parseHeaders(*header)
|
|
if err != nil {
|
|
fatalf("cannot parse -header command-line flag: %s", err)
|
|
}
|
|
headers = hes
|
|
|
|
incompleteLine := ""
|
|
cfg := &readline.Config{
|
|
Prompt: firstLinePrompt,
|
|
DisableAutoSaveHistory: true,
|
|
Listener: func(line []rune, pos int, _ rune) ([]rune, int, bool) {
|
|
incompleteLine = string(line)
|
|
return line, pos, false
|
|
},
|
|
}
|
|
rl, err := readline.NewFromConfig(cfg)
|
|
if err != nil {
|
|
fatalf("cannot initialize readline: %s", err)
|
|
}
|
|
|
|
fmt.Fprintf(rl, "sending queries to -datasource.url=%s\n", *datasourceURL)
|
|
fmt.Fprintf(rl, `type ? and press enter to see available commands`+"\n")
|
|
runReadlineLoop(rl, &incompleteLine)
|
|
|
|
if err := rl.Close(); err != nil {
|
|
fatalf("cannot close readline: %s", err)
|
|
}
|
|
|
|
}
|
|
|
|
func runReadlineLoop(rl *readline.Instance, incompleteLine *string) {
|
|
historyLines, err := loadFromHistory(*historyFile)
|
|
if err != nil {
|
|
fatalf("cannot load query history: %s", err)
|
|
}
|
|
for _, line := range historyLines {
|
|
if err := rl.SaveToHistory(line); err != nil {
|
|
fatalf("cannot initialize query history: %s", err)
|
|
}
|
|
}
|
|
|
|
outputMode := outputModeJSONMultiline
|
|
s := ""
|
|
for {
|
|
line, err := rl.ReadLine()
|
|
if err != nil {
|
|
switch err {
|
|
case io.EOF:
|
|
if s != "" {
|
|
// This is non-interactive query execution.
|
|
executeQuery(context.Background(), rl, s, outputMode)
|
|
}
|
|
return
|
|
case readline.ErrInterrupt:
|
|
if s == "" && *incompleteLine == "" {
|
|
fmt.Fprintf(rl, "interrupted\n")
|
|
os.Exit(128 + int(syscall.SIGINT))
|
|
}
|
|
// Default value for Ctrl+C - clear the prompt and store the incompletely entered line into history
|
|
s += *incompleteLine
|
|
historyLines = pushToHistory(rl, historyLines, s)
|
|
s = ""
|
|
rl.SetPrompt(firstLinePrompt)
|
|
continue
|
|
default:
|
|
fatalf("unexpected error in readline: %s", err)
|
|
}
|
|
}
|
|
|
|
s += line
|
|
if s == "" {
|
|
// Skip empty lines
|
|
continue
|
|
}
|
|
|
|
if isQuitCommand(s) {
|
|
fmt.Fprintf(rl, "bye!\n")
|
|
_ = pushToHistory(rl, historyLines, s)
|
|
return
|
|
}
|
|
if isHelpCommand(s) {
|
|
printCommandsHelp(rl)
|
|
historyLines = pushToHistory(rl, historyLines, s)
|
|
s = ""
|
|
continue
|
|
}
|
|
if s == `\s` {
|
|
fmt.Fprintf(rl, "singleline json output mode\n")
|
|
outputMode = outputModeJSONSingleline
|
|
historyLines = pushToHistory(rl, historyLines, s)
|
|
s = ""
|
|
continue
|
|
}
|
|
if s == `\m` {
|
|
fmt.Fprintf(rl, "multiline json output mode\n")
|
|
outputMode = outputModeJSONMultiline
|
|
historyLines = pushToHistory(rl, historyLines, s)
|
|
s = ""
|
|
continue
|
|
}
|
|
if s == `\c` {
|
|
fmt.Fprintf(rl, "compact output mode\n")
|
|
outputMode = outputModeCompact
|
|
historyLines = pushToHistory(rl, historyLines, s)
|
|
s = ""
|
|
continue
|
|
}
|
|
if s == `\logfmt` {
|
|
fmt.Fprintf(rl, "logfmt output mode\n")
|
|
outputMode = outputModeLogfmt
|
|
historyLines = pushToHistory(rl, historyLines, s)
|
|
s = ""
|
|
continue
|
|
}
|
|
if line != "" && !strings.HasSuffix(line, ";") {
|
|
// Assume the query is incomplete and allow the user finishing the query on the next line
|
|
s += "\n"
|
|
rl.SetPrompt(nextLinePrompt)
|
|
continue
|
|
}
|
|
|
|
// Execute the query
|
|
ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt)
|
|
executeQuery(ctx, rl, s, outputMode)
|
|
cancel()
|
|
|
|
historyLines = pushToHistory(rl, historyLines, s)
|
|
s = ""
|
|
rl.SetPrompt(firstLinePrompt)
|
|
}
|
|
}
|
|
|
|
func pushToHistory(rl *readline.Instance, historyLines []string, s string) []string {
|
|
s = strings.TrimSpace(s)
|
|
if len(historyLines) == 0 || historyLines[len(historyLines)-1] != s {
|
|
historyLines = append(historyLines, s)
|
|
if len(historyLines) > 500 {
|
|
historyLines = historyLines[len(historyLines)-500:]
|
|
}
|
|
if err := saveToHistory(*historyFile, historyLines); err != nil {
|
|
fatalf("cannot save query history: %s", err)
|
|
}
|
|
}
|
|
if err := rl.SaveToHistory(s); err != nil {
|
|
fatalf("cannot update query history: %s", err)
|
|
}
|
|
return historyLines
|
|
}
|
|
|
|
func loadFromHistory(filePath string) ([]string, error) {
|
|
data, err := os.ReadFile(filePath)
|
|
if err != nil {
|
|
if errors.Is(err, fs.ErrNotExist) {
|
|
return nil, nil
|
|
}
|
|
return nil, err
|
|
}
|
|
linesQuoted := strings.Split(string(data), "\n")
|
|
lines := make([]string, 0, len(linesQuoted))
|
|
i := 0
|
|
for _, lineQuoted := range linesQuoted {
|
|
i++
|
|
if lineQuoted == "" {
|
|
continue
|
|
}
|
|
line, err := strconv.Unquote(lineQuoted)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot parse line #%d at %s: %w; line: [%s]", i, filePath, err, line)
|
|
}
|
|
lines = append(lines, line)
|
|
}
|
|
return lines, nil
|
|
}
|
|
|
|
func saveToHistory(filePath string, lines []string) error {
|
|
linesQuoted := make([]string, len(lines))
|
|
for i, line := range lines {
|
|
lineQuoted := strconv.Quote(line)
|
|
linesQuoted[i] = lineQuoted
|
|
}
|
|
data := strings.Join(linesQuoted, "\n")
|
|
return os.WriteFile(filePath, []byte(data), 0600)
|
|
}
|
|
|
|
func isQuitCommand(s string) bool {
|
|
switch s {
|
|
case `\q`, "q", "quit", "exit":
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
func isHelpCommand(s string) bool {
|
|
switch s {
|
|
case `\h`, "h", "help", "?":
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
func printCommandsHelp(w io.Writer) {
|
|
fmt.Fprintf(w, "%s", `Available commands:
|
|
\q - quit
|
|
\h - show this help
|
|
\s - singleline json output mode
|
|
\m - multiline json output mode
|
|
\c - compact output
|
|
\logfmt - logfmt output mode
|
|
\tail <query> - live tail <query> results
|
|
|
|
See https://docs.victoriametrics.com/victorialogs/querying/vlogscli/ for more details
|
|
`)
|
|
}
|
|
|
|
func executeQuery(ctx context.Context, output io.Writer, qStr string, outputMode outputMode) {
|
|
if strings.HasPrefix(qStr, `\tail `) {
|
|
tailQuery(ctx, output, qStr, outputMode)
|
|
return
|
|
}
|
|
|
|
respBody := getQueryResponse(ctx, output, qStr, outputMode, *datasourceURL)
|
|
if respBody == nil {
|
|
return
|
|
}
|
|
defer func() {
|
|
_ = respBody.Close()
|
|
}()
|
|
|
|
if err := readWithLess(respBody); err != nil {
|
|
fmt.Fprintf(output, "error when reading query response: %s\n", err)
|
|
return
|
|
}
|
|
}
|
|
|
|
func tailQuery(ctx context.Context, output io.Writer, qStr string, outputMode outputMode) {
|
|
qStr = strings.TrimPrefix(qStr, `\tail `)
|
|
qURL, err := getTailURL()
|
|
if err != nil {
|
|
fmt.Fprintf(output, "%s\n", err)
|
|
return
|
|
}
|
|
|
|
respBody := getQueryResponse(ctx, output, qStr, outputMode, qURL)
|
|
if respBody == nil {
|
|
return
|
|
}
|
|
defer func() {
|
|
_ = respBody.Close()
|
|
}()
|
|
|
|
if _, err := io.Copy(output, respBody); err != nil {
|
|
if !errors.Is(err, context.Canceled) && !isErrPipe(err) {
|
|
fmt.Fprintf(output, "error when live tailing query response: %s\n", err)
|
|
}
|
|
fmt.Fprintf(output, "\n")
|
|
return
|
|
}
|
|
}
|
|
|
|
func getTailURL() (string, error) {
|
|
if *tailURL != "" {
|
|
return *tailURL, nil
|
|
}
|
|
|
|
u, err := url.Parse(*datasourceURL)
|
|
if err != nil {
|
|
return "", fmt.Errorf("cannot parse -datasource.url=%q: %w", *datasourceURL, err)
|
|
}
|
|
if !strings.HasSuffix(u.Path, "/query") {
|
|
return "", fmt.Errorf("cannot find /query suffix in -datasource.url=%q", *datasourceURL)
|
|
}
|
|
u.Path = u.Path[:len(u.Path)-len("/query")] + "/tail"
|
|
return u.String(), nil
|
|
}
|
|
|
|
func getQueryResponse(ctx context.Context, output io.Writer, qStr string, outputMode outputMode, qURL string) io.ReadCloser {
|
|
// Parse the query and convert it to canonical view.
|
|
qStr = strings.TrimSuffix(qStr, ";")
|
|
q, err := logstorage.ParseQuery(qStr)
|
|
if err != nil {
|
|
fmt.Fprintf(output, "cannot parse query: %s\n", err)
|
|
return nil
|
|
}
|
|
qStr = q.String()
|
|
fmt.Fprintf(output, "executing [%s]...", qStr)
|
|
|
|
// Prepare HTTP request for qURL
|
|
args := make(url.Values)
|
|
args.Set("query", qStr)
|
|
data := strings.NewReader(args.Encode())
|
|
|
|
req, err := http.NewRequestWithContext(ctx, "POST", qURL, data)
|
|
if err != nil {
|
|
panic(fmt.Errorf("BUG: cannot prepare request to server: %w", err))
|
|
}
|
|
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
|
|
for _, h := range headers {
|
|
req.Header.Set(h.Name, h.Value)
|
|
}
|
|
req.Header.Set("AccountID", strconv.Itoa(*accountID))
|
|
req.Header.Set("ProjectID", strconv.Itoa(*projectID))
|
|
|
|
// Execute HTTP request at qURL
|
|
startTime := time.Now()
|
|
resp, err := httpClient.Do(req)
|
|
queryDuration := time.Since(startTime)
|
|
fmt.Fprintf(output, "; duration: %.3fs\n", queryDuration.Seconds())
|
|
if err != nil {
|
|
if errors.Is(err, context.Canceled) {
|
|
fmt.Fprintf(output, "\n")
|
|
} else {
|
|
fmt.Fprintf(output, "cannot execute query: %s\n", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Verify response code
|
|
if resp.StatusCode != http.StatusOK {
|
|
body, err := io.ReadAll(resp.Body)
|
|
if err != nil {
|
|
body = []byte(fmt.Sprintf("cannot read response body: %s", err))
|
|
}
|
|
fmt.Fprintf(output, "unexpected status code: %d; response body:\n%s\n", resp.StatusCode, body)
|
|
return nil
|
|
}
|
|
|
|
// Prettify the response body
|
|
jp := newJSONPrettifier(resp.Body, outputMode)
|
|
|
|
return jp
|
|
}
|
|
|
|
var httpClient = &http.Client{}
|
|
|
|
var headers []headerEntry
|
|
|
|
type headerEntry struct {
|
|
Name string
|
|
Value string
|
|
}
|
|
|
|
func parseHeaders(a []string) ([]headerEntry, error) {
|
|
hes := make([]headerEntry, len(a))
|
|
for i, s := range a {
|
|
a := strings.SplitN(s, ":", 2)
|
|
if len(a) != 2 {
|
|
return nil, fmt.Errorf("cannot parse header=%q; it must contain at least one ':'; for example, 'Cookie: foo'", s)
|
|
}
|
|
hes[i] = headerEntry{
|
|
Name: strings.TrimSpace(a[0]),
|
|
Value: strings.TrimSpace(a[1]),
|
|
}
|
|
}
|
|
return hes, nil
|
|
}
|
|
|
|
func fatalf(format string, args ...any) {
|
|
fmt.Fprintf(os.Stderr, format+"\n", args...)
|
|
os.Exit(1)
|
|
}
|
|
|
|
func usage() {
|
|
const s = `
|
|
vlogscli is a command-line tool for querying VictoriaLogs.
|
|
|
|
See the docs at https://docs.victoriametrics.com/victorialogs/querying/vlogscli/
|
|
`
|
|
flagutil.Usage(s)
|
|
}
|