forked from parse-community/parse-cli
/
logs.go
117 lines (103 loc) · 2.43 KB
/
logs.go
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package parsecmd
import (
"encoding/json"
"fmt"
"net/url"
"strings"
"time"
"github.com/back4app/parse-cli/parsecli"
"github.com/facebookgo/stackerr"
"github.com/spf13/cobra"
)
const logFollowSleepDuration = time.Second
type parseTime struct {
Type string `json:"__type"`
ISO string `json:"iso"`
}
type logResponse struct {
Timestamp parseTime `json:"timestamp"`
Message string `json:"message"`
}
type logsCmd struct {
num uint
follow bool
level string
}
func (l *logsCmd) run(e *parsecli.Env, c *parsecli.Context) error {
level := strings.ToUpper(l.level)
if level != "INFO" && level != "ERROR" {
return stackerr.Newf("invalid level: %q", l.level)
}
l.level = level
numIsSet := true
if l.num == 0 {
numIsSet = false
l.num = 10
}
lastTime, err := l.round(e, c, nil)
if err != nil {
return err
}
if !l.follow {
return nil
}
if !numIsSet {
l.num = 100 // force num to 100 for follow
}
ticker := e.Clock.Ticker(logFollowSleepDuration)
defer ticker.Stop()
for range ticker.C {
lastTime, err = l.round(e, c, lastTime)
if err != nil {
return err
}
}
return nil
}
func (l *logsCmd) round(e *parsecli.Env, c *parsecli.Context, startTime *parseTime) (*parseTime, error) {
v := make(url.Values)
v.Set("n", fmt.Sprint(l.num))
v.Set("level", l.level)
if startTime != nil {
b, err := json.Marshal(startTime)
if err != nil {
return nil, stackerr.Wrap(err)
}
v.Set("startTime", string(b))
}
u := &url.URL{
Path: "scriptlog",
RawQuery: v.Encode(),
}
var rows []logResponse
if _, err := e.ParseAPIClient.Get(u, &rows); err != nil {
return nil, stackerr.Wrap(err)
}
// logs come back in reverse
for i := len(rows) - 1; i >= 0; i-- {
fmt.Fprintln(e.Out, rows[i].Message)
}
if len(rows) > 0 {
return &rows[0].Timestamp, nil
}
return startTime, nil
}
func NewLogsCmd(e *parsecli.Env) *cobra.Command {
l := logsCmd{
level: "INFO",
}
cmd := &cobra.Command{
Use: "logs",
Short: "Prints out recent log messages",
Long: "Prints out recent log messages.",
Run: parsecli.RunWithClient(e, l.run),
Aliases: []string{"log"},
}
cmd.Flags().UintVarP(&l.num, "num", "n", l.num,
"The number of the messages to display")
cmd.Flags().BoolVarP(&l.follow, "follow", "f", l.follow,
"Emulates tail -f and streams new messages from the server")
cmd.Flags().StringVarP(&l.level, "level", "l", l.level,
"The log level to restrict to. Can be 'INFO' or 'ERROR'.")
return cmd
}