/
logs.go
130 lines (111 loc) · 3.09 KB
/
logs.go
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package dokku
import (
"bufio"
"fmt"
"io"
"log"
"strings"
)
type logsManager interface {
SetEventLoggingEnabled(enabled bool) error
GetEventLogs() (string, error)
ListLoggedEvents() ([]string, error)
TailAppLogs(appName string) (io.Reader, error)
GetAppLogs(string) (string, error)
GetNAppLogs(appName string, numLines int) (string, error)
GetAppProcessLogs(appName, process string) (string, error)
GetAppFailedDeployLogs(appName string) (string, error)
GetAllFailedDeployLogs() (string, error)
}
const (
disabledEventLoggerMsg = "Disabling dokku events logger"
enabledEventLoggerMsg = "Enabling dokku events logger"
)
const (
appLogsCmd = "logs %s --quiet"
appNLogsCmd = "logs %s -n %d --quiet"
appTailLogsCmd = "logs %s --tail --quiet"
appLogsProcessCmd = "logs %s --quiet --ps %s"
appFailedDeployLogsCmd = "logs:failed %s"
allFailedDeployLogsCmd = "logs:failed --all"
eventsCmd = "events"
eventsListCmd = "events:list --quiet"
eventsOnCmd = "events:on"
eventsOffCmd = "events:off"
)
func (c *BaseClient) TailAppLogs(appName string) (io.Reader, error) {
cmd := fmt.Sprintf(appTailLogsCmd, appName)
stream, err := c.ExecStreaming(cmd)
if err != nil {
return nil, err
}
pr, pw := io.Pipe()
go func() {
errBuf := bufio.NewReader(stream.Stderr)
outBuf := bufio.NewReader(stream.Stdout)
for {
line, _, err := outBuf.ReadLine()
if err != nil {
_ = pw.CloseWithError(err)
}
if errBuf.Buffered() > 0 {
stderr, _, err := errBuf.ReadLine()
if err != nil {
log.Printf("error while reading stderr: %s", err.Error())
}
_ = pw.CloseWithError(fmt.Errorf("stderr: %s", stderr))
}
_, err = pw.Write(line)
if err != nil {
_ = pw.CloseWithError(err)
}
}
}()
return pr, nil
}
func (c *BaseClient) GetNAppLogs(appName string, numLines int) (string, error) {
cmd := fmt.Sprintf(appNLogsCmd, appName, numLines)
return c.Exec(cmd)
}
func (c *BaseClient) GetAppLogs(appName string) (string, error) {
return c.GetNAppLogs(appName, 50)
}
func (c *BaseClient) GetAppProcessLogs(appName, process string) (string, error) {
cmd := fmt.Sprintf(appLogsProcessCmd, appName, process)
return c.Exec(cmd)
}
func (c *BaseClient) GetAppFailedDeployLogs(appName string) (string, error) {
cmd := fmt.Sprintf(appFailedDeployLogsCmd, appName)
return c.Exec(cmd)
}
func (c *BaseClient) GetAllFailedDeployLogs() (string, error) {
return c.Exec(allFailedDeployLogsCmd)
}
func (c *BaseClient) SetEventLoggingEnabled(enabled bool) error {
var err error
var output string
if !enabled {
output, err = c.Exec(eventsOffCmd)
if output != disabledEventLoggerMsg {
return UnexpectedMessageError
}
} else {
output, err = c.Exec(eventsOnCmd)
if output != enabledEventLoggerMsg {
return UnexpectedMessageError
}
}
return err
}
func (c *BaseClient) GetEventLogs() (string, error) {
return c.Exec(eventsCmd)
}
func (c *BaseClient) ListLoggedEvents() ([]string, error) {
var events []string
sEvents, err := c.Exec(eventsListCmd)
if err != nil {
return events, err
}
events = strings.Split(sEvents, "\n")
return events, nil
}