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package clients
import (
"fmt"
"strings"
"time"
"github.com/mimecast/dtail/internal/color"
"github.com/mimecast/dtail/internal/config"
"github.com/mimecast/dtail/internal/mapr"
serverHandlers "github.com/mimecast/dtail/internal/server/handlers"
sshserver "github.com/mimecast/dtail/internal/ssh/server"
user "github.com/mimecast/dtail/internal/user/server"
)
type clientRuntimeBoundary struct {
sshPort int
sshConnectTimeout time.Duration
interruptPause time.Duration
serverCfg *config.ServerConfig
output *clientOutputFormatter
}
func newClientRuntimeBoundary(cfg config.RuntimeConfig) *clientRuntimeBoundary {
sshPort := 2222
sshConnectTimeout := 2 * time.Second
if cfg.Common != nil {
if cfg.Common.SSHPort > 0 {
sshPort = cfg.Common.SSHPort
}
if cfg.Common.SSHConnectTimeoutMs > 0 {
sshConnectTimeout = time.Duration(cfg.Common.SSHConnectTimeoutMs) * time.Millisecond
}
}
return &clientRuntimeBoundary{
sshPort: sshPort,
sshConnectTimeout: sshConnectTimeout,
interruptPause: time.Second * time.Duration(config.InterruptTimeoutS),
serverCfg: cfg.Server,
output: newClientOutputFormatter(cfg.Client),
}
}
func (r *clientRuntimeBoundary) SSHPort() int {
return r.sshPort
}
func (r *clientRuntimeBoundary) SSHConnectTimeout() time.Duration {
return r.sshConnectTimeout
}
func (r *clientRuntimeBoundary) InterruptPause() time.Duration {
if r == nil || r.interruptPause <= 0 {
return time.Second * time.Duration(config.InterruptTimeoutS)
}
return r.interruptPause
}
func (r *clientRuntimeBoundary) NewServerlessHandler(userName string) (serverHandlers.Handler, error) {
var permissionLookup user.PermissionLookup
if r.serverCfg != nil {
permissionLookup = r.serverCfg.UserPermissions
}
serverUser, err := user.New(userName, "local(serverless)", permissionLookup)
if err != nil {
return nil, err
}
switch userName {
case config.HealthUser:
return serverHandlers.NewHealthHandler(serverUser), nil
default:
if r.serverCfg == nil {
return nil, fmt.Errorf("missing serverless server config")
}
return serverHandlers.NewServerHandler(
serverUser,
make(chan struct{}, positiveOrDefault(r.serverCfg.MaxConcurrentCats, 2)),
make(chan struct{}, positiveOrDefault(r.serverCfg.MaxConcurrentTails, 50)),
r.serverCfg,
sshserver.AuthKeys(),
), nil
}
}
func positiveOrDefault(value, fallback int) int {
if value <= 0 {
return fallback
}
return value
}
type interruptMessageFormatter interface {
FormatInterruptMessage(index int, message string) string
}
type clientOutputFormatter struct {
interruptEnabled bool
interruptStyle textStyle
rawQueryEnabled bool
rawQueryStyle textStyle
maprRenderer mapr.ResultRenderer
}
func newClientOutputFormatter(clientCfg *config.ClientConfig) *clientOutputFormatter {
formatter := &clientOutputFormatter{
maprRenderer: mapr.PlainResultRenderer(),
}
if clientCfg == nil || !clientCfg.TermColorsEnable {
return formatter
}
formatter.interruptEnabled = true
formatter.rawQueryEnabled = true
formatter.interruptStyle = textStyle{
fg: clientCfg.TermColors.Client.ClientFg,
bg: clientCfg.TermColors.Client.ClientBg,
attr: clientCfg.TermColors.Client.ClientAttr,
}
formatter.rawQueryStyle = textStyle{
fg: clientCfg.TermColors.MaprTable.RawQueryFg,
bg: clientCfg.TermColors.MaprTable.RawQueryBg,
attr: clientCfg.TermColors.MaprTable.RawQueryAttr,
}
formatter.maprRenderer = maprTerminalRenderer{
header: textStyle{
fg: clientCfg.TermColors.MaprTable.HeaderFg,
bg: clientCfg.TermColors.MaprTable.HeaderBg,
attr: clientCfg.TermColors.MaprTable.HeaderAttr,
},
headerDelimiter: textStyle{
fg: clientCfg.TermColors.MaprTable.HeaderDelimiterFg,
bg: clientCfg.TermColors.MaprTable.HeaderDelimiterBg,
attr: clientCfg.TermColors.MaprTable.HeaderDelimiterAttr,
},
headerSortAttr: clientCfg.TermColors.MaprTable.HeaderSortKeyAttr,
headerGroupAttr: clientCfg.TermColors.MaprTable.HeaderGroupKeyAttr,
data: textStyle{
fg: clientCfg.TermColors.MaprTable.DataFg,
bg: clientCfg.TermColors.MaprTable.DataBg,
attr: clientCfg.TermColors.MaprTable.DataAttr,
},
dataDelimiter: textStyle{
fg: clientCfg.TermColors.MaprTable.DelimiterFg,
bg: clientCfg.TermColors.MaprTable.DelimiterBg,
attr: clientCfg.TermColors.MaprTable.DelimiterAttr,
},
}
return formatter
}
func (f *clientOutputFormatter) FormatInterruptMessage(index int, message string) string {
if index > 0 && f.interruptEnabled {
return color.PaintStrWithAttr(message, f.interruptStyle.fg, f.interruptStyle.bg, f.interruptStyle.attr)
}
return " " + message
}
func (f *clientOutputFormatter) PaintMaprRawQuery(rawQuery string) string {
if !f.rawQueryEnabled {
return rawQuery
}
return color.PaintStrWithAttr(rawQuery, f.rawQueryStyle.fg, f.rawQueryStyle.bg, f.rawQueryStyle.attr)
}
func (f *clientOutputFormatter) MaprResultRenderer() mapr.ResultRenderer {
if f == nil || f.maprRenderer == nil {
return mapr.PlainResultRenderer()
}
return f.maprRenderer
}
type textStyle struct {
fg color.FgColor
bg color.BgColor
attr color.Attribute
}
type maprTerminalRenderer struct {
header textStyle
headerDelimiter textStyle
headerSortAttr color.Attribute
headerGroupAttr color.Attribute
data textStyle
dataDelimiter textStyle
}
func (r maprTerminalRenderer) WriteHeaderEntry(sb *strings.Builder, text string, isSortKey, isGroupKey bool) {
attrs := []color.Attribute{r.header.attr}
if isSortKey {
attrs = append(attrs, r.headerSortAttr)
}
if isGroupKey {
attrs = append(attrs, r.headerGroupAttr)
}
color.PaintWithAttrs(sb, text, r.header.fg, r.header.bg, attrs)
}
func (r maprTerminalRenderer) WriteHeaderDelimiter(sb *strings.Builder, text string) {
color.PaintWithAttr(sb, text, r.headerDelimiter.fg, r.headerDelimiter.bg, r.headerDelimiter.attr)
}
func (r maprTerminalRenderer) WriteDataEntry(sb *strings.Builder, text string) {
color.PaintWithAttr(sb, text, r.data.fg, r.data.bg, r.data.attr)
}
func (r maprTerminalRenderer) WriteDataDelimiter(sb *strings.Builder, text string) {
color.PaintWithAttr(sb, text, r.dataDelimiter.fg, r.dataDelimiter.bg, r.dataDelimiter.attr)
}
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