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config.go
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config.go
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package tenuki
import (
"log"
"net/http"
"os"
"strconv"
"strings"
"sync"
"github.com/podhmo/tenuki/capture"
)
var (
CaptureEnabledDefault bool = true
CaptureWriteFileBaseDir string = ""
CaptureCountEnabledDefault bool = false
DefaultLayout *capture.Layout
)
func init() {
if ok, _ := strconv.ParseBool(os.Getenv("NOCAPTURE")); ok {
log.Println("CAPTURE_DISABLED is true, so deactivate tenuki.capture function")
CaptureEnabledDefault = false
}
if ok, _ := strconv.ParseBool(os.Getenv("CAPTURE_DISABLED")); ok {
log.Println("CAPTURE_DISABLED is true, so deactivate tenuki.capture function")
CaptureEnabledDefault = false
}
if filename := os.Getenv("CAPTURE_WRITEFILE"); filename != "" {
log.Println("CAPTURE_WRITEFILE is set, so activate the function writing capture output to files")
CaptureWriteFileBaseDir = filename
}
if layout := os.Getenv("CAPTURE_LAYOUT"); layout != "" {
switch strings.ToLower(layout) {
case "text":
DefaultLayout = capture.TextLayout
case "json":
DefaultLayout = capture.JSONLayout
case "openapi":
DefaultLayout = capture.OpenAPILayout
default:
log.Printf("layout=%q is not found, use text layout. (availables: text, json, openapi)", layout)
DefaultLayout = capture.TextLayout
}
}
}
type Config struct {
captureEnabled bool
disableCount bool
writeFileBaseDir string
layout *capture.Layout
printer printer
}
type printer interface {
Printf(fmt string, args ...interface{})
}
func DefaultConfig(options ...func(*Config)) *Config {
c := &Config{
layout: DefaultLayout,
captureEnabled: CaptureEnabledDefault,
writeFileBaseDir: CaptureWriteFileBaseDir,
printer: log.New(os.Stderr, "tenuki", 0),
}
for _, opt := range options {
opt(c)
}
return c
}
func WithoutCapture() func(*Config) {
return func(c *Config) {
c.captureEnabled = false
}
}
func WithWriteFile(basedir string) func(*Config) {
return func(c *Config) {
c.writeFileBaseDir = basedir
}
}
func WithLayout(layout *capture.Layout) func(*Config) {
return func(c *Config) {
c.layout = layout
}
}
func WithPrinter(printer printer) func(*Config) {
return func(c *Config) {
c.printer = printer
}
}
func (c *Config) NewCaptureTransport(transport http.RoundTripper, getPrefix func() string) http.RoundTripper {
if transport == nil {
transport = http.DefaultTransport
}
switch c.writeFileBaseDir {
case "":
return &capture.ConsoleTransport{
Transport: transport,
Printer: c.printer,
Layout: c.layout,
}
default:
return &capture.WriteFileTransport{
Transport: transport,
FileManager: getFileManagerWithDefault(c.writeFileBaseDir, c.disableCount),
Layout: c.layout,
GetPrefix: getPrefix,
}
}
}
var (
fileManagerMap = map[string]*capture.FileManager{}
mu sync.Mutex
)
func getFileManagerWithDefault(basedir string, disableCount bool) *capture.FileManager {
mu.Lock()
defer mu.Unlock()
m, ok := fileManagerMap[basedir]
if ok {
return m
}
var c int64
m = &capture.FileManager{
BaseDir: capture.Dir(basedir),
DisableCount: disableCount,
Counter: &c,
}
fileManagerMap[basedir] = m
return m
}