AppEngine SDK for Go with Bash on Ubuntu on Windows

Question

我试图在Windows上的Ubuntu上使用AppEngine SDK for Go，但我有一个错误。这是我的代码。

app.yaml

runtime: go
api_version: go1
handlers:
- url: /.*
  script: _go_app

main.go

package main
import (
    "net/http"
    "github.com/labstack/echo"
    "github.com/labstack/echo/engine/standard"
)
func init() {
    e := echo.New()
    e.GET("/", func(c echo.Context) error {
        return c.String(http.StatusOK, "Hello, World!")
    })
    s := standard.New("")
    s.SetHandler(e)
    http.Handle("/", s)
}

，这里是错误和命令。

surface@DESKTOP-U7N4QNQ:~/projects$ goapp serve
INFO     2016-08-09 14:24:35,574 devappserver2.py:769] Skipping SDK update check.
INFO     2016-08-09 14:24:35,665 api_server.py:205] Starting API server at: http://localhost:38070
INFO     2016-08-09 14:24:35,670 api_server.py:648] Applying all pending transactions and saving the datastore
INFO     2016-08-09 14:24:35,671 api_server.py:651] Saving search indexes
Traceback (most recent call last):
  File "/home/surface/dev/go_appengine/dev_appserver.py", line 89, in <module>
    _run_file(__file__, globals())
  File "/home/surface/dev/go_appengine/dev_appserver.py", line 85, in _run_file
    execfile(_PATHS.script_file(script_name), globals_)
  File "/home/surface/dev/go_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 1040, in <module>
    main()
  File "/home/surface/dev/go_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 1033, in main
    dev_server.start(options)
  File "/home/surface/dev/go_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 824, in start
    self._dispatcher.start(options.api_host, apis.port, request_data)
  File "/home/surface/dev/go_appengine/google/appengine/tools/devappserver2/dispatcher.py", line 194, in start
    _module.start()
  File "/home/surface/dev/go_appengine/google/appengine/tools/devappserver2/module.py", line 1180, in start
    self._watcher.start()
  File "/home/surface/dev/go_appengine/google/appengine/tools/devappserver2/inotify_file_watcher.py", line 220, in start
    self._add_watch_for_path(directory)
  File "/home/surface/dev/go_appengine/google/appengine/tools/devappserver2/inotify_file_watcher.py", line 205, in _add_watch_for_path
    raise error
OSError: [Errno 22] EINVAL: '/home/surface/projects'
error while running dev_appserver.py: exit status 1
surface@DESKTOP-U7N4QNQ:~/projects$

我没有办法解决这个问题。我认为这是SDK的问题。

Answer 1

我自己得到了答案。

这个问题发生在Windows的Ubuntu上的Bash。

不支持文件监视器。(已经有人提出了问题https://github.com/Microsoft/BashOnWindows/issues/216)

因此，我使用dev_appserver.py和--use_mtime_file_watcher=true选项。

下面是我完整的命令，可以很好地工作。

$ dev_appserver.py --use_mtime_file_watcher=true /home/surface/projects/

谢谢。