Google App Engine环境中托管的Golang网络应用程序出错;应用程序前端BigQuery [英] Errors with a Golang web app hosted in a Google App Engine environment; the app front-ends BigQuery
问题描述
我构建了一个Golang Web应用程序，该应用程序以Google BigQuery项目为前端。应用程序有这些导入
import（
context
html / template
log
net / http
regexp
字符串
strconv
cloud.google.com/go/bigquery
google.golang.org/api/iterator
）
和a用于BigQuery安全证书的JSON文件。本地，它在localhost：8080完美工作。然后，我尝试使用Google App Engine托管它，并且遇到了一些错误。
对于Google App Engine部署，我首先在本地安装Google Cloud SDK，然后运行gcloud init ，并安装了
gcloud组件安装app-engine-go
bq
核心
gsutil
gcloud
beta
app-engine-python
包。我从main.go中删除了main（）函数，并且项目目录中有一个YAML文件。我跑了
gcloud config set project {正确的项目ID}
在DOS窗口中，我运行了
gcloud app deploy
在项目目录中。我得到了这个错误（格式化为SO，并删除私人信息）：
C：\Golang Web Dev \golang- web-dev-master\bigqueryApp_AppEngine> gcloud应用程序部署
错误：（gcloud.app.deploy）
分段命令
[C：\程序文件（x86）\Google\Cloud SDK\google-cloud-sdk\platform\google_appengine\goapp-stager.exe
C：\Golang Web Dev \ golang-web-dev-master \bigqueryApp_AppEngine\app.yaml
C：\Golang Web Dev \golang-web-dev-master\bigqueryApp_AppEngine
c：\ ----- \ ----- \appdata\local\temp\ -------- \ --------]
返回码[1]失败。
------------------------------------- STDOUT ---- ---------------------------------
------------- ------------------------ STDERR ------------------------- ------------
2017/07/18 18:14:44分析失败C：\Golang Web Dev \golang-web-dev-master\ bigqueryApp_AppEngine：
在以下任何一项中找不到包google.golang.org/appengine/socket：
（$ GOROOT未设置）
C：\ Go Workspace\\ src\google.golang.org\\appeappeine\socket（from $ GOPATH）
GOPATH：C：\ Go Workspace\src\google
我将这个错误追溯到导入的
cloud.google.com/go/bigquery
包;如果没有cloud.google.com/go/bigquery，另一个测试应用可以正常使用此技术。我尝试导入
google.golang.org/appengine/socket
包中的应用程序中，我得到另一个编译错误;它看起来像这个页面说甚至不去那里。接下来，我使用原始应用程序在此视频中尝试了这些想法，将原始主要（）函数在main.go中。我键入
gcloud app deploy
在云端Shell窗口中。我得到了这个
$ ---_ ----------- @ -------- ------- X ------：〜/ bigqueryApp
$ gcloud应用程序部署
错误：（gcloud.app.deploy）暂存命令[/ google / google-cloud-sdk /platform/google_appengine/goroot-1.6/bin/go-app-stager
/home/---_---------/bigqueryApp/app.yaml / tmp / ----- ---- / ---------]
失败，返回代码[1]。
------------------------------------ STDOUT ----- -------------------------------
--------------- --------------------- STDERR ---------------------------- --------
2017/07/18 21:30:23失败分析/ home / ---_--------- / bigqueryApp：
在以下任何一项中找不到包google.golang.org/api/iterator：
（$ GOROOT未设置）
/ home / ---_RY- / gopath / src / google.golang.org / api / iterator（来自$ GOPATH）
/google/gopath/src/google.golang.org/api/iterator
GOPATH：/ home / --- ____- / gopath：/ google / gopath
错误。该应用程序清楚地导入了迭代器包。我研究/实验/等修复这两种技术的错误，但没有运气。如果有人有想法：如何解决这些错误，我想知道他们，我会很感激。
谢谢！
$ b解决方案：<1>删除context导入 $ b $ b
$ b
2）导入google.golang.org/appengine;见
[https://github.com/golang/appengine/blob/master/README.md] [1]
了解更多详情re：本地appengine软件包安装
3）这个函数
http.HandleFunc（/，bqPage）
调用
bqPage（w http。 ResponseWriter，req * http.Request）
作为处理函数。将第二个req参数传递给构建/调用bigquery客户端的代码：
ctx：= appengine.NewContext（req）
//从Google云端控制台获取projectID值：
projectID：=--------------
//创建一个客户端。
client，err：= bigquery.NewClient（ctx，projectID）
一旦你有了客户端对象，你就可以开始工作了。
4）从DOS窗口指向托管main.go文件的目录，运行
gcloud app deploy
<然后以
gcloud应用程序浏览
I built a Golang web app that front-ends a Google BigQuery project. The app has these imports
import (
"context"
"html/template"
"log"
"net/http"
"regexp"
"strings"
"strconv"
"cloud.google.com/go/bigquery"
"google.golang.org/api/iterator"
)
and a JSON file for the BigQuery security credentials. Locally, it works perfectly at localhost:8080. Then, I tried to host it with Google App Engine and I hit some bugs.
For Google App Engine deployment, I first installed Google Cloud SDK locally, I ran gcloud init, and I installed the
gcloud components install app-engine-go
bq
core
gsutil
gcloud
beta
app-engine-python
packages. I removed the main() function from main.go, and the project directory has a YAML file. I ran
gcloud config set project {correct project ID}
and in a DOS window, I ran
gcloud app deploy
at the project directory. I got this error (formatted for SO and to remove private information):
C:\Golang Web Dev\golang-web-dev-master\bigqueryApp_AppEngine>gcloud app deploy
ERROR: (gcloud.app.deploy)
Staging command
[C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\platform\google_appengine\goapp-stager.exe
C:\Golang Web Dev\golang-web-dev-master\bigqueryApp_AppEngine\app.yaml
C:\Golang Web Dev\golang-web-dev-master\bigqueryApp_AppEngine
c:\-----\-----\appdata\local\temp\--------\--------]
failed with return code [1].
-------------------------------------STDOUT-------------------------------------
-------------------------------------STDERR-------------------------------------
2017/07/18 18:14:44 failed analyzing C:\Golang Web Dev\golang-web-dev-master\bigqueryApp_AppEngine:
cannot find package "google.golang.org/appengine/socket" in any of:
($GOROOT not set)
C:\Go Workspace\src\google.golang.org\appengine\socket (from $GOPATH)
GOPATH: C:\Go Workspace\src\google
I traced this bug down to the imported
"cloud.google.com/go/bigquery"
package; another "test" app without cloud.google.com/go/bigquery works OK using this technique. I tried to import the
google.golang.org/appengine/socket
package in the app and I got another compile error; it looks like this page says don’t even go there. Next, I tried the ideas in this vid using the original application, keeping the original main() function in main.go. I typed
gcloud app deploy
in a Cloud Shell window. I got this
$ ---_---------@---------------X------:~/bigqueryApp
$ gcloud app deploy
ERROR: (gcloud.app.deploy) Staging command [/google/google-cloud-sdk/platform/google_appengine/goroot-1.6/bin/go-app-stager
/home/---_---------/bigqueryApp/app.yaml /tmp/---------/---------]
failed with return code [1].
------------------------------------ STDOUT ------------------------------------
------------------------------------ STDERR ------------------------------------
2017/07/18 21:30:23 failed analyzing /home/---_---------/bigqueryApp:
cannot find package "google.golang.org/api/iterator" in any of:
($GOROOT not set)
/home/---_---------/gopath/src/google.golang.org/api/iterator (from $GOPATH)
/google/gopath/src/google.golang.org/api/iterator
GOPATH: /home/---_---------/gopath:/google/gopath
error. The app clearly imports the iterator package. I researched / experimented / etc. to fix the bugs in both techniques but no luck. If someone has ideas re: how to fix these bugs, I’d like to know them and I’d be grateful.
Thank you!
Solution:
1) Remove the "context" import
2) Import "google.golang.org/appengine"; see
[https://github.com/golang/appengine/blob/master/README.md][1]
for more details re: the local appengine package installation
3) This function
http.HandleFunc("/", bqPage)
calls
bqPage(w http.ResponseWriter, req *http.Request)
as the handler function. Pass that second req parameter down to the code that builds / calls the bigquery client:
ctx := appengine.NewContext(req)
// Get the projectID value from the Google Cloud Console:
projectID := "--------------"
// Create a client.
client, err := bigquery.NewClient(ctx, projectID)
Once you have the client object, you're in business.
4) From a DOS window pointed to the directory hosting the main.go file, run
gcloud app deploy
and then run the app with
gcloud app browse
这篇关于Google App Engine环境中托管的Golang网络应用程序出错;应用程序前端BigQuery的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
