如何在RoR 网站中使用"POST url" JSON 文件？

Question

我在 Rails 和 Kibana 上使用 Ruby 在我的网站上显示可视化（Ruby2.6.0，Rails5.2.3，Kibana6.6.1） .通过使用 Xpack->Share->Generate PDF/PNG，我找到了 'copy POST url'。我可以使用 'net/http' 从 POST url 中获取以下 JSON 文件，但是如何在我的 RoR 中使用 POST url/JSON 文件网站下载 'assets' 文件夹中的 PNG 文件？

JSON 文件我从 POST url:

{'path': '/api/reporting/jobs/download/jvds4zs10qv79d0062b9cel6', 'job': {'id': 'jvds4zs10qv79d0062b9cel6', 'index': '.reporting-2019.05.05', 'type': 'esqueue', 'jobtype': 'PNG', 'created_by': False, 'payload': {'type': 'visualization', 'title': '[eCommerce] Sales by Gender', 'relativeUrl': "/app/kibana#/visualize/edit/ed8436b0-b88b-11e8-a6d9-e546fe2bba5f?_g=(refreshInterval:(pause:!t,value:0),time:(from:now-60d,mode:quick,to:now))&_a=(filters:!(),linked:!f,query:(language:lucene,query:''),uiState:(),vis:(aggs:!((enabled:!t,id:'1',params:(),schema:metric,type:count),(enabled:!t,id:'2',params:(field:customer_gender,json:'',missingBucket:!f,missingBucketLabel:Missing,order:desc,orderBy:'1',otherBucket:!f,otherBucketLabel:Other,size:5),schema:segment,type:terms)),params:(addLegend:!t,addTooltip:!t,isDonut:!t,labels:(last_level:!t,show:!t,truncate:100,values:!t),legendPosition:right,type:pie),title:'%5BeCommerce%5D+Sales+by+Gender',type:pie))", 'headers': 'uxY4w6gCRwwLZyFkDX0ujVlANYq7ae5UuNJAN0GpbTOX7vw5aPuCuyr37nNcpz3vtA8kNVaL6Gacs24mPjZfwl4mB9xRKGA62CkCLo8Xz1amuIEthI+BtKPGo5QAk2k2+7zLvLgX3KouVvYdd61U5rLAvfjv4TydcpH9qJ4qrL5OELkzAJGrNdujtDLWaoy2Qj9YXbLnh7gSdI+lrNml6usZIh4pMzz8qdRo597iO/4AeSJRa2JfAruyGB3zYInZRtMuCbA4f3ANvT2WeAn6lpiwThB993uEjwu4LBVUZuo2XL0TcB29YNNa9oMCUEhWjdJ1ase5VQdz8V2IOgecQ1W52V5JuVTvl9SkVvFWSBhXJg==', 'browserTimezone': 'Europe/Zurich', 'layout': {'dimensions': {'height': 589.234375, 'width': 866}}, 'basePath': '', 'forceNow': '2019-05-07T12:38:12.768Z'}, 'timeout': 120000, 'max_attempts': 3, 'priority': 10, 'browser_type': 'chromium'}}

我正在尝试使用 'net/http'，我在控制器中添加的内容：

class MaisonController < ApplicationController

  require 'net/http'

  def require_post
    uri = URI.parse("http://localhost:5601/api/reporting/generate/png?jobParams=(browserTimezone:Europe%2FZurich,layout:(dimensions:(height:589.234375,width:866)),objectType:visualization,relativeUrl:%27%2Fapp%2Fkibana%23%2Fvisualize%2Fedit%2Fed8436b0-b88b-11e8-a6d9-e546fe2bba5f%3F_g%3D(refreshInterval:(pause:!!t,value:0),time:(from:now-60d,mode:quick,to:now))%26_a%3D(filters:!!(),linked:!!f,query:(language:lucene,query:!%27!%27),uiState:(),vis:(aggs:!!((enabled:!!t,id:!%271!%27,params:(),schema:metric,type:count),(enabled:!!t,id:!%272!%27,params:(field:customer_gender,json:!%27!%27,missingBucket:!!f,missingBucketLabel:Missing,order:desc,orderBy:!%271!%27,otherBucket:!!f,otherBucketLabel:Other,size:5),schema:segment,type:terms)),params:(addLegend:!!t,addTooltip:!!t,isDonut:!!t,labels:(last_level:!!t,show:!!t,truncate:100,values:!!t),legendPosition:right,type:pie),title:!%27%255BeCommerce%255D%2BSales%2Bby%2BGender!%27,type:pie))%27,title:%27%5BeCommerce%5D%20Sales%20by%20Gender%27)")
    http = Net::HTTP.new(uri.host,uri.port)

    request = Net::HTTP::Post.new(uri.request_uri)
    response = http.request(request)
    render :json => response.body
  end
end

编辑：我尝试使用 'attachment_fu' gem 来下载带有上述 JSON 文件的 png 文件。将Controller中的代码修改为如下代码： class MaisonController < ApplicationController

require 'net/http'
require 'open-uri'

def require_post
    uri = URI.parse("http://localhost:5601/api/reporting/generate/png?jobParams=(browserTimezone:Europe%2FZurich,layout:(dimensions:(height:589.234375,width:866)),objectType:visualization,relativeUrl:%27%2Fapp%2Fkibana%23%2Fvisualize%2Fedit%2Fed8436b0-b88b-11e8-a6d9-e546fe2bba5f%3F_g%3D(refreshInterval:(pause:!!t,value:0),time:(from:now-60d,mode:quick,to:now))%26_a%3D(filters:!!(),linked:!!f,query:(language:lucene,query:!%27!%27),uiState:(),vis:(aggs:!!((enabled:!!t,id:!%271!%27,params:(),schema:metric,type:count),(enabled:!!t,id:!%272!%27,params:(field:customer_gender,json:!%27!%27,missingBucket:!!f,missingBucketLabel:Missing,order:desc,orderBy:!%271!%27,otherBucket:!!f,otherBucketLabel:Other,size:5),schema:segment,type:terms)),params:(addLegend:!!t,addTooltip:!!t,isDonut:!!t,labels:(last_level:!!t,show:!!t,truncate:100,values:!!t),legendPosition:right,type:pie),title:!%27%255BeCommerce%255D%2BSales%2Bby%2BGender!%27,type:pie))%27,title:%27%5BeCommerce%5D%20Sales%20by%20Gender%27)")
    http = Net::HTTP.new(uri.host,uri.port)

    request = Net::HTTP::Post.new(uri.request_uri)
    response = http.request(request)
    render :json => response.body

    http.start() { |http|
    tempfile = Tempfile.new('test.png')
    File.open(tempfile.path, 'w') do |f|
        f.write response.body
    end
    attachment = Attachment.new(:upload_data => LocalFile.new(tempfile.path))
    attachment.save
    }
end

我得到的错误是 'uninitialized constant MaisonController::Attachment'。

预期结果：使用上述JSON文件在assets中下载png文件。

Answer 1

我将回答我自己关于我在我的项目中尝试过的问题并关闭这个问题。

我在 'Kibana->Visualisation/Dashboard->PDF/PNG' 中获得了 'copy POST url'。就是一个posturl。我用 url 向 kibana 服务器发送了 post 请求。该操作将触发 kibana 服务器 'pending'、'processing' 并生成报告。我将从服务器返回一个 JSON 文件。 JSON 文件中有一个重要的作业 ID，例如 'jvi53ajd21w09d006233kcvo'。我可以在 'Management->Reporting' 中找到所有历史报告。最后，我使用生成的 url 'http://localhost:5601/api/reporting/jobs/download/jvi53ajd21w09d006233kcvo' 和 'wget' 命令将报告下载到我的本地文件夹中。

您可以在这里找到类似的答案：https://discuss.elastic.co/t/how-to-use-post-url-to-share-visualisation-in-my-website/179671/4

希望我的回答能对想在Kibana中使用POSTURL的朋友有所帮助

如何在RoR 网站中使用"POST url" JSON 文件？

How to use "POST url" JSON file in RoR website?

ruby-on-rails-3

kibana