servant

CORS header ‘Access-Control-Allow-Origin’ missing in servant

青春壹個敷衍的年華 提交于 2020-12-30 09:36:53
问题 using the run from Network.Wai.Handler.Warp function to server rest api run :: Port -> Application -> IO () but while doing post request, getting an error CORS header ‘Access-Control-Allow-Origin’ . any idea how to overcome this in servant/haskell 回答1: You could use wai-cors middleware to add CORS headers. At the end you'll have something like app = simpleCors $ serve api serverImpl where simpleCors is a Middleware from wai-cors serve turns servant handlers into wai Application api :: Proxy

CORS header ‘Access-Control-Allow-Origin’ missing in servant

人盡茶涼 提交于 2020-12-30 09:36:48
问题 using the run from Network.Wai.Handler.Warp function to server rest api run :: Port -> Application -> IO () but while doing post request, getting an error CORS header ‘Access-Control-Allow-Origin’ . any idea how to overcome this in servant/haskell 回答1: You could use wai-cors middleware to add CORS headers. At the end you'll have something like app = simpleCors $ serve api serverImpl where simpleCors is a Middleware from wai-cors serve turns servant handlers into wai Application api :: Proxy

CORS header ‘Access-Control-Allow-Origin’ missing in servant

纵饮孤独 提交于 2020-12-30 09:36:27
问题 using the run from Network.Wai.Handler.Warp function to server rest api run :: Port -> Application -> IO () but while doing post request, getting an error CORS header ‘Access-Control-Allow-Origin’ . any idea how to overcome this in servant/haskell 回答1: You could use wai-cors middleware to add CORS headers. At the end you'll have something like app = simpleCors $ serve api serverImpl where simpleCors is a Middleware from wai-cors serve turns servant handlers into wai Application api :: Proxy

CORS header ‘Access-Control-Allow-Origin’ missing in servant

隐身守侯 提交于 2020-12-30 09:36:09
问题 using the run from Network.Wai.Handler.Warp function to server rest api run :: Port -> Application -> IO () but while doing post request, getting an error CORS header ‘Access-Control-Allow-Origin’ . any idea how to overcome this in servant/haskell 回答1: You could use wai-cors middleware to add CORS headers. At the end you'll have something like app = simpleCors $ serve api serverImpl where simpleCors is a Middleware from wai-cors serve turns servant handlers into wai Application api :: Proxy

OpenYurt 开箱测评 | 一键让原生 K8s 集群具备边缘计算能力

你离开我真会死。 提交于 2020-08-20 01:01:56
云栖号资讯:【 点击查看更多行业资讯 】 在这里您可以找到不同行业的第一手的上云资讯,还在等什么,快来! 作者 | 郑超 阿里云高级开发工程师 随着物联网技术以及 5G 技术的高速发展,将云计算的能力延伸至边缘设备端,并通过中心进行统一交付、管控,已成为云计算的重要发展趋势。为服务更多开发者把握这一趋势,5 月 29 日,阿里巴巴正式对外开源了基于 ACK@Edge(边缘集群托管服务)的云原生边缘计算框架 —— OpenYurt。 自 OpenYurt 开源以来受到了开发者的关注,今天这篇文章将带大家快速上手 OpenYurt ,介绍如何使用 OpenYurt 提供的命令行管理工具 Yurtctl, 高效快速地部署 OpenYurt 集群。 OpenYurt 介绍 OpenYurt 主打“云边一体化”概念, 依托 Kubernetes 强大的容器应用编排能力,满足了云-边一体化的应用分发、交付、和管控的诉求。相较于其他基于 Kubernetes 的边缘计算框架,OpenYurt 秉持着“最小修改”原则,通过在边缘节点安装 Yurthub 组件,和在云端部署 Yurt-controller-manager,保证了在对 Kubernetes 零侵入的情况下,提供管理边缘计算应用所需的相关能力。OpenYurt 能帮用户解决在海量边、端资源上完成大规模应用交付、运维、管控的问题

微服务开源框架TARS的RPC源码解析 之 初识TARS C++服务端

偶尔善良 提交于 2020-08-14 09:25:27
作者:Cony 导语:微服务开源框架TARS的RPC调用包含客户端与服务端,《微服务开源框架TARS的RPC源码解析》系列文章将从初识客户端、客户端的同步及异步调用、初识服务端、服务端的工作流程四部分,以C++语言为载体,深入浅出地带你了解TARS RPC调用的原理。 什么是TARS TARS是腾讯使用十年的微服务开发框架,目前支持C++、Java、PHP、Node.js、Go语言。该开源项目为用户提供了涉及到开发、运维、以及测试的一整套微服务平台PaaS解决方案,帮助一个产品或者服务快速开发、部署、测试、上线。目前该框架应用在腾讯各大核心业务,基于该框架部署运行的服务节点规模达到数十万。 TARS的通信模型中包含客户端和服务端。客户端服务端之间主要是利用RPC进行通信。本系列文章分上下两篇,对RPC调用部分进行源码解析。本文是下篇,我们将以C++语言为载体,带大家了解一下TARS的服务端。 初识服务端 在使用TARS构建RPC服务端的时候,TARS会帮你生成一个XXXServer类,这个类是继承自Application类的,声明变量XXXServer g_app,以及调用函数: g_app.main(argc, argv); g_app.waitForShutdown(); 便可以开启TARS的RPC服务了。在开始剖析TARS的服务端代码之前,先介绍几个重要的类

OpenYurt 开箱测评 | 一键让原生 K8s 集群具备边缘计算能力

假装没事ソ 提交于 2020-07-27 11:23:49
作者| 郑超 阿里云高级开发工程师 随着物联网技术以及 5G 技术的高速发展,将云计算的能力延伸至边缘设备端,并通过中心进行统一交付、管控,已成为云计算的重要发展趋势。为服务更多开发者把握这一趋势,5 月 29 日,阿里巴巴正式对外开源了基于 ACK@Edge(边缘集群托管服务)的云原生边缘计算框架 —— OpenYurt。 自 OpenYurt 开源以来受到了开发者的关注,今天这篇文章将带大家快速上手 OpenYurt ,介绍如何使用 OpenYurt 提供的命令行管理工具 Yurtctl, 高效快速地部署 OpenYurt 集群。 OpenYurt 介绍 **OpenYurt 主打“云边一体化”概念,**依托 Kubernetes 强大的容器应用编排能力,满足了云-边一体化的应用分发、交付、和管控的诉求。相较于其他基于 Kubernetes 的边缘计算框架,OpenYurt 秉持着“最小修改”原则,通过在边缘节点安装 Yurthub 组件,和在云端部署 Yurt-controller-manager,保证了在对 Kubernetes 零侵入的情况下,提供管理边缘计算应用所需的相关能力。OpenYurt 能帮用户解决在海量边、端资源上完成大规模应用交付、运维、管控的问题,并提供中心服务下沉通道,实现和边缘计算应用的无缝对接。在设计 OpenYurt 之初

Acess a servant server with a reflex-dom client

元气小坏坏 提交于 2020-01-21 10:03:10
问题 I'm using version 0.4 of reflex-dom and I have a tiny reflex-dom client: {-# LANGUAGE OverloadedStrings #-} import Reflex.Dom import qualified Data.Text as T import Data.Monoid main :: IO () main = mainWidget body body :: MonadWidget t m => m () body = el "div" $ do pb <- getPostBuild snd <- button "Send" -- Use one of the following URL's: let defReq = "http://localhost:8080/name/3" -- let defReq = "https://api.nasa.gov/planetary/apod?api_key=DEMO_KEY" let req = XhrRequest "GET" defReq (def {

Acess a servant server with a reflex-dom client

≡放荡痞女 提交于 2020-01-21 10:02:33
问题 I'm using version 0.4 of reflex-dom and I have a tiny reflex-dom client: {-# LANGUAGE OverloadedStrings #-} import Reflex.Dom import qualified Data.Text as T import Data.Monoid main :: IO () main = mainWidget body body :: MonadWidget t m => m () body = el "div" $ do pb <- getPostBuild snd <- button "Send" -- Use one of the following URL's: let defReq = "http://localhost:8080/name/3" -- let defReq = "https://api.nasa.gov/planetary/apod?api_key=DEMO_KEY" let req = XhrRequest "GET" defReq (def {

Haskell Servant Get Current Route / URL From Handler

折月煮酒 提交于 2020-01-03 17:08:22
问题 I'd like to get current route that corresponds to my handler. Here is mockup of my server just for reference: type ServerAPI = "route01" :> Get '[HTML] Text :<|> "route02" :> "subroute" :> Get '[HTML] Text :<|> "route03" :> Get '[HTML] Text And here are some handlers : route1and2Handler :: Handler Text route1and2Handler = do route <- getCurrentRoute addVisitCountForRouteToDatabaseOrSomethingOfThatSort... return template route3Handler :: Handler Text route3Handler = return "Hello, I'm route 03