MessageHandler | Simple Handler forwarding | Learning library

 def main():

 """Start the bot."""
 
 global token, allowedUsers

 # Create the Updater and pass it your bot's token.
 updater = Updater(token)

 # Get the dispatcher to register handlers
 dispatcher = updater.dispatcher

 # Registering handlers

 dispatcher.add_handler(CommandHandler("start", start))
 dispatcher.add_handler(CommandHandler("help", help_info))
 dispatcher.add_handler(CommandHandler("learn", learn))
 dispatcher.add_handler(CommandHandler("revise", revise))
 dispatcher.add_handler(CommandHandler("quote", quote))
 dispatcher.add_handler(CommandHandler("more", more))
 dispatcher.add_handler(CommandHandler("quiz", quiz))

 # on non command i.e message

 dispatcher.add_handler(MessageHandler(Filters.text, messageHandler))

 # Start the Bot
 updater.start_polling(drop_pending_updates=True)

 updater.idle()

 2022-04-02 08:53:21,539 - apscheduler.scheduler - INFO - Scheduler
 started 2022-04-02 15:59:10,367 -
 telegram.vendor.ptb_urllib3.urllib3.connectionpool - WARNING -
 Retrying (Retry(total=2, connect=None, read=None, redirect=None))
 after connection broken by
 'NewConnectionError('<telegram.vendor.ptb_urllib3.urllib3.connection.VerifiedHTTPSConnection
 object at 0x0000028CB212F160>: Failed to establish a new connection:
 [Errno 11001] getaddrinfo failed')':
 /bot98956256546:THISisJustRandomStuffdon'tmindme/getUpdates 2022-04-02
 15:59:10,378 - telegram.vendor.ptb_urllib3.urllib3.connectionpool -
 WARNING - Retrying (Retry(total=1, connect=None, read=None,
 redirect=None)) after connection broken by
 'NewConnectionError('<telegram.vendor.ptb_urllib3.urllib3.connection.VerifiedHTTPSConnection
 object at 0x0000028CB21330A0>: Failed to establish a new connection:
 [Errno 11001] getaddrinfo failed')':
 /bot98956256546:THISisJustRandomStuffdon'tmindme/getUpdates 2022-04-02
 15:59:10,379 - telegram.vendor.ptb_urllib3.urllib3.connectionpool -
 WARNING - Retrying (Retry(total=0, connect=None, read=None,
 redirect=None)) after connection broken by
 'NewConnectionError('<telegram.vendor.ptb_urllib3.urllib3.connection.VerifiedHTTPSConnection
 object at 0x0000028CB212E400>: Failed to establish a new connection:
 [Errno 11001] getaddrinfo failed')':
 /bot98956256546:THISisJustRandomStuffdon'tmindme/getUpdates 2022-04-02
 15:59:10,380 - telegram.ext.updater - ERROR - Error while getting
 Updates: urllib3 HTTPError
 HTTPSConnectionPool(host='api.telegram.org', port=443): Max retries
 exceeded with url:
 /bot98956256546:THISisJustRandomStuffdon'tmindme/getUpdates (Caused by
 NewConnectionError('<telegram.vendor.ptb_urllib3.urllib3.connection.VerifiedHTTPSConnection
 object at 0x0000028CB212E580>: Failed to establish a new connection:
 [Errno 11001] getaddrinfo failed'))

import logging

logging.getLogger("telegram").setLevel(logging.CRITICAL)
logger = logging.getLogger(__name__)

import logging

logging.getLogger("telegram.vendor,ptb_urllib3.urllib3").setLevel(
    logging.CRITICAL)
logger = logging.getLogger(__name__)

try (Environment environment = Environment.builder().uri("rabbitmq-stream://guest:guest@localhost:5552")
                .build()) {

            environment.streamCreator().stream("tenth-application-stream").create();
            Producer producer = environment.producerBuilder().stream("tenth-application-stream") 
                    .build();

        int messageCount = 1_000_000;

        CountDownLatch confirmLatch = new CountDownLatch(messageCount);
        IntStream.range(0, messageCount).forEach(i -> {
            Message message = producer.messageBuilder().properties().creationTime(System.currentTimeMillis())
                    .messageId(i).messageBuilder().properties().groupId(String.valueOf(i)).messageBuilder()
                    .addData(String.valueOf(i).getBytes(StandardCharsets.UTF_8)).build();
            producer.send(message, confirmationStatus -> confirmLatch.countDown());
        });
        try {
            boolean done = confirmLatch.await(10, TimeUnit.MINUTES);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    } catch (StreamException e) {
        System.out.println(e);
    }

    Consumer consumer = environment.consumerBuilder().stream("tenth-application-stream")
            .offset(OffsetSpecification.first()).messageHandler((context, message) -> {
                System.out.println(message.getBody().toString());

            }).build();

 try {
           //Some error occours
    } catch (error) {
        console.log(JSON.stringify(error)) //statement 1
        console.error(error) //statement 2
        console.log(error.message) //statement 3
        console.log(Object.keys(error)) //statement 4
    }

MongoServerError: E11000 duplicate key error collection: trendyApp.Markets index: name_1 dup key: { name: "murat market" }
    at D:\web projects\trendyApp\server\node_modules\mongodb\lib\operations\insert.js:51:33
    at D:\web projects\trendyApp\server\node_modules\mongodb\lib\cmap\connection_pool.js:273:25
    at handleOperationResult (D:\web projects\trendyApp\server\node_modules\mongodb\lib\sdam\server.js:363:9)
    at MessageStream.messageHandler (D:\web projects\trendyApp\server\node_modules\mongodb\lib\cmap\connection.js:474:9)
    at MessageStream.emit (events.js:375:28)
    at processIncomingData (D:\web projects\trendyApp\server\node_modules\mongodb\lib\cmap\message_stream.js:108:16)
    at MessageStream._write (D:\web projects\trendyApp\server\node_modules\mongodb\lib\cmap\message_stream.js:28:9)
    at writeOrBuffer (internal/streams/writable.js:358:12)
    at MessageStream.Writable.write (internal/streams/writable.js:303:10)
    at TLSSocket.ondata (internal/streams/readable.js:726:22) {
  index: 0,
  code: 11000,
  keyPattern: { name: 1 },
  keyValue: { name: 'murat market' }
}

{"index":0,"code":11000,"keyPattern":{"name":1},"keyValue":{"name":"murat market"}}

E11000 duplicate key error collection: trendyApp.Markets index: name_1 dup key: { name: "murat market" }

[ 'index', 'code', 'keyPattern', 'keyValue' ]

messenger:
    failure_transport: failed

    transports:
        async_medium:
            dsn: '%env(MESSENGER_TRANSPORT_DSN)%'
            retry_strategy:
                max_retries: 3
                delay: 1000
        failed:
            ...

    routing:
        'Name\Space\MessageHandler\SnowplowNotificationHandler': async_medium

Messenger

messenger.bus.default

 The following messages can be dispatched:
  Name\Space\Message\SnowplowMessage                                                  
     handled by Name\Space\MessageHandler\SnowplowEmailNotificationHandler  

cmake_minimum_required(VERSION 3.20)
project(Direct3DTut)

set(CMAKE_CXX_STANDARD 17)

add_executable(${PROJECT_NAME} WIN32
                WinMain.cpp Window.cpp MessageHandler.cpp Graphics.cpp
                Keyboard.cpp Mouse.cpp
                Utils.cpp)

set(LIBS d3d11 D3DCompiler)
target_link_libraries(${PROJECT_NAME} ${LIBS})

#include <cstdlib>
#include <iostream>
#include <utility>
#include <thread>
#include <asio/ts/buffer.hpp>
#include <asio/ts/internet.hpp>
#include "messages.h"

using asio::ip::tcp;

class session
    : public std::enable_shared_from_this<session>
{
public:
    session(tcp::socket socket)
        : socket_(std::move(socket))
    {
    }

    void start()
    {
        handler = MessageHandler();
        asio::write(socket_, asio::buffer(handler.initialMessage()));
        do_read();
    }

private:
    void do_read()
    {
        auto self(shared_from_this());
        socket_.async_read_some(asio::buffer(data_, max_length),
            [this, self](std::error_code ec, std::size_t length)
            {
                if (!ec)
                {
                    buffer_.append(data_, length);
                    size_t pos;
                    while ((pos = buffer_.find('\0')) != std::string::npos)
                    {
                        std::string message = buffer_.substr(0, pos);
                        buffer_.erase(0, pos + 1);

                        std::thread(&session::process_message, this, message).detach();
                    }

                    do_read();
                }
                else if (ec != asio::error::eof)
                {
                    std::cerr << "Read error: " << ec.message() << '\n';
                }
            });
    }

    void do_write(std::string message)
    {
        auto self(shared_from_this());
        asio::async_write(socket_, asio::buffer(message),
            [this, self](std::error_code ec, std::size_t /*length*/)
            {
                if (!ec)
                {
                }
                else if (ec != asio::error::eof)
                {
                    std::cerr << "Write error: " << ec.message() << '\n';
                }
            });
    }

    void process_message(std::string message) {
        std::string response = handler.processMessage(message);
        do_write(response);
    }

    tcp::socket socket_;
    enum { max_length = 1024 };
    char data_[max_length];
    std::string buffer_;
    MessageHandler handler;
};

class server
{
public:
    server(asio::io_context& io_context, unsigned short port)
        : acceptor_(io_context, tcp::endpoint(tcp::v4(), port)),
        socket_(io_context)
    {
        do_accept();
    }

private:
    void do_accept()
    {
        acceptor_.async_accept(socket_,
            [this](std::error_code ec)
            {
                if (!ec)
                {
                    std::make_shared<session>(std::move(socket_))->start();
                }

                do_accept();
            });
    }

    tcp::acceptor acceptor_;
    tcp::socket socket_;
};

void serverInit()
{
    try
    {
        asio::io_context io_context;

        server s(io_context, 0);

        io_context.run();
    }
    catch (std::exception& e)
    {
        std::cerr << "Exception: " << e.what() << '\n';
    }
}

import telegram.ext
from telegram.ext import CommandHandler, MessageHandler, Filters
import schedule
import time

API_KEY = 'XXXXXXXXXXX'   
updater = telegram.ext.Updater(API_KEY)
dispatcher = updater.dispatcher


def start(update, context):
    update.message.reply_text('Welcome!')


# problem:
def Test(update, context):
    update.message.reply_text('Works!!!')


# running special functions every Day at a given Time
schedule.every().day.at("10:00").do(Test)


while True:
    schedule.run_pending()
    time.sleep(1)


def main():
    # add handlers for start and help commands
    dispatcher.add_handler(CommandHandler("start", start))


    # start your bot
    updater.start_polling()
    # run the bot until Ctrl-C
    updater.idle()

exports.savePageContent = (req, res, next) => {
    const id = req.body.dest;  // getting page data document id
    delete req.body.dest;
    var arr = [];

    // When we are returning the same page each time after we submit the data for the particuklar section form then how are we supposed to redirect the user to next page once he is done doing all 

    var fieldKeys = Object.keys(req.body);
    for(let i = 0; i < fieldKeys.length; i++)
    {
        arr.push({fieldRef : fieldKeys[i], fieldValue : req.body[fieldKeys[i]]});
    }

    pageDataModel.findByIdAndUpdate(id, {pageData : arr}).exec(function(err, result) {
        if(err){
            console.log(err);
        }
        else { 
            console.log("data is inserted");
            req.flash('message', "Data Saved Successfully");
            
        }
    })

} 

exports.savePageContent = (req, res, next) => {
    const pageid = req.body.dest;  // getting page data document id
    delete req.body.dest;

    var fieldRefData = "";
    var fieldValueData = "";

    var fieldKeys = Object.keys(req.body);
    for(let i = 0; i < fieldKeys.length; i++)
    {
        fieldRefData = fieldKeys[i];
        fieldValueData = req.body[fieldKeys[i]];

       try{

        pageDataModel.update({id : pageid, "pageData.fieldRef" : fieldRefData}, {$set : {"pageData.$.fieldValue" : fieldValueData }}, {upsert : true}).exec(function(err, result) {
            if(err){
                console.log(err);
            }
            else { 
                console.log("data is inserted", result);
            }
        });

        req.flash('message', "Data Saved Successfully");

       }catch(e){
        console.log(e);
        req.flash('message', "error Occurred updating Data ");

       }
    }

    

}  

[
  { fieldRef: 'sec1.1.h1', fieldValue: 'this is the field value 1' },
  { fieldRef: 'sec1.1.p', fieldValue: 'this is the field value 1' },
  { fieldRef: 'sec1.1.a', fieldValue: 'this is the field value 1' },
  { fieldRef: 'sec1.2.h2', fieldValue: 'this is the field value 1' }
]

[
  { fieldRef: 'sec2.1.h1', fieldValue: 'this the field value 2' },
  { fieldRef: 'sec2.1.p', fieldValue: 'this the field value 2' },
  { fieldRef: 'sec2.1.a', fieldValue: 'this the field value 2' },
  { fieldRef: 'sec2.2.h1', fieldValue: 'this the field value 2' }
]

MongoServerError: The positional operator did not find the match needed from the query.
    at /home/pushkar/Desktop/NodejsWebApp1/node_modules/mongodb/lib/operations/update.js:80:33
    at /home/pushkar/Desktop/NodejsWebApp1/node_modules/mongodb/lib/cmap/connection_pool.js:272:25
    at handleOperationResult (/home/pushkar/Desktop/NodejsWebApp1/node_modules/mongodb/lib/sdam/server.js:370:9)
    at MessageStream.messageHandler (/home/pushkar/Desktop/NodejsWebApp1/node_modules/mongodb/lib/cmap/connection.js:479:9)
    at MessageStream.emit (events.js:400:28)
    at processIncomingData (/home/pushkar/Desktop/NodejsWebApp1/node_modules/mongodb/lib/cmap/message_stream.js:108:16)
    at MessageStream._write (/home/pushkar/Desktop/NodejsWebApp1/node_modules/mongodb/lib/cmap/message_stream.js:28:9)
    at writeOrBuffer (internal/streams/writable.js:358:12)
    at MessageStream.Writable.write (internal/streams/writable.js:303:10)
    at Socket.ondata (internal/streams/readable.js:731:22) {
  index: 0,
  code: 2
}

protected override async Task OnAfterRenderAsync(bool firstRender)
{
  // On page load. Service bus watcher is hooked up here
  await serviceBusHandler.WatchQueue("servicebus-queue", MessageHandler, async _ => await Task.CompletedTask);
}

// "request" method; calls a Service Bus method get a new value for our model
private async Task SaveAndGetAmount()
{
  IsLoading = true;

  // creation of Service Bus message omitted
  // post to "servicebus-queue" with message here
}

private async Task MessageHandler(ProcessSessionMessageEventArgs args)
{
  var result = ... // parsing of "args" message omitted

  await args.CompleteMessageAsync(args.Message); // mark Azure Functions message received
  
  await InvokeAsync(() =>
  {
    IsLoading = false;
    Model.Amount = result.Amount; // update page model here
    StateHasChanged(); // indicate to UI that the model has changed, and the page must re-render
  });

struct DemoView: View {
    @State private var headline: String = "Initial"

    var body: some View {
        NavigationView {
            VStack {
                Form {
                    TextField("Your headline", text: $headline)
                }
                WebView(headline: $headline)
            }
        }
    }
}

import WebKit

let bridgeHTML = """
 <!DOCTYPE html>
 <html>
 <head>
 <meta name="viewport" content="width=device-width, height=device-height, initial-scale=1, minimum-scale=1, viewport-fit=cover">
 </head>
 <body>
 <h3 id="headline">Headline</h3>
 <script>
    // to receive messages from native
      webkit.messageHandlers.bridge.onMessage = (msg) => {
        document.getElementById("headline").textContent = msg
      }
    </script>
    </body>
    </html>
"""

struct WebView: UIViewRepresentable {

    @Binding var headline: String

    class Coordinator: NSObject, WKNavigationDelegate, WKScriptMessageHandler {
        func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
        }

        private var owner: WebView
        init(owner: WebView) {
            self.owner = owner
        }

        var webView: WKWebView?
        func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
            self.webView = webView
            self.messageToWebview(msg: self.owner.headline)   // initial value loading !!
        }

        func messageToWebview(msg: String) {
            self.webView?.evaluateJavaScript("webkit.messageHandlers.bridge.onMessage('\(msg)')")
        }
    }

    func makeCoordinator() -> Coordinator {
        return Coordinator(owner: self)
    }

    func makeUIView(context: Context) -> WKWebView {
        let userContentController = WKUserContentController()
        userContentController.add(context.coordinator, name: "bridge")

        let configuration = WKWebViewConfiguration()
        configuration.userContentController = userContentController

        let _wkwebview = WKWebView(frame: .zero, configuration: configuration)
        _wkwebview.navigationDelegate = context.coordinator

        guard let path: String = Bundle.main.path(forResource: "index", ofType: "html") else { return _wkwebview }
        let localHTMLUrl = URL(fileURLWithPath: path, isDirectory: false)
        _wkwebview.loadFileURL(localHTMLUrl, allowingReadAccessTo: localHTMLUrl)

//        _wkwebview.loadHTMLString(bridgeHTML, baseURL: nil)    // << used for testing

        return _wkwebview
    }

    func updateUIView(_ webView: WKWebView, context: Context) {
        // this works for update, but for initial it is too early !!
        webView.evaluateJavaScript("webkit.messageHandlers.bridge.onMessage('\(headline)')")
    }
}