shabab tech

Using AWS lambda with API gateway

2023-01-09T17:22:00.009+02:00

1. Overview

AWS Lambda is a serverless computing service provided by Amazon Web Services.

In this tutorial, we'll discuss how to publish a Lambda function as a REST endpoint, using AWS Gateway.

We'll have a detailed look at the following topics:

Basic concepts and terms of API Gateway
Integration of Lambda functions with API Gateway using Lambda Proxy integration
Creation of an API, its structure, and how to map the API resources onto Lambda functions
Deployment and test of the API

2. Basics and Terms

API Gateway is

fully managed service that enables developers to create, publish, maintain, monitor, and secure APIs at any scale.

We can implement a consistent and scalable HTTP-based programming interface (also referred to as RESTful services) to access backend services like Lambda functions, further AWS services (e.g., EC2, S3, DynamoDB), and any HTTP endpoints.

Features include, but are not limited to:

Traffic management
Authorization and access control
Monitoring
API version management
Throttling requests to prevent attacks

Like AWS Lambda, API Gateway is automatically scaled out and is billed per API call.

Detailed information can be found in the official documentation.

2.1. Terms

API Gateway is an AWS service that supports creating, deploying, and managing a RESTful application programming interface to expose backend HTTP endpoints, AWS Lambda functions, and other AWS services.

An API Gateway API is a collection of resources and methods that can be integrated with Lambda functions, other AWS services, or HTTP endpoints in the backend. The API consists of resources that form the API structure. Each API resource can expose one or more API methods that must have unique HTTP verbs.

To publish an API, we have to create an API deployment and associate it with a so-called stage. A stage is like a snapshot in time of the API. If we redeploy an API, we can either update an existing stage or create a new one. By that, different versions of an API at the same time are possible, for example a dev stage, a test stage, and even multiple production versions, like v1, v2, etc.

Lambda Proxy integration is a simplified configuration for the integration between Lambda functions and API Gateway.

The API Gateway sends the entire request as an input to a backend Lambda function. Response-wise, API Gateway transforms the Lambda function output back to a frontend HTTP response.

3. Dependencies

We'll need the same dependencies as in the

AWS Lambda Using DynamoDB With Java article.

On top of that, we also need the JSON Simple library:

<dependency>
    <groupId>com.googlecode.json-simple</groupId>
    <artifactId>json-simple</artifactId>
    <version>1.1.1</version>
</dependency>

4. Developing and Deploying the Lambda Functions

In this section, we'll develop and build our Lambda functions in Java, we'll deploy it using AWS Console, and we'll run a quick test.

As we want to demonstrate the basic capabilities of integrating API Gateway with Lambda, we'll create two functions:

Function 1: receives a payload from the API, using a PUT method
Function 2: demonstrates how to use an HTTP path parameter or HTTP query parameter coming from the API

Implementation-wise, we'll create one RequestHandler class, which has two methods — one for each function.

4.1. ModelBefore we implement the actual request handler, let's have a quick look at our data model:

public class Person {

    private int id;
    private String name;

    public Person(String json) {
        Gson gson = new Gson();
        Person request = gson.fromJson(json, Person.class);
        this.id = request.getId();
        this.name = request.getName();
    }

    public String toString() {
        Gson gson = new GsonBuilder().setPrettyPrinting().create();
        return gson.toJson(this);
    }

    // getters and setters
}

Our model consists of one simple Person class, which has two properties. The only notable part is the Person(String) constructor, which accepts a JSON String.

4.2. Implementation of the RequestHandler

we'll create an implementation of the RequestStreamHandler interface:

public class APIDemoHandler implements RequestStreamHandler {

    private static final String DYNAMODB_TABLE_NAME = System.getenv("TABLE_NAME"); 
    
    @Override
    public void handleRequest(
      InputStream inputStream, OutputStream outputStream, Context context)
      throws IOException {

        // implementation
    }

    public void handleGetByParam(
      InputStream inputStream, OutputStream outputStream, Context context)
      throws IOException {

        // implementation
    }
}

As we can see, the RequestStreamHander interface defines only one method, handeRequest(). Anyhow, we can define further functions in the same class, as we've done here. Another option would be to create one implementation of RequestStreamHander for each function.

In our specific case, we chose the former for simplicity. However, the choice must be made on a case-by-case basis, taking into consideration such factors as performance and code maintainability.

We also read the name of our DynamoDB table from the TABLE_NAME environment variable. We'll define that variable later during deployment.

4.3. Implementation of Function

In our first function, we want to demonstrate how to get a payload (like from a PUT or POST request) from the API Gateway:

public void handleRequest(
  InputStream inputStream, 
  OutputStream outputStream, 
  Context context)
  throws IOException {

    JSONParser parser = new JSONParser();
    BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
    JSONObject responseJson = new JSONObject();

    AmazonDynamoDB client = AmazonDynamoDBClientBuilder.defaultClient();
    DynamoDB dynamoDb = new DynamoDB(client);

    try {
        JSONObject event = (JSONObject) parser.parse(reader);

        if (event.get("body") != null) {
            Person person = new Person((String) event.get("body"));

            dynamoDb.getTable(DYNAMODB_TABLE_NAME)
              .putItem(new PutItemSpec().withItem(new Item().withNumber("id", person.getId())
                .withString("name", person.getName())));
        }

        JSONObject responseBody = new JSONObject();
        responseBody.put("message", "New item created");

        JSONObject headerJson = new JSONObject();
        headerJson.put("x-custom-header", "my custom header value");

        responseJson.put("statusCode", 200);
        responseJson.put("headers", headerJson);
        responseJson.put("body", responseBody.toString());

    } catch (ParseException pex) {
        responseJson.put("statusCode", 400);
        responseJson.put("exception", pex);
    }

    OutputStreamWriter writer = new OutputStreamWriter(outputStream, "UTF-8");
    writer.write(responseJson.toString());
    writer.close();
}

As discussed before, we'll configure the API later to use Lambda proxy integration. We expect the API Gateway to pass the complete request to the Lambda function in the InputStream parameter.

All we have to do is to pick the relevant attributes from the contained JSON structure.

As we can see, the method basically consists of three steps:

Fetching the body object from our input stream and creating a Person object from that
Storing that Person object in a DynamoDB table
Building a JSON object, which can hold several attributes, like a body for the response, custom headers, as well as an HTTP status code

One point worth mentioning here: API Gateway expects the body to be a String (for both request and response).

As we expect to get a String as body from the API Gateway, we cast the body to String and initialize our Person object:

Person person = new Person((String) event.get("body"));

API Gateway also expects the response body to be a String:

responseJson.put("body", responseBody.toString());

This topic is not mentioned explicitly in the official documentation. However, if we have a close look, we can see that the body attribute is a String in both snippets for the request as well as for the response.

The advantage should be clear: even if JSON is the format between API Gateway and the Lambda function, the actual body can contain plain text, JSON, XML, or whatever. It is then the responsibility of the Lambda function to handle the format correctly.

We'll see how the request and response body look later when we test our functions in the AWS Console.

The same also applies to the following two functions.

4.4. Implementation of Function 2In a second step, we want to demonstrate how to use a path parameter or a query string parameter for retrieving a Person item from the database using its ID:

public void handleGetByParam(
  InputStream inputStream, OutputStream outputStream, Context context)
  throws IOException {

    JSONParser parser = new JSONParser();
    BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
    JSONObject responseJson = new JSONObject();

    AmazonDynamoDB client = AmazonDynamoDBClientBuilder.defaultClient();
    DynamoDB dynamoDb = new DynamoDB(client);

    Item result = null;
    try {
        JSONObject event = (JSONObject) parser.parse(reader);
        JSONObject responseBody = new JSONObject();

        if (event.get("pathParameters") != null) {
            JSONObject pps = (JSONObject) event.get("pathParameters");
            if (pps.get("id") != null) {
                int id = Integer.parseInt((String) pps.get("id"));
                result = dynamoDb.getTable(DYNAMODB_TABLE_NAME).getItem("id", id);
            }
        } else if (event.get("queryStringParameters") != null) {
            JSONObject qps = (JSONObject) event.get("queryStringParameters");
            if (qps.get("id") != null) {

                int id = Integer.parseInt((String) qps.get("id"));
                result = dynamoDb.getTable(DYNAMODB_TABLE_NAME)
                  .getItem("id", id);
            }
        }
        if (result != null) {
            Person person = new Person(result.toJSON());
            responseBody.put("Person", person);
            responseJson.put("statusCode", 200);
        } else {
            responseBody.put("message", "No item found");
            responseJson.put("statusCode", 404);
        }

        JSONObject headerJson = new JSONObject();
        headerJson.put("x-custom-header", "my custom header value");

        responseJson.put("headers", headerJson);
        responseJson.put("body", responseBody.toString());

    } catch (ParseException pex) {
        responseJson.put("statusCode", 400);
        responseJson.put("exception", pex);
    }

    OutputStreamWriter writer = new OutputStreamWriter(outputStream, "UTF-8");
    writer.write(responseJson.toString());
    writer.close();
}

Again, three steps are relevant:

We check whether a pathParameters or an queryStringParameters array with an id attribute are present.
If true, we use the belonging value to request a Person item with that ID from the database.
We add a JSON representation of the received item to the response.

The official documentation provides a more detailed explanation of input format and output format for Proxy Integration.

4.5. Building CodeAgain, we can simply build our code using Maven:

mvn clean package shade:shade

The JAR file will be created under the target folder.

4.6. Creating the DynamoDB TableWe can create the table as explained in AWS Lambda Using DynamoDB With Java.

Let's choose Person as table name, id as primary key name, and Number as type of the primary key.

4.7. Deploying Code via AWS ConsoleAfter building our code and creating the table, we can now create the functions and upload the code.

This can be done by repeating steps 1-5 from the AWS Lambda with Java article, one time for each of our two methods.

Let's use the following function names:

StorePersonFunction for the handleRequest method (function 1)
GetPersonByHTTPParamFunction for the handleGetByParam method (function 2)

We also have to define an environment variable TABLE_NAME with value “Person”.

4.8. Testing the FunctionsBefore continuing with the actual API Gateway part, we can run a quick test in the AWS Console, just to check that our Lambda functions are running correctly and can handle the Proxy Integration format.

Testing a Lambda function from the AWS Console works as described in AWS Lambda with Java article.

However, when we create a test event, we have to consider the special Proxy Integration format, which our functions are expecting. We can either use the API Gateway AWS Proxy template and customize that for our needs, or we can copy and paste the following events:

For the StorePersonFunction, we should use this:

{
    "body": "{\"id\": 1, \"name\": \"John Doe\"}"
}

As discussed before, the body must have the type String, even if containing a JSON structure. The reason is that the API Gateway will send its requests in the same format.

The following response should be returned:

{
    "isBase64Encoded": false,
    "headers": {
        "x-custom-header": "my custom header value"
    },
    "body": "{\"message\":\"New item created\"}",
    "statusCode": 200
}

Here, we can see that the body of our response is a String, although it contains a JSON structure.

Let's look at the input for the GetPersonByHTTPParamFunction.

For testing the path parameter functionality, the input would look like this:

{
    "pathParameters": {
        "id": "1"
    }
}

And the input for sending a query string parameter would be:

{
    "queryStringParameters": {
        "id": "1"
    }
}

As a response, we should get the following for both cases methods:

{
  "headers": {
    "x-custom-header": "my custom header value"
  },
  "body": "{\"Person\":{\n  \"id\": 88,\n  \"name\": \"John Doe\"\n}}",
  "statusCode": 200
}

Again, the body is a String.

5. Creating and Testing the APIAfter we created and deployed the Lambda functions in the previous section, we can now create the actual API using the AWS Console.

Let's look at the basic workflow:

Create an API in our AWS account.
Add a resource to the resources hierarchy of the API.
Create one or more methods for the resource.
Set up the integration between a method and the belonging Lambda function.

We'll repeat steps 2-4 for each of our two functions in the following sections.

5.1. Creating the APIFor creating the API, we'll have to:

Sign in to the API Gateway console at https://console.aws.amazon.com/apigateway
Click on “Get Started” and then select “New API”
Type in the name of our API (TestAPI) and acknowledge by clicking on “Create API”

Having created the API, we can now create the API structure and link it to our Lambda functions.

5.2. API Structure for Function 1The following steps are necessary for our StorePersonFunction:

Choose the parent resource item under the “Resources” tree and then select “Create Resource” from the “Actions” drop-down menu. Then, we have to do the following in the “New Child Resource” pane:
- Type “Persons” as a name in the “Resource Name” input text field
- Leave the default value in the “Resource Path” input text field
- Choose “Create Resource”
Choose the resource just created, choose “Create Method” from the “Actions” drop-down menu, and carry out the following steps:
- Choose PUT from the HTTP method drop-down list and then choose the check mark icon to save the choice
- Leave “Lambda Function” as integration type, and select the “Use Lambda Proxy integration” option
- Choose the region from “Lambda Region”, where we deployed our Lambda functions before
- Type “StorePersonFunction” in “Lambda Function”
Choose “Save” and acknowledge with “OK” when prompted with “Add Permission to Lambda Function”

5.3. API Structure for Function 2 – Path ParametersThe steps for our retrieving path parameters are similar:

Choose the /persons resource item under the “Resources” tree and then select “Create Resource” from the “Actions” drop-down menu. Then, we have to do the following in the New Child Resource pane:
- Type “Person” as a name in the “Resource Name” input text field
- Change the “Resource Path” input text field to “{id}”
- Choose “Create Resource”
Choose the resource just created, select “Create Method” from the “Actions” drop-down menu, and carry out the following steps:
- Choose GET from the HTTP method drop-down list and then choose the check mark icon to save the choice
- Leave “Lambda Function” as integration type, and select the “Use Lambda Proxy integration” option
- Choose the region from “Lambda Region”, where we deployed our Lambda functions before
- Type “GetPersonByHTTPParamFunction” in “Lambda Function”
Choose “Save” and acknowledge with “OK” when prompted with “Add Permission to Lambda Function”

Note: it is important here to set the “Resource Path” parameter to “{id}”, as our GetPersonByPathParamFunction expects this parameter to be named exactly like this.

5.4. API Structure for Function 2 – Query String ParametersThe steps for receiving query string parameters are a bit different, as

we don't have to create a resource, but instead have to create a query parameter for the id parameter:

Choose the /persons resource item under the “Resources” tree, select “Create Method” from the “Actions” drop-down menu, and carry out the following steps:
- Choose GET from the HTTP method drop-down list and then select the checkmark icon to save the choice
- Leave “Lambda Function” as integration type, and select the “Use Lambda Proxy integration” option
- Choose the region from “Lambda Region”, where we deployed our Lambda functions before
- Type “GetPersonByHTTPParamFunction” in “Lambda Function”.
Choose “Save” and acknowledge with “OK” when prompted with “Add Permission to Lambda Function”
Choose “Method Request” on the right and carry out the following steps:
- Expand the URL Query String Parameters list
- Click on “Add Query String”
- Type “id” in the name field, and choose the check mark icon to save
- Select the “Required” checkbox
- Click on the pen symbol next to “Request validator” on the top of the panel, select “Validate query string parameters and headers”, and choose the check mark icon

Note: It is important to set the “Query String” parameter to “id”, as our GetPersonByHTTPParamFunction expects this parameter to be named exactly like this.

5.5. Testing the APOur API is now ready, but it's not public yet.

Before we publish it, we want to run a quick test from the Console first.

For that, we can select the respective method to be tested in the “Resources” tree and click on the “Test” button. On the following screen, we can type in our input, as we would send it with a client via HTTP.

For StorePersonFunction, we have to type the following structure into the “Request Body” field:

{
    "id": 2,
    "name": "Jane Doe"
}

For the GetPersonByHTTPParamFunction with path parameters, we have to type 2 as a value into the “{id}” field under “Path”.

For the GetPersonByHTTPParamFunction with query string parameters, we have to type id=2 as a value into the “{persons}” field under “Query Strings”.

5.6. Deploying the APIUp to now, our API wasn't public and thereby was only available from the AWS Console.

As discussed before, when we deploy an API, we have to associate it with a stage, which is like a snapshot in time of the API. If we redeploy an API, we can either update an existing stage or create a new one.

Let's see how the URL scheme for our API will look:

https://{restapi-id}.execute-api.{region}.amazonaws.com/{stageName}

The following steps are required for deployment:

Choose the particular API in the “APIs” navigation pane
Choose “Actions” in the Resources navigation pane and select “Deploy API” from the “Actions” drop-down menu
Choose “[New Stage]” from the “Deployment stage” drop-down, type “test” in “Stage name”, and optionally provide a description of the stage and deployment
Trigger the deployment by choosing “Deploy”

After the last step, the console will provide the root URL of the API, for example, https://0skaqfgdw4.execute-api.eu-central-1.amazonaws.com/test.

5.7. Invoking the Endpoint As the API is public now,

we can call it using any HTTP client we want.

With cURL, the calls would look like as follows.

StorePersonFunction:

curl -X PUT 'https://0skaqfgdw4.execute-api.eu-central-1.amazonaws.com/test/persons' \
  -H 'content-type: application/json' \
  -d '{"id": 3, "name": "Richard Roe"}'

GetPersonByHTTPParamFunction for path parameters:

curl -X GET 'https://0skaqfgdw4.execute-api.eu-central-1.amazonaws.com/test/persons/3' \
  -H 'content-type: application/json'

GetPersonByHTTPParamFunction for query string parameters:

curl -X GET 'https://0skaqfgdw4.execute-api.eu-central-1.amazonaws.com/test/persons?id=3' \
  -H 'content-type: application/json'

6. Conclusion In this article, we had a look how to make AWS Lambda functions available as REST endpoints, using AWS API Gateway.

We explored the basic concepts and terminology of API Gateway, and we learned how to integrate Lambda functions using Lambda Proxy Integration.

Finally, we saw how to create, deploy, and test an API

AWS EventBridge for scheduling

2023-01-09T17:15:00.001+02:00

Serverless EventBridge linked system to send emails, texts and push notifications using Python Lambda and Cloudformation

Amazon’s EventBridge is one of the three main messaging infrastructure components on the AWS platform along with the SimpleQueueService (SQS) and the SimpleNotificationService (SNS). EventBridge’s architecture is essentially that of an event bus – it is a serverless event bus that operates at massive scale and can be used to architect applications work on the concept of publishing and subscriptions. Messages published to EventBridge can be subscribed to and EventBridge is able to deliver them to a variety of targets in real time. A key benefit of this kind of architecture is the disconnected nature of the subscribers – which makes it very easy to add or replace component services with minimal disruption to the overall platform.

Eventbridge’s features and integrations go way beyond simple publish and subscribe and it provides direct integrations to a variety of external sources and can also be configured to do cross AWS account message delivery. However for the scope of this article – we will focus on working with the core feature of EventBridge to build our own custom serverless event driven application. In doing so we will demonstrate how to both setup an EventBridge event bus and work with the EventBridge event bus using Lambdas and Python with the boto3 SDK and also demonstrate how to define the serverless infrastructure for our application using AWS Cloudformation.

The example application is going to be an event driven notification system to send emails, texts, push notifications with different handlers picking up the appropriate event – this example should be able to serve as a baseline reference implementation that can be used for your own specific functional requirements that can benefit from EventBridge. The final integrated serverless notification system will be as shown in the architecture diagram that is the feature image above – we will describe the workflow in more detail in the next section.

Outlining the Notification System

The API Gateway is the entry endpoint to the system where notification requests can be sent from upstream systems that may be client side UIs or other systems. While this example will use an Http API Gateway for simplicity, there are several options available including the excellent AppSync service which I use in this article . And if your component is not going to be invoked by any direct client side input – perhaps on the basis of other kind of data triggers – then the API endpoint can be skipped entirely and the Lambda that is the target of the endpoint can be invoked directly.

The Event Publisher Lambda will publish specific event types – texts, emails or push event types based on the incoming request to the EventBridge event bus. The publisher is agnostic to the subscribers and will simply publish a payload with a specific event type – the subscribers will register with EventBridge to request specific events. In this case, we will have a Lambda handler for each event type.

Emails will be sent out using AWS SES – SimpleEmailService, texts will be sent out using SNS – SimpleNotificationService and mobile push notifications via Google Firebase.

The entire architecture will be defined as infrastructure-as-code using a Cloudformation template – where we will also be defining the actual EventBridge event bus. It is worth noting here that Cloudformation makes the wiring of Lambda targets from EventBridge exceedingly trivial compared to manually configuring stuff in the AWS console which I am not a fan of doing. By simply defining EventBridge Event types to the Cloudformation Function Resources, all the magic gets done for you when you deploy the stack. We will be demonstrating this in yaml the following sections.

We will define and code out all of this piece by piece in the rest of the sections below

Defining the EventBridge Event Bus

Just before we start defining our Cloudformation stack – a note to point out a couple of articles I have written than might be of use to you in case you are not familiar with all this. If you are – please ignore these two links below and review the yaml code directly.

To see how to setup AWS SAM to work with Cloudformation – please see this article.

For a detailed write up of working with Lambdas – specifically Python based Lambdas – and Cloudformation – take a look at this post.

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: Serverless EventBridge Notification System Example

Globals:
  Function:
    Architectures:
      - arm64
    Runtime: python3.9
    Timeout: 300

Resources:

  EventBridgeEventBus:
    Type: AWS::Events::EventBus
    Properties:
      Name: "notification-eventbus"

A resource of type AWS::Events::EventBus with a custom name and we have our EventBridge Event Bus all set and ready to go. Well not till we deploy it, but we can now use this reference in the template when we define subscription filters in the next few sections. The globals section defines the common properties for our Lambdas – since all our Lambdas are going to be Python and we want them to use arm64 – it makes sense to define this globally instead of individually.

Defining the API Gateway backed up by the Event Publisher Lambda

First lets define the Lambda yaml before we code out the Lambda in Python where will be using the boto3 SDK to publish messages to the event bus we defined in the previous section.

EventPublisherLambda:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: ./event-publisher/
      Handler: event-publisher.event_handler
      Description: Publish notifications to the event bus with their type
      FunctionName: event-publisher
      Policies:
        - AmazonEventBridgeFullAccess
      Environment:
        Variables:
          EVENTBUS_NAME: !Ref EventBridgeEventBus
      Events:
        HttpAPIEvent:
          Type: HttpApi
          Properties:
            Path: /notifications
            Method: post
            PayloadFormatVersion: "2.0"

If you are using your own names and definitions, ensure the codeuri and handler properties match the directory and Python file structure. The Lambda is fronted by an Http API Gateway endpoint which is defined in the events section. Cloudformation will generate a random url and define a route to “/notifications” which will send traffic to our Lambda. We are passing the name of the event bus to our Lambda as an environment variable since we will need to publish to it.

Lastly we are providing an IAM policy based access to EventBridge for this Lambda. It is required otherwise the publish actions will fail – however it is possible to tailor access more restrictively to the Lambda by using more fine grained policy definitions, but it isn’t really needed as long as your Lambda limits the actions it does on the bus and it is fine to use the provided AWS SAM utility policy.

Coding the Event Publisher Lambda in Python

We are about to code one of the key components of the notification system, so lets review how the contract is going to behave.

The goal is for the Lambda to publish event payloads based on incoming requests. Keeping it simple we just need three inputs from the upstream systems – recipient – email address, phone number or push topic, message – simple text, and destination – email, text or push as the valid values.

The event publisher Lambda is agnostic to all the implementation details and is simply going to publish it to the event bus for a handler to pick up and handle as needed. In order to allow subscribers to do so – we will make use of the EventBridge payload structure that looks like this:

eventbridge_event = {
            'Time': start_time, #time of event
            'Source': "event-publisher",
            'Detail': json.dumps(event), 
            'DetailType': destination, #email, text, push
            'EventBusName': eventbus
        }

Specifically subscribers can use the the Source and DetailType properties of EventBridge to set their specific subscription filters. In our case – we will use the contract and simply pass the destination from the API Gateway input.

EventBridge allows for fairly complex subscription definitions – but my personal advice – keep things simple in your design. I mean that is always good advice isn’t it, and DetailType should be sufficient for filtering out the vast majority of use cases except in very complex payloads – where simplicity is already lost.

So to summarize – the Lambda will accept recipient, message and destination as inputs from the API Gateway – create a payload event with these values – set the fields above in the eventbridge event – and publish it.

from datetime import datetime
import boto3
import json
import os

eventbus = os.environ["EVENTBUS_NAME"]
eventbridge = boto3.client("events")


def event_handler(event, context):

    # Expecting destination, recipient, message in event
    event = json.loads(event["body"])
    destination = event["destination"]

    start_time = datetime.now()

    eventbridge_event = {
        'Time': start_time,
        'Source': "event-publisher",
        'Detail': json.dumps(event),
        'DetailType': destination,
        'EventBusName': eventbus
    }

    response = eventbridge.put_events(
        Entries=[
            eventbridge_event
        ]
    )
    
    print(response)

As you can see from the contract, EventBridge supports publishing multiple events, in a single call – but our design will simply publish one event at a time.

Subscribing the Text Handler Lambda to the Event Bus

Just like the above section – lets first define the Lambda in the cloudformation yaml before coding it in Python to demonstrate how to handle the EventBridge invocation.

As mentioned earlier – requesting a subscription filter from EventBridge for DetailType “text” from Source “event-publisher” – as defined in the previous section is exceedingly simple with cloudformation – all we need to do is define an EventBridgeRule Event type and provide the subscription pattern as demonstrated below.

TextEventHandlerLambda:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: ./text-handler/
      Handler: text-handler.event_handler
      Description: Subscribe and send texts via SNS
      FunctionName: text-handler
      Policies:
        - AmazonSNSFullAccess
      Events:
        EventBridgeTextEvents:
          Type: EventBridgeRule
          DependsOn: EventBridgEventBus
          Properties:
            EventBusName: !Ref EventBridgEventBus
            Pattern:
              source:
                - event-publisher
              detail-type:
                - text

Coding the Text Handler to send texts via SNS

Take a look at this post for more details about the setting up and send SMS Texts via SNS.

Below I am simply going to demonstrate the code without the specifics of verifying numbers and such which I cover in that article I linked above. When EventBridge invokes our text-handler Lambda for “text”, DetailType, we will have access to the message we published from the publisher in the event payload.

eventbridge_event = {
        'Time': start_time,
        'Source': "event-publisher",
        'Detail': json.dumps(event),
        'DetailType': destination,
        'EventBusName': eventbus
    }

So it can simply be extracted very easily from the “Detail” object as shown below and a text message sent to the recipient using SNS.

import boto3

sns = boto3.resource('sns')


def event_handler(event, context):
	
    text_event = event["detail"]
    recipient = text_event("recipient")
    message = text_event("message")
    
	response = sns.publish(
            PhoneNumber=recipient,
            Message=message
        )

    message_id = response["MessageId"]
    print(message_id)

Subscribing the Email & Push Handlers

As you probably surmised – the yaml definition for the email and push subscription Lambdas are going to be almost exactly the same as the yaml for the text-handler – only the EventBridgeRule filter varies and of course the function names and code locations.

EmailEventHandlerLambda:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: ./email-handler/
      Handler: email-handler.event_handler
      Description: Subscribe and send emails via SES
      FunctionName: email-handler
      Policies:
        - Statement:
            - Effect: Allow
              Action:
                - "ses:SendEmail"
              Resource: "*"
      Events:
        EventBridgeEmailEvents:
          Type: EventBridgeRule
          DependsOn: EventBridgEventBus
          Properties:
            EventBusName: !Ref EventBridgEventBus
            Pattern:
              source:
                - event-publisher
              detail-type:
                - email

PushEventHandlerLambda:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: ./push-handler/
      Handler: push-handler.event_handler
      Description: Subscribe and send push notifications via Firebase
      FunctionName: push-handler
      Events:
        EventBridgePushEvents:
          Type: EventBridgeRule
          DependsOn: EventBridgEventBus
          Properties:
            EventBusName: !Ref EventBridgEventBus
            Pattern:
              source:
                - event-publisher
              detail-type:
                - push

Coding the Email Handler Lambda to send emails via SES

Once again, for more details and caveats of working with SES and verified domains and config sets and all – please look at this article here.

Just focusing on the Python code – see below – we are extracting the recipient details from the EventBridge payload as we did for the text handler Lambda

import os
import boto3
import json
from datetime import datetime

from_email = "email@mydomain.com"
client = boto3.client('ses')


def event_handler(event, context):
    
    email_event = event["detail"]
    recipient = email_event("recipient")
    message = email_event("message")

    body_html = f"""<html>
        <head></head>
        <body>
          <p>{{message}}</p> 
        </body>
        </html>
                    """
    
    body_html = body_html.replace("{{message}}", message)

    email_message = {
        'Body': {
            'Html': {
                'Charset': 'utf-8',
                'Data': body_html,
            },
        },
        'Subject': {
            'Charset': 'utf-8',
            'Data': message,
        },
    }

    client.send_email(
        Destination={
            'ToAddresses': [recipient],
        },
        Message=email_message,
        Source=from_email,
    )

I am skipping the Python code demonstration of push notifications – this is a less common use case and requires a lot of prerequisites outside of AWS like having your own App and a Firebase account. If you want to see how to send push notifications using the Firebase Python SDK – I am going to ask you to ask you to please refer to this article and repeat what was demonstrated for the email and text Lambdas – same as the case for the other two Lambdas, extract the details and modify the code demonstrated in the linked article to handle this specific case.

Concluding

I want to reiterate some of the key benefits of using EventBridge – as an architecture design – the decoupled nature of the components make for seamless extensibility or removal of components – change the publisher implementation and simply ensure subscribers continue to get their DetailType from the new component. Add or remove subscribers as you need to seamlessly, the publishers are agnostic to this. For example, should you need to send another type of text message handler using a vendor separate from SNS – then simply implement a new handler and add a new type for this. Outside of the design pattern benefits, EventBridge has other feature benefits like cross account event delivery and message replays and the like that might be of use to your specific use case. The EventBridge Schema Registry is another cool feature that might be of use if you work in a large organization and would like to discover schemas that EventBridge is aware of that you could subscribe to seamlessly.

So hopefully this article and project helped a little with implementing your use case. If you are extending from this baseline design, some other obvious next steps to consider are incorporating a database like Dynamodb for record keeping of your message flow and also spending time designing a possibly more complex event driven flow than this relatively liner design here. This could also be where you might need to make more use of the EventBridge rule pattern matching features beyond the example used in this article. In any case, good luck with whatever you plan to work on with EventBridge.

Solve windows 8 restart problem

2013-10-10T10:01:00.002+02:00

Windows 8 have a problem of restarting , this problem is so bad to any user .
for example, when you download a large file the pc will restart and cut the download session ,so
directly , here's the solution steps :
1- open ( power options ) by typing "power" in the search of settings . or,If you are on Desktop, move your cursor to top-right corner of screen to access new Charms Bar. Now click on Search option and type power in search box.

2-

3- in the bottom of the new screen you will find (Enable hybrid boot ) or ( Tern on fast-startup ) > un mark it .

if you didn't find it press on (change settings that are currently unavailable ) and it will appear .

Save changes ,,
no more restart

Free sms to any place in the world

2012-03-31T22:29:00.004+02:00

This site offers more free sms 100% try it

Click Here

Unlock zte , zte mf180 , Huawei Modem,maxon,micromax.

2011-08-27T15:14:00.006+02:00

Download links are changed & work
Unlock zte modems , huawei modems
Tested & work 100% on zte mf180 and work on the earlier versions

the program is cracked and don't need a serial or crack.

steps :

Before unlocking process you should put another sim card of another company in the modem it will prompt you to enter unlock code close it and

follow steps :

1-select manufacturer

Huawei or zte ....etc

2-select model

zte mf100 ,zte mf 622+ ,Huawei k4505 or choose Auto Detect if the model of the modem isn't listed
-->

3-press detect card to detect the modem

4- choose from the right list unlocking ( unlock).

your modem should be unlocked .

link of the program: ( the link and password changes)

password: shababtech

RapidShare :https://www.rapidshare.com/files/2715126101/Dccrap.rar
Zshare: http://www.zshare.net/download/9949548902b7e6a2/
MegaShare: http://www.megashare.com/4069028
DepositFiles :http://depositfiles.com/files/hg55m1imf

Multiuploadhttp://www.mirrorcreator.com/files/6T8UJ95B/Dccrap.rar_links

-->

The links may change please don't publish it outside our blog.

intel i845g LAN driver

2010-11-25T23:19:00.004+02:00

This Driver for Intel i845g LAN driver

The driver worked on IBM REV 1.5 Board

IBM rev 1.5 Lan Driver
Download the driver direct link

Click Here

Internet download manager 5.18 Build 8 full

2010-03-14T15:13:00.015+02:00

IDM internet download manager full and silent install

Strongest program for download
Support download resume

Download internet download manager silent install and setup

megaupload

http://www.megaupload.com/?d=4HGWEV8A

************************************

كيفية عمل ايميل بسهولة بالصور

2009-12-12T22:43:00.006+02:00

بسم الله الرحمن الرحيم

كيفية عمل ايميل علي الياهو بالصور خطوة خطوة

اولا قم بالدخول الي صفحة التسجيل بالضغط هنا

>
انظر الي الصورة ثم اتبع التعليمات

1) قم بكتابة اسمك الاول في خانة الاسم الاول ثم اكتب اسم العائلة في خانة الاسم الاخير

2) في خانة النوع قم باختيار male ذكر // او female انثي

3) في خانة تاريخ الميلاد قم بكتابة تاريخ ميلادك

4) قم باختيار محل اقامتك (دولتك)

5) بجانب الرمز البريدي (zip code) قم بكتابة اي 5 ارقام وليكن 01120

6) الميل وهذه اهم خطوة في خانة الميل اكتب الميل الذي تريده بشرط الا يحتوي علي مسافات مثل tato man هذا خطأ و الصحيح

tatoman او tato_man

ثم اضغط علي check لتعرف هل هو متوفر ام لا

7) خانة الباسوورد قم فيها بكتابة الرقم السري للدخول علي الميل

8) اعد كتابة نفس الرقم السري

9) ايميل اخر : اذا كنت تمتلك ايميل اخر سواء ياهو او هوتميل او غيره قم بكتابته واذا لم تكن تملك اتركها فارغة

10) السؤال الاول قم باختيار اي سؤال وكتابة اي اجابة تذكرك بالرقم السري اذا نسيته

11) السؤال الثاني قم باختيار اي سؤال وكتابة اي اجابة تذكرك بالرقم السري اذا نسيته

12) اكتب في هذه الخانة الارقام او الحروف الظاهرة بالصورة اسفلها

13) بعد ان انتهينا تأكد من المعلومات التي ادخلتها

14) قم بالضغط علي create my account

15) ان كان هناك اي خطأ فستجد كلمة بالاحمر بجوار الخانات الخاطئة قم بتصحيحها وقم بالضغط مرة اخري علي

create my account

تأتي هذه الصفحة بعد الانتهاء

انت الان تمتلك ايميل علي الياهو مبارك عليك

making eathernet cable

2009-12-04T02:39:00.002+02:00

Ethernet cables are essentially the lifeline of our home networks, and our internet. Almost every home network uses ethernet cables to connect either their modem to their router or their routers to their computers. Ethernet cables are especially important for those users who are still on wired networks, and haven't made the jump to wireless yet. For those of you that have had to go out and purchase ethernet cables in the past know that these cables do not come cheap for anything over 10 feet or so. If you have to stretch it up to 20+ feet the price increase is exponential, when in fact, it doesn't really cost that much more to make a longer cable. In today's post we're going to show you how to make your own ethernet cable.

Materials For Making Ethernet Cables

Wire Cutters/Strippers- I'm sure you have atleast one pair laying around, if you followed my article on how to assemble the ultimate PC toolkit you should have a pair in your amazing PC toolkit.
RJ45 Crimping Tool- This is used for crimping or "terminating" the ends of the cable so they stay attached, you can get these at a radioshack-type store or save yourself some money and get them off Amazon for cheap.
Network Cable Tester- This tool is option, but it helps alot if you want to make sure the cables you're making are working correctly, and to test cables if you ever think you might have a bad cable. These can also be found on Amazon for relatively decent prices.
CAT5 Ethernet Cable- You'll need this stuff to make the cables out of, you can get this at Home Depot or Lowe's, it'll usually come in a box, and it's just the cable with no ends on it.
RJ45 Connectors- Last but not least, you'll need RJ45 connectors. These can be found at a Radioshack-type store or on Amazon, if you can't tell I really do a lot of shopping on Amazon.

Ethernet Cable Making Instructions

First, you'll want to measure out how long you want your cable to be, just so you don't have all this extra cable slack, or you don't make a cable too short, that would suck. Then, add 5 inches to that length so you have something to work with when terminating the cable ends.
Pull out your wire strippers and strip about an inch off of the cable, now you'll want to un-twist the cables all the way to the rubber shield. You'll want to make sure there is a few millimeters of copper exposed so they can make contact with the RJ-45 connector
What you want to do is make sure each wire is in the correct position before you put on the RJ-45 connector. For normal ends it should be white-orange, orange, white-green, blue, white-blue, green, white-brown, brown, and this should be from look at the top of the connector, the bottom of the connector is the part with the plastic tab. For crossover cables the order is white-green, green, white-orange, blue, white-blue, orange, white-brown, brown.
Put on the RJ-45 connector, and make sure the copper ends are making contact with the metal plates in the RJ-45 connector, if they aren't go back and try organizing the wires so they all connect.
Put it in the crimping tool and crimp it, now you have one end terminated.
For the other end repeat steps 2-6.
Plug your ethernet cable into the tester and see if it all the lights light up green, if they do then you're good, and you can get to making your other cables, if they don't you'll have to cut off the RJ-45 connector and reterminate your ends with a new connector. At first it's hard to get the hang of it, but in no time you'll be making cables like Speedy Gonzales.

I also found these a build your own network cable kit on Amazon that look like a really good deal. For less than $60 on most kits you can get everything you need to make your network cable, including all the tools, the RJ-45 connectors, and you also get 100-500 Feet of Ethernet Cable for all of your networking needs.

عمل شبكة محلية بالصور

2008-12-27T19:28:00.005+02:00

السلام عليكم ورحمة الله وبركاته

درس اليوم درس جميل جدا وبصراحة كتير جدا بيسأل عليه وعشان كده انا هحاول افصل فيه

كيفية عمل شبكة محلية (lan) والجماعة بتوع الفرنجة بيسموها local area network

والموضوع هيكون علي شكل اسئلة لانه بيكون اسهل

اولا ما هي الشبكة المحلية :

بالبلدي كده لو انت معاك اتنين تلاتة اصحابك سواء في نفس البيت او في بيوت تانية

وعاوز تعمل شبكة نت بينك وبينهم هيا دي الشبكة المحلية وسيبك من الرغي الكتير وافهمها كده

ولم احتاج الي انشاء شبكة محلية :

هقولك يا عم

تخيل كده لو انت مشترك في نت وبتدفع لوحدك وعاوز تخلي حد يشيل معاك الليلة طبعا هتحتاج الشبكة المحلية

ولو محتاج انك تعمل مشاركة الملفات يعني ترسل وتستقبل ملفات من والي جهازك واجهزتهم يبقي هتعمل شبكة محلية

وتخيل لو انت وعمك وابن عمك واتنين تلاتة اصحابك بتستخدموا طابعة واحدة بس مش يبقي احسن لو محتاج كده يبقي هتعمل شبكة محلية

ما مدي قدرة الشبكة علي تحمل عدد المشتركين

شوف يا عم من حيث عدد المشتركين مفيش اي خوف يعني ده علي حسب سرعتك مش سرعتك انت لأ سرعة النت

يعني علي راي المثل " علي أد لحافك مد رجليك" او " علي أد سرعتك زود المشتركين"

يعني انت وشطارتك زود السرعة وزود المشتركين ومش هتخسر ان شاء الله

ما هي المسافة بيني وبين كل مشترك

شوف بقي واحدة واحدة وهوضحلك في الشرح

وهنا السؤال

كيفية انشاء الشبكة المحلية بأفضل الاحوال وبأقل التكاليف

هناخدها واحدة واحدة كده وبراحتنا خالص ويا ريت تقوم تعمل فنجان قهوة او كباية شاي بند خمسين عشان تركز

الاجهزة المطلوبة :

راوتر __ HUP او سويتش __اسلاك انترنت __ اراجة __splitter__

RJ45 ( سبلتر) او فلتر __ اكتر من جهاز ( طب ما هو طبعا )

هناخد كل جهاز واحدة واحدة كده ووظيفة كل جهاز

الراوتر : الراوتر ده هو اللي بيستقبل الاشارة الاتية من السلك الرئيسي ( الكبس بتاع التليفون ) يعني لازم الاشارة تعدي عليه الاول

وطبعا فيه منه انواع كتير ونصيحة من اخوك احسن نوع وبسعر معقول D-LINK وطبعا فيه نوع واحد بورت واتنين بورت وتلاتة

براحتك علينا يا باشمهندس ايه هو البورت ده:

ماشي يا عم انا هقول لك البورت ده هو المنفذ اللي بيطلع منه اسلاك لبقية الاجهزة

يبقي كده الراوتر هيدخل له سلك وهيخرج منه اسلاك حسب عدد البورتات ( المنافذ) اللي خارجة من الراوتر

يعني ايه المطلوب مني يا باشمهندس :

شوف يا حاج اشتري راوتر D LINK واحد بورت بس خد بالك

استني استني واحد بورت ايه وانا عندي مشتركين كتير وبعدين اخد بالي من ايه هو من اولها هتخوفني

اشتري بس واحد بورت وانا هقول لك تعمل ايه وانا مش عاوز اخوفك ولا حاجة بس عاوز انبهك علي نقطة مهمة

خد بالك الراوترات فيه كتير منها مضروب والدي لينك بردو نزل منه مضروب يعني لازم يكون اصلي

وانا هعرف منين انه اصلي

شوف يا عم لازم تكون واثق من المكان ومن السعر وانا ممكن اخدمك في حاجة زي دي

اه هو ده اللي كنت خايف منه انت عاوز تعمل لنفسك شغل :

لا تخاف ولا حاجة مصر مليانة محلات جميلة جدا وفيها راوترات اصلي تقدر تشتري منها ولو عاوز مساعدة كلمني بس

وانا هقولك من غير مقابل خالص

وده شكل الراوتر

خلاص خلصنا من الراوتر خد لك شوية شاي كده وروق

السويتش او HUP :

مشهور في مصر باسم السويتش والمطلوب منك سويتش فيه بورتات كتير علي عدد المشتركين وده امره سهل وانواعه كتيرة

ورخيصة

ايوة السلك ده هيدخل عالسويتش وبعد كده هناخد من السويتش وصلات للمشتركين

ودي صورة السويتش

والحاجات التانية ما وظيفتها

ناخد نظرة عامة كده عالموضوع : كبس تليفون طالع منه سلك والسلك داخل علي راوتر والراوتر طالع منه سلك داخل علي سويتش

والسويتش طالع منه اسلاك موزعة للمشتركين بس كده

بس لازم السلك يكون فيه حاجة تدخل في السويتش ودي بنسميها RJ وبنركبه في السلك بــ ( الاراجة) وبعد التركيب ده شكلها

والتركيب بيكون بطريقة معينة ممكن وانت بتشتري السلك تقول للبياع يأرجهولك وتريح دماغك

او ممكن تأرجه بنفسك وهقول لك ازاي

السلك فيه 8 اسلاك صغيرة ( بني , اخضر , ازرق , برتقالي , ابيض بني , ازرق ابيض , اخضر ابيض , برتقالي ابيض)

وبتتركب بترتيب معين علي التوالي ( بني , ابيض بني , اخضر , ازرق ابيض , ازرق , اخضر ابيض , برتقالي , برتقالي ابيض )

وبتتركب طبعا بالاراجة زي ما قلنا وكل السلوك بتكون بالترتيب ده تبع مايكروسوفت ما قررت

بتضع السلوك بالترتيب ده في الارجي (لها مكان طبعا) وبعدين بتضغط عليها بواسطة الاراجة حتي تتثبت في الارجي

وده شكل الاراجة

وفائدة السبلتر ايه

فائدة السبلتر انك عشان تشغل التليفون بتدخل الخط الرئيسي علي اسبلتر الاول وبعد كده بيطلع

من الاسبلتر سلكين

سلك للتليفون وسلك للراوتر والاسبلتر صغير وانواعه كتير بس كل ما كان النوع انضف كل ما كان احسن

لأن الاسبلتر بينقي الخط يمعني انه بيصفي الاشارة للتليفون وللنت

ودي صورة اسبلتر

وبكده يبقي تمام

فاضل انك توصل سلوك من السويتش لجهازك ولاجهزة المشتركين وفاضل نقطة صغيرة وهي

تهيئة جهازك واجهزة المشتركين

وهي سهلة جدا

طبعا جهازك له IP هتخلي كل واحد من المشتركين يعمل IP لنفسه بس يغير في اخر رقم ويحط نفس القيم اللي عندك

عدا الـIP

يعني لو عندك في جهازك IP

192.168.1.2 اللي بعدك يعمل اي بي 192.168.1.3 وهكذا والقيم الاخري يضعها زيك بالظبط

وبعدين كل واحد يعمل الخطوة دي علي جهازه :

كليك يمين علي My Computer

properties

computer name

change

بجانب خانة اسم الكمبيوتر هسمي الكمبيوتر اسم

وبجانب خانة workgroup هسمي المجموعة اسم وليكن ISGROUP

افضل سلسلة تعليمية للجافا وباللغة العربية

2008-11-28T13:07:00.001+02:00

السلام عليكم ورحمة الله وبركاته

اولا انا بهدي السلسلة دي للجماعة زمايلنا طلبة الحاسبات والمعلومات(هندسة البرمجيات قريبا) ان شاء الله

سلسلة تعليم الجافا باللغة العربية

السلسلة دي قوية جدا وهي من تأليف الاستاذ / عماد الدين زغلول

السلسلة سهلة جدا ومشوقة وشرح ولا اروع

السلسة هتهم beginner of java وال advanced programmer كمان

يعني سلسلة شبه متكاملة وانا بعتذر عن التاخير في الرفع لكن ده والله لظروف خارجة عن ارادتي

الملف مضغوط من نوع وين رار ومحمي بباسوورد

اللي مش عنده برنامج فاتح الملفات المضغوطة وين رار يقدر يحمله من اللينك ده

http://www.rarlab.com/rar/wrar380.exe

باسوورد فتح الملف

shabab-tech.blogspot.com

رابط جديدة لتحميل الملف

علي megaupload

http://hide.0lx.net/9

علي filesend

http://hide.0lx.net/10

لوفيه اي مشكلة في الرابط يا ريت تتركوا تعليق وانا هحاول اجدده كل فترة

مع التحية ,

منع الاعلانات التنصيرية في جوجل ادسنس بالصور

2008-08-20T20:23:00.000+03:00

السلام عليكم ورحمة الله وبركاته

نظرا لاهمية هذا الموضوع احببت طرحه

تقوم شركة جوجل ادسنس

بعرض اعلانات تبشيرية (تنصيرية) وبعرض اعلانات اباحية

علي اعلاناتها

وبذلك تكون الاموال المكتسبة غير حلال

ولكن بفضل الله تم ايجاد حل لهذه المشكلة

والحل خطوة خطوة

1)قم بفتح حسابك في جوجل ادسنس

2)انظر الي الشريط العلوي يحتوي علي التقارير , اعداد adsense ...الخ

2)ستجد في الشريط العلوي (اعداد adsense) اضغط عليها

3)بعد ذلك اختار (فلتر الاعلانات المنافسة)

4) بعد الضغط علي فلتر الاعلانات المنافسة

ستظهر هذه الصورة

قم بملأ المربع بقائمة المواقع التي تود منعها من الظهور

ومن هذه المواقع

.www.everyarabstudent.com

.www.godloves-you.com

.www.maarifatallah.com

ويا ليت كل من يقرا الموضوع يضيف المواقع

المحرمة التي يعرفها في

جوجل ادسنس

حتي نضيفها للمواقع الممنوعة

حتي يستطيع كل مستخدمي ادسنس منعها

ودمتم سالمين,

Apply HTML Scripts for websites

2008-08-19T14:01:00.000+03:00

Collection of fantastic HTML codes for writing and posting in websites and blogs

only copy the code and paste it into your blog or website

enjoy your posts and handwritings

and make yourself distinct writer and blogger

Start in the name of Allah

:Code

1) Paste Website into your post

2) Writing a text move down

<marquee direction="Down" scrollamount="2" width="298" height="60"> Hello to my blog </marquee>

3) Writing a text move up

<marquee direction="Up" scrollamount="2"> Hello to shabab tech </marquee>

4) writing a text move right into a frame

<marquee direction="right" width="550" height="200" style="TAHOMA: 150%; font-size: 14pt; color: white; border-style: ridge; border-color: #0066FF" bgcolor="#000000" scrolldelay="100" scrollamount="3"> Hello to shababTech </marquee>

5) writing a text move left into a frame

<marquee direction="left" width="550" height="24" style="TAHOMA: 150%; font-size: 14pt; color: white; border-style: ridge; border-color: #0066FF" bgcolor="#800000" scrolldelay="100" scrollamount="3"> Hello to shababTech </marquee>

6)writing fixed text on a colored background

<center> <div id="cdiv" style="BACKGROUND-COLOR: 800000"> . . [qb] Hello to shababTech [/qb]

8) writing a text move up into a frame with a black background

<marquee direction="up" width="700" height="142" style="TAHOMA: 150%; font-size: 14pt; color: white; border-style: ridge; border-color: #0066FF" bgcolor="#000000" scrolldelay="100" scrollamount="2"><center> Hello to shababTech </marquee>

9) writing a text colored with 2 colors

<table style="filter:GLOW( strength=">Hello to shababTech </table>

10)put image as a comment background

11) put image as a background to a whole post

12) making a frame to a whole page

13) writing with a fiery shape

<body> <div align="center"><center> <table border="0" width="319" style="FILTER: GLOW(color='red', strength=#+6)"> <tbody> <tr> <td width="313"><h1 align="center">Writing Hello to shababTech</h1> </td> </tr> </tbody></table> </center></div> </body>

14) put a link into a post

[url]Website URL[/url]

15) writing with Italic shape

[i]Write here[/i]

Best Regards,

طريقة اضافة اكواد للمدونات

2008-08-09T00:34:00.000+03:00

السلام عليكم ورحمة الله وبركاته

كثيرا ما يسال المدونين المبتدئين
كيف اضيف اكواد html للمدونات
في 10 خطوات سهلة جدا تستطيع ذلك
فقط اتبع الخطوات خطوة خطوة وستجدها ان شاء الله
سهلة وبسيط:
1) افتح مدونتك الالكترونية
2)في اعلي الصفحة ستجد كلمة تخصيص اضغط عليها
3)ستنتقل الي صفحة (اضافة عناصر الصفحة وترتيبها)
4)اختار ( اضافة عنصر صفحة)
5)تأتي قائمة (اختر عنصر صفحة جديد)
6)اختار html/java script واضغط (اضافة الي المدونة)
7)ستفتح لك صفحة انسخ فيها الكود
8)اضغط (حفظ)
9)عدل مكان الكود الذي اضفته كما تريد فقط اضغط عليه واسحبه وضعه اينما تريد في مدونتك واضغط حفظ
10)مبروك عليك تم اضافة كود جديد لصفحتك
انتظرونا بمشيئة الله الدرس القادم يضم مجموعة ممتازة من اكواد html للمدونات

اجعل جهازك في قمة الاداء

2008-08-08T16:32:00.000+03:00

السلام عليكم ورحمة الله وبركاته
يحتاج جهاز الكمبيوتر لعمليات اصلاح وتنشيط وصيانة وهذه بعض البرامج التي تحتاج اليها:

Memory Release Master 5.0.0.1+ serial

يقوم باعادة استخدام وتنشيط الجزء الغير مستخدم (الخامل) من ذاكرة جهازك ويسرع استجابة جهازك للاوامر

http://rapidshare.com/files/77517874/Memory_Release_Master-raed55.rar

Super Cleaner 2.95+keygen

نظف جهازك من بقايا الانترنت بهذه البرامج المدمجة في برنامج واحد

http://rapidshare.com/files/79949402/Super_Cleaner_2.95_Keygen-raed55.rar

Webroot Window Washer 6.5.5.153 Retail

لمن يعاني من مشاكل الانترنت اكسبلورر هذا البرنامج يقوم بعمل صيانة للانترنت اكسبلورر
ويقوم بتنظيفه بما في ذلك الكوكيز والانترنت

http://rapidshare.com/files/80486927/Webroot_Window_Washer_v655_153_Multi.rar

Registry Mechanic v7.0.0.1010+keygen

برنامج غني عن التعريف يقوم بتحسين اداء الويندوز دون الحاجة الي تحديث

http://rapidshare.com/files/80401986/Registry_Mechanic_7.0.0.1010_Inc._keygen.rar

TuneUp Utilities 2008 final+keygen

يحسن أداء جهاز الكمبيوتر الخاص بك ، يصحح المشاكل ويساعدك لتخصيص النظام ليتناسب مع احتياجاتك. فهو يجمع بين الجوانب الهامة لتكوين النظام ، والأمن ، والتنظيف والصيانة في إطار حديث. يمكنك ازالة الملفات غير الضروريه من القرص الثابت ويضبط اعدادات اتصالك بالانترنت ، واستعادة حذف الملفات ، والمزيد من تحسين الذاكرة

http://rapidshare.com/files/80400367/Tuneup_utilities_2008-raed55.rar

الكيجن http://rapidshare.com/files/81776856/TU2008_Keymaker_raed55.rar

DSL Speed 4.2+keygen

برنامج روعة في تسريع اداء الانترنت وانا من مشجعيه فهو يقوم باختيار افضل سرعة للانترنت لديك فقط اضغط
normal oprimize,advanced optimize
وقم بقياس سرعة الانترنت لديك وغيرها الكثير

http://rapidshare.com/files/78652768/DSL_Speed_4.2_keygen.raed55.rar

الملفات مضغوطة كلمة السر لفك الضغط

password for all raed55

حلول لبعض مشاكل الهاردوير

2008-08-04T11:27:00.000+03:00

كثيرا ما تواجه مستخدمي الكمبيوتر مشاكل كثيرة وهذا سرد لبعض هذه الاعطال, واسبابها, وحلولها:
أعطال الشاشة
العطـل : توقف عمل الشاشة مع إضاءة طبيعية للمبة
السبـب : عطل في وحدة الطاقة أو الشاشة أو عطل في كابل الشاشة أو كرت الشاشة
الإجـراء : إصلاح أو تغيير وحدة الطاقة .تغيير كابل الشاشة .تغيير كرت الشاشة .
العطـل : توقف للشاشة مع إطفاء لمبة الشاشة
السبـب : عدم وجود أي طاقة
الإجـراء : استبدال كابل الشاشة .أو وحدة الطاقة .أو عطل في الشاشة .
العطل : صورة معتمة مع وميض اللمبة
السبـب : عطل في الشاشة أو كرت الشاشة
الإجـراء : أغلق الجهاز إذاً وشغل الشاشة إذا ظهرت الشاشة بدون اهتزاز فالمشكلة من الكرت والعكس
العطـل : عدم القدرة على ضبط الألوان أو درجة الوضوح
السبـب : عطل في الشاشة أو الكرت
الإجـراء : استبدل كرت الشاشة إذا تكررت المشكلة فالمشكلة من الشاشة
العطـل : عدم تواجد الألوان الأساسية
السبـب : تواجد محيط مغناطيسي
الإجـراء : ير مكان الشاشة
العطـل : ألوان الشاشة غير سليمة
السبـب : لكابل أو الشاشة
الإجـراء : استبدل الكابل
ملاحظة : * يفضل تنظيف سطح الشاشة دائماً وتغطيتها بالكيس الواقي من الغبار عند الانتهاء من العمل .
* يفضل وضع الواقي من إشعاع الشاشة
صيانة الطابعات
العطـل : طبع معلومات غير مفهومة
السبـب : تركيب غير سليم لكابل الطابعة أو تعريف غير سليم للطابعة
الإجـراء :* تركيب الكيابل بطريقة سليمة .
*إعادة تعريف الطابعة .
تظهر بعض المشاكل نتيجة عدم وجود ورق أو حبر في الطابعة .
ملاحظة : يفضل عمل تنظيف للطابعة بطريقتين :
# مسح الطابعة من الداخل بشريط ناشف وهناك مادة تنظف بها الطابعة من الداخل .
# عمل تنظيف من برنامج التنظيف المرفق مع برنامج الطابعة ثم طباعة صفحة الاختبار أعطال المعالج
العطـل : الحاسب لا يعمل بصورة سليمة بعد تغيير المعالج
السبـب : عدم تعريف المعالج
الإجـراء : فك البطارية وإعادة تركيبها –SETUP
العطـل : سماع أصوات غريبة بعد تركيب المعالج
السبـب : عطل في المعالج
الإجـراء : استبدال المعالج
العطـل : عدم ظهور شيء على الشاشة حتى بعد التأكد من صلاحية كرت الشاشة والذاكرة المؤقتة
السبـب : عطل في المعالج
الإجـراء : استبدال المعالج أعطال اللوحة الأم .. ( المذر بورد )
العطـل : عدم ظهور أي بيانات على الشاشة بعد استبدال اللوحة الأم
السبـب : إذا لم يكن السبب له علاقة بالرام أو كرت الشاشة أو المعالج فيكون العطل في اللوحة الأم
الإجـراء : يجب استبدالها
العطـل : يظهر بعض الأحيان أعطال خاصة بالكروت المدمجة في اللوحة المدمجة
السبـب : عطل في أحد كروت اللوحة المدمج
الإجـراء : إلغاء الكرت المدمج واستبداله وإذا لم تتح اللوحة هذه الميزة فيجب استبدال اللوحة الأم
أعطال الذاكرة :
العطـل : رنين متصل
السبـب : عدم تركيب الرام أو عدم وضعها بالشكل الصحيح
الإجـراء : التأكد من تركيب الرام
العطـل : لم يظهر شئ على الشاشة بعد تركيب الرام
السبـب : بعد التأكد من أن العطل ليس بسبب الشاشة أو الكرت يكون الاحتمال التالي هو الرام
الإجـراء : استبدال الرام
العطـل : HANG
السبـب : وهي أكثر المشاكل التي تحصل في الجهاز وتكون مسبباتها إما كرت الشاشة أو الرام
الإجـراء : استبدال الرام
العطـل : حجم الذاكرة المدون على الشاشة غير سليم
السبـب : عدم تركيب الرام بشكل سليم
الإجـراء : فك وتركيب الرام من جديد
العطـل : ظهور حروف غريبة على الشاشة أو خطوط على سطح المكتب
السبـب : عطل في كرت الشاشة أو الرام
الإجـراء : استبدال الرام
العطـل : ظهور رسالة insufficient memory
السبـب : تشغيل عدد كبير من الملفات أو البرامج
الإجـراء : غلق أكبر عدد من البرامج أو زيادة في سعة الرام فحص واختبار الرام
بعد تركيب الرام وعمل الجهاز بصورة سليمة هناك طرق لفحص قوة الرام وإمكانياتها :
# تشغيل عدد كبير من البرامج .
# تشغيل أي برنامج نصي مثل الوورد وتعليق على لوحة المفاتيح أي مفتاح وتركه فترة ساعة على الأقل .
# إعادة تشغيل الجهاز أكثر من مرة .
أعطال مشغل القرص الصلب .. وهي على نوعين هما :
أعطال برامج : وهي أعطال يمكن إصلاحها من خلال برامج للصيانة سيتم ذكرها لاحقاً
أعطال أجهزة : وهي أعطال ميكانيكية تكون لأحد الأسباب التالية :
• عدم تثبيت جيد لكابل البيانات أو الطاقة .
• أوضاع غير سليمة للجنبرز .
• عطل في وحدة الإمداد بالطاقة .
الإجـراء :
• تغيير أو تركيب كابل بيانات .
• التأكد منت وضع الجنبرز .
• تغيير وحدة الإمداد بالطاقة .
أعطال الـ CD-ROM :
العطـل : عدم قدرة الحاسب على عمل BOOT من مشغل الأقراص
السبـب : عدم تعريف المشغل
الإجـراء : تعريف المشغل
العطـل : عدم قدرة الحاسب على التحميل من الـCD-ROM
السبـب : تركيب غير سليم للمشغل أو عدم تركيب سليم للكابل أو عطل في الكابل
الإجـراء :يتم تركيب المشغل بطريقة سليمة ثم يتم تنظيفه وبعد ذلك يتم تشغيله إذا لم يعمل فالمشكلة في المشغل.
أعطال وحدة الطاقة :
العطـل والإجراء المناسب : قد يكون لوحدة الطاقة سبب رئيسي في ضعف بعض الأجهزة ولذلك يجب التأكد من ذلك .وكذلك في حالة حصول خطأ في التوصيل 110/220 وحدوث تلف للفيوز فيمكن استبدال الفيوز أو استبدال وحدة الطاقة CD-ROM