Home

# Get the object from the event and show its content type
bucket = event['Records'][0]['s3']['bucket']['name']
# bucket = "mydemo2kelly"
key = urllib.parse.unquote_plus(event['Records'][0]['s3']['object']['key'], encoding='utf-8')
# key = "lambda.rtf"
try:
    response = s3.get_object(Bucket=bucket, Key=key)
    print("CONTENT TYPE: " + response['ContentType'])
    return response['ContentType']
except Exception as e:
    print(e)
    print('Error getting object {} from bucket {}. Make sure they exist and your bucket is in the same region as this function.'.format(key, bucket))
    raise e

ahu@rahu:~/0del/_working/sunilawsbit/awsbit$ cat boto_lambda_s3_eventtrigger.txt

import json import urllib.parse import boto3

print('Loading function')

s3 = boto3.client('s3')

def lambda_handler(event, context): #print("Received event: " + json.dumps(event, indent=2))

# Get the object from the event and show its content type
bucket = event['Records'][0]['s3']['bucket']['name']
# bucket = "mydemo2kelly"
key = urllib.parse.unquote_plus(event['Records'][0]['s3']['object']['key'], encoding='utf-8')
# key = "lambda.rtf"
try:
    response = s3.get_object(Bucket=bucket, Key=key)
    print("CONTENT TYPE: " + response['ContentType'])
    return response['ContentType']
except Exception as e:
    print(e)
    print('Error getting object {} from bucket {}. Make sure they exist and your bucket is in the same region as this function.'.format(key, bucket))
    raise e

cat boto_lambda_stopinstances.txt

def lambda_handler(event, context): import boto3

ec2 = boto3.client('ec2', region_name='us-east-1')


response = ec2.describe_instances()
for reservation in response["Reservations"]:
    for instance in reservation["Instances"]:
        # This sample print will output entire Dictionary object
        
        # This will print will output the value of the Dictionary key 'InstanceId'
        print('kumar in')
        print(instance["InstanceId"])
        print('kumar out')
        ids = [instance["InstanceId"]]
        ec2.stop_instances(InstanceIds=ids)
        

# TODO implement
return 'Done'

cat boto_Sample_botoamodb.txt

import json
import boto3
from boto3.session import Session


session = Session(aws_access_key_id='AsfsYZRXV6YGGHMFOLQ',
                  aws_secret_access_key='TOvtfm5sdasdsadW7NYGX3kkad+Hf',
                  region_name='ap-south-1')

dynamodb = session.resource("dynamodb")
table = dynamodb.Table('movielist')

##with open('C:\Python27\projects\moviedata.json') as data_file:
with open('C:\Python27\projects\moviedata.json') as json_file:
        data = json.load(json_file)
        for p in data:
            print('Name: ' + str(p['year']))
            print('Website: ' + p['title'])
            if 'directors' in  p['info']:
                slistdir = p['info']['directors']
                sdirectors = ','.join(slistdir)
                print ('Directors: ' + sdirectors)
            else:
                sdirectors = "null"

            if 'release_date' in p['info']:
                print ('Release dates:' + p['info']['release_date'])
                sreleasedate = str(p['info']['release_date'])
            else:
                sreleasedate = "null"
            if 'rating' in p['info']:
                 print ('rating:' + str(p['info']['rating']))
                 srating = str(p['info']['rating'])
            else:
                srating = "null"
            table.put_item(
                Item={
                    'Movietitle': p['title'],
                    'yearofrelease': str(p['year']),
                    'directors': sdirectors,
                    'releasedate': sreleasedate,
                    'rating': srating,
                }
            )

rahu@rahu:~/0del/_working/sunilawsbit/awsbit$

important links

https://www.webpagetest.org/

lambda_s3_dynamodb_sample.txt

sample.txt from future import print_function

import json import urllib import boto3

print('Loading function')

s3 = boto3.client('s3')

def lambda_handler(event, context): #print("Received event: " + json.dumps(event, indent=2))

# Get the object from the event and show its content type
bucket = event['Records'][0]['s3']['bucket']['name']
key = urllib.unquote_plus(event['Records'][0]['s3']['object']['key'].encode('utf8'))
try:
    response = s3.get_object(Bucket=bucket, Key=key)
    print("#############################################################")
    print(response)
    print("CONTENT TYPE: " + response['ContentType'])
    print("Key Size is : " + str(response['ContentLength']))
    print("Key Name is : " + str(key))
    print("Hello..Welcome to AWS Lamba function world. Kumar welcome you.....")
    
    print("#############################################################")
    print("calling dynamodb function...")
    dynamodb = boto3.resource('dynamodb', region_name='us-east-1')
    print("calling dynamodb table...")
    table = dynamodb.Table('s3info')
    print(table.creation_date_time)
    print("Inserting the value..")
    try:
        response = table.put_item(
        Item={
            's3objectname': str(key),
            'content type': response['ContentType'],
            'size': str(response['ContentLength']),
            'etag': str(response['ETag'])
        })

    except ClientError as e:
        print(e.response['Error']['Message'])
    print("PutItem succeeded:")
    return str(response['ContentLength'])
except Exception as e:
    print(e)
    print('Error getting object {} from bucket {}. Make sure they exist and your bucket is in the same region as this function.'.format(key, bucket))
    raise cat lamdbda_Stop_instances.txt

def lambda_handler(event, context): # TODO implement import boto3

ec2 = boto3.client('ec2', region_name='us-east-1')


response = ec2.describe_instances()
for reservation in response["Reservations"]:
    for instance in reservation["Instances"]:
        # This sample print will output entire Dictionary object
        
        # This will print will output the value of the Dictionary key 'InstanceId'
        print('kumar in')
        print(instance["InstanceId"])
        print('kumar out')
        ids = [instance["InstanceId"]]
        ec2.stop_instances(InstanceIds=ids)
        

# TODO implement
return 'Hello from Lambda'

rahu@rahu:~/0del/_working/sunilawsbit/awsbit$

cat links.txt

my youtube channel : https://www.youtube.com/channel/UC0qiodlU6wb0Av1dYt-NsKA/videos

https://www.youtube.com/watch?v=0IAPZzGSbME&list=PLDN4rrl48XKpZkf03iYFl-O29szjTrs_O

GeekforGeeks Interviewbit Leetcode

System design https://www.hiredintech.com/classrooms/system-design/lesson/60 HIghScalability. Grokkoing the coding interview.

linux basic commands

cat linuxBasicCmd.txt Linux basic commands:

Its OS

Its a kernel --> Core of OS (Between Hardware & Applications)

linus Torvalds Started in 1991 from IBM with MS dos...

First version Came in 1994

Its open source

Distribution --> linux kernal + apps

redhat or others...each have diffrent focus

distrowatch.com

redhat & ubuntu are famous --> both are license based..

centos is free fedora"" debian & 100's

clients

putty xshell

http://linux-training.be/linuxfun.pdf

bash vs shell???

$ (user)vs #(root)

folder structure

/ --> root

/bin --> binaries & executable programs

/etc --> OS System config files..

/home --> Home directories..--> pictures, files.

/opt --> third party tools

/tmp --> temp folder...data is deleted when reboot?

/usr --> user releated programs..

/var --> varible data , log files.

/boot --> For boot OS

/lib --> System libraries

/lib64 --> 64 bit

what is shell?

bash vs shells

commands are case sensitive...

#!/bin/bash

man man ls man curl hit q to quit..

date

whoami

hostname

uname

uname -a --> OS

ping

ifconfig

pwd --> current location

cd --> change diretory

ls --> List ls -l --> List Options

mkdir/rmdir --> create directory

rm

touch --> create a file

touch hello.txt

vi

vi test.txt

press i button to insert

to save the file, press esc button , :wq

cat --> displays content of the file

cat test.txt

cat /etc/hostname

head /etc/passwd --> Read fiesr ten lines...

The head command can also display the first n lines of a file.

head -4 /etc/passwd

tail the tail command will display the last ten lines of a file

tail /etc/services

cp copy

mv copy

find find / -name *.mp3

find / -empty

grep

chmod

chmod 754 myfile https://www.guru99.com/file-permissions.html

echo $x = 10

echo $x

echo $path

jobs

jobs -l jobs -p

jobs -s

useradd kumar

passwd kumar

sudo

df

du -->du estimates and displays the disk space used by files.

tar

tar -cvf tecmint-14-09-12.tar /home/tecmint/

untar

zip/unzip

gzip --> Important

apt-get

Vs

yum install

sleep

sudo lshw

lscpu --> CPU

ps --> process ps -A

ps -u kumar

pstree

Services: service --status-all

kill pid

killall

ps aux ps ax | grep httpd

perf

curl

top

test 10 -gt 55 ; echo $?

#!/bin/bash if [ -f isit.txt ] then echo isit.txt exists! else echo isit.txt not found! fi

LInux powershell

rahu@rahu:~/0del/_working/sunilawsbit/awsbit$ cat LinuxVspowershelll.txt https://ss64.com/ps/rahu@rahu:~/0del/_working/sunilawsbit/awsbit$

python samples list

rahu@rahu:~/0del/_working/sunilawsbit/awsbit$ cat pyhton_samples_list_dict_tuple_files_module.txt

List:

import os fulldirs = os.listdir("C:\Program Files") print type(fulldirs) for ff in fulldirs: print ff

Tuple:

months = ('January','February','March','April','May','June','July','August','September','October','November',' December')

print months[0] print type(months)

Directionary :

phonebook = {'Andrew Parson':8806336, 'Emily Everett':6784346, 'Peter Power':7658344, 'Lewis Lame':1122345} print type(phonebook) print phonebook['Peter Power'] for key, value in phonebook.iteritems(): print key print value

Files:

strparamsfile = "C:\Python27\README.txt" with open(strparamsfile, 'r') as file : filedata = file.read() print filedata

Replace the target string

filedata = filedata.replace('xyz', 'abc')

Write the file out again

with open(strparamsfile, 'w') as file: file.write(filedata)

Modules & Functions:

Create a file called as testkelly.py

def add(x, y): print "we are calling the addition function" return x + y

def sub(x, y): print "we are calling the sub function" return x - y

def divide(x, y): print "we are calling the addition function" return x / y

Then type --> import testkelly

print testkelly.add(3,7)

iam user permission

cat S3_iamuser_permission_policy.txt { "Version": "2012-10-17", "Statement": [ { "Sid": "Example permissions", "Effect": "Allow", "Principal": { "AWS": "arn:aws:iam::468719736074:root" }, "Action": [ "s3:GetBucketLocation", "s3:ListBucket" ], "Resource": "arn:aws:s3:::testawskumar" } ] }

SQS

cat SQS.txt

import json import boto3 from boto3.session import Session

session = Session(aws_access_key_id='', aws_secret_access_key='', region_name='us-east-1')

sqs = boto3.resource('sqs',region_name='us-east-1')

queue_url = 'https://sqs.us-east-1.amazonaws.com/416227743233/learn'

queue = sqs.get_queue_by_name(QueueName='learn')

Create a new message

response = queue.send_message(MessageBody='Hello Kelly!')

GoodLinks

https://grep.app/search?q=Cloudflare&case=true # search github repository

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Home

Colour Codes

Blogs

Running awscli ( just aws Actually)

Locations in Computer for AWS

Cost Calculator

Datasets in every field--- >

History of AWS

Whats new with AWS

Serverless

People websites

Milap Newpane

Jeff Barr

pralay provided

cli tool for aws

Basics of Devops

boto_lambda_s3_eventtrigger.txt

ahu@rahu:~/0del/_working/sunilawsbit/awsbit$ cat boto_lambda_s3_eventtrigger.txt

cat boto_lambda_stopinstances.txt

cat boto_Sample_botoamodb.txt

important links

lambda_s3_dynamodb_sample.txt

cat links.txt

linux basic commands

LInux powershell

python samples list

Replace the target string

Write the file out again

iam user permission

SQS

Create a new message

GoodLinks

Clone this wiki locally

Home

Colour Codes

Blogs

Running awscli ( just aws Actually)

Locations in Computer for AWS

Cost Calculator

Datasets in every field--- >

History of AWS

Whats new with AWS

Serverless

People websites

Milap Newpane

Jeff Barr

pralay provided

cli tool for aws

**Basics of Devops **

boto_lambda_s3_eventtrigger.txt

ahu@rahu:~/0del/_working/sunilawsbit/awsbit$ cat boto_lambda_s3_eventtrigger.txt

cat boto_lambda_stopinstances.txt

cat boto_Sample_botoamodb.txt

important links

lambda_s3_dynamodb_sample.txt

cat links.txt

linux basic commands

LInux powershell

python samples list

Replace the target string

Write the file out again

iam user permission

SQS

Create a new message

GoodLinks

Clone this wiki locally

Basics of Devops