sample AWS sqs in CLI

sqs.sh

# Create Q

ENV=dev1
Qname=tom-test1
Q1=$(aws sqs create-queue --queue-name "$ENV-$Qname" --output text)
echo $Q1


aws sqs send-message --queue-url $Q1 --message-body "Test message 1 from Tom"

#get no. of msgs
aws sqs get-queue-attributes --queue-url  $Q1 --attribute-names ApproximateNumberOfMessages

#get all Q attributes
aws sqs get-queue-attributes --queue-url  $Q1 --attribute-names All --output json

# send 2nd msgs
aws sqs send-message --queue-url $Q1 --message-body "Test message 2 from Tom"


Timeout=10
# get message
J=$(aws sqs receive-message  --queue-url  $Q1 --output json  --visibility-timeout $Timeout); echo $J|jq '.Messages[0].Body' ; ReceiptHandle=$(echo $J|jq '.Messages[0].ReceiptHandle')
#echo $ReceiptHandle

# delete msg
aws sqs delete-message  --queue-url $Q1 --receipt-handle $(eval echo $ReceiptHandle)

# check no. of messages
aws sqs get-queue-attributes --queue-url  $Q1 --attribute-names ApproximateNumberOfMessages

# See message visibility timeout
sleep 5
aws sqs get-queue-attributes --queue-url  $Q1 --attribute-names ApproximateNumberOfMessages


# -- demo timeout loop

# get message
J=$(aws sqs receive-message  --queue-url  $Q1 --output json  --visibility-timeout $Timeout)

echo Message is:
echo $J|jq '.Messages[0].Body'

ReceiptHandle=$(echo $J|jq '.Messages[0].ReceiptHandle')
#echo $ReceiptHandle
NotDone=10
while (( NotDone-- ))
do
	aws sqs change-message-visibility --queue-url $Q1 --receipt-handle $(eval echo $ReceiptHandle) --visibility-timeout 10
	
	echo doing work on this message
done


# delete msg
aws sqs delete-message  --queue-url $Q1 --receipt-handle $(eval echo $ReceiptHandle)



# get message with long polling
# empty Q
aws sqs purge-queue  --queue-url $Q1 

# confirm empty
aws sqs receive-message  --queue-url  $Q1 --output json

# long poll
J=""
aws sqs receive-message  --queue-url  $Q1 --output json --wait-time-seconds  10

#send from other terminal:
 Q1=https://eu-west-1.queue.amazonaws.com/069157535684/dev1-tom-test1
 aws sqs send-message --queue-url $Q1 --message-body "Test message from other window"

# delete Q
aws sqs delete-queue --queue-url $Q1