hackathon-ksql

Hackathon for KSQL and Confluent Cloud. The idea is to play around with KSQL.

Agenda afternoon (3 hours):

Welcome and short introduction into KSQL
Introduction into the Hands-on environment
Hands-On - let's do coding

Pre-reqs:

A Confluent docker setup for ATM Fraud detection is prepared and can be deployed to AWS via terraform for each attendee
Attendee need only SSH tools and must be able to access Port 22, Port 80 and Port 8088 into the internet(Firewall)
All GUIs can also be tunneled via SSH, e.g. for Control Center

ssh -i ~/keys/your-key.pem -N -L 9022:ip-<IP private>.eu-central-1.compute.internal:9021 ec2-user@<PUBIP)

All attendees will get the private SSH key as well Public IP to connect the environment

Agenda Evening

Welcome and short intro into the evening
short presentation around KSQL
short introduction into the demo setup: Confluent Platform connected to Confluent Cloud Clusters
Tasks, Guidelines
Coding
Prices, party

Go to proceedings / Playbook

Pre-reqs:

Attendees will get access to Confluent Cloud (API Keys), Schema Registry (API Keys) and maybe AWS environment
Some scripts are prepared to make the coding easier
Attendee need only SSH tools and must be able to access Port 22 into the internet(Firewall)
All attendees will get the private SSH key as well Public IP to connect the aws environment if necessary

Proceeding and Coding

For both time slots a kind of preparation and Hands-on is prepared. But the attendees can do what ever useful.

ATM Fraud detection (afternoon)

There is a nice solution developed from Robin Moffat. You can follow the Blog Entry, and Sources Description from Robin or take the play book

Blog
Sources

To run this environment manually, just deploy a working AWS compute instance via

terraform init
terraform plan
terraform apply

I did collect the most important statement in the following Play BooK: For the KSQL kackathon you only need to access the Control Center via http://Public-IP:80 But you can also access directly access the compute instance. Login Information will be send to attendees

Working in the compute instance

login into Compute instance:

ssh -i ~/keys/hackathon-temp-key.pem ec2-user@<PUB IP>

FYI: tunnel control center

ssh -i ~/keys/hackathon-temp-key.pem -N -L 9022:ip-<private IP>.eu-central-1.compute.internal ec2-user@<PUBIP>

First check versions

java -version
docker-compose --version
docker version

Switch to the working directory

cd /home/ec2-user/software/hackathon-ksql-master

Launch the ksql cli

docker-compose exec ksql-cli bash -c 'echo -e "\n\n⏳ Waiting for KSQL to be available before launching CLI\n"; while [ $(curl -s -o /dev/null -w %{http_code} http://ksql-server:8088/) -eq 000 ] ; do echo -e $(date) "KSQL Server HTTP state: " $(curl -s -o /dev/null -w %{http_code} http://ksql-server:8088/) " (waiting for 200)" ; sleep 5 ; done; ksql http://ksql-server:8088'

Working with Control Center

Go into your Browser and add the URL from terraform output

http://Public-IP:80

KSQL Hackathon Playbook

in ksql (in compute or Control Center) exeute the following commands

list topics;
PRINT 'atm_txns_gess' FROM BEGINNING;

Register the topic as a KSQL stream:

CREATE STREAM ATM_TXNS_GESS (account_id VARCHAR,
                            atm VARCHAR,
                            location STRUCT<lon DOUBLE,
                                            lat DOUBLE>,
                            amount INT,
                            timestamp VARCHAR,
                            transaction_id VARCHAR)
            WITH (KAFKA_TOPIC='atm_txns_gess',
            VALUE_FORMAT='JSON',
            TIMESTAMP='timestamp',
            TIMESTAMP_FORMAT='yyyy-MM-dd HH:mm:ss X');

Query the created stream

SELECT TIMESTAMPTOSTRING(ROWTIME, 'HH:mm:ss'), ACCOUNT_ID, ATM, AMOUNT
        FROM ATM_TXNS_GESS
        LIMIT 5;

create a clone of that stream

CREATE STREAM ATM_TXNS_GESS_02 WITH (PARTITIONS=1) AS
        SELECT * FROM ATM_TXNS_GESS;

Join the stream (two in practice, but logically still just a single Kafka topic). Also calculate time between two events (useful for spotting past-joins, not future).

SELECT S1.ACCOUNT_ID,
        TIMESTAMPTOSTRING(S1.ROWTIME, 'HH:mm:ss') AS S1_TS,
        TIMESTAMPTOSTRING(S2.ROWTIME, 'HH:mm:ss') AS S2_TS,
        (S2.ROWTIME - S1.ROWTIME)/1000 AS TIME_DIFF_SEC,
        S1.TRANSACTION_ID ,S2.TRANSACTION_ID
FROM   ATM_TXNS_GESS S1
       INNER JOIN ATM_TXNS_GESS_02 S2
        WITHIN 10 MINUTES
        ON S1.ACCOUNT_ID = S2.ACCOUNT_ID
LIMIT 40;

Filter out : direct matches to self, those in the same location, Joins to past-dated events.

SELECT S1.ACCOUNT_ID,
        TIMESTAMPTOSTRING(S1.ROWTIME, 'HH:mm:ss') AS S1_TS,
        TIMESTAMPTOSTRING(S2.ROWTIME, 'HH:mm:ss') AS S2_TS,
        (S2.ROWTIME - S1.ROWTIME)/1000 AS TIME_DIFF_SEC,
        S1.ATM, S2.ATM,
        S1.TRANSACTION_ID ,S2.TRANSACTION_ID
FROM   ATM_TXNS_GESS S1
       INNER JOIN ATM_TXNS_GESS_02 S2
        WITHIN (0 MINUTES, 10 MINUTES)
        ON S1.ACCOUNT_ID = S2.ACCOUNT_ID
WHERE   S1.TRANSACTION_ID != S2.TRANSACTION_ID
  AND   (S1.location->lat != S2.location->lat OR
         S1.location->lon != S2.location->lon)
  AND   S2.ROWTIME != S1.ROWTIME
LIMIT 20;

Derive distance between ATMs & calculate required speed:

SELECT S1.ACCOUNT_ID,
        TIMESTAMPTOSTRING(S1.ROWTIME, 'HH:mm:ss') AS S1_TS,
        TIMESTAMPTOSTRING(S2.ROWTIME, 'HH:mm:ss') AS S2_TS,
        (CAST(S2.ROWTIME AS DOUBLE) - CAST(S1.ROWTIME AS DOUBLE)) / 1000 / 60 AS MINUTES_DIFFERENCE,
        CAST(GEO_DISTANCE(S1.location->lat, S1.location->lon, S2.location->lat, S2.location->lon, 'KM') AS INT) AS DISTANCE_BETWEEN_TXN_KM,
        GEO_DISTANCE(S1.location->lat, S1.location->lon, S2.location->lat, S2.location->lon, 'KM') / ((CAST(S2.ROWTIME AS DOUBLE) - CAST(S1.ROWTIME AS DOUBLE)) / 1000 / 60 / 60) AS KMH_REQUIRED,
        S1.ATM, S2.ATM
FROM   ATM_TXNS_GESS S1
       INNER JOIN ATM_TXNS_GESS_02 S2
        WITHIN (0 MINUTES, 10 MINUTES)
        ON S1.ACCOUNT_ID = S2.ACCOUNT_ID
WHERE   S1.TRANSACTION_ID != S2.TRANSACTION_ID
  AND   (S1.location->lat != S2.location->lat OR
         S1.location->lon != S2.location->lon)
  AND   S2.ROWTIME != S1.ROWTIME
LIMIT 20;

Persist as a new stream:

CREATE STREAM ATM_POSSIBLE_FRAUD
    WITH (PARTITIONS=1) AS
SELECT S1.ROWTIME AS TX1_TIMESTAMP, S2.ROWTIME AS TX2_TIMESTAMP,
        GEO_DISTANCE(S1.location->lat, S1.location->lon, S2.location->lat, S2.location->lon, 'KM') AS DISTANCE_BETWEEN_TXN_KM,
        (S2.ROWTIME - S1.ROWTIME) AS MILLISECONDS_DIFFERENCE,
        (CAST(S2.ROWTIME AS DOUBLE) - CAST(S1.ROWTIME AS DOUBLE)) / 1000 / 60 AS MINUTES_DIFFERENCE,
        GEO_DISTANCE(S1.location->lat, S1.location->lon, S2.location->lat, S2.location->lon, 'KM') / ((CAST(S2.ROWTIME AS DOUBLE) - CAST(S1.ROWTIME AS DOUBLE)) / 1000 / 60 / 60) AS KMH_REQUIRED,
        S1.ACCOUNT_ID AS ACCOUNT_ID,
        S1.TRANSACTION_ID AS TX1_TRANSACTION_ID, S2.TRANSACTION_ID AS TX2_TRANSACTION_ID,
        S1.AMOUNT AS TX1_AMOUNT, S2.AMOUNT AS TX2_AMOUNT,
        S1.ATM AS TX1_ATM, S2.ATM AS TX2_ATM,
        CAST(S1.location->lat AS STRING) + ',' + CAST(S1.location->lon AS STRING) AS TX1_LOCATION,
        CAST(S2.location->lat AS STRING) + ',' + CAST(S2.location->lon AS STRING) AS TX2_LOCATION
FROM   ATM_TXNS_GESS S1
       INNER JOIN ATM_TXNS_GESS_02 S2
        WITHIN (0 MINUTES, 10 MINUTES)
        ON S1.ACCOUNT_ID = S2.ACCOUNT_ID
WHERE   S1.TRANSACTION_ID != S2.TRANSACTION_ID
  AND   (S1.location->lat != S2.location->lat OR
         S1.location->lon != S2.location->lon)
  AND   S2.ROWTIME != S1.ROWTIME;

View the resulting transactions:

SELECT ACCOUNT_ID,
        TIMESTAMPTOSTRING(TX1_TIMESTAMP, 'yyyy-MM-dd HH:mm:ss') AS TX1_TS,
        TIMESTAMPTOSTRING(TX2_TIMESTAMP, 'HH:mm:ss') AS TX2_TS,
        TX1_ATM, TX2_ATM,
        DISTANCE_BETWEEN_TXN_KM, MINUTES_DIFFERENCE
FROM ATM_POSSIBLE_FRAUD;

examine Customer data:

SET 'auto.offset.reset' = 'earliest';
CREATE STREAM ACCOUNTS_STREAM WITH (KAFKA_TOPIC='asgard.demo.accounts', VALUE_FORMAT='AVRO');
CREATE STREAM ACCOUNTS_REKEYED WITH (PARTITIONS=1) AS SELECT * FROM ACCOUNTS_STREAM PARTITION BY ACCOUNT_ID;

This select statement is simply to make sure that we have time for the ACCOUNTS_REKEYED topic to be created before we define a table against it

SELECT * FROM ACCOUNTS_REKEYED LIMIT 1;
CREATE TABLE ACCOUNTS WITH (KAFKA_TOPIC='ACCOUNTS_REKEYED',VALUE_FORMAT='AVRO',KEY='ACCOUNT_ID');
SELECT ACCOUNT_ID, FIRST_NAME, LAST_NAME, EMAIL, PHONE FROM ACCOUNTS WHERE ACCOUNT_ID='a42';

Open another terminal and Launch mysql cli

ssh -i ~/keys/hackathon-temp-key.pem ec2-user@<PUBIP>
cd /home/ec2-user/software/hackathon-ksql-master
docker-compose exec mysql bash -c 'mysql -u $MYSQL_USER -p$MYSQL_PASSWORD demo'

in cli show tables

SHOW TABLES;
SELECT ACCOUNT_ID, FIRST_NAME, LAST_NAME, EMAIL, PHONE FROM accounts LIMIT 5;

update the data, you should the changes in ksql open select stream

UPDATE accounts SET EMAIL='none' WHERE ACCOUNT_ID='a42';
UPDATE accounts SET EMAIL='[email protected]' WHERE ACCOUNT_ID='a42';
UPDATE accounts SET EMAIL='[email protected]' WHERE ACCOUNT_ID='a42';

go back to ksql terminal explore stream/table difference:

SELECT ACCOUNT_ID, FIRST_NAME, LAST_NAME, EMAIL, PHONE FROM ACCOUNTS_STREAM WHERE ACCOUNT_ID='a42';

Write enriched data to new stream:

CREATE STREAM ATM_POSSIBLE_FRAUD_ENRICHED WITH (PARTITIONS=1) AS
SELECT A.ACCOUNT_ID AS ACCOUNT_ID,
      A.TX1_TIMESTAMP, A.TX2_TIMESTAMP,
      A.TX1_AMOUNT, A.TX2_AMOUNT,
      A.TX1_ATM, A.TX2_ATM,
      A.TX1_LOCATION, A.TX2_LOCATION,
      A.TX1_TRANSACTION_ID, A.TX2_TRANSACTION_ID,
      A.DISTANCE_BETWEEN_TXN_KM,
      A.MILLISECONDS_DIFFERENCE,
      A.MINUTES_DIFFERENCE,
      A.KMH_REQUIRED,
      B.FIRST_NAME + ' ' + B.LAST_NAME AS CUSTOMER_NAME,
      B.EMAIL AS CUSTOMER_EMAIL,
      B.PHONE AS CUSTOMER_PHONE,
      B.ADDRESS AS CUSTOMER_ADDRESS,
      B.COUNTRY AS CUSTOMER_COUNTRY
FROM ATM_POSSIBLE_FRAUD A
     INNER JOIN ACCOUNTS B
     ON A.ACCOUNT_ID = B.ACCOUNT_ID;

View enriched data:

SELECT ACCOUNT_ID, CUSTOMER_NAME, CUSTOMER_PHONE,
        TIMESTAMPTOSTRING(TX1_TIMESTAMP, 'yyyy-MM-dd HH:mm:ss') AS TX1_TS,
        TIMESTAMPTOSTRING(TX2_TIMESTAMP, 'HH:mm:ss') AS TX2_TS,
        TX1_ATM, TX2_ATM,
        DISTANCE_BETWEEN_TXN_KM, MINUTES_DIFFERENCE
FROM ATM_POSSIBLE_FRAUD_ENRICHED;

customer data enrichment → Neo4j do the join

CREATE STREAM ATM_TXNS_GESS_ENRICHED WITH (PARTITIONS=1) AS
SELECT A.ACCOUNT_ID AS ACCOUNT_ID,
        A.TIMESTAMP AS TIMESTAMP,
        A.AMOUNT AS AMOUNT,
        A.ATM AS ATM,
        A.LOCATION AS LOCATION,
        A.TRANSACTION_ID AS TRANSACTION_ID,
        B.FIRST_NAME + ' ' + B.LAST_NAME AS CUSTOMER_NAME,
        B.EMAIL AS CUSTOMER_EMAIL,
        B.PHONE AS CUSTOMER_PHONE,
        B.ADDRESS AS CUSTOMER_ADDRESS,
        B.COUNTRY AS CUSTOMER_COUNTRY
FROM ATM_TXNS_GESS A
     INNER JOIN ACCOUNTS B
     ON A.ACCOUNT_ID = B.ACCOUNT_ID;

tunnel control center open Control Center in your brower http://localhost:9022

ssh -i ~/keys/hackathon-temp-key.pem -N -L 9022:ip-<priv IP>.eu-central-1.compute.internal:9021 ec2-user@<pub IP>>

Checks in Control Center

check topics
check Streams, Tables, persistant queries
check connect clusters, sink and sources

Kibana, Elasticsearch, Neo4j only work on local installations

Create a tunnel to Kibana Dashboard

ssh -i ~/keys/hackathon-temp-key.pem -N -L 5601:ip-i<Priv IP>.eu-central-1.compute.internal:5601 ec2-user@<PUBIP>

Now tunnel to kibana

Tunnel to neo4j (geht nicht wegen WebSocket. Local sollte das aber gehen):

ssh -i ~/keys/hackathon-temp-key.pem -N -L 7474:ip-<Priv IP>.eu-central-1.compute.internal:7474 ec2-user@<Pup IP

login: neo4j / connect) and run query:

MATCH p=(n)-->() WHERE exists(n.customer_name) RETURN p LIMIT 2

Confluent Cloud and KSQL, REST Proxy, Control Center (Evening)

The creation of the AWS environment will be done by Confluent. We will bring Confluent Platform into AWS and attendees will get their own environment - Code and description Then one task would be to connect the Confluent Cloud Cluster with the local installation (or the AWS setup). This is described here - Configure local Confluent Platform /Apache Kafka components to use Confluent Cloud Cluster Additionally, attendees can execute a couple of recipes

Have fun and all the best

Name		Name	Last commit message	Last commit date
Latest commit History 16 Commits
scripts		scripts
sql		sql
terraform		terraform
README.md		README.md
docker-compose.yml		docker-compose.yml
play_with_compute_instance.sh		play_with_compute_instance.sh

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hackathon-ksql

Agenda afternoon (3 hours):

Pre-reqs:

Agenda Evening

Pre-reqs:

Proceeding and Coding

ATM Fraud detection (afternoon)

Working in the compute instance

Working with Control Center

KSQL Hackathon Playbook

Kibana, Elasticsearch, Neo4j only work on local installations

Confluent Cloud and KSQL, REST Proxy, Control Center (Evening)

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hackathon-ksql

Agenda afternoon (3 hours):

Pre-reqs:

Agenda Evening

Pre-reqs:

Proceeding and Coding

ATM Fraud detection (afternoon)

Working in the compute instance

Working with Control Center

KSQL Hackathon Playbook

Kibana, Elasticsearch, Neo4j only work on local installations

Confluent Cloud and KSQL, REST Proxy, Control Center (Evening)

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