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# DMAAP_DATAROUTER
## OVERVIEW
The Data Routing System project is intended to provide a common framework by which data producers can make data available to data consumers and a way for potential consumers to find feeds with the data they require.
The delivery of data from these kinds of production systems is the domain of the Data Routing System. Its primary goal is to make it easier to move data from existing applications that may not have been designed from the ground up to share data.
The Data Routing System is different from many existing platforms for distributing messages from producers to consumers which focus on real-time delivery of small messages (on the order of a few kilobytes or so) for more
Provisioning is implemented as a Java servlet running under Jetty in one JVM
Provisioning data is stored in a MariaDB database
The backup provisioning server and each node is informed any time provisioning data changes
The backup provisioning server and each node may request the complete set of provisioning data at any time
A Node is implemented as a Java servlet running under Jetty in one JVM
Assumptions
For 95% of all feeds (there will be some exceptions):
Number of Publishing Endpoints per Feed: 1 – 10
Number of Subscribers per Feed: 2 – 10
File Size: 105 – 1010 bytes
with a distribution towards the high end
Frequency of Publishing: 1/day – 10/minute
Lifetime of a Feed: months to years
Lifetime of a Subscription: months to years
Data Router and Sensitive Data Handling
A publisher of a Data Router feed of sensitive (e.g., PCI, SPI, etc.) data needs to encrypt that data prior to delivering it to the Data Router
The Data Router will distribute that data to all of the subscribers of that feed.
Data Router does not examine the Feed content or enforce any restrictions or Validations on the Feed Content in any way
It is the responsibility of the subscribers to work with the publisher to determine how to decrypt that data
What the Data Router is NOT:
Does not support streaming data
Does not tightly couple to any specific publish endpoint or subscriber
Agnostic as to source and sink of data residing in an RDBMS, NoSQL DB, Other DBMS, Flat Files, etc.
Does not transform any published data
Does not “examine” any published data
Does not verify the integrity of a published file
Does not perform any data “cleansing”
Does not store feeds (not a repository or archive)
There is no long-term storage – assumes subscribers are responsive most of the time
Does not encrypt data when queued on a node
Does not provide guaranteed order of delivery
Per-file metadata can be used for ordering
## BUILD
After Datarouter repository is cloned it can be built using Maven
In the repository
Go to datarouter-prov in the root
mvn clean install
Go to datarouter-node in the root
mvn clean install
Project Build will be Successful
## RUN
Datarouter is a Unix based service
Pre-requisites to run the service
MariaDB Version 10.2.14
Java JDK 1.8
Install MariaDB and load needed table into the database
Sample sql_init_01.sql is provided in the datarouter-prov/src/main/resources/misc
Go to datarouter-prov module and run the service using main.java
Go to datarouter-node module and run the service using nodemain.java
Curl Commands to test:
create a feed:
curl -v -X POST -H "Content-Type : application/vnd.att-dr.feed" -H "X-ATT-DR-ON-BEHALF-OF: rs873m" --data-ascii @/opt/app/datartr/addFeed3.txt --post301 --location-trusted -k https://dmaap-dr-prov:8443
Subscribe to feed:
curl -v -X POST -H "Content-Type: application/vnd.att-dr.subscription" -H "X-ATT-DR-ON-BEHALF-OF: rs873m" --data-ascii @/opt/app/datartr/addSubscriber.txt --post301 --location-trusted -k https://dmaap-dr-prov:8443/subscribe/1
Publish to feed:
curl -v -X PUT --user rs873m:rs873m -H "Content-Type: application/octet-stream" --data-binary @/opt/app/datartr/addFeed3.txt --post301 --location-trusted -k https://dmaap-dr-prov:8443/publish/1/test1
## CONFIGURATION
Recommended
Environment - Unix based
Java - 1.8
Maven - 3.2.5
MariaDB - 10.2.14
Self Signed SSL certificates
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